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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 have a few person 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>2.9.2: Oct 16 2014</h3>
715 Fix for CVE-2014-3660 billion laugh variant (Daniel Veillard),<br/>
716 CVE-2014-0191 Do not fetch external parameter entities (Daniel Veillard)<br/>
720 fix memory leak xml header encoding field with XML_PARSE_IGNORE_ENC (Bart De Schuymer),<br/>
721 xmlmemory: handle realloc properly (Yegor Yefremov),<br/>
722 Python generator bug raised by the const change (Daniel Veillard),<br/>
723 Windows Critical sections not released correctly (Daniel Veillard),<br/>
724 Parser error on repeated recursive entity expansion containing &lt; (Daniel Veillard),<br/>
725 xpointer : fixing Null Pointers (Gaurav Gupta),<br/>
726 Remove Unnecessary Null check in xpointer.c (Gaurav Gupta),<br/>
727 parser bug on misformed namespace attributes (Dennis Filder),<br/>
728 Pointer dereferenced before null check (Daniel Veillard),<br/>
729 Leak of struct addrinfo in xmlNanoFTPConnect() (Gaurav Gupta),<br/>
730 Possible overflow in HTMLParser.c (Daniel Veillard),<br/>
731 python/tests/sync.py assumes Python dictionaries are ordered (John Beck),<br/>
732 Fix Enum check and missing break (Gaurav Gupta),<br/>
733 xmlIO: Handle error returns from dup() (Philip Withnall),<br/>
734 Fix a problem properly saving URIs (Daniel Veillard),<br/>
735 wrong error column in structured error when parsing attribute values (Juergen Keil),<br/>
736 wrong error column in structured error when skipping whitespace in xml decl (Juergen Keil),<br/>
737 no error column in structured error handler for xml schema validation errors (Juergen Keil),<br/>
738 Couple of Missing Null checks (Gaurav Gupta),<br/>
739 Add couple of missing Null checks (Daniel Veillard),<br/>
740 xmlschemastypes: Fix potential array overflow (Philip Withnall),<br/>
741 runtest: Fix a memory leak on parse failure (Philip Withnall),<br/>
742 xmlIO: Fix an FD leak on gzdopen() failure (Philip Withnall),<br/>
743 xmlcatalog: Fix a memory leak on quit (Philip Withnall),<br/>
744 HTMLparser: Correctly initialise a stack allocated structure (Philip Withnall),<br/>
745 Check for tmon in _xmlSchemaDateAdd() is incorrect (David Kilzer),<br/>
746 Avoid Possible Null Pointer in trio.c (Gaurav Gupta),<br/>
747 Fix processing in SAX2 in case of an allocation failure (Daniel Veillard),<br/>
748 XML Shell command "cd" does not handle "/" at end of path (Daniel Veillard),<br/>
749 Fix various Missing Null checks (Gaurav Gupta),<br/>
750 Fix a potential NULL dereference (Daniel Veillard),<br/>
751 Add a couple of misisng check in xmlRelaxNGCleanupTree (Gaurav Gupta),<br/>
752 Add a missing argument check (Gaurav Gupta),<br/>
753 Adding a check in case of allocation error (Gaurav Gupta),<br/>
754 xmlSaveUri() incorrectly recomposes URIs with rootless paths (Dennis Filder),<br/>
755 Adding some missing NULL checks (Gaurav),<br/>
756 Fixes for xmlInitParserCtxt (Daniel Veillard),<br/>
757 Fix regressions introduced by CVE-2014-0191 patch (Daniel Veillard),<br/>
758 erroneously ignores a validation error if no error callback set (Daniel Veillard),<br/>
759 xmllint was not parsing the --c14n11 flag (Sérgio Batista),<br/>
760 Avoid Possible null pointer dereference in memory debug mode (Gaurav),<br/>
761 Avoid Double Null Check (Gaurav),<br/>
762 Restore context size and position after XPATH_OP_ARG (Nick Wellnhofer),<br/>
763 Fix xmlParseInNodeContext() if node is not element (Daniel Veillard),<br/>
764 Avoid a possible NULL pointer dereference (Gaurav),<br/>
765 Fix xmlTextWriterWriteElement when a null content is given (Daniel Veillard),<br/>
766 Fix an typo 'onrest' in htmlScriptAttributes (Daniel Veillard),<br/>
767 fixing a ptotential uninitialized access (Daniel Veillard),<br/>
768 Fix an fd leak in an error case (Daniel Veillard),<br/>
769 Missing initialization for the catalog module (Daniel Veillard),<br/>
770 Handling of XPath function arguments in error case (Nick Wellnhofer),<br/>
771 Fix a couple of missing NULL checks (Gaurav),<br/>
772 Avoid a possibility of dangling encoding handler (Gaurav),<br/>
773 Fix HTML push parser to accept HTML_PARSE_NODEFDTD (Arnold Hendriks),<br/>
774 Fix a bug loading some compressed files (Mike Alexander),<br/>
775 Fix XPath node comparison bug (Gaurav),<br/>
776 Type mismatch in xmlschemas.c (Gaurav),<br/>
777 Type mismatch in xmlschemastypes.c (Gaurav),<br/>
778 Avoid a deadcode in catalog.c (Daniel Veillard),<br/>
779 run close socket on Solaris, same as we do on other platforms (Denis Pauk),<br/>
780 Fix pointer dereferenced before null check (Gaurav),<br/>
781 Fix a potential NULL dereference in tree code (Daniel Veillard),<br/>
782 Fix potential NULL pointer dereferences in regexp code (Gaurav),<br/>
783 xmllint --pretty crashed without following numeric argument (Tim Galeckas),<br/>
784 Fix XPath expressions of the form '@ns:*' (Nick Wellnhofer),<br/>
785 Fix XPath '//' optimization with predicates (Nick Wellnhofer),<br/>
786 Clear up a potential NULL dereference (Daniel Veillard),<br/>
787 Fix a possible NULL dereference (Gaurav),<br/>
788 Avoid crash if allocation fails (Daniel Veillard),<br/>
789 Remove occasional leading space in XPath number formatting (Daniel Veillard),<br/>
790 Fix handling of mmap errors (Daniel Veillard),<br/>
791 Catch malloc error and exit accordingly (Daniel Veillard),<br/>
792 missing else in xlink.c (Ami Fischman),<br/>
793 Fix a parsing bug on non-ascii element and CR/LF usage (Daniel Veillard),<br/>
794 Fix a regression in xmlGetDocCompressMode() (Daniel Veillard),<br/>
795 properly quote the namespace uris written out during c14n (Aleksey Sanin),<br/>
796 Remove premature XInclude check on URI being relative (Alexey Neyman),<br/>
797 Fix missing break on last() function for attributes (dcb),<br/>
798 Do not URI escape in server side includes (Romain Bondue),<br/>
799 Fix an error in xmlCleanupParser (Alexander Pastukhov)<br/>
802 <li>Documentation:<br/>
803 typo in error messages "colon are forbidden from..." (Daniel Veillard),<br/>
804 Fix a link to James SAX documentation old page (Daniel Veillard),<br/>
805 Fix typos in relaxng.c (Jan Pokorný),<br/>
806 Fix a doc typo (Daniel Veillard),<br/>
807 Fix typos in {tree,xpath}.c (errror) (Jan Pokorný),<br/>
808 Add limitations about encoding conversion (Daniel Veillard),<br/>
809 Fix typos in xmlschemas{,types}.c (Jan Pokorný),<br/>
810 Fix incorrect spelling entites->entities (Jan Pokorný),<br/>
811 Forgot to document 2.9.1 release, regenerate docs (Daniel Veillard)<br/>
814 <li>Portability:<br/>
815 AC_CONFIG_FILES and executable bit (Roumen Petrov),<br/>
816 remove HAVE_CONFIG_H dependency in testlimits.c (Roumen Petrov),<br/>
817 fix some tabs mixing incompatible with python3 (Roumen Petrov),<br/>
818 Visual Studio 14 CTP defines snprintf() (Francis Dupont),<br/>
819 OS400: do not try to copy unexisting doc files (Patrick Monnerat),<br/>
820 OS400: use either configure.ac or configure.in. (Patrick Monnerat),<br/>
821 os400: make-src.sh: create physical file with target CCSID (Patrick Monnerat),<br/>
822 OS400: Add some more C macros equivalent procedures. (Patrick Monnerat),<br/>
823 OS400: use C macros to implement equivalent RPG support procedures. (Patrick Monnerat),<br/>
824 OS400: implement XPath macros as procedures for ILE/RPG support. (Patrick Monnerat),<br/>
825 OS400: include in distribution tarball. (Patrick Monnerat),<br/>
826 OS400: Add README: compilation directives and OS/400 specific stuff. (Patrick Monnerat),<br/>
827 OS400: Add compilation scripts. (Patrick Monnerat),<br/>
828 OS400: ILE RPG language header files. (Patrick Monnerat),<br/>
829 OS400: implement some macros as functions for ILE/RPG language support (that as no macros). (Patrick Monnerat),<br/>
830 OS400: UTF8<-->EBCDIC wrappers for system and external library calls (Patrick Monnerat),<br/>
831 OS400: Easy character transcoding support (Patrick Monnerat),<br/>
832 OS400: iconv functions compatibility wrappers and table builder. (Patrick Monnerat),<br/>
833 OS400: create architecture directory. Implement dlfcn emulation. (Patrick Monnerat),<br/>
834 Fix building when configuring without xpath and xptr (Daniel Veillard),<br/>
835 configure: Add --with-python-install-dir (Jonas Eriksson),<br/>
836 Fix compilation with minimum and xinclude. (Nicolas Le Cam),<br/>
837 Compile out use of xmlValidateNCName() when not available. (Nicolas Le Cam),<br/>
838 Fix compilation with minimum and schematron. (Nicolas Le Cam),<br/>
839 Legacy needs xmlSAX2StartElement() and xmlSAX2EndElement(). (Nicolas Le Cam),<br/>
840 Don't use xmlValidateName() when not available. (Nicolas Le Cam),<br/>
841 Fix a portability issue on Windows (Longstreth Jon),<br/>
842 Various portability patches for OpenVMS (Jacob (Jouk) Jansen),<br/>
843 Use specific macros for portability to OS/400 (Patrick Monnerat),<br/>
844 Add macros needed for OS/400 portability (Patrick Monnerat),<br/>
845 Portability patch for fopen on OS/400 (Patrick Monnerat),<br/>
846 Portability fixes for OS/400 (Patrick Monnerat),<br/>
847 Improve va_list portability (Patrick Monnerat),<br/>
848 Portability fix (Patrick Monnerat),<br/>
849 Portability fix (Patrick Monnerat),<br/>
850 Generic portability fix (Patrick Monnerat),<br/>
851 Shortening lines in headers (Patrick Monnerat),<br/>
852 build: Use pkg-config to find liblzma in preference to AC_CHECK_LIB (Philip Withnall),<br/>
853 build: Add @LZMA_LIBS@ to libxml’s pkg-config files (Philip Withnall),<br/>
854 fix some tabs mixing incompatible with python3 (Daniel Veillard),<br/>
855 add additional defines checks for support "./configure --with-minimum" (Denis Pauk),<br/>
856 Another round of fixes for older versions of Python (Arfrever Frehtes Taifersar Arahesis),<br/>
857 python: fix drv_libxml2.py for python3 compatibility (Alexandre Rostovtsev),<br/>
858 python: Fix compiler warnings when building python3 bindings (Armin K),<br/>
859 Fix for compilation with python 2.6.8 (Petr Sumbera)<br/>
862 <li>Improvements:<br/>
863 win32/libxml2.def.src after rebuild in doc (Roumen Petrov),<br/>
864 elfgcchack.h: more legacy needs xmlSAX2StartElement() and xmlSAX2EndElement() (Roumen Petrov),<br/>
865 elfgcchack.h: add xmlXPathNodeEval and xmlXPathSetContextNode (Roumen Petrov),<br/>
866 Provide cmake module (Samuel Martin),<br/>
867 Fix a couple of issues raised by make dist (Daniel Veillard),<br/>
868 Fix and add const qualifiers (Kurt Roeckx),<br/>
869 Preparing for upcoming release of 2.9.2 (Daniel Veillard),<br/>
870 Fix zlib and lzma libraries check via command line (Dmitriy),<br/>
871 wrong error column in structured error when parsing end tag (Juergen Keil),<br/>
872 doc/news.html: small update to avoid line join while generating NEWS. (Patrick Monnerat),<br/>
873 Add methods for python3 iterator (Ron Angeles),<br/>
874 Support element node traversal in document fragments. (Kyle VanderBeek),<br/>
875 xmlNodeSetName: Allow setting the name to a substring of the currently set name (Tristan Van Berkom),<br/>
876 Added macros for argument casts (Eric Zurcher),<br/>
877 adding init calls to xml and html Read parsing entry points (Daniel Veillard),<br/>
878 Get rid of 'REPLACEMENT CHARACTER' Unicode chars in xmlschemas.c (Jan Pokorný),<br/>
879 Implement choice for name classes on attributes (Shaun McCance),<br/>
880 Two small namespace tweaks (Daniel Veillard),<br/>
881 xmllint --memory should fail on empty files (Daniel Veillard),<br/>
882 Cast encoding name to char pointer to match arg type (Nikolay Sivov)<br/>
886 Removal of old configure.in (Daniel Veillard),<br/>
887 Unreachable code in tree.c (Gaurav Gupta),<br/>
888 Remove a couple of dead conditions (Gaurav Gupta),<br/>
889 Avoid some dead code and cleanup in relaxng.c (Gaurav),<br/>
890 Drop not needed checks (Denis Pauk),<br/>
891 Fix a wrong test (Daniel Veillard)<br/>
894 <h3>2.9.1: Apr 19 2013</h3>
897 Support for Python3 (Daniel Veillard),<br/>
898 Add xmlXPathSetContextNode and xmlXPathNodeEval (Alex Bligh)<br/>
901 <li> Documentation:<br/>
902 Add documentation for xmllint --xpath (Daniel Veillard),<br/>
903 Fix the URL of the SAX documentation from James (Daniel Veillard),<br/>
904 Fix spelling of "length". (Michael Wood)<br/>
907 <li> Portability:<br/>
908 Fix python bindings with versions older than 2.7 (Daniel Veillard),<br/>
909 rebuild docs:Makefile.am (Roumen Petrov),<br/>
910 elfgcchack.h after rebuild in doc (Roumen Petrov),<br/>
911 elfgcchack for buf module (Roumen Petrov),<br/>
912 Fix a uneeded and wrong extra link parameter (Daniel Veillard),<br/>
913 Few cleanup patches for Windows (Denis Pauk),<br/>
914 Fix rpmbuild --nocheck (Mark Salter),<br/>
915 Fix for win32/configure.js and WITH_THREAD_ALLOC (Daniel Richard),<br/>
916 Fix Broken multi-arch support in xml2-config (Daniel Veillard),<br/>
917 Fix a portability issue for GCC < 3.4.0 (Daniel Veillard),<br/>
918 Windows build fixes (Daniel Richard),<br/>
919 Fix a thread portability problem (Friedrich Haubensak),<br/>
920 Downgrade autoconf requirement to 2.63 (Daniel Veillard)<br/>
924 Fix a linking error for python bindings (Daniel Veillard),<br/>
925 Fix a couple of return without value (Jüri Aedla),<br/>
926 Improve the hashing functions (Daniel Franke),<br/>
927 Improve handling of xmlStopParser() (Daniel Veillard),<br/>
928 Remove risk of lockup in dictionary initialization (Daniel Veillard),<br/>
929 Activate detection of encoding in external subset (Daniel Veillard),<br/>
930 Fix an output buffer flushing conversion bug (Mikhail Titov),<br/>
931 Fix an old bug in xmlSchemaValidateOneElement (Csaba László),<br/>
932 Fix configure cannot remove messages (Gilles Espinasse),<br/>
933 fix schema validation in combination with xsi:nil (Daniel Veillard),<br/>
934 xmlCtxtReadFile doesn't work with literal IPv6 URLs (Steve Wolf),<br/>
935 Fix a few problems with setEntityLoader (Alexey Neyman),<br/>
936 Detect excessive entities expansion upon replacement (Daniel Veillard),<br/>
937 Fix the flushing out of raw buffers on encoding conversions (Daniel,<br/>
939 Fix some buffer conversion issues (Daniel Veillard),<br/>
940 When calling xmlNodeDump make sure we grow the buffer quickly (Daniel,<br/>
942 Fix an error in the progressive DTD parsing code (Dan Winship),<br/>
943 xmllint should not load DTD by default when using the reader (Daniel,<br/>
945 Try IBM-037 when looking for EBCDIC handlers (Petr Sumbera),<br/>
946 Fix potential out of bound access (Daniel Veillard),<br/>
947 Fix large parse of file from memory (Daniel Veillard),<br/>
948 Fix a bug in the nsclean option of the parser (Daniel Veillard),<br/>
949 Fix a regression in 2.9.0 breaking validation while streaming (Daniel,<br/>
951 Remove potential calls to exit() (Daniel Veillard)<br/>
954 <li> Improvements:<br/>
955 Regenerated API, and testapi, rebuild documentation (Daniel Veillard),<br/>
956 Fix tree iterators broken by 2to3 script (Daniel Veillard),<br/>
957 update all tests for Python3 and Python2 (Daniel Veillard),<br/>
958 A few more fixes for python 3 affecting libxml2.py (Daniel Veillard),<br/>
959 Fix compilation on Python3 (Daniel Veillard),<br/>
960 Converting apibuild.py to python3 (Daniel Veillard),<br/>
961 First pass at starting porting to python3 (Daniel Veillard),<br/>
962 updated configure.in for python3 (Daniel Veillard),<br/>
963 Add support for xpathRegisterVariable in Python (Shaun McCance),<br/>
964 Added a regression tests from bug 694228 data (Daniel Veillard),<br/>
965 Cache presence of '<' in entities content (Daniel Veillard),<br/>
966 Avoid extra processing on entities (Daniel Veillard),<br/>
967 Python binding for xmlRegisterInputCallback (Alexey Neyman),<br/>
968 Python bindings: DOM casts everything to xmlNode (Alexey Neyman),<br/>
969 Define LIBXML_THREAD_ALLOC_ENABLED via xmlversion.h (Tim Starling),<br/>
970 Adding streaming validation to runtest checks (Daniel Veillard),<br/>
971 Add a --pushsmall option to xmllint (Daniel Veillard)<br/>
975 Switched comment in file to UTF-8 encoding (Daniel Veillard),<br/>
976 Extend gitignore (Daniel Veillard),<br/>
977 Silent the new python test on input (Alexey Neyman),<br/>
978 Cleanup of a duplicate test (Daniel Veillard),<br/>
979 Cleanup on duplicate test expressions (Daniel Veillard),<br/>
980 Fix compiler warning after 153cf15905cf4ec080612ada6703757d10caba1e (Patrick,<br/>
982 Spec cleanups and a fix for multiarch support (Daniel Veillard),<br/>
983 Silence a clang warning (Daniel Veillard),<br/>
984 Cleanup the Copyright to be pure MIT Licence wording (Daniel Veillard),<br/>
985 rand_seed should be static in dict.c (Wouter Van Rooy),<br/>
986 Fix typos in parser comments (Jan Pokorný)<br/>
989 <h3>2.9.0: Sep 11 2012</h3>
992 A few new API entry points,<br/>
993 More resilient push parser mode,<br/>
994 A lot of portability improvement,<br/>
995 Faster XPath evaluation<br/>
998 <li> Documentation:<br/>
999 xml2-config.1 markup error (Christian Weisgerber),<br/>
1000 libxml(3) manpage typo fix (John Bradshaw),<br/>
1001 More cleanups to the documentation part of libxml2 (Daniel Richard G)<br/>
1004 <li> Portability:<br/>
1005 Bug 676544 - fails to build with --without-sax1 (Akira TAGOH),<br/>
1006 fix builds not having stdint.h (Rob Richards),<br/>
1007 GetProcAddressA is available only on WinCE (Daniel Veillard),<br/>
1008 More updates and cleanups on autotools and Makefiles (Daniel Richard G),<br/>
1009 More changes for Win32 compilation (Eric Zurcher),<br/>
