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9 <h1 align="center">The XML C parser and toolkit of Gnome</h1>
11 <h1>Note: this is the flat content of the <a href="index.html">web
14 <h1 style="text-align: center">libxml, a.k.a. gnome-xml</h1>
19 style="text-align: right; font-style: italic; font-size: 10pt">"Programming
20 with libxml2 is like the thrilling embrace of an exotic stranger." <a
21 href="http://diveintomark.org/archives/2004/02/18/libxml2">Mark
24 <p>Libxml2 is the XML C parser and toolkit developed for the Gnome project
25 (but usable outside of the Gnome platform), it is free software available
26 under the <a href="http://www.opensource.org/licenses/mit-license.html">MIT
27 License</a>. XML itself is a metalanguage to design markup languages, i.e.
28 text language where semantic and structure are added to the content using
29 extra "markup" information enclosed between angle brackets. HTML is the most
30 well-known markup language. Though the library is written in C <a
31 href="python.html">a variety of language bindings</a> make it available in
32 other environments.</p>
34 <p>Libxml2 is known to be very portable, the library should build and work
35 without serious troubles on a variety of systems (Linux, Unix, Windows,
36 CygWin, MacOS, MacOS X, RISC Os, OS/2, VMS, QNX, MVS, VxWorks, ...)</p>
38 <p>Libxml2 implements a number of existing standards related to markup
41 <li>the XML standard: <a
42 href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a></li>
43 <li>Namespaces in XML: <a
44 href="http://www.w3.org/TR/REC-xml-names/">http://www.w3.org/TR/REC-xml-names/</a></li>
46 href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a></li>
47 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc2396.txt">RFC 2396</a> :
48 Uniform Resource Identifiers <a
49 href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</a></li>
50 <li>XML Path Language (XPath) 1.0: <a
51 href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a></li>
53 href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a></li>
54 <li>XML Pointer Language (XPointer) Version 1.0: <a
55 href="http://www.w3.org/TR/xptr">http://www.w3.org/TR/xptr</a></li>
56 <li>XML Inclusions (XInclude) Version 1.0: <a
57 href="http://www.w3.org/TR/xinclude/">http://www.w3.org/TR/xinclude/</a></li>
58 <li>ISO-8859-x encodings, as well as <a
59 href="http://www.cis.ohio-state.edu/rfc/rfc2044.txt">rfc2044</a> [UTF-8]
60 and <a href="http://www.cis.ohio-state.edu/rfc/rfc2781.txt">rfc2781</a>
61 [UTF-16] Unicode encodings, and more if using iconv support</li>
62 <li>part of SGML Open Technical Resolution TR9401:1997</li>
63 <li>XML Catalogs Working Draft 06 August 2001: <a
64 href="http://www.oasis-open.org/committees/entity/spec-2001-08-06.html">http://www.oasis-open.org/committees/entity/spec-2001-08-06.html</a></li>
65 <li>Canonical XML Version 1.0: <a
66 href="http://www.w3.org/TR/xml-c14n">http://www.w3.org/TR/xml-c14n</a>
67 and the Exclusive XML Canonicalization CR draft <a
68 href="http://www.w3.org/TR/xml-exc-c14n">http://www.w3.org/TR/xml-exc-c14n</a></li>
69 <li>Relax NG, ISO/IEC 19757-2:2003, <a
70 href="http://www.oasis-open.org/committees/relax-ng/spec-20011203.html">http://www.oasis-open.org/committees/relax-ng/spec-20011203.html</a></li>
71 <li>W3C XML Schemas Part 2: Datatypes <a
72 href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">REC 02 May
74 <li>W3C <a href="http://www.w3.org/TR/xml-id/">xml:id</a> Working Draft 7
78 <p>In most cases libxml2 tries to implement the specifications in a
79 relatively strictly compliant way. As of release 2.4.16, libxml2 passed all
80 1800+ tests from the <a
81 href="http://www.oasis-open.org/committees/xml-conformance/">OASIS XML Tests
84 <p>To some extent libxml2 provides support for the following additional
85 specifications but doesn't claim to implement them completely:</p>
87 <li>Document Object Model (DOM) <a
88 href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a>
89 the document model, but it doesn't implement the API itself, gdome2 does
90 this on top of libxml2</li>
91 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959</a> :
92 libxml2 implements a basic FTP client code</li>
93 <li><a href="http://www.cis.ohio-state.edu/rfc/rfc1945.txt">RFC 1945</a> :
94 HTTP/1.0, again a basic HTTP client code</li>
95 <li>SAX: a SAX2 like interface and a minimal SAX1 implementation compatible
96 with early expat versions</li>
99 <p>A partial implementation of <a
100 href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schemas Part
101 1: Structure</a> is being worked on but it would be far too early to make any
102 conformance statement about it at the moment.</p>
104 <p>Separate documents:</p>
106 <li><a href="http://xmlsoft.org/XSLT/">the libxslt page</a> providing an
107 implementation of XSLT 1.0 and common extensions like EXSLT for
109 <li><a href="http://gdome2.cs.unibo.it/">the gdome2 page</a>
110 : a standard DOM2 implementation for libxml2</li>
111 <li><a href="http://www.aleksey.com/xmlsec/">the XMLSec page</a>: an
112 implementation of <a href="http://www.w3.org/TR/xmldsig-core/">W3C XML
113 Digital Signature</a> for libxml2</li>
114 <li>also check the related links section for more related and active
117 <p> Hosting sponsored by <a href="http://www.aoemedia.de/opensource-cms.html"
118 >Open Source CMS services</a> from AOE media.</p>
120 <p>Logo designed by <a href="mailto:liyanage@access.ch">Marc Liyanage</a>.</p>
122 <h2><a name="Introducti">Introduction</a></h2>
124 <p>This document describes libxml, the <a
125 href="http://www.w3.org/XML/">XML</a> C parser and toolkit developed for the
126 <a href="http://www.gnome.org/">Gnome</a> project. <a
127 href="http://www.w3.org/XML/">XML is a standard</a> for building tag-based
128 structured documents/data.</p>
130 <p>Here are some key points about libxml:</p>
132 <li>Libxml2 exports Push (progressive) and Pull (blocking) type parser
133 interfaces for both XML and HTML.</li>
134 <li>Libxml2 can do DTD validation at parse time, using a parsed document
135 instance, or with an arbitrary DTD.</li>
136 <li>Libxml2 includes complete <a
137 href="http://www.w3.org/TR/xpath">XPath</a>, <a
138 href="http://www.w3.org/TR/xptr">XPointer</a> and <a
139 href="http://www.w3.org/TR/xinclude">XInclude</a> implementations.</li>
140 <li>It is written in plain C, making as few assumptions as possible, and
141 sticking closely to ANSI C/POSIX for easy embedding. Works on
142 Linux/Unix/Windows, ported to a number of other platforms.</li>
143 <li>Basic support for HTTP and FTP client allowing applications to fetch
144 remote resources.</li>
145 <li>The design is modular, most of the extensions can be compiled out.</li>
146 <li>The internal document representation is as close as possible to the <a
147 href="http://www.w3.org/DOM/">DOM</a> interfaces.</li>
148 <li>Libxml2 also has a <a
149 href="http://www.megginson.com/SAX/index.html">SAX like interface</a>;
150 the interface is designed to be compatible with <a
151 href="http://www.jclark.com/xml/expat.html">Expat</a>.</li>
152 <li>This library is released under the <a
153 href="http://www.opensource.org/licenses/mit-license.html">MIT
154 License</a>. See the Copyright file in the distribution for the precise
158 <p>Warning: unless you are forced to because your application links with a
159 Gnome-1.X library requiring it, <strong><span
160 style="background-color: #FF0000">Do Not Use libxml1</span></strong>, use
163 <h2><a name="FAQ">FAQ</a></h2>
165 <p>Table of Contents:</p>
167 <li><a href="FAQ.html#License">License(s)</a></li>
168 <li><a href="FAQ.html#Installati">Installation</a></li>
169 <li><a href="FAQ.html#Compilatio">Compilation</a></li>
170 <li><a href="FAQ.html#Developer">Developer corner</a></li>
173 <h3><a name="License">License</a>(s)</h3>
175 <li><em>Licensing Terms for libxml</em>
176 <p>libxml2 is released under the <a
177 href="http://www.opensource.org/licenses/mit-license.html">MIT
178 License</a>; see the file Copyright in the distribution for the precise
181 <li><em>Can I embed libxml2 in a proprietary application ?</em>
182 <p>Yes. The MIT License allows you to keep proprietary the changes you
183 made to libxml, but it would be graceful to send-back bug fixes and
184 improvements as patches for possible incorporation in the main
185 development tree.</p>
189 <h3><a name="Installati">Installation</a></h3>
191 <li><strong><span style="background-color: #FF0000">Do Not Use
192 libxml1</span></strong>, use libxml2</li>
194 <li><em>Where can I get libxml</em> ?
195 <p>The original distribution comes from <a
196 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> or <a
197 href="ftp://ftp.gnome.org/pub/GNOME/sources/libxml2/2.6/">gnome.org</a></p>
198 <p>Most Linux and BSD distributions include libxml, this is probably the
199 safer way for end-users to use libxml.</p>
200 <p>David Doolin provides precompiled Windows versions at <a
201 href="http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/ ">http://www.ce.berkeley.edu/~doolin/code/libxmlwin32/</a></p>
204 <li><em>I see libxml and libxml2 releases, which one should I install ?</em>
206 <li>If you are not constrained by backward compatibility issues with
207 existing applications, install libxml2 only</li>
208 <li>If you are not doing development, you can safely install both.
209 Usually the packages <a
210 href="http://rpmfind.net/linux/RPM/libxml.html">libxml</a> and <a
211 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml2</a> are
212 compatible (this is not the case for development packages).</li>
213 <li>If you are a developer and your system provides separate packaging
214 for shared libraries and the development components, it is possible
215 to install libxml and libxml2, and also <a
216 href="http://rpmfind.net/linux/RPM/libxml-devel.html">libxml-devel</a>
218 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml2-devel</a>
219 too for libxml2 >= 2.3.0</li>
220 <li>If you are developing a new application, please develop against
224 <li><em>I can't install the libxml package, it conflicts with libxml0</em>
225 <p>You probably have an old libxml0 package used to provide the shared
226 library for libxml.so.0, you can probably safely remove it. The libxml
227 packages provided on <a
228 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> provide
231 <li><em>I can't install the libxml(2) RPM package due to failed
233 <p>The most generic solution is to re-fetch the latest src.rpm , and
234 rebuild it locally with</p>
235 <p><code>rpm --rebuild libxml(2)-xxx.src.rpm</code>.</p>
236 <p>If everything goes well it will generate two binary rpm packages (one
237 providing the shared libs and xmllint, and the other one, the -devel
238 package, providing includes, static libraries and scripts needed to build
239 applications with libxml(2)) that you can install locally.</p>
243 <h3><a name="Compilatio">Compilation</a></h3>
245 <li><em>What is the process to compile libxml2 ?</em>
246 <p>As most UNIX libraries libxml2 follows the "standard":</p>
247 <p><code>gunzip -c xxx.tar.gz | tar xvf -</code></p>
248 <p><code>cd libxml-xxxx</code></p>
249 <p><code>./configure --help</code></p>
250 <p>to see the options, then the compilation/installation proper</p>
251 <p><code>./configure [possible options]</code></p>
252 <p><code>make</code></p>
253 <p><code>make install</code></p>
254 <p>At that point you may have to rerun ldconfig or a similar utility to
255 update your list of installed shared libs.</p>
257 <li><em>What other libraries are needed to compile/install libxml2 ?</em>
258 <p>Libxml2 does not require any other library, the normal C ANSI API
259 should be sufficient (please report any violation to this rule you may
261 <p>However if found at configuration time libxml2 will detect and use the
264 <li><a href="http://www.info-zip.org/pub/infozip/zlib/">libz</a> : a
265 highly portable and available widely compression library.</li>
266 <li>iconv: a powerful character encoding conversion library. It is
267 included by default in recent glibc libraries, so it doesn't need to
268 be installed specifically on Linux. It now seems a <a
269 href="http://www.opennc.org/onlinepubs/7908799/xsh/iconv.html">part
270 of the official UNIX</a> specification. Here is one <a
271 href="http://www.gnu.org/software/libiconv/">implementation of the
272 library</a> which source can be found <a
273 href="ftp://ftp.ilog.fr/pub/Users/haible/gnu/">here</a>.</li>
277 <li><em>Make check fails on some platforms</em>
278 <p>Sometimes the regression tests' results don't completely match the
279 value produced by the parser, and the makefile uses diff to print the
280 delta. On some platforms the diff return breaks the compilation process;
281 if the diff is small this is probably not a serious problem.</p>
282 <p>Sometimes (especially on Solaris) make checks fail due to limitations
283 in make. Try using GNU-make instead.</p>
285 <li><em>I use the SVN version and there is no configure script</em>
286 <p>The configure script (and other Makefiles) are generated. Use the
287 autogen.sh script to regenerate the configure script and Makefiles,
289 <p><code>./autogen.sh --prefix=/usr --disable-shared</code></p>
291 <li><em>I have troubles when running make tests with gcc-3.0</em>
292 <p>It seems the initial release of gcc-3.0 has a problem with the
293 optimizer which miscompiles the URI module. Please use another
298 <h3><a name="Developer">Developer</a> corner</h3>
300 <li><em>Troubles compiling or linking programs using libxml2</em>
301 <p>Usually the problem comes from the fact that the compiler doesn't get
302 the right compilation or linking flags. There is a small shell script
303 <code>xml2-config</code> which is installed as part of libxml2 usual
304 install process which provides those flags. Use</p>
305 <p><code>xml2-config --cflags</code></p>
306 <p>to get the compilation flags and</p>
307 <p><code>xml2-config --libs</code></p>
308 <p>to get the linker flags. Usually this is done directly from the
310 <p><code>CFLAGS=`xml2-config --cflags`</code></p>
311 <p><code>LIBS=`xml2-config --libs`</code></p>
313 <li><em>I want to install my own copy of libxml2 in my home directory and
314 link my programs against it, but it doesn't work</em>
315 <p>There are many different ways to accomplish this. Here is one way to
316 do this under Linux. Suppose your home directory is <code>/home/user.
319 <li>Create a subdirectory, let's call it <code>myxml</code></li>
320 <li>unpack the libxml2 distribution into that subdirectory</li>
321 <li>chdir into the unpacked distribution
322 (<code>/home/user/myxml/libxml2 </code>)</li>
323 <li>configure the library using the "<code>--prefix</code>" switch,
324 specifying an installation subdirectory in
325 <code>/home/user/myxml</code>, e.g.
326 <p><code>./configure --prefix /home/user/myxml/xmlinst</code> {other
327 configuration options}</p>
329 <li>now run <code>make</code> followed by <code>make install</code></li>
330 <li>At this point, the installation subdirectory contains the complete
331 "private" include files, library files and binary program files (e.g.
333 <p><code>/home/user/myxml/xmlinst/lib,
334 /home/user/myxml/xmlinst/include </code> and <code>
335 /home/user/myxml/xmlinst/bin</code></p>
337 <li>In order to use this "private" library, you should first add it to
338 the beginning of your default PATH (so that your own private program
339 files such as xmllint will be used instead of the normal system
340 ones). To do this, the Bash command would be
341 <p><code>export PATH=/home/user/myxml/xmlinst/bin:$PATH</code></p>
343 <li>Now suppose you have a program <code>test1.c</code> that you would
344 like to compile with your "private" library. Simply compile it using
346 <p><code>gcc `xml2-config --cflags --libs` -o test test.c</code></p>
347 Note that, because your PATH has been set with <code>
348 /home/user/myxml/xmlinst/bin</code> at the beginning, the xml2-config
349 program which you just installed will be used instead of the system
350 default one, and this will <em>automatically</em> get the correct
351 libraries linked with your program.</li>
356 <li><em>xmlDocDump() generates output on one line.</em>
357 <p>Libxml2 will not <strong>invent</strong> spaces in the content of a
358 document since <strong>all spaces in the content of a document are
359 significant</strong>. If you build a tree from the API and want
362 <li>the correct way is to generate those yourself too.</li>
363 <li>the dangerous way is to ask libxml2 to add those blanks to your
364 content <strong>modifying the content of your document in the
365 process</strong>. The result may not be what you expect. There is
366 <strong>NO</strong> way to guarantee that such a modification won't
367 affect other parts of the content of your document. See <a
368 href="http://xmlsoft.org/html/libxml-parser.html#xmlKeepBlanksDefault">xmlKeepBlanksDefault
370 href="http://xmlsoft.org/html/libxml-tree.html#xmlSaveFormatFile">xmlSaveFormatFile
375 <li><em>Extra nodes in the document:</em>
376 <p><em>For an XML file as below:</em></p>
377 <pre><?xml version="1.0"?>
378 <PLAN xmlns="http://www.argus.ca/autotest/1.0/">
379 <NODE CommFlag="0"/>
380 <NODE CommFlag="1"/>
382 <p><em>after parsing it with the function
383 pxmlDoc=xmlParseFile(...);</em></p>
384 <p><em>I want to the get the content of the first node (node with the
385 CommFlag="0")</em></p>
386 <p><em>so I did it as following;</em></p>
387 <pre>xmlNodePtr pnode;
388 pnode=pxmlDoc->children->children;</pre>
389 <p><em>but it does not work. If I change it to</em></p>
390 <pre>pnode=pxmlDoc->children->children->next;</pre>
391 <p><em>then it works. Can someone explain it to me.</em></p>
393 <p>In XML all characters in the content of the document are significant
394 <strong>including blanks and formatting line breaks</strong>.</p>
395 <p>The extra nodes you are wondering about are just that, text nodes with
396 the formatting spaces which are part of the document but that people tend
397 to forget. There is a function <a
398 href="http://xmlsoft.org/html/libxml-parser.html">xmlKeepBlanksDefault
399 ()</a> to remove those at parse time, but that's an heuristic, and its
400 use should be limited to cases where you are certain there is no
401 mixed-content in the document.</p>
403 <li><em>I get compilation errors of existing code like when accessing
404 <strong>root</strong> or <strong>child fields</strong> of nodes.</em>
405 <p>You are compiling code developed for libxml version 1 and using a
406 libxml2 development environment. Either switch back to libxml v1 devel or
407 even better fix the code to compile with libxml2 (or both) by <a
408 href="upgrade.html">following the instructions</a>.</p>
410 <li><em>I get compilation errors about non existing
411 <strong>xmlRootNode</strong> or <strong>xmlChildrenNode</strong>
413 <p>The source code you are using has been <a
414 href="upgrade.html">upgraded</a> to be able to compile with both libxml
415 and libxml2, but you need to install a more recent version:
416 libxml(-devel) >= 1.8.8 or libxml2(-devel) >= 2.1.0</p>
418 <li><em>Random crashes in threaded applications</em>
419 <p>Read and follow all advices on the <a href="threads.html">thread
420 safety</a> page, and make 100% sure you never call xmlCleanupParser()
421 while the library or an XML document might still be in use by another
424 <li><em>The example provided in the web page does not compile.</em>
425 <p>It's hard to maintain the documentation in sync with the code
426 <grin/> ...</p>
427 <p>Check the previous points 1/ and 2/ raised before, and please send
430 <li><em>Where can I get more examples and information than provided on the
432 <p>Ideally a libxml2 book would be nice. I have no such plan ... But you
435 <li>check more deeply the <a href="html/libxml-lib.html">existing
436 generated doc</a></li>
437 <li>have a look at <a href="examples/index.html">the set of
439 <li>look for examples of use for libxml2 function using the Gnome code
440 or by asking on Google.</li>
442 href="http://svn.gnome.org/viewvc/libxml2/trunk/">Browse
443 the libxml2 source</a> , I try to write code as clean and documented
444 as possible, so looking at it may be helpful. In particular the code
445 of <a href="http://svn.gnome.org/viewvc/libxml2/trunk/xmllint.c?view=markup">xmllint.c</a> and of the various testXXX.c test programs should
446 provide good examples of how to do things with the library.</li>
450 <li><em>What about C++ ?</em>
451 <p>libxml2 is written in pure C in order to allow easy reuse on a number
452 of platforms, including embedded systems. I don't intend to convert to
454 <p>There is however a C++ wrapper which may fulfill your needs:</p>
456 <li>by Ari Johnson <ari@btigate.com>:
458 href="http://libxmlplusplus.sourceforge.net/">http://libxmlplusplus.sourceforge.net/</a></p>
460 href="http://sourceforge.net/project/showfiles.php?group_id=12999">http://sourceforge.net/project/showfiles.php?group_id=12999</a></p>
464 <li><em>How to validate a document a posteriori ?</em>
465 <p>It is possible to validate documents which had not been validated at
466 initial parsing time or documents which have been built from scratch
467 using the API. Use the <a
468 href="http://xmlsoft.org/html/libxml-valid.html#xmlValidateDtd">xmlValidateDtd()</a>
469 function. It is also possible to simply add a DTD to an existing
471 <pre>xmlDocPtr doc; /* your existing document */
472 xmlDtdPtr dtd = xmlParseDTD(NULL, filename_of_dtd); /* parse the DTD */
474 dtd->name = xmlStrDup((xmlChar*)"root_name"); /* use the given root */
476 doc->intSubset = dtd;
477 if (doc->children == NULL) xmlAddChild((xmlNodePtr)doc, (xmlNodePtr)dtd);
478 else xmlAddPrevSibling(doc->children, (xmlNodePtr)dtd);
481 <li><em>So what is this funky "xmlChar" used all the time?</em>
482 <p>It is a null terminated sequence of utf-8 characters. And only utf-8!
483 You need to convert strings encoded in different ways to utf-8 before
484 passing them to the API. This can be accomplished with the iconv library
492 <h2><a name="Documentat">Developer Menu</a></h2>
494 <p>There are several on-line resources related to using libxml:</p>
496 <li>Use the <a href="search.php">search engine</a> to look up
498 <li>Check the <a href="FAQ.html">FAQ.</a></li>
499 <li>Check the <a href="http://xmlsoft.org/html/libxml-lib.html">extensive
500 documentation</a> automatically extracted from code comments.</li>
501 <li>Look at the documentation about <a href="encoding.html">libxml
502 internationalization support</a>.</li>
503 <li>This page provides a global overview and <a href="example.html">some
504 examples</a> on how to use libxml.</li>
505 <li><a href="examples/index.html">Code examples</a></li>
506 <li>John Fleck's libxml2 tutorial: <a href="tutorial/index.html">html</a>
507 or <a href="tutorial/xmltutorial.pdf">pdf</a>.</li>
508 <li>If you need to parse large files, check the <a
509 href="xmlreader.html">xmlReader</a> API tutorial</li>
510 <li><a href="mailto:james@daa.com.au">James Henstridge</a> wrote <a
511 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">some nice
512 documentation</a> explaining how to use the libxml SAX interface.</li>
513 <li>George Lebl wrote <a
514 href="http://www-106.ibm.com/developerworks/library/l-gnome3/">an article
515 for IBM developerWorks</a> about using libxml.</li>
516 <li>Check <a href="http://svn.gnome.org/viewvc/libxml2/trunk/TODO?view=markup">the TODO
518 <li>Read the <a href="upgrade.html">1.x to 2.x upgrade path</a>
519 description. If you are starting a new project using libxml you should
520 really use the 2.x version.</li>
521 <li>And don't forget to look at the <a
522 href="http://mail.gnome.org/archives/xml/">mailing-list archive</a>.</li>
525 <h2><a name="Reporting">Reporting bugs and getting help</a></h2>
527 <p>Well, bugs or missing features are always possible, and I will make a
528 point of fixing them in a timely fashion. The best way to report a bug is to
529 use the <a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome
530 bug tracking database</a> (make sure to use the "libxml2" module name). I
531 look at reports there regularly and it's good to have a reminder when a bug
532 is still open. Be sure to specify that the bug is for the package libxml2.</p>
534 <p>For small problems you can try to get help on IRC, the #xml channel on
535 irc.gnome.org (port 6667) usually has a few people subscribed which may help
536 (but there is no guarantee and if a real issue is raised it should go on the
537 mailing-list for archival).</p>
539 <p>There is also a mailing-list <a
540 href="mailto:xml@gnome.org">xml@gnome.org</a> for libxml, with an <a
541 href="http://mail.gnome.org/archives/xml/">on-line archive</a> (<a
542 href="http://xmlsoft.org/messages">old</a>). To subscribe to this list,
544 href="http://mail.gnome.org/mailman/listinfo/xml">associated Web</a> page and
545 follow the instructions. <strong>Do not send code, I won't debug it</strong>
546 (but patches are really appreciated!).</p>
548 <p>Please note that with the current amount of virus and SPAM, sending mail
549 to the list without being subscribed won't work. There is *far too many
550 bounces* (in the order of a thousand a day !) I cannot approve them manually
551 anymore. If your mail to the list bounced waiting for administrator approval,
552 it is LOST ! Repost it and fix the problem triggering the error. Also please
553 note that <span style="color: #FF0000; background-color: #FFFFFF">emails with
554 a legal warning asking to not copy or redistribute freely the information
555 they contain</span> are <strong>NOT</strong> acceptable for the mailing-list,
556 such mail will as much as possible be discarded automatically, and are less
557 likely to be answered if they made it to the list, <strong>DO NOT</strong>
558 post to the list from an email address where such legal requirements are
559 automatically added, get private paying support if you can't share
562 <p>Check the following <strong><span style="color: #FF0000">before
563 posting</span></strong>:</p>
565 <li>Read the <a href="FAQ.html">FAQ</a> and <a href="search.php">use the
566 search engine</a> to get information related to your problem.</li>
567 <li>Make sure you are <a href="ftp://xmlsoft.org/libxml2/">using a recent
568 version</a>, and that the problem still shows up in a recent version.</li>
569 <li>Check the <a href="http://mail.gnome.org/archives/xml/">list
570 archives</a> to see if the problem was reported already. In this case
571 there is probably a fix available, similarly check the <a
572 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">registered
574 <li>Make sure you can reproduce the bug with xmllint or one of the test
575 programs found in source in the distribution.</li>
576 <li>Please send the command showing the error as well as the input (as an
580 <p>Then send the bug with associated information to reproduce it to the <a
581 href="mailto:xml@gnome.org">xml@gnome.org</a> list; if it's really libxml
582 related I will approve it. Please do not send mail to me directly, it makes
583 things really hard to track and in some cases I am not the best person to
584 answer a given question, ask on the list.</p>
586 <p>To <span style="color: #E50000">be really clear about support</span>:</p>
588 <li>Support or help <span style="color: #E50000">requests MUST be sent to
589 the list or on bugzilla</span> in case of problems, so that the Question
590 and Answers can be shared publicly. Failing to do so carries the implicit
591 message "I want free support but I don't want to share the benefits with
592 others" and is not welcome. I will automatically Carbon-Copy the
593 xml@gnome.org mailing list for any technical reply made about libxml2 or
595 <li>There is <span style="color: #E50000">no guarantee of support</span>. If
596 your question remains unanswered after a week, repost it, making sure you
597 gave all the detail needed and the information requested.</li>
598 <li>Failing to provide information as requested or double checking first
599 for prior feedback also carries the implicit message "the time of the
600 library maintainers is less valuable than my time" and might not be
604 <p>Of course, bugs reported with a suggested patch for fixing them will
605 probably be processed faster than those without.</p>
607 <p>If you're looking for help, a quick look at <a
608 href="http://mail.gnome.org/archives/xml/">the list archive</a> may actually
609 provide the answer. I usually send source samples when answering libxml2
610 usage questions. The <a
611 href="http://xmlsoft.org/html/book1.html">auto-generated documentation</a> is
612 not as polished as I would like (i need to learn more about DocBook), but
613 it's a good starting point.</p>
615 <h2><a name="help">How to help</a></h2>
617 <p>You can help the project in various ways, the best thing to do first is to
618 subscribe to the mailing-list as explained before, check the <a
619 href="http://mail.gnome.org/archives/xml/">archives </a>and the <a
620 href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Gnome bug
623 <li>Provide patches when you find problems.</li>
624 <li>Provide the diffs when you port libxml2 to a new platform. They may not
625 be integrated in all cases but help pinpointing portability problems
627 <li>Provide documentation fixes (either as patches to the code comments or
629 <li>Provide new documentations pieces (translations, examples, etc
631 <li>Check the TODO file and try to close one of the items.</li>
632 <li>Take one of the points raised in the archive or the bug database and
633 provide a fix. <a href="mailto:daniel@veillard.com">Get in touch with me
634 </a>before to avoid synchronization problems and check that the suggested
635 fix will fit in nicely :-)</li>
638 <h2><a name="Downloads">Downloads</a></h2>
640 <p>The latest versions of libxml2 can be found on the <a
641 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a> server ( <a
642 href="ftp://xmlsoft.org/libxml2/">FTP</a> and rsync are available), there are also
643 mirrors (<a href="ftp://fr.rpmfind.net/pub/libxml/">France</a> and
644 Antonin Sprinzl also provide <a href="ftp://gd.tuwien.ac.at/pub/libxml/">a
645 mirror in Austria</a>). (NOTE that you need both the <a
646 href="http://rpmfind.net/linux/RPM/libxml2.html">libxml(2)</a> and <a
647 href="http://rpmfind.net/linux/RPM/libxml2-devel.html">libxml(2)-devel</a>
648 packages installed to compile applications using libxml if using RPMs.)</p>
650 <p>You can find all the history of libxml(2) and libxslt releases in the <a
651 href="http://xmlsoft.org/sources/old/">old</a> directory. The precompiled
652 Windows binaries made by Igor Zlatovic are available in the <a
653 href="http://xmlsoft.org/sources/win32/">win32</a> directory.</p>
657 <li>RPMs for x86_64 are available directly on <a
658 href="ftp://xmlsoft.org/libxml2/">xmlsoft.org</a>, the source RPM will compile on
659 any architecture supported.</li>
660 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the
661 maintainer of the Windows port, <a
662 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides
664 <li>OpenCSW provides <a
665 href="http://opencsw.org/packages/libxml2">Solaris
667 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> provides <a
668 href="http://www.explain.com.au/oss/libxml2xslt.html">Mac Os X
670 <li>The HP-UX porting center provides <a
671 href="http://hpux.connect.org.uk/hppd/hpux/Gnome/">HP-UX binaries</a></li>
672 <li>Bull provides precompiled <a
673 href="http://gnome.bullfreeware.com/new_index.html">RPMs for AIX</a> as
674 patr of their GNOME packages</li>
677 <p>If you know other supported binary ports, please <a
678 href="http://veillard.com/">contact me</a>.</p>
680 <p><a name="Snapshot">Snapshot:</a></p>
682 <li>Code from the GNOME GIT base libxml2 module, updated hourly <a
683 href="ftp://xmlsoft.org/libxml2/libxml2-git-snapshot.tar.gz">libxml2-git-snapshot.tar.gz</a>.</li>
684 <li>Docs, content of the web site, the list archive included <a
685 href="ftp://xmlsoft.org/libxml2/libxml-docs.tar.gz">libxml-docs.tar.gz</a>.</li>
688 <p><a name="Contribs">Contributions:</a></p>
690 <p>I do accept external contributions, especially if compiling on another
691 platform, get in touch with the list to upload the package, wrappers for
692 various languages have been provided, and can be found in the <a
693 href="python.html">bindings section</a></p>
695 <p>Libxml2 is also available from GIT:</p>
697 <li><p>See <a href="http://git.gnome.org/browse/libxml2/">libxml2 Git web</a>.
698 To checkout a local tree use:</p>
699 <pre>git clone git://git.gnome.org/libxml2</pre>
701 <li>The <strong>libxslt</strong> module is also present
702 <a href="http://git.gnome.org/browse/libxslt/">there</a>.</li>
705 <h2><a name="News">Releases</a></h2>
707 <p>The <a href="ChangeLog.html">change log</a> describes the recents commits
708 to the <a href="http://git.gnome.org/browse/libxml2/">GIT</a> code base.</p>
710 <p>Here is the list of public releases:</p>
712 <h3>2.9.7: Nov 02 2017</h3>
714 <li>Documentation:<br/>
715 xmlcatalog: refresh man page wrt. quering system catalog easily (Jan Pokorný)<br/>
718 <li>Portability:<br/>
719 Fix deprecated Travis compiler flag (Nick Wellnhofer),<br/>
720 Add declaration for DllMain (J. Peter Mugaas),<br/>
721 Fix preprocessor conditional in threads.h (J. Peter Mugaas),<br/>
722 Fix pointer comparison warnings on 64-bit Windows (J. Peter Mugaas),<br/>
723 Fix macro redefinition warning (J. Peter Mugaas),<br/>
724 Default to native threads on MinGW-w64 (Nick Wellnhofer),<br/>
725 Simplify Windows IO functions (Nick Wellnhofer),<br/>
726 Fix runtest on Windows (Nick Wellnhofer),<br/>
727 socklen_t is always int on Windows (Nick Wellnhofer),<br/>
728 Don't redefine socket error codes on Windows (Nick Wellnhofer),<br/>
729 Fix pointer/int cast warnings on 64-bit Windows (Nick Wellnhofer),<br/>
730 Fix Windows compiler warnings in xmlCanonicPath (Nick Wellnhofer)<br/>
734 xmlcatalog: restore ability to query system catalog easily (Jan Pokorný),<br/>
735 Fix comparison of nodesets to strings (Nick Wellnhofer)<br/>
738 <li>Improvements:<br/>
739 Add Makefile rules to rebuild HTML man pages (Nick Wellnhofer),<br/>
740 Fix mixed decls and code in timsort.h (Nick Wellnhofer),<br/>
741 Rework handling of return values in thread tests (Nick Wellnhofer),<br/>
742 Fix unused variable warnings in testrecurse (Nick Wellnhofer),<br/>
743 Fix -Wimplicit-fallthrough warnings (J. Peter Mugaas),<br/>
744 Upgrade timsort.h to latest revision (Nick Wellnhofer),<br/>
745 Increase warning level to /W3 under MSVC (Nick Wellnhofer),<br/>
746 Fix a couple of warnings in dict.c and threads.c (Nick Wellnhofer),<br/>
747 Update .gitignore for Windows (Nick Wellnhofer),<br/>
748 Fix unused variable warnings in nanohttp.c (Nick Wellnhofer),<br/>
749 Fix the Windows header mess (Nick Wellnhofer),<br/>
750 Don't include winsock2.h in xmllint.c (Nick Wellnhofer),<br/>
751 Remove generated file python/setup.py from version control (Nick Wellnhofer),<br/>
752 Use __linux__ macro in generated code (Nick Wellnhofer)<br/>
756 <h3>v2.9.6: Oct 06 2017</h3>
758 <li>Portability:<br/>
759 Change preprocessor OS tests to __linux__ (Nick Wellnhofer)<br/>
763 Fix XPath stack frame logic (Nick Wellnhofer),<br/>
764 Report undefined XPath variable error message (Nick Wellnhofer),<br/>
765 Fix regression with librsvg (Nick Wellnhofer),<br/>
766 Handle more invalid entity values in recovery mode (Nick Wellnhofer),<br/>
767 Fix structured validation errors (Nick Wellnhofer),<br/>
768 Fix memory leak in LZMA decompressor (Nick Wellnhofer),<br/>
769 Set memory limit for LZMA decompression (Nick Wellnhofer),<br/>
770 Handle illegal entity values in recovery mode (Nick Wellnhofer),<br/>
771 Fix debug dump of streaming XPath expressions (Nick Wellnhofer),<br/>
772 Fix memory leak in nanoftp (Nick Wellnhofer),<br/>
773 Fix memory leaks in SAX1 parser (Nick Wellnhofer)<br/>
776 <h3>v2.9.5: Sep 04 2017</h3>
780 Detect infinite recursion in parameter entities (Nick Wellnhofer),<br/>
781 Fix handling of parameter-entity references (Nick Wellnhofer),<br/>
782 Disallow namespace nodes in XPointer ranges (Nick Wellnhofer),<br/>
783 Fix XPointer paths beginning with range-to (Nick Wellnhofer)<br/>
786 <li>Documentation:<br/>
787 Documentation fixes (Nick Wellnhofer),<br/>
788 Spelling and grammar fixes (Nick Wellnhofer)<br/>
791 <li>Portability:<br/>
792 Adding README.zOS to list of extra files for the release (Daniel Veillard),<br/>
793 Description of work needed to compile on zOS (Stéphane Michaut),<br/>
794 Porting libxml2 on zOS encoding of code (Stéphane Michaut),<br/>
795 small changes for OS/400 (Patrick Monnerat),<br/>
796 relaxng.c, xmlschemas.c: Fix build on pre-C99 compilers (Chun-wei Fan)<br/>
800 Problem resolving relative URIs (Daniel Veillard),<br/>
801 Fix unwanted warnings when switching encodings (Nick Wellnhofer),<br/>
802 Fix signature of xmlSchemaAugmentImportedIDC (Daniel Veillard),<br/>
803 Heap-buffer-overflow read of size 1 in xmlFAParsePosCharGroup (David Kilzer),<br/>
804 Fix NULL pointer deref in xmlFAParseCharClassEsc (Nick Wellnhofer),<br/>
805 Fix infinite loops with push parser in recovery mode (Nick Wellnhofer),<br/>
806 Send xmllint usage error to stderr (Nick Wellnhofer),<br/>
807 Fix NULL deref in xmlParseExternalEntityPrivate (Nick Wellnhofer),<br/>
808 Make sure not to call IS_BLANK_CH when parsing the DTD (Nick Wellnhofer),<br/>
809 Fix xmlHaltParser (Nick Wellnhofer),<br/>
810 Fix pathological performance when outputting charrefs (Nick Wellnhofer),<br/>
811 Fix invalid-source-encoding warnings in testWriter.c (Nick Wellnhofer),<br/>
812 Fix duplicate SAX callbacks for entity content (David Kilzer),<br/>
813 Treat URIs with scheme as absolute in C14N (Nick Wellnhofer),<br/>
814 Fix copy-paste errors in error messages (Nick Wellnhofer),<br/>
815 Fix sanity check in htmlParseNameComplex (Nick Wellnhofer),<br/>
816 Fix potential infinite loop in xmlStringLenDecodeEntities (Nick Wellnhofer),<br/>
817 Reset parser input pointers on encoding failure (Nick Wellnhofer),<br/>
818 Fix memory leak in xmlParseEntityDecl error path (Nick Wellnhofer),<br/>
819 Fix xmlBuildRelativeURI for URIs starting with './' (Nick Wellnhofer),<br/>
820 Fix type confusion in xmlValidateOneNamespace (Nick Wellnhofer),<br/>
821 Fix memory leak in xmlStringLenGetNodeList (Nick Wellnhofer),<br/>
822 Fix NULL pointer deref in xmlDumpElementContent (Daniel Veillard),<br/>
823 Fix memory leak in xmlBufAttrSerializeTxtContent (Nick Wellnhofer),<br/>
824 Stop parser on unsupported encodings (Nick Wellnhofer),<br/>
825 Check for integer overflow in memory debug code (Nick Wellnhofer),<br/>
826 Fix buffer size checks in xmlSnprintfElementContent (Nick Wellnhofer),<br/>
827 Avoid reparsing in xmlParseStartTag2 (Nick Wellnhofer),<br/>
828 Fix undefined behavior in xmlRegExecPushStringInternal (Nick Wellnhofer),<br/>
829 Check XPath exponents for overflow (Nick Wellnhofer),<br/>
830 Check for overflow in xmlXPathIsPositionalPredicate (Nick Wellnhofer),<br/>
831 Fix spurious error message (Nick Wellnhofer),<br/>
832 Fix memory leak in xmlCanonicPath (Nick Wellnhofer),<br/>
833 Fix memory leak in xmlXPathCompareNodeSetValue (Nick Wellnhofer),<br/>
834 Fix memory leak in pattern error path (Nick Wellnhofer),<br/>
835 Fix memory leak in parser error path (Nick Wellnhofer),<br/>
836 Fix memory leaks in XPointer error paths (Nick Wellnhofer),<br/>
837 Fix memory leak in xmlXPathNodeSetMergeAndClear (Nick Wellnhofer),<br/>
838 Fix memory leak in XPath filter optimizations (Nick Wellnhofer),<br/>
839 Fix memory leaks in XPath error paths (Nick Wellnhofer),<br/>
840 Do not leak the new CData node if adding fails (David Tardon),<br/>
841 Prevent unwanted external entity reference (Neel Mehta),<br/>
842 Increase buffer space for port in HTTP redirect support (Daniel Veillard),<br/>
843 Fix more NULL pointer derefs in xpointer.c (Nick Wellnhofer),<br/>
844 Avoid function/data pointer conversion in xpath.c (Nick Wellnhofer),<br/>
845 Fix format string warnings (Nick Wellnhofer),<br/>
846 Disallow namespace nodes in XPointer points (Nick Wellnhofer),<br/>
847 Fix comparison with root node in xmlXPathCmpNodes (Nick Wellnhofer),<br/>
848 Fix attribute decoding during XML schema validation (Alex Henrie),<br/>
849 Fix NULL pointer deref in XPointer range-to (Nick Wellnhofer)<br/>
852 <li>Improvements:<br/>
853 Updating the spec file to reflect Fedora 24 (Daniel Veillard),<br/>
854 Add const in five places to move 1 KiB to .rdata (Bruce Dawson),<br/>
855 Fix missing part of comment for function xmlXPathEvalExpression() (Daniel Veillard),<br/>
856 Get rid of "blanks wrapper" for parameter entities (Nick Wellnhofer),<br/>
857 Simplify handling of parameter entity references (Nick Wellnhofer),<br/>
858 Deduplicate code in encoding.c (Nick Wellnhofer),<br/>
859 Make HTML parser functions take const pointers (Nick Wellnhofer),<br/>
860 Build test programs only when needed (Nick Wellnhofer),<br/>
861 Fix doc/examples/index.py (Nick Wellnhofer),<br/>
862 Fix compiler warnings in threads.c (Nick Wellnhofer),<br/>
863 Fix empty-body warning in nanohttp.c (Nick Wellnhofer),<br/>
864 Fix cast-align warnings (Nick Wellnhofer),<br/>
865 Fix unused-parameter warnings (Nick Wellnhofer),<br/>
866 Rework entity boundary checks (Nick Wellnhofer),<br/>
867 Don't switch encoding for internal parameter entities (Nick Wellnhofer),<br/>
868 Merge duplicate code paths handling PE references (Nick Wellnhofer),<br/>
869 Test SAX2 callbacks with entity substitution (Nick Wellnhofer),<br/>
870 Support catalog and threads tests under --without-sax1 (Nick Wellnhofer),<br/>
871 Misc fixes for 'make tests' (Nick Wellnhofer),<br/>
872 Initialize keepBlanks in HTML parser (Nick Wellnhofer),<br/>
873 Add test cases for bug 758518 (David Kilzer),<br/>
874 Fix compiler warning in htmlParseElementInternal (Nick Wellnhofer),<br/>
875 Remove useless check in xmlParseAttributeListDecl (Nick Wellnhofer),<br/>
876 Allow zero sized memory input buffers (Nick Wellnhofer),<br/>
877 Add TODO comment in xmlSwitchEncoding (Nick Wellnhofer),<br/>
878 Check for integer overflow in xmlXPathFormatNumber (Nick Wellnhofer),<br/>
879 Make Travis print UBSan stacktraces (Nick Wellnhofer),<br/>
880 Add .travis.yml (Nick Wellnhofer),<br/>
881 Fix expected error output in Python tests (Nick Wellnhofer),<br/>
882 Simplify control flow in xmlParseStartTag2 (Nick Wellnhofer),<br/>
883 Disable LeakSanitizer when running API tests (Nick Wellnhofer),<br/>
884 Avoid out-of-bound array access in API tests (Nick Wellnhofer),<br/>
885 Avoid spurious UBSan errors in parser.c (Nick Wellnhofer),<br/>
886 Parse small XPath numbers more accurately (Nick Wellnhofer),<br/>
887 Rework XPath rounding functions (Nick Wellnhofer),<br/>
888 Fix white space in test output (Nick Wellnhofer),<br/>
889 Fix axis traversal from attribute and namespace nodes (Nick Wellnhofer),<br/>
890 Check for trailing characters in XPath expressions earlier (Nick Wellnhofer),<br/>
891 Rework final handling of XPath results (Nick Wellnhofer),<br/>
892 Make xmlXPathEvalExpression call xmlXPathEval (Nick Wellnhofer),<br/>
893 Remove unused variables (Nick Wellnhofer),<br/>
894 Don't print generic error messages in XPath tests (Nick Wellnhofer)<br/>
898 Fix a couple of misleading indentation errors (Daniel Veillard),<br/>
899 Remove unnecessary calls to xmlPopInput (Nick Wellnhofer)<br/>
902 <h3>2.9.4: May 23 2016</h3>
905 More format string warnings with possible format string vulnerability (David Kilzer),<br/>
906 Avoid building recursive entities (Daniel Veillard),<br/>
907 Heap-based buffer overread in htmlCurrentChar (Pranjal Jumde),<br/>
908 Heap-based buffer-underreads due to xmlParseName (David Kilzer),<br/>
909 Heap use-after-free in xmlSAX2AttributeNs (Pranjal Jumde),<br/>
910 Heap use-after-free in htmlParsePubidLiteral and htmlParseSystemiteral (Pranjal Jumde),<br/>
911 Fix some format string warnings with possible format string vulnerability (David Kilzer),<br/>
912 Detect change of encoding when parsing HTML names (Hugh Davenport),<br/>
913 Fix inappropriate fetch of entities content (Daniel Veillard),<br/>
914 Bug 759398: Heap use-after-free in xmlDictComputeFastKey <https://bugzilla.gnome.org/show_bug.cgi?id=759398> (Pranjal Jumde),<br/>
915 Bug 758605: Heap-based buffer overread in xmlDictAddString <https://bugzilla.gnome.org/show_bug.cgi?id=758605> (Pranjal Jumde),<br/>
916 Bug 758588: Heap-based buffer overread in xmlParserPrintFileContextInternal <https://bugzilla.gnome.org/show_bug.cgi?id=758588> (David Kilzer),<br/>
917 Bug 757711: heap-buffer-overflow in xmlFAParsePosCharGroup <https://bugzilla.gnome.org/show_bug.cgi?id=757711> (Pranjal Jumde),<br/>
918 Add missing increments of recursion depth counter to XML parser. (Peter Simons)<br/>
921 <li>Documentation:<br/>
922 Fix typo: s{ ec -> cr }cipt (Jan Pokorný),<br/>
923 Fix typos: dictio{ nn -> n }ar{y,ies} (Jan Pokorný),<br/>
924 Fix typos: PATH_{ SEAPARATOR -> SEPARATOR } (Jan Pokorný),<br/>
925 Correct a typo. (Shlomi Fish)<br/>
928 <li>Portability:<br/>
929 Correct the usage of LDFLAGS (Mattias Hansson),<br/>
930 Revert the use of SAVE_LDFLAGS in configure.ac (Mattias Hansson),<br/>
931 libxml2 hardcodes -L/lib in zlib/lzma tests which breaks cross-compiles (Mike Frysinger),<br/>
932 Fix apibuild for a recently added construct (Daniel Veillard),<br/>
933 Use pkg-config to locate zlib when possible (Stewart Brodie),<br/>
934 Use pkg-config to locate ICU when possible (Stewart Brodie),<br/>
935 Portability to non C99 compliant compilers (Patrick Monnerat),<br/>
936 dict.h: Move xmlDictPtr definition before includes to allow direct inclusion. (Patrick Monnerat),<br/>
937 os400: tell about xmllint and xmlcatalog in README400. (Patrick Monnerat),<br/>
938 os400: properly process SGML add in XMLCATALOG command. (Patrick Monnerat),<br/>
939 os400: implement CL command XMLCATALOG. (Patrick Monnerat),<br/>
940 os400: compile and install program xmlcatalog (qshell-only). (Patrick Monnerat),<br/>
941 os400: expand tabs in sources, strip trailing blanks. (Patrick Monnerat),<br/>
942 os400: implement CL command XMLLINT. (Patrick Monnerat),<br/>
943 os400: compile and install program xmllint (qshell-only). (Patrick Monnerat),<br/>
944 os400: initscript make_module(): Use options instead of positional parameters. (Patrick Monnerat),<br/>
945 os400: c14n.rpgle: allow *omit for nullable reference parameters. (Patrick Monnerat),<br/>
946 os400: use like() for double type. (Patrick Monnerat),<br/>
947 os400: use like() for int type. (Patrick Monnerat),<br/>
948 os400: use like() for unsigned int type. (Patrick Monnerat),<br/>
949 os400: use like() for enum types. (Patrick Monnerat),<br/>
950 Add xz to xml2-config --libs output (Baruch Siach),<br/>
951 Bug 760190: configure.ac should be able to build --with-icu without icu-config tool <https://bugzilla.gnome.org/show_bug.cgi?id=760190> (David Kilzer),<br/>
952 win32\VC10\config.h and VS 2015 (Bruce Dawson),<br/>
953 Add configure maintainer mode (orzen)<br/>
957 Avoid an out of bound access when serializing malformed strings (Daniel Veillard),<br/>
958 Unsigned addition may overflow in xmlMallocAtomicLoc() (David Kilzer),<br/>
959 Integer signed/unsigned type mismatch in xmlParserInputGrow() (David Kilzer),<br/>
960 Bug 763071: heap-buffer-overflow in xmlStrncat <https://bugzilla.gnome.org/show_bug.cgi?id=763071> (Pranjal Jumde),<br/>
961 Integer overflow parsing port number in URI (Michael Paddon),<br/>
962 Fix an error with regexp on nullable counted char transition (Daniel Veillard),<br/>
963 Fix memory leak with XPath namespace nodes (Nick Wellnhofer),<br/>
964 Fix namespace axis traversal (Nick Wellnhofer),<br/>
965 Fix null pointer deref in docs with no root element (Hugh Davenport),<br/>
966 Fix XSD validation of URIs with ampersands (Alex Henrie),<br/>
967 xmlschemastypes.c: accept endOfDayFrag Times set to "24:00:00" mean "end of day" and should not cause an error. (Patrick Monnerat),<br/>
968 xmlcatalog: flush stdout before interactive shell input. (Patrick Monnerat),<br/>
969 xmllint: flush stdout before interactive shell input. (Patrick Monnerat),<br/>
970 Don't recurse into OP_VALUEs in xmlXPathOptimizeExpression (Nick Wellnhofer),<br/>
971 Fix namespace::node() XPath expression (Nick Wellnhofer),<br/>
972 Fix OOB write in xmlXPathEmptyNodeSet (Nick Wellnhofer),<br/>
973 Fix parsing of NCNames in XPath (Nick Wellnhofer),<br/>
974 Fix OOB read with invalid UTF-8 in xmlUTF8Strsize (Nick Wellnhofer),<br/>
975 Do normalize string-based datatype value in RelaxNG facet checking (Audric Schiltknecht),<br/>
976 Bug 760921: REGRESSION (8eb55d78): doc/examples/io1 test fails after fix for "xmlSaveUri() incorrectly recomposes URIs with rootless paths" <https://bugzilla.gnome.org/show_bug.cgi?id=760921> (David Kilzer),<br/>
977 Bug 760861: REGRESSION (bf9c1dad): Missing results for test/schemas/regexp-char-ref_[01].xsd <https://bugzilla.gnome.org/show_bug.cgi?id=760861> (David Kilzer),<br/>
978 error.c: *input->cur == 0 does not mean no error (Pavel Raiskup),<br/>
979 Add missing RNG test files (David Kilzer),<br/>
980 Bug 760183: REGRESSION (v2.9.3): XML push parser fails with bogus UTF-8 encoding error when multi-byte character in large CDATA section is split across buffer <https://bugzilla.gnome.org/show_bug.cgi?id=760183> (David Kilzer),<br/>
981 Bug 758572: ASAN crash in make check <https://bugzilla.gnome.org/show_bug.cgi?id=758572> (David Kilzer),<br/>
982 Bug 721158: Missing ICU string when doing --version on xmllint <https://bugzilla.gnome.org/show_bug.cgi?id=721158> (David Kilzer),<br/>
983 python 3: libxml2.c wrappers create Unicode str already (Michael Stahl),<br/>
984 Add autogen.sh to distrib (orzen),<br/>
985 Heap-based buffer overread in xmlNextChar (Daniel Veillard)<br/>
988 <li>Improvements:<br/>
989 Add more debugging info to runtest (Daniel Veillard),<br/>
990 Implement "runtest -u" mode (David Kilzer),<br/>
991 Add a make rule to rebuild for ASAN (Daniel Veillard)<br/>
994 <h3>v2.9.3: Nov 20 2015</h3>
997 CVE-2015-8242 Buffer overead with HTML parser in push mode (Hugh Davenport),<br/>
998 CVE-2015-7500 Fix memory access error due to incorrect entities boundaries (Daniel Veillard),<br/>
999 CVE-2015-7499-2 Detect incoherency on GROW (Daniel Veillard),<br/>
1000 CVE-2015-7499-1 Add xmlHaltParser() to stop the parser (Daniel Veillard),<br/>
1001 CVE-2015-5312 Another entity expansion issue (David Drysdale),<br/>
1002 CVE-2015-7497 Avoid an heap buffer overflow in xmlDictComputeFastQKey (David Drysdale),<br/>
1003 CVE-2015-7498 Avoid processing entities after encoding conversion failures (Daniel Veillard),<br/>
1004 CVE-2015-8035 Fix XZ compression support loop (Daniel Veillard),<br/>
1005 CVE-2015-7942-2 Fix an error in previous Conditional section patch (Daniel Veillard),<br/>
1006 CVE-2015-7942 Another variation of overflow in Conditional sections (Daniel Veillard),<br/>
1007 CVE-2015-1819 Enforce the reader to run in constant memory (Daniel Veillard)<br/>
1008 CVE-2015-7941_2 Cleanup conditional section error handling (Daniel Veillard),<br/>
1009 CVE-2015-7941_1 Stop parsing on entities boundaries errors (Daniel Veillard),<br/>
1012 <li>Documentation:<br/>
1013 Correct spelling of "calling" (Alex Henrie),<br/>
1014 Fix a small error in xmllint --format description (Fabien Degomme),<br/>
1015 Avoid XSS on the search of xmlsoft.org (Daniel Veillard)<br/>
1018 <li>Portability:<br/>
1019 threads: use forward declarations only for glibc (Michael Heimpold),<br/>
1020 Update Win32 configure.js to search for configure.ac (Daniel Veillard)<br/>
1024 Bug on creating new stream from entity (Daniel Veillard),<br/>
1025 Fix some loop issues embedding NEXT (Daniel Veillard),<br/>
1026 Do not print error context when there is none (Daniel Veillard),<br/>
1027 Avoid extra processing of MarkupDecl when EOF (Hugh Davenport),<br/>
1028 Fix parsing short unclosed comment uninitialized access (Daniel Veillard),<br/>
1029 Add missing Null check in xmlParseExternalEntityPrivate (Gaurav Gupta),<br/>
1030 Fix a bug in CData error handling in the push parser (Daniel Veillard),<br/>
1031 Fix a bug on name parsing at the end of current input buffer (Daniel Veillard),<br/>
1032 Fix the spurious ID already defined error (Daniel Veillard),<br/>
1033 Fix previous change to node sort order (Nick Wellnhofer),<br/>
1034 Fix a self assignment issue raised by clang (Scott Graham),<br/>
1035 Fail parsing early on if encoding conversion failed (Daniel Veillard),<br/>
1036 Do not process encoding values if the declaration if broken (Daniel Veillard),<br/>
1037 Silence clang's -Wunknown-attribute (Michael Catanzaro),<br/>
1038 xmlMemUsed is not thread-safe (Martin von Gagern),<br/>
1039 Fix support for except in nameclasses (Daniel Veillard),<br/>
1040 Fix order of root nodes (Nick Wellnhofer),<br/>
1041 Allow attributes on descendant-or-self axis (Nick Wellnhofer),<br/>
1042 Fix the fix to Windows locking (Steve Nairn),<br/>
1043 Fix timsort invariant loop re: Envisage article (Christopher Swenson),<br/>
1044 Don't add IDs in xmlSetTreeDoc (Nick Wellnhofer),<br/>
1045 Account for ID attributes in xmlSetTreeDoc (Nick Wellnhofer),<br/>
1046 Remove various unused value assignments (Philip Withnall),<br/>
1047 Fix missing entities after CVE-2014-3660 fix (Daniel Veillard),<br/>
1048 Revert "Missing initialization for the catalog module" (Daniel Veillard)<br/>
1051 <li>Improvements:<br/>
1052 Reuse xmlHaltParser() where it makes sense (Daniel Veillard),<br/>
1053 xmlStopParser reset errNo (Daniel Veillard),<br/>
1054 Reenable xz support by default (Daniel Veillard),<br/>
1055 Recover unescaped less-than character in HTML recovery parsing (Daniel Veillard),<br/>
1056 Allow HTML serializer to output HTML5 DOCTYPE (Shaun McCance),<br/>
1057 Regression test for bug #695699 (Nick Wellnhofer),<br/>
1058 Add a couple of XPath tests (Nick Wellnhofer),<br/>
1059 Add Python 3 rpm subpackage (Tomas Radej),<br/>
1060 libxml2-config.cmake.in: update include directories (Samuel Martin),<br/>
1061 Adding example from bugs 738805 to regression tests (Daniel Veillard)<br/>
1067 <h3>2.9.2: Oct 16 2014</h3>
1070 Fix for CVE-2014-3660 billion laugh variant (Daniel Veillard),<br/>
1071 CVE-2014-0191 Do not fetch external parameter entities (Daniel Veillard)<br/>
1075 fix memory leak xml header encoding field with XML_PARSE_IGNORE_ENC (Bart De Schuymer),<br/>
1076 xmlmemory: handle realloc properly (Yegor Yefremov),<br/>
1077 Python generator bug raised by the const change (Daniel Veillard),<br/>
1078 Windows Critical sections not released correctly (Daniel Veillard),<br/>
1079 Parser error on repeated recursive entity expansion containing &lt; (Daniel Veillard),<br/>
1080 xpointer : fixing Null Pointers (Gaurav Gupta),<br/>
1081 Remove Unnecessary Null check in xpointer.c (Gaurav Gupta),<br/>
1082 parser bug on misformed namespace attributes (Dennis Filder),<br/>
1083 Pointer dereferenced before null check (Daniel Veillard),<br/>
1084 Leak of struct addrinfo in xmlNanoFTPConnect() (Gaurav Gupta),<br/>
1085 Possible overflow in HTMLParser.c (Daniel Veillard),<br/>
1086 python/tests/sync.py assumes Python dictionaries are ordered (John Beck),<br/>
1087 Fix Enum check and missing break (Gaurav Gupta),<br/>
1088 xmlIO: Handle error returns from dup() (Philip Withnall),<br/>
1089 Fix a problem properly saving URIs (Daniel Veillard),<br/>
1090 wrong error column in structured error when parsing attribute values (Juergen Keil),<br/>
1091 wrong error column in structured error when skipping whitespace in xml decl (Juergen Keil),<br/>
1092 no error column in structured error handler for xml schema validation errors (Juergen Keil),<br/>
1093 Couple of Missing Null checks (Gaurav Gupta),<br/>
1094 Add couple of missing Null checks (Daniel Veillard),<br/>
1095 xmlschemastypes: Fix potential array overflow (Philip Withnall),<br/>
1096 runtest: Fix a memory leak on parse failure (Philip Withnall),<br/>
1097 xmlIO: Fix an FD leak on gzdopen() failure (Philip Withnall),<br/>
1098 xmlcatalog: Fix a memory leak on quit (Philip Withnall),<br/>
1099 HTMLparser: Correctly initialise a stack allocated structure (Philip Withnall),<br/>
1100 Check for tmon in _xmlSchemaDateAdd() is incorrect (David Kilzer),<br/>
1101 Avoid Possible Null Pointer in trio.c (Gaurav Gupta),<br/>
1102 Fix processing in SAX2 in case of an allocation failure (Daniel Veillard),<br/>
1103 XML Shell command "cd" does not handle "/" at end of path (Daniel Veillard),<br/>
1104 Fix various Missing Null checks (Gaurav Gupta),<br/>
1105 Fix a potential NULL dereference (Daniel Veillard),<br/>
1106 Add a couple of misisng check in xmlRelaxNGCleanupTree (Gaurav Gupta),<br/>
1107 Add a missing argument check (Gaurav Gupta),<br/>
1108 Adding a check in case of allocation error (Gaurav Gupta),<br/>
1109 xmlSaveUri() incorrectly recomposes URIs with rootless paths (Dennis Filder),<br/>
1110 Adding some missing NULL checks (Gaurav),<br/>
1111 Fixes for xmlInitParserCtxt (Daniel Veillard),<br/>
1112 Fix regressions introduced by CVE-2014-0191 patch (Daniel Veillard),<br/>
1113 erroneously ignores a validation error if no error callback set (Daniel Veillard),<br/>
1114 xmllint was not parsing the --c14n11 flag (Sérgio Batista),<br/>
1115 Avoid Possible null pointer dereference in memory debug mode (Gaurav),<br/>
1116 Avoid Double Null Check (Gaurav),<br/>
1117 Restore context size and position after XPATH_OP_ARG (Nick Wellnhofer),<br/>
1118 Fix xmlParseInNodeContext() if node is not element (Daniel Veillard),<br/>
1119 Avoid a possible NULL pointer dereference (Gaurav),<br/>
1120 Fix xmlTextWriterWriteElement when a null content is given (Daniel Veillard),<br/>
1121 Fix an typo 'onrest' in htmlScriptAttributes (Daniel Veillard),<br/>
1122 fixing a ptotential uninitialized access (Daniel Veillard),<br/>
1123 Fix an fd leak in an error case (Daniel Veillard),<br/>
1124 Missing initialization for the catalog module (Daniel Veillard),<br/>
1125 Handling of XPath function arguments in error case (Nick Wellnhofer),<br/>
1126 Fix a couple of missing NULL checks (Gaurav),<br/>
1127 Avoid a possibility of dangling encoding handler (Gaurav),<br/>
1128 Fix HTML push parser to accept HTML_PARSE_NODEFDTD (Arnold Hendriks),<br/>
1129 Fix a bug loading some compressed files (Mike Alexander),<br/>
1130 Fix XPath node comparison bug (Gaurav),<br/>
1131 Type mismatch in xmlschemas.c (Gaurav),<br/>
1132 Type mismatch in xmlschemastypes.c (Gaurav),<br/>
1133 Avoid a deadcode in catalog.c (Daniel Veillard),<br/>
1134 run close socket on Solaris, same as we do on other platforms (Denis Pauk),<br/>
1135 Fix pointer dereferenced before null check (Gaurav),<br/>
1136 Fix a potential NULL dereference in tree code (Daniel Veillard),<br/>
1137 Fix potential NULL pointer dereferences in regexp code (Gaurav),<br/>
1138 xmllint --pretty crashed without following numeric argument (Tim Galeckas),<br/>
1139 Fix XPath expressions of the form '@ns:*' (Nick Wellnhofer),<br/>
1140 Fix XPath '//' optimization with predicates (Nick Wellnhofer),<br/>
1141 Clear up a potential NULL dereference (Daniel Veillard),<br/>
1142 Fix a possible NULL dereference (Gaurav),<br/>
1143 Avoid crash if allocation fails (Daniel Veillard),<br/>
1144 Remove occasional leading space in XPath number formatting (Daniel Veillard),<br/>
1145 Fix handling of mmap errors (Daniel Veillard),<br/>
1146 Catch malloc error and exit accordingly (Daniel Veillard),<br/>
1147 missing else in xlink.c (Ami Fischman),<br/>
1148 Fix a parsing bug on non-ascii element and CR/LF usage (Daniel Veillard),<br/>
1149 Fix a regression in xmlGetDocCompressMode() (Daniel Veillard),<br/>
1150 properly quote the namespace uris written out during c14n (Aleksey Sanin),<br/>
1151 Remove premature XInclude check on URI being relative (Alexey Neyman),<br/>
1152 Fix missing break on last() function for attributes (dcb),<br/>
1153 Do not URI escape in server side includes (Romain Bondue),<br/>
1154 Fix an error in xmlCleanupParser (Alexander Pastukhov)<br/>
1157 <li>Documentation:<br/>
1158 typo in error messages "colon are forbidden from..." (Daniel Veillard),<br/>
1159 Fix a link to James SAX documentation old page (Daniel Veillard),<br/>
1160 Fix typos in relaxng.c (Jan Pokorný),<br/>
1161 Fix a doc typo (Daniel Veillard),<br/>
1162 Fix typos in {tree,xpath}.c (errror) (Jan Pokorný),<br/>
1163 Add limitations about encoding conversion (Daniel Veillard),<br/>
1164 Fix typos in xmlschemas{,types}.c (Jan Pokorný),<br/>
1165 Fix incorrect spelling entites->entities (Jan Pokorný),<br/>
1166 Forgot to document 2.9.1 release, regenerate docs (Daniel Veillard)<br/>
1169 <li>Portability:<br/>
1170 AC_CONFIG_FILES and executable bit (Roumen Petrov),<br/>
1171 remove HAVE_CONFIG_H dependency in testlimits.c (Roumen Petrov),<br/>
1172 fix some tabs mixing incompatible with python3 (Roumen Petrov),<br/>
1173 Visual Studio 14 CTP defines snprintf() (Francis Dupont),<br/>
1174 OS400: do not try to copy unexisting doc files (Patrick Monnerat),<br/>
1175 OS400: use either configure.ac or configure.in. (Patrick Monnerat),<br/>
1176 os400: make-src.sh: create physical file with target CCSID (Patrick Monnerat),<br/>
1177 OS400: Add some more C macros equivalent procedures. (Patrick Monnerat),<br/>
1178 OS400: use C macros to implement equivalent RPG support procedures. (Patrick Monnerat),<br/>
1179 OS400: implement XPath macros as procedures for ILE/RPG support. (Patrick Monnerat),<br/>
1180 OS400: include in distribution tarball. (Patrick Monnerat),<br/>
1181 OS400: Add README: compilation directives and OS/400 specific stuff. (Patrick Monnerat),<br/>
1182 OS400: Add compilation scripts. (Patrick Monnerat),<br/>
1183 OS400: ILE RPG language header files. (Patrick Monnerat),<br/>
1184 OS400: implement some macros as functions for ILE/RPG language support (that as no macros). (Patrick Monnerat),<br/>
1185 OS400: UTF8<-->EBCDIC wrappers for system and external library calls (Patrick Monnerat),<br/>
1186 OS400: Easy character transcoding support (Patrick Monnerat),<br/>
1187 OS400: iconv functions compatibility wrappers and table builder. (Patrick Monnerat),<br/>
1188 OS400: create architecture directory. Implement dlfcn emulation. (Patrick Monnerat),<br/>
1189 Fix building when configuring without xpath and xptr (Daniel Veillard),<br/>
1190 configure: Add --with-python-install-dir (Jonas Eriksson),<br/>
1191 Fix compilation with minimum and xinclude. (Nicolas Le Cam),<br/>
1192 Compile out use of xmlValidateNCName() when not available. (Nicolas Le Cam),<br/>
1193 Fix compilation with minimum and schematron. (Nicolas Le Cam),<br/>
1194 Legacy needs xmlSAX2StartElement() and xmlSAX2EndElement(). (Nicolas Le Cam),<br/>
1195 Don't use xmlValidateName() when not available. (Nicolas Le Cam),<br/>
1196 Fix a portability issue on Windows (Longstreth Jon),<br/>
1197 Various portability patches for OpenVMS (Jacob (Jouk) Jansen),<br/>
1198 Use specific macros for portability to OS/400 (Patrick Monnerat),<br/>
1199 Add macros needed for OS/400 portability (Patrick Monnerat),<br/>
1200 Portability patch for fopen on OS/400 (Patrick Monnerat),<br/>
1201 Portability fixes for OS/400 (Patrick Monnerat),<br/>
1202 Improve va_list portability (Patrick Monnerat),<br/>
1203 Portability fix (Patrick Monnerat),<br/>
1204 Portability fix (Patrick Monnerat),<br/>
1205 Generic portability fix (Patrick Monnerat),<br/>
1206 Shortening lines in headers (Patrick Monnerat),<br/>
1207 build: Use pkg-config to find liblzma in preference to AC_CHECK_LIB (Philip Withnall),<br/>
1208 build: Add @LZMA_LIBS@ to libxml’s pkg-config files (Philip Withnall),<br/>
1209 fix some tabs mixing incompatible with python3 (Daniel Veillard),<br/>
1210 add additional defines checks for support "./configure --with-minimum" (Denis Pauk),<br/>
1211 Another round of fixes for older versions of Python (Arfrever Frehtes Taifersar Arahesis),<br/>
1212 python: fix drv_libxml2.py for python3 compatibility (Alexandre Rostovtsev),<br/>
1213 python: Fix compiler warnings when building python3 bindings (Armin K),<br/>
1214 Fix for compilation with python 2.6.8 (Petr Sumbera)<br/>
1217 <li>Improvements:<br/>
1218 win32/libxml2.def.src after rebuild in doc (Roumen Petrov),<br/>
1219 elfgcchack.h: more legacy needs xmlSAX2StartElement() and xmlSAX2EndElement() (Roumen Petrov),<br/>
1220 elfgcchack.h: add xmlXPathNodeEval and xmlXPathSetContextNode (Roumen Petrov),<br/>
1221 Provide cmake module (Samuel Martin),<br/>
1222 Fix a couple of issues raised by make dist (Daniel Veillard),<br/>
1223 Fix and add const qualifiers (Kurt Roeckx),<br/>
1224 Preparing for upcoming release of 2.9.2 (Daniel Veillard),<br/>
1225 Fix zlib and lzma libraries check via command line (Dmitriy),<br/>
1226 wrong error column in structured error when parsing end tag (Juergen Keil),<br/>
1227 doc/news.html: small update to avoid line join while generating NEWS. (Patrick Monnerat),<br/>
1228 Add methods for python3 iterator (Ron Angeles),<br/>
1229 Support element node traversal in document fragments. (Kyle VanderBeek),<br/>
1230 xmlNodeSetName: Allow setting the name to a substring of the currently set name (Tristan Van Berkom),<br/>
1231 Added macros for argument casts (Eric Zurcher),<br/>
1232 adding init calls to xml and html Read parsing entry points (Daniel Veillard),<br/>
1233 Get rid of 'REPLACEMENT CHARACTER' Unicode chars in xmlschemas.c (Jan Pokorný),<br/>
1234 Implement choice for name classes on attributes (Shaun McCance),<br/>
1235 Two small namespace tweaks (Daniel Veillard),<br/>
1236 xmllint --memory should fail on empty files (Daniel Veillard),<br/>
1237 Cast encoding name to char pointer to match arg type (Nikolay Sivov)<br/>
1241 Removal of old configure.in (Daniel Veillard),<br/>
1242 Unreachable code in tree.c (Gaurav Gupta),<br/>
1243 Remove a couple of dead conditions (Gaurav Gupta),<br/>
1244 Avoid some dead code and cleanup in relaxng.c (Gaurav),<br/>
1245 Drop not needed checks (Denis Pauk),<br/>
1246 Fix a wrong test (Daniel Veillard)<br/>
1249 <h3>2.9.1: Apr 19 2013</h3>
1252 Support for Python3 (Daniel Veillard),<br/>
1253 Add xmlXPathSetContextNode and xmlXPathNodeEval (Alex Bligh)<br/>
1256 <li> Documentation:<br/>
1257 Add documentation for xmllint --xpath (Daniel Veillard),<br/>
1258 Fix the URL of the SAX documentation from James (Daniel Veillard),<br/>
1259 Fix spelling of "length". (Michael Wood)<br/>
1262 <li> Portability:<br/>
1263 Fix python bindings with versions older than 2.7 (Daniel Veillard),<br/>
1264 rebuild docs:Makefile.am (Roumen Petrov),<br/>
1265 elfgcchack.h after rebuild in doc (Roumen Petrov),<br/>
1266 elfgcchack for buf module (Roumen Petrov),<br/>
1267 Fix a uneeded and wrong extra link parameter (Daniel Veillard),<br/>
1268 Few cleanup patches for Windows (Denis Pauk),<br/>
1269 Fix rpmbuild --nocheck (Mark Salter),<br/>
1270 Fix for win32/configure.js and WITH_THREAD_ALLOC (Daniel Richard),<br/>
1271 Fix Broken multi-arch support in xml2-config (Daniel Veillard),<br/>
1272 Fix a portability issue for GCC < 3.4.0 (Daniel Veillard),<br/>
1273 Windows build fixes (Daniel Richard),<br/>
1274 Fix a thread portability problem (Friedrich Haubensak),<br/>
1275 Downgrade autoconf requirement to 2.63 (Daniel Veillard)<br/>
1278 <li> Bug Fixes:<br/>
1279 Fix a linking error for python bindings (Daniel Veillard),<br/>
1280 Fix a couple of return without value (Jüri Aedla),<br/>
1281 Improve the hashing functions (Daniel Franke),<br/>
1282 Improve handling of xmlStopParser() (Daniel Veillard),<br/>
1283 Remove risk of lockup in dictionary initialization (Daniel Veillard),<br/>
1284 Activate detection of encoding in external subset (Daniel Veillard),<br/>
1285 Fix an output buffer flushing conversion bug (Mikhail Titov),<br/>
1286 Fix an old bug in xmlSchemaValidateOneElement (Csaba László),<br/>
1287 Fix configure cannot remove messages (Gilles Espinasse),<br/>
1288 fix schema validation in combination with xsi:nil (Daniel Veillard),<br/>
1289 xmlCtxtReadFile doesn't work with literal IPv6 URLs (Steve Wolf),<br/>
1290 Fix a few problems with setEntityLoader (Alexey Neyman),<br/>
1291 Detect excessive entities expansion upon replacement (Daniel Veillard),<br/>
1292 Fix the flushing out of raw buffers on encoding conversions (Daniel,<br/>
1294 Fix some buffer conversion issues (Daniel Veillard),<br/>
1295 When calling xmlNodeDump make sure we grow the buffer quickly (Daniel,<br/>
1297 Fix an error in the progressive DTD parsing code (Dan Winship),<br/>
1298 xmllint should not load DTD by default when using the reader (Daniel,<br/>
1300 Try IBM-037 when looking for EBCDIC handlers (Petr Sumbera),<br/>
1301 Fix potential out of bound access (Daniel Veillard),<br/>
1302 Fix large parse of file from memory (Daniel Veillard),<br/>
1303 Fix a bug in the nsclean option of the parser (Daniel Veillard),<br/>
1304 Fix a regression in 2.9.0 breaking validation while streaming (Daniel,<br/>
1306 Remove potential calls to exit() (Daniel Veillard)<br/>
1309 <li> Improvements:<br/>
1310 Regenerated API, and testapi, rebuild documentation (Daniel Veillard),<br/>
1311 Fix tree iterators broken by 2to3 script (Daniel Veillard),<br/>
1312 update all tests for Python3 and Python2 (Daniel Veillard),<br/>
1313 A few more fixes for python 3 affecting libxml2.py (Daniel Veillard),<br/>
1314 Fix compilation on Python3 (Daniel Veillard),<br/>
1315 Converting apibuild.py to python3 (Daniel Veillard),<br/>
1316 First pass at starting porting to python3 (Daniel Veillard),<br/>
1317 updated configure.in for python3 (Daniel Veillard),<br/>