1010 Basic changes for Win32 builds of release 2.9.0: compile buf.c (Eric Zurcher),<br/>
1011 Bundles all generated files for python into the distribution (Daniel Richard G),<br/>
1012 Fix compiler warnings of wincecompat.c (Patrick Gansterer),<br/>
1013 Fix non __GNUC__ build (Patrick Gansterer),<br/>
1014 Fix windows unicode build (Patrick Gansterer),<br/>
1015 clean redefinition of {v}snprintf in C-source (Roumen Petrov),<br/>
1016 use xmlBuf... if DEBUG_INPUT is defined (Roumen Petrov),<br/>
1017 fix runtests to use pthreads support for various Unix platforms (Daniel Richard G),<br/>
1018 Various "make distcheck" and portability fixups 2nd part (Daniel Richard G),<br/>
1019 Various "make distcheck" and portability fixups (Daniel Richard G),<br/>
1020 Fix compilation on older Visual Studio (Daniel Veillard)<br/>
1023 <li> Bug Fixes:<br/>
1024 Change the XPath code to percolate allocation errors (Daniel Veillard),<br/>
1025 Fix reuse of xmlInitParser (Daniel Veillard),<br/>
1026 Fix potential crash on entities errors (Daniel Veillard),<br/>
1027 initialize var (Rob Richards),<br/>
1028 Fix the XPath arity check to also check the XPath stack limits (Daniel Veillard),<br/>
1029 Fix problem with specific and generic error handlers (Pietro Cerutti),<br/>
1030 Avoid a potential infinite recursion (Daniel Veillard),<br/>
1031 Fix an XSD error when generating internal automata (Daniel Veillard),<br/>
1032 Patch for xinclude of text using multibyte characters (Vitaly Ostanin),<br/>
1033 Fix a segfault on XSD validation on pattern error (Daniel Veillard),<br/>
1034 Fix missing xmlsave.h module which was ignored in recent builds (Daniel Veillard),<br/>
1035 Add a missing element check (Daniel Veillard),<br/>
1036 Adding various checks on node type though the API (Daniel Veillard),<br/>
1037 Namespace nodes can't be unlinked with xmlUnlinkNode (Daniel Veillard),<br/>
1038 Fix make dist to include new private header files (Daniel Veillard),<br/>
1039 More fixups on the push parser behaviour (Daniel Veillard),<br/>
1040 Strengthen behaviour of the push parser in problematic situations (Daniel Veillard),<br/>
1041 Enforce XML_PARSER_EOF state handling through the parser (Daniel Veillard),<br/>
1042 Fixup limits parser (Daniel Veillard),<br/>
1043 Do not fetch external parsed entities (Daniel Veillard),<br/>
1044 Fix an error in previous commit (Aron Xu),<br/>
1045 Fix entities local buffers size problems (Daniel Veillard),<br/>
1046 Fix parser local buffers size problems (Daniel Veillard),<br/>
1047 Fix a failure to report xmlreader parsing failures (Daniel Veillard)<br/>
1050 <li> Improvements:<br/>
1051 Keep libxml2.syms when running "make distclean" (Daniel Veillard),<br/>
1052 Allow to set the quoting character of an xmlWriter (Csaba Raduly),<br/>
1053 Keep non-significant blanks node in HTML parser (Daniel Veillard),<br/>
1054 Add a forbidden variable error number and message to XPath (Daniel Veillard),<br/>
1055 Support long path names on WNT (Michael Stahl),<br/>
1056 Improve HTML escaping of attribute on output (Daniel Veillard),<br/>
1057 Handle ICU_LIBS as LIBADD, not LDFLAGS to prevent linking errors (Arfrever Frehtes Taifersar Arahesis),<br/>
1058 Switching XPath node sorting to Timsort (Vojtech Fried),<br/>
1059 Optimizing '//' in XPath expressions (Nick Wellnhofer),<br/>
1060 Expose xmlBufShrink in the public tree API (Daniel Veillard),<br/>
1061 Visible HTML elements close the head tag (Conrad Irwin),<br/>
1062 Fix file and line report for XSD SAX and reader streaming validation (Daniel Veillard),<br/>
1063 Fix const qualifyer to definition of xmlBufferDetach (Daniel Veillard),<br/>
1064 minimize use of HAVE_CONFIG_H (Roumen Petrov),<br/>
1065 fixup regression in Various "make distcheck" and portability fixups (Roumen Petrov),<br/>
1066 Add support for big line numbers in error reporting (Daniel Veillard),<br/>
1067 Avoid using xmlBuffer for serialization (Daniel Veillard),<br/>
1068 Improve compatibility between xmlBuf and xmlBuffer (Daniel Veillard),<br/>
1069 Provide new accessors for xmlOutputBuffer (Daniel Veillard),<br/>
1070 Improvements for old buffer compatibility (Daniel Veillard),<br/>
1071 Expand the limit test program (Daniel Veillard),<br/>
1072 Improve error reporting on parser errors (Daniel Veillard),<br/>
1073 Implement some default limits in the XPath module (Daniel Veillard),<br/>
1074 Introduce some default parser limits (Daniel Veillard),<br/>
1075 Cleanups and new limit APIs for dictionaries (Daniel Veillard),<br/>
1076 Fixup for buf.c (Daniel Veillard),<br/>
1077 Cleanup URI module memory allocation code (Daniel Veillard),<br/>
1078 Extend testlimits (Daniel Veillard),<br/>
1079 More avoid quadratic behaviour (Daniel Veillard),<br/>
1080 Impose a reasonable limit on PI size (Daniel Veillard),<br/>
1081 first version of testlimits new test (Daniel Veillard),<br/>
1082 Avoid quadratic behaviour in some push parsing cases (Daniel Veillard),<br/>
1083 Impose a reasonable limit on comment size (Daniel Veillard),<br/>
1084 Impose a reasonable limit on attribute size (Daniel Veillard),<br/>
1085 Harden the buffer code and make it more compatible (Daniel Veillard),<br/>
1086 More cleanups for input/buffers code (Daniel Veillard),<br/>
1087 Cleanup function xmlBufResetInput(),<br/> to set input from Buffer (Daniel Veillard)
1088 Swicth the test program for characters to new input buffers (Daniel Veillard),<br/>
1089 Convert the HTML tree module to the new buffers (Daniel Veillard),<br/>
1090 Convert of the HTML parser to new input buffers (Daniel Veillard),<br/>
1091 Convert the writer to new output buffer and save APIs (Daniel Veillard),<br/>
1092 Convert XMLReader to the new input buffers (Daniel Veillard),<br/>
1093 New saving functions using xmlBuf and conversion (Daniel Veillard),<br/>
1094 Provide new xmlBuf based saving functions (Daniel Veillard),<br/>
1095 Convert XInclude to the new input buffers (Daniel Veillard),<br/>
1096 Convert catalog code to the new input buffers (Daniel Veillard),<br/>
1097 Convert C14N to the new Input buffer (Daniel Veillard),<br/>
1098 Convert xmlIO.c to the new input and output buffers (Daniel Veillard),<br/>
1099 Convert XML parser to the new input buffers (Daniel Veillard),<br/>
1100 Incompatible change to the Input and Output buffers (Daniel Veillard),<br/>
1101 Adding new encoding function to deal with the new structures (Daniel Veillard),<br/>
1102 Convert XPath to xmlBuf (Daniel Veillard),<br/>
1103 Adding a new buf module for buffers (Daniel Veillard),<br/>
1104 Memory error within SAX2 reuse common framework (Daniel Veillard),<br/>
1105 Fix xmllint --xpath node initialization (Daniel Veillard)<br/>
1109 Various cleanups to avoid compiler warnings (Daniel Veillard),<br/>
1110 Big space and tab cleanup (Daniel Veillard),<br/>
1111 Followup to LibXML2 docs/examples cleanup patch (Daniel Veillard),<br/>
1112 Second round of cleanups for LibXML2 docs/examples (Daniel Richard),<br/>
1113 Remove all .cvsignore as they are not used anymore (Daniel Veillard),<br/>
1114 Fix a Timsort function helper comment (Daniel Veillard),<br/>
1115 Small cleanup for valgrind target (Daniel Veillard),<br/>
1116 Patch for portability of latin characters in C files (Daniel Veillard),<br/>
1117 Cleanup some of the parser code (Daniel Veillard),<br/>
1118 Fix a variable name in comment (Daniel Veillard),<br/>
1119 Regenerated testapi.c (Daniel Veillard),<br/>
1120 Regenerating docs and API files (Daniel Veillard),<br/>
1121 Small cleanup of unused variables in test (Daniel Veillard),<br/>
1122 Expand .gitignore with more files (Daniel Veillard)<br/>
1125 <h3>2.8.0: May 23 2012</h3>
1128 add lzma compression support (Anders F Bjorklund)
1132 xmlcatalog: Add uri and delegateURI to possible add types in man page. (Ville Skyttä),
1133 Update README.tests (Daniel Veillard),
1134 URI handling code is not OOM resilient (Daniel Veillard),
1135 Fix an error in comment (Daniel Veillard),
1136 Fixed bug #617016 (Daniel Mustieles),
1137 Fixed two typos in the README document (Daniel Neel),
1138 add generated html files (Anders F Bjorklund),
1139 Clarify the need to use xmlFreeNode after xmlUnlinkNode (Daniel Veillard),
1140 Improve documentation a bit (Daniel Veillard),
1141 Updated URL for lxml python bindings (Daniel Veillard)
1145 Restore code for Windows compilation (Daniel Veillard),
1146 Remove git error message during configure (Christian Dywan),
1147 xmllint: Build fix for endTimer if !defined(HAVE_GETTIMEOFDAY) (Patrick R. Gansterer),
1148 remove a bashism in confgure.in (John Hein),
1149 undef ERROR if already defined (Patrick R. Gansterer),
1150 Fix library problems with mingw-w64 (Michael Cronenworth),
1151 fix windows build. ifdef addition from bug 666491 makes no sense (Rob Richards),
1152 prefer native threads on win32 (Sam Thursfield),
1153 Allow to compile with Visual Studio 2010 (Thomas Lemm),
1154 Fix mingw's snprintf configure check (Andoni Morales),
1155 fixed a 64bit big endian issue (Marcus Meissner),
1156 Fix portability failure if netdb.h lacks NO_ADDRESS (Daniel Veillard),
1157 Fix windows build from lzma addition (Rob Richards),
1158 autogen: Only check for libtoolize (Colin Walters),
1159 Fix the Windows build files (Patrick von Reth),
1160 634846 Remove a linking option breaking Windows VC10 (Daniel Veillard),
1161 599241 fix an initialization problem on Win64 (Andrew W. Nosenko),
1162 fix win build (Rob Richards)
1166 Part for rand_r checking missing (Daniel Veillard),
1167 Cleanup on randomization (Daniel Veillard),
1168 Fix undefined reference in python module (Pacho Ramos),
1169 Fix a race in xmlNewInputStream (Daniel Veillard),
1170 Fix weird streaming RelaxNG errors (Noam),
1171 Fix various bugs in new code raised by the API checking (Daniel Veillard),
1172 Fix various problems with "make dist" (Daniel Veillard),
1173 Fix a memory leak in the xzlib code (Daniel Veillard),
1174 HTML parser error with <noscript> in the <head> (Denis Pauk),
1175 XSD: optional element in complex type extension (Remi Gacogne),
1176 Fix html serialization error and htmlSetMetaEncoding() (Daniel Veillard),
1177 Fix a wrong return value in previous patch (Daniel Veillard),
1178 Fix an uninitialized variable use (Daniel Veillard),
1179 Fix a compilation problem with --minimum (Brandon Slack),
1180 Remove redundant and ungarded include of resolv.h (Daniel Veillard),
1181 xinclude with parse="text" does not use the entity loader (Shaun McCance),
1182 Allow to parse 1 byte HTML files (Denis Pauk),
1183 Patch that fixes the skipping of the HTML_PARSE_NOIMPLIED flag (Martin Schröder),
1184 Avoid memory leak if xmlParserInputBufferCreateIO fails (Lin Yi-Li),
1185 Prevent an infinite loop when dumping a node with encoding problems (Timothy Elliott),
1186 xmlParseNodeInContext problems with an empty document (Tim Elliott),
1187 HTML element position is not detected propperly (Pavel Andrejs),
1188 Fix an off by one pointer access (Jüri Aedla),
1189 Try to fix a problem with entities in SAX mode (Daniel Veillard),
1190 Fix a crash with xmllint --path on empty results (Daniel Veillard),
1191 Fixed bug #667946 (Daniel Mustieles),
1192 Fix a logic error in Schemas Component Constraints (Ryan Sleevi),
1193 Fix a wrong enum type use in Schemas Types (Nico Weber),
1194 Fix SAX2 builder in case of undefined attributes namespace (Daniel Veillard),
1195 Fix SAX2 builder in case of undefined element namespaces (Daniel Veillard),
1196 fix reference to STDOUT_FILENO on MSVC (Tay Ray Chuan),
1197 fix a pair of possible out of array char references (Daniel Veillard),
1198 Fix an allocation error when copying entities (Daniel Veillard),
1199 Make sure the parser returns when getting a Stop order (Chris Evans),
1200 Fix some potential problems on reallocation failures(parser.c) (Xia Xinfeng),
1201 Fix a schema type duration comparison overflow (Daniel Veillard),
1202 Fix an unimplemented part in RNG value validation (Daniel Veillard),
1203 Fix missing error status in XPath evaluation (Daniel Veillard),
1204 Hardening of XPath evaluation (Daniel Veillard),
1205 Fix an off by one error in encoding (Daniel Veillard),
1206 Fix RELAX NG include bug #655288 (Shaun McCance),
1207 Fix XSD validation bug #630130 (Toyoda Eizi),
1208 Fix some potential problems on reallocation failures (Chris Evans),
1209 __xmlRaiseError: fix use of the structured callback channel (Dmitry V. Levin),
1210 __xmlRaiseError: fix the structured callback channel's data initialization (Dmitry V. Levin),
1211 Fix memory corruption when xmlParseBalancedChunkMemoryInternal is called from xmlParseBalancedChunk (Rob Richards),
1212 Small fix for previous commit (Daniel Veillard),
1213 Fix a potential freeing error in XPath (Daniel Veillard),
1214 Fix a potential memory access error (Daniel Veillard),
1215 Reactivate the shared library versionning script (Daniel Veillard)
1219 use mingw C99 compatible functions {v}snprintf instead those from MSVC runtime (Roumen Petrov),
1220 New symbols added for the next release (Daniel Veillard),
1221 xmlTextReader bails too quickly on error (Andy Lutomirski),
1222 Use a hybrid allocation scheme in xmlNodeSetContent (Conrad Irwin),
1223 Use buffers when constructing string node lists. (Conrad Irwin),
1224 Add HTML parser support for HTML5 meta charset encoding declaration (Denis Pauk),
1225 wrong message for double hyphen in comment XML error (Bryan Henderson),
1226 Fix "make tst" to grab lzma lib too (Daniel Veillard),
1227 Add "whereis" command to xmllint shell (Ryan),
1228 Improve xmllint shell (Ryan),
1229 add function xmlTextReaderRelaxNGValidateCtxt() (Noam Postavsky),
1230 Add --system support to autogen.sh (Daniel Veillard),
1231 Add hash randomization to hash and dict structures (Daniel Veillard),
1232 included xzlib in dist (Anders F Bjorklund),
1233 move xz/lzma helpers to separate included files (Anders F Bjorklund),
1234 add generated devhelp files (Anders F Bjorklund),
1235 add XML_WITH_LZMA to api (Anders F Bjorklund),
1236 autogen.sh: Honor NOCONFIGURE environment variable (Colin Walters),
1237 Improve the error report on undefined REFs (Daniel Veillard),
1238 Add exception for new W3C PI xml-model (Daniel Veillard),
1239 Add options to ignore the internal encoding (Daniel Veillard),
1240 testapi: use the right type for the check (Stefan Kost),
1241 various: handle return values of write calls (Stefan Kost),
1242 testWriter: xmlTextWriterWriteFormatElement wants an int instead of a long int (Stefan Kost),
1243 runxmlconf: update to latest testsuite version (Stefan Kost),
1244 configure: add -Wno-long-long to CFLAGS (Stefan Kost),
1245 configure: support silent automake rules if possible (Stefan Kost),
1246 xmlmemory: add a cast as size_t has no portable printf modifier (Stefan Kost),
1247 __xmlRaiseError: remove redundant schannel initialization (Dmitry V. Levin),
1248 __xmlRaiseError: do cheap code check early (Dmitry V. Levin)
1252 Cleanups before 2.8.0-rc2 (Daniel Veillard),
1253 Avoid an extra operation (Daniel Veillard),
1254 Remove vestigial de-ANSI-fication support. (Javier Jardón),
1255 autogen.sh: Fix typo (Javier Jardón),
1256 Do not use unsigned but unsigned int (Daniel Veillard),
1257 Remove two references to u_short (Daniel Veillard),
1258 Fix -Wempty-body warning from clang (Nico Weber),
1259 Cleanups of lzma support (Daniel Veillard),
1260 Augment the list of ignored files (Daniel Veillard),
1261 python: remove unused variable (Stefan Kost),
1262 python: flag two unused args (Stefan Kost),
1263 configure: acconfig.h is deprecated since autoconf-2.50 (Stefan Kost),
1264 xpath: remove unused variable (Stefan Kost)
1267 <h3>2.7.8: Nov 4 2010</h3>
1270 480323 add code to plug in ICU converters by default (Giuseppe Iuculano),
1271 Add xmlSaveOption XML_SAVE_WSNONSIG (Adam Spragg)
1274 Fix devhelp documentation installation (Mike Hommey),
1275 Fix web site encoding problems (Daniel Veillard),
1276 Fix a couple of typo in HTML parser error messages (Michael Day),
1277 Forgot to update the news page for 0.7.7 (Daniel Veillard)
1280 607273 Fix python detection on MSys/Windows (LRN),
1281 614087 Fix Socket API usage to allow Windows64 compilation (Ozkan Sezer),
1282 Fix compilation with Clang (Koop Mast),
1283 Fix Win32 build (Rob Richards)
1286 595789 fix a remaining potential Solaris problem (Daniel Veillard),
1287 617468 fix progressive HTML parsing with style using "'" (Denis Pauk),
1288 616478 Fix xmllint shell write command (Gwenn Kahz),
1289 614005 Possible erroneous HTML parsing on unterminated script (Pierre Belzile),
1290 627987 Fix XSD IDC errors in imported schemas (Jim Panetta),
1291 629325 XPath rounding errors first cleanup (Phil Shafer),
1292 630140 fix iso995x encoding error (Daniel Veillard),
1293 make sure htmlCtxtReset do reset the disableSAX field (Daniel Veillard),
1294 Fix a change of semantic on XPath preceding and following axis (Daniel Veillard),
1295 Fix a potential segfault due to weak symbols on pthreads (Mike Hommey),
1296 Fix a leak in XPath compilation (Daniel Veillard),
1297 Fix the semantic of XPath axis for namespace/attribute context nodes (Daniel Veillard),
1298 Avoid a descriptor leak in catalog loading code (Carlo Bramini),
1299 Fix a small bug in XPath evaluation code (Marius Wachtler),
1300 Fix handling of XML-1.0 XML namespace declaration (Daniel Veillard),
1301 Fix errors in XSD double validation check (Csaba Raduly),
1302 Fix handling of apos in URIs (Daniel Veillard),
1303 xmlTextReaderReadOuterXml should handle DTD (Rob Richards),