1318 Add support for xpathRegisterVariable in Python (Shaun McCance),<br/>
1319 Added a regression tests from bug 694228 data (Daniel Veillard),<br/>
1320 Cache presence of '<' in entities content (Daniel Veillard),<br/>
1321 Avoid extra processing on entities (Daniel Veillard),<br/>
1322 Python binding for xmlRegisterInputCallback (Alexey Neyman),<br/>
1323 Python bindings: DOM casts everything to xmlNode (Alexey Neyman),<br/>
1324 Define LIBXML_THREAD_ALLOC_ENABLED via xmlversion.h (Tim Starling),<br/>
1325 Adding streaming validation to runtest checks (Daniel Veillard),<br/>
1326 Add a --pushsmall option to xmllint (Daniel Veillard)<br/>
1330 Switched comment in file to UTF-8 encoding (Daniel Veillard),<br/>
1331 Extend gitignore (Daniel Veillard),<br/>
1332 Silent the new python test on input (Alexey Neyman),<br/>
1333 Cleanup of a duplicate test (Daniel Veillard),<br/>
1334 Cleanup on duplicate test expressions (Daniel Veillard),<br/>
1335 Fix compiler warning after 153cf15905cf4ec080612ada6703757d10caba1e (Patrick,<br/>
1337 Spec cleanups and a fix for multiarch support (Daniel Veillard),<br/>
1338 Silence a clang warning (Daniel Veillard),<br/>
1339 Cleanup the Copyright to be pure MIT Licence wording (Daniel Veillard),<br/>
1340 rand_seed should be static in dict.c (Wouter Van Rooy),<br/>
1341 Fix typos in parser comments (Jan Pokorný)<br/>
1344 <h3>2.9.0: Sep 11 2012</h3>
1347 A few new API entry points,<br/>
1348 More resilient push parser mode,<br/>
1349 A lot of portability improvement,<br/>
1350 Faster XPath evaluation<br/>
1353 <li> Documentation:<br/>
1354 xml2-config.1 markup error (Christian Weisgerber),<br/>
1355 libxml(3) manpage typo fix (John Bradshaw),<br/>
1356 More cleanups to the documentation part of libxml2 (Daniel Richard G)<br/>
1359 <li> Portability:<br/>
1360 Bug 676544 - fails to build with --without-sax1 (Akira TAGOH),<br/>
1361 fix builds not having stdint.h (Rob Richards),<br/>
1362 GetProcAddressA is available only on WinCE (Daniel Veillard),<br/>
1363 More updates and cleanups on autotools and Makefiles (Daniel Richard G),<br/>
1364 More changes for Win32 compilation (Eric Zurcher),<br/>
1365 Basic changes for Win32 builds of release 2.9.0: compile buf.c (Eric Zurcher),<br/>
1366 Bundles all generated files for python into the distribution (Daniel Richard G),<br/>
1367 Fix compiler warnings of wincecompat.c (Patrick Gansterer),<br/>
1368 Fix non __GNUC__ build (Patrick Gansterer),<br/>
1369 Fix windows unicode build (Patrick Gansterer),<br/>
1370 clean redefinition of {v}snprintf in C-source (Roumen Petrov),<br/>
1371 use xmlBuf... if DEBUG_INPUT is defined (Roumen Petrov),<br/>
1372 fix runtests to use pthreads support for various Unix platforms (Daniel Richard G),<br/>
1373 Various "make distcheck" and portability fixups 2nd part (Daniel Richard G),<br/>
1374 Various "make distcheck" and portability fixups (Daniel Richard G),<br/>
1375 Fix compilation on older Visual Studio (Daniel Veillard)<br/>
1378 <li> Bug Fixes:<br/>
1379 Change the XPath code to percolate allocation errors (Daniel Veillard),<br/>
1380 Fix reuse of xmlInitParser (Daniel Veillard),<br/>
1381 Fix potential crash on entities errors (Daniel Veillard),<br/>
1382 initialize var (Rob Richards),<br/>
1383 Fix the XPath arity check to also check the XPath stack limits (Daniel Veillard),<br/>
1384 Fix problem with specific and generic error handlers (Pietro Cerutti),<br/>
1385 Avoid a potential infinite recursion (Daniel Veillard),<br/>
1386 Fix an XSD error when generating internal automata (Daniel Veillard),<br/>
1387 Patch for xinclude of text using multibyte characters (Vitaly Ostanin),<br/>
1388 Fix a segfault on XSD validation on pattern error (Daniel Veillard),<br/>
1389 Fix missing xmlsave.h module which was ignored in recent builds (Daniel Veillard),<br/>
1390 Add a missing element check (Daniel Veillard),<br/>
1391 Adding various checks on node type though the API (Daniel Veillard),<br/>
1392 Namespace nodes can't be unlinked with xmlUnlinkNode (Daniel Veillard),<br/>
1393 Fix make dist to include new private header files (Daniel Veillard),<br/>
1394 More fixups on the push parser behaviour (Daniel Veillard),<br/>
1395 Strengthen behaviour of the push parser in problematic situations (Daniel Veillard),<br/>
1396 Enforce XML_PARSER_EOF state handling through the parser (Daniel Veillard),<br/>
1397 Fixup limits parser (Daniel Veillard),<br/>
1398 Do not fetch external parsed entities (Daniel Veillard),<br/>
1399 Fix an error in previous commit (Aron Xu),<br/>
1400 Fix entities local buffers size problems (Daniel Veillard),<br/>
1401 Fix parser local buffers size problems (Daniel Veillard),<br/>
1402 Fix a failure to report xmlreader parsing failures (Daniel Veillard)<br/>
1405 <li> Improvements:<br/>
1406 Keep libxml2.syms when running "make distclean" (Daniel Veillard),<br/>
1407 Allow to set the quoting character of an xmlWriter (Csaba Raduly),<br/>
1408 Keep non-significant blanks node in HTML parser (Daniel Veillard),<br/>
1409 Add a forbidden variable error number and message to XPath (Daniel Veillard),<br/>
1410 Support long path names on WNT (Michael Stahl),<br/>
1411 Improve HTML escaping of attribute on output (Daniel Veillard),<br/>
1412 Handle ICU_LIBS as LIBADD, not LDFLAGS to prevent linking errors (Arfrever Frehtes Taifersar Arahesis),<br/>
1413 Switching XPath node sorting to Timsort (Vojtech Fried),<br/>
1414 Optimizing '//' in XPath expressions (Nick Wellnhofer),<br/>
1415 Expose xmlBufShrink in the public tree API (Daniel Veillard),<br/>
1416 Visible HTML elements close the head tag (Conrad Irwin),<br/>
1417 Fix file and line report for XSD SAX and reader streaming validation (Daniel Veillard),<br/>
1418 Fix const qualifyer to definition of xmlBufferDetach (Daniel Veillard),<br/>
1419 minimize use of HAVE_CONFIG_H (Roumen Petrov),<br/>
1420 fixup regression in Various "make distcheck" and portability fixups (Roumen Petrov),<br/>
1421 Add support for big line numbers in error reporting (Daniel Veillard),<br/>
1422 Avoid using xmlBuffer for serialization (Daniel Veillard),<br/>
1423 Improve compatibility between xmlBuf and xmlBuffer (Daniel Veillard),<br/>
1424 Provide new accessors for xmlOutputBuffer (Daniel Veillard),<br/>
1425 Improvements for old buffer compatibility (Daniel Veillard),<br/>
1426 Expand the limit test program (Daniel Veillard),<br/>
1427 Improve error reporting on parser errors (Daniel Veillard),<br/>
1428 Implement some default limits in the XPath module (Daniel Veillard),<br/>
1429 Introduce some default parser limits (Daniel Veillard),<br/>
1430 Cleanups and new limit APIs for dictionaries (Daniel Veillard),<br/>
1431 Fixup for buf.c (Daniel Veillard),<br/>
1432 Cleanup URI module memory allocation code (Daniel Veillard),<br/>
1433 Extend testlimits (Daniel Veillard),<br/>
1434 More avoid quadratic behaviour (Daniel Veillard),<br/>
1435 Impose a reasonable limit on PI size (Daniel Veillard),<br/>
1436 first version of testlimits new test (Daniel Veillard),<br/>
1437 Avoid quadratic behaviour in some push parsing cases (Daniel Veillard),<br/>
1438 Impose a reasonable limit on comment size (Daniel Veillard),<br/>
1439 Impose a reasonable limit on attribute size (Daniel Veillard),<br/>
1440 Harden the buffer code and make it more compatible (Daniel Veillard),<br/>
1441 More cleanups for input/buffers code (Daniel Veillard),<br/>
1442 Cleanup function xmlBufResetInput(),<br/> to set input from Buffer (Daniel Veillard)
1443 Swicth the test program for characters to new input buffers (Daniel Veillard),<br/>
1444 Convert the HTML tree module to the new buffers (Daniel Veillard),<br/>
1445 Convert of the HTML parser to new input buffers (Daniel Veillard),<br/>
1446 Convert the writer to new output buffer and save APIs (Daniel Veillard),<br/>
1447 Convert XMLReader to the new input buffers (Daniel Veillard),<br/>
1448 New saving functions using xmlBuf and conversion (Daniel Veillard),<br/>
1449 Provide new xmlBuf based saving functions (Daniel Veillard),<br/>
1450 Convert XInclude to the new input buffers (Daniel Veillard),<br/>
1451 Convert catalog code to the new input buffers (Daniel Veillard),<br/>
1452 Convert C14N to the new Input buffer (Daniel Veillard),<br/>
1453 Convert xmlIO.c to the new input and output buffers (Daniel Veillard),<br/>
1454 Convert XML parser to the new input buffers (Daniel Veillard),<br/>
1455 Incompatible change to the Input and Output buffers (Daniel Veillard),<br/>
1456 Adding new encoding function to deal with the new structures (Daniel Veillard),<br/>
1457 Convert XPath to xmlBuf (Daniel Veillard),<br/>
1458 Adding a new buf module for buffers (Daniel Veillard),<br/>
1459 Memory error within SAX2 reuse common framework (Daniel Veillard),<br/>
1460 Fix xmllint --xpath node initialization (Daniel Veillard)<br/>
1464 Various cleanups to avoid compiler warnings (Daniel Veillard),<br/>
1465 Big space and tab cleanup (Daniel Veillard),<br/>
1466 Followup to LibXML2 docs/examples cleanup patch (Daniel Veillard),<br/>
1467 Second round of cleanups for LibXML2 docs/examples (Daniel Richard),<br/>
1468 Remove all .cvsignore as they are not used anymore (Daniel Veillard),<br/>
1469 Fix a Timsort function helper comment (Daniel Veillard),<br/>
1470 Small cleanup for valgrind target (Daniel Veillard),<br/>
1471 Patch for portability of latin characters in C files (Daniel Veillard),<br/>
1472 Cleanup some of the parser code (Daniel Veillard),<br/>
1473 Fix a variable name in comment (Daniel Veillard),<br/>
1474 Regenerated testapi.c (Daniel Veillard),<br/>
1475 Regenerating docs and API files (Daniel Veillard),<br/>
1476 Small cleanup of unused variables in test (Daniel Veillard),<br/>
1477 Expand .gitignore with more files (Daniel Veillard)<br/>
1480 <h3>2.8.0: May 23 2012</h3>
1483 add lzma compression support (Anders F Bjorklund)
1487 xmlcatalog: Add uri and delegateURI to possible add types in man page. (Ville Skyttä),
1488 Update README.tests (Daniel Veillard),
1489 URI handling code is not OOM resilient (Daniel Veillard),
1490 Fix an error in comment (Daniel Veillard),
1491 Fixed bug #617016 (Daniel Mustieles),
1492 Fixed two typos in the README document (Daniel Neel),
1493 add generated html files (Anders F Bjorklund),
1494 Clarify the need to use xmlFreeNode after xmlUnlinkNode (Daniel Veillard),
1495 Improve documentation a bit (Daniel Veillard),
1496 Updated URL for lxml python bindings (Daniel Veillard)
1500 Restore code for Windows compilation (Daniel Veillard),
1501 Remove git error message during configure (Christian Dywan),
1502 xmllint: Build fix for endTimer if !defined(HAVE_GETTIMEOFDAY) (Patrick R. Gansterer),
1503 remove a bashism in confgure.in (John Hein),
1504 undef ERROR if already defined (Patrick R. Gansterer),
1505 Fix library problems with mingw-w64 (Michael Cronenworth),
1506 fix windows build. ifdef addition from bug 666491 makes no sense (Rob Richards),
1507 prefer native threads on win32 (Sam Thursfield),
1508 Allow to compile with Visual Studio 2010 (Thomas Lemm),
1509 Fix mingw's snprintf configure check (Andoni Morales),
1510 fixed a 64bit big endian issue (Marcus Meissner),
1511 Fix portability failure if netdb.h lacks NO_ADDRESS (Daniel Veillard),
1512 Fix windows build from lzma addition (Rob Richards),
1513 autogen: Only check for libtoolize (Colin Walters),
1514 Fix the Windows build files (Patrick von Reth),
1515 634846 Remove a linking option breaking Windows VC10 (Daniel Veillard),
1516 599241 fix an initialization problem on Win64 (Andrew W. Nosenko),
1517 fix win build (Rob Richards)
1521 Part for rand_r checking missing (Daniel Veillard),
1522 Cleanup on randomization (Daniel Veillard),
1523 Fix undefined reference in python module (Pacho Ramos),
1524 Fix a race in xmlNewInputStream (Daniel Veillard),
1525 Fix weird streaming RelaxNG errors (Noam),
1526 Fix various bugs in new code raised by the API checking (Daniel Veillard),
1527 Fix various problems with "make dist" (Daniel Veillard),
1528 Fix a memory leak in the xzlib code (Daniel Veillard),
1529 HTML parser error with <noscript> in the <head> (Denis Pauk),
1530 XSD: optional element in complex type extension (Remi Gacogne),
1531 Fix html serialization error and htmlSetMetaEncoding() (Daniel Veillard),
1532 Fix a wrong return value in previous patch (Daniel Veillard),
1533 Fix an uninitialized variable use (Daniel Veillard),
1534 Fix a compilation problem with --minimum (Brandon Slack),
1535 Remove redundant and ungarded include of resolv.h (Daniel Veillard),
1536 xinclude with parse="text" does not use the entity loader (Shaun McCance),
1537 Allow to parse 1 byte HTML files (Denis Pauk),
1538 Patch that fixes the skipping of the HTML_PARSE_NOIMPLIED flag (Martin Schröder),
1539 Avoid memory leak if xmlParserInputBufferCreateIO fails (Lin Yi-Li),
1540 Prevent an infinite loop when dumping a node with encoding problems (Timothy Elliott),
1541 xmlParseNodeInContext problems with an empty document (Tim Elliott),
1542 HTML element position is not detected propperly (Pavel Andrejs),
1543 Fix an off by one pointer access (Jüri Aedla),
1544 Try to fix a problem with entities in SAX mode (Daniel Veillard),
1545 Fix a crash with xmllint --path on empty results (Daniel Veillard),
1546 Fixed bug #667946 (Daniel Mustieles),
1547 Fix a logic error in Schemas Component Constraints (Ryan Sleevi),
1548 Fix a wrong enum type use in Schemas Types (Nico Weber),
1549 Fix SAX2 builder in case of undefined attributes namespace (Daniel Veillard),
1550 Fix SAX2 builder in case of undefined element namespaces (Daniel Veillard),
1551 fix reference to STDOUT_FILENO on MSVC (Tay Ray Chuan),
1552 fix a pair of possible out of array char references (Daniel Veillard),
1553 Fix an allocation error when copying entities (Daniel Veillard),
1554 Make sure the parser returns when getting a Stop order (Chris Evans),
1555 Fix some potential problems on reallocation failures(parser.c) (Xia Xinfeng),
1556 Fix a schema type duration comparison overflow (Daniel Veillard),
1557 Fix an unimplemented part in RNG value validation (Daniel Veillard),
1558 Fix missing error status in XPath evaluation (Daniel Veillard),
1559 Hardening of XPath evaluation (Daniel Veillard),
1560 Fix an off by one error in encoding (Daniel Veillard),
1561 Fix RELAX NG include bug #655288 (Shaun McCance),
1562 Fix XSD validation bug #630130 (Toyoda Eizi),
1563 Fix some potential problems on reallocation failures (Chris Evans),
1564 __xmlRaiseError: fix use of the structured callback channel (Dmitry V. Levin),
1565 __xmlRaiseError: fix the structured callback channel's data initialization (Dmitry V. Levin),
1566 Fix memory corruption when xmlParseBalancedChunkMemoryInternal is called from xmlParseBalancedChunk (Rob Richards),
1567 Small fix for previous commit (Daniel Veillard),
1568 Fix a potential freeing error in XPath (Daniel Veillard),
1569 Fix a potential memory access error (Daniel Veillard),
1570 Reactivate the shared library versionning script (Daniel Veillard)
1574 use mingw C99 compatible functions {v}snprintf instead those from MSVC runtime (Roumen Petrov),
1575 New symbols added for the next release (Daniel Veillard),
1576 xmlTextReader bails too quickly on error (Andy Lutomirski),
1577 Use a hybrid allocation scheme in xmlNodeSetContent (Conrad Irwin),
1578 Use buffers when constructing string node lists. (Conrad Irwin),
1579 Add HTML parser support for HTML5 meta charset encoding declaration (Denis Pauk),
1580 wrong message for double hyphen in comment XML error (Bryan Henderson),
1581 Fix "make tst" to grab lzma lib too (Daniel Veillard),
1582 Add "whereis" command to xmllint shell (Ryan),
1583 Improve xmllint shell (Ryan),
1584 add function xmlTextReaderRelaxNGValidateCtxt() (Noam Postavsky),
1585 Add --system support to autogen.sh (Daniel Veillard),
1586 Add hash randomization to hash and dict structures (Daniel Veillard),
1587 included xzlib in dist (Anders F Bjorklund),
1588 move xz/lzma helpers to separate included files (Anders F Bjorklund),
1589 add generated devhelp files (Anders F Bjorklund),
1590 add XML_WITH_LZMA to api (Anders F Bjorklund),
1591 autogen.sh: Honor NOCONFIGURE environment variable (Colin Walters),
1592 Improve the error report on undefined REFs (Daniel Veillard),
1593 Add exception for new W3C PI xml-model (Daniel Veillard),
1594 Add options to ignore the internal encoding (Daniel Veillard),
1595 testapi: use the right type for the check (Stefan Kost),
1596 various: handle return values of write calls (Stefan Kost),
1597 testWriter: xmlTextWriterWriteFormatElement wants an int instead of a long int (Stefan Kost),
1598 runxmlconf: update to latest testsuite version (Stefan Kost),
1599 configure: add -Wno-long-long to CFLAGS (Stefan Kost),
1600 configure: support silent automake rules if possible (Stefan Kost),
1601 xmlmemory: add a cast as size_t has no portable printf modifier (Stefan Kost),
1602 __xmlRaiseError: remove redundant schannel initialization (Dmitry V. Levin),
1603 __xmlRaiseError: do cheap code check early (Dmitry V. Levin)
1607 Cleanups before 2.8.0-rc2 (Daniel Veillard),
1608 Avoid an extra operation (Daniel Veillard),
1609 Remove vestigial de-ANSI-fication support. (Javier Jardón),
1610 autogen.sh: Fix typo (Javier Jardón),
1611 Do not use unsigned but unsigned int (Daniel Veillard),
1612 Remove two references to u_short (Daniel Veillard),
1613 Fix -Wempty-body warning from clang (Nico Weber),
1614 Cleanups of lzma support (Daniel Veillard),
1615 Augment the list of ignored files (Daniel Veillard),
1616 python: remove unused variable (Stefan Kost),
1617 python: flag two unused args (Stefan Kost),
1618 configure: acconfig.h is deprecated since autoconf-2.50 (Stefan Kost),
1619 xpath: remove unused variable (Stefan Kost)
1622 <h3>2.7.8: Nov 4 2010</h3>
1625 480323 add code to plug in ICU converters by default (Giuseppe Iuculano),
1626 Add xmlSaveOption XML_SAVE_WSNONSIG (Adam Spragg)
1629 Fix devhelp documentation installation (Mike Hommey),
1630 Fix web site encoding problems (Daniel Veillard),
1631 Fix a couple of typo in HTML parser error messages (Michael Day),
1632 Forgot to update the news page for 0.7.7 (Daniel Veillard)
1635 607273 Fix python detection on MSys/Windows (LRN),
1636 614087 Fix Socket API usage to allow Windows64 compilation (Ozkan Sezer),
1637 Fix compilation with Clang (Koop Mast),
1638 Fix Win32 build (Rob Richards)
1641 595789 fix a remaining potential Solaris problem (Daniel Veillard),
1642 617468 fix progressive HTML parsing with style using "'" (Denis Pauk),
1643 616478 Fix xmllint shell write command (Gwenn Kahz),
1644 614005 Possible erroneous HTML parsing on unterminated script (Pierre Belzile),
1645 627987 Fix XSD IDC errors in imported schemas (Jim Panetta),
1646 629325 XPath rounding errors first cleanup (Phil Shafer),
1647 630140 fix iso995x encoding error (Daniel Veillard),
1648 make sure htmlCtxtReset do reset the disableSAX field (Daniel Veillard),
1649 Fix a change of semantic on XPath preceding and following axis (Daniel Veillard),
1650 Fix a potential segfault due to weak symbols on pthreads (Mike Hommey),
1651 Fix a leak in XPath compilation (Daniel Veillard),
1652 Fix the semantic of XPath axis for namespace/attribute context nodes (Daniel Veillard),
1653 Avoid a descriptor leak in catalog loading code (Carlo Bramini),
1654 Fix a small bug in XPath evaluation code (Marius Wachtler),
1655 Fix handling of XML-1.0 XML namespace declaration (Daniel Veillard),
1656 Fix errors in XSD double validation check (Csaba Raduly),
1657 Fix handling of apos in URIs (Daniel Veillard),
1658 xmlTextReaderReadOuterXml should handle DTD (Rob Richards),
1659 Autogen.sh needs to create m4 directory (Rob Richards)
1662 606592 update language ID parser to RFC 5646 (Daniel Veillard),
1663 Sort python generated stubs (Mike Hommey),
1664 Add an HTML parser option to avoid a default doctype (Daniel Veillard)
1667 618831 don't ship generated files in git (Adrian Bunk),
1668 Switch from the obsolete mkinstalldirs to AC_PROG_MKDIR_P (Adrian Bunk),
1669 Various cleanups on encoding handling (Daniel Veillard),
1670 Fix xmllint to use format=1 for default formatting (Adam Spragg),
1671 Force _xmlSaveCtxt.format to be 0 or 1 (Adam Spragg),
1672 Cleanup encoding pointer comparison (Nikolay Sivov),
1673 Small code cleanup on previous patch (Daniel Veillard)
1676 <h3>2.7.7: Mar 15 2010</h3>
1679 Adding a --xpath option to xmllint (Daniel Veillard),
1680 Make HTML parser non-recursive (Eugene Pimenov)
1683 relaxng.c: cast to allow compilation with sun studio 11 (Ben Walton),
1684 Fix build failure on Sparc solaris (Roumen Petrov),
1685 use autoreconf in autogen.sh (Daniel Veillard),
1686 Fix build with mingw (Roumen Petrov),
1687 Upgrade some of the configure and autogen (Daniel Veillard),
1688 Fix relaxNG tests in runtest for Windows runtest.c: initialize ret (Rob Richards),
1689 Fix a const warning in xmlNodeSetBase (Martin Trappel),
1690 Fix python generator to not use deprecated xmllib (Daniel Veillard),
1691 Update some automake files (Daniel Veillard),
1692 598785 Fix nanohttp on Windows (spadix)
1695 libxml violates the zlib interface and crashes (Mark Adler),
1696 Fix broken escape behaviour in regexp ranges (Daniel Veillard),
1697 Fix missing win32 libraries in libxml-2.0.pc (Volker Grabsch),
1698 Fix detection of python linker flags (Daniel Macks),
1699 fix build error in libxml2/python (Paul Smith),
1700 ChunkParser: Incorrect decoding of small xml files (Raul Hudea),
1701 htmlCheckEncoding doesn't update input-end after shrink (Eugene Pimenov),
1702 Fix a missing #ifdef (Daniel Veillard),
1703 Fix encoding selection for xmlParseInNodeContext (Daniel Veillard),
1704 xmlPreviousElementSibling mistake (François Delyon),
1705 608773 add a missing check in xmlGROW (Daniel Veillard),
1706 Fix xmlParseInNodeContext for HTML content (Daniel Veillard),
1707 Fix lost namespace when copying node * tree.c: reconcile namespace if not found (Rob Richards),
1708 Fix some missing commas in HTML element lists (Eugene Pimenov),
1709 Correct variable type to unsigned (Nikolay Sivov),
1710 Recognize ID attribute in HTML without DOCTYPE (Daniel Veillard),
1711 Fix memory leak in xmlXPathEvalExpression() (Martin),
1712 Fix an init bug in global.c (Kai Henning),
1713 Fix xmlNodeSetBase() comment (Daniel Veillard),
1714 Fix broken escape behaviour in regexp ranges (Daniel Veillard),
1715 Don't give default HTML boolean attribute values in parser (Daniel Veillard),
1716 xmlCtxtResetLastError should reset ctxt-errNo (Daniel Veillard)
1719 Cleanup a couple of weirdness in HTML parser (Eugene Pimenov)
1722 <h3>2.7.6: Oct 6 2009</h3>
1725 Restore thread support in default configuration (Andrew W. Nosenko),
1726 URI with no path parsing problem (Daniel Veillard),
1727 Minor patch for conditional defines in threads.c (Eric Zurcher)
1730 <h3>2.7.5: Sep 24 2009</h3>
1733 Restore behavior of --with-threads without argument (Andrew W. Nosenko),
1734 Fix memory leak when doc is NULL (Rob Richards),
1735 595792 fixing a RelaxNG bug introduced in 2.7.4 (Daniel Veillard),
1736 Fix a Relaxng bug raised by libvirt test suite (Daniel Veillard),
1737 Fix a parsing problem with little data at startup (Daniel Veillard),
1738 link python module with python library (Frederic Crozat),
1739 594874 Forgot an fclose in xmllint (Daniel Veillard)
1742 Adding symbols.xml to EXTRA_DIST (Daniel Veillard)
1745 <h3>2.7.4: Sep 10 2009</h3>
1748 Switch to GIT (GNOME),
1749 Add symbol versioning to libxml2 shared libs (Daniel Veillard)
1752 593857 try to work around thread pbm MinGW 4.4 (Daniel Veillard),
1753 594250 rename ATTRIBUTE_ALLOC_SIZE to avoid clashes (Daniel Veillard),
1754 Fix Windows build * relaxng.c: fix windows build (Rob Richards),
1755 Fix the globals.h to use XMLPUBFUN (Paul Smith),
1756 Problem with extern extern in header (Daniel Veillard),
1757 Add -lnetwork for compiling on Haiku (Scott McCreary),
1758 Runtest portability patch for Solaris (Tim Rice),
1759 Small patch to accomodate the Haiku OS (Scott McCreary),
1760 584605 package VxWorks folder in the distribution (Daniel Veillard),
1761 574017 Realloc too expensive on most platform (Daniel Veillard),
1762 Fix windows build (Rob Richards),
1763 545579 doesn't compile without schema support (Daniel Veillard),
1764 xmllint use xmlGetNodePath when not compiled in (Daniel Veillard),
1765 Try to avoid __imp__xmlFree link trouble on msys (Daniel Veillard),
1766 Allow to select the threading system on Windows (LRN),
1767 Fix Solaris binary links, cleanups (Daniel Veillard),
1768 Bug 571059 â
\80\93 MSVC doesn't work with the bakefile (Intron),
1769 fix ATTRIBUTE_PRINTF header clash (Belgabor and Mike Hommey),
1770 fixes for Borland/CodeGear/Embarcadero compilers (Eric Zurcher)
1773 544910 typo: "renciliateNs" (Leonid Evdokimov),
1774 Add VxWorks to list of OSes (Daniel Veillard),
1775 Regenerate the documentation and update for git (Daniel Veillard),
1776 560524 ¿ xmlTextReaderLocalName description (Daniel Veillard),
1777 Added sponsoring by AOE media for the server (Daniel Veillard),
1778 updated URLs for GNOME (Vincent Lefevre),
1779 more warnings about xmlCleanupThreads and xmlCleanupParser (Daniel Veillard)
1782 594514 memory leaks - duplicate initialization (MOD),
1783 Wrong block opening in htmlNodeDumpOutputInternal (Daniel Veillard),
1784 492317 Fix Relax-NG validation problems (Daniel Veillard),
1785 558452 fight with reg test and error report (Daniel Veillard),
1786 558452 RNG compilation of optional multiple child (Daniel Veillard),
1787 579746 XSD validation not correct / nilable groups (Daniel Veillard),
1788 502960 provide namespace stack when parsing entity (Daniel Veillard),
1789 566012 part 2 fix regresion tests and push mode (Daniel Veillard),
1790 566012 autodetected encoding and encoding conflict (Daniel Veillard),
1791 584220 xpointer(/) and xinclude problems (Daniel Veillard),
1792 587663 Incorrect Attribute-Value Normalization (Daniel Veillard),
1793 444994 HTML chunked failure for attribute with <> (Daniel Veillard),
1794 Fix end of buffer char being split in XML parser (Daniel Veillard),
1795 Non ASCII character may be split at buffer end (Adiel Mittmann),
1796 440226 Add xmlXIncludeProcessTreeFlagsData API (Stefan Behnel),
1797 572129 speed up parsing of large HTML text nodes (Markus Kull),
1798 Fix HTML parsing with 0 character in CDATA (Daniel Veillard),
1799 Fix SetGenericErrorFunc and SetStructured clash (Wang Lam),
1800 566012 Incomplete EBCDIC parsing support (Martin Kogler),
1801 541335 HTML avoid creating 2 head or 2 body element (Daniel Veillard),
1802 541237 error correcting missing end tags in HTML (Daniel Veillard),
1803 583439 missing line numbers in push mode (Daniel Veillard),
1804 587867 xmllint --html --xmlout serializing as HTML (Daniel Veillard),
1805 559501 avoid select and use poll for nanohttp (Raphael Prevost),
1806 559410 - Regexp bug on (...)? constructs (Daniel Veillard),
1807 Fix a small problem on previous HTML parser patch (Daniel Veillard),
1808 592430 - HTML parser runs into endless loop (Daniel Veillard),
1809 447899 potential double free in xmlFreeTextReader (Daniel Veillard),
1810 446613 small validation bug mixed content with NS (Daniel Veillard),
1811 Fix the problem of revalidating a doc with RNG (Daniel Veillard),
1812 Fix xmlKeepBlanksDefault to not break indent (Nick Wellnhofer),
1813 512131 refs from externalRef part need to be added (Daniel Veillard),
1814 512131 crash in xmlRelaxNGValidateFullElement (Daniel Veillard),
1815 588441 allow '.' in HTML Names even if invalid (Daniel Veillard),
1816 582913 Fix htmlSetMetaEncoding() to be nicer (Daniel Veillard),
1817 579317 Try to find the HTML encoding information (Daniel Veillard),
1818 575875 don't output charset=html (Daniel Veillard),
1819 571271 fix semantic of xsd:all with minOccurs=0 (Daniel Veillard),
1820 570702 fix a bug in regexp determinism checking (Daniel Veillard),
1821 567619 xmlValidateNotationUse missing param test (Daniel Veillard),
1822 574393 ¿ utf-8 filename magic for compressed files (Hans Breuer),
1823 Fix a couple of problems in the parser (Daniel Veillard),
1824 585505 ¿ Document ids and refs populated by XSD (Wayne Jensen),
1825 582906 XSD validating multiple imports of the same schema (Jason Childs),
1826 Bug 582887 ¿ problems validating complex schemas (Jason Childs),
1827 Bug 579729 ¿ fix XSD schemas parsing crash (Miroslav Bajtos),
1828 576368 ¿ htmlChunkParser with special attributes (Jiri Netolicky),
1829 Bug 565747 ¿ relax anyURI data character checking (Vincent Lefevre),
1830 Preserve attributes of include start on tree copy (Petr Pajas),
1831 Skip silently unrecognized XPointer schemes (Jakub Wilk),
1832 Fix leak on SAX1, xmllint --sax1 option and debug (Daniel Veillard),
1833 potential NULL dereference on non-glibc (Jim Meyering),
1834 Fix an XSD validation crash (Daniel Veillard),
1835 Fix a regression in streaming entities support (Daniel Veillard),
1836 Fix a couple of ABI issues with C14N 1.1 (Aleksey Sanin),
1837 Aleksey Sanin support for c14n 1.1 (Aleksey Sanin),
1838 reader bug fix with entities (Daniel Veillard),
1839 use options from current parser ctxt for external entities (Rob Richards),
1840 581612 use %s to printf strings (Christian Persch),
1841 584605 change the threading initialization sequence (Igor Novoseltsev),
1842 580705 keep line numbers in HTML parser (Aaron Patterson),
1843 581803 broken HTML table attributes init (Roland Steiner),
1844 do not set error code in xmlNsWarn (Rob Richards),
1845 564217 fix structured error handling problems,
1846 reuse options from current parser for entities (Rob Richards),
1847 xmlXPathRegisterNs should not allow enpty prefixes (Daniel Veillard),
1848 add a missing check in xmlAddSibling (Kris Breuker),
1849 avoid leaks on errors (Jinmei Tatuya)
1852 Chasing dead assignments reported by clang-scan (Daniel Veillard),
1853 A few more safety cleanup raised by scan (Daniel Veillard),
1854 Fixing assorted potential problems raised by scan (Daniel Veillard),
1855 Potential uninitialized arguments raised by scan (Daniel Veillard),
1856 Fix a bunch of scan 'dead increments' and cleanup (Daniel Veillard),
1857 Remove a pedantic warning (Daniel Veillard),
1858 555833 always use rm -f in uninstall-local (Daniel Veillard),
1859 542394 xmlRegisterOutputCallbacks MAX_INPUT_CALLBACK (Daniel Veillard),
1860 Autoregenerate libxml2.syms automated checkings (Daniel Veillard),
1861 Make xmlRecoverDoc const (Martin Trappel) (Daniel Veillard),
1862 Both args of xmlStrcasestr are const (Daniel Veillard),
1863 hide the nbParse* variables used for debugging (Mike Hommey),
1864 570806 changed include of config.h (William M. Brack),
1865 cleanups and error reports when xmlTextWriterVSprintf fails (Jinmei Tatuya)
1868 <h3>2.7.3: Jan 18 2009</h3>
1870 <li>Build fix: fix build when HTML support is not included.</li>
1871 <li>Bug fixes: avoid memory overflow in gigantic text nodes,
1872 indentation problem on the writed (Rob Richards),
1873 xmlAddChildList pointer problem (Rob Richards and Kevin Milburn),
1874 xmlAddChild problem with attribute (Rob Richards and Kris Breuker),
1875 avoid a memory leak in an edge case (Daniel Zimmermann),
1876 deallocate some pthread data (Alex Ott).</li>
1877 <li>Improvements: configure option to avoid rebuilding docs (Adrian Bunk),
1878 limit text nodes to 10MB max by default, add element traversal
1879 APIs, add a parser option to enable pre 2.7 SAX behavior (Rob Richards),
1880 add gcc malloc checking (Marcus Meissner), add gcc printf like functions
1881 parameters checking (Marcus Meissner).</li>
1883 <h3>2.7.2: Oct 3 2008</h3>
1885 <li>Portability fix: fix solaris compilation problem, fix compilation
1886 if XPath is not configured in</li>
1887 <li>Bug fixes: nasty entity bug introduced in 2.7.0, restore old behaviour
1888 when saving an HTML doc with an xml dump function, HTML UTF-8 parsing
1889 bug, fix reader custom error handlers (Riccardo Scussat)
1890 <li>Improvement: xmlSave options for more flexibility to save as
1891 XML/HTML/XHTML, handle leading BOM in HTML documents</li>
1894 <h3>2.7.1: Sep 1 2008</h3>
1896 <li>Portability fix: Borland C fix (Moritz Both)</li>
1897 <li>Bug fixes: python serialization wrappers, XPath QName corner
1898 case handking and leaks (Martin)</li>
1899 <li>Improvement: extend the xmlSave to handle HTML documents and trees</li>
1900 <li>Cleanup: python serialization wrappers</li>
1903 <h3>2.7.0: Aug 30 2008</h3>
1905 <li>Documentation: switch ChangeLog to UTF-8, improve mutithreads and
1906 xmlParserCleanup docs</li>
1907 <li>Portability fixes: Older Win32 platforms (Rob Richards), MSVC
1908 porting fix (Rob Richards), Mac OS X regression tests (Sven Herzberg),
1909 non GNUCC builds (Rob Richards), compilation on Haiku (Andreas Färber)
1911 <li>Bug fixes: various realloc problems (Ashwin), potential double-free
1912 (Ashwin), regexp crash, icrash with invalid whitespace facets (Rob
1913 Richards), pattern fix when streaming (William Brack), various XML
1914 parsing and validation fixes based on the W3C regression tests, reader
1915 tree skipping function fix (Ashwin), Schemas regexps escaping fix
1916 (Volker Grabsch), handling of entity push errors (Ashwin), fix a slowdown
1917 when encoder cant serialize characters on output</li>
1918 <li>Code cleanup: compilation fix without the reader, without the output
1919 (Robert Schwebel), python whitespace (Martin), many space/tabs cleanups,
1920 serious cleanup of the entity handling code</li>
1921 <li>Improvement: switch parser to XML-1.0 5th edition, add parsing flags
1922 for old versions, switch URI parsing to RFC 3986,
1923 add xmlSchemaValidCtxtGetParserCtxt (Holger Kaelberer),
1924 new hashing functions for dictionnaries (based on Stefan Behnel work),
1925 improve handling of misplaced html/head/body in HTML parser, better
1926 regression test tools and code coverage display, better algorithms
1927 to detect various versions of the billion laughts attacks, make
1928 arbitrary parser limits avoidable as a parser option</li>
1930 <h3>2.6.32: Apr 8 2008</h3>
1932 <li>Documentation: returning heap memory to kernel (Wolfram Sang),
1933 trying to clarify xmlCleanupParser() use, xmlXPathContext improvement
1934 (Jack Jansen), improve the *Recover* functions documentation,
1935 XmlNodeType doc link fix (Martijn Arts)</li>
1936 <li>Bug fixes: internal subset memory leak (Ashwin), avoid problem with
1937 paths starting with // (Petr Sumbera), streaming XSD validation callback
1938 patches (Ashwin), fix redirection on port other than 80 (William Brack),
1939 SAX2 leak (Ashwin), XInclude fragment of own document (Chris Ryan),
1940 regexp bug with '.' (Andrew Tosh), flush the writer at the end of the
1941 document (Alfred Mickautsch), output I/O bug fix (William Brack),
1942 writer CDATA output after a text node (Alex Khesin), UTF-16 encoding
1943 detection (William Brack), fix handling of empty CDATA nodes for Safari
1944 team, python binding problem with namespace nodes, improve HTML parsing
1945 (Arnold Hendriks), regexp automata build bug, memory leak fix (Vasily
1946 Chekalkin), XSD test crash, weird system parameter entity parsing problem,
1947 allow save to file:///X:/ windows paths, various attribute normalisation
1948 problems, externalSubsetSplit fix (Ashwin), attribute redefinition in
1949 the DTD (Ashwin), fix in char ref parsing check (Alex Khesin), many
1950 out of memory handling fixes (Ashwin), XPath out of memory handling fixes
1951 (Alvaro Herrera), various realloc problems (Ashwin), UCS4 encoding
1952 conversion buffer size (Christian Fruth), problems with EatName
1953 functions on memory errors, BOM handling in external parsed entities
1955 <li>Code cleanup: fix build under VS 2008 (David Wimsey), remove useless
1956 mutex in xmlDict (Florent Guilian), Mingw32 compilation fix (Carlo
1957 Bramini), Win and MacOS EOL cleanups (Florent Guiliani), iconv need
1958 a const detection (Roumen Petrov), simplify xmlSetProp (Julien Charbon),
1959 cross compilation fixes for Mingw (Roumen Petrov), SCO Openserver build
1960 fix (Florent Guiliani), iconv uses const on Win32 (Rob Richards),
1961 duplicate code removal (Ashwin), missing malloc test and error reports
1962 (Ashwin), VMS makefile fix (Tycho Hilhorst)</li>
1963 <li>improvements: better plug of schematron in the normal error handling
1964 (Tobias Minich)</li>
1967 <h3>2.6.31: Jan 11 2008</h3>
1969 <li>Security fix: missing of checks in UTF-8 parsing</li>
1970 <li>Bug fixes: regexp bug, dump attribute from XHTML document, fix
1971 xmlFree(NULL) to not crash in debug mode, Schematron parsing crash
1972 (Rob Richards), global lock free on Windows (Marc-Antoine Ruel),
1973 XSD crash due to double free (Rob Richards), indentation fix in
1974 xmlTextWriterFullEndElement (Felipe Pena), error in attribute type
1975 parsing if attribute redeclared, avoid crash in hash list scanner if
1976 deleting elements, column counter bug fix (Christian Schmidt),
1977 HTML embed element saving fix (Stefan Behnel), avoid -L/usr/lib
1978 output from xml2-config (Fred Crozat), avoid an xmllint crash
1979 (Stefan Kost), don't stop HTML parsing on out of range chars.