1304 Autogen.sh needs to create m4 directory (Rob Richards)
1307 606592 update language ID parser to RFC 5646 (Daniel Veillard),
1308 Sort python generated stubs (Mike Hommey),
1309 Add an HTML parser option to avoid a default doctype (Daniel Veillard)
1312 618831 don't ship generated files in git (Adrian Bunk),
1313 Switch from the obsolete mkinstalldirs to AC_PROG_MKDIR_P (Adrian Bunk),
1314 Various cleanups on encoding handling (Daniel Veillard),
1315 Fix xmllint to use format=1 for default formatting (Adam Spragg),
1316 Force _xmlSaveCtxt.format to be 0 or 1 (Adam Spragg),
1317 Cleanup encoding pointer comparison (Nikolay Sivov),
1318 Small code cleanup on previous patch (Daniel Veillard)
1321 <h3>2.7.7: Mar 15 2010</h3>
1324 Adding a --xpath option to xmllint (Daniel Veillard),
1325 Make HTML parser non-recursive (Eugene Pimenov)
1328 relaxng.c: cast to allow compilation with sun studio 11 (Ben Walton),
1329 Fix build failure on Sparc solaris (Roumen Petrov),
1330 use autoreconf in autogen.sh (Daniel Veillard),
1331 Fix build with mingw (Roumen Petrov),
1332 Upgrade some of the configure and autogen (Daniel Veillard),
1333 Fix relaxNG tests in runtest for Windows runtest.c: initialize ret (Rob Richards),
1334 Fix a const warning in xmlNodeSetBase (Martin Trappel),
1335 Fix python generator to not use deprecated xmllib (Daniel Veillard),
1336 Update some automake files (Daniel Veillard),
1337 598785 Fix nanohttp on Windows (spadix)
1340 libxml violates the zlib interface and crashes (Mark Adler),
1341 Fix broken escape behaviour in regexp ranges (Daniel Veillard),
1342 Fix missing win32 libraries in libxml-2.0.pc (Volker Grabsch),
1343 Fix detection of python linker flags (Daniel Macks),
1344 fix build error in libxml2/python (Paul Smith),
1345 ChunkParser: Incorrect decoding of small xml files (Raul Hudea),
1346 htmlCheckEncoding doesn't update input-end after shrink (Eugene Pimenov),
1347 Fix a missing #ifdef (Daniel Veillard),
1348 Fix encoding selection for xmlParseInNodeContext (Daniel Veillard),
1349 xmlPreviousElementSibling mistake (François Delyon),
1350 608773 add a missing check in xmlGROW (Daniel Veillard),
1351 Fix xmlParseInNodeContext for HTML content (Daniel Veillard),
1352 Fix lost namespace when copying node * tree.c: reconcile namespace if not found (Rob Richards),
1353 Fix some missing commas in HTML element lists (Eugene Pimenov),
1354 Correct variable type to unsigned (Nikolay Sivov),
1355 Recognize ID attribute in HTML without DOCTYPE (Daniel Veillard),
1356 Fix memory leak in xmlXPathEvalExpression() (Martin),
1357 Fix an init bug in global.c (Kai Henning),
1358 Fix xmlNodeSetBase() comment (Daniel Veillard),
1359 Fix broken escape behaviour in regexp ranges (Daniel Veillard),
1360 Don't give default HTML boolean attribute values in parser (Daniel Veillard),
1361 xmlCtxtResetLastError should reset ctxt-errNo (Daniel Veillard)
1364 Cleanup a couple of weirdness in HTML parser (Eugene Pimenov)
1367 <h3>2.7.6: Oct 6 2009</h3>
1370 Restore thread support in default configuration (Andrew W. Nosenko),
1371 URI with no path parsing problem (Daniel Veillard),
1372 Minor patch for conditional defines in threads.c (Eric Zurcher)
1375 <h3>2.7.5: Sep 24 2009</h3>
1378 Restore behavior of --with-threads without argument (Andrew W. Nosenko),
1379 Fix memory leak when doc is NULL (Rob Richards),
1380 595792 fixing a RelaxNG bug introduced in 2.7.4 (Daniel Veillard),
1381 Fix a Relaxng bug raised by libvirt test suite (Daniel Veillard),
1382 Fix a parsing problem with little data at startup (Daniel Veillard),
1383 link python module with python library (Frederic Crozat),
1384 594874 Forgot an fclose in xmllint (Daniel Veillard)
1387 Adding symbols.xml to EXTRA_DIST (Daniel Veillard)
1390 <h3>2.7.4: Sep 10 2009</h3>
1393 Switch to GIT (GNOME),
1394 Add symbol versioning to libxml2 shared libs (Daniel Veillard)
1397 593857 try to work around thread pbm MinGW 4.4 (Daniel Veillard),
1398 594250 rename ATTRIBUTE_ALLOC_SIZE to avoid clashes (Daniel Veillard),
1399 Fix Windows build * relaxng.c: fix windows build (Rob Richards),
1400 Fix the globals.h to use XMLPUBFUN (Paul Smith),
1401 Problem with extern extern in header (Daniel Veillard),
1402 Add -lnetwork for compiling on Haiku (Scott McCreary),
1403 Runtest portability patch for Solaris (Tim Rice),
1404 Small patch to accomodate the Haiku OS (Scott McCreary),
1405 584605 package VxWorks folder in the distribution (Daniel Veillard),
1406 574017 Realloc too expensive on most platform (Daniel Veillard),
1407 Fix windows build (Rob Richards),
1408 545579 doesn't compile without schema support (Daniel Veillard),
1409 xmllint use xmlGetNodePath when not compiled in (Daniel Veillard),
1410 Try to avoid __imp__xmlFree link trouble on msys (Daniel Veillard),
1411 Allow to select the threading system on Windows (LRN),
1412 Fix Solaris binary links, cleanups (Daniel Veillard),
1413 Bug 571059 â
\80\93 MSVC doesn't work with the bakefile (Intron),
1414 fix ATTRIBUTE_PRINTF header clash (Belgabor and Mike Hommey),
1415 fixes for Borland/CodeGear/Embarcadero compilers (Eric Zurcher)
1418 544910 typo: "renciliateNs" (Leonid Evdokimov),
1419 Add VxWorks to list of OSes (Daniel Veillard),
1420 Regenerate the documentation and update for git (Daniel Veillard),
1421 560524 ¿ xmlTextReaderLocalName description (Daniel Veillard),
1422 Added sponsoring by AOE media for the server (Daniel Veillard),
1423 updated URLs for GNOME (Vincent Lefevre),
1424 more warnings about xmlCleanupThreads and xmlCleanupParser (Daniel Veillard)
1427 594514 memory leaks - duplicate initialization (MOD),
1428 Wrong block opening in htmlNodeDumpOutputInternal (Daniel Veillard),
1429 492317 Fix Relax-NG validation problems (Daniel Veillard),
1430 558452 fight with reg test and error report (Daniel Veillard),
1431 558452 RNG compilation of optional multiple child (Daniel Veillard),
1432 579746 XSD validation not correct / nilable groups (Daniel Veillard),
1433 502960 provide namespace stack when parsing entity (Daniel Veillard),
1434 566012 part 2 fix regresion tests and push mode (Daniel Veillard),
1435 566012 autodetected encoding and encoding conflict (Daniel Veillard),
1436 584220 xpointer(/) and xinclude problems (Daniel Veillard),
1437 587663 Incorrect Attribute-Value Normalization (Daniel Veillard),
1438 444994 HTML chunked failure for attribute with <> (Daniel Veillard),
1439 Fix end of buffer char being split in XML parser (Daniel Veillard),
1440 Non ASCII character may be split at buffer end (Adiel Mittmann),
1441 440226 Add xmlXIncludeProcessTreeFlagsData API (Stefan Behnel),
1442 572129 speed up parsing of large HTML text nodes (Markus Kull),
1443 Fix HTML parsing with 0 character in CDATA (Daniel Veillard),
1444 Fix SetGenericErrorFunc and SetStructured clash (Wang Lam),
1445 566012 Incomplete EBCDIC parsing support (Martin Kogler),
1446 541335 HTML avoid creating 2 head or 2 body element (Daniel Veillard),
1447 541237 error correcting missing end tags in HTML (Daniel Veillard),
1448 583439 missing line numbers in push mode (Daniel Veillard),
1449 587867 xmllint --html --xmlout serializing as HTML (Daniel Veillard),
1450 559501 avoid select and use poll for nanohttp (Raphael Prevost),
1451 559410 - Regexp bug on (...)? constructs (Daniel Veillard),
1452 Fix a small problem on previous HTML parser patch (Daniel Veillard),
1453 592430 - HTML parser runs into endless loop (Daniel Veillard),
1454 447899 potential double free in xmlFreeTextReader (Daniel Veillard),
1455 446613 small validation bug mixed content with NS (Daniel Veillard),
1456 Fix the problem of revalidating a doc with RNG (Daniel Veillard),
1457 Fix xmlKeepBlanksDefault to not break indent (Nick Wellnhofer),
1458 512131 refs from externalRef part need to be added (Daniel Veillard),
1459 512131 crash in xmlRelaxNGValidateFullElement (Daniel Veillard),
1460 588441 allow '.' in HTML Names even if invalid (Daniel Veillard),
1461 582913 Fix htmlSetMetaEncoding() to be nicer (Daniel Veillard),
1462 579317 Try to find the HTML encoding information (Daniel Veillard),
1463 575875 don't output charset=html (Daniel Veillard),
1464 571271 fix semantic of xsd:all with minOccurs=0 (Daniel Veillard),
1465 570702 fix a bug in regexp determinism checking (Daniel Veillard),
1466 567619 xmlValidateNotationUse missing param test (Daniel Veillard),
1467 574393 ¿ utf-8 filename magic for compressed files (Hans Breuer),
1468 Fix a couple of problems in the parser (Daniel Veillard),
1469 585505 ¿ Document ids and refs populated by XSD (Wayne Jensen),
1470 582906 XSD validating multiple imports of the same schema (Jason Childs),
1471 Bug 582887 ¿ problems validating complex schemas (Jason Childs),
1472 Bug 579729 ¿ fix XSD schemas parsing crash (Miroslav Bajtos),
1473 576368 ¿ htmlChunkParser with special attributes (Jiri Netolicky),
1474 Bug 565747 ¿ relax anyURI data character checking (Vincent Lefevre),
1475 Preserve attributes of include start on tree copy (Petr Pajas),
1476 Skip silently unrecognized XPointer schemes (Jakub Wilk),
1477 Fix leak on SAX1, xmllint --sax1 option and debug (Daniel Veillard),
1478 potential NULL dereference on non-glibc (Jim Meyering),
1479 Fix an XSD validation crash (Daniel Veillard),
1480 Fix a regression in streaming entities support (Daniel Veillard),
1481 Fix a couple of ABI issues with C14N 1.1 (Aleksey Sanin),
1482 Aleksey Sanin support for c14n 1.1 (Aleksey Sanin),
1483 reader bug fix with entities (Daniel Veillard),
1484 use options from current parser ctxt for external entities (Rob Richards),
1485 581612 use %s to printf strings (Christian Persch),
1486 584605 change the threading initialization sequence (Igor Novoseltsev),
1487 580705 keep line numbers in HTML parser (Aaron Patterson),
1488 581803 broken HTML table attributes init (Roland Steiner),
1489 do not set error code in xmlNsWarn (Rob Richards),
1490 564217 fix structured error handling problems,
1491 reuse options from current parser for entities (Rob Richards),
1492 xmlXPathRegisterNs should not allow enpty prefixes (Daniel Veillard),
1493 add a missing check in xmlAddSibling (Kris Breuker),
1494 avoid leaks on errors (Jinmei Tatuya)
1497 Chasing dead assignments reported by clang-scan (Daniel Veillard),
1498 A few more safety cleanup raised by scan (Daniel Veillard),
1499 Fixing assorted potential problems raised by scan (Daniel Veillard),
1500 Potential uninitialized arguments raised by scan (Daniel Veillard),
1501 Fix a bunch of scan 'dead increments' and cleanup (Daniel Veillard),
1502 Remove a pedantic warning (Daniel Veillard),
1503 555833 always use rm -f in uninstall-local (Daniel Veillard),
1504 542394 xmlRegisterOutputCallbacks MAX_INPUT_CALLBACK (Daniel Veillard),
1505 Autoregenerate libxml2.syms automated checkings (Daniel Veillard),
1506 Make xmlRecoverDoc const (Martin Trappel) (Daniel Veillard),
1507 Both args of xmlStrcasestr are const (Daniel Veillard),
1508 hide the nbParse* variables used for debugging (Mike Hommey),
1509 570806 changed include of config.h (William M. Brack),
1510 cleanups and error reports when xmlTextWriterVSprintf fails (Jinmei Tatuya)
1513 <h3>2.7.3: Jan 18 2009</h3>
1515 <li>Build fix: fix build when HTML support is not included.</li>
1516 <li>Bug fixes: avoid memory overflow in gigantic text nodes,
1517 indentation problem on the writed (Rob Richards),
1518 xmlAddChildList pointer problem (Rob Richards and Kevin Milburn),
1519 xmlAddChild problem with attribute (Rob Richards and Kris Breuker),
1520 avoid a memory leak in an edge case (Daniel Zimmermann),
1521 deallocate some pthread data (Alex Ott).</li>
1522 <li>Improvements: configure option to avoid rebuilding docs (Adrian Bunk),
1523 limit text nodes to 10MB max by default, add element traversal
1524 APIs, add a parser option to enable pre 2.7 SAX behavior (Rob Richards),
1525 add gcc malloc checking (Marcus Meissner), add gcc printf like functions
1526 parameters checking (Marcus Meissner).</li>
1528 <h3>2.7.2: Oct 3 2008</h3>
1530 <li>Portability fix: fix solaris compilation problem, fix compilation
1531 if XPath is not configured in</li>
1532 <li>Bug fixes: nasty entity bug introduced in 2.7.0, restore old behaviour
1533 when saving an HTML doc with an xml dump function, HTML UTF-8 parsing
1534 bug, fix reader custom error handlers (Riccardo Scussat)
1535 <li>Improvement: xmlSave options for more flexibility to save as
1536 XML/HTML/XHTML, handle leading BOM in HTML documents</li>
1539 <h3>2.7.1: Sep 1 2008</h3>
1541 <li>Portability fix: Borland C fix (Moritz Both)</li>
1542 <li>Bug fixes: python serialization wrappers, XPath QName corner
1543 case handking and leaks (Martin)</li>
1544 <li>Improvement: extend the xmlSave to handle HTML documents and trees</li>
1545 <li>Cleanup: python serialization wrappers</li>
1548 <h3>2.7.0: Aug 30 2008</h3>
1550 <li>Documentation: switch ChangeLog to UTF-8, improve mutithreads and
1551 xmlParserCleanup docs</li>
1552 <li>Portability fixes: Older Win32 platforms (Rob Richards), MSVC
1553 porting fix (Rob Richards), Mac OS X regression tests (Sven Herzberg),
1554 non GNUCC builds (Rob Richards), compilation on Haiku (Andreas Färber)
1556 <li>Bug fixes: various realloc problems (Ashwin), potential double-free
1557 (Ashwin), regexp crash, icrash with invalid whitespace facets (Rob
1558 Richards), pattern fix when streaming (William Brack), various XML
1559 parsing and validation fixes based on the W3C regression tests, reader
1560 tree skipping function fix (Ashwin), Schemas regexps escaping fix
1561 (Volker Grabsch), handling of entity push errors (Ashwin), fix a slowdown
1562 when encoder cant serialize characters on output</li>
1563 <li>Code cleanup: compilation fix without the reader, without the output
1564 (Robert Schwebel), python whitespace (Martin), many space/tabs cleanups,
1565 serious cleanup of the entity handling code</li>
1566 <li>Improvement: switch parser to XML-1.0 5th edition, add parsing flags
1567 for old versions, switch URI parsing to RFC 3986,
1568 add xmlSchemaValidCtxtGetParserCtxt (Holger Kaelberer),
1569 new hashing functions for dictionnaries (based on Stefan Behnel work),
1570 improve handling of misplaced html/head/body in HTML parser, better
1571 regression test tools and code coverage display, better algorithms
1572 to detect various versions of the billion laughts attacks, make
1573 arbitrary parser limits avoidable as a parser option</li>
1575 <h3>2.6.32: Apr 8 2008</h3>
1577 <li>Documentation: returning heap memory to kernel (Wolfram Sang),
1578 trying to clarify xmlCleanupParser() use, xmlXPathContext improvement
1579 (Jack Jansen), improve the *Recover* functions documentation,
1580 XmlNodeType doc link fix (Martijn Arts)</li>
1581 <li>Bug fixes: internal subset memory leak (Ashwin), avoid problem with
1582 paths starting with // (Petr Sumbera), streaming XSD validation callback
1583 patches (Ashwin), fix redirection on port other than 80 (William Brack),
1584 SAX2 leak (Ashwin), XInclude fragment of own document (Chris Ryan),
1585 regexp bug with '.' (Andrew Tosh), flush the writer at the end of the
1586 document (Alfred Mickautsch), output I/O bug fix (William Brack),
1587 writer CDATA output after a text node (Alex Khesin), UTF-16 encoding
1588 detection (William Brack), fix handling of empty CDATA nodes for Safari
1589 team, python binding problem with namespace nodes, improve HTML parsing
1590 (Arnold Hendriks), regexp automata build bug, memory leak fix (Vasily
1591 Chekalkin), XSD test crash, weird system parameter entity parsing problem,
1592 allow save to file:///X:/ windows paths, various attribute normalisation
1593 problems, externalSubsetSplit fix (Ashwin), attribute redefinition in
1594 the DTD (Ashwin), fix in char ref parsing check (Alex Khesin), many
1595 out of memory handling fixes (Ashwin), XPath out of memory handling fixes
1596 (Alvaro Herrera), various realloc problems (Ashwin), UCS4 encoding
1597 conversion buffer size (Christian Fruth), problems with EatName
1598 functions on memory errors, BOM handling in external parsed entities
1600 <li>Code cleanup: fix build under VS 2008 (David Wimsey), remove useless
1601 mutex in xmlDict (Florent Guilian), Mingw32 compilation fix (Carlo
1602 Bramini), Win and MacOS EOL cleanups (Florent Guiliani), iconv need
1603 a const detection (Roumen Petrov), simplify xmlSetProp (Julien Charbon),
1604 cross compilation fixes for Mingw (Roumen Petrov), SCO Openserver build
1605 fix (Florent Guiliani), iconv uses const on Win32 (Rob Richards),
1606 duplicate code removal (Ashwin), missing malloc test and error reports
1607 (Ashwin), VMS makefile fix (Tycho Hilhorst)</li>
1608 <li>improvements: better plug of schematron in the normal error handling
1609 (Tobias Minich)</li>
1612 <h3>2.6.31: Jan 11 2008</h3>
1614 <li>Security fix: missing of checks in UTF-8 parsing</li>
1615 <li>Bug fixes: regexp bug, dump attribute from XHTML document, fix
1616 xmlFree(NULL) to not crash in debug mode, Schematron parsing crash
1617 (Rob Richards), global lock free on Windows (Marc-Antoine Ruel),
1618 XSD crash due to double free (Rob Richards), indentation fix in
1619 xmlTextWriterFullEndElement (Felipe Pena), error in attribute type
1620 parsing if attribute redeclared, avoid crash in hash list scanner if
1621 deleting elements, column counter bug fix (Christian Schmidt),
1622 HTML embed element saving fix (Stefan Behnel), avoid -L/usr/lib
1623 output from xml2-config (Fred Crozat), avoid an xmllint crash
1624 (Stefan Kost), don't stop HTML parsing on out of range chars.
1626 <li>Code cleanup: fix open() call third argument, regexp cut'n paste
1627 copy error, unused variable in __xmlGlobalInitMutexLock (Hannes Eder),
1628 some make distcheck realted fixes (John Carr)</li>
1629 <li>Improvements: HTTP Header: includes port number (William Brack),
1630 testURI --debug option, </li>
1632 <h3>2.6.30: Aug 23 2007</h3>
1634 <li>Portability: Solaris crash on error handling, windows path fixes
1635 (Roland Schwarz and Rob Richards), mingw build (Roland Schwarz)</li>
1636 <li>Bugfixes: xmlXPathNodeSetSort problem (William Brack), leak when
1637 reusing a writer for a new document (Dodji Seketeli), Schemas
1638 xsi:nil handling patch (Frank Gross), relative URI build problem
1639 (Patrik Fimml), crash in xmlDocFormatDump, invalid char in comment
1640 detection bug, fix disparity with xmlSAXUserParseMemory, automata
1641 generation for complex regexp counts problems, Schemas IDC import
1642 problems (Frank Gross), xpath predicate evailation error handling
1643 (William Brack)</li>
1645 <h3>2.6.29: Jun 12 2007</h3>
1647 <li>Portability: patches from Andreas Stricke for WinCEi,
1648 fix compilation warnings (William Brack), avoid warnings on Apple OS/X
1649 (Wendy Doyle and Mark Rowe), Windows compilation and threading
1650 improvements (Rob Richards), compilation against old Python versions,
1651 new GNU tar changes (Ryan Hill)</li>
1652 <li>Documentation: xmlURIUnescapeString comment, </li>
1653 <li>Bugfixes: xmlBufferAdd problem (Richard Jones), 'make valgrind'
1654 flag fix (Richard Jones), regexp interpretation of \,
1655 htmlCreateDocParserCtxt (Jean-Daniel Dupas), configure.in
1656 typo (Bjorn Reese), entity content failure, xmlListAppend() fix
1657 (Georges-André Silber), XPath number serialization (William Brack),
1658 nanohttp gzipped stream fix (William Brack and Alex Cornejo),
1659 xmlCharEncFirstLine typo (Mark Rowe), uri bug (François Delyon),
1660 XPath string value of PI nodes (William Brack), XPath node set
1661 sorting bugs (William Brack), avoid outputting namespace decl
1662 dups in the writer (Rob Richards), xmlCtxtReset bug, UTF-8 encoding
1663 error handling, recustion on next in catalogs, fix a Relax-NG crash,
1664 workaround wrong file: URIs, htmlNodeDumpFormatOutput on attributes,
1665 invalid character in attribute detection bug, big comments before
1666 internal subset streaming bug, HTML parsing of attributes with : in
1667 the name, IDness of name in HTML (Dagfinn I. Mannsåker) </li>
1668 <li>Improvement: keep URI query parts in raw form (Richard Jones),
1669 embed tag support in HTML (Michael Day) </li>
1672 <h3>2.6.28: Apr 17 2007</h3>
1674 <li>Documentation: comment fixes (Markus Keim), xpath comments fixes too
1675 (James Dennett)</li>
1676 <li>Bug fixes: XPath bug (William Brack), HTML parser autoclose stack usage
1677 (Usamah Malik), various regexp bug fixes (DV and William), path conversion
1678 on Windows (Igor Zlatkovic), htmlCtxtReset fix (Michael Day), XPath
1679 principal node of axis bug, HTML serialization of some codepoint
1680 (Steven Rainwater), user data propagation in XInclude (Michael Day),
1681 standalone and XML decl detection (Michael Day), Python id ouptut
1682 for some id, fix the big python string memory leak, URI parsing fixes
1683 (Stéphane Bidoul and William), long comments parsing bug (William),
1684 concurrent threads initialization (Ted Phelps), invalid char
1685 in text XInclude (William), XPath memory leak (William), tab in
1686 python problems (Andreas Hanke), XPath node comparison error
1687 (Oleg Paraschenko), cleanup patch for reader (Julien Reichel),
1688 XML Schemas attribute group (William), HTML parsing problem (William),
1689 fix char 0x2d in regexps (William), regexp quantifier range with
1690 min occurs of 0 (William), HTML script/style parsing (Mike Day)</li>
1691 <li>Improvement: make xmlTextReaderSetup() public</li>
1692 <li>Compilation and postability: fix a missing include problem (William),
1693 __ss_familly on AIX again (Björn Wiberg), compilation without zlib
1694 (Michael Day), catalog patch for Win32 (Christian Ehrlicher),
1695 Windows CE fixes (Andreas Stricke)</li>
1696 <li>Various CVS to SVN infrastructure changes</li>
1698 <h3>2.6.27: Oct 25 2006</h3>
1700 <li>Portability fixes: file names on windows (Roland Schwingel,
1701 Emelyanov Alexey), windows compile fixup (Rob Richards),
1702 AIX iconv() is apparently case sensitive</li>
1703 <li>improvements: Python XPath types mapping (Nic Ferrier), XPath optimization
1704 (Kasimier), add xmlXPathCompiledEvalToBoolean (Kasimier), Python node
1705 equality and comparison (Andreas Pakulat), xmlXPathCollectAndTest
1706 improvememt (Kasimier), expose if library was compiled with zlib
1707 support (Andrew Nosenko), cache for xmlSchemaIDCMatcher structs
1708 (Kasimier), xmlTextConcat should work with comments and PIs (Rob
1709 Richards), export htmlNewParserCtxt needed by Michael Day, refactoring
1710 of catalog entity loaders (Michael Day), add XPointer support to
1711 python bindings (Ross Reedstrom, Brian West and Stefan Anca),
1712 try to sort out most file path to URI conversions and xmlPathToUri,
1713 add --html --memory case to xmllint</li>
1714 <li>building fix: fix --with-minimum (Felipe Contreras), VMS fix,
1715 const'ification of HTML parser structures (Matthias Clasen),
1716 portability fix (Emelyanov Alexey), wget autodetection (Peter
1717 Breitenlohner), remove the build path recorded in the python
1718 shared module, separate library flags for shared and static builds
1719 (Mikhail Zabaluev), fix --with-minimum --with-sax1 builds, fix
1720 --with-minimum --with-schemas builds</li>
1721 <li>bug fix: xmlGetNodePath fix (Kasimier), xmlDOMWrapAdoptNode and
1722 attribute (Kasimier), crash when using the recover mode,
1723 xmlXPathEvalExpr problem (Kasimier), xmlXPathCompExprAdd bug (Kasimier),
1724 missing destry in xmlFreeRMutex (Andrew Nosenko), XML Schemas fixes
1725 (Kasimier), warning on entities processing, XHTML script and style
1726 serialization (Kasimier), python generator for long types, bug in
1727 xmlSchemaClearValidCtxt (Bertrand Fritsch), xmlSchemaXPathEvaluate
1728 allocation bug (Marton Illes), error message end of line (Rob Richards),
1729 fix attribute serialization in writer (Rob Richards), PHP4 DTD validation
1730 crasher, parser safety patch (Ben Darnell), _private context propagation
1731 when parsing entities (with Michael Day), fix entities behaviour when
1732 using SAX, URI to file path fix (Mikhail Zabaluev), disapearing validity
1733 context, arg error in SAX callback (Mike Hommey), fix mixed-content
1734 autodetect when using --noblanks, fix xmlIOParseDTD error handling,
1735 fix bug in xmlSplitQName on special Names, fix Relax-NG element content
1736 validation bug, fix xmlReconciliateNs bug, fix potential attribute
1737 XML parsing bug, fix line/column accounting in XML parser, chunking bug
1738 in the HTML parser on script, try to detect obviously buggy HTML
1739 meta encoding indications, bugs with encoding BOM and xmlSaveDoc,
1740 HTML entities in attributes parsing, HTML minimized attribute values,
1741 htmlReadDoc and htmlReadIO were broken, error handling bug in
1742 xmlXPathEvalExpression (Olaf Walkowiak), fix a problem in
1743 htmlCtxtUseOptions, xmlNewInputFromFile could leak (Marius Konitzer),
1744 bug on misformed SSD regexps (Christopher Boumenot)
1746 <li>documentation: warning about XML_PARSE_COMPACT (Kasimier Buchcik),
1747 fix xmlXPathCastToString documentation, improve man pages for
1748 xmllitn and xmlcatalog (Daniel Leidert), fixed comments of a few
1751 <h3>2.6.26: Jun 6 2006</h3>
1753 <li>portability fixes: Python detection (Joseph Sacco), compilation
1754 error(William Brack and Graham Bennett), LynxOS patch (Olli Savia)</li>
1755 <li>bug fixes: encoding buffer problem, mix of code and data in
1756 xmlIO.c(Kjartan Maraas), entities in XSD validation (Kasimier Buchcik),
1757 variousXSD validation fixes (Kasimier), memory leak in pattern (Rob
1758 Richards andKasimier), attribute with colon in name (Rob Richards), XPath
1759 leak inerror reporting (Aleksey Sanin), XInclude text include of
1761 <li>improvements: Xpath optimizations (Kasimier), XPath object
1762 cache(Kasimier)</li>
1765 <h3>2.6.25: Jun 6 2006:</h3>
1767 <p>Do not use or package 2.6.25</p>
1769 <h3>2.6.24: Apr 28 2006</h3>
1771 <li>Portability fixes: configure on Windows, testapi compile on windows
1772 (Kasimier Buchcik, venkat naidu), Borland C++ 6 compile (Eric Zurcher),
1773 HP-UX compiler workaround (Rick Jones), xml2-config bugfix, gcc-4.1
1774 cleanups, Python detection scheme (Joseph Sacco), UTF-8 file paths on
1775 Windows (Roland Schwingel).
1777 <li>Improvements: xmlDOMWrapReconcileNamespaces xmlDOMWrapCloneNode (Kasimier
1778 Buchcik), XML catalog debugging (Rick Jones), update to Unicode 4.01.</li>
1779 <li>Bug fixes: xmlParseChunk() problem in 2.6.23, xmlParseInNodeContext()
1780 on HTML docs, URI behaviour on Windows (Rob Richards), comment streaming
1781 bug, xmlParseComment (with William Brack), regexp bug fixes (DV &
1782 Youri Golovanov), xmlGetNodePath on text/CDATA (Kasimier),
1783 one Relax-NG interleave bug, xmllint --path and --valid,
1784 XSD bugfixes (Kasimier), remove debug
1785 left in Python bindings (Nic Ferrier), xmlCatalogAdd bug (Martin Cole),
1786 xmlSetProp fixes (Rob Richards), HTML IDness (Rob Richards), a large
1787 number of cleanups and small fixes based on Coverity reports, bug
1788 in character ranges, Unicode tables const (Aivars Kalvans), schemas
1789 fix (Stefan Kost), xmlRelaxNGParse error deallocation,
1790 xmlSchemaAddSchemaDoc error deallocation, error handling on unallowed
1791 code point, ixmllint --nonet to never reach the net (Gary Coady),
1792 line break in writer after end PI (Jason Viers). </li>
1793 <li>Documentation: man pages updates and cleanups (Daniel Leidert).</li>
1794 <li>New features: Relax NG structure error handlers.</li>
1797 <h3>2.6.23: Jan 5 2006</h3>
1799 <li>portability fixes: Windows (Rob Richards), getaddrinfo on Windows
1800 (Kolja Nowak, Rob Richards), icc warnings (Kjartan Maraas),
1801 --with-minimum compilation fixes (William Brack), error case handling fix
1802 on Solaris (Albert Chin), don't use 'list' as parameter name reported by
1803 Samuel Diaz Garcia, more old Unices portability fixes (Albert Chin),
1804 MinGW compilation (Mark Junker), HP-UX compiler warnings (Rick
1806 <li>code cleanup: xmlReportError (Adrian Mouat), remove xmlBufferClose
1807 (Geert Jansen), unreachable code (Oleksandr Kononenko), refactoring
1808 parsing code (Bjorn Reese)</li>
1809 <li>bug fixes: xmlBuildRelativeURI and empty path (William Brack),
1810 combinatory explosion and performances in regexp code, leak in
1811 xmlTextReaderReadString(), xmlStringLenDecodeEntities problem (Massimo
1812 Morara), Identity Constraints bugs and a segfault (Kasimier Buchcik),
1813 XPath pattern based evaluation bugs (DV & Kasimier),
1814 xmlSchemaContentModelDump() memory leak (Kasimier), potential leak in
1815 xmlSchemaCheckCSelectorXPath(), xmlTextWriterVSprintf() misuse of
1816 vsnprintf (William Brack), XHTML serialization fix (Rob Richards), CRLF
1817 split problem (William), issues with non-namespaced attributes in
1818 xmlAddChild() xmlAddNextSibling() and xmlAddPrevSibling() (Rob Richards),
1819 HTML parsing of script, Python must not output to stdout (Nic Ferrier),
1820 exclusive C14N namespace visibility (Aleksey Sanin), XSD dataype
1821 totalDigits bug (Kasimier Buchcik), error handling when writing to an
1822 xmlBuffer (Rob Richards), runtest schemas error not reported (Hisashi
1823 Fujinaka), signed/unsigned problem in date/time code (Albert Chin), fix
1824 XSI driven XSD validation (Kasimier), parsing of xs:decimal (Kasimier),
1825 fix DTD writer output (Rob Richards), leak in xmlTextReaderReadInnerXml
1826 (Gary Coady), regexp bug affecting schemas (Kasimier), configuration of
1827 runtime debugging (Kasimier), xmlNodeBufGetContent bug on entity refs
1828 (Oleksandr Kononenko), xmlRegExecPushString2 bug (Sreeni Nair),
1829 compilation and build fixes (Michael Day), removed dependancies on
1830 xmlSchemaValidError (Kasimier), bug with <xml:foo/>, more XPath
1831 pattern based evaluation fixes (Kasimier)</li>
1832 <li>improvements: XSD Schemas redefinitions/restrictions (Kasimier
1833 Buchcik), node copy checks and fix for attribute (Rob Richards), counted
1834 transition bug in regexps, ctxt->standalone = -2 to indicate no
1835 standalone attribute was found, add xmlSchemaSetParserStructuredErrors()
1836 (Kasimier Buchcik), add xmlTextReaderSchemaValidateCtxt() to API
1837 (Kasimier), handle gzipped HTTP resources (Gary Coady), add
1838 htmlDocDumpMemoryFormat. (Rob Richards),</li>
1839 <li>documentation: typo (Michael Day), libxml man page (Albert Chin), save
1840 function to XML buffer (Geert Jansen), small doc fix (Aron Stansvik),</li>
1843 <h3>2.6.22: Sep 12 2005</h3>
1845 <li>build fixes: compile without schematron (Stéphane Bidoul)</li>
1846 <li>bug fixes: xmlDebugDumpNode on namespace node (Oleg Paraschenko)i,
1847 CDATA push parser bug, xmlElemDump problem with XHTML1 doc,
1848 XML_FEATURE_xxx clash with expat headers renamed XML_WITH_xxx, fix some
1849 output formatting for meta element (Rob Richards), script and style
1850 XHTML1 serialization (David Madore), Attribute derivation fixups in XSD