1981 <li>Code cleanup: fix open() call third argument, regexp cut'n paste
1982 copy error, unused variable in __xmlGlobalInitMutexLock (Hannes Eder),
1983 some make distcheck realted fixes (John Carr)</li>
1984 <li>Improvements: HTTP Header: includes port number (William Brack),
1985 testURI --debug option, </li>
1987 <h3>2.6.30: Aug 23 2007</h3>
1989 <li>Portability: Solaris crash on error handling, windows path fixes
1990 (Roland Schwarz and Rob Richards), mingw build (Roland Schwarz)</li>
1991 <li>Bugfixes: xmlXPathNodeSetSort problem (William Brack), leak when
1992 reusing a writer for a new document (Dodji Seketeli), Schemas
1993 xsi:nil handling patch (Frank Gross), relative URI build problem
1994 (Patrik Fimml), crash in xmlDocFormatDump, invalid char in comment
1995 detection bug, fix disparity with xmlSAXUserParseMemory, automata
1996 generation for complex regexp counts problems, Schemas IDC import
1997 problems (Frank Gross), xpath predicate evailation error handling
1998 (William Brack)</li>
2000 <h3>2.6.29: Jun 12 2007</h3>
2002 <li>Portability: patches from Andreas Stricke for WinCEi,
2003 fix compilation warnings (William Brack), avoid warnings on Apple OS/X
2004 (Wendy Doyle and Mark Rowe), Windows compilation and threading
2005 improvements (Rob Richards), compilation against old Python versions,
2006 new GNU tar changes (Ryan Hill)</li>
2007 <li>Documentation: xmlURIUnescapeString comment, </li>
2008 <li>Bugfixes: xmlBufferAdd problem (Richard Jones), 'make valgrind'
2009 flag fix (Richard Jones), regexp interpretation of \,
2010 htmlCreateDocParserCtxt (Jean-Daniel Dupas), configure.in
2011 typo (Bjorn Reese), entity content failure, xmlListAppend() fix
2012 (Georges-André Silber), XPath number serialization (William Brack),
2013 nanohttp gzipped stream fix (William Brack and Alex Cornejo),
2014 xmlCharEncFirstLine typo (Mark Rowe), uri bug (François Delyon),
2015 XPath string value of PI nodes (William Brack), XPath node set
2016 sorting bugs (William Brack), avoid outputting namespace decl
2017 dups in the writer (Rob Richards), xmlCtxtReset bug, UTF-8 encoding
2018 error handling, recustion on next in catalogs, fix a Relax-NG crash,
2019 workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes,
2020 invalid character in attribute detection bug, big comments before
2021 internal subset streaming bug, HTML parsing of attributes with : in
2022 the name, IDness of name in HTML (Dagfinn I. Mannsåker) </li>
2023 <li>Improvement: keep URI query parts in raw form (Richard Jones),
2024 embed tag support in HTML (Michael Day) </li>
2027 <h3>2.6.28: Apr 17 2007</h3>
2029 <li>Documentation: comment fixes (Markus Keim), xpath comments fixes too
2030 (James Dennett)</li>
2031 <li>Bug fixes: XPath bug (William Brack), HTML parser autoclose stack usage
2032 (Usamah Malik), various regexp bug fixes (DV and William), path conversion
2033 on Windows (Igor Zlatkovic), htmlCtxtReset fix (Michael Day), XPath
2034 principal node of axis bug, HTML serialization of some codepoint
2035 (Steven Rainwater), user data propagation in XInclude (Michael Day),
2036 standalone and XML decl detection (Michael Day), Python id ouptut
2037 for some id, fix the big python string memory leak, URI parsing fixes
2038 (Stéphane Bidoul and William), long comments parsing bug (William),
2039 concurrent threads initialization (Ted Phelps), invalid char
2040 in text XInclude (William), XPath memory leak (William), tab in
2041 python problems (Andreas Hanke), XPath node comparison error
2042 (Oleg Paraschenko), cleanup patch for reader (Julien Reichel),
2043 XML Schemas attribute group (William), HTML parsing problem (William),
2044 fix char 0x2d in regexps (William), regexp quantifier range with
2045 min occurs of 0 (William), HTML script/style parsing (Mike Day)</li>
2046 <li>Improvement: make xmlTextReaderSetup() public</li>
2047 <li>Compilation and postability: fix a missing include problem (William),
2048 __ss_familly on AIX again (Björn Wiberg), compilation without zlib
2049 (Michael Day), catalog patch for Win32 (Christian Ehrlicher),
2050 Windows CE fixes (Andreas Stricke)</li>
2051 <li>Various CVS to SVN infrastructure changes</li>
2053 <h3>2.6.27: Oct 25 2006</h3>
2055 <li>Portability fixes: file names on windows (Roland Schwingel,
2056 Emelyanov Alexey), windows compile fixup (Rob Richards),
2057 AIX iconv() is apparently case sensitive</li>
2058 <li>improvements: Python XPath types mapping (Nic Ferrier), XPath optimization
2059 (Kasimier), add xmlXPathCompiledEvalToBoolean (Kasimier), Python node
2060 equality and comparison (Andreas Pakulat), xmlXPathCollectAndTest
2061 improvememt (Kasimier), expose if library was compiled with zlib
2062 support (Andrew Nosenko), cache for xmlSchemaIDCMatcher structs
2063 (Kasimier), xmlTextConcat should work with comments and PIs (Rob
2064 Richards), export htmlNewParserCtxt needed by Michael Day, refactoring
2065 of catalog entity loaders (Michael Day), add XPointer support to
2066 python bindings (Ross Reedstrom, Brian West and Stefan Anca),
2067 try to sort out most file path to URI conversions and xmlPathToUri,
2068 add --html --memory case to xmllint</li>
2069 <li>building fix: fix --with-minimum (Felipe Contreras), VMS fix,
2070 const'ification of HTML parser structures (Matthias Clasen),
2071 portability fix (Emelyanov Alexey), wget autodetection (Peter
2072 Breitenlohner), remove the build path recorded in the python
2073 shared module, separate library flags for shared and static builds
2074 (Mikhail Zabaluev), fix --with-minimum --with-sax1 builds, fix
2075 --with-minimum --with-schemas builds</li>
2076 <li>bug fix: xmlGetNodePath fix (Kasimier), xmlDOMWrapAdoptNode and
2077 attribute (Kasimier), crash when using the recover mode,
2078 xmlXPathEvalExpr problem (Kasimier), xmlXPathCompExprAdd bug (Kasimier),
2079 missing destry in xmlFreeRMutex (Andrew Nosenko), XML Schemas fixes
2080 (Kasimier), warning on entities processing, XHTML script and style
2081 serialization (Kasimier), python generator for long types, bug in
2082 xmlSchemaClearValidCtxt (Bertrand Fritsch), xmlSchemaXPathEvaluate
2083 allocation bug (Marton Illes), error message end of line (Rob Richards),
2084 fix attribute serialization in writer (Rob Richards), PHP4 DTD validation
2085 crasher, parser safety patch (Ben Darnell), _private context propagation
2086 when parsing entities (with Michael Day), fix entities behaviour when
2087 using SAX, URI to file path fix (Mikhail Zabaluev), disapearing validity
2088 context, arg error in SAX callback (Mike Hommey), fix mixed-content
2089 autodetect when using --noblanks, fix xmlIOParseDTD error handling,
2090 fix bug in xmlSplitQName on special Names, fix Relax-NG element content
2091 validation bug, fix xmlReconciliateNs bug, fix potential attribute
2092 XML parsing bug, fix line/column accounting in XML parser, chunking bug
2093 in the HTML parser on script, try to detect obviously buggy HTML
2094 meta encoding indications, bugs with encoding BOM and xmlSaveDoc,
2095 HTML entities in attributes parsing, HTML minimized attribute values,
2096 htmlReadDoc and htmlReadIO were broken, error handling bug in
2097 xmlXPathEvalExpression (Olaf Walkowiak), fix a problem in
2098 htmlCtxtUseOptions, xmlNewInputFromFile could leak (Marius Konitzer),
2099 bug on misformed SSD regexps (Christopher Boumenot)
2101 <li>documentation: warning about XML_PARSE_COMPACT (Kasimier Buchcik),
2102 fix xmlXPathCastToString documentation, improve man pages for
2103 xmllitn and xmlcatalog (Daniel Leidert), fixed comments of a few
2106 <h3>2.6.26: Jun 6 2006</h3>
2108 <li>portability fixes: Python detection (Joseph Sacco), compilation
2109 error(William Brack and Graham Bennett), LynxOS patch (Olli Savia)</li>
2110 <li>bug fixes: encoding buffer problem, mix of code and data in
2111 xmlIO.c(Kjartan Maraas), entities in XSD validation (Kasimier Buchcik),
2112 variousXSD validation fixes (Kasimier), memory leak in pattern (Rob
2113 Richards andKasimier), attribute with colon in name (Rob Richards), XPath
2114 leak inerror reporting (Aleksey Sanin), XInclude text include of
2116 <li>improvements: Xpath optimizations (Kasimier), XPath object
2117 cache(Kasimier)</li>
2120 <h3>2.6.25: Jun 6 2006:</h3>
2122 <p>Do not use or package 2.6.25</p>
2124 <h3>2.6.24: Apr 28 2006</h3>
2126 <li>Portability fixes: configure on Windows, testapi compile on windows
2127 (Kasimier Buchcik, venkat naidu), Borland C++ 6 compile (Eric Zurcher),
2128 HP-UX compiler workaround (Rick Jones), xml2-config bugfix, gcc-4.1
2129 cleanups, Python detection scheme (Joseph Sacco), UTF-8 file paths on
2130 Windows (Roland Schwingel).
2132 <li>Improvements: xmlDOMWrapReconcileNamespaces xmlDOMWrapCloneNode (Kasimier
2133 Buchcik), XML catalog debugging (Rick Jones), update to Unicode 4.01.</li>
2134 <li>Bug fixes: xmlParseChunk() problem in 2.6.23, xmlParseInNodeContext()
2135 on HTML docs, URI behaviour on Windows (Rob Richards), comment streaming
2136 bug, xmlParseComment (with William Brack), regexp bug fixes (DV &
2137 Youri Golovanov), xmlGetNodePath on text/CDATA (Kasimier),
2138 one Relax-NG interleave bug, xmllint --path and --valid,
2139 XSD bugfixes (Kasimier), remove debug
2140 left in Python bindings (Nic Ferrier), xmlCatalogAdd bug (Martin Cole),
2141 xmlSetProp fixes (Rob Richards), HTML IDness (Rob Richards), a large
2142 number of cleanups and small fixes based on Coverity reports, bug
2143 in character ranges, Unicode tables const (Aivars Kalvans), schemas
2144 fix (Stefan Kost), xmlRelaxNGParse error deallocation,
2145 xmlSchemaAddSchemaDoc error deallocation, error handling on unallowed
2146 code point, ixmllint --nonet to never reach the net (Gary Coady),
2147 line break in writer after end PI (Jason Viers). </li>
2148 <li>Documentation: man pages updates and cleanups (Daniel Leidert).</li>
2149 <li>New features: Relax NG structure error handlers.</li>
2152 <h3>2.6.23: Jan 5 2006</h3>
2154 <li>portability fixes: Windows (Rob Richards), getaddrinfo on Windows
2155 (Kolja Nowak, Rob Richards), icc warnings (Kjartan Maraas),
2156 --with-minimum compilation fixes (William Brack), error case handling fix
2157 on Solaris (Albert Chin), don't use 'list' as parameter name reported by
2158 Samuel Diaz Garcia, more old Unices portability fixes (Albert Chin),
2159 MinGW compilation (Mark Junker), HP-UX compiler warnings (Rick
2161 <li>code cleanup: xmlReportError (Adrian Mouat), remove xmlBufferClose
2162 (Geert Jansen), unreachable code (Oleksandr Kononenko), refactoring
2163 parsing code (Bjorn Reese)</li>
2164 <li>bug fixes: xmlBuildRelativeURI and empty path (William Brack),
2165 combinatory explosion and performances in regexp code, leak in
2166 xmlTextReaderReadString(), xmlStringLenDecodeEntities problem (Massimo
2167 Morara), Identity Constraints bugs and a segfault (Kasimier Buchcik),
2168 XPath pattern based evaluation bugs (DV & Kasimier),
2169 xmlSchemaContentModelDump() memory leak (Kasimier), potential leak in
2170 xmlSchemaCheckCSelectorXPath(), xmlTextWriterVSprintf() misuse of
2171 vsnprintf (William Brack), XHTML serialization fix (Rob Richards), CRLF
2172 split problem (William), issues with non-namespaced attributes in
2173 xmlAddChild() xmlAddNextSibling() and xmlAddPrevSibling() (Rob Richards),
2174 HTML parsing of script, Python must not output to stdout (Nic Ferrier),
2175 exclusive C14N namespace visibility (Aleksey Sanin), XSD dataype
2176 totalDigits bug (Kasimier Buchcik), error handling when writing to an
2177 xmlBuffer (Rob Richards), runtest schemas error not reported (Hisashi
2178 Fujinaka), signed/unsigned problem in date/time code (Albert Chin), fix
2179 XSI driven XSD validation (Kasimier), parsing of xs:decimal (Kasimier),
2180 fix DTD writer output (Rob Richards), leak in xmlTextReaderReadInnerXml
2181 (Gary Coady), regexp bug affecting schemas (Kasimier), configuration of
2182 runtime debugging (Kasimier), xmlNodeBufGetContent bug on entity refs
2183 (Oleksandr Kononenko), xmlRegExecPushString2 bug (Sreeni Nair),
2184 compilation and build fixes (Michael Day), removed dependancies on
2185 xmlSchemaValidError (Kasimier), bug with <xml:foo/>, more XPath
2186 pattern based evaluation fixes (Kasimier)</li>
2187 <li>improvements: XSD Schemas redefinitions/restrictions (Kasimier
2188 Buchcik), node copy checks and fix for attribute (Rob Richards), counted
2189 transition bug in regexps, ctxt->standalone = -2 to indicate no
2190 standalone attribute was found, add xmlSchemaSetParserStructuredErrors()
2191 (Kasimier Buchcik), add xmlTextReaderSchemaValidateCtxt() to API
2192 (Kasimier), handle gzipped HTTP resources (Gary Coady), add
2193 htmlDocDumpMemoryFormat. (Rob Richards),</li>
2194 <li>documentation: typo (Michael Day), libxml man page (Albert Chin), save
2195 function to XML buffer (Geert Jansen), small doc fix (Aron Stansvik),</li>
2198 <h3>2.6.22: Sep 12 2005</h3>
2200 <li>build fixes: compile without schematron (Stéphane Bidoul)</li>
2201 <li>bug fixes: xmlDebugDumpNode on namespace node (Oleg Paraschenko)i,
2202 CDATA push parser bug, xmlElemDump problem with XHTML1 doc,
2203 XML_FEATURE_xxx clash with expat headers renamed XML_WITH_xxx, fix some
2204 output formatting for meta element (Rob Richards), script and style
2205 XHTML1 serialization (David Madore), Attribute derivation fixups in XSD
2206 (Kasimier Buchcik), better IDC error reports (Kasimier Buchcik)</li>
2207 <li>improvements: add XML_SAVE_NO_EMPTY xmlSaveOption (Rob Richards), add
2208 XML_SAVE_NO_XHTML xmlSaveOption, XML Schemas improvements preparing for
2209 derive (Kasimier Buchcik).</li>
2210 <li>documentation: generation of gtk-doc like docs, integration with
2214 <h3>2.6.21: Sep 4 2005</h3>
2216 <li>build fixes: Cygwin portability fixes (Gerrit P. Haase), calling
2217 convention problems on Windows (Marcus Boerger), cleanups based on Linus'
2218 sparse tool, update of win32/configure.js (Rob Richards), remove warnings
2219 on Windows(Marcus Boerger), compilation without SAX1, detection of the
2220 Python binary, use $GCC inestad of $CC = 'gcc' (Andrew W. Nosenko),
2221 compilation/link with threads and old gcc, compile problem by C370 on
2223 <li>bug fixes: http_proxy environments (Peter Breitenlohner), HTML UTF-8
2224 bug (Jiri Netolicky), XPath NaN compare bug (William Brack),
2225 htmlParseScript potential bug, Schemas regexp handling of spaces, Base64
2226 Schemas comparisons NIST passes, automata build error xsd:all,
2227 xmlGetNodePath for namespaced attributes (Alexander Pohoyda), xmlSchemas
2228 foreign namespaces handling, XML Schemas facet comparison (Kupriyanov
2229 Anatolij), xmlSchemaPSimpleTypeErr error report (Kasimier Buchcik), xml:
2230 namespace ahndling in Schemas (Kasimier), empty model group in Schemas
2231 (Kasimier), wilcard in Schemas (Kasimier), URI composition (William),
2232 xs:anyType in Schemas (Kasimier), Python resolver emmitting error
2233 messages directly, Python xmlAttr.parent (Jakub Piotr Clapa), trying to
2234 fix the file path/URI conversion, xmlTextReaderGetAttribute fix (Rob
2235 Richards), xmlSchemaFreeAnnot memleak (Kasimier), HTML UTF-8
2236 serialization, streaming XPath, Schemas determinism detection problem,
2237 XInclude bug, Schemas context type (Dean Hill), validation fix (Derek
2238 Poon), xmlTextReaderGetAttribute[Ns] namespaces (Rob Richards), Schemas
2239 type fix (Kuba Nowakowski), UTF-8 parser bug, error in encoding handling,
2240 xmlGetLineNo fixes, bug on entities handling, entity name extraction in
2241 error handling with XInclude, text nodes in HTML body tags (Gary Coady),
2242 xml:id and IDness at the treee level fixes, XPath streaming patterns
2244 <li>improvements: structured interfaces for schemas and RNG error reports
2245 (Marcus Boerger), optimization of the char data inner loop parsing
2246 (thanks to Behdad Esfahbod for the idea), schematron validation though
2247 not finished yet, xmlSaveOption to omit XML declaration, keyref match
2248 error reports (Kasimier), formal expression handling code not plugged
2249 yet, more lax mode for the HTML parser, parser XML_PARSE_COMPACT option
2250 for text nodes allocation.</li>
2251 <li>documentation: xmllint man page had --nonet duplicated</li>
2254 <h3>2.6.20: Jul 10 2005</h3>
2256 <li>build fixes: Windows build (Rob Richards), Mingw compilation (Igor
2257 Zlatkovic), Windows Makefile (Igor), gcc warnings (Kasimier and
2258 andriy@google.com), use gcc weak references to pthread to avoid the
2259 pthread dependancy on Linux, compilation problem (Steve Nairn), compiling
2260 of subset (Morten Welinder), IPv6/ss_family compilation (William Brack),
2261 compilation when disabling parts of the library, standalone test
2263 <li>bug fixes: bug in lang(), memory cleanup on errors (William Brack),
2264 HTTP query strings (Aron Stansvik), memory leak in DTD (William), integer
2265 overflow in XPath (William), nanoftp buffer size, pattern "." apth fixup
2266 (Kasimier), leak in tree reported by Malcolm Rowe, replaceNode patch
2267 (Brent Hendricks), CDATA with NULL content (Mark Vakoc), xml:base fixup
2268 on XInclude (William), pattern fixes (William), attribute bug in
2269 exclusive c14n (Aleksey Sanin), xml:space and xml:lang with SAX2 (Rob
2270 Richards), namespace trouble in complex parsing (Malcolm Rowe), XSD type
2271 QNames fixes (Kasimier), XPath streaming fixups (William), RelaxNG bug
2272 (Rob Richards), Schemas for Schemas fixes (Kasimier), removal of ID (Rob
2273 Richards), a small RelaxNG leak, HTML parsing in push mode bug (James
2274 Bursa), failure to detect UTF-8 parsing bugs in CDATA sections,
2275 areBlanks() heuristic failure, duplicate attributes in DTD bug
2277 <li>improvements: lot of work on Schemas by Kasimier Buchcik both on
2278 conformance and streaming, Schemas validation messages (Kasimier Buchcik,
2279 Matthew Burgess), namespace removal at the python level (Brent
2280 Hendricks), Update to new Schemas regression tests from W3C/Nist
2281 (Kasimier), xmlSchemaValidateFile() (Kasimier), implementation of
2282 xmlTextReaderReadInnerXml and xmlTextReaderReadOuterXml (James Wert),
2283 standalone test framework and programs, new DOM import APIs
2284 xmlDOMWrapReconcileNamespaces() xmlDOMWrapAdoptNode() and
2285 xmlDOMWrapRemoveNode(), extension of xmllint capabilities for SAX and
2286 Schemas regression tests, xmlStopParser() available in pull mode too,
2287 ienhancement to xmllint --shell namespaces support, Windows port of the
2288 standalone testing tools (Kasimier and William),
2289 xmlSchemaValidateStream() xmlSchemaSAXPlug() and xmlSchemaSAXUnplug() SAX
2290 Schemas APIs, Schemas xmlReader support.</li>
2293 <h3>2.6.19: Apr 02 2005</h3>
2295 <li>build fixes: drop .la from RPMs, --with-minimum build fix (William
2296 Brack), use XML_SOCKLEN_T instead of SOCKLEN_T because it breaks with AIX
2297 5.3 compiler, fixed elfgcchack.h generation and PLT reduction code on
2299 <li>bug fixes: schemas type decimal fixups (William Brack), xmmlint return
2300 code (Gerry Murphy), small schemas fixes (Matthew Burgess and GUY
2301 Fabrice), workaround "DAV:" namespace brokeness in c14n (Aleksey Sanin),
2302 segfault in Schemas (Kasimier Buchcik), Schemas attribute validation
2303 (Kasimier), Prop related functions and xmlNewNodeEatName (Rob Richards),
2304 HTML serialization of name attribute on a elements, Python error handlers
2305 leaks and improvement (Brent Hendricks), uninitialized variable in
2306 encoding code, Relax-NG validation bug, potential crash if
2307 gnorableWhitespace is NULL, xmlSAXParseDoc and xmlParseDoc signatures,
2308 switched back to assuming UTF-8 in case no encoding is given at
2309 serialization time</li>
2310 <li>improvements: lot of work on Schemas by Kasimier Buchcik on facets
2311 checking and also mixed handling.</li>
2315 <h3>2.6.18: Mar 13 2005</h3>
2317 <li>build fixes: warnings (Peter Breitenlohner), testapi.c generation,
2318 Bakefile support (Francesco Montorsi), Windows compilation (Joel Reed),
2319 some gcc4 fixes, HP-UX portability fixes (Rick Jones).</li>
2320 <li>bug fixes: xmlSchemaElementDump namespace (Kasimier Buchcik), push and
2321 xmlreader stopping on non-fatal errors, thread support for dictionnaries
2322 reference counting (Gary Coady), internal subset and push problem, URL
2323 saved in xmlCopyDoc, various schemas bug fixes (Kasimier), Python paths
2324 fixup (Stephane Bidoul), xmlGetNodePath and namespaces, xmlSetNsProp fix
2325 (Mike Hommey), warning should not count as error (William Brack),
2326 xmlCreatePushParser empty chunk, XInclude parser flags (William), cleanup
2327 FTP and HTTP code to reuse the uri parsing and IPv6 (William),
2328 xmlTextWriterStartAttributeNS fix (Rob Richards), XMLLINT_INDENT being
2329 empty (William), xmlWriter bugs (Rob Richards), multithreading on Windows
2330 (Rich Salz), xmlSearchNsByHref fix (Kasimier), Python binding leak (Brent
2331 Hendricks), aliasing bug exposed by gcc4 on s390, xmlTextReaderNext bug
2332 (Rob Richards), Schemas decimal type fixes (William Brack),
2333 xmlByteConsumed static buffer (Ben Maurer).</li>
2334 <li>improvement: speedup parsing comments and DTDs, dictionary support for
2335 hash tables, Schemas Identity constraints (Kasimier), streaming XPath
2336 subset, xmlTextReaderReadString added (Bjorn Reese), Schemas canonical
2337 values handling (Kasimier), add xmlTextReaderByteConsumed (Aron
2339 <li>Documentation: Wiki support (Joel Reed)</li>
2342 <h3>2.6.17: Jan 16 2005</h3>
2344 <li>build fixes: Windows, warnings removal (William Brack),
2345 maintainer-clean dependency(William), build in a different directory
2346 (William), fixing --with-minimum configure build (William), BeOS build
2347 (Marcin Konicki), Python-2.4 detection (William), compilation on AIX (Dan
2349 <li>bug fixes: xmlTextReaderHasAttributes (Rob Richards), xmlCtxtReadFile()
2350 to use the catalog(s), loop on output (William Brack), XPath memory leak,
2351 ID deallocation problem (Steve Shepard), debugDumpNode crash (William),
2352 warning not using error callback (William), xmlStopParser bug (William),
2353 UTF-16 with BOM on DTDs (William), namespace bug on empty elements in
2354 push mode (Rob Richards), line and col computations fixups (Aleksey
2355 Sanin), xmlURIEscape fix (William), xmlXPathErr on bad range (William),
2356 patterns with too many steps, bug in RNG choice optimization, line number
2357 sometimes missing.</li>
2358 <li>improvements: XSD Schemas (Kasimier Buchcik), python generator
2359 (William), xmlUTF8Strpos speedup (William), unicode Python strings
2360 (William), XSD error reports (Kasimier Buchcik), Python __str__ call
2362 <li>new APIs: added xmlDictExists(), GetLineNumber and GetColumnNumber for
2363 the xmlReader (Aleksey Sanin), Dynamic Shared Libraries APIs (mostly Joel
2364 Reed), error extraction API from regexps, new XMLSave option for format
2366 <li>documentation: site improvement (John Fleck), FAQ entries
2370 <h3>2.6.16: Nov 10 2004</h3>
2372 <li>general hardening and bug fixing crossing all the API based on new
2373 automated regression testing</li>
2374 <li>build fix: IPv6 build and test on AIX (Dodji Seketeli)</li>
2375 <li>bug fixes: problem with XML::Libxml reported by Petr Pajas, encoding
2376 conversion functions return values, UTF-8 bug affecting XPath reported by
2377 Markus Bertheau, catalog problem with NULL entries (William Brack)</li>
2378 <li>documentation: fix to xmllint man page, some API function descritpion
2380 <li>improvements: DTD validation APIs provided at the Python level (Brent
2384 <h3>2.6.15: Oct 27 2004</h3>
2386 <li>security fixes on the nanoftp and nanohttp modules</li>
2387 <li>build fixes: xmllint detection bug in configure, building outside the
2388 source tree (Thomas Fitzsimmons)</li>
2389 <li>bug fixes: HTML parser on broken ASCII chars in names (William), Python
2390 paths (Malcolm Tredinnick), xmlHasNsProp and default namespace (William),
2391 saving to python file objects (Malcolm Tredinnick), DTD lookup fix
2392 (Malcolm), save back <group> in catalogs (William), tree build
2393 fixes (DV and Rob Richards), Schemas memory bug, structured error handler
2394 on Python 64bits, thread local memory deallocation, memory leak reported
2395 by Volker Roth, xmlValidateDtd in the presence of an internal subset,
2396 entities and _private problem (William), xmlBuildRelativeURI error
2398 <li>improvements: better XInclude error reports (William), tree debugging
2399 module and tests, convenience functions at the Reader API (Graham
2400 Bennett), add support for PI in the HTML parser.</li>
2403 <h3>2.6.14: Sep 29 2004</h3>
2405 <li>build fixes: configure paths for xmllint and xsltproc, compilation
2406 without HTML parser, compilation warning cleanups (William Brack &
2407 Malcolm Tredinnick), VMS makefile update (Craig Berry),</li>
2408 <li>bug fixes: xmlGetUTF8Char (William Brack), QName properties (Kasimier
2409 Buchcik), XInclude testing, Notation serialization, UTF8ToISO8859x
2410 transcoding (Mark Itzcovitz), lots of XML Schemas cleanup and fixes
2411 (Kasimier), ChangeLog cleanup (Stepan Kasal), memory fixes (Mark Vakoc),
2412 handling of failed realloc(), out of bound array adressing in Schemas
2413 date handling, Python space/tabs cleanups (Malcolm Tredinnick), NMTOKENS
2414 E20 validation fix (Malcolm),</li>
2415 <li>improvements: added W3C XML Schemas testsuite (Kasimier Buchcik), add
2416 xmlSchemaValidateOneElement (Kasimier), Python exception hierearchy
2417 (Malcolm Tredinnick), Python libxml2 driver improvement (Malcolm
2418 Tredinnick), Schemas support for xsi:schemaLocation,
2419 xsi:noNamespaceSchemaLocation, xsi:type (Kasimier Buchcik)</li>
2422 <h3>2.6.13: Aug 31 2004</h3>
2424 <li>build fixes: Windows and zlib (Igor Zlatkovic), -O flag with gcc,
2425 Solaris compiler warning, fixing RPM BuildRequires,</li>
2426 <li>fixes: DTD loading on Windows (Igor), Schemas error reports APIs
2427 (Kasimier Buchcik), Schemas validation crash, xmlCheckUTF8 (William Brack
2428 and Julius Mittenzwei), Schemas facet check (Kasimier), default namespace
2429 problem (William), Schemas hexbinary empty values, encoding error could
2430 genrate a serialization loop.</li>
2431 <li>Improvements: Schemas validity improvements (Kasimier), added --path
2432 and --load-trace options to xmllint</li>
2433 <li>documentation: tutorial update (John Fleck)</li>
2436 <h3>2.6.12: Aug 22 2004</h3>
2438 <li>build fixes: fix --with-minimum, elfgcchack.h fixes (Peter
2439 Breitenlohner), perl path lookup (William), diff on Solaris (Albert
2440 Chin), some 64bits cleanups.</li>
2441 <li>Python: avoid a warning with 2.3 (William Brack), tab and space mixes
2442 (William), wrapper generator fixes (William), Cygwin support (Gerrit P.