1851 (Kasimier Buchcik), better IDC error reports (Kasimier Buchcik)</li>
1852 <li>improvements: add XML_SAVE_NO_EMPTY xmlSaveOption (Rob Richards), add
1853 XML_SAVE_NO_XHTML xmlSaveOption, XML Schemas improvements preparing for
1854 derive (Kasimier Buchcik).</li>
1855 <li>documentation: generation of gtk-doc like docs, integration with
1859 <h3>2.6.21: Sep 4 2005</h3>
1861 <li>build fixes: Cygwin portability fixes (Gerrit P. Haase), calling
1862 convention problems on Windows (Marcus Boerger), cleanups based on Linus'
1863 sparse tool, update of win32/configure.js (Rob Richards), remove warnings
1864 on Windows(Marcus Boerger), compilation without SAX1, detection of the
1865 Python binary, use $GCC inestad of $CC = 'gcc' (Andrew W. Nosenko),
1866 compilation/link with threads and old gcc, compile problem by C370 on
1868 <li>bug fixes: http_proxy environments (Peter Breitenlohner), HTML UTF-8
1869 bug (Jiri Netolicky), XPath NaN compare bug (William Brack),
1870 htmlParseScript potential bug, Schemas regexp handling of spaces, Base64
1871 Schemas comparisons NIST passes, automata build error xsd:all,
1872 xmlGetNodePath for namespaced attributes (Alexander Pohoyda), xmlSchemas
1873 foreign namespaces handling, XML Schemas facet comparison (Kupriyanov
1874 Anatolij), xmlSchemaPSimpleTypeErr error report (Kasimier Buchcik), xml:
1875 namespace ahndling in Schemas (Kasimier), empty model group in Schemas
1876 (Kasimier), wilcard in Schemas (Kasimier), URI composition (William),
1877 xs:anyType in Schemas (Kasimier), Python resolver emmitting error
1878 messages directly, Python xmlAttr.parent (Jakub Piotr Clapa), trying to
1879 fix the file path/URI conversion, xmlTextReaderGetAttribute fix (Rob
1880 Richards), xmlSchemaFreeAnnot memleak (Kasimier), HTML UTF-8
1881 serialization, streaming XPath, Schemas determinism detection problem,
1882 XInclude bug, Schemas context type (Dean Hill), validation fix (Derek
1883 Poon), xmlTextReaderGetAttribute[Ns] namespaces (Rob Richards), Schemas
1884 type fix (Kuba Nowakowski), UTF-8 parser bug, error in encoding handling,
1885 xmlGetLineNo fixes, bug on entities handling, entity name extraction in
1886 error handling with XInclude, text nodes in HTML body tags (Gary Coady),
1887 xml:id and IDness at the treee level fixes, XPath streaming patterns
1889 <li>improvements: structured interfaces for schemas and RNG error reports
1890 (Marcus Boerger), optimization of the char data inner loop parsing
1891 (thanks to Behdad Esfahbod for the idea), schematron validation though
1892 not finished yet, xmlSaveOption to omit XML declaration, keyref match
1893 error reports (Kasimier), formal expression handling code not plugged
1894 yet, more lax mode for the HTML parser, parser XML_PARSE_COMPACT option
1895 for text nodes allocation.</li>
1896 <li>documentation: xmllint man page had --nonet duplicated</li>
1899 <h3>2.6.20: Jul 10 2005</h3>
1901 <li>build fixes: Windows build (Rob Richards), Mingw compilation (Igor
1902 Zlatkovic), Windows Makefile (Igor), gcc warnings (Kasimier and
1903 andriy@google.com), use gcc weak references to pthread to avoid the
1904 pthread dependancy on Linux, compilation problem (Steve Nairn), compiling
1905 of subset (Morten Welinder), IPv6/ss_family compilation (William Brack),
1906 compilation when disabling parts of the library, standalone test
1908 <li>bug fixes: bug in lang(), memory cleanup on errors (William Brack),
1909 HTTP query strings (Aron Stansvik), memory leak in DTD (William), integer
1910 overflow in XPath (William), nanoftp buffer size, pattern "." apth fixup
1911 (Kasimier), leak in tree reported by Malcolm Rowe, replaceNode patch
1912 (Brent Hendricks), CDATA with NULL content (Mark Vakoc), xml:base fixup
1913 on XInclude (William), pattern fixes (William), attribute bug in
1914 exclusive c14n (Aleksey Sanin), xml:space and xml:lang with SAX2 (Rob
1915 Richards), namespace trouble in complex parsing (Malcolm Rowe), XSD type
1916 QNames fixes (Kasimier), XPath streaming fixups (William), RelaxNG bug
1917 (Rob Richards), Schemas for Schemas fixes (Kasimier), removal of ID (Rob
1918 Richards), a small RelaxNG leak, HTML parsing in push mode bug (James
1919 Bursa), failure to detect UTF-8 parsing bugs in CDATA sections,
1920 areBlanks() heuristic failure, duplicate attributes in DTD bug
1922 <li>improvements: lot of work on Schemas by Kasimier Buchcik both on
1923 conformance and streaming, Schemas validation messages (Kasimier Buchcik,
1924 Matthew Burgess), namespace removal at the python level (Brent
1925 Hendricks), Update to new Schemas regression tests from W3C/Nist
1926 (Kasimier), xmlSchemaValidateFile() (Kasimier), implementation of
1927 xmlTextReaderReadInnerXml and xmlTextReaderReadOuterXml (James Wert),
1928 standalone test framework and programs, new DOM import APIs
1929 xmlDOMWrapReconcileNamespaces() xmlDOMWrapAdoptNode() and
1930 xmlDOMWrapRemoveNode(), extension of xmllint capabilities for SAX and
1931 Schemas regression tests, xmlStopParser() available in pull mode too,
1932 ienhancement to xmllint --shell namespaces support, Windows port of the
1933 standalone testing tools (Kasimier and William),
1934 xmlSchemaValidateStream() xmlSchemaSAXPlug() and xmlSchemaSAXUnplug() SAX
1935 Schemas APIs, Schemas xmlReader support.</li>
1938 <h3>2.6.19: Apr 02 2005</h3>
1940 <li>build fixes: drop .la from RPMs, --with-minimum build fix (William
1941 Brack), use XML_SOCKLEN_T instead of SOCKLEN_T because it breaks with AIX
1942 5.3 compiler, fixed elfgcchack.h generation and PLT reduction code on
1944 <li>bug fixes: schemas type decimal fixups (William Brack), xmmlint return
1945 code (Gerry Murphy), small schemas fixes (Matthew Burgess and GUY
1946 Fabrice), workaround "DAV:" namespace brokeness in c14n (Aleksey Sanin),
1947 segfault in Schemas (Kasimier Buchcik), Schemas attribute validation
1948 (Kasimier), Prop related functions and xmlNewNodeEatName (Rob Richards),
1949 HTML serialization of name attribute on a elements, Python error handlers
1950 leaks and improvement (Brent Hendricks), uninitialized variable in
1951 encoding code, Relax-NG validation bug, potential crash if
1952 gnorableWhitespace is NULL, xmlSAXParseDoc and xmlParseDoc signatures,
1953 switched back to assuming UTF-8 in case no encoding is given at
1954 serialization time</li>
1955 <li>improvements: lot of work on Schemas by Kasimier Buchcik on facets
1956 checking and also mixed handling.</li>
1960 <h3>2.6.18: Mar 13 2005</h3>
1962 <li>build fixes: warnings (Peter Breitenlohner), testapi.c generation,
1963 Bakefile support (Francesco Montorsi), Windows compilation (Joel Reed),
1964 some gcc4 fixes, HP-UX portability fixes (Rick Jones).</li>
1965 <li>bug fixes: xmlSchemaElementDump namespace (Kasimier Buchcik), push and
1966 xmlreader stopping on non-fatal errors, thread support for dictionnaries
1967 reference counting (Gary Coady), internal subset and push problem, URL
1968 saved in xmlCopyDoc, various schemas bug fixes (Kasimier), Python paths
1969 fixup (Stephane Bidoul), xmlGetNodePath and namespaces, xmlSetNsProp fix
1970 (Mike Hommey), warning should not count as error (William Brack),
1971 xmlCreatePushParser empty chunk, XInclude parser flags (William), cleanup
1972 FTP and HTTP code to reuse the uri parsing and IPv6 (William),
1973 xmlTextWriterStartAttributeNS fix (Rob Richards), XMLLINT_INDENT being
1974 empty (William), xmlWriter bugs (Rob Richards), multithreading on Windows
1975 (Rich Salz), xmlSearchNsByHref fix (Kasimier), Python binding leak (Brent
1976 Hendricks), aliasing bug exposed by gcc4 on s390, xmlTextReaderNext bug
1977 (Rob Richards), Schemas decimal type fixes (William Brack),
1978 xmlByteConsumed static buffer (Ben Maurer).</li>
1979 <li>improvement: speedup parsing comments and DTDs, dictionnary support for
1980 hash tables, Schemas Identity constraints (Kasimier), streaming XPath
1981 subset, xmlTextReaderReadString added (Bjorn Reese), Schemas canonical
1982 values handling (Kasimier), add xmlTextReaderByteConsumed (Aron
1984 <li>Documentation: Wiki support (Joel Reed)</li>
1987 <h3>2.6.17: Jan 16 2005</h3>
1989 <li>build fixes: Windows, warnings removal (William Brack),
1990 maintainer-clean dependency(William), build in a different directory
1991 (William), fixing --with-minimum configure build (William), BeOS build
1992 (Marcin Konicki), Python-2.4 detection (William), compilation on AIX (Dan
1994 <li>bug fixes: xmlTextReaderHasAttributes (Rob Richards), xmlCtxtReadFile()
1995 to use the catalog(s), loop on output (William Brack), XPath memory leak,
1996 ID deallocation problem (Steve Shepard), debugDumpNode crash (William),
1997 warning not using error callback (William), xmlStopParser bug (William),
1998 UTF-16 with BOM on DTDs (William), namespace bug on empty elements in
1999 push mode (Rob Richards), line and col computations fixups (Aleksey
2000 Sanin), xmlURIEscape fix (William), xmlXPathErr on bad range (William),
2001 patterns with too many steps, bug in RNG choice optimization, line number
2002 sometimes missing.</li>
2003 <li>improvements: XSD Schemas (Kasimier Buchcik), python generator
2004 (William), xmlUTF8Strpos speedup (William), unicode Python strings
2005 (William), XSD error reports (Kasimier Buchcik), Python __str__ call
2007 <li>new APIs: added xmlDictExists(), GetLineNumber and GetColumnNumber for
2008 the xmlReader (Aleksey Sanin), Dynamic Shared Libraries APIs (mostly Joel
2009 Reed), error extraction API from regexps, new XMLSave option for format
2011 <li>documentation: site improvement (John Fleck), FAQ entries
2015 <h3>2.6.16: Nov 10 2004</h3>
2017 <li>general hardening and bug fixing crossing all the API based on new
2018 automated regression testing</li>
2019 <li>build fix: IPv6 build and test on AIX (Dodji Seketeli)</li>
2020 <li>bug fixes: problem with XML::Libxml reported by Petr Pajas, encoding
2021 conversion functions return values, UTF-8 bug affecting XPath reported by
2022 Markus Bertheau, catalog problem with NULL entries (William Brack)</li>
2023 <li>documentation: fix to xmllint man page, some API function descritpion
2025 <li>improvements: DTD validation APIs provided at the Python level (Brent
2029 <h3>2.6.15: Oct 27 2004</h3>
2031 <li>security fixes on the nanoftp and nanohttp modules</li>
2032 <li>build fixes: xmllint detection bug in configure, building outside the
2033 source tree (Thomas Fitzsimmons)</li>
2034 <li>bug fixes: HTML parser on broken ASCII chars in names (William), Python
2035 paths (Malcolm Tredinnick), xmlHasNsProp and default namespace (William),
2036 saving to python file objects (Malcolm Tredinnick), DTD lookup fix
2037 (Malcolm), save back <group> in catalogs (William), tree build
2038 fixes (DV and Rob Richards), Schemas memory bug, structured error handler
2039 on Python 64bits, thread local memory deallocation, memory leak reported
2040 by Volker Roth, xmlValidateDtd in the presence of an internal subset,
2041 entities and _private problem (William), xmlBuildRelativeURI error
2043 <li>improvements: better XInclude error reports (William), tree debugging
2044 module and tests, convenience functions at the Reader API (Graham
2045 Bennett), add support for PI in the HTML parser.</li>
2048 <h3>2.6.14: Sep 29 2004</h3>
2050 <li>build fixes: configure paths for xmllint and xsltproc, compilation
2051 without HTML parser, compilation warning cleanups (William Brack &
2052 Malcolm Tredinnick), VMS makefile update (Craig Berry),</li>
2053 <li>bug fixes: xmlGetUTF8Char (William Brack), QName properties (Kasimier
2054 Buchcik), XInclude testing, Notation serialization, UTF8ToISO8859x
2055 transcoding (Mark Itzcovitz), lots of XML Schemas cleanup and fixes
2056 (Kasimier), ChangeLog cleanup (Stepan Kasal), memory fixes (Mark Vakoc),
2057 handling of failed realloc(), out of bound array adressing in Schemas
2058 date handling, Python space/tabs cleanups (Malcolm Tredinnick), NMTOKENS
2059 E20 validation fix (Malcolm),</li>
2060 <li>improvements: added W3C XML Schemas testsuite (Kasimier Buchcik), add
2061 xmlSchemaValidateOneElement (Kasimier), Python exception hierearchy
2062 (Malcolm Tredinnick), Python libxml2 driver improvement (Malcolm
2063 Tredinnick), Schemas support for xsi:schemaLocation,
2064 xsi:noNamespaceSchemaLocation, xsi:type (Kasimier Buchcik)</li>
2067 <h3>2.6.13: Aug 31 2004</h3>
2069 <li>build fixes: Windows and zlib (Igor Zlatkovic), -O flag with gcc,
2070 Solaris compiler warning, fixing RPM BuildRequires,</li>
2071 <li>fixes: DTD loading on Windows (Igor), Schemas error reports APIs
2072 (Kasimier Buchcik), Schemas validation crash, xmlCheckUTF8 (William Brack
2073 and Julius Mittenzwei), Schemas facet check (Kasimier), default namespace
2074 problem (William), Schemas hexbinary empty values, encoding error could
2075 genrate a serialization loop.</li>
2076 <li>Improvements: Schemas validity improvements (Kasimier), added --path
2077 and --load-trace options to xmllint</li>
2078 <li>documentation: tutorial update (John Fleck)</li>
2081 <h3>2.6.12: Aug 22 2004</h3>
2083 <li>build fixes: fix --with-minimum, elfgcchack.h fixes (Peter
2084 Breitenlohner), perl path lookup (William), diff on Solaris (Albert
2085 Chin), some 64bits cleanups.</li>
2086 <li>Python: avoid a warning with 2.3 (William Brack), tab and space mixes
2087 (William), wrapper generator fixes (William), Cygwin support (Gerrit P.
2088 Haase), node wrapper fix (Marc-Antoine Parent), XML Schemas support
2090 <li>Schemas: a lot of bug fixes and improvements from Kasimier Buchcik</li>
2091 <li>fixes: RVT fixes (William), XPath context resets bug (William), memory
2092 debug (Steve Hay), catalog white space handling (Peter Breitenlohner),
2093 xmlReader state after attribute reading (William), structured error
2094 handler (William), XInclude generated xml:base fixup (William), Windows
2095 memory reallocation problem (Steve Hay), Out of Memory conditions
2096 handling (William and Olivier Andrieu), htmlNewDoc() charset bug,
2097 htmlReadMemory init (William), a posteriori validation DTD base
2098 (William), notations serialization missing, xmlGetNodePath (Dodji),
2099 xmlCheckUTF8 (Diego Tartara), missing line numbers on entity
2101 <li>improvements: DocBook catalog build scrip (William), xmlcatalog tool
2102 (Albert Chin), xmllint --c14n option, no_proxy environment (Mike Hommey),
2103 xmlParseInNodeContext() addition, extend xmllint --shell, allow XInclude
2104 to not generate start/end nodes, extend xmllint --version to include CVS
2106 <li>documentation: web pages fixes, validity API docs fixes (William)
2107 schemas API fix (Eric Haszlakiewicz), xmllint man page (John Fleck)</li>
2110 <h3>2.6.11: July 5 2004</h3>
2112 <li>Schemas: a lot of changes and improvements by Kasimier Buchcik for
2113 attributes, namespaces and simple types.</li>
2114 <li>build fixes: --with-minimum (William Brack), some gcc cleanup
2115 (William), --with-thread-alloc (William)</li>
2116 <li>portability: Windows binary package change (Igor Zlatkovic), Catalog
2117 path on Windows</li>
2118 <li>documentation: update to the tutorial (John Fleck), xmllint return code
2119 (John Fleck), man pages (Ville Skytta),</li>
2120 <li>bug fixes: C14N bug serializing namespaces (Aleksey Sanin), testSAX
2121 properly initialize the library (William), empty node set in XPath
2122 (William), xmlSchemas errors (William), invalid charref problem pointed
2123 by Morus Walter, XInclude xml:base generation (William), Relax-NG bug
2124 with div processing (William), XPointer and xml:base problem(William),
2125 Reader and entities, xmllint return code for schemas (William), reader
2126 streaming problem (Steve Ball), DTD serialization problem (William),
2127 libxml.m4 fixes (Mike Hommey), do not provide destructors as methods on
2128 Python classes, xmlReader buffer bug, Python bindings memory interfaces
2129 improvement (with Stéphane Bidoul), Fixed the push parser to be back to
2130 synchronous behaviour.</li>
2131 <li>improvement: custom per-thread I/O enhancement (Rob Richards), register
2132 namespace in debug shell (Stefano Debenedetti), Python based regression
2133 test for non-Unix users (William), dynamically increase the number of
2134 XPath extension functions in Python and fix a memory leak (Marc-Antoine
2135 Parent and William)</li>
2136 <li>performance: hack done with Arjan van de Ven to reduce ELF footprint
2137 and generated code on Linux, plus use gcc runtime profiling to optimize
2138 the code generated in the RPM packages.</li>
2141 <h3>2.6.10: May 17 2004</h3>
2143 <li>Web page generated for ChangeLog</li>
2144 <li>build fixes: --without-html problems, make check without make all</li>
2145 <li>portability: problem with xpath.c on Windows (MSC and Borland), memcmp
2146 vs. strncmp on Solaris, XPath tests on Windows (Mark Vakoc), C++ do not
2147 use "list" as parameter name, make tests work with Python 1.5 (Ed
2149 <li>improvements: made xmlTextReaderMode public, small buffers resizing
2150 (Morten Welinder), add --maxmem option to xmllint, add
2151 xmlPopInputCallback() for Matt Sergeant, refactoring of serialization
2152 escaping, added escaping customization</li>
2153 <li>bugfixes: xsd:extension (Taihei Goi), assorted regexp bugs (William
2154 Brack), xmlReader end of stream problem, node deregistration with reader,
2155 URI escaping and filemanes, XHTML1 formatting (Nick Wellnhofer), regexp
2156 transition reduction (William), various XSD Schemas fixes (Kasimier
2157 Buchcik), XInclude fallback problem (William), weird problems with DTD
2158 (William), structured error handler callback context (William), reverse
2159 xmlEncodeSpecialChars() behaviour back to escaping '"'</li>
2162 <h3>2.6.9: Apr 18 2004</h3>
2164 <li>implement xml:id Working Draft, relaxed XPath id() checking</li>
2165 <li>bugfixes: xmlCtxtReset (Brent Hendricks), line number and CDATA (Dave
2166 Beckett), Relax-NG compilation (William Brack), Regexp patches (with
2167 William), xmlUriEscape (Mark Vakoc), a Relax-NG notAllowed problem (with
2168 William), Relax-NG name classes compares (William), XInclude duplicate
2169 fallback (William), external DTD encoding detection (William), a DTD
2170 validation bug (William), xmlReader Close() fix, recusive extention
2172 <li>improvements: use xmlRead* APIs in test tools (Mark Vakoc), indenting
2173 save optimization, better handle IIS broken HTTP redirect behaviour (Ian
2174 Hummel), HTML parser frameset (James Bursa), libxml2-python RPM
2175 dependancy, XML Schemas union support (Kasimier Buchcik), warning removal
2176 clanup (William), keep ChangeLog compressed when installing from RPMs</li>
2177 <li>documentation: examples and xmlDocDumpMemory docs (John Fleck), new
2178 example (load, xpath, modify, save), xmlCatalogDump() comments,</li>
2179 <li>Windows: Borland C++ builder (Eric Zurcher), work around Microsoft
2180 compiler NaN handling bug (Mark Vakoc)</li>
2183 <h3>2.6.8: Mar 23 2004</h3>
2185 <li>First step of the cleanup of the serialization code and APIs</li>
2186 <li>XML Schemas: mixed content (Adam Dickmeiss), QName handling fixes (Adam
2187 Dickmeiss), anyURI for "" (John Belmonte)</li>
2188 <li>Python: Canonicalization C14N support added (Anthony Carrico)</li>
2189 <li>xmlDocCopyNode() extension (William)</li>
2190 <li>Relax-NG: fix when processing XInclude results (William), external
2191 reference in interleave (William), missing error on <choice>
2192 failure (William), memory leak in schemas datatype facets.</li>
2193 <li>xmlWriter: patch for better DTD support (Alfred Mickautsch)</li>
2194 <li>bug fixes: xmlXPathLangFunction memory leak (Mike Hommey and William
2195 Brack), no ID errors if using HTML_PARSE_NOERROR, xmlcatalog fallbacks to
2196 URI on SYSTEM lookup failure, XInclude parse flags inheritance (William),
2197 XInclude and XPointer fixes for entities (William), XML parser bug
2198 reported by Holger Rauch, nanohttp fd leak (William), regexps char
2199 groups '-' handling (William), dictionnary reference counting problems,
2200 do not close stderr.</li>
2201 <li>performance patches from Petr Pajas</li>
2202 <li>Documentation fixes: XML_CATALOG_FILES in man pages (Mike Hommey)</li>
2203 <li>compilation and portability fixes: --without-valid, catalog cleanups
2204 (Peter Breitenlohner), MingW patch (Roland Schwingel), cross-compilation
2205 to Windows (Christophe de Vienne), --with-html-dir fixup (Julio Merino
2206 Vidal), Windows build (Eric Zurcher)</li>
2209 <h3>2.6.7: Feb 23 2004</h3>
2211 <li>documentation: tutorial updates (John Fleck), benchmark results</li>
2212 <li>xmlWriter: updates and fixes (Alfred Mickautsch, Lucas Brasilino)</li>
2213 <li>XPath optimization (Petr Pajas)</li>
2214 <li>DTD ID handling optimization</li>
2215 <li>bugfixes: xpath number with > 19 fractional (William Brack), push
2216 mode with unescaped '>' characters, fix xmllint --stream --timing, fix
2217 xmllint --memory --stream memory usage, xmlAttrSerializeTxtContent
2218 handling NULL, trying to fix Relax-NG/Perl interface.</li>
2219 <li>python: 2.3 compatibility, whitespace fixes (Malcolm Tredinnick)</li>
2220 <li>Added relaxng option to xmllint --shell</li>
2223 <h3>2.6.6: Feb 12 2004</h3>
2225 <li>nanohttp and nanoftp: buffer overflow error on URI parsing (Igor and
2226 William) reported by Yuuichi Teranishi</li>
2227 <li>bugfixes: make test and path issues, xmlWriter attribute serialization
2228 (William Brack), xmlWriter indentation (William), schemas validation
2229 (Eric Haszlakiewicz), XInclude dictionnaries issues (William and Oleg
2230 Paraschenko), XInclude empty fallback (William), HTML warnings (William),
2231 XPointer in XInclude (William), Python namespace serialization,
2232 isolat1ToUTF8 bound error (Alfred Mickautsch), output of parameter
2233 entities in internal subset (William), internal subset bug in push mode,
2234 <xs:all> fix (Alexey Sarytchev)</li>
2235 <li>Build: fix for automake-1.8 (Alexander Winston), warnings removal
2236 (Philip Ludlam), SOCKLEN_T detection fixes (Daniel Richard), fix
2237 --with-minimum configuration.</li>
2238 <li>XInclude: allow the 2001 namespace without warning.</li>
2239 <li>Documentation: missing example/index.html (John Fleck), version
2240 dependancies (John Fleck)</li>
2241 <li>reader API: structured error reporting (Steve Ball)</li>
2242 <li>Windows compilation: mingw, msys (Mikhail Grushinskiy), function
2243 prototype (Cameron Johnson), MSVC6 compiler warnings, _WINSOCKAPI_
2245 <li>Parsers: added xmlByteConsumed(ctxt) API to get the byte offest in
2249 <h3>2.6.5: Jan 25 2004</h3>
2251 <li>Bugfixes: dictionnaries for schemas (William Brack), regexp segfault
2252 (William), xs:all problem (William), a number of XPointer bugfixes
2253 (William), xmllint error go to stderr, DTD validation problem with
2254 namespace, memory leak (William), SAX1 cleanup and minimal options fixes
2255 (Mark Vadoc), parser context reset on error (Shaun McCance), XPath union
2256 evaluation problem (William) , xmlReallocLoc with NULL (Aleksey Sanin),
2257 XML Schemas double free (Steve Ball), XInclude with no href, argument
2258 callbacks order for XPath callbacks (Frederic Peters)</li>
2259 <li>Documentation: python scripts (William Brack), xslt stylesheets (John
2260 Fleck), doc (Sven Zimmerman), I/O example.</li>
2261 <li>Python bindings: fixes (William), enum support (Stéphane Bidoul),
2262 structured error reporting (Stéphane Bidoul)</li>
2263 <li>XInclude: various fixes for conformance, problem related to dictionnary
2264 references (William & me), recursion (William)</li>
2265 <li>xmlWriter: indentation (Lucas Brasilino), memory leaks (Alfred
2267 <li>xmlSchemas: normalizedString datatype (John Belmonte)</li>
2268 <li>code cleanup for strings functions (William)</li>
2269 <li>Windows: compiler patches (Mark Vakoc)</li>
2270 <li>Parser optimizations, a few new XPath and dictionnary APIs for future
2271 XSLT optimizations.</li>
2274 <h3>2.6.4: Dec 24 2003</h3>
2276 <li>Windows build fixes (Igor Zlatkovic)</li>
2277 <li>Some serious XInclude problems reported by Oleg Paraschenko and</li>
2278 <li>Unix and Makefile packaging fixes (me, William Brack,</li>
2279 <li>Documentation improvements (John Fleck, William Brack), example fix
2280 (Lucas Brasilino)</li>
2281 <li>bugfixes: xmlTextReaderExpand() with xmlReaderWalker, XPath handling of
2282 NULL strings (William Brack) , API building reader or parser from
2283 filedescriptor should not close it, changed XPath sorting to be stable
2284 again (William Brack), xmlGetNodePath() generating '(null)' (William
2285 Brack), DTD validation and namespace bug (William Brack), XML Schemas
2286 double inclusion behaviour</li>
2289 <h3>2.6.3: Dec 10 2003</h3>
2291 <li>documentation updates and cleanup (DV, William Brack, John Fleck)</li>
2292 <li>added a repository of examples, examples from Aleksey Sanin, Dodji
2293 Seketeli, Alfred Mickautsch</li>
2294 <li>Windows updates: Mark Vakoc, Igor Zlatkovic, Eric Zurcher, Mingw
2295 (Kenneth Haley)</li>
2296 <li>Unicode range checking (William Brack)</li>
2297 <li>code cleanup (William Brack)</li>
2298 <li>Python bindings: doc (John Fleck), bug fixes</li>
2299 <li>UTF-16 cleanup and BOM issues (William Brack)</li>
2300 <li>bug fixes: ID and xmlReader validation, XPath (William Brack),
2301 xmlWriter (Alfred Mickautsch), hash.h inclusion problem, HTML parser
2302 (James Bursa), attribute defaulting and validation, some serialization
2303 cleanups, XML_GET_LINE macro, memory debug when using threads (William
2304 Brack), serialization of attributes and entities content, xmlWriter
2305 (Daniel Schulman)</li>
2306 <li>XInclude bugfix, new APIs and update to the last version including the
2307 namespace change.</li>
2308 <li>XML Schemas improvements: include (Robert Stepanek), import and
2309 namespace handling, fixed the regression tests troubles, added examples
2310 based on Eric van der Vlist book, regexp fixes</li>
2311 <li>preliminary pattern support for streaming (needed for schemas
2312 constraints), added xmlTextReaderPreservePattern() to collect subdocument
2313 when streaming.</li>
2314 <li>various fixes in the structured error handling</li>
2317 <h3>2.6.2: Nov 4 2003</h3>
2319 <li>XPath context unregistration fixes</li>
2320 <li>text node coalescing fixes (Mark Lilback)</li>
2321 <li>API to screate a W3C Schemas from an existing document (Steve Ball)</li>
2322 <li>BeOS patches (Marcin 'Shard' Konicki)</li>
2323 <li>xmlStrVPrintf function added (Aleksey Sanin)</li>
2324 <li>compilation fixes (Mark Vakoc)</li>
2325 <li>stdin parsing fix (William Brack)</li>
2326 <li>a posteriori DTD validation fixes</li>
2327 <li>xmlReader bug fixes: Walker fixes, python bindings</li>
2328 <li>fixed xmlStopParser() to really stop the parser and errors</li>
2329 <li>always generate line numbers when using the new xmlReadxxx
2331 <li>added XInclude support to the xmlReader interface</li>
2332 <li>implemented XML_PARSE_NONET parser option</li>
2333 <li>DocBook XSLT processing bug fixed</li>
2334 <li>HTML serialization for <p> elements (William Brack and me)</li>
2335 <li>XPointer failure in XInclude are now handled as resource errors</li>
2336 <li>fixed xmllint --html to use the HTML serializer on output (added
2337 --xmlout to implement the previous behaviour of saving it using the XML
2341 <h3>2.6.1: Oct 28 2003</h3>
2343 <li>Mostly bugfixes after the big 2.6.0 changes</li>
2344 <li>Unix compilation patches: libxml.m4 (Patrick Welche), warnings cleanup
2345 (William Brack)</li>
2346 <li>Windows compilation patches (Joachim Bauch, Stephane Bidoul, Igor
2348 <li>xmlWriter bugfix (Alfred Mickautsch)</li>
2349 <li>chvalid.[ch]: couple of fixes from Stephane Bidoul</li>
2350 <li>context reset: error state reset, push parser reset (Graham
2352 <li>context reuse: generate errors if file is not readable</li>
2353 <li>defaulted attributes for element coming from internal entities
2354 (Stephane Bidoul)</li>
2355 <li>Python: tab and spaces mix (William Brack)</li>
2356 <li>Error handler could crash in DTD validation in 2.6.0</li>
2357 <li>xmlReader: do not use the document or element _private field</li>
2358 <li>testSAX.c: avoid a problem with some PIs (Massimo Morara)</li>
2359 <li>general bug fixes: mandatory encoding in text decl, serializing
2360 Document Fragment nodes, xmlSearchNs 2.6.0 problem (Kasimier Buchcik),
2361 XPath errors not reported, slow HTML parsing of large documents.</li>
2364 <h3>2.6.0: Oct 20 2003</h3>
2366 <li>Major revision release: should be API and ABI compatible but got a lot
2368 <li>Increased the library modularity, far more options can be stripped out,
2369 a --with-minimum configuration will weight around 160KBytes</li>
2370 <li>Use per parser and per document dictionnary, allocate names and small
2371 text nodes from the dictionnary</li>
2372 <li>Switch to a SAX2 like parser rewrote most of the XML parser core,
2373 provides namespace resolution and defaulted attributes, minimize memory
2374 allocations and copies, namespace checking and specific error handling,
2375 immutable buffers, make predefined entities static structures, etc...</li>
2376 <li>rewrote all the error handling in the library, all errors can be
2377 intercepted at a structured level, with precise information
2379 <li>New simpler and more generic XML and HTML parser APIs, allowing to
2380 easilly modify the parsing options and reuse parser context for multiple
2381 consecutive documents.</li>
2382 <li>Similar new APIs for the xmlReader, for options and reuse, provided new
2383 functions to access content as const strings, use them for Python
2385 <li>a lot of other smaller API improvements: xmlStrPrintf (Aleksey Sanin),
2386 Walker i.e. reader on a document tree based on Alfred Mickautsch code,
2387 make room in nodes for line numbers, reference counting and future PSVI
2388 extensions, generation of character ranges to be checked with faster
2389 algorithm (William), xmlParserMaxDepth (Crutcher Dunnavant), buffer
2391 <li>New xmlWriter API provided by Alfred Mickautsch</li>
2392 <li>Schemas: base64 support by Anthony Carrico</li>
2393 <li>Parser<->HTTP integration fix, proper processing of the Mime-Type
2394 and charset information if available.</li>
2395 <li>Relax-NG: bug fixes including the one reported by Martijn Faassen and
2396 zeroOrMore, better error reporting.</li>
2397 <li>Python bindings (Stéphane Bidoul), never use stdout for errors
2399 <li>Portability: all the headers have macros for export and calling
2400 convention definitions (Igor Zlatkovic), VMS update (Craig A. Berry),
2401 Windows: threads (Jesse Pelton), Borland compiler (Eric Zurcher, Igor),
2402 Mingw (Igor), typos (Mark Vakoc), beta version (Stephane Bidoul),
2403 warning cleanups on AIX and MIPS compilers (William Brack), BeOS (Marcin
2404 'Shard' Konicki)</li>
2405 <li>Documentation fixes and README (William Brack), search fix (William),
2406 tutorial updates (John Fleck), namespace docs (Stefan Kost)</li>
2407 <li>Bug fixes: xmlCleanupParser (Dave Beckett), threading uninitialized
2408 mutexes, HTML doctype lowercase, SAX/IO (William), compression detection
2409 and restore (William), attribute declaration in DTDs (William), namespace
2410 on attribute in HTML output (William), input filename (Rob Richards),
2411 namespace DTD validation, xmlReplaceNode (Chris Ryland), I/O callbacks
2412 (Markus Keim), CDATA serialization (Shaun McCance), xmlReader (Peter
2413 Derr), high codepoint charref like &#x10FFFF;, buffer access in push