2443 Haase), node wrapper fix (Marc-Antoine Parent), XML Schemas support
2445 <li>Schemas: a lot of bug fixes and improvements from Kasimier Buchcik</li>
2446 <li>fixes: RVT fixes (William), XPath context resets bug (William), memory
2447 debug (Steve Hay), catalog white space handling (Peter Breitenlohner),
2448 xmlReader state after attribute reading (William), structured error
2449 handler (William), XInclude generated xml:base fixup (William), Windows
2450 memory reallocation problem (Steve Hay), Out of Memory conditions
2451 handling (William and Olivier Andrieu), htmlNewDoc() charset bug,
2452 htmlReadMemory init (William), a posteriori validation DTD base
2453 (William), notations serialization missing, xmlGetNodePath (Dodji),
2454 xmlCheckUTF8 (Diego Tartara), missing line numbers on entity
2456 <li>improvements: DocBook catalog build scrip (William), xmlcatalog tool
2457 (Albert Chin), xmllint --c14n option, no_proxy environment (Mike Hommey),
2458 xmlParseInNodeContext() addition, extend xmllint --shell, allow XInclude
2459 to not generate start/end nodes, extend xmllint --version to include CVS
2461 <li>documentation: web pages fixes, validity API docs fixes (William)
2462 schemas API fix (Eric Haszlakiewicz), xmllint man page (John Fleck)</li>
2465 <h3>2.6.11: July 5 2004</h3>
2467 <li>Schemas: a lot of changes and improvements by Kasimier Buchcik for
2468 attributes, namespaces and simple types.</li>
2469 <li>build fixes: --with-minimum (William Brack), some gcc cleanup
2470 (William), --with-thread-alloc (William)</li>
2471 <li>portability: Windows binary package change (Igor Zlatkovic), Catalog
2472 path on Windows</li>
2473 <li>documentation: update to the tutorial (John Fleck), xmllint return code
2474 (John Fleck), man pages (Ville Skytta),</li>
2475 <li>bug fixes: C14N bug serializing namespaces (Aleksey Sanin), testSAX
2476 properly initialize the library (William), empty node set in XPath
2477 (William), xmlSchemas errors (William), invalid charref problem pointed
2478 by Morus Walter, XInclude xml:base generation (William), Relax-NG bug
2479 with div processing (William), XPointer and xml:base problem(William),
2480 Reader and entities, xmllint return code for schemas (William), reader
2481 streaming problem (Steve Ball), DTD serialization problem (William),
2482 libxml.m4 fixes (Mike Hommey), do not provide destructors as methods on
2483 Python classes, xmlReader buffer bug, Python bindings memory interfaces
2484 improvement (with Stéphane Bidoul), Fixed the push parser to be back to
2485 synchronous behaviour.</li>
2486 <li>improvement: custom per-thread I/O enhancement (Rob Richards), register
2487 namespace in debug shell (Stefano Debenedetti), Python based regression
2488 test for non-Unix users (William), dynamically increase the number of
2489 XPath extension functions in Python and fix a memory leak (Marc-Antoine
2490 Parent and William)</li>
2491 <li>performance: hack done with Arjan van de Ven to reduce ELF footprint
2492 and generated code on Linux, plus use gcc runtime profiling to optimize
2493 the code generated in the RPM packages.</li>
2496 <h3>2.6.10: May 17 2004</h3>
2498 <li>Web page generated for ChangeLog</li>
2499 <li>build fixes: --without-html problems, make check without make all</li>
2500 <li>portability: problem with xpath.c on Windows (MSC and Borland), memcmp
2501 vs. strncmp on Solaris, XPath tests on Windows (Mark Vakoc), C++ do not
2502 use "list" as parameter name, make tests work with Python 1.5 (Ed
2504 <li>improvements: made xmlTextReaderMode public, small buffers resizing
2505 (Morten Welinder), add --maxmem option to xmllint, add
2506 xmlPopInputCallback() for Matt Sergeant, refactoring of serialization
2507 escaping, added escaping customization</li>
2508 <li>bugfixes: xsd:extension (Taihei Goi), assorted regexp bugs (William
2509 Brack), xmlReader end of stream problem, node deregistration with reader,
2510 URI escaping and filemanes, XHTML1 formatting (Nick Wellnhofer), regexp
2511 transition reduction (William), various XSD Schemas fixes (Kasimier
2512 Buchcik), XInclude fallback problem (William), weird problems with DTD
2513 (William), structured error handler callback context (William), reverse
2514 xmlEncodeSpecialChars() behaviour back to escaping '"'</li>
2517 <h3>2.6.9: Apr 18 2004</h3>
2519 <li>implement xml:id Working Draft, relaxed XPath id() checking</li>
2520 <li>bugfixes: xmlCtxtReset (Brent Hendricks), line number and CDATA (Dave
2521 Beckett), Relax-NG compilation (William Brack), Regexp patches (with
2522 William), xmlUriEscape (Mark Vakoc), a Relax-NG notAllowed problem (with
2523 William), Relax-NG name classes compares (William), XInclude duplicate
2524 fallback (William), external DTD encoding detection (William), a DTD
2525 validation bug (William), xmlReader Close() fix, recusive extention
2527 <li>improvements: use xmlRead* APIs in test tools (Mark Vakoc), indenting
2528 save optimization, better handle IIS broken HTTP redirect behaviour (Ian
2529 Hummel), HTML parser frameset (James Bursa), libxml2-python RPM
2530 dependancy, XML Schemas union support (Kasimier Buchcik), warning removal
2531 clanup (William), keep ChangeLog compressed when installing from RPMs</li>
2532 <li>documentation: examples and xmlDocDumpMemory docs (John Fleck), new
2533 example (load, xpath, modify, save), xmlCatalogDump() comments,</li>
2534 <li>Windows: Borland C++ builder (Eric Zurcher), work around Microsoft
2535 compiler NaN handling bug (Mark Vakoc)</li>
2538 <h3>2.6.8: Mar 23 2004</h3>
2540 <li>First step of the cleanup of the serialization code and APIs</li>
2541 <li>XML Schemas: mixed content (Adam Dickmeiss), QName handling fixes (Adam
2542 Dickmeiss), anyURI for "" (John Belmonte)</li>
2543 <li>Python: Canonicalization C14N support added (Anthony Carrico)</li>
2544 <li>xmlDocCopyNode() extension (William)</li>
2545 <li>Relax-NG: fix when processing XInclude results (William), external
2546 reference in interleave (William), missing error on <choice>
2547 failure (William), memory leak in schemas datatype facets.</li>
2548 <li>xmlWriter: patch for better DTD support (Alfred Mickautsch)</li>
2549 <li>bug fixes: xmlXPathLangFunction memory leak (Mike Hommey and William
2550 Brack), no ID errors if using HTML_PARSE_NOERROR, xmlcatalog fallbacks to
2551 URI on SYSTEM lookup failure, XInclude parse flags inheritance (William),
2552 XInclude and XPointer fixes for entities (William), XML parser bug
2553 reported by Holger Rauch, nanohttp fd leak (William), regexps char
2554 groups '-' handling (William), dictionary reference counting problems,
2555 do not close stderr.</li>
2556 <li>performance patches from Petr Pajas</li>
2557 <li>Documentation fixes: XML_CATALOG_FILES in man pages (Mike Hommey)</li>
2558 <li>compilation and portability fixes: --without-valid, catalog cleanups
2559 (Peter Breitenlohner), MingW patch (Roland Schwingel), cross-compilation
2560 to Windows (Christophe de Vienne), --with-html-dir fixup (Julio Merino
2561 Vidal), Windows build (Eric Zurcher)</li>
2564 <h3>2.6.7: Feb 23 2004</h3>
2566 <li>documentation: tutorial updates (John Fleck), benchmark results</li>
2567 <li>xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)</li>
2568 <li>XPath optimization (Petr Pajas)</li>
2569 <li>DTD ID handling optimization</li>
2570 <li>bugfixes: xpath number with > 19 fractional (William Brack), push
2571 mode with unescaped '>' characters, fix xmllint --stream --timing, fix
2572 xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent
2573 handling NULL, trying to fix Relax-NG/Perl interface.</li>
2574 <li>python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)</li>
2575 <li>Added relaxng option to xmllint --shell</li>
2578 <h3>2.6.6: Feb 12 2004</h3>
2580 <li>nanohttp and nanoftp: buffer overflow error on URI parsing (Igor and
2581 William) reported by Yuuichi Teranishi</li>
2582 <li>bugfixes: make test and path issues, xmlWriter attribute serialization
2583 (William Brack), xmlWriter indentation (William), schemas validation
2584 (Eric Haszlakiewicz), XInclude dictionnaries issues (William and Oleg
2585 Paraschenko), XInclude empty fallback (William), HTML warnings (William),
2586 XPointer in XInclude (William), Python namespace serialization,
2587 isolat1ToUTF8 bound error (Alfred Mickautsch), output of parameter
2588 entities in internal subset (William), internal subset bug in push mode,
2589 <xs:all> fix (Alexey Sarytchev)</li>
2590 <li>Build: fix for automake-1.8 (Alexander Winston), warnings removal
2591 (Philip Ludlam), SOCKLEN_T detection fixes (Daniel Richard), fix
2592 --with-minimum configuration.</li>
2593 <li>XInclude: allow the 2001 namespace without warning.</li>
2594 <li>Documentation: missing example/index.html (John Fleck), version
2595 dependancies (John Fleck)</li>
2596 <li>reader API: structured error reporting (Steve Ball)</li>
2597 <li>Windows compilation: mingw, msys (Mikhail Grushinskiy), function
2598 prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_
2600 <li>Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in
2604 <h3>2.6.5: Jan 25 2004</h3>
2606 <li>Bugfixes: dictionnaries for schemas (William Brack), regexp segfault
2607 (William), xs:all problem (William), a number of XPointer bugfixes
2608 (William), xmllint error go to stderr, DTD validation problem with
2609 namespace, memory leak (William), SAX1 cleanup and minimal options fixes
2610 (Mark Vadoc), parser context reset on error (Shaun McCance), XPath union
2611 evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin),
2612 XML Schemas double free (Steve Ball), XInclude with no href, argument
2613 callbacks order for XPath callbacks (Frederic Peters)</li>
2614 <li>Documentation: python scripts (William Brack), xslt stylesheets (John
2615 Fleck), doc (Sven Zimmerman), I/O example.</li>
2616 <li>Python bindings: fixes (William), enum support (Stéphane Bidoul),
2617 structured error reporting (Stéphane Bidoul)</li>
2618 <li>XInclude: various fixes for conformance, problem related to dictionary
2619 references (William & me), recursion (William)</li>
2620 <li>xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred
2622 <li>xmlSchemas: normalizedString datatype (John Belmonte)</li>
2623 <li>code cleanup for strings functions (William)</li>
2624 <li>Windows: compiler patches (Mark Vakoc)</li>
2625 <li>Parser optimizations, a few new XPath and dictionary APIs for future
2626 XSLT optimizations.</li>
2629 <h3>2.6.4: Dec 24 2003</h3>
2631 <li>Windows build fixes (Igor Zlatkovic)</li>
2632 <li>Some serious XInclude problems reported by Oleg Paraschenko and</li>
2633 <li>Unix and Makefile packaging fixes (me, William Brack,</li>
2634 <li>Documentation improvements (John Fleck, William Brack), example fix
2635 (Lucas Brasilino)</li>
2636 <li>bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of
2637 NULL strings (William Brack) , API building reader or parser from
2638 filedescriptor should not close it, changed XPath sorting to be stable
2639 again (William Brack), xmlGetNodePath() generating '(null)' (William
2640 Brack), DTD validation and namespace bug (William Brack), XML Schemas
2641 double inclusion behaviour</li>
2644 <h3>2.6.3: Dec 10 2003</h3>
2646 <li>documentation updates and cleanup (DV, William Brack, John Fleck)</li>
2647 <li>added a repository of examples, examples from Aleksey Sanin, Dodji
2648 Seketeli, Alfred Mickautsch</li>
2649 <li>Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw
2650 (Kenneth Haley)</li>
2651 <li>Unicode range checking (William Brack)</li>
2652 <li>code cleanup (William Brack)</li>
2653 <li>Python bindings: doc (John Fleck), bug fixes</li>
2654 <li>UTF-16 cleanup and BOM issues (William Brack)</li>
2655 <li>bug fixes: ID and xmlReader validation, XPath (William Brack),
2656 xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser
2657 (James Bursa), attribute defaulting and validation, some serialization
2658 cleanups, XML_GET_LINE macro, memory debug when using threads (William
2659 Brack), serialization of attributes and entities content, xmlWriter
2660 (Daniel Schulman)</li>
2661 <li>XInclude bugfix, new APIs and update to the last version including the
2662 namespace change.</li>
2663 <li>XML Schemas improvements: include (Robert Stepanek), import and
2664 namespace handling, fixed the regression tests troubles, added examples
2665 based on Eric van der Vlist book, regexp fixes</li>
2666 <li>preliminary pattern support for streaming (needed for schemas
2667 constraints), added xmlTextReaderPreservePattern() to collect subdocument
2668 when streaming.</li>
2669 <li>various fixes in the structured error handling</li>
2672 <h3>2.6.2: Nov 4 2003</h3>
2674 <li>XPath context unregistration fixes</li>
2675 <li>text node coalescing fixes (Mark Lilback)</li>
2676 <li>API to screate a W3C Schemas from an existing document (Steve Ball)</li>
2677 <li>BeOS patches (Marcin 'Shard' Konicki)</li>
2678 <li>xmlStrVPrintf function added (Aleksey Sanin)</li>
2679 <li>compilation fixes (Mark Vakoc)</li>
2680 <li>stdin parsing fix (William Brack)</li>
2681 <li>a posteriori DTD validation fixes</li>
2682 <li>xmlReader bug fixes: Walker fixes, python bindings</li>
2683 <li>fixed xmlStopParser() to really stop the parser and errors</li>
2684 <li>always generate line numbers when using the new xmlReadxxx
2686 <li>added XInclude support to the xmlReader interface</li>
2687 <li>implemented XML_PARSE_NONET parser option</li>
2688 <li>DocBook XSLT processing bug fixed</li>
2689 <li>HTML serialization for <p> elements (William Brack and me)</li>
2690 <li>XPointer failure in XInclude are now handled as resource errors</li>
2691 <li>fixed xmllint --html to use the HTML serializer on output (added
2692 --xmlout to implement the previous behaviour of saving it using the XML
2696 <h3>2.6.1: Oct 28 2003</h3>
2698 <li>Mostly bugfixes after the big 2.6.0 changes</li>
2699 <li>Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup
2700 (William Brack)</li>
2701 <li>Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor
2703 <li>xmlWriter bugfix (Alfred Mickautsch)</li>
2704 <li>chvalid.[ch]: couple of fixes from Stephane Bidoul</li>
2705 <li>context reset: error state reset, push parser reset (Graham
2707 <li>context reuse: generate errors if file is not readable</li>
2708 <li>defaulted attributes for element coming from internal entities
2709 (Stephane Bidoul)</li>
2710 <li>Python: tab and spaces mix (William Brack)</li>
2711 <li>Error handler could crash in DTD validation in 2.6.0</li>
2712 <li>xmlReader: do not use the document or element _private field</li>
2713 <li>testSAX.c: avoid a problem with some PIs (Massimo Morara)</li>
2714 <li>general bug fixes: mandatory encoding in text decl, serializing
2715 Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik),
2716 XPath errors not reported, slow HTML parsing of large documents.</li>
2719 <h3>2.6.0: Oct 20 2003</h3>
2721 <li>Major revision release: should be API and ABI compatible but got a lot
2723 <li>Increased the library modularity, far more options can be stripped out,
2724 a --with-minimum configuration will weight around 160KBytes</li>
2725 <li>Use per parser and per document dictionary, allocate names and small
2726 text nodes from the dictionary</li>
2727 <li>Switch to a SAX2 like parser rewrote most of the XML parser core,
2728 provides namespace resolution and defaulted attributes, minimize memory
2729 allocations and copies, namespace checking and specific error handling,
2730 immutable buffers, make predefined entities static structures, etc...</li>
2731 <li>rewrote all the error handling in the library, all errors can be
2732 intercepted at a structured level, with precise information
2734 <li>New simpler and more generic XML and HTML parser APIs, allowing to
2735 easilly modify the parsing options and reuse parser context for multiple
2736 consecutive documents.</li>
2737 <li>Similar new APIs for the xmlReader, for options and reuse, provided new
2738 functions to access content as const strings, use them for Python
2740 <li>a lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin),
2741 Walker i.e. reader on a document tree based on Alfred Mickautsch code,
2742 make room in nodes for line numbers, reference counting and future PSVI
2743 extensions, generation of character ranges to be checked with faster
2744 algorithm (William), xmlParserMaxDepth (Crutcher Dunnavant), buffer
2746 <li>New xmlWriter API provided by Alfred Mickautsch</li>
2747 <li>Schemas: base64 support by Anthony Carrico</li>
2748 <li>Parser<->HTTP integration fix, proper processing of the Mime-Type
2749 and charset information if available.</li>
2750 <li>Relax-NG: bug fixes including the one reported by Martijn Faassen and
2751 zeroOrMore, better error reporting.</li>
2752 <li>Python bindings (Stéphane Bidoul), never use stdout for errors
2754 <li>Portability: all the headers have macros for export and calling
2755 convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry),
2756 Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher, Igor),
2757 Mingw (Igor), typos (Mark Vakoc), beta version (Stephane Bidoul),
2758 warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin
2759 'Shard' Konicki)</li>
2760 <li>Documentation fixes and README (William Brack), search fix (William),
2761 tutorial updates (John Fleck), namespace docs (Stefan Kost)</li>
2762 <li>Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized
2763 mutexes, HTML doctype lowercase, SAX/IO (William), compression detection
2764 and restore (William), attribute declaration in DTDs (William), namespace
2765 on attribute in HTML output (William), input filename (Rob Richards),
2766 namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks
2767 (Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter
2768 Derr), high codepoint charref like &#x10FFFF;, buffer access in push
2769 mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug
2770 (William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP
2771 error handling.</li>
2772 <li>xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat
2773 testing, --nodict for building without tree dictionary, --nocdata to
2774 replace CDATA by text, --nsclean to remove surperfluous namespace
2776 <li>added xml2-config --libtool-libs option from Kevin P. Fleming</li>
2777 <li>a lot of profiling and tuning of the code, speedup patch for
2778 xmlSearchNs() by Luca Padovani. The xmlReader should do far less
2779 allocation and it speed should get closer to SAX. Chris Anderson worked
2780 on speeding and cleaning up repetitive checking code.</li>
2781 <li>cleanup of "make tests"</li>
2782 <li>libxml-2.0-uninstalled.pc from Malcolm Tredinnick</li>
2783 <li>deactivated the broken docBook SGML parser code and plugged the XML
2784 parser instead.</li>
2787 <h3>2.5.11: Sep 9 2003</h3>
2789 <p>A bugfix only release:</p>
2791 <li>risk of crash in Relax-NG</li>
2792 <li>risk of crash when using multithreaded programs</li>
2795 <h3>2.5.10: Aug 15 2003</h3>
2797 <p>A bugfixes only release</p>
2799 <li>Windows Makefiles (William Brack)</li>
2800 <li>UTF-16 support fixes (Mark Itzcovitz)</li>
2801 <li>Makefile and portability (William Brack) automake, Linux alpha, Mingw
2802 on Windows (Mikhail Grushinskiy)</li>
2803 <li>HTML parser (Oliver Stoeneberg)</li>
2804 <li>XInclude performance problem reported by Kevin Ruscoe</li>
2805 <li>XML parser performance problem reported by Grant Goodale</li>
2806 <li>xmlSAXParseDTD() bug fix from Malcolm Tredinnick</li>
2807 <li>and a couple other cleanup</li>
2810 <h3>2.5.9: Aug 9 2003</h3>
2812 <li>bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build
2813 (Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading
2814 (Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli),
2815 xmlReader, Relax-NG schemas compilation, namespace handling, EXSLT (Sean
2816 Griffin), HTML parsing problem (William Brack), DTD validation for mixed
2817 content + namespaces, HTML serialization, library initialization,
2818 progressive HTML parser</li>
2819 <li>better interfaces for Relax-NG error handling (Joachim Bauch, )</li>
2820 <li>adding xmlXIncludeProcessTree() for XInclud'ing in a subtree</li>
2821 <li>doc fixes and improvements (John Fleck)</li>
2822 <li>configure flag for -with-fexceptions when embedding in C++</li>
2823 <li>couple of new UTF-8 helper functions (William Brack)</li>
2824 <li>general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)</li>
2825 <li>xmlTextReader cleanup + enum for node types (Bjorn Reese)</li>
2826 <li>general compilation/warning cleanup Solaris/HP-UX/... (William
2830 <h3>2.5.8: Jul 6 2003</h3>
2832 <li>bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark
2833 Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack),
2834 PI related memleak, compilation without schemas or without xpath (Joerg
2835 Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs,
2836 rpm problem on , i86_64, removed a few compilation problems from 2.5.7,
2837 xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)</li>
2838 <li>portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)</li>
2839 <li>William Brack fixed multithreading lock problems</li>
2840 <li>IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)</li>
2841 <li>Windows fixes (Igor Zlatkovic, Eric Zurcher), threading (Stéphane
2843 <li>A few W3C Schemas Structure improvements</li>
2844 <li>W3C Schemas Datatype improvements (Charlie Bozeman)</li>
2845 <li>Python bindings for thread globals (Stéphane Bidoul), and method/class
2847 <li>added --nonet option to xmllint</li>
2848 <li>documentation improvements (John Fleck)</li>
2851 <h3>2.5.7: Apr 25 2003</h3>
2853 <li>Relax-NG: Compiling to regexp and streaming validation on top of the
2854 xmlReader interface, added to xmllint --stream</li>
2855 <li>xmlReader: Expand(), Next() and DOM access glue, bug fixes</li>
2856 <li>Support for large files: RGN validated a 4.5GB instance</li>
2857 <li>Thread support is now configured in by default</li>
2858 <li>Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes
2859 (Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser
2860 and zero bytes handling, some missing Windows file path conversions,
2861 behaviour of the parser and validator in the presence of "out of memory"
2862 error conditions</li>
2863 <li>extended the API to be able to plug a garbage collecting memory
2864 allocator, added xmlMallocAtomic() and modified the allocations
2866 <li>Performances: removed excessive malloc() calls, speedup of the push and
2867 xmlReader interfaces, removed excessive thread locking</li>
2868 <li>Documentation: man page (John Fleck), xmlReader documentation</li>
2869 <li>Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)</li>
2872 <h3>2.5.6: Apr 1 2003</h3>
2874 <li>Fixed W3C XML Schemas datatype, should be compliant now except for
2875 binHex and base64 which are not supported yet.</li>
2876 <li>bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and
2877 XInclude entities handling, encoding detection on external subsets, XML
2878 Schemas bugs and memory leaks, HTML parser (James Bursa)</li>
2879 <li>portability: python/trio (Albert Chin), Sun compiler warnings</li>
2880 <li>documentation: added --relaxng option to xmllint man page (John)</li>
2881 <li>improved error reporting: xml:space, start/end tag mismatches, Relax NG
2885 <h3>2.5.5: Mar 24 2003</h3>
2887 <li>Lot of fixes on the Relax NG implementation. More testing including
2888 DocBook and TEI examples.</li>
2889 <li>Increased the support for W3C XML Schemas datatype</li>
2890 <li>Several bug fixes in the URI handling layer</li>
2891 <li>Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding
2892 conversion, line counting in the parser.</li>
2893 <li>Added support for $XMLLINT_INDENT environment variable, FTP delete</li>
2894 <li>Fixed the RPM spec file name</li>
2897 <h3>2.5.4: Feb 20 2003</h3>
2899 <li>Conformance testing and lot of fixes on Relax NG and XInclude
2901 <li>Implementation of XPointer element() scheme</li>
2902 <li>Bug fixes: XML parser, XInclude entities merge, validity checking on
2904 <p>2 serialization bugs, node info generation problems, a DTD regexp
2905 generation problem.</p>
2907 <li>Portability: windows updates and path canonicalization (Igor)</li>
2908 <li>A few typo fixes (Kjartan Maraas)</li>
2909 <li>Python bindings generator fixes (Stephane Bidoul)</li>
2912 <h3>2.5.3: Feb 10 2003</h3>
2914 <li>RelaxNG and XML Schemas datatypes improvements, and added a first
2915 version of RelaxNG Python bindings</li>
2916 <li>Fixes: XLink (Sean Chittenden), XInclude (Sean Chittenden), API fix for
2917 serializing namespace nodes, encoding conversion bug, XHTML1
2919 <li>Portability fixes: Windows (Igor), AMD 64bits RPM spec file</li>
2922 <h3>2.5.2: Feb 5 2003</h3>
2924 <li>First implementation of RelaxNG, added --relaxng flag to xmllint</li>
2925 <li>Schemas support now compiled in by default.</li>
2926 <li>Bug fixes: DTD validation, namespace checking, XInclude and entities,
2927 delegateURI in XML Catalogs, HTML parser, XML reader (Stéphane Bidoul),
2928 XPath parser and evaluation, UTF8ToUTF8 serialization, XML reader memory
2929 consumption, HTML parser, HTML serialization in the presence of
2931 <li>added an HTML API to check elements and attributes.</li>
2932 <li>Documentation improvement, PDF for the tutorial (John Fleck), doc
2933 patches (Stefan Kost)</li>
2934 <li>Portability fixes: NetBSD (Julio Merino), Windows (Igor Zlatkovic)</li>
2935 <li>Added python bindings for XPointer, contextual error reporting
2936 (Stéphane Bidoul)</li>
2937 <li>URI/file escaping problems (Stefano Zacchiroli)</li>
2940 <h3>2.5.1: Jan 8 2003</h3>
2942 <li>Fixes a memory leak and configuration/compilation problems in 2.5.0</li>
2943 <li>documentation updates (John)</li>
2944 <li>a couple of XmlTextReader fixes</li>
2947 <h3>2.5.0: Jan 6 2003</h3>
2949 <li>New <a href="xmlreader.html">XmltextReader interface</a> based on C#
2950 API (with help of Stéphane Bidoul)</li>
2951 <li>Windows: more exports, including the new API (Igor)</li>
2952 <li>XInclude fallback fix</li>
2953 <li>Python: bindings for the new API, packaging (Stéphane Bidoul),
2954 drv_libxml2.py Python xml.sax driver (Stéphane Bidoul), fixes, speedup
2955 and iterators for Python-2.2 (Hannu Krosing)</li>
2956 <li>Tutorial fixes (john Fleck and Niraj Tolia) xmllint man update
2958 <li>Fix an XML parser bug raised by Vyacheslav Pindyura</li>
2959 <li>Fix for VMS serialization (Nigel Hall) and config (Craig A. Berry)</li>
2960 <li>Entities handling fixes</li>
2961 <li>new API to optionally track node creation and deletion (Lukas
2963 <li>Added documentation for the XmltextReader interface and some <a
2964 href="guidelines.html">XML guidelines</a></li>
2967 <h3>2.4.30: Dec 12 2002</h3>
2969 <li>2.4.29 broke the python bindings, rereleasing</li>
2970 <li>Improvement/fixes of the XML API generator, and couple of minor code
2974 <h3>2.4.29: Dec 11 2002</h3>
2976 <li>Windows fixes (Igor): Windows CE port, pthread linking, python bindings
2977 (Stéphane Bidoul), Mingw (Magnus Henoch), and export list updates</li>
2978 <li>Fix for prev in python bindings (ERDI Gergo)</li>
2979 <li>Fix for entities handling (Marcus Clarke)</li>
2980 <li>Refactored the XML and HTML dumps to a single code path, fixed XHTML1
2982 <li>Fix for URI parsing when handling URNs with fragment identifiers</li>
2983 <li>Fix for HTTP URL escaping problem</li>
2984 <li>added an TextXmlReader (C#) like API (work in progress)</li>
2985 <li>Rewrote the API in XML generation script, includes a C parser and saves
2986 more information needed for C# bindings</li>
2989 <h3>2.4.28: Nov 22 2002</h3>
2991 <li>a couple of python binding fixes</li>
2992 <li>2 bug fixes in the XML push parser</li>
2993 <li>potential memory leak removed (Martin Stoilov)</li>
2994 <li>fix to the configure script for Unix (Dimitri Papadopoulos)</li>
2995 <li>added encoding support for XInclude parse="text"</li>
2996 <li>autodetection of XHTML1 and specific serialization rules added</li>
2997 <li>nasty threading bug fixed (William Brack)</li>
3000 <h3>2.4.27: Nov 17 2002</h3>
3002 <li>fixes for the Python bindings</li>
3003 <li>a number of bug fixes: SGML catalogs, xmlParseBalancedChunkMemory(),
3004 HTML parser, Schemas (Charles Bozeman), document fragment support
3005 (Christian Glahn), xmlReconciliateNs (Brian Stafford), XPointer,
3006 xmlFreeNode(), xmlSAXParseMemory (Peter Jones), xmlGetNodePath (Petr
3007 Pajas), entities processing</li>
3008 <li>added grep to xmllint --shell</li>
3009 <li>VMS update patch from Craig A. Berry</li>
3010 <li>cleanup of the Windows build with support for more compilers (Igor),
3011 better thread support on Windows</li>
3012 <li>cleanup of Unix Makefiles and spec file</li>
3013 <li>Improvements to the documentation (John Fleck)</li>
3016 <h3>2.4.26: Oct 18 2002</h3>
3018 <li>Patches for Windows CE port, improvements on Windows paths handling</li>
3019 <li>Fixes to the validation code (DTD and Schemas), xmlNodeGetPath() ,
3020 HTML serialization, Namespace compliance, and a number of small
3024 <h3>2.4.25: Sep 26 2002</h3>
3026 <li>A number of bug fixes: XPath, validation, Python bindings, DOM and
3027 tree, xmlI/O, Html</li>
3028 <li>Serious rewrite of XInclude</li>
3029 <li>Made XML Schemas regexp part of the default build and APIs, small fix
3030 and improvement of the regexp core</li>
3031 <li>Changed the validation code to reuse XML Schemas regexp APIs</li>
3032 <li>Better handling of Windows file paths, improvement of Makefiles (Igor,
3033 Daniel Gehriger, Mark Vakoc)</li>
3034 <li>Improved the python I/O bindings, the tests, added resolver and regexp
3036 <li>New logos from Marc Liyanage</li>
3037 <li>Tutorial improvements: John Fleck, Christopher Harris</li>
3038 <li>Makefile: Fixes for AMD x86_64 (Mandrake), DESTDIR (Christophe
3040 <li>removal of all stderr/perror use for error reporting</li>
3041 <li>Better error reporting: XPath and DTD validation</li>
3042 <li>update of the trio portability layer (Bjorn Reese)</li>
3045 <p><strong>2.4.24: Aug 22 2002</strong></p>
3047 <li>XPath fixes (William), xf:escape-uri() (Wesley Terpstra)</li>
3048 <li>Python binding fixes: makefiles (William), generator, rpm build, x86-64
3050 <li>HTML <style> and boolean attributes serializer fixes</li>
3051 <li>C14N improvements by Aleksey</li>
3052 <li>doc cleanups: Rick Jones</li>
3053 <li>Windows compiler makefile updates: Igor and Elizabeth Barham</li>
3054 <li>XInclude: implementation of fallback and xml:base fixup added</li>
3057 <h3>2.4.23: July 6 2002</h3>
3059 <li>performances patches: Peter Jacobi</li>
3060 <li>c14n fixes, testsuite and performances: Aleksey Sanin</li>
3061 <li>added xmlDocFormatDump: Chema Celorio</li>
3062 <li>new tutorial: John Fleck</li>
3063 <li>new hash functions and performances: Sander Vesik, portability fix from
3065 <li>a number of bug fixes: XPath (William Brack, Richard Jinks), XML and
3066 HTML parsers, ID lookup function</li>
3067 <li>removal of all remaining sprintf: Aleksey Sanin</li>
3070 <h3>2.4.22: May 27 2002</h3>
3072 <li>a number of bug fixes: configure scripts, base handling, parser, memory
3073 usage, HTML parser, XPath, documentation (Christian Cornelssen),
3074 indentation, URI parsing</li>
3075 <li>Optimizations for XMLSec, fixing and making public some of the network
3076 protocol handlers (Aleksey)</li>
3077 <li>performance patch from Gary Pennington</li>
3078 <li>Charles Bozeman provided date and time support for XML Schemas
3082 <h3>2.4.21: Apr 29 2002</h3>
3084 <p>This release is both a bug fix release and also contains the early XML
3085 Schemas <a href="http://www.w3.org/TR/xmlschema-1/">structures</a> and <a
3086 href="http://www.w3.org/TR/xmlschema-2/">datatypes</a> code, beware, all
3087 interfaces are likely to change, there is huge holes, it is clearly a work in
3088 progress and don't even think of putting this code in a production system,
3089 it's actually not compiled in by default. The real fixes are:
3093 <li>a couple of bugs or limitations introduced in 2.4.20</li>
3094 <li>patches for Borland C++ and MSC by Igor</li>
3095 <li>some fixes on XPath strings and conformance patches by Richard
3097 <li>patch from Aleksey for the ExcC14N specification</li>
3098 <li>OSF/1 bug fix by Bjorn</li>
3101 <h3>2.4.20: Apr 15 2002</h3>
3103 <li>bug fixes: file descriptor leak, XPath, HTML output, DTD validation</li>
3104 <li>XPath conformance testing by Richard Jinks</li>
3105 <li>Portability fixes: Solaris, MPE/iX, Windows, OSF/1, python bindings,
3109 <h3>2.4.19: Mar 25 2002</h3>
3111 <li>bug fixes: half a dozen XPath bugs, Validation, ISO-Latin to UTF8
3113 <li>portability fixes in the HTTP code</li>
3114 <li>memory allocation checks using valgrind, and profiling tests</li>
3115 <li>revamp of the Windows build and Makefiles</li>
3118 <h3>2.4.18: Mar 18 2002</h3>
3120 <li>bug fixes: tree, SAX, canonicalization, validation, portability,
3122 <li>removed the --with-buffer option it was becoming unmaintainable</li>
3123 <li>serious cleanup of the Python makefiles</li>
3124 <li>speedup patch to XPath very effective for DocBook stylesheets</li>
3125 <li>Fixes for Windows build, cleanup of the documentation</li>
3128 <h3>2.4.17: Mar 8 2002</h3>
3130 <li>a lot of bug fixes, including "namespace nodes have no parents in
3132 <li>fixed/improved the Python wrappers, added more examples and more
3133 regression tests, XPath extension functions can now return node-sets</li>
3134 <li>added the XML Canonicalization support from Aleksey Sanin</li>
3137 <h3>2.4.16: Feb 20 2002</h3>
3139 <li>a lot of bug fixes, most of them were triggered by the XML Testsuite
3140 from OASIS and W3C. Compliance has been significantly improved.</li>
3141 <li>a couple of portability fixes too.</li>
3144 <h3>2.4.15: Feb 11 2002</h3>
3146 <li>Fixed the Makefiles, especially the python module ones</li>
3147 <li>A few bug fixes and cleanup</li>
3148 <li>Includes cleanup</li>
3151 <h3>2.4.14: Feb 8 2002</h3>
3153 <li>Change of License to the <a
3154 href="http://www.opensource.org/licenses/mit-license.html">MIT
3155 License</a> basically for integration in XFree86 codebase, and removing
3156 confusion around the previous dual-licensing</li>
3157 <li>added Python bindings, beta software but should already be quite
3159 <li>a large number of fixes and cleanups, especially for all tree
3161 <li>cleanup of the headers, generation of a reference API definition in
3165 <h3>2.4.13: Jan 14 2002</h3>
3167 <li>update of the documentation: John Fleck and Charlie Bozeman</li>
3168 <li>cleanup of timing code from Justin Fletcher</li>
3169 <li>fixes for Windows and initial thread support on Win32: Igor and Serguei
3171 <li>Cygwin patch from Robert Collins</li>
3172 <li>added xmlSetEntityReferenceFunc() for Keith Isdale work on xsldbg</li>
3175 <h3>2.4.12: Dec 7 2001</h3>
3177 <li>a few bug fixes: thread (Gary Pennington), xmllint (Geert Kloosterman),
3178 XML parser (Robin Berjon), XPointer (Danny Jamshy), I/O cleanups
3180 <li>Eric Lavigne contributed project files for MacOS</li>
3181 <li>some makefiles cleanups</li>
3184 <h3>2.4.11: Nov 26 2001</h3>
3186 <li>fixed a couple of errors in the includes, fixed a few bugs, some code
3188 <li>xmllint man pages improvement by Heiko Rupp</li>
3189 <li>updated VMS build instructions from John A Fotheringham</li>
3190 <li>Windows Makefiles updates from Igor</li>
3193 <h3>2.4.10: Nov 10 2001</h3>
3195 <li>URI escaping fix (Joel Young)</li>
3196 <li>added xmlGetNodePath() (for paths or XPointers generation)</li>
3197 <li>Fixes namespace handling problems when using DTD and validation</li>
3198 <li>improvements on xmllint: Morus Walter patches for --format and
3199 --encode, Stefan Kost and Heiko Rupp improvements on the --shell</li>
3200 <li>fixes for xmlcatalog linking pointed by Weiqi Gao</li>
3201 <li>fixes to the HTML parser</li>
3204 <h3>2.4.9: Nov 6 2001</h3>
3206 <li>fixes more catalog bugs</li>
3207 <li>avoid a compilation problem, improve xmlGetLineNo()</li>
3210 <h3>2.4.8: Nov 4 2001</h3>
3212 <li>fixed SGML catalogs broken in previous release, updated xmlcatalog
3214 <li>fixed a compile errors and some includes troubles.</li>
3217 <h3>2.4.7: Oct 30 2001</h3>
3219 <li>exported some debugging interfaces</li>
3220 <li>serious rewrite of the catalog code</li>
3221 <li>integrated Gary Pennington thread safety patch, added configure option
3222 and regression tests</li>
3223 <li>removed an HTML parser bug</li>
3224 <li>fixed a couple of potentially serious validation bugs</li>
3225 <li>integrated the SGML DocBook support in xmllint</li>
3226 <li>changed the nanoftp anonymous login passwd</li>
3227 <li>some I/O cleanup and a couple of interfaces for Perl wrapper</li>
3228 <li>general bug fixes</li>
3229 <li>updated xmllint man page by John Fleck</li>
3230 <li>some VMS and Windows updates</li>
3233 <h3>2.4.6: Oct 10 2001</h3>
3235 <li>added an updated man pages by John Fleck</li>
3236 <li>portability and configure fixes</li>
3237 <li>an infinite loop on the HTML parser was removed (William)</li>
3238 <li>Windows makefile patches from Igor</li>
3239 <li>fixed half a dozen bugs reported for libxml or libxslt</li>
3240 <li>updated xmlcatalog to be able to modify SGML super catalogs</li>
3243 <h3>2.4.5: Sep 14 2001</h3>
3245 <li>Remove a few annoying bugs in 2.4.4</li>
3246 <li>forces the HTML serializer to output decimal charrefs since some
3247 version of Netscape can't handle hexadecimal ones</li>
3250 <h3>1.8.16: Sep 14 2001</h3>
3252 <li>maintenance release of the old libxml1 branch, couple of bug and
3253 portability fixes</li>
3256 <h3>2.4.4: Sep 12 2001</h3>
3258 <li>added --convert to xmlcatalog, bug fixes and cleanups of XML
3260 <li>a few bug fixes and some portability changes</li>
3261 <li>some documentation cleanups</li>
3264 <h3>2.4.3: Aug 23 2001</h3>
3266 <li>XML Catalog support see the doc</li>
3267 <li>New NaN/Infinity floating point code</li>
3268 <li>A few bug fixes</li>
3271 <h3>2.4.2: Aug 15 2001</h3>
3273 <li>adds xmlLineNumbersDefault() to control line number generation</li>
3274 <li>lot of bug fixes</li>
3275 <li>the Microsoft MSC projects files should now be up to date</li>
3276 <li>inheritance of namespaces from DTD defaulted attributes</li>
3277 <li>fixes a serious potential security bug</li>
3278 <li>added a --format option to xmllint</li>
3281 <h3>2.4.1: July 24 2001</h3>
3283 <li>possibility to keep line numbers in the tree</li>
3284 <li>some computation NaN fixes</li>
3285 <li>extension of the XPath API</li>
3286 <li>cleanup for alpha and ia64 targets</li>
3287 <li>patch to allow saving through HTTP PUT or POST</li>
3290 <h3>2.4.0: July 10 2001</h3>
3292 <li>Fixed a few bugs in XPath, validation, and tree handling.</li>
3293 <li>Fixed XML Base implementation, added a couple of examples to the
3294 regression tests</li>
3295 <li>A bit of cleanup</li>
3298 <h3>2.3.14: July 5 2001</h3>
3300 <li>fixed some entities problems and reduce memory requirement when
3301 substituting them</li>
3302 <li>lots of improvements in the XPath queries interpreter can be
3303 substantially faster</li>
3304 <li>Makefiles and configure cleanups</li>
3305 <li>Fixes to XPath variable eval, and compare on empty node set</li>
3306 <li>HTML tag closing bug fixed</li>
3307 <li>Fixed an URI reference computation problem when validating</li>
3310 <h3>2.3.13: June 28 2001</h3>
3312 <li>2.3.12 configure.in was broken as well as the push mode XML parser</li>
3313 <li>a few more fixes for compilation on Windows MSC by Yon Derek</li>
3316 <h3>1.8.14: June 28 2001</h3>
3318 <li>Zbigniew Chyla gave a patch to use the old XML parser in push mode</li>
3319 <li>Small Makefile fix</li>
3322 <h3>2.3.12: June 26 2001</h3>
3324 <li>lots of cleanup</li>
3325 <li>a couple of validation fix</li>
3326 <li>fixed line number counting</li>
3327 <li>fixed serious problems in the XInclude processing</li>
3328 <li>added support for UTF8 BOM at beginning of entities</li>
3329 <li>fixed a strange gcc optimizer bugs in xpath handling of float, gcc-3.0
3330 miscompile uri.c (William), Thomas Leitner provided a fix for the
3331 optimizer on Tru64</li>
3332 <li>incorporated Yon Derek and Igor Zlatkovic fixes and improvements for
3333 compilation on Windows MSC</li>
3334 <li>update of libxml-doc.el (Felix Natter)</li>
3335 <li>fixed 2 bugs in URI normalization code</li>
3338 <h3>2.3.11: June 17 2001</h3>
3340 <li>updates to trio, Makefiles and configure should fix some portability
3341 problems (alpha)</li>
3342 <li>fixed some HTML serialization problems (pre, script, and block/inline
3343 handling), added encoding aware APIs, cleanup of this code</li>
3344 <li>added xmlHasNsProp()</li>
3345 <li>implemented a specific PI for encoding support in the DocBook SGML
3347 <li>some XPath fixes (-Infinity, / as a function parameter and namespaces
3348 node selection)</li>
3349 <li>fixed a performance problem and an error in the validation code</li>
3350 <li>fixed XInclude routine to implement the recursive behaviour</li>
3351 <li>fixed xmlFreeNode problem when libxml is included statically twice</li>
3352 <li>added --version to xmllint for bug reports</li>
3355 <h3>2.3.10: June 1 2001</h3>
3357 <li>fixed the SGML catalog support</li>
3358 <li>a number of reported bugs got fixed, in XPath, iconv detection,
3359 XInclude processing</li>
3360 <li>XPath string function should now handle unicode correctly</li>
3363 <h3>2.3.9: May 19 2001</h3>
3365 <p>Lots of bugfixes, and added a basic SGML catalog support:
3368 <li>HTML push bugfix #54891 and another patch from Jonas Borgstrom</li>
3369 <li>some serious speed optimization again</li>
3370 <li>some documentation cleanups</li>
3371 <li>trying to get better linking on Solaris (-R)</li>
3372 <li>XPath API cleanup from Thomas Broyer</li>
3373 <li>Validation bug fixed #54631, added a patch from Gary Pennington, fixed
3374 xmlValidGetValidElements()</li>
3375 <li>Added an INSTALL file</li>
3376 <li>Attribute removal added to API: #54433</li>
3377 <li>added a basic support for SGML catalogs</li>
3378 <li>fixed xmlKeepBlanksDefault(0) API</li>
3379 <li>bugfix in xmlNodeGetLang()</li>
3380 <li>fixed a small configure portability problem</li>
3381 <li>fixed an inversion of SYSTEM and PUBLIC identifier in HTML document</li>
3384 <h3>1.8.13: May 14 2001</h3>
3386 <li>bugfixes release of the old libxml1 branch used by Gnome</li>
3389 <h3>2.3.8: May 3 2001</h3>
3391 <li>Integrated an SGML DocBook parser for the Gnome project</li>
3392 <li>Fixed a few things in the HTML parser</li>
3393 <li>Fixed some XPath bugs raised by XSLT use, tried to fix the floating
3394 point portability issue</li>
3395 <li>Speed improvement (8M/s for SAX, 3M/s for DOM, 1.5M/s for
3396 DOM+validation using the XML REC as input and a 700MHz celeron).</li>
3397 <li>incorporated more Windows cleanup</li>
3398 <li>added xmlSaveFormatFile()</li>
3399 <li>fixed problems in copying nodes with entities references (gdome)</li>
3400 <li>removed some troubles surrounding the new validation module</li>
3403 <h3>2.3.7: April 22 2001</h3>
3405 <li>lots of small bug fixes, corrected XPointer</li>
3406 <li>Non deterministic content model validation support</li>
3407 <li>added xmlDocCopyNode for gdome2</li>
3408 <li>revamped the way the HTML parser handles end of tags</li>
3409 <li>XPath: corrections of namespaces support and number formatting</li>
3410 <li>Windows: Igor Zlatkovic patches for MSC compilation</li>
3411 <li>HTML output fixes from P C Chow and William M. Brack</li>
3412 <li>Improved validation speed sensible for DocBook</li>
3413 <li>fixed a big bug with ID declared in external parsed entities</li>
3414 <li>portability fixes, update of Trio from Bjorn Reese</li>
3417 <h3>2.3.6: April 8 2001</h3>
3419 <li>Code cleanup using extreme gcc compiler warning options, found and
3420 cleared half a dozen potential problem</li>
3421 <li>the Eazel team found an XML parser bug</li>
3422 <li>cleaned up the user of some of the string formatting function. used the
3423 trio library code to provide the one needed when the platform is missing
3425 <li>xpath: removed a memory leak and fixed the predicate evaluation
3426 problem, extended the testsuite and cleaned up the result. XPointer seems
3430 <h3>2.3.5: Mar 23 2001</h3>
3432 <li>Biggest change is separate parsing and evaluation of XPath expressions,
3433 there is some new APIs for this too</li>
3434 <li>included a number of bug fixes(XML push parser, 51876, notations,
3436 <li>Fixed some portability issues</li>
3439 <h3>2.3.4: Mar 10 2001</h3>
3441 <li>Fixed bugs #51860 and #51861</li>
3442 <li>Added a global variable xmlDefaultBufferSize to allow default buffer
3443 size to be application tunable.</li>
3444 <li>Some cleanup in the validation code, still a bug left and this part
3445 should probably be rewritten to support ambiguous content model :-\</li>
3446 <li>Fix a couple of serious bugs introduced or raised by changes in 2.3.3
3448 <li>Fixed another bug in xmlNodeGetContent()</li>
3449 <li>Bjorn fixed XPath node collection and Number formatting</li>
3450 <li>Fixed a loop reported in the HTML parsing</li>
3451 <li>blank space are reported even if the Dtd content model proves that they
3452 are formatting spaces, this is for XML conformance</li>
3455 <h3>2.3.3: Mar 1 2001</h3>
3457 <li>small change in XPath for XSLT</li>
3458 <li>documentation cleanups</li>
3459 <li>fix in validation by Gary Pennington</li>
3460 <li>serious parsing performances improvements</li>
3463 <h3>2.3.2: Feb 24 2001</h3>
3465 <li>chasing XPath bugs, found a bunch, completed some TODO</li>
3466 <li>fixed a Dtd parsing bug</li>
3467 <li>fixed a bug in xmlNodeGetContent</li>
3468 <li>ID/IDREF support partly rewritten by Gary Pennington</li>
3471 <h3>2.3.1: Feb 15 2001</h3>
3473 <li>some XPath and HTML bug fixes for XSLT</li>
3474 <li>small extension of the hash table interfaces for DOM gdome2
3476 <li>A few bug fixes</li>
3479 <h3>2.3.0: Feb 8 2001 (2.2.12 was on 25 Jan but I didn't kept track)</h3>
3481 <li>Lots of XPath bug fixes</li>
3482 <li>Add a mode with Dtd lookup but without validation error reporting for
3484 <li>Add support for text node without escaping (XSLT)</li>
3485 <li>bug fixes for xmlCheckFilename</li>
3486 <li>validation code bug fixes from Gary Pennington</li>
3487 <li>Patch from Paul D. Smith correcting URI path normalization</li>
3488 <li>Patch to allow simultaneous install of libxml-devel and
3490 <li>the example Makefile is now fixed</li>
3491 <li>added HTML to the RPM packages</li>
3492 <li>tree copying bugfixes</li>
3493 <li>updates to Windows makefiles</li>
3494 <li>optimization patch from Bjorn Reese</li>
3497 <h3>2.2.11: Jan 4 2001</h3>
3499 <li>bunch of bug fixes (memory I/O, xpath, ftp/http, ...)</li>
3500 <li>added htmlHandleOmittedElem()</li>
3501 <li>Applied Bjorn Reese's IPV6 first patch</li>
3502 <li>Applied Paul D. Smith patches for validation of XInclude results</li>
3503 <li>added XPointer xmlns() new scheme support</li>
3506 <h3>2.2.10: Nov 25 2000</h3>
3508 <li>Fix the Windows problems of 2.2.8</li>
3509 <li>integrate OpenVMS patches</li>
3510 <li>better handling of some nasty HTML input</li>
3511 <li>Improved the XPointer implementation</li>
3512 <li>integrate a number of provided patches</li>
3515 <h3>2.2.9: Nov 25 2000</h3>
3517 <li>erroneous release :-(</li>
3520 <h3>2.2.8: Nov 13 2000</h3>
3522 <li>First version of <a href="http://www.w3.org/TR/xinclude">XInclude</a>
3524 <li>Patch in conditional section handling</li>
3525 <li>updated MS compiler project</li>
3526 <li>fixed some XPath problems</li>
3527 <li>added an URI escaping function</li>
3528 <li>some other bug fixes</li>
3531 <h3>2.2.7: Oct 31 2000</h3>
3533 <li>added message redirection</li>
3534 <li>XPath improvements (thanks TOM !)</li>
3535 <li>xmlIOParseDTD() added</li>
3536 <li>various small fixes in the HTML, URI, HTTP and XPointer support</li>
3537 <li>some cleanup of the Makefile, autoconf and the distribution content</li>
3540 <h3>2.2.6: Oct 25 2000:</h3>
3542 <li>Added an hash table module, migrated a number of internal structure to
3544 <li>Fixed a posteriori validation problems</li>
3545 <li>HTTP module cleanups</li>
3546 <li>HTML parser improvements (tag errors, script/style handling, attribute
3548 <li>coalescing of adjacent text nodes</li>
3549 <li>couple of XPath bug fixes, exported the internal API</li>
3552 <h3>2.2.5: Oct 15 2000:</h3>
3554 <li>XPointer implementation and testsuite</li>
3555 <li>Lot of XPath fixes, added variable and functions registration, more
3557 <li>Portability fixes, lots of enhancements toward an easy Windows build
3559 <li>Late validation fixes</li>
3560 <li>Integrated a lot of contributed patches</li>
3561 <li>added memory management docs</li>
3562 <li>a performance problem when using large buffer seems fixed</li>
3565 <h3>2.2.4: Oct 1 2000:</h3>
3567 <li>main XPath problem fixed</li>
3568 <li>Integrated portability patches for Windows</li>
3569 <li>Serious bug fixes on the URI and HTML code</li>
3572 <h3>2.2.3: Sep 17 2000</h3>
3575 <li>cleanup of entity handling code</li>
3576 <li>overall review of all loops in the parsers, all sprintf usage has been
3578 <li>Far better handling of larges Dtd. Validating against DocBook XML Dtd
3579 works smoothly now.</li>
3582 <h3>1.8.10: Sep 6 2000</h3>
3584 <li>bug fix release for some Gnome projects</li>
3587 <h3>2.2.2: August 12 2000</h3>
3589 <li>mostly bug fixes</li>
3590 <li>started adding routines to access xml parser context options</li>
3593 <h3>2.2.1: July 21 2000</h3>
3595 <li>a purely bug fixes release</li>
3596 <li>fixed an encoding support problem when parsing from a memory block</li>
3597 <li>fixed a DOCTYPE parsing problem</li>
3598 <li>removed a bug in the function allowing to override the memory
3599 allocation routines</li>
3602 <h3>2.2.0: July 14 2000</h3>
3604 <li>applied a lot of portability fixes</li>
3605 <li>better encoding support/cleanup and saving (content is now always
3606 encoded in UTF-8)</li>
3607 <li>the HTML parser now correctly handles encodings</li>
3608 <li>added xmlHasProp()</li>
3609 <li>fixed a serious problem with &#38;</li>
3610 <li>propagated the fix to FTP client</li>
3611 <li>cleanup, bugfixes, etc ...</li>
3612 <li>Added a page about <a href="encoding.html">libxml Internationalization
3616 <h3>1.8.9: July 9 2000</h3>
3618 <li>fixed the spec the RPMs should be better</li>
3619 <li>fixed a serious bug in the FTP implementation, released 1.8.9 to solve
3620 rpmfind users problem</li>
3623 <h3>2.1.1: July 1 2000</h3>
3625 <li>fixes a couple of bugs in the 2.1.0 packaging</li>
3626 <li>improvements on the HTML parser</li>
3629 <h3>2.1.0 and 1.8.8: June 29 2000</h3>
3631 <li>1.8.8 is mostly a commodity package for upgrading to libxml2 according
3632 to <a href="upgrade.html">new instructions</a>. It fixes a nasty problem
3633 about &#38; charref parsing</li>
3634 <li>2.1.0 also ease the upgrade from libxml v1 to the recent version. it
3635 also contains numerous fixes and enhancements:
3637 <li>added xmlStopParser() to stop parsing</li>
3638 <li>improved a lot parsing speed when there is large CDATA blocs</li>
3639 <li>includes XPath patches provided by Picdar Technology</li>
3640 <li>tried to fix as much as possible DTD validation and namespace
3641 related problems</li>
3642 <li>output to a given encoding has been added/tested</li>
3643 <li>lot of various fixes</li>
3648 <h3>2.0.0: Apr 12 2000</h3>
3650 <li>First public release of libxml2. If you are using libxml, it's a good
3651 idea to check the 1.x to 2.x upgrade instructions. NOTE: while initially
3652 scheduled for Apr 3 the release occurred only on Apr 12 due to massive
3654 <li>The include are now located under $prefix/include/libxml (instead of
3655 $prefix/include/gnome-xml), they also are referenced by
3656 <pre>#include <libxml/xxx.h></pre>
3658 <pre>#include "xxx.h"</pre>
3660 <li>a new URI module for parsing URIs and following strictly RFC 2396</li>
3661 <li>the memory allocation routines used by libxml can now be overloaded
3662 dynamically by using xmlMemSetup()</li>
3663 <li>The previously CVS only tool tester has been renamed
3664 <strong>xmllint</strong> and is now installed as part of the libxml2
3666 <li>The I/O interface has been revamped. There is now ways to plug in
3667 specific I/O modules, either at the URI scheme detection level using
3668 xmlRegisterInputCallbacks() or by passing I/O functions when creating a
3669 parser context using xmlCreateIOParserCtxt()</li>
3670 <li>there is a C preprocessor macro LIBXML_VERSION providing the version
3671 number of the libxml module in use</li>
3672 <li>a number of optional features of libxml can now be excluded at
3673 configure time (FTP/HTTP/HTML/XPath/Debug)</li>
3676 <h3>2.0.0beta: Mar 14 2000</h3>
3678 <li>This is a first Beta release of libxml version 2</li>
3679 <li>It's available only from<a href="ftp://xmlsoft.org/libxml2/">xmlsoft.org
3680 FTP</a>, it's packaged as libxml2-2.0.0beta and available as tar and
3682 <li>This version is now the head in the Gnome CVS base, the old one is
3683 available under the tag LIB_XML_1_X</li>
3684 <li>This includes a very large set of changes. From a programmatic point
3685 of view applications should not have to be modified too much, check the
3686 <a href="upgrade.html">upgrade page</a></li>
3687 <li>Some interfaces may changes (especially a bit about encoding).</li>
3688 <li>the updates includes:
3690 <li>fix I18N support. ISO-Latin-x/UTF-8/UTF-16 (nearly) seems correctly
3692 <li>Better handling of entities, especially well-formedness checking
3693 and proper PEref extensions in external subsets</li>
3694 <li>DTD conditional sections</li>
3695 <li>Validation now correctly handle entities content</li>
3696 <li><a href="http://rpmfind.net/tools/gdome/messages/0039.html">change
3697 structures to accommodate DOM</a></li>
3700 <li>Serious progress were made toward compliance, <a
3701 href="conf/result.html">here are the result of the test</a> against the
3702 OASIS testsuite (except the Japanese tests since I don't support that
3703 encoding yet). This URL is rebuilt every couple of hours using the CVS
3707 <h3>1.8.7: Mar 6 2000</h3>
3709 <li>This is a bug fix release:</li>
3710 <li>It is possible to disable the ignorable blanks heuristic used by
3711 libxml-1.x, a new function xmlKeepBlanksDefault(0) will allow this. Note
3712 that for adherence to XML spec, this behaviour will be disabled by
3713 default in 2.x . The same function will allow to keep compatibility for
3715 <li>Blanks in <a> </a> constructs are not ignored anymore,
3716 avoiding heuristic is really the Right Way :-\</li>
3717 <li>The unchecked use of snprintf which was breaking libxml-1.8.6
3718 compilation on some platforms has been fixed</li>
3719 <li>nanoftp.c nanohttp.c: Fixed '#' and '?' stripping when processing
3723 <h3>1.8.6: Jan 31 2000</h3>
3725 <li>added a nanoFTP transport module, debugged until the new version of <a
3726 href="http://rpmfind.net/linux/rpm2html/rpmfind.html">rpmfind</a> can use
3727 it without troubles</li>
3730 <h3>1.8.5: Jan 21 2000</h3>
3732 <li>adding APIs to parse a well balanced chunk of XML (production <a
3733 href="http://www.w3.org/TR/REC-xml#NT-content">[43] content</a> of the
3735 <li>fixed a hideous bug in xmlGetProp pointed by Rune.Djurhuus@fast.no</li>
3736 <li>Jody Goldberg <jgoldberg@home.com> provided another patch trying
3737 to solve the zlib checks problems</li>
3738 <li>The current state in gnome CVS base is expected to ship as 1.8.5 with
3742 <h3>1.8.4: Jan 13 2000</h3>
3744 <li>bug fixes, reintroduced xmlNewGlobalNs(), fixed xmlNewNs()</li>
3745 <li>all exit() call should have been removed from libxml</li>
3746 <li>fixed a problem with INCLUDE_WINSOCK on WIN32 platform</li>
3747 <li>added newDocFragment()</li>
3750 <h3>1.8.3: Jan 5 2000</h3>
3752 <li>a Push interface for the XML and HTML parsers</li>
3753 <li>a shell-like interface to the document tree (try tester --shell :-)</li>
3754 <li>lots of bug fixes and improvement added over XMas holidays</li>
3755 <li>fixed the DTD parsing code to work with the xhtml DTD</li>
3756 <li>added xmlRemoveProp(), xmlRemoveID() and xmlRemoveRef()</li>
3757 <li>Fixed bugs in xmlNewNs()</li>
3758 <li>External entity loading code has been revamped, now it uses
3759 xmlLoadExternalEntity(), some fix on entities processing were added</li>
3760 <li>cleaned up WIN32 includes of socket stuff</li>
3763 <h3>1.8.2: Dec 21 1999</h3>
3765 <li>I got another problem with includes and C++, I hope this issue is fixed
3766 for good this time</li>
3767 <li>Added a few tree modification functions: xmlReplaceNode,
3768 xmlAddPrevSibling, xmlAddNextSibling, xmlNodeSetName and
3769 xmlDocSetRootElement</li>
3770 <li>Tried to improve the HTML output with help from <a
3771 href="mailto:clahey@umich.edu">Chris Lahey</a></li>
3774 <h3>1.8.1: Dec 18 1999</h3>
3776 <li>various patches to avoid troubles when using libxml with C++ compilers
3777 the "namespace" keyword and C escaping in include files</li>
3778 <li>a problem in one of the core macros IS_CHAR was corrected</li>
3779 <li>fixed a bug introduced in 1.8.0 breaking default namespace processing,
3780 and more specifically the Dia application</li>
3781 <li>fixed a posteriori validation (validation after parsing, or by using a
3782 Dtd not specified in the original document)</li>
3783 <li>fixed a bug in</li>
3786 <h3>1.8.0: Dec 12 1999</h3>
3788 <li>cleanup, especially memory wise</li>
3789 <li>the parser should be more reliable, especially the HTML one, it should
3790 not crash, whatever the input !</li>
3791 <li>Integrated various patches, especially a speedup improvement for large
3792 dataset from <a href="mailto:cnygard@bellatlantic.net">Carl Nygard</a>,
3793 configure with --with-buffers to enable them.</li>
3794 <li>attribute normalization, oops should have been added long ago !</li>
3795 <li>attributes defaulted from DTDs should be available, xmlSetProp() now
3796 does entities escaping by default.</li>
3799 <h3>1.7.4: Oct 25 1999</h3>
3801 <li>Lots of HTML improvement</li>
3802 <li>Fixed some errors when saving both XML and HTML</li>
3803 <li>More examples, the regression tests should now look clean</li>
3804 <li>Fixed a bug with contiguous charref</li>
3807 <h3>1.7.3: Sep 29 1999</h3>
3809 <li>portability problems fixed</li>
3810 <li>snprintf was used unconditionally, leading to link problems on system
3811 were it's not available, fixed</li>
3814 <h3>1.7.1: Sep 24 1999</h3>
3816 <li>The basic type for strings manipulated by libxml has been renamed in
3817 1.7.1 from <strong>CHAR</strong> to <strong>xmlChar</strong>. The reason
3818 is that CHAR was conflicting with a predefined type on Windows. However
3819 on non WIN32 environment, compatibility is provided by the way of a
3820 <strong>#define </strong>.</li>
3821 <li>Changed another error : the use of a structure field called errno, and
3822 leading to troubles on platforms where it's a macro</li>
3825 <h3>1.7.0: Sep 23 1999</h3>
3827 <li>Added the ability to fetch remote DTD or parsed entities, see the <a
3828 href="html/libxml-nanohttp.html">nanohttp</a> module.</li>
3829 <li>Added an errno to report errors by another mean than a simple printf
3831 <li>Finished ID/IDREF support and checking when validation</li>
3832 <li>Serious memory leaks fixed (there is now a <a
3833 href="html/libxml-xmlmemory.html">memory wrapper</a> module)</li>
3834 <li>Improvement of <a href="http://www.w3.org/TR/xpath">XPath</a>
3836 <li>Added an HTML parser front-end</li>
3839 <h2><a name="XML">XML</a></h2>
3841 <p><a href="http://www.w3.org/TR/REC-xml">XML is a standard</a> for
3842 markup-based structured documents. Here is <a name="example">an example XML
3844 <pre><?xml version="1.0"?>
3845 <EXAMPLE prop1="gnome is great" prop2="&amp; linux too">
3847 <title>Welcome to Gnome</title>
3850 <title>The Linux adventure</title>
3851 <p>bla bla bla ...</p>
3852 <image href="linus.gif"/>
3853 <p>...</p>
3855 </EXAMPLE></pre>
3857 <p>The first line specifies that it is an XML document and gives useful
3858 information about its encoding. Then the rest of the document is a text
3859 format whose structure is specified by tags between brackets. <strong>Each
3860 tag opened has to be closed</strong>. XML is pedantic about this. However, if
3861 a tag is empty (no content), a single tag can serve as both the opening and
3862 closing tag if it ends with <code>/></code> rather than with
3863 <code>></code>. Note that, for example, the image tag has no content (just
3864 an attribute) and is closed by ending the tag with <code>/></code>.</p>
3866 <p>XML can be applied successfully to a wide range of tasks, ranging from
3867 long term structured document maintenance (where it follows the steps of
3868 SGML) to simple data encoding mechanisms like configuration file formatting
3869 (glade), spreadsheets (gnumeric), or even shorter lived documents such as
3870 WebDAV where it is used to encode remote calls between a client and a
3873 <h2><a name="XSLT">XSLT</a></h2>
3875 <p>Check <a href="http://xmlsoft.org/XSLT">the separate libxslt page</a></p>
3877 <p><a href="http://www.w3.org/TR/xslt">XSL Transformations</a>, is a
3878 language for transforming XML documents into other XML documents (or
3879 HTML/textual output).</p>
3881 <p>A separate library called libxslt is available implementing XSLT-1.0 for
3882 libxml2. This module "libxslt" too can be found in the Gnome SVN base.</p>
3884 <p>You can check the progresses on the libxslt <a
3885 href="http://xmlsoft.org/XSLT/ChangeLog.html">Changelog</a>.</p>
3887 <h2><a name="Python">Python and bindings</a></h2>
3889 <p>There are a number of language bindings and wrappers available for
3890 libxml2, the list below is not exhaustive. Please contact the <a
3891 href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a>
3892 (<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) in
3893 order to get updates to this list or to discuss the specific topic of libxml2
3894 or libxslt wrappers or bindings:</p>
3896 <li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a> seems the
3897 most up-to-date C++ bindings for libxml2, check the <a
3898 href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a>
3900 href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li>
3901 <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++ wrapper
3902 based on the gdome2 bindings</a> maintained by Tobias Peters.</li>
3903 <li>and a third C++ wrapper by Peter Jones <pjones@pmade.org>
3905 href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p>
3907 <li>XML::LibXML <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXML">Perl
3908 bindings</a> are available on CPAN, as well as XML::LibXSLT
3909 <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXSLT">Perl libxslt
3911 <li>If you're interested into scripting XML processing, have a look at <a
3912 href="http://xsh.sourceforge.net/">XSH</a> an XML editing shell based on
3913 Libxml2 Perl bindings.</li>
3914 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provides an
3915 earlier version of the libxml/libxslt <a
3916 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li>
3917 <li>Gopal.V and Peter Minten develop <a
3918 href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set of
3919 C# libxml2 bindings.</li>
3920 <li>Petr Kozelka provides <a
3921 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue
3922 libxml2</a> with Kylix, Delphi and other Pascal compilers.</li>
3923 <li>Uwe Fechner also provides <a
3924 href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a DOM2
3925 implementation for Kylix2/D5/D6 from Borland.</li>
3926 <li>There is <a href="http://libxml.rubyforge.org/">bindings for Ruby</a>
3927 and libxml2 bindings are also available in Ruby through the <a
3928 href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a> module
3929 maintained by Tobias Peters.</li>
3930 <li>Steve Ball and contributors maintains <a
3931 href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings for
3933 <li>libxml2 and libxslt are the default XML libraries for PHP5.</li>
3934 <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a> is
3935 an effort to create a 100% JAXP-compatible Java wrapper for libxml2 and
3936 libxslt as part of GNU ClasspathX project.</li>
3937 <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look for
3938 <a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li>
3940 href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a>
3942 href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLib
3943 osax</a>. This is an osax for Mac OS X with a set of commands to
3944 implement in AppleScript the XML DOM, XPATH and XSLT. Also includes
3945 commands for Property-lists (Apple's fast lookup table XML format.)</li>
3946 <li>Francesco Montorsi developped <a
3947 href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a>
3948 wrappers that interface libxml2, allowing wxWidgets applications to
3949 load/save/edit XML instances.</li>
3952 <p>The distribution includes a set of Python bindings, which are guaranteed
3953 to be maintained as part of the library in the future, though the Python
3954 interface have not yet reached the completeness of the C API.</p>
3956 <p>Note that some of the Python purist dislike the default set of Python
3957 bindings, rather than complaining I suggest they have a look at <a
3958 href="http://lxml.de/">lxml the more pythonic bindings for libxml2
3959 and libxslt</a> and <a
3960 href="http://lxml.de/mailinglist/">check the mailing-list</a>.</p>
3962 <p><a href="mailto:stephane.bidoul@softwareag.com">Stéphane Bidoul</a>
3963 maintains <a href="http://users.skynet.be/sbi/libxml-python/">a Windows port
3964 of the Python bindings</a>.</p>
3966 <p>Note to people interested in building bindings, the API is formalized as
3967 <a href="libxml2-api.xml">an XML API description file</a> which allows to
3968 automate a large part of the Python bindings, this includes function
3969 descriptions, enums, structures, typedefs, etc... The Python script used to
3970 build the bindings is python/generator.py in the source distribution.</p>
3972 <p>To install the Python bindings there are 2 options:</p>
3974 <li>If you use an RPM based distribution, simply install the <a
3975 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-python
3976 RPM</a> (and if needed the <a
3977 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-python
3979 <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-python
3980 module distribution</a> corresponding to your installed version of
3981 libxml2 and libxslt. Note that to install it you will need both libxml2
3982 and libxslt installed and run "python setup.py build install" in the
3986 <p>The distribution includes a set of examples and regression tests for the
3987 python bindings in the <code>python/tests</code> directory. Here are some
3988 excerpts from those tests:</p>
3992 <p>This is a basic test of the file interface and DOM navigation:</p>
3993 <pre>import libxml2, sys
3995 doc = libxml2.parseFile("tst.xml")
3996 if doc.name != "tst.xml":
3997 print "doc.name failed"
4000 if root.name != "doc":
4001 print "root.name failed"
4003 child = root.children
4004 if child.name != "foo":
4005 print "child.name failed"
4009 <p>The Python module is called libxml2; parseFile is the equivalent of
4010 xmlParseFile (most of the bindings are automatically generated, and the xml
4011 prefix is removed and the casing convention are kept). All node seen at the
4012 binding level share the same subset of accessors:</p>
4014 <li><code>name</code> : returns the node name</li>
4015 <li><code>type</code> : returns a string indicating the node type</li>
4016 <li><code>content</code> : returns the content of the node, it is based on
4017 xmlNodeGetContent() and hence is recursive.</li>
4018 <li><code>parent</code> , <code>children</code>, <code>last</code>,
4019 <code>next</code>, <code>prev</code>, <code>doc</code>,
4020 <code>properties</code>: pointing to the associated element in the tree,
4021 those may return None in case no such link exists.</li>
4024 <p>Also note the need to explicitly deallocate documents with freeDoc() .
4025 Reference counting for libxml2 trees would need quite a lot of work to
4026 function properly, and rather than risk memory leaks if not implemented
4027 correctly it sounds safer to have an explicit function to free a tree. The
4028 wrapper python objects like doc, root or child are them automatically garbage
4031 <h3>validate.py:</h3>
4033 <p>This test check the validation interfaces and redirection of error
4037 #deactivate error messages from the validation
4038 def noerr(ctx, str):
4041 libxml2.registerErrorHandler(noerr, None)
4043 ctxt = libxml2.createFileParserCtxt("invalid.xml")
4045 ctxt.parseDocument()
4047 valid = ctxt.isValid()
4050 print "validity check failed"</pre>
4052 <p>The first thing to notice is the call to registerErrorHandler(), it
4053 defines a new error handler global to the library. It is used to avoid seeing
4054 the error messages when trying to validate the invalid document.</p>
4056 <p>The main interest of that test is the creation of a parser context with
4057 createFileParserCtxt() and how the behaviour can be changed before calling
4058 parseDocument() . Similarly the information resulting from the parsing phase
4059 is also available using context methods.</p>
4061 <p>Contexts like nodes are defined as class and the libxml2 wrappers maps the
4062 C function interfaces in terms of objects method as much as possible. The
4063 best to get a complete view of what methods are supported is to look at the
4064 libxml2.py module containing all the wrappers.</p>
4068 <p>This test show how to activate the push parser interface:</p>
4071 ctxt = libxml2.createPushParser(None, "<foo", 4, "test.xml")
4072 ctxt.parseChunk("/>", 2, 1)
4077 <p>The context is created with a special call based on the
4078 xmlCreatePushParser() from the C library. The first argument is an optional
4079 SAX callback object, then the initial set of data, the length and the name of
4080 the resource in case URI-References need to be computed by the parser.</p>
4082 <p>Then the data are pushed using the parseChunk() method, the last call
4083 setting the third argument terminate to 1.</p>
4085 <h3>pushSAX.py:</h3>
4087 <p>this test show the use of the event based parsing interfaces. In this case
4088 the parser does not build a document, but provides callback information as
4089 the parser makes progresses analyzing the data being provided:</p>
4094 def startDocument(self):
4096 log = log + "startDocument:"
4098 def endDocument(self):
4100 log = log + "endDocument:"
4102 def startElement(self, tag, attrs):
4104 log = log + "startElement %s %s:" % (tag, attrs)
4106 def endElement(self, tag):
4108 log = log + "endElement %s:" % (tag)
4110 def characters(self, data):
4112 log = log + "characters: %s:" % (data)
4114 def warning(self, msg):
4116 log = log + "warning: %s:" % (msg)
4118 def error(self, msg):
4120 log = log + "error: %s:" % (msg)
4122 def fatalError(self, msg):
4124 log = log + "fatalError: %s:" % (msg)
4126 handler = callback()
4128 ctxt = libxml2.createPushParser(handler, "<foo", 4, "test.xml")
4129 chunk = " url='tst'>b"
4130 ctxt.parseChunk(chunk, len(chunk), 0)
4131 chunk = "ar</foo>"
4132 ctxt.parseChunk(chunk, len(chunk), 1)
4134 reference = "startDocument:startElement foo {'url': 'tst'}:" + \
4135 "characters: bar:endElement foo:endDocument:"
4136 if log != reference:
4137 print "Error got: %s" % log
4138 print "Expected: %s" % reference</pre>
4140 <p>The key object in that test is the handler, it provides a number of entry
4141 points which can be called by the parser as it makes progresses to indicate
4142 the information set obtained. The full set of callback is larger than what
4143 the callback class in that specific example implements (see the SAX
4144 definition for a complete list). The wrapper will only call those supplied by
4145 the object when activated. The startElement receives the names of the element
4146 and a dictionary containing the attributes carried by this element.</p>
4148 <p>Also note that the reference string generated from the callback shows a
4149 single character call even though the string "bar" is passed to the parser
4150 from 2 different call to parseChunk()</p>
4154 <p>This is a basic test of XPath wrappers support</p>
4157 doc = libxml2.parseFile("tst.xml")
4158 ctxt = doc.xpathNewContext()
4159 res = ctxt.xpathEval("//*")
4161 print "xpath query: wrong node set size"
4163 if res[0].name != "doc" or res[1].name != "foo":
4164 print "xpath query: wrong node set value"
4167 ctxt.xpathFreeContext()</pre>
4169 <p>This test parses a file, then create an XPath context to evaluate XPath
4170 expression on it. The xpathEval() method execute an XPath query and returns
4171 the result mapped in a Python way. String and numbers are natively converted,
4172 and node sets are returned as a tuple of libxml2 Python nodes wrappers. Like
4173 the document, the XPath context need to be freed explicitly, also not that
4174 the result of the XPath query may point back to the document tree and hence
4175 the document must be freed after the result of the query is used.</p>
4177 <h3>xpathext.py:</h3>
4179 <p>This test shows how to extend the XPath engine with functions written in
4186 doc = libxml2.parseFile("tst.xml")
4187 ctxt = doc.xpathNewContext()
4188 libxml2.registerXPathFunction(ctxt._o, "foo", None, foo)
4189 res = ctxt.xpathEval("foo(1)")
4191 print "xpath extension failure"
4193 ctxt.xpathFreeContext()</pre>
4195 <p>Note how the extension function is registered with the context (but that
4196 part is not yet finalized, this may change slightly in the future).</p>
4198 <h3>tstxpath.py:</h3>
4200 <p>This test is similar to the previous one but shows how the extension
4201 function can access the XPath evaluation context:</p>
4202 <pre>def foo(ctx, x):
4206 # test that access to the XPath evaluation contexts
4208 pctxt = libxml2.xpathParserContext(_obj=ctx)
4209 ctxt = pctxt.context()
4210 called = ctxt.function()
4213 <p>All the interfaces around the XPath parser(or rather evaluation) context
4214 are not finalized, but it should be sufficient to do contextual work at the
4215 evaluation point.</p>
4217 <h3>Memory debugging:</h3>
4219 <p>last but not least, all tests starts with the following prologue:</p>
4220 <pre>#memory debug specific
4221 libxml2.debugMemory(1)</pre>
4223 <p>and ends with the following epilogue:</p>
4224 <pre>#memory debug specific
4225 libxml2.cleanupParser()
4226 if libxml2.debugMemory(1) == 0:
4229 print "Memory leak %d bytes" % (libxml2.debugMemory(1))
4230 libxml2.dumpMemory()</pre>
4232 <p>Those activate the memory debugging interface of libxml2 where all
4233 allocated block in the library are tracked. The prologue then cleans up the
4234 library state and checks that all allocated memory has been freed. If not it
4235 calls dumpMemory() which saves that list in a <code>.memdump</code> file.</p>
4237 <h2><a name="architecture">libxml2 architecture</a></h2>
4239 <p>Libxml2 is made of multiple components; some of them are optional, and
4240 most of the block interfaces are public. The main components are:</p>
4242 <li>an Input/Output layer</li>
4243 <li>FTP and HTTP client layers (optional)</li>
4244 <li>an Internationalization layer managing the encodings support</li>
4245 <li>a URI module</li>
4246 <li>the XML parser and its basic SAX interface</li>
4247 <li>an HTML parser using the same SAX interface (optional)</li>
4248 <li>a SAX tree module to build an in-memory DOM representation</li>
4249 <li>a tree module to manipulate the DOM representation</li>
4250 <li>a validation module using the DOM representation (optional)</li>
4251 <li>an XPath module for global lookup in a DOM representation
4253 <li>a debug module (optional)</li>
4256 <p>Graphically this gives the following:</p>
4258 <p><img src="libxml.gif" alt="a graphical view of the various"></p>
4262 <h2><a name="tree">The tree output</a></h2>
4264 <p>The parser returns a tree built during the document analysis. The value
4265 returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an
4266 <strong>xmlDoc</strong> structure). This structure contains information such
4267 as the file name, the document type, and a <strong>children</strong> pointer
4268 which is the root of the document (or more exactly the first child under the
4269 root which is the document). The tree is made of <strong>xmlNode</strong>s,
4270 chained in double-linked lists of siblings and with a children<->parent
4271 relationship. An xmlNode can also carry properties (a chain of xmlAttr
4272 structures). An attribute may have a value which is a list of TEXT or
4273 ENTITY_REF nodes.</p>
4275 <p>Here is an example (erroneous with respect to the XML spec since there
4276 should be only one ELEMENT under the root):</p>
4278 <p><img src="structure.gif" alt=" structure.gif "></p>
4280 <p>In the source package there is a small program (not installed by default)
4281 called <strong>xmllint</strong> which parses XML files given as argument and
4282 prints them back as parsed. This is useful for detecting errors both in XML
4283 code and in the XML parser itself. It has an option <strong>--debug</strong>
4284 which prints the actual in-memory structure of the document; here is the
4285 result with the <a href="#example">example</a> given before:</p>
4292 content=gnome is great
4300 content=Welcome to Gnome
4304 content=The Linux adventure
4307 content=bla bla bla ...
4316 <p>This should be useful for learning the internal representation model.</p>
4318 <h2><a name="interface">The SAX interface</a></h2>
4320 <p>Sometimes the DOM tree output is just too large to fit reasonably into
4321 memory. In that case (and if you don't expect to save back the XML document
4322 loaded using libxml), it's better to use the SAX interface of libxml. SAX is
4323 a <strong>callback-based interface</strong> to the parser. Before parsing,
4324 the application layer registers a customized set of callbacks which are
4325 called by the library as it progresses through the XML input.</p>
4327 <p>To get more detailed step-by-step guidance on using the SAX interface of
4329 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">nice
4330 documentation</a>.written by <a href="mailto:james@daa.com.au">James
4333 <p>You can debug the SAX behaviour by using the <strong>testSAX</strong>
4334 program located in the gnome-xml module (it's usually not shipped in the
4335 binary packages of libxml, but you can find it in the tar source
4336 distribution). Here is the sequence of callbacks that would be reported by
4337 testSAX when parsing the example XML document shown earlier:</p>
4338 <pre>SAX.setDocumentLocator()
4341 SAX.startElement(EXAMPLE, prop1='gnome is great', prop2='&amp; linux too')
4342 SAX.characters( , 3)
4343 SAX.startElement(head)
4344 SAX.characters( , 4)
4345 SAX.startElement(title)
4346 SAX.characters(Welcome to Gnome, 16)
4347 SAX.endElement(title)
4348 SAX.characters( , 3)
4349 SAX.endElement(head)
4350 SAX.characters( , 3)
4351 SAX.startElement(chapter)
4352 SAX.characters( , 4)
4353 SAX.startElement(title)
4354 SAX.characters(The Linux adventure, 19)
4355 SAX.endElement(title)
4356 SAX.characters( , 4)
4358 SAX.characters(bla bla bla ..., 15)
4360 SAX.characters( , 4)
4361 SAX.startElement(image, href='linus.gif')
4362 SAX.endElement(image)
4363 SAX.characters( , 4)
4365 SAX.characters(..., 3)
4367 SAX.characters( , 3)
4368 SAX.endElement(chapter)
4369 SAX.characters( , 1)
4370 SAX.endElement(EXAMPLE)
4371 SAX.endDocument()</pre>
4373 <p>Most of the other interfaces of libxml2 are based on the DOM tree-building
4374 facility, so nearly everything up to the end of this document presupposes the
4375 use of the standard DOM tree build. Note that the DOM tree itself is built by
4376 a set of registered default callbacks, without internal specific
4379 <h2><a name="Validation">Validation & DTDs</a></h2>
4381 <p>Table of Content:</p>
4383 <li><a href="#General5">General overview</a></li>
4384 <li><a href="#definition">The definition</a></li>
4385 <li><a href="#Simple">Simple rules</a>
4387 <li><a href="#reference">How to reference a DTD from a document</a></li>
4388 <li><a href="#Declaring">Declaring elements</a></li>
4389 <li><a href="#Declaring1">Declaring attributes</a></li>
4392 <li><a href="#Some">Some examples</a></li>
4393 <li><a href="#validate">How to validate</a></li>
4394 <li><a href="#Other">Other resources</a></li>
4397 <h3><a name="General5">General overview</a></h3>
4399 <p>Well what is validation and what is a DTD ?</p>
4401 <p>DTD is the acronym for Document Type Definition. This is a description of
4402 the content for a family of XML files. This is part of the XML 1.0
4403 specification, and allows one to describe and verify that a given document
4404 instance conforms to the set of rules detailing its structure and content.</p>
4406 <p>Validation is the process of checking a document against a DTD (more
4407 generally against a set of construction rules).</p>
4409 <p>The validation process and building DTDs are the two most difficult parts
4410 of the XML life cycle. Briefly a DTD defines all the possible elements to be
4411 found within your document, what is the formal shape of your document tree
4412 (by defining the allowed content of an element; either text, a regular
4413 expression for the allowed list of children, or mixed content i.e. both text
4414 and children). The DTD also defines the valid attributes for all elements and
4415 the types of those attributes.</p>
4417 <h3><a name="definition1">The definition</a></h3>
4419 <p>The <a href="http://www.w3.org/TR/REC-xml">W3C XML Recommendation</a> (<a
4420 href="http://www.xml.com/axml/axml.html">Tim Bray's annotated version of
4423 <li><a href="http://www.w3.org/TR/REC-xml#elemdecls">Declaring
4425 <li><a href="http://www.w3.org/TR/REC-xml#attdecls">Declaring
4429 <p>(unfortunately) all this is inherited from the SGML world, the syntax is
4432 <h3><a name="Simple1">Simple rules</a></h3>
4434 <p>Writing DTDs can be done in many ways. The rules to build them if you need
4435 something permanent or something which can evolve over time can be radically
4436 different. Really complex DTDs like DocBook ones are flexible but quite
4437 harder to design. I will just focus on DTDs for a formats with a fixed simple
4438 structure. It is just a set of basic rules, and definitely not exhaustive nor
4439 usable for complex DTD design.</p>
4441 <h4><a name="reference1">How to reference a DTD from a document</a>:</h4>
4443 <p>Assuming the top element of the document is <code>spec</code> and the dtd
4444 is placed in the file <code>mydtd</code> in the subdirectory
4445 <code>dtds</code> of the directory from where the document were loaded:</p>
4447 <p><code><!DOCTYPE spec SYSTEM "dtds/mydtd"></code></p>
4451 <li>The system string is actually an URI-Reference (as defined in <a
4452 href="http://www.ietf.org/rfc/rfc2396.txt">RFC 2396</a>) so you can use a
4453 full URL string indicating the location of your DTD on the Web. This is a
4454 really good thing to do if you want others to validate your document.</li>
4455 <li>It is also possible to associate a <code>PUBLIC</code> identifier (a
4456 magic string) so that the DTD is looked up in catalogs on the client side
4457 without having to locate it on the web.</li>
4458 <li>A DTD contains a set of element and attribute declarations, but they
4459 don't define what the root of the document should be. This is explicitly
4460 told to the parser/validator as the first element of the
4461 <code>DOCTYPE</code> declaration.</li>
4464 <h4><a name="Declaring2">Declaring elements</a>:</h4>
4466 <p>The following declares an element <code>spec</code>:</p>
4468 <p><code><!ELEMENT spec (front, body, back?)></code></p>
4470 <p>It also expresses that the spec element contains one <code>front</code>,
4471 one <code>body</code> and one optional <code>back</code> children elements in
4472 this order. The declaration of one element of the structure and its content
4473 are done in a single declaration. Similarly the following declares
4474 <code>div1</code> elements:</p>
4476 <p><code><!ELEMENT div1 (head, (p | list | note)*, div2?)></code></p>
4478 <p>which means div1 contains one <code>head</code> then a series of optional
4479 <code>p</code>, <code>list</code>s and <code>note</code>s and then an
4480 optional <code>div2</code>. And last but not least an element can contain
4483 <p><code><!ELEMENT b (#PCDATA)></code></p>
4485 <p><code>b</code> contains text or being of mixed content (text and elements
4486 in no particular order):</p>
4488 <p><code><!ELEMENT p (#PCDATA|a|ul|b|i|em)*></code></p>
4490 <p><code>p </code>can contain text or <code>a</code>, <code>ul</code>,
4491 <code>b</code>, <code>i </code>or <code>em</code> elements in no particular
4494 <h4><a name="Declaring1">Declaring attributes</a>:</h4>
4496 <p>Again the attributes declaration includes their content definition:</p>
4498 <p><code><!ATTLIST termdef name CDATA #IMPLIED></code></p>
4500 <p>means that the element <code>termdef</code> can have a <code>name</code>
4501 attribute containing text (<code>CDATA</code>) and which is optional
4502 (<code>#IMPLIED</code>). The attribute value can also be defined within a
4505 <p><code><!ATTLIST list type (bullets|ordered|glossary)
4506 "ordered"></code></p>
4508 <p>means <code>list</code> element have a <code>type</code> attribute with 3
4509 allowed values "bullets", "ordered" or "glossary" and which default to
4510 "ordered" if the attribute is not explicitly specified.</p>
4512 <p>The content type of an attribute can be text (<code>CDATA</code>),
4513 anchor/reference/references
4514 (<code>ID</code>/<code>IDREF</code>/<code>IDREFS</code>), entity(ies)
4515 (<code>ENTITY</code>/<code>ENTITIES</code>) or name(s)
4516 (<code>NMTOKEN</code>/<code>NMTOKENS</code>). The following defines that a
4517 <code>chapter</code> element can have an optional <code>id</code> attribute
4518 of type <code>ID</code>, usable for reference from attribute of type
4521 <p><code><!ATTLIST chapter id ID #IMPLIED></code></p>
4523 <p>The last value of an attribute definition can be <code>#REQUIRED
4524 </code>meaning that the attribute has to be given, <code>#IMPLIED</code>
4525 meaning that it is optional, or the default value (possibly prefixed by
4526 <code>#FIXED</code> if it is the only allowed).</p>
4530 <li>Usually the attributes pertaining to a given element are declared in a
4531 single expression, but it is just a convention adopted by a lot of DTD
4533 <pre><!ATTLIST termdef
4535 name CDATA #IMPLIED></pre>
4536 <p>The previous construct defines both <code>id</code> and
4537 <code>name</code> attributes for the element <code>termdef</code>.</p>
4541 <h3><a name="Some1">Some examples</a></h3>
4543 <p>The directory <code>test/valid/dtds/</code> in the libxml2 distribution
4544 contains some complex DTD examples. The example in the file
4545 <code>test/valid/dia.xml</code> shows an XML file where the simple DTD is
4546 directly included within the document.</p>
4548 <h3><a name="validate1">How to validate</a></h3>
4550 <p>The simplest way is to use the xmllint program included with libxml. The
4551 <code>--valid</code> option turns-on validation of the files given as input.