2414 mode (Justin Fletcher), TLS threads on Windows (Jesse Pelton), XPath bug
2415 (William), xmlCleanupParser (Marc Liyanage), CDATA output (William), HTTP
2416 error handling.</li>
2417 <li>xmllint options: --dtdvalidfpi for Tobias Reif, --sax1 for compat
2418 testing, --nodict for building without tree dictionnary, --nocdata to
2419 replace CDATA by text, --nsclean to remove surperfluous namespace
2421 <li>added xml2-config --libtool-libs option from Kevin P. Fleming</li>
2422 <li>a lot of profiling and tuning of the code, speedup patch for
2423 xmlSearchNs() by Luca Padovani. The xmlReader should do far less
2424 allocation and it speed should get closer to SAX. Chris Anderson worked
2425 on speeding and cleaning up repetitive checking code.</li>
2426 <li>cleanup of "make tests"</li>
2427 <li>libxml-2.0-uninstalled.pc from Malcolm Tredinnick</li>
2428 <li>deactivated the broken docBook SGML parser code and plugged the XML
2429 parser instead.</li>
2432 <h3>2.5.11: Sep 9 2003</h3>
2434 <p>A bugfix only release:</p>
2436 <li>risk of crash in Relax-NG</li>
2437 <li>risk of crash when using multithreaded programs</li>
2440 <h3>2.5.10: Aug 15 2003</h3>
2442 <p>A bugfixes only release</p>
2444 <li>Windows Makefiles (William Brack)</li>
2445 <li>UTF-16 support fixes (Mark Itzcovitz)</li>
2446 <li>Makefile and portability (William Brack) automake, Linux alpha, Mingw
2447 on Windows (Mikhail Grushinskiy)</li>
2448 <li>HTML parser (Oliver Stoeneberg)</li>
2449 <li>XInclude performance problem reported by Kevin Ruscoe</li>
2450 <li>XML parser performance problem reported by Grant Goodale</li>
2451 <li>xmlSAXParseDTD() bug fix from Malcolm Tredinnick</li>
2452 <li>and a couple other cleanup</li>
2455 <h3>2.5.9: Aug 9 2003</h3>
2457 <li>bugfixes: IPv6 portability, xmlHasNsProp (Markus Keim), Windows build
2458 (Wiliam Brake, Jesse Pelton, Igor), Schemas (Peter Sobisch), threading
2459 (Rob Richards), hexBinary type (), UTF-16 BOM (Dodji Seketeli),
2460 xmlReader, Relax-NG schemas compilation, namespace handling, EXSLT (Sean
2461 Griffin), HTML parsing problem (William Brack), DTD validation for mixed
2462 content + namespaces, HTML serialization, library initialization,
2463 progressive HTML parser</li>
2464 <li>better interfaces for Relax-NG error handling (Joachim Bauch, )</li>
2465 <li>adding xmlXIncludeProcessTree() for XInclud'ing in a subtree</li>
2466 <li>doc fixes and improvements (John Fleck)</li>
2467 <li>configure flag for -with-fexceptions when embedding in C++</li>
2468 <li>couple of new UTF-8 helper functions (William Brack)</li>
2469 <li>general encoding cleanup + ISO-8859-x without iconv (Peter Jacobi)</li>
2470 <li>xmlTextReader cleanup + enum for node types (Bjorn Reese)</li>
2471 <li>general compilation/warning cleanup Solaris/HP-UX/... (William
2475 <h3>2.5.8: Jul 6 2003</h3>
2477 <li>bugfixes: XPath, XInclude, file/URI mapping, UTF-16 save (Mark
2478 Itzcovitz), UTF-8 checking, URI saving, error printing (William Brack),
2479 PI related memleak, compilation without schemas or without xpath (Joerg
2480 Schmitz-Linneweber/Garry Pennington), xmlUnlinkNode problem with DTDs,
2481 rpm problem on , i86_64, removed a few compilation problems from 2.5.7,
2482 xmlIOParseDTD, and xmlSAXParseDTD (Malcolm Tredinnick)</li>
2483 <li>portability: DJGPP (MsDos) , OpenVMS (Craig A. Berry)</li>
2484 <li>William Brack fixed multithreading lock problems</li>
2485 <li>IPv6 patch for FTP and HTTP accesses (Archana Shah/Wipro)</li>
2486 <li>Windows fixes (Igor Zlatkovic, Eric Zurcher), threading (Stéphane
2488 <li>A few W3C Schemas Structure improvements</li>
2489 <li>W3C Schemas Datatype improvements (Charlie Bozeman)</li>
2490 <li>Python bindings for thread globals (Stéphane Bidoul), and method/class
2492 <li>added --nonet option to xmllint</li>
2493 <li>documentation improvements (John Fleck)</li>
2496 <h3>2.5.7: Apr 25 2003</h3>
2498 <li>Relax-NG: Compiling to regexp and streaming validation on top of the
2499 xmlReader interface, added to xmllint --stream</li>
2500 <li>xmlReader: Expand(), Next() and DOM access glue, bug fixes</li>
2501 <li>Support for large files: RGN validated a 4.5GB instance</li>
2502 <li>Thread support is now configured in by default</li>
2503 <li>Fixes: update of the Trio code (Bjorn), WXS Date and Duration fixes
2504 (Charles Bozeman), DTD and namespaces (Brent Hendricks), HTML push parser
2505 and zero bytes handling, some missing Windows file path conversions,
2506 behaviour of the parser and validator in the presence of "out of memory"
2507 error conditions</li>
2508 <li>extended the API to be able to plug a garbage collecting memory
2509 allocator, added xmlMallocAtomic() and modified the allocations
2511 <li>Performances: removed excessive malloc() calls, speedup of the push and
2512 xmlReader interfaces, removed excessive thread locking</li>
2513 <li>Documentation: man page (John Fleck), xmlReader documentation</li>
2514 <li>Python: adding binding for xmlCatalogAddLocal (Brent M Hendricks)</li>
2517 <h3>2.5.6: Apr 1 2003</h3>
2519 <li>Fixed W3C XML Schemas datatype, should be compliant now except for
2520 binHex and base64 which are not supported yet.</li>
2521 <li>bug fixes: non-ASCII IDs, HTML output, XInclude on large docs and
2522 XInclude entities handling, encoding detection on external subsets, XML
2523 Schemas bugs and memory leaks, HTML parser (James Bursa)</li>
2524 <li>portability: python/trio (Albert Chin), Sun compiler warnings</li>
2525 <li>documentation: added --relaxng option to xmllint man page (John)</li>
2526 <li>improved error reporting: xml:space, start/end tag mismatches, Relax NG
2530 <h3>2.5.5: Mar 24 2003</h3>
2532 <li>Lot of fixes on the Relax NG implementation. More testing including
2533 DocBook and TEI examples.</li>
2534 <li>Increased the support for W3C XML Schemas datatype</li>
2535 <li>Several bug fixes in the URI handling layer</li>
2536 <li>Bug fixes: HTML parser, xmlReader, DTD validation, XPath, encoding
2537 conversion, line counting in the parser.</li>
2538 <li>Added support for $XMLLINT_INDENT environment variable, FTP delete</li>
2539 <li>Fixed the RPM spec file name</li>
2542 <h3>2.5.4: Feb 20 2003</h3>
2544 <li>Conformance testing and lot of fixes on Relax NG and XInclude
2546 <li>Implementation of XPointer element() scheme</li>
2547 <li>Bug fixes: XML parser, XInclude entities merge, validity checking on
2549 <p>2 serialization bugs, node info generation problems, a DTD regexp
2550 generation problem.</p>
2552 <li>Portability: windows updates and path canonicalization (Igor)</li>
2553 <li>A few typo fixes (Kjartan Maraas)</li>
2554 <li>Python bindings generator fixes (Stephane Bidoul)</li>
2557 <h3>2.5.3: Feb 10 2003</h3>
2559 <li>RelaxNG and XML Schemas datatypes improvements, and added a first
2560 version of RelaxNG Python bindings</li>
2561 <li>Fixes: XLink (Sean Chittenden), XInclude (Sean Chittenden), API fix for
2562 serializing namespace nodes, encoding conversion bug, XHTML1
2564 <li>Portability fixes: Windows (Igor), AMD 64bits RPM spec file</li>
2567 <h3>2.5.2: Feb 5 2003</h3>
2569 <li>First implementation of RelaxNG, added --relaxng flag to xmllint</li>
2570 <li>Schemas support now compiled in by default.</li>
2571 <li>Bug fixes: DTD validation, namespace checking, XInclude and entities,
2572 delegateURI in XML Catalogs, HTML parser, XML reader (Stéphane Bidoul),
2573 XPath parser and evaluation, UTF8ToUTF8 serialization, XML reader memory
2574 consumption, HTML parser, HTML serialization in the presence of
2576 <li>added an HTML API to check elements and attributes.</li>
2577 <li>Documentation improvement, PDF for the tutorial (John Fleck), doc
2578 patches (Stefan Kost)</li>
2579 <li>Portability fixes: NetBSD (Julio Merino), Windows (Igor Zlatkovic)</li>
2580 <li>Added python bindings for XPointer, contextual error reporting
2581 (Stéphane Bidoul)</li>
2582 <li>URI/file escaping problems (Stefano Zacchiroli)</li>
2585 <h3>2.5.1: Jan 8 2003</h3>
2587 <li>Fixes a memory leak and configuration/compilation problems in 2.5.0</li>
2588 <li>documentation updates (John)</li>
2589 <li>a couple of XmlTextReader fixes</li>
2592 <h3>2.5.0: Jan 6 2003</h3>
2594 <li>New <a href="xmlreader.html">XmltextReader interface</a> based on C#
2595 API (with help of Stéphane Bidoul)</li>
2596 <li>Windows: more exports, including the new API (Igor)</li>
2597 <li>XInclude fallback fix</li>
2598 <li>Python: bindings for the new API, packaging (Stéphane Bidoul),
2599 drv_libxml2.py Python xml.sax driver (Stéphane Bidoul), fixes, speedup
2600 and iterators for Python-2.2 (Hannu Krosing)</li>
2601 <li>Tutorial fixes (john Fleck and Niraj Tolia) xmllint man update
2603 <li>Fix an XML parser bug raised by Vyacheslav Pindyura</li>
2604 <li>Fix for VMS serialization (Nigel Hall) and config (Craig A. Berry)</li>
2605 <li>Entities handling fixes</li>
2606 <li>new API to optionally track node creation and deletion (Lukas
2608 <li>Added documentation for the XmltextReader interface and some <a
2609 href="guidelines.html">XML guidelines</a></li>
2612 <h3>2.4.30: Dec 12 2002</h3>
2614 <li>2.4.29 broke the python bindings, rereleasing</li>
2615 <li>Improvement/fixes of the XML API generator, and couple of minor code
2619 <h3>2.4.29: Dec 11 2002</h3>
2621 <li>Windows fixes (Igor): Windows CE port, pthread linking, python bindings
2622 (Stéphane Bidoul), Mingw (Magnus Henoch), and export list updates</li>
2623 <li>Fix for prev in python bindings (ERDI Gergo)</li>
2624 <li>Fix for entities handling (Marcus Clarke)</li>
2625 <li>Refactored the XML and HTML dumps to a single code path, fixed XHTML1
2627 <li>Fix for URI parsing when handling URNs with fragment identifiers</li>
2628 <li>Fix for HTTP URL escaping problem</li>
2629 <li>added an TextXmlReader (C#) like API (work in progress)</li>
2630 <li>Rewrote the API in XML generation script, includes a C parser and saves
2631 more information needed for C# bindings</li>
2634 <h3>2.4.28: Nov 22 2002</h3>
2636 <li>a couple of python binding fixes</li>
2637 <li>2 bug fixes in the XML push parser</li>
2638 <li>potential memory leak removed (Martin Stoilov)</li>
2639 <li>fix to the configure script for Unix (Dimitri Papadopoulos)</li>
2640 <li>added encoding support for XInclude parse="text"</li>
2641 <li>autodetection of XHTML1 and specific serialization rules added</li>
2642 <li>nasty threading bug fixed (William Brack)</li>
2645 <h3>2.4.27: Nov 17 2002</h3>
2647 <li>fixes for the Python bindings</li>
2648 <li>a number of bug fixes: SGML catalogs, xmlParseBalancedChunkMemory(),
2649 HTML parser, Schemas (Charles Bozeman), document fragment support
2650 (Christian Glahn), xmlReconciliateNs (Brian Stafford), XPointer,
2651 xmlFreeNode(), xmlSAXParseMemory (Peter Jones), xmlGetNodePath (Petr
2652 Pajas), entities processing</li>
2653 <li>added grep to xmllint --shell</li>
2654 <li>VMS update patch from Craig A. Berry</li>
2655 <li>cleanup of the Windows build with support for more compilers (Igor),
2656 better thread support on Windows</li>
2657 <li>cleanup of Unix Makefiles and spec file</li>
2658 <li>Improvements to the documentation (John Fleck)</li>
2661 <h3>2.4.26: Oct 18 2002</h3>
2663 <li>Patches for Windows CE port, improvements on Windows paths handling</li>
2664 <li>Fixes to the validation code (DTD and Schemas), xmlNodeGetPath() ,
2665 HTML serialization, Namespace compliance, and a number of small
2669 <h3>2.4.25: Sep 26 2002</h3>
2671 <li>A number of bug fixes: XPath, validation, Python bindings, DOM and
2672 tree, xmlI/O, Html</li>
2673 <li>Serious rewrite of XInclude</li>
2674 <li>Made XML Schemas regexp part of the default build and APIs, small fix
2675 and improvement of the regexp core</li>
2676 <li>Changed the validation code to reuse XML Schemas regexp APIs</li>
2677 <li>Better handling of Windows file paths, improvement of Makefiles (Igor,
2678 Daniel Gehriger, Mark Vakoc)</li>
2679 <li>Improved the python I/O bindings, the tests, added resolver and regexp
2681 <li>New logos from Marc Liyanage</li>
2682 <li>Tutorial improvements: John Fleck, Christopher Harris</li>
2683 <li>Makefile: Fixes for AMD x86_64 (Mandrake), DESTDIR (Christophe
2685 <li>removal of all stderr/perror use for error reporting</li>
2686 <li>Better error reporting: XPath and DTD validation</li>
2687 <li>update of the trio portability layer (Bjorn Reese)</li>
2690 <p><strong>2.4.24: Aug 22 2002</strong></p>
2692 <li>XPath fixes (William), xf:escape-uri() (Wesley Terpstra)</li>
2693 <li>Python binding fixes: makefiles (William), generator, rpm build, x86-64
2695 <li>HTML <style> and boolean attributes serializer fixes</li>
2696 <li>C14N improvements by Aleksey</li>
2697 <li>doc cleanups: Rick Jones</li>
2698 <li>Windows compiler makefile updates: Igor and Elizabeth Barham</li>
2699 <li>XInclude: implementation of fallback and xml:base fixup added</li>
2702 <h3>2.4.23: July 6 2002</h3>
2704 <li>performances patches: Peter Jacobi</li>
2705 <li>c14n fixes, testsuite and performances: Aleksey Sanin</li>
2706 <li>added xmlDocFormatDump: Chema Celorio</li>
2707 <li>new tutorial: John Fleck</li>
2708 <li>new hash functions and performances: Sander Vesik, portability fix from
2710 <li>a number of bug fixes: XPath (William Brack, Richard Jinks), XML and
2711 HTML parsers, ID lookup function</li>
2712 <li>removal of all remaining sprintf: Aleksey Sanin</li>
2715 <h3>2.4.22: May 27 2002</h3>
2717 <li>a number of bug fixes: configure scripts, base handling, parser, memory
2718 usage, HTML parser, XPath, documentation (Christian Cornelssen),
2719 indentation, URI parsing</li>
2720 <li>Optimizations for XMLSec, fixing and making public some of the network
2721 protocol handlers (Aleksey)</li>
2722 <li>performance patch from Gary Pennington</li>
2723 <li>Charles Bozeman provided date and time support for XML Schemas
2727 <h3>2.4.21: Apr 29 2002</h3>
2729 <p>This release is both a bug fix release and also contains the early XML
2730 Schemas <a href="http://www.w3.org/TR/xmlschema-1/">structures</a> and <a
2731 href="http://www.w3.org/TR/xmlschema-2/">datatypes</a> code, beware, all
2732 interfaces are likely to change, there is huge holes, it is clearly a work in
2733 progress and don't even think of putting this code in a production system,
2734 it's actually not compiled in by default. The real fixes are:
2738 <li>a couple of bugs or limitations introduced in 2.4.20</li>
2739 <li>patches for Borland C++ and MSC by Igor</li>
2740 <li>some fixes on XPath strings and conformance patches by Richard
2742 <li>patch from Aleksey for the ExcC14N specification</li>
2743 <li>OSF/1 bug fix by Bjorn</li>
2746 <h3>2.4.20: Apr 15 2002</h3>
2748 <li>bug fixes: file descriptor leak, XPath, HTML output, DTD validation</li>
2749 <li>XPath conformance testing by Richard Jinks</li>
2750 <li>Portability fixes: Solaris, MPE/iX, Windows, OSF/1, python bindings,
2754 <h3>2.4.19: Mar 25 2002</h3>
2756 <li>bug fixes: half a dozen XPath bugs, Validation, ISO-Latin to UTF8
2758 <li>portability fixes in the HTTP code</li>
2759 <li>memory allocation checks using valgrind, and profiling tests</li>
2760 <li>revamp of the Windows build and Makefiles</li>
2763 <h3>2.4.18: Mar 18 2002</h3>
2765 <li>bug fixes: tree, SAX, canonicalization, validation, portability,
2767 <li>removed the --with-buffer option it was becoming unmaintainable</li>
2768 <li>serious cleanup of the Python makefiles</li>
2769 <li>speedup patch to XPath very effective for DocBook stylesheets</li>
2770 <li>Fixes for Windows build, cleanup of the documentation</li>
2773 <h3>2.4.17: Mar 8 2002</h3>
2775 <li>a lot of bug fixes, including "namespace nodes have no parents in
2777 <li>fixed/improved the Python wrappers, added more examples and more
2778 regression tests, XPath extension functions can now return node-sets</li>
2779 <li>added the XML Canonicalization support from Aleksey Sanin</li>
2782 <h3>2.4.16: Feb 20 2002</h3>
2784 <li>a lot of bug fixes, most of them were triggered by the XML Testsuite
2785 from OASIS and W3C. Compliance has been significantly improved.</li>
2786 <li>a couple of portability fixes too.</li>
2789 <h3>2.4.15: Feb 11 2002</h3>
2791 <li>Fixed the Makefiles, especially the python module ones</li>
2792 <li>A few bug fixes and cleanup</li>
2793 <li>Includes cleanup</li>
2796 <h3>2.4.14: Feb 8 2002</h3>
2798 <li>Change of License to the <a
2799 href="http://www.opensource.org/licenses/mit-license.html">MIT
2800 License</a> basically for integration in XFree86 codebase, and removing
2801 confusion around the previous dual-licensing</li>
2802 <li>added Python bindings, beta software but should already be quite
2804 <li>a large number of fixes and cleanups, especially for all tree
2806 <li>cleanup of the headers, generation of a reference API definition in
2810 <h3>2.4.13: Jan 14 2002</h3>
2812 <li>update of the documentation: John Fleck and Charlie Bozeman</li>
2813 <li>cleanup of timing code from Justin Fletcher</li>
2814 <li>fixes for Windows and initial thread support on Win32: Igor and Serguei
2816 <li>Cygwin patch from Robert Collins</li>
2817 <li>added xmlSetEntityReferenceFunc() for Keith Isdale work on xsldbg</li>
2820 <h3>2.4.12: Dec 7 2001</h3>
2822 <li>a few bug fixes: thread (Gary Pennington), xmllint (Geert Kloosterman),
2823 XML parser (Robin Berjon), XPointer (Danny Jamshy), I/O cleanups
2825 <li>Eric Lavigne contributed project files for MacOS</li>
2826 <li>some makefiles cleanups</li>
2829 <h3>2.4.11: Nov 26 2001</h3>
2831 <li>fixed a couple of errors in the includes, fixed a few bugs, some code
2833 <li>xmllint man pages improvement by Heiko Rupp</li>
2834 <li>updated VMS build instructions from John A Fotheringham</li>
2835 <li>Windows Makefiles updates from Igor</li>
2838 <h3>2.4.10: Nov 10 2001</h3>
2840 <li>URI escaping fix (Joel Young)</li>
2841 <li>added xmlGetNodePath() (for paths or XPointers generation)</li>
2842 <li>Fixes namespace handling problems when using DTD and validation</li>
2843 <li>improvements on xmllint: Morus Walter patches for --format and
2844 --encode, Stefan Kost and Heiko Rupp improvements on the --shell</li>
2845 <li>fixes for xmlcatalog linking pointed by Weiqi Gao</li>