4552 For example the following validates a copy of the first revision of the XML
4553 1.0 specification:</p>
4555 <p><code>xmllint --valid --noout test/valid/REC-xml-19980210.xml</code></p>
4557 <p>the -- noout is used to disable output of the resulting tree.</p>
4559 <p>The <code>--dtdvalid dtd</code> allows validation of the document(s)
4560 against a given DTD.</p>
4562 <p>Libxml2 exports an API to handle DTDs and validation, check the <a
4563 href="http://xmlsoft.org/html/libxml-valid.html">associated
4564 description</a>.</p>
4566 <h3><a name="Other1">Other resources</a></h3>
4568 <p>DTDs are as old as SGML. So there may be a number of examples on-line, I
4569 will just list one for now, others pointers welcome:</p>
4571 <li><a href="http://www.xml101.com:8081/dtd/">XML-101 DTD</a></li>
4574 <p>I suggest looking at the examples found under test/valid/dtd and any of
4575 the large number of books available on XML. The dia example in test/valid
4576 should be both simple and complete enough to allow you to build your own.</p>
4580 <h2><a name="Memory">Memory Management</a></h2>
4582 <p>Table of Content:</p>
4584 <li><a href="#General3">General overview</a></li>
4585 <li><a href="#setting">Setting libxml2 set of memory routines</a></li>
4586 <li><a href="#cleanup">Cleaning up after using the library</a></li>
4587 <li><a href="#Debugging">Debugging routines</a></li>
4588 <li><a href="#General4">General memory requirements</a></li>
4589 <li><a href="#Compacting">Returning memory to the kernel</a></li>
4592 <h3><a name="General3">General overview</a></h3>
4594 <p>The module <code><a
4595 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlmemory.h</a></code>
4596 provides the interfaces to the libxml2 memory system:</p>
4598 <li>libxml2 does not use the libc memory allocator directly but xmlFree(),
4599 xmlMalloc() and xmlRealloc()</li>
4600 <li>those routines can be reallocated to a specific set of routine, by
4601 default the libc ones i.e. free(), malloc() and realloc()</li>
4602 <li>the xmlmemory.c module includes a set of debugging routine</li>
4605 <h3><a name="setting">Setting libxml2 set of memory routines</a></h3>
4607 <p>It is sometimes useful to not use the default memory allocator, either for
4608 debugging, analysis or to implement a specific behaviour on memory management
4609 (like on embedded systems). Two function calls are available to do so:</p>
4611 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemGet
4612 ()</a> which return the current set of functions in use by the parser</li>
4614 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemSetup()</a>
4615 which allow to set up a new set of memory allocation functions</li>
4618 <p>Of course a call to xmlMemSetup() should probably be done before calling
4619 any other libxml2 routines (unless you are sure your allocations routines are
4622 <h3><a name="cleanup">Cleaning up after using the library</a></h3>
4624 <p>Libxml2 is not stateless, there is a few set of memory structures needing
4625 allocation before the parser is fully functional (some encoding structures
4626 for example). This also mean that once parsing is finished there is a tiny
4627 amount of memory (a few hundred bytes) which can be recollected if you don't
4628 reuse the library or any document built with it:</p>
4630 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlCleanupParser
4631 ()</a> is a centralized routine to free the library state and data. Note
4632 that it won't deallocate any produced tree if any (use the xmlFreeDoc()
4633 and related routines for this). This should be called only when the library
4634 is not used anymore.</li>
4635 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlInitParser
4636 ()</a> is the dual routine allowing to preallocate the parsing state
4637 which can be useful for example to avoid initialization reentrancy
4638 problems when using libxml2 in multithreaded applications</li>
4641 <p>Generally xmlCleanupParser() is safe assuming no parsing is ongoing and
4642 no document is still being used, if needed the state will be rebuild at the
4643 next invocation of parser routines (or by xmlInitParser()), but be careful
4644 of the consequences in multithreaded applications.</p>
4646 <h3><a name="Debugging">Debugging routines</a></h3>
4648 <p>When configured using --with-mem-debug flag (off by default), libxml2 uses
4649 a set of memory allocation debugging routines keeping track of all allocated
4650 blocks and the location in the code where the routine was called. A couple of
4651 other debugging routines allow to dump the memory allocated infos to a file
4652 or call a specific routine when a given block number is allocated:</p>
4655 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMallocLoc()</a>
4657 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlReallocLoc()</a>
4659 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemStrdupLoc()</a>
4660 are the memory debugging replacement allocation routines</li>
4661 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemoryDump
4662 ()</a> dumps all the information about the allocated memory block lefts
4663 in the <code>.memdump</code> file</li>
4666 <p>When developing libxml2 memory debug is enabled, the tests programs call
4667 xmlMemoryDump () and the "make test" regression tests will check for any
4668 memory leak during the full regression test sequence, this helps a lot
4669 ensuring that libxml2 does not leak memory and bullet proof memory
4670 allocations use (some libc implementations are known to be far too permissive
4671 resulting in major portability problems!).</p>
4673 <p>If the .memdump reports a leak, it displays the allocation function and
4674 also tries to give some information about the content and structure of the
4675 allocated blocks left. This is sufficient in most cases to find the culprit,
4676 but not always. Assuming the allocation problem is reproducible, it is
4677 possible to find more easily:</p>
4679 <li>write down the block number xxxx not allocated</li>
4680 <li>export the environment variable XML_MEM_BREAKPOINT=xxxx , the easiest
4681 when using GDB is to simply give the command
4682 <p><code>set environment XML_MEM_BREAKPOINT xxxx</code></p>
4683 <p>before running the program.</p>
4685 <li>run the program under a debugger and set a breakpoint on
4686 xmlMallocBreakpoint() a specific function called when this precise block
4688 <li>when the breakpoint is reached you can then do a fine analysis of the
4689 allocation an step to see the condition resulting in the missing
4693 <p>I used to use a commercial tool to debug libxml2 memory problems but after
4694 noticing that it was not detecting memory leaks that simple mechanism was
4695 used and proved extremely efficient until now. Lately I have also used <a
4696 href="http://developer.kde.org/~sewardj/">valgrind</a> with quite some
4697 success, it is tied to the i386 architecture since it works by emulating the
4698 processor and instruction set, it is slow but extremely efficient, i.e. it
4699 spot memory usage errors in a very precise way.</p>
4701 <h3><a name="General4">General memory requirements</a></h3>
4703 <p>How much libxml2 memory require ? It's hard to tell in average it depends
4704 of a number of things:</p>
4706 <li>the parser itself should work in a fixed amount of memory, except for
4707 information maintained about the stacks of names and entities locations.
4708 The I/O and encoding handlers will probably account for a few KBytes.
4709 This is true for both the XML and HTML parser (though the HTML parser
4710 need more state).</li>
4711 <li>If you are generating the DOM tree then memory requirements will grow
4712 nearly linear with the size of the data. In general for a balanced
4713 textual document the internal memory requirement is about 4 times the
4714 size of the UTF8 serialization of this document (example the XML-1.0
4715 recommendation is a bit more of 150KBytes and takes 650KBytes of main
4716 memory when parsed). Validation will add a amount of memory required for
4717 maintaining the external Dtd state which should be linear with the
4718 complexity of the content model defined by the Dtd</li>
4719 <li>If you need to work with fixed memory requirements or don't need the
4720 full DOM tree then using the <a href="xmlreader.html">xmlReader
4721 interface</a> is probably the best way to proceed, it still allows to
4722 validate or operate on subset of the tree if needed.</li>
4723 <li>If you don't care about the advanced features of libxml2 like
4724 validation, DOM, XPath or XPointer, don't use entities, need to work with
4725 fixed memory requirements, and try to get the fastest parsing possible
4726 then the SAX interface should be used, but it has known restrictions.</li>
4730 <h3><a name="Compacting">Returning memory to the kernel</a></h3>
4732 <p>You may encounter that your process using libxml2 does not have a
4733 reduced memory usage although you freed the trees. This is because
4734 libxml2 allocates memory in a number of small chunks. When freeing one
4735 of those chunks, the OS may decide that giving this little memory back
4736 to the kernel will cause too much overhead and delay the operation. As
4737 all chunks are this small, they get actually freed but not returned to
4738 the kernel. On systems using glibc, there is a function call
4739 "malloc_trim" from malloc.h which does this missing operation (note that
4740 it is allowed to fail). Thus, after freeing your tree you may simply try
4741 "malloc_trim(0);" to really get the memory back. If your OS does not
4742 provide malloc_trim, try searching for a similar function.</p>
4745 <h2><a name="Encodings">Encodings support</a></h2>
4747 <p>If you are not really familiar with Internationalization (usual shortcut
4748 is I18N) , Unicode, characters and glyphs, I suggest you read a <a
4749 href="http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode">presentation</a>
4750 by Tim Bray on Unicode and why you should care about it.</p>
4752 <p>If you don't understand why <b>it does not make sense to have a string
4753 without knowing what encoding it uses</b>, then as Joel Spolsky said <a
4754 href="http://www.joelonsoftware.com/articles/Unicode.html">please do not
4755 write another line of code until you finish reading that article.</a>. It is
4756 a prerequisite to understand this page, and avoid a lot of problems with
4757 libxml2, XML or text processing in general.</p>
4759 <p>Table of Content:</p>
4761 <li><a href="encoding.html#What">What does internationalization support
4763 <li><a href="encoding.html#internal">The internal encoding, how and
4765 <li><a href="encoding.html#implemente">How is it implemented ?</a></li>
4766 <li><a href="encoding.html#Default">Default supported encodings</a></li>
4767 <li><a href="encoding.html#extend">How to extend the existing
4771 <h3><a name="What">What does internationalization support mean ?</a></h3>
4773 <p>XML was designed from the start to allow the support of any character set
4774 by using Unicode. Any conformant XML parser has to support the UTF-8 and
4775 UTF-16 default encodings which can both express the full unicode ranges. UTF8
4776 is a variable length encoding whose greatest points are to reuse the same
4777 encoding for ASCII and to save space for Western encodings, but it is a bit
4778 more complex to handle in practice. UTF-16 use 2 bytes per character (and
4779 sometimes combines two pairs), it makes implementation easier, but looks a
4780 bit overkill for Western languages encoding. Moreover the XML specification
4781 allows the document to be encoded in other encodings at the condition that
4782 they are clearly labeled as such. For example the following is a wellformed
4783 XML document encoded in ISO-8859-1 and using accentuated letters that we
4784 French like for both markup and content:</p>
4785 <pre><?xml version="1.0" encoding="ISO-8859-1"?>
4786 <très>là </très></pre>
4788 <p>Having internationalization support in libxml2 means the following:</p>
4790 <li>the document is properly parsed</li>
4791 <li>information about it's encoding is saved</li>
4792 <li>it can be modified</li>
4793 <li>it can be saved in its original encoding</li>
4794 <li>it can also be saved in another encoding supported by libxml2 (for
4795 example straight UTF8 or even an ASCII form)</li>
4798 <p>Another very important point is that the whole libxml2 API, with the
4799 exception of a few routines to read with a specific encoding or save to a
4800 specific encoding, is completely agnostic about the original encoding of the
4803 <p>It should be noted too that the HTML parser embedded in libxml2 now obey
4804 the same rules too, the following document will be (as of 2.2.2) handled in
4805 an internationalized fashion by libxml2 too:</p>
4806 <pre><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
4807 "http://www.w3.org/TR/REC-html40/loose.dtd">
4808 <html lang="fr">
4810 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
4813 <p>W3C crée des standards pour le Web.</body>
4816 <h3><a name="internal">The internal encoding, how and why</a></h3>
4818 <p>One of the core decisions was to force all documents to be converted to a
4819 default internal encoding, and that encoding to be UTF-8, here are the
4820 rationales for those choices:</p>
4822 <li>keeping the native encoding in the internal form would force the libxml
4823 users (or the code associated) to be fully aware of the encoding of the
4824 original document, for examples when adding a text node to a document,
4825 the content would have to be provided in the document encoding, i.e. the
4826 client code would have to check it before hand, make sure it's conformant
4827 to the encoding, etc ... Very hard in practice, though in some specific
4828 cases this may make sense.</li>
4829 <li>the second decision was which encoding. From the XML spec only UTF8 and
4830 UTF16 really makes sense as being the two only encodings for which there
4831 is mandatory support. UCS-4 (32 bits fixed size encoding) could be
4832 considered an intelligent choice too since it's a direct Unicode mapping
4833 support. I selected UTF-8 on the basis of efficiency and compatibility
4834 with surrounding software:
4836 <li>UTF-8 while a bit more complex to convert from/to (i.e. slightly
4837 more costly to import and export CPU wise) is also far more compact
4838 than UTF-16 (and UCS-4) for a majority of the documents I see it used
4839 for right now (RPM RDF catalogs, advogato data, various configuration
4840 file formats, etc.) and the key point for today's computer
4841 architecture is efficient uses of caches. If one nearly double the
4842 memory requirement to store the same amount of data, this will trash
4843 caches (main memory/external caches/internal caches) and my take is
4844 that this harms the system far more than the CPU requirements needed
4845 for the conversion to UTF-8</li>
4846 <li>Most of libxml2 version 1 users were using it with straight ASCII
4847 most of the time, doing the conversion with an internal encoding
4848 requiring all their code to be rewritten was a serious show-stopper
4849 for using UTF-16 or UCS-4.</li>
4850 <li>UTF-8 is being used as the de-facto internal encoding standard for
4851 related code like the <a href="http://www.pango.org/">pango</a>
4852 upcoming Gnome text widget, and a lot of Unix code (yet another place
4853 where Unix programmer base takes a different approach from Microsoft
4854 - they are using UTF-16)</li>
4859 <p>What does this mean in practice for the libxml2 user:</p>
4861 <li>xmlChar, the libxml2 data type is a byte, those bytes must be assembled
4862 as UTF-8 valid strings. The proper way to terminate an xmlChar * string
4863 is simply to append 0 byte, as usual.</li>
4864 <li>One just need to make sure that when using chars outside the ASCII set,
4865 the values has been properly converted to UTF-8</li>
4868 <h3><a name="implemente">How is it implemented ?</a></h3>
4870 <p>Let's describe how all this works within libxml, basically the I18N
4871 (internationalization) support get triggered only during I/O operation, i.e.
4872 when reading a document or saving one. Let's look first at the reading
4875 <li>when a document is processed, we usually don't know the encoding, a
4876 simple heuristic allows to detect UTF-16 and UCS-4 from encodings where
4877 the ASCII range (0-0x7F) maps with ASCII</li>
4878 <li>the xml declaration if available is parsed, including the encoding
4879 declaration. At that point, if the autodetected encoding is different
4880 from the one declared a call to xmlSwitchEncoding() is issued.</li>
4881 <li>If there is no encoding declaration, then the input has to be in either
4882 UTF-8 or UTF-16, if it is not then at some point when processing the
4883 input, the converter/checker of UTF-8 form will raise an encoding error.
4884 You may end-up with a garbled document, or no document at all ! Example:
4885 <pre>~/XML -> ./xmllint err.xml
4886 err.xml:1: error: Input is not proper UTF-8, indicate encoding !
4887 <très>là </très>
4889 err.xml:1: error: Bytes: 0xE8 0x73 0x3E 0x6C
4890 <très>là </très>
4893 <li>xmlSwitchEncoding() does an encoding name lookup, canonicalize it, and
4894 then search the default registered encoding converters for that encoding.
4895 If it's not within the default set and iconv() support has been compiled
4896 it, it will ask iconv for such an encoder. If this fails then the parser
4897 will report an error and stops processing:
4898 <pre>~/XML -> ./xmllint err2.xml
4899 err2.xml:1: error: Unsupported encoding UnsupportedEnc
4900 <?xml version="1.0" encoding="UnsupportedEnc"?>
4903 <li>From that point the encoder processes progressively the input (it is
4904 plugged as a front-end to the I/O module) for that entity. It captures
4905 and converts on-the-fly the document to be parsed to UTF-8. The parser
4906 itself just does UTF-8 checking of this input and process it
4907 transparently. The only difference is that the encoding information has
4908 been added to the parsing context (more precisely to the input
4909 corresponding to this entity).</li>
4910 <li>The result (when using DOM) is an internal form completely in UTF-8
4911 with just an encoding information on the document node.</li>
4914 <p>Ok then what happens when saving the document (assuming you
4915 collected/built an xmlDoc DOM like structure) ? It depends on the function
4916 called, xmlSaveFile() will just try to save in the original encoding, while
4917 xmlSaveFileTo() and xmlSaveFileEnc() can optionally save to a given
4920 <li>if no encoding is given, libxml2 will look for an encoding value
4921 associated to the document and if it exists will try to save to that
4923 <p>otherwise everything is written in the internal form, i.e. UTF-8</p>
4925 <li>so if an encoding was specified, either at the API level or on the
4926 document, libxml2 will again canonicalize the encoding name, lookup for a
4927 converter in the registered set or through iconv. If not found the
4928 function will return an error code</li>
4929 <li>the converter is placed before the I/O buffer layer, as another kind of
4930 buffer, then libxml2 will simply push the UTF-8 serialization to through
4931 that buffer, which will then progressively be converted and pushed onto
4933 <li>It is possible that the converter code fails on some input, for example
4934 trying to push an UTF-8 encoded Chinese character through the UTF-8 to
4935 ISO-8859-1 converter won't work. Since the encoders are progressive they
4936 will just report the error and the number of bytes converted, at that
4937 point libxml2 will decode the offending character, remove it from the
4938 buffer and replace it with the associated charRef encoding &#123; and
4939 resume the conversion. This guarantees that any document will be saved
4940 without losses (except for markup names where this is not legal, this is
4941 a problem in the current version, in practice avoid using non-ascii
4942 characters for tag or attribute names). A special "ascii" encoding name
4943 is used to save documents to a pure ascii form can be used when
4944 portability is really crucial</li>
4947 <p>Here are a few examples based on the same test document and assumin a
4948 terminal using ISO-8859-1 as the text encoding:</p>
4949 <pre>~/XML -> ./xmllint isolat1
4950 <?xml version="1.0" encoding="ISO-8859-1"?>
4951 <très>là</très>
4952 ~/XML -> ./xmllint --encode UTF-8 isolat1
4953 <?xml version="1.0" encoding="UTF-8"?>
4954 <très>là </très>
4957 <p>The same processing is applied (and reuse most of the code) for HTML I18N
4958 processing. Looking up and modifying the content encoding is a bit more
4959 difficult since it is located in a <meta> tag under the <head>,
4960 so a couple of functions htmlGetMetaEncoding() and htmlSetMetaEncoding() have
4961 been provided. The parser also attempts to switch encoding on the fly when
4962 detecting such a tag on input. Except for that the processing is the same
4963 (and again reuses the same code).</p>
4965 <h3><a name="Default">Default supported encodings</a></h3>
4967 <p>libxml2 has a set of default converters for the following encodings
4968 (located in encoding.c):</p>
4970 <li>UTF-8 is supported by default (null handlers)</li>
4971 <li>UTF-16, both little and big endian</li>
4972 <li>ISO-Latin-1 (ISO-8859-1) covering most western languages</li>
4973 <li>ASCII, useful mostly for saving</li>
4974 <li>HTML, a specific handler for the conversion of UTF-8 to ASCII with HTML
4975 predefined entities like &copy; for the Copyright sign.</li>
4978 <p>More over when compiled on an Unix platform with iconv support the full
4979 set of encodings supported by iconv can be instantly be used by libxml. On a
4980 linux machine with glibc-2.1 the list of supported encodings and aliases fill
4981 3 full pages, and include UCS-4, the full set of ISO-Latin encodings, and the
4982 various Japanese ones.</p>
4984 <p>To convert from the UTF-8 values returned from the API to another encoding
4985 then it is possible to use the function provided from <a
4986 href="html/libxml-encoding.html">the encoding module</a> like <a
4987 href="html/libxml-encoding.html#UTF8Toisolat1">UTF8Toisolat1</a>, or use the
4989 href="http://www.opengroup.org/onlinepubs/009695399/functions/iconv.html">iconv()</a>
4992 <h4>Encoding aliases</h4>
4994 <p>From 2.2.3, libxml2 has support to register encoding names aliases. The
4995 goal is to be able to parse document whose encoding is supported but where
4996 the name differs (for example from the default set of names accepted by
4997 iconv). The following functions allow to register and handle new aliases for
4998 existing encodings. Once registered libxml2 will automatically lookup the
4999 aliases when handling a document:</p>
5001 <li>int xmlAddEncodingAlias(const char *name, const char *alias);</li>
5002 <li>int xmlDelEncodingAlias(const char *alias);</li>
5003 <li>const char * xmlGetEncodingAlias(const char *alias);</li>
5004 <li>void xmlCleanupEncodingAliases(void);</li>
5007 <h3><a name="extend">How to extend the existing support</a></h3>
5009 <p>Well adding support for new encoding, or overriding one of the encoders
5010 (assuming it is buggy) should not be hard, just write input and output
5011 conversion routines to/from UTF-8, and register them using
5012 xmlNewCharEncodingHandler(name, xxxToUTF8, UTF8Toxxx), and they will be
5013 called automatically if the parser(s) encounter such an encoding name
5014 (register it uppercase, this will help). The description of the encoders,
5015 their arguments and expected return values are described in the encoding.h
5018 <h2><a name="IO">I/O Interfaces</a></h2>
5020 <p>Table of Content:</p>
5022 <li><a href="#General1">General overview</a></li>
5023 <li><a href="#basic">The basic buffer type</a></li>
5024 <li><a href="#Input">Input I/O handlers</a></li>
5025 <li><a href="#Output">Output I/O handlers</a></li>
5026 <li><a href="#entities">The entities loader</a></li>
5027 <li><a href="#Example2">Example of customized I/O</a></li>
5030 <h3><a name="General1">General overview</a></h3>
5032 <p>The module <code><a
5033 href="http://xmlsoft.org/html/libxml-xmlio.html">xmlIO.h</a></code> provides
5034 the interfaces to the libxml2 I/O system. This consists of 4 main parts:</p>
5036 <li>Entities loader, this is a routine which tries to fetch the entities
5037 (files) based on their PUBLIC and SYSTEM identifiers. The default loader
5038 don't look at the public identifier since libxml2 do not maintain a
5039 catalog. You can redefine you own entity loader by using
5040 <code>xmlGetExternalEntityLoader()</code> and
5041 <code>xmlSetExternalEntityLoader()</code>. <a href="#entities">Check the
5043 <li>Input I/O buffers which are a commodity structure used by the parser(s)
5044 input layer to handle fetching the information to feed the parser. This
5045 provides buffering and is also a placeholder where the encoding
5046 converters to UTF8 are piggy-backed.</li>
5047 <li>Output I/O buffers are similar to the Input ones and fulfill similar
5048 task but when generating a serialization from a tree.</li>
5049 <li>A mechanism to register sets of I/O callbacks and associate them with
5050 specific naming schemes like the protocol part of the URIs.
5051 <p>This affect the default I/O operations and allows to use specific I/O
5052 handlers for certain names.</p>
5056 <p>The general mechanism used when loading http://rpmfind.net/xml.html for
5057 example in the HTML parser is the following:</p>
5059 <li>The default entity loader calls <code>xmlNewInputFromFile()</code> with
5060 the parsing context and the URI string.</li>
5061 <li>the URI string is checked against the existing registered handlers
5062 using their match() callback function, if the HTTP module was compiled
5063 in, it is registered and its match() function will succeeds</li>
5064 <li>the open() function of the handler is called and if successful will
5065 return an I/O Input buffer</li>
5066 <li>the parser will the start reading from this buffer and progressively
5067 fetch information from the resource, calling the read() function of the
5068 handler until the resource is exhausted</li>
5069 <li>if an encoding change is detected it will be installed on the input
5070 buffer, providing buffering and efficient use of the conversion
5072 <li>once the parser has finished, the close() function of the handler is
5073 called once and the Input buffer and associated resources are
5077 <p>The user defined callbacks are checked first to allow overriding of the
5078 default libxml2 I/O routines.</p>
5080 <h3><a name="basic">The basic buffer type</a></h3>
5082 <p>All the buffer manipulation handling is done using the
5083 <code>xmlBuffer</code> type define in <code><a
5084 href="http://xmlsoft.org/html/libxml-tree.html">tree.h</a> </code>which is a
5085 resizable memory buffer. The buffer allocation strategy can be selected to be
5086 either best-fit or use an exponential doubling one (CPU vs. memory use
5087 trade-off). The values are <code>XML_BUFFER_ALLOC_EXACT</code> and
5088 <code>XML_BUFFER_ALLOC_DOUBLEIT</code>, and can be set individually or on a
5089 system wide basis using <code>xmlBufferSetAllocationScheme()</code>. A number
5090 of functions allows to manipulate buffers with names starting with the
5091 <code>xmlBuffer...</code> prefix.</p>
5093 <h3><a name="Input">Input I/O handlers</a></h3>
5095 <p>An Input I/O handler is a simple structure
5096 <code>xmlParserInputBuffer</code> containing a context associated to the
5097 resource (file descriptor, or pointer to a protocol handler), the read() and
5098 close() callbacks to use and an xmlBuffer. And extra xmlBuffer and a charset
5099 encoding handler are also present to support charset conversion when
5102 <h3><a name="Output">Output I/O handlers</a></h3>
5104 <p>An Output handler <code>xmlOutputBuffer</code> is completely similar to an
5105 Input one except the callbacks are write() and close().</p>
5107 <h3><a name="entities">The entities loader</a></h3>
5109 <p>The entity loader resolves requests for new entities and create inputs for
5110 the parser. Creating an input from a filename or an URI string is done
5111 through the xmlNewInputFromFile() routine. The default entity loader do not
5112 handle the PUBLIC identifier associated with an entity (if any). So it just
5113 calls xmlNewInputFromFile() with the SYSTEM identifier (which is mandatory in
5116 <p>If you want to hook up a catalog mechanism then you simply need to
5117 override the default entity loader, here is an example:</p>
5118 <pre>#include <libxml/xmlIO.h>
5120 xmlExternalEntityLoader defaultLoader = NULL;
5123 xmlMyExternalEntityLoader(const char *URL, const char *ID,
5124 xmlParserCtxtPtr ctxt) {
5125 xmlParserInputPtr ret;
5126 const char *fileID = NULL;
5127 /* lookup for the fileID depending on ID */
5129 ret = xmlNewInputFromFile(ctxt, fileID);
5132 if (defaultLoader != NULL)
5133 ret = defaultLoader(URL, ID, ctxt);
5141 * Install our own entity loader
5143 defaultLoader = xmlGetExternalEntityLoader();
5144 xmlSetExternalEntityLoader(xmlMyExternalEntityLoader);
5149 <h3><a name="Example2">Example of customized I/O</a></h3>
5151 <p>This example come from <a href="http://xmlsoft.org/messages/0708.html">a
5152 real use case</a>, xmlDocDump() closes the FILE * passed by the application
5153 and this was a problem. The <a
5154 href="http://xmlsoft.org/messages/0711.html">solution</a> was to redefine a
5155 new output handler with the closing call deactivated:</p>
5157 <li>First define a new I/O output allocator where the output don't close
5159 <pre>xmlOutputBufferPtr
5160 xmlOutputBufferCreateOwn(FILE *file, xmlCharEncodingHandlerPtr encoder) {
5161 xmlOutputBufferPtr ret;
5162
5163 if (xmlOutputCallbackInitialized == 0)
5164 xmlRegisterDefaultOutputCallbacks();
5166 if (file == NULL) return(NULL);
5167 ret = xmlAllocOutputBuffer(encoder);
5168 if (ret != NULL) {
5169 ret->context = file;
5170 ret->writecallback = xmlFileWrite;
5171 ret->closecallback = NULL; /* No close callback */
5172 }
5173 return(ret);
5176 <li>And then use it to save the document:
5178 xmlOutputBufferPtr output;
5185 output = xmlOutputBufferCreateOwn(f, NULL);
5186 res = xmlSaveFileTo(output, doc, NULL);
5191 <h2><a name="Catalog">Catalog support</a></h2>
5193 <p>Table of Content:</p>
5195 <li><a href="General2">General overview</a></li>
5196 <li><a href="#definition">The definition</a></li>
5197 <li><a href="#Simple">Using catalogs</a></li>
5198 <li><a href="#Some">Some examples</a></li>
5199 <li><a href="#reference">How to tune catalog usage</a></li>
5200 <li><a href="#validate">How to debug catalog processing</a></li>
5201 <li><a href="#Declaring">How to create and maintain catalogs</a></li>
5202 <li><a href="#implemento">The implementor corner quick review of the
5204 <li><a href="#Other">Other resources</a></li>
5207 <h3><a name="General2">General overview</a></h3>
5209 <p>What is a catalog? Basically it's a lookup mechanism used when an entity
5210 (a file or a remote resource) references another entity. The catalog lookup
5211 is inserted between the moment the reference is recognized by the software
5212 (XML parser, stylesheet processing, or even images referenced for inclusion
5213 in a rendering) and the time where loading that resource is actually
5216 <p>It is basically used for 3 things:</p>
5218 <li>mapping from "logical" names, the public identifiers and a more
5219 concrete name usable for download (and URI). For example it can associate
5221 <p>"-//OASIS//DTD DocBook XML V4.1.2//EN"</p>
5222 <p>of the DocBook 4.1.2 XML DTD with the actual URL where it can be
5224 <p>http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd</p>
5226 <li>remapping from a given URL to another one, like an HTTP indirection
5228 <p>"http://www.oasis-open.org/committes/tr.xsl"</p>
5229 <p>should really be looked at</p>
5230 <p>"http://www.oasis-open.org/committes/entity/stylesheets/base/tr.xsl"</p>
5232 <li>providing a local cache mechanism allowing to load the entities
5233 associated to public identifiers or remote resources, this is a really
5234 important feature for any significant deployment of XML or SGML since it
5235 allows to avoid the aleas and delays associated to fetching remote
5239 <h3><a name="definition">The definitions</a></h3>
5241 <p>Libxml, as of 2.4.3 implements 2 kind of catalogs:</p>
5243 <li>the older SGML catalogs, the official spec is SGML Open Technical
5244 Resolution TR9401:1997, but is better understood by reading <a
5245 href="http://www.jclark.com/sp/catalog.htm">the SP Catalog page</a> from
5246 James Clark. This is relatively old and not the preferred mode of
5247 operation of libxml.</li>
5248 <li><a href="http://www.oasis-open.org/committees/entity/spec.html">XML
5249 Catalogs</a> is far more flexible, more recent, uses an XML syntax and
5250 should scale quite better. This is the default option of libxml.</li>
5255 <h3><a name="Simple">Using catalog</a></h3>
5257 <p>In a normal environment libxml2 will by default check the presence of a
5258 catalog in /etc/xml/catalog, and assuming it has been correctly populated,
5259 the processing is completely transparent to the document user. To take a
5260 concrete example, suppose you are authoring a DocBook document, this one
5261 starts with the following DOCTYPE definition:</p>
5262 <pre><?xml version='1.0'?>
5263 <!DOCTYPE book PUBLIC "-//Norman Walsh//DTD DocBk XML V3.1.4//EN"
5264 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd"></pre>
5266 <p>When validating the document with libxml, the catalog will be
5267 automatically consulted to lookup the public identifier "-//Norman Walsh//DTD
5268 DocBk XML V3.1.4//EN" and the system identifier
5269 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd", and if these entities have
5270 been installed on your system and the catalogs actually point to them, libxml
5271 will fetch them from the local disk.</p>
5273 <p style="font-size: 10pt"><strong>Note</strong>: Really don't use this
5274 DOCTYPE example it's a really old version, but is fine as an example.</p>
5276 <p>Libxml2 will check the catalog each time that it is requested to load an
5277 entity, this includes DTD, external parsed entities, stylesheets, etc ... If
5278 your system is correctly configured all the authoring phase and processing
5279 should use only local files, even if your document stays portable because it
5280 uses the canonical public and system ID, referencing the remote document.</p>
5282 <h3><a name="Some">Some examples:</a></h3>
5284 <p>Here is a couple of fragments from XML Catalogs used in libxml2 early
5285 regression tests in <code>test/catalogs</code> :</p>
5286 <pre><?xml version="1.0"?>
5287 <!DOCTYPE catalog PUBLIC
5288 "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
5289 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5290 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
5291 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN"
5292 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/>
5295 <p>This is the beginning of a catalog for DocBook 4.1.2, XML Catalogs are
5296 written in XML, there is a specific namespace for catalog elements
5297 "urn:oasis:names:tc:entity:xmlns:xml:catalog". The first entry in this
5298 catalog is a <code>public</code> mapping it allows to associate a Public
5299 Identifier with an URI.</p>
5301 <rewriteSystem systemIdStartString="http://www.oasis-open.org/docbook/"
5302 rewritePrefix="file:///usr/share/xml/docbook/"/>
5305 <p>A <code>rewriteSystem</code> is a very powerful instruction, it says that
5306 any URI starting with a given prefix should be looked at another URI
5307 constructed by replacing the prefix with an new one. In effect this acts like
5308 a cache system for a full area of the Web. In practice it is extremely useful
5309 with a file prefix if you have installed a copy of those resources on your
5312 <delegatePublic publicIdStartString="-//OASIS//DTD XML Catalog //"
5313 catalog="file:///usr/share/xml/docbook.xml"/>
5314 <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook XML"
5315 catalog="file:///usr/share/xml/docbook.xml"/>
5316 <delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML"
5317 catalog="file:///usr/share/xml/docbook.xml"/>
5318 <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/"
5319 catalog="file:///usr/share/xml/docbook.xml"/>
5320 <delegateURI uriStartString="http://www.oasis-open.org/docbook/"
5321 catalog="file:///usr/share/xml/docbook.xml"/>
5324 <p>Delegation is the core features which allows to build a tree of catalogs,
5325 easier to maintain than a single catalog, based on Public Identifier, System
5326 Identifier or URI prefixes it instructs the catalog software to look up
5327 entries in another resource. This feature allow to build hierarchies of
5328 catalogs, the set of entries presented should be sufficient to redirect the
5329 resolution of all DocBook references to the specific catalog in
5330 <code>/usr/share/xml/docbook.xml</code> this one in turn could delegate all
5331 references for DocBook 4.2.1 to a specific catalog installed at the same time
5332 as the DocBook resources on the local machine.</p>
5334 <h3><a name="reference">How to tune catalog usage:</a></h3>
5336 <p>The user can change the default catalog behaviour by redirecting queries
5337 to its own set of catalogs, this can be done by setting the
5338 <code>XML_CATALOG_FILES</code> environment variable to a list of catalogs, an
5339 empty one should deactivate loading the default <code>/etc/xml/catalog</code>
5342 <h3><a name="validate">How to debug catalog processing:</a></h3>
5344 <p>Setting up the <code>XML_DEBUG_CATALOG</code> environment variable will
5345 make libxml2 output debugging information for each catalog operations, for
5347 <pre>orchis:~/XML -> xmllint --memory --noout test/ent2
5348 warning: failed to load external entity "title.xml"
5349 orchis:~/XML -> export XML_DEBUG_CATALOG=
5350 orchis:~/XML -> xmllint --memory --noout test/ent2
5351 Failed to parse catalog /etc/xml/catalog
5352 Failed to parse catalog /etc/xml/catalog
5353 warning: failed to load external entity "title.xml"
5355 orchis:~/XML -> </pre>
5357 <p>The test/ent2 references an entity, running the parser from memory makes
5358 the base URI unavailable and the the "title.xml" entity cannot be loaded.
5359 Setting up the debug environment variable allows to detect that an attempt is
5360 made to load the <code>/etc/xml/catalog</code> but since it's not present the
5361 resolution fails.</p>
5363 <p>But the most advanced way to debug XML catalog processing is to use the
5364 <strong>xmlcatalog</strong> command shipped with libxml2, it allows to load
5365 catalogs and make resolution queries to see what is going on. This is also
5366 used for the regression tests:</p>
5367 <pre>orchis:~/XML -> ./xmlcatalog test/catalogs/docbook.xml \
5368 "-//OASIS//DTD DocBook XML V4.1.2//EN"
5369 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
5370 orchis:~/XML -> </pre>
5372 <p>For debugging what is going on, adding one -v flags increase the verbosity
5373 level to indicate the processing done (adding a second flag also indicate
5374 what elements are recognized at parsing):</p>
5375 <pre>orchis:~/XML -> ./xmlcatalog -v test/catalogs/docbook.xml \
5376 "-//OASIS//DTD DocBook XML V4.1.2//EN"
5377 Parsing catalog test/catalogs/docbook.xml's content
5378 Found public match -//OASIS//DTD DocBook XML V4.1.2//EN
5379 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
5381 orchis:~/XML -> </pre>
5383 <p>A shell interface is also available to debug and process multiple queries
5384 (and for regression tests):</p>
5385 <pre>orchis:~/XML -> ./xmlcatalog -shell test/catalogs/docbook.xml \
5386 "-//OASIS//DTD DocBook XML V4.1.2//EN"
5389 public PublicID: make a PUBLIC identifier lookup
5390 system SystemID: make a SYSTEM identifier lookup
5391 resolve PublicID SystemID: do a full resolver lookup
5392 add 'type' 'orig' 'replace' : add an entry
5393 del 'values' : remove values
5394 dump: print the current catalog state
5395 debug: increase the verbosity level
5396 quiet: decrease the verbosity level
5397 exit: quit the shell
5398 > public "-//OASIS//DTD DocBook XML V4.1.2//EN"
5399 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
5401 orchis:~/XML -> </pre>
5403 <p>This should be sufficient for most debugging purpose, this was actually
5404 used heavily to debug the XML Catalog implementation itself.</p>
5406 <h3><a name="Declaring">How to create and maintain</a> catalogs:</h3>
5408 <p>Basically XML Catalogs are XML files, you can either use XML tools to
5409 manage them or use <strong>xmlcatalog</strong> for this. The basic step is
5410 to create a catalog the -create option provide this facility:</p>
5411 <pre>orchis:~/XML -> ./xmlcatalog --create tst.xml
5412 <?xml version="1.0"?>
5413 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
5414 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5415 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/>
5416 orchis:~/XML -> </pre>
5418 <p>By default xmlcatalog does not overwrite the original catalog and save the
5419 result on the standard output, this can be overridden using the -noout
5420 option. The <code>-add</code> command allows to add entries in the
5422 <pre>orchis:~/XML -> ./xmlcatalog --noout --create --add "public" \
5423 "-//OASIS//DTD DocBook XML V4.1.2//EN" \
5424 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd tst.xml
5425 orchis:~/XML -> cat tst.xml
5426 <?xml version="1.0"?>
5427 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" \
5428 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5429 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
5430 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN"
5431 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/>
5433 orchis:~/XML -> </pre>
5435 <p>The <code>-add</code> option will always take 3 parameters even if some of
5436 the XML Catalog constructs (like nextCatalog) will have only a single
5437 argument, just pass a third empty string, it will be ignored.</p>
5439 <p>Similarly the <code>-del</code> option remove matching entries from the
5441 <pre>orchis:~/XML -> ./xmlcatalog --del \
5442 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" tst.xml
5443 <?xml version="1.0"?>
5444 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
5445 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5446 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/>
5447 orchis:~/XML -> </pre>
5449 <p>The catalog is now empty. Note that the matching of <code>-del</code> is
5450 exact and would have worked in a similar fashion with the Public ID
5453 <p>This is rudimentary but should be sufficient to manage a not too complex
5454 catalog tree of resources.</p>
5456 <h3><a name="implemento">The implementor corner quick review of the
5459 <p>First, and like for every other module of libxml, there is an
5460 automatically generated <a href="html/libxml-catalog.html">API page for
5461 catalog support</a>.</p>
5463 <p>The header for the catalog interfaces should be included as:</p>
5464 <pre>#include <libxml/catalog.h></pre>
5466 <p>The API is voluntarily kept very simple. First it is not obvious that
5467 applications really need access to it since it is the default behaviour of
5468 libxml2 (Note: it is possible to completely override libxml2 default catalog
5469 by using <a href="html/libxml-parser.html">xmlSetExternalEntityLoader</a> to
5470 plug an application specific resolver).</p>
5472 <p>Basically libxml2 support 2 catalog lists:</p>
5474 <li>the default one, global shared by all the application</li>
5475 <li>a per-document catalog, this one is built if the document uses the
5476 <code>oasis-xml-catalog</code> PIs to specify its own catalog list, it is
5477 associated to the parser context and destroyed when the parsing context
5481 <p>the document one will be used first if it exists.</p>
5483 <h4>Initialization routines:</h4>
5485 <p>xmlInitializeCatalog(), xmlLoadCatalog() and xmlLoadCatalogs() should be
5486 used at startup to initialize the catalog, if the catalog should be
5487 initialized with specific values xmlLoadCatalog() or xmlLoadCatalogs()
5488 should be called before xmlInitializeCatalog() which would otherwise do a
5489 default initialization first.</p>
5491 <p>The xmlCatalogAddLocal() call is used by the parser to grow the document
5492 own catalog list if needed.</p>
5494 <h4>Preferences setup:</h4>
5496 <p>The XML Catalog spec requires the possibility to select default
5497 preferences between public and system delegation,
5498 xmlCatalogSetDefaultPrefer() allows this, xmlCatalogSetDefaults() and
5499 xmlCatalogGetDefaults() allow to control if XML Catalogs resolution should
5500 be forbidden, allowed for global catalog, for document catalog or both, the
5501 default is to allow both.</p>
5503 <p>And of course xmlCatalogSetDebug() allows to generate debug messages
5504 (through the xmlGenericError() mechanism).</p>
5506 <h4>Querying routines:</h4>
5508 <p>xmlCatalogResolve(), xmlCatalogResolveSystem(), xmlCatalogResolvePublic()
5509 and xmlCatalogResolveURI() are relatively explicit if you read the XML
5510 Catalog specification they correspond to section 7 algorithms, they should
5511 also work if you have loaded an SGML catalog with a simplified semantic.</p>
5513 <p>xmlCatalogLocalResolve() and xmlCatalogLocalResolveURI() are the same but
5514 operate on the document catalog list</p>
5516 <h4>Cleanup and Miscellaneous:</h4>
5518 <p>xmlCatalogCleanup() free-up the global catalog, xmlCatalogFreeLocal() is
5519 the per-document equivalent.</p>
5521 <p>xmlCatalogAdd() and xmlCatalogRemove() are used to dynamically modify the
5522 first catalog in the global list, and xmlCatalogDump() allows to dump a
5523 catalog state, those routines are primarily designed for xmlcatalog, I'm not
5524 sure that exposing more complex interfaces (like navigation ones) would be
5527 <p>The xmlParseCatalogFile() is a function used to load XML Catalog files,
5528 it's similar as xmlParseFile() except it bypass all catalog lookups, it's
5529 provided because this functionality may be useful for client tools.</p>
5531 <h4>threaded environments:</h4>
5533 <p>Since the catalog tree is built progressively, some care has been taken to
5534 try to avoid troubles in multithreaded environments. The code is now thread
5535 safe assuming that the libxml2 library has been compiled with threads
5540 <h3><a name="Other">Other resources</a></h3>
5542 <p>The XML Catalog specification is relatively recent so there isn't much
5543 literature to point at:</p>
5545 <li>You can find a good rant from Norm Walsh about <a
5546 href="http://www.arbortext.com/Think_Tank/XML_Resources/Issue_Three/issue_three.html">the
5547 need for catalogs</a>, it provides a lot of context information even if
5548 I don't agree with everything presented. Norm also wrote a more recent
5550 href="http://wwws.sun.com/software/xml/developers/resolver/article/">XML
5551 entities and URI resolvers</a> describing them.</li>
5552 <li>An <a href="http://home.ccil.org/~cowan/XML/XCatalog.html">old XML
5553 catalog proposal</a> from John Cowan</li>
5554 <li>The <a href="http://www.rddl.org/">Resource Directory Description
5555 Language</a> (RDDL) another catalog system but more oriented toward
5556 providing metadata for XML namespaces.</li>
5557 <li>the page from the OASIS Technical <a
5558 href="http://www.oasis-open.org/committees/entity/">Committee on Entity
5559 Resolution</a> who maintains XML Catalog, you will find pointers to the
5560 specification update, some background and pointers to others tools
5561 providing XML Catalog support</li>
5562 <li>There is a <a href="buildDocBookCatalog">shell script</a> to generate
5563 XML Catalogs for DocBook 4.1.2 . If it can write to the /etc/xml/
5564 directory, it will set-up /etc/xml/catalog and /etc/xml/docbook based on
5565 the resources found on the system. Otherwise it will just create
5566 ~/xmlcatalog and ~/dbkxmlcatalog and doing:
5567 <p><code>export XML_CATALOG_FILES=$HOME/xmlcatalog</code></p>
5568 <p>should allow to process DocBook documentations without requiring
5569 network accesses for the DTD or stylesheets</p>
5571 <li>I have uploaded <a href="ftp://xmlsoft.org/libxml2/test/dbk412catalog.tar.gz">a
5572 small tarball</a> containing XML Catalogs for DocBook 4.1.2 which seems
5573 to work fine for me too</li>
5574 <li>The <a href="http://www.xmlsoft.org/xmlcatalog_man.html">xmlcatalog
5575 manual page</a></li>
5578 <p>If you have suggestions for corrections or additions, simply contact
5581 <h2><a name="library">The parser interfaces</a></h2>
5583 <p>This section is directly intended to help programmers getting bootstrapped
5584 using the XML tollkit from the C language. It is not intended to be
5585 extensive. I hope the automatically generated documents will provide the
5586 completeness required, but as a separate set of documents. The interfaces of
5587 the XML parser are by principle low level, Those interested in a higher level
5588 API should <a href="#DOM">look at DOM</a>.</p>
5590 <p>The <a href="html/libxml-parser.html">parser interfaces for XML</a> are
5591 separated from the <a href="html/libxml-htmlparser.html">HTML parser
5592 interfaces</a>. Let's have a look at how the XML parser can be called:</p>
5594 <h3><a name="Invoking">Invoking the parser : the pull method</a></h3>
5596 <p>Usually, the first thing to do is to read an XML input. The parser accepts
5597 documents either from in-memory strings or from files. The functions are
5598 defined in "parser.h":</p>
5600 <dt><code>xmlDocPtr xmlParseMemory(char *buffer, int size);</code></dt>
5601 <dd><p>Parse a null-terminated string containing the document.</p>
5605 <dt><code>xmlDocPtr xmlParseFile(const char *filename);</code></dt>
5606 <dd><p>Parse an XML document contained in a (possibly compressed)
5611 <p>The parser returns a pointer to the document structure (or NULL in case of
5614 <h3 id="Invoking1">Invoking the parser: the push method</h3>
5616 <p>In order for the application to keep the control when the document is
5617 being fetched (which is common for GUI based programs) libxml2 provides a
5618 push interface, too, as of version 1.8.3. Here are the interface
5620 <pre>xmlParserCtxtPtr xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax,
5624 const char *filename);
5625 int xmlParseChunk (xmlParserCtxtPtr ctxt,
5628 int terminate);</pre>
5630 <p>and here is a simple example showing how to use the interface:</p>
5633 f = fopen(filename, "r");
5635 int res, size = 1024;
5637 xmlParserCtxtPtr ctxt;
5639 res = fread(chars, 1, 4, f);
5641 ctxt = xmlCreatePushParserCtxt(NULL, NULL,
5642 chars, res, filename);
5643 while ((res = fread(chars, 1, size, f)) > 0) {
5644 xmlParseChunk(ctxt, chars, res, 0);
5646 xmlParseChunk(ctxt, chars, 0, 1);
5647 doc = ctxt->myDoc;
5648 xmlFreeParserCtxt(ctxt);
5652 <p>The HTML parser embedded into libxml2 also has a push interface; the
5653 functions are just prefixed by "html" rather than "xml".</p>
5655 <h3 id="Invoking2">Invoking the parser: the SAX interface</h3>
5657 <p>The tree-building interface makes the parser memory-hungry, first loading
5658 the document in memory and then building the tree itself. Reading a document
5659 without building the tree is possible using the SAX interfaces (see SAX.h and
5660 <a href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">James
5661 Henstridge's documentation</a>). Note also that the push interface can be
5662 limited to SAX: just use the two first arguments of
5663 <code>xmlCreatePushParserCtxt()</code>.</p>
5665 <h3><a name="Building">Building a tree from scratch</a></h3>
5667 <p>The other way to get an XML tree in memory is by building it. Basically
5668 there is a set of functions dedicated to building new elements. (These are
5669 also described in <libxml/tree.h>.) For example, here is a piece of
5670 code that produces the XML document used in the previous examples:</p>
5671 <pre> #include <libxml/tree.h>
5673 xmlNodePtr tree, subtree;
5675 doc = xmlNewDoc("1.0");
5676 doc->children = xmlNewDocNode(doc, NULL, "EXAMPLE", NULL);
5677 xmlSetProp(doc->children, "prop1", "gnome is great");
5678 xmlSetProp(doc->children, "prop2", "& linux too");
5679 tree = xmlNewChild(doc->children, NULL, "head", NULL);
5680 subtree = xmlNewChild(tree, NULL, "title", "Welcome to Gnome");
5681 tree = xmlNewChild(doc->children, NULL, "chapter", NULL);
5682 subtree = xmlNewChild(tree, NULL, "title", "The Linux adventure");
5683 subtree = xmlNewChild(tree, NULL, "p", "bla bla bla ...");
5684 subtree = xmlNewChild(tree, NULL, "image", NULL);
5685 xmlSetProp(subtree, "href", "linus.gif");</pre>
5687 <p>Not really rocket science ...</p>
5689 <h3><a name="Traversing">Traversing the tree</a></h3>
5691 <p>Basically by <a href="html/libxml-tree.html">including "tree.h"</a> your
5692 code has access to the internal structure of all the elements of the tree.
5693 The names should be somewhat simple like <strong>parent</strong>,
5694 <strong>children</strong>, <strong>next</strong>, <strong>prev</strong>,
5695 <strong>properties</strong>, etc... For example, still with the previous
5697 <pre><code>doc->children->children->children</code></pre>
5699 <p>points to the title element,</p>
5700 <pre>doc->children->children->next->children->children</pre>
5702 <p>points to the text node containing the chapter title "The Linux
5705 <p><strong>NOTE</strong>: XML allows <em>PI</em>s and <em>comments</em> to be
5706 present before the document root, so <code>doc->children</code> may point
5707 to an element which is not the document Root Element; a function
5708 <code>xmlDocGetRootElement()</code> was added for this purpose.</p>
5710 <h3><a name="Modifying">Modifying the tree</a></h3>
5712 <p>Functions are provided for reading and writing the document content. Here
5713 is an excerpt from the <a href="html/libxml-tree.html">tree API</a>:</p>
5715 <dt><code>xmlAttrPtr xmlSetProp(xmlNodePtr node, const xmlChar *name, const
5716 xmlChar *value);</code></dt>
5717 <dd><p>This sets (or changes) an attribute carried by an ELEMENT node.
5718 The value can be NULL.</p>
5722 <dt><code>const xmlChar *xmlGetProp(xmlNodePtr node, const xmlChar
5724 <dd><p>This function returns a pointer to new copy of the property
5725 content. Note that the user must deallocate the result.</p>
5729 <p>Two functions are provided for reading and writing the text associated
5732 <dt><code>xmlNodePtr xmlStringGetNodeList(xmlDocPtr doc, const xmlChar
5733 *value);</code></dt>
5734 <dd><p>This function takes an "external" string and converts it to one
5735 text node or possibly to a list of entity and text nodes. All
5736 non-predefined entity references like &Gnome; will be stored
5737 internally as entity nodes, hence the result of the function may not be
5742 <dt><code>xmlChar *xmlNodeListGetString(xmlDocPtr doc, xmlNodePtr list, int
5743 inLine);</code></dt>
5744 <dd><p>This function is the inverse of
5745 <code>xmlStringGetNodeList()</code>. It generates a new string
5746 containing the content of the text and entity nodes. Note the extra
5747 argument inLine. If this argument is set to 1, the function will expand
5748 entity references. For example, instead of returning the &Gnome;
5749 XML encoding in the string, it will substitute it with its value (say,
5750 "GNU Network Object Model Environment").</p>
5754 <h3><a name="Saving">Saving a tree</a></h3>
5756 <p>Basically 3 options are possible:</p>
5758 <dt><code>void xmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int
5760 <dd><p>Returns a buffer into which the document has been saved.</p>
5764 <dt><code>extern void xmlDocDump(FILE *f, xmlDocPtr doc);</code></dt>
5765 <dd><p>Dumps a document to an open file descriptor.</p>
5769 <dt><code>int xmlSaveFile(const char *filename, xmlDocPtr cur);</code></dt>
5770 <dd><p>Saves the document to a file. In this case, the compression
5771 interface is triggered if it has been turned on.</p>
5775 <h3><a name="Compressio">Compression</a></h3>
5777 <p>The library transparently handles compression when doing file-based
5778 accesses. The level of compression on saves can be turned on either globally
5779 or individually for one file:</p>
5781 <dt><code>int xmlGetDocCompressMode (xmlDocPtr doc);</code></dt>
5782 <dd><p>Gets the document compression ratio (0-9).</p>
5786 <dt><code>void xmlSetDocCompressMode (xmlDocPtr doc, int mode);</code></dt>
5787 <dd><p>Sets the document compression ratio.</p>
5791 <dt><code>int xmlGetCompressMode(void);</code></dt>
5792 <dd><p>Gets the default compression ratio.</p>
5796 <dt><code>void xmlSetCompressMode(int mode);</code></dt>
5797 <dd><p>Sets the default compression ratio.</p>
5801 <h2><a name="Entities">Entities or no entities</a></h2>
5803 <p>Entities in principle are similar to simple C macros. An entity defines an
5804 abbreviation for a given string that you can reuse many times throughout the
5805 content of your document. Entities are especially useful when a given string
5806 may occur frequently within a document, or to confine the change needed to a
5807 document to a restricted area in the internal subset of the document (at the
5808 beginning). Example:</p>
5809 <pre>1 <?xml version="1.0"?>
5810 2 <!DOCTYPE EXAMPLE SYSTEM "example.dtd" [
5811 3 <!ENTITY xml "Extensible Markup Language">
5815 7 </EXAMPLE></pre>
5817 <p>Line 3 declares the xml entity. Line 6 uses the xml entity, by prefixing
5818 its name with '&' and following it by ';' without any spaces added. There
5819 are 5 predefined entities in libxml2 allowing you to escape characters with
5820 predefined meaning in some parts of the xml document content:
5821 <strong>&lt;</strong> for the character '<', <strong>&gt;</strong>
5822 for the character '>', <strong>&apos;</strong> for the character ''',
5823 <strong>&quot;</strong> for the character '"', and
5824 <strong>&amp;</strong> for the character '&'.</p>
5826 <p>One of the problems related to entities is that you may want the parser to
5827 substitute an entity's content so that you can see the replacement text in
5828 your application. Or you may prefer to keep entity references as such in the
5829 content to be able to save the document back without losing this usually
5830 precious information (if the user went through the pain of explicitly
5831 defining entities, he may have a a rather negative attitude if you blindly
5832 substitute them as saving time). The <a
5833 href="html/libxml-parser.html#xmlSubstituteEntitiesDefault">xmlSubstituteEntitiesDefault()</a>
5834 function allows you to check and change the behaviour, which is to not
5835 substitute entities by default.</p>
5837 <p>Here is the DOM tree built by libxml2 for the previous document in the
5839 <pre>/gnome/src/gnome-xml -> ./xmllint --debug test/ent1
5846 INTERNAL_GENERAL_ENTITY xml
5847 content=Extensible Markup Language
5851 <p>And here is the result when substituting entities:</p>
5852 <pre>/gnome/src/gnome-xml -> ./tester --debug --noent test/ent1
5857 content= Extensible Markup Language</pre>
5859 <p>So, entities or no entities? Basically, it depends on your use case. I
5860 suggest that you keep the non-substituting default behaviour and avoid using
5861 entities in your XML document or data if you are not willing to handle the
5862 entity references elements in the DOM tree.</p>
5864 <p>Note that at save time libxml2 enforces the conversion of the predefined
5865 entities where necessary to prevent well-formedness problems, and will also
5866 transparently replace those with chars (i.e. it will not generate entity
5867 reference elements in the DOM tree or call the reference() SAX callback when
5868 finding them in the input).</p>
5870 <p><span style="background-color: #FF0000">WARNING</span>: handling entities
5871 on top of the libxml2 SAX interface is difficult!!! If you plan to use
5872 non-predefined entities in your documents, then the learning curve to handle
5873 then using the SAX API may be long. If you plan to use complex documents, I
5874 strongly suggest you consider using the DOM interface instead and let libxml
5875 deal with the complexity rather than trying to do it yourself.</p>
5877 <h2><a name="Namespaces">Namespaces</a></h2>
5879 <p>The libxml2 library implements <a
5880 href="http://www.w3.org/TR/REC-xml-names/">XML namespaces</a> support by
5881 recognizing namespace constructs in the input, and does namespace lookup
5882 automatically when building the DOM tree. A namespace declaration is
5883 associated with an in-memory structure and all elements or attributes within
5884 that namespace point to it. Hence testing the namespace is a simple and fast
5885 equality operation at the user level.</p>
5887 <p>I suggest that people using libxml2 use a namespace, and declare it in the
5888 root element of their document as the default namespace. Then they don't need
5889 to use the prefix in the content but we will have a basis for future semantic
5890 refinement and merging of data from different sources. This doesn't increase
5891 the size of the XML output significantly, but significantly increases its
5892 value in the long-term. Example:</p>
5893 <pre><mydoc xmlns="http://mydoc.example.org/schemas/">
5894 <elem1>...</elem1>
5895 <elem2>...</elem2>
5896 </mydoc></pre>
5898 <p>The namespace value has to be an absolute URL, but the URL doesn't have to
5899 point to any existing resource on the Web. It will bind all the element and
5900 attributes with that URL. I suggest to use an URL within a domain you
5901 control, and that the URL should contain some kind of version information if
5902 possible. For example, <code>"http://www.gnome.org/gnumeric/1.0/"</code> is a
5903 good namespace scheme.</p>
5905 <p>Then when you load a file, make sure that a namespace carrying the
5906 version-independent prefix is installed on the root element of your document,
5907 and if the version information don't match something you know, warn the user
5908 and be liberal in what you accept as the input. Also do *not* try to base
5909 namespace checking on the prefix value. <foo:text> may be exactly the
5910 same as <bar:text> in another document. What really matters is the URI
5911 associated with the element or the attribute, not the prefix string (which is
5912 just a shortcut for the full URI). In libxml, element and attributes have an
5913 <code>ns</code> field pointing to an xmlNs structure detailing the namespace
5914 prefix and its URI.</p>
5916 <p>@@Interfaces@@</p>
5917 <pre>xmlNodePtr node;
5918 if(!strncmp(node->name,"mytag",5)
5919 && node->ns
5920 && !strcmp(node->ns->href,"http://www.mysite.com/myns/1.0")) {
5924 <p>Usually people object to using namespaces together with validity checking.
5925 I will try to make sure that using namespaces won't break validity checking,
5926 so even if you plan to use or currently are using validation I strongly
5927 suggest adding namespaces to your document. A default namespace scheme
5928 <code>xmlns="http://...."</code> should not break validity even on less
5929 flexible parsers. Using namespaces to mix and differentiate content coming
5930 from multiple DTDs will certainly break current validation schemes. To check
5931 such documents one needs to use schema-validation, which is supported in
5932 libxml2 as well. See <a href="http://www.relaxng.org/">relagx-ng</a> and <a
5933 href="http://www.w3c.org/XML/Schema">w3c-schema</a>.</p>
5935 <h2><a name="Upgrading">Upgrading 1.x code</a></h2>
5937 <p>Incompatible changes:</p>
5939 <p>Version 2 of libxml2 is the first version introducing serious backward
5940 incompatible changes. The main goals were:</p>
5942 <li>a general cleanup. A number of mistakes inherited from the very early
5943 versions couldn't be changed due to compatibility constraints. Example
5944 the "childs" element in the nodes.</li>
5945 <li>Uniformization of the various nodes, at least for their header and link
5946 parts (doc, parent, children, prev, next), the goal is a simpler
5947 programming model and simplifying the task of the DOM implementors.</li>
5948 <li>better conformances to the XML specification, for example version 1.x
5949 had an heuristic to try to detect ignorable white spaces. As a result the
5950 SAX event generated were ignorableWhitespace() while the spec requires
5951 character() in that case. This also mean that a number of DOM node
5952 containing blank text may populate the DOM tree which were not present
5956 <h3>How to fix libxml-1.x code:</h3>
5958 <p>So client code of libxml designed to run with version 1.x may have to be
5959 changed to compile against version 2.x of libxml. Here is a list of changes
5960 that I have collected, they may not be sufficient, so in case you find other
5961 change which are required, <a href="mailto:Daniel.Veillard@w3.org">drop me a
5964 <li>The package name have changed from libxml to libxml2, the library name
5965 is now -lxml2 . There is a new xml2-config script which should be used to
5966 select the right parameters libxml2</li>
5967 <li>Node <strong>childs</strong> field has been renamed
5968 <strong>children</strong> so s/childs/children/g should be applied
5969 (probability of having "childs" anywhere else is close to 0+</li>
5970 <li>The document don't have anymore a <strong>root</strong> element it has
5971 been replaced by <strong>children</strong> and usually you will get a
5972 list of element here. For example a Dtd element for the internal subset
5973 and it's declaration may be found in that list, as well as processing
5974 instructions or comments found before or after the document root element.
5975 Use <strong>xmlDocGetRootElement(doc)</strong> to get the root element of
5976 a document. Alternatively if you are sure to not reference DTDs nor have
5977 PIs or comments before or after the root element
5978 s/->root/->children/g will probably do it.</li>
5979 <li>The white space issue, this one is more complex, unless special case of
5980 validating parsing, the line breaks and spaces usually used for indenting
5981 and formatting the document content becomes significant. So they are
5982 reported by SAX and if your using the DOM tree, corresponding nodes are
5983 generated. Too approach can be taken:
5985 <li>lazy one, use the compatibility call
5986 <strong>xmlKeepBlanksDefault(0)</strong> but be aware that you are
5987 relying on a special (and possibly broken) set of heuristics of
5988 libxml to detect ignorable blanks. Don't complain if it breaks or
5989 make your application not 100% clean w.r.t. to it's input.</li>
5990 <li>the Right Way: change you code to accept possibly insignificant
5991 blanks characters, or have your tree populated with weird blank text
5992 nodes. You can spot them using the commodity function
5993 <strong>xmlIsBlankNode(node)</strong> returning 1 for such blank
5996 <p>Note also that with the new default the output functions don't add any
5997 extra indentation when saving a tree in order to be able to round trip
5998 (read and save) without inflating the document with extra formatting
6001 <li>The include path has changed to $prefix/libxml/ and the includes
6002 themselves uses this new prefix in includes instructions... If you are
6003 using (as expected) the
6004 <pre>xml2-config --cflags</pre>
6005 <p>output to generate you compile commands this will probably work out of
6008 <li>xmlDetectCharEncoding takes an extra argument indicating the length in
6009 byte of the head of the document available for character detection.</li>
6012 <h3>Ensuring both libxml-1.x and libxml-2.x compatibility</h3>
6014 <p>Two new version of libxml (1.8.11) and libxml2 (2.3.4) have been released
6015 to allow smooth upgrade of existing libxml v1code while retaining
6016 compatibility. They offers the following:</p>
6018 <li>similar include naming, one should use
6019 <strong>#include<libxml/...></strong> in both cases.</li>
6020 <li>similar identifiers defined via macros for the child and root fields:
6021 respectively <strong>xmlChildrenNode</strong> and
6022 <strong>xmlRootNode</strong></li>
6023 <li>a new macro <strong>LIBXML_TEST_VERSION</strong> which should be
6024 inserted once in the client code</li>
6027 <p>So the roadmap to upgrade your existing libxml applications is the
6030 <li>install the libxml-1.8.8 (and libxml-devel-1.8.8) packages</li>
6031 <li>find all occurrences where the xmlDoc <strong>root</strong> field is
6032 used and change it to <strong>xmlRootNode</strong></li>
6033 <li>similarly find all occurrences where the xmlNode
6034 <strong>childs</strong> field is used and change it to
6035 <strong>xmlChildrenNode</strong></li>
6036 <li>add a <strong>LIBXML_TEST_VERSION</strong> macro somewhere in your
6037 <strong>main()</strong> or in the library init entry point</li>
6038 <li>Recompile, check compatibility, it should still work</li>
6039 <li>Change your configure script to look first for xml2-config and fall
6040 back using xml-config . Use the --cflags and --libs output of the command
6041 as the Include and Linking parameters needed to use libxml.</li>
6042 <li>install libxml2-2.3.x and libxml2-devel-2.3.x (libxml-1.8.y and
6043 libxml-devel-1.8.y can be kept simultaneously)</li>
6044 <li>remove your config.cache, relaunch your configuration mechanism, and
6045 recompile, if steps 2 and 3 were done right it should compile as-is</li>
6046 <li>Test that your application is still running correctly, if not this may
6047 be due to extra empty nodes due to formating spaces being kept in libxml2
6048 contrary to libxml1, in that case insert xmlKeepBlanksDefault(1) in your
6049 code before calling the parser (next to
6050 <strong>LIBXML_TEST_VERSION</strong> is a fine place).</li>
6053 <p>Following those steps should work. It worked for some of my own code.</p>
6055 <p>Let me put some emphasis on the fact that there is far more changes from
6056 libxml 1.x to 2.x than the ones you may have to patch for. The overall code
6057 has been considerably cleaned up and the conformance to the XML specification
6058 has been drastically improved too. Don't take those changes as an excuse to
6059 not upgrade, it may cost a lot on the long term ...</p>
6061 <h2><a name="Thread">Thread safety</a></h2>
6063 <p>Starting with 2.4.7, libxml2 makes provisions to ensure that concurrent
6064 threads can safely work in parallel parsing different documents. There is
6065 however a couple of things to do to ensure it:</p>
6067 <li>configure the library accordingly using the --with-threads options</li>
6068 <li>call xmlInitParser() in the "main" thread before using any of the
6069 libxml2 API (except possibly selecting a different memory allocator)</li>
6072 <p>Note that the thread safety cannot be ensured for multiple threads sharing
6073 the same document, the locking must be done at the application level, libxml
6074 exports a basic mutex and reentrant mutexes API in <libxml/threads.h>.
6075 The parts of the library checked for thread safety are:</p>
6077 <li>concurrent loading</li>
6078 <li>file access resolution</li>
6079 <li>catalog access</li>
6080 <li>catalog building</li>
6081 <li>entities lookup/accesses</li>
6083 <li>global variables per-thread override</li>
6084 <li>memory handling</li>
6087 <p>XPath has been tested for threaded usage on non-modified document
6088 for example when using libxslt, but make 100% sure the documents
6089 are accessed read-only !</p>
6091 <h2><a name="DOM"></a><a name="Principles">DOM Principles</a></h2>
6093 <p><a href="http://www.w3.org/DOM/">DOM</a> stands for the <em>Document
6094 Object Model</em>; this is an API for accessing XML or HTML structured
6095 documents. Native support for DOM in Gnome is on the way (module gnome-dom),
6096 and will be based on gnome-xml. This will be a far cleaner interface to
6097 manipulate XML files within Gnome since it won't expose the internal
6100 <p>The current DOM implementation on top of libxml2 is the <a
6101 href="http://svn.gnome.org/viewvc/gdome2/trunk/">gdome2 Gnome module</a>, this
6102 is a full DOM interface, thanks to Paolo Casarini, check the <a
6103 href="http://gdome2.cs.unibo.it/">Gdome2 homepage</a> for more
6106 <h2><a name="Example"></a><a name="real">A real example</a></h2>
6108 <p>Here is a real size example, where the actual content of the application
6109 data is not kept in the DOM tree but uses internal structures. It is based on
6110 a proposal to keep a database of jobs related to Gnome, with an XML based
6111 storage structure. Here is an <a href="gjobs.xml">XML encoded jobs
6113 <pre><?xml version="1.0"?>
6114 <gjob:Helping xmlns:gjob="http://www.gnome.org/some-location">
6118 <gjob:Project ID="3"/>
6119 <gjob:Application>GBackup</gjob:Application>
6120 <gjob:Category>Development</gjob:Category>
6123 <gjob:Status>Open</gjob:Status>
6124 <gjob:Modified>Mon, 07 Jun 1999 20:27:45 -0400 MET DST</gjob:Modified>
6125 <gjob:Salary>USD 0.00</gjob:Salary>
6126 </gjob:Update>
6128 <gjob:Developers>
6129 <gjob:Developer>
6130 </gjob:Developer>
6131 </gjob:Developers>
6133 <gjob:Contact>
6134 <gjob:Person>Nathan Clemons</gjob:Person>
6135 <gjob:Email>nathan@windsofstorm.net</gjob:Email>
6136 <gjob:Company>
6137 </gjob:Company>
6138 <gjob:Organisation>
6139 </gjob:Organisation>
6140 <gjob:Webpage>
6141 </gjob:Webpage>
6142 <gjob:Snailmail>
6143 </gjob:Snailmail>
6146 </gjob:Contact>
6148 <gjob:Requirements>
6149 The program should be released as free software, under the GPL.
6150 </gjob:Requirements>
6153 </gjob:Skills>
6155 <gjob:Details>
6156 A GNOME based system that will allow a superuser to configure
6157 compressed and uncompressed files and/or file systems to be backed
6158 up with a supported media in the system. This should be able to
6159 perform via find commands generating a list of files that are passed
6160 to tar, dd, cpio, cp, gzip, etc., to be directed to the tape machine
6161 or via operations performed on the filesystem itself. Email
6162 notification and GUI status display very important.
6163 </gjob:Details>
6168 </gjob:Helping></pre>
6170 <p>While loading the XML file into an internal DOM tree is a matter of
6171 calling only a couple of functions, browsing the tree to gather the data and
6172 generate the internal structures is harder, and more error prone.</p>
6174 <p>The suggested principle is to be tolerant with respect to the input
6175 structure. For example, the ordering of the attributes is not significant,
6176 the XML specification is clear about it. It's also usually a good idea not to
6177 depend on the order of the children of a given node, unless it really makes
6178 things harder. Here is some code to parse the information for a person:</p>
6182 typedef struct person {
6190 } person, *personPtr;
6193 * And the code needed to parse it
6195 personPtr parsePerson(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) {
6196 personPtr ret = NULL;
6198 DEBUG("parsePerson\n");
6200 * allocate the struct
6202 ret = (personPtr) malloc(sizeof(person));
6204 fprintf(stderr,"out of memory\n");
6207 memset(ret, 0, sizeof(person));
6209 /* We don't care what the top level element name is */
6210 cur = cur->xmlChildrenNode;
6211 while (cur != NULL) {
6212 if ((!strcmp(cur->name, "Person")) && (cur->ns == ns))
6213 ret->name = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
6214 if ((!strcmp(cur->name, "Email")) && (cur->ns == ns))
6215 ret->email = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
6222 <p>Here are a couple of things to notice:</p>
6224 <li>Usually a recursive parsing style is the more convenient one: XML data
6225 is by nature subject to repetitive constructs and usually exhibits highly
6226 structured patterns.</li>
6227 <li>The two arguments of type <em>xmlDocPtr</em> and <em>xmlNsPtr</em>,
6228 i.e. the pointer to the global XML document and the namespace reserved to
6229 the application. Document wide information are needed for example to
6230 decode entities and it's a good coding practice to define a namespace for
6231 your application set of data and test that the element and attributes
6232 you're analyzing actually pertains to your application space. This is
6233 done by a simple equality test (cur->ns == ns).</li>
6234 <li>To retrieve text and attributes value, you can use the function
6235 <em>xmlNodeListGetString</em> to gather all the text and entity reference
6236 nodes generated by the DOM output and produce an single text string.</li>
6239 <p>Here is another piece of code used to parse another level of the
6241 <pre>#include <libxml/tree.h>
6243 * a Description for a Job
6245 typedef struct job {
6251 personPtr developers[100]; /* using dynamic alloc is left as an exercise */
6255 * And the code needed to parse it
6257 jobPtr parseJob(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) {
6260 DEBUG("parseJob\n");
6262 * allocate the struct
6264 ret = (jobPtr) malloc(sizeof(job));
6266 fprintf(stderr,"out of memory\n");
6269 memset(ret, 0, sizeof(job));
6271 /* We don't care what the top level element name is */
6272 cur = cur->xmlChildrenNode;
6273 while (cur != NULL) {
6275 if ((!strcmp(cur->name, "Project")) && (cur->ns == ns)) {
6276 ret->projectID = xmlGetProp(cur, "ID");
6277 if (ret->projectID == NULL) {
6278 fprintf(stderr, "Project has no ID\n");
6281 if ((!strcmp(cur->name, "Application")) && (cur->ns == ns))
6282 ret->application = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
6283 if ((!strcmp(cur->name, "Category")) && (cur->ns == ns))
6284 ret->category = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
6285 if ((!strcmp(cur->name, "Contact")) && (cur->ns == ns))
6286 ret->contact = parsePerson(doc, ns, cur);
6293 <p>Once you are used to it, writing this kind of code is quite simple, but
6294 boring. Ultimately, it could be possible to write stubbers taking either C
6295 data structure definitions, a set of XML examples or an XML DTD and produce
6296 the code needed to import and export the content between C data and XML
6297 storage. This is left as an exercise to the reader :-)</p>
6299 <p>Feel free to use <a href="example/gjobread.c">the code for the full C
6300 parsing example</a> as a template, it is also available with Makefile in the
6301 Gnome SVN base under libxml2/example</p>
6303 <h2><a name="Contributi">Contributions</a></h2>
6305 <li>Bjorn Reese, William Brack and Thomas Broyer have provided a number of
6306 patches, Gary Pennington worked on the validation API, threading support
6307 and Solaris port.</li>
6308 <li>John Fleck helps maintaining the documentation and man pages.</li>
6309 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the
6310 maintainer of the Windows port, <a
6311 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides
6313 <li><a href="mailto:Gary.Pennington@sun.com">Gary Pennington</a> provides
6314 <a href="http://garypennington.net/libxml2/">Solaris binaries</a></li>
6316 href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">Matt
6317 Sergeant</a> developed <a
6318 href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl wrapper for
6319 libxml2/libxslt as part of the <a href="http://axkit.com/">AxKit XML
6320 application server</a></li>
6321 <li><a href="mailto:fnatter@gmx.net">Felix Natter</a> and <a
6322 href="mailto:geertk@ai.rug.nl">Geert Kloosterman</a> provide <a
6323 href="libxml-doc.el">an emacs module</a> to lookup libxml(2) functions
6325 <li><a href="mailto:sherwin@nlm.nih.gov">Ziying Sherwin</a> provided <a
6326 href="http://xmlsoft.org/messages/0488.html">man pages</a></li>
6327 <li>there is a module for <a
6328 href="http://acs-misc.sourceforge.net/nsxml.html">libxml/libxslt support
6329 in OpenNSD/AOLServer</a></li>
6330 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provided the
6331 first version of libxml/libxslt <a
6332 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a></li>
6333 <li>Petr Kozelka provides <a
6334 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue
6335 libxml2</a> with Kylix and Delphi and other Pascal compilers</li>
6336 <li><a href="mailto:aleksey@aleksey.com">Aleksey Sanin</a> implemented the
6337 <a href="http://www.w3.org/Signature/">XML Canonicalization and XML
6338 Digital Signature</a> <a
6339 href="http://www.aleksey.com/xmlsec/">implementations for libxml2</a></li>
6340 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> and
6341 contributors maintain <a href="http://tclxml.sourceforge.net/">tcl
6342 bindings for libxml2 and libxslt</a>, as well as <a
6343 href="http://tclxml.sf.net/tkxmllint.html">tkxmllint</a> a GUI for
6344 xmllint and <a href="http://tclxml.sf.net/tkxsltproc.html">tkxsltproc</a>
6345 a GUI for xsltproc.</li>