2846 <li>fixes to the HTML parser</li>
2849 <h3>2.4.9: Nov 6 2001</h3>
2851 <li>fixes more catalog bugs</li>
2852 <li>avoid a compilation problem, improve xmlGetLineNo()</li>
2855 <h3>2.4.8: Nov 4 2001</h3>
2857 <li>fixed SGML catalogs broken in previous release, updated xmlcatalog
2859 <li>fixed a compile errors and some includes troubles.</li>
2862 <h3>2.4.7: Oct 30 2001</h3>
2864 <li>exported some debugging interfaces</li>
2865 <li>serious rewrite of the catalog code</li>
2866 <li>integrated Gary Pennington thread safety patch, added configure option
2867 and regression tests</li>
2868 <li>removed an HTML parser bug</li>
2869 <li>fixed a couple of potentially serious validation bugs</li>
2870 <li>integrated the SGML DocBook support in xmllint</li>
2871 <li>changed the nanoftp anonymous login passwd</li>
2872 <li>some I/O cleanup and a couple of interfaces for Perl wrapper</li>
2873 <li>general bug fixes</li>
2874 <li>updated xmllint man page by John Fleck</li>
2875 <li>some VMS and Windows updates</li>
2878 <h3>2.4.6: Oct 10 2001</h3>
2880 <li>added an updated man pages by John Fleck</li>
2881 <li>portability and configure fixes</li>
2882 <li>an infinite loop on the HTML parser was removed (William)</li>
2883 <li>Windows makefile patches from Igor</li>
2884 <li>fixed half a dozen bugs reported for libxml or libxslt</li>
2885 <li>updated xmlcatalog to be able to modify SGML super catalogs</li>
2888 <h3>2.4.5: Sep 14 2001</h3>
2890 <li>Remove a few annoying bugs in 2.4.4</li>
2891 <li>forces the HTML serializer to output decimal charrefs since some
2892 version of Netscape can't handle hexadecimal ones</li>
2895 <h3>1.8.16: Sep 14 2001</h3>
2897 <li>maintenance release of the old libxml1 branch, couple of bug and
2898 portability fixes</li>
2901 <h3>2.4.4: Sep 12 2001</h3>
2903 <li>added --convert to xmlcatalog, bug fixes and cleanups of XML
2905 <li>a few bug fixes and some portability changes</li>
2906 <li>some documentation cleanups</li>
2909 <h3>2.4.3: Aug 23 2001</h3>
2911 <li>XML Catalog support see the doc</li>
2912 <li>New NaN/Infinity floating point code</li>
2913 <li>A few bug fixes</li>
2916 <h3>2.4.2: Aug 15 2001</h3>
2918 <li>adds xmlLineNumbersDefault() to control line number generation</li>
2919 <li>lot of bug fixes</li>
2920 <li>the Microsoft MSC projects files should now be up to date</li>
2921 <li>inheritance of namespaces from DTD defaulted attributes</li>
2922 <li>fixes a serious potential security bug</li>
2923 <li>added a --format option to xmllint</li>
2926 <h3>2.4.1: July 24 2001</h3>
2928 <li>possibility to keep line numbers in the tree</li>
2929 <li>some computation NaN fixes</li>
2930 <li>extension of the XPath API</li>
2931 <li>cleanup for alpha and ia64 targets</li>
2932 <li>patch to allow saving through HTTP PUT or POST</li>
2935 <h3>2.4.0: July 10 2001</h3>
2937 <li>Fixed a few bugs in XPath, validation, and tree handling.</li>
2938 <li>Fixed XML Base implementation, added a couple of examples to the
2939 regression tests</li>
2940 <li>A bit of cleanup</li>
2943 <h3>2.3.14: July 5 2001</h3>
2945 <li>fixed some entities problems and reduce memory requirement when
2946 substituting them</li>
2947 <li>lots of improvements in the XPath queries interpreter can be
2948 substantially faster</li>
2949 <li>Makefiles and configure cleanups</li>
2950 <li>Fixes to XPath variable eval, and compare on empty node set</li>
2951 <li>HTML tag closing bug fixed</li>
2952 <li>Fixed an URI reference computation problem when validating</li>
2955 <h3>2.3.13: June 28 2001</h3>
2957 <li>2.3.12 configure.in was broken as well as the push mode XML parser</li>
2958 <li>a few more fixes for compilation on Windows MSC by Yon Derek</li>
2961 <h3>1.8.14: June 28 2001</h3>
2963 <li>Zbigniew Chyla gave a patch to use the old XML parser in push mode</li>
2964 <li>Small Makefile fix</li>
2967 <h3>2.3.12: June 26 2001</h3>
2969 <li>lots of cleanup</li>
2970 <li>a couple of validation fix</li>
2971 <li>fixed line number counting</li>
2972 <li>fixed serious problems in the XInclude processing</li>
2973 <li>added support for UTF8 BOM at beginning of entities</li>
2974 <li>fixed a strange gcc optimizer bugs in xpath handling of float, gcc-3.0
2975 miscompile uri.c (William), Thomas Leitner provided a fix for the
2976 optimizer on Tru64</li>
2977 <li>incorporated Yon Derek and Igor Zlatkovic fixes and improvements for
2978 compilation on Windows MSC</li>
2979 <li>update of libxml-doc.el (Felix Natter)</li>
2980 <li>fixed 2 bugs in URI normalization code</li>
2983 <h3>2.3.11: June 17 2001</h3>
2985 <li>updates to trio, Makefiles and configure should fix some portability
2986 problems (alpha)</li>
2987 <li>fixed some HTML serialization problems (pre, script, and block/inline
2988 handling), added encoding aware APIs, cleanup of this code</li>
2989 <li>added xmlHasNsProp()</li>
2990 <li>implemented a specific PI for encoding support in the DocBook SGML
2992 <li>some XPath fixes (-Infinity, / as a function parameter and namespaces
2993 node selection)</li>
2994 <li>fixed a performance problem and an error in the validation code</li>
2995 <li>fixed XInclude routine to implement the recursive behaviour</li>
2996 <li>fixed xmlFreeNode problem when libxml is included statically twice</li>
2997 <li>added --version to xmllint for bug reports</li>
3000 <h3>2.3.10: June 1 2001</h3>
3002 <li>fixed the SGML catalog support</li>
3003 <li>a number of reported bugs got fixed, in XPath, iconv detection,
3004 XInclude processing</li>
3005 <li>XPath string function should now handle unicode correctly</li>
3008 <h3>2.3.9: May 19 2001</h3>
3010 <p>Lots of bugfixes, and added a basic SGML catalog support:
3013 <li>HTML push bugfix #54891 and another patch from Jonas Borgstrom</li>
3014 <li>some serious speed optimization again</li>
3015 <li>some documentation cleanups</li>
3016 <li>trying to get better linking on Solaris (-R)</li>
3017 <li>XPath API cleanup from Thomas Broyer</li>
3018 <li>Validation bug fixed #54631, added a patch from Gary Pennington, fixed
3019 xmlValidGetValidElements()</li>
3020 <li>Added an INSTALL file</li>
3021 <li>Attribute removal added to API: #54433</li>
3022 <li>added a basic support for SGML catalogs</li>
3023 <li>fixed xmlKeepBlanksDefault(0) API</li>
3024 <li>bugfix in xmlNodeGetLang()</li>
3025 <li>fixed a small configure portability problem</li>
3026 <li>fixed an inversion of SYSTEM and PUBLIC identifier in HTML document</li>
3029 <h3>1.8.13: May 14 2001</h3>
3031 <li>bugfixes release of the old libxml1 branch used by Gnome</li>
3034 <h3>2.3.8: May 3 2001</h3>
3036 <li>Integrated an SGML DocBook parser for the Gnome project</li>
3037 <li>Fixed a few things in the HTML parser</li>
3038 <li>Fixed some XPath bugs raised by XSLT use, tried to fix the floating
3039 point portability issue</li>
3040 <li>Speed improvement (8M/s for SAX, 3M/s for DOM, 1.5M/s for
3041 DOM+validation using the XML REC as input and a 700MHz celeron).</li>
3042 <li>incorporated more Windows cleanup</li>
3043 <li>added xmlSaveFormatFile()</li>
3044 <li>fixed problems in copying nodes with entities references (gdome)</li>
3045 <li>removed some troubles surrounding the new validation module</li>
3048 <h3>2.3.7: April 22 2001</h3>
3050 <li>lots of small bug fixes, corrected XPointer</li>
3051 <li>Non deterministic content model validation support</li>
3052 <li>added xmlDocCopyNode for gdome2</li>
3053 <li>revamped the way the HTML parser handles end of tags</li>
3054 <li>XPath: corrections of namespaces support and number formatting</li>
3055 <li>Windows: Igor Zlatkovic patches for MSC compilation</li>
3056 <li>HTML output fixes from P C Chow and William M. Brack</li>
3057 <li>Improved validation speed sensible for DocBook</li>
3058 <li>fixed a big bug with ID declared in external parsed entities</li>
3059 <li>portability fixes, update of Trio from Bjorn Reese</li>
3062 <h3>2.3.6: April 8 2001</h3>
3064 <li>Code cleanup using extreme gcc compiler warning options, found and
3065 cleared half a dozen potential problem</li>
3066 <li>the Eazel team found an XML parser bug</li>
3067 <li>cleaned up the user of some of the string formatting function. used the
3068 trio library code to provide the one needed when the platform is missing
3070 <li>xpath: removed a memory leak and fixed the predicate evaluation
3071 problem, extended the testsuite and cleaned up the result. XPointer seems
3075 <h3>2.3.5: Mar 23 2001</h3>
3077 <li>Biggest change is separate parsing and evaluation of XPath expressions,
3078 there is some new APIs for this too</li>
3079 <li>included a number of bug fixes(XML push parser, 51876, notations,
3081 <li>Fixed some portability issues</li>
3084 <h3>2.3.4: Mar 10 2001</h3>
3086 <li>Fixed bugs #51860 and #51861</li>
3087 <li>Added a global variable xmlDefaultBufferSize to allow default buffer
3088 size to be application tunable.</li>
3089 <li>Some cleanup in the validation code, still a bug left and this part
3090 should probably be rewritten to support ambiguous content model :-\</li>
3091 <li>Fix a couple of serious bugs introduced or raised by changes in 2.3.3
3093 <li>Fixed another bug in xmlNodeGetContent()</li>
3094 <li>Bjorn fixed XPath node collection and Number formatting</li>
3095 <li>Fixed a loop reported in the HTML parsing</li>
3096 <li>blank space are reported even if the Dtd content model proves that they
3097 are formatting spaces, this is for XML conformance</li>
3100 <h3>2.3.3: Mar 1 2001</h3>
3102 <li>small change in XPath for XSLT</li>
3103 <li>documentation cleanups</li>
3104 <li>fix in validation by Gary Pennington</li>
3105 <li>serious parsing performances improvements</li>
3108 <h3>2.3.2: Feb 24 2001</h3>
3110 <li>chasing XPath bugs, found a bunch, completed some TODO</li>
3111 <li>fixed a Dtd parsing bug</li>
3112 <li>fixed a bug in xmlNodeGetContent</li>
3113 <li>ID/IDREF support partly rewritten by Gary Pennington</li>
3116 <h3>2.3.1: Feb 15 2001</h3>
3118 <li>some XPath and HTML bug fixes for XSLT</li>
3119 <li>small extension of the hash table interfaces for DOM gdome2
3121 <li>A few bug fixes</li>
3124 <h3>2.3.0: Feb 8 2001 (2.2.12 was on 25 Jan but I didn't kept track)</h3>
3126 <li>Lots of XPath bug fixes</li>
3127 <li>Add a mode with Dtd lookup but without validation error reporting for
3129 <li>Add support for text node without escaping (XSLT)</li>
3130 <li>bug fixes for xmlCheckFilename</li>
3131 <li>validation code bug fixes from Gary Pennington</li>
3132 <li>Patch from Paul D. Smith correcting URI path normalization</li>
3133 <li>Patch to allow simultaneous install of libxml-devel and
3135 <li>the example Makefile is now fixed</li>
3136 <li>added HTML to the RPM packages</li>
3137 <li>tree copying bugfixes</li>
3138 <li>updates to Windows makefiles</li>
3139 <li>optimization patch from Bjorn Reese</li>
3142 <h3>2.2.11: Jan 4 2001</h3>
3144 <li>bunch of bug fixes (memory I/O, xpath, ftp/http, ...)</li>
3145 <li>added htmlHandleOmittedElem()</li>
3146 <li>Applied Bjorn Reese's IPV6 first patch</li>
3147 <li>Applied Paul D. Smith patches for validation of XInclude results</li>
3148 <li>added XPointer xmlns() new scheme support</li>
3151 <h3>2.2.10: Nov 25 2000</h3>
3153 <li>Fix the Windows problems of 2.2.8</li>
3154 <li>integrate OpenVMS patches</li>
3155 <li>better handling of some nasty HTML input</li>
3156 <li>Improved the XPointer implementation</li>
3157 <li>integrate a number of provided patches</li>
3160 <h3>2.2.9: Nov 25 2000</h3>
3162 <li>erroneous release :-(</li>
3165 <h3>2.2.8: Nov 13 2000</h3>
3167 <li>First version of <a href="http://www.w3.org/TR/xinclude">XInclude</a>
3169 <li>Patch in conditional section handling</li>
3170 <li>updated MS compiler project</li>
3171 <li>fixed some XPath problems</li>
3172 <li>added an URI escaping function</li>
3173 <li>some other bug fixes</li>
3176 <h3>2.2.7: Oct 31 2000</h3>
3178 <li>added message redirection</li>
3179 <li>XPath improvements (thanks TOM !)</li>
3180 <li>xmlIOParseDTD() added</li>
3181 <li>various small fixes in the HTML, URI, HTTP and XPointer support</li>
3182 <li>some cleanup of the Makefile, autoconf and the distribution content</li>
3185 <h3>2.2.6: Oct 25 2000:</h3>
3187 <li>Added an hash table module, migrated a number of internal structure to
3189 <li>Fixed a posteriori validation problems</li>
3190 <li>HTTP module cleanups</li>
3191 <li>HTML parser improvements (tag errors, script/style handling, attribute
3193 <li>coalescing of adjacent text nodes</li>
3194 <li>couple of XPath bug fixes, exported the internal API</li>
3197 <h3>2.2.5: Oct 15 2000:</h3>
3199 <li>XPointer implementation and testsuite</li>
3200 <li>Lot of XPath fixes, added variable and functions registration, more
3202 <li>Portability fixes, lots of enhancements toward an easy Windows build
3204 <li>Late validation fixes</li>
3205 <li>Integrated a lot of contributed patches</li>
3206 <li>added memory management docs</li>
3207 <li>a performance problem when using large buffer seems fixed</li>
3210 <h3>2.2.4: Oct 1 2000:</h3>
3212 <li>main XPath problem fixed</li>
3213 <li>Integrated portability patches for Windows</li>
3214 <li>Serious bug fixes on the URI and HTML code</li>
3217 <h3>2.2.3: Sep 17 2000</h3>
3220 <li>cleanup of entity handling code</li>
3221 <li>overall review of all loops in the parsers, all sprintf usage has been
3223 <li>Far better handling of larges Dtd. Validating against DocBook XML Dtd
3224 works smoothly now.</li>
3227 <h3>1.8.10: Sep 6 2000</h3>
3229 <li>bug fix release for some Gnome projects</li>
3232 <h3>2.2.2: August 12 2000</h3>
3234 <li>mostly bug fixes</li>
3235 <li>started adding routines to access xml parser context options</li>
3238 <h3>2.2.1: July 21 2000</h3>
3240 <li>a purely bug fixes release</li>
3241 <li>fixed an encoding support problem when parsing from a memory block</li>
3242 <li>fixed a DOCTYPE parsing problem</li>
3243 <li>removed a bug in the function allowing to override the memory
3244 allocation routines</li>
3247 <h3>2.2.0: July 14 2000</h3>
3249 <li>applied a lot of portability fixes</li>
3250 <li>better encoding support/cleanup and saving (content is now always
3251 encoded in UTF-8)</li>
3252 <li>the HTML parser now correctly handles encodings</li>
3253 <li>added xmlHasProp()</li>
3254 <li>fixed a serious problem with &#38;</li>
3255 <li>propagated the fix to FTP client</li>
3256 <li>cleanup, bugfixes, etc ...</li>
3257 <li>Added a page about <a href="encoding.html">libxml Internationalization
3261 <h3>1.8.9: July 9 2000</h3>
3263 <li>fixed the spec the RPMs should be better</li>
3264 <li>fixed a serious bug in the FTP implementation, released 1.8.9 to solve
3265 rpmfind users problem</li>
3268 <h3>2.1.1: July 1 2000</h3>
3270 <li>fixes a couple of bugs in the 2.1.0 packaging</li>
3271 <li>improvements on the HTML parser</li>
3274 <h3>2.1.0 and 1.8.8: June 29 2000</h3>
3276 <li>1.8.8 is mostly a commodity package for upgrading to libxml2 according
3277 to <a href="upgrade.html">new instructions</a>. It fixes a nasty problem
3278 about &#38; charref parsing</li>
3279 <li>2.1.0 also ease the upgrade from libxml v1 to the recent version. it
3280 also contains numerous fixes and enhancements:
3282 <li>added xmlStopParser() to stop parsing</li>
3283 <li>improved a lot parsing speed when there is large CDATA blocs</li>
3284 <li>includes XPath patches provided by Picdar Technology</li>
3285 <li>tried to fix as much as possible DTD validation and namespace
3286 related problems</li>
3287 <li>output to a given encoding has been added/tested</li>
3288 <li>lot of various fixes</li>
3293 <h3>2.0.0: Apr 12 2000</h3>
3295 <li>First public release of libxml2. If you are using libxml, it's a good
3296 idea to check the 1.x to 2.x upgrade instructions. NOTE: while initially
3297 scheduled for Apr 3 the release occurred only on Apr 12 due to massive
3299 <li>The include are now located under $prefix/include/libxml (instead of
3300 $prefix/include/gnome-xml), they also are referenced by
3301 <pre>#include <libxml/xxx.h></pre>
3303 <pre>#include "xxx.h"</pre>
3305 <li>a new URI module for parsing URIs and following strictly RFC 2396</li>
3306 <li>the memory allocation routines used by libxml can now be overloaded
3307 dynamically by using xmlMemSetup()</li>
3308 <li>The previously CVS only tool tester has been renamed
3309 <strong>xmllint</strong> and is now installed as part of the libxml2
3311 <li>The I/O interface has been revamped. There is now ways to plug in
3312 specific I/O modules, either at the URI scheme detection level using
3313 xmlRegisterInputCallbacks() or by passing I/O functions when creating a
3314 parser context using xmlCreateIOParserCtxt()</li>
3315 <li>there is a C preprocessor macro LIBXML_VERSION providing the version
3316 number of the libxml module in use</li>
3317 <li>a number of optional features of libxml can now be excluded at
3318 configure time (FTP/HTTP/HTML/XPath/Debug)</li>
3321 <h3>2.0.0beta: Mar 14 2000</h3>
3323 <li>This is a first Beta release of libxml version 2</li>
3324 <li>It's available only from<a href="ftp://xmlsoft.org/libxml2/">xmlsoft.org
3325 FTP</a>, it's packaged as libxml2-2.0.0beta and available as tar and
3327 <li>This version is now the head in the Gnome CVS base, the old one is
3328 available under the tag LIB_XML_1_X</li>
3329 <li>This includes a very large set of changes. From a programmatic point
3330 of view applications should not have to be modified too much, check the
3331 <a href="upgrade.html">upgrade page</a></li>
3332 <li>Some interfaces may changes (especially a bit about encoding).</li>
3333 <li>the updates includes:
3335 <li>fix I18N support. ISO-Latin-x/UTF-8/UTF-16 (nearly) seems correctly
3337 <li>Better handling of entities, especially well-formedness checking
3338 and proper PEref extensions in external subsets</li>
3339 <li>DTD conditional sections</li>
3340 <li>Validation now correctly handle entities content</li>
3341 <li><a href="http://rpmfind.net/tools/gdome/messages/0039.html">change
3342 structures to accommodate DOM</a></li>
3345 <li>Serious progress were made toward compliance, <a
3346 href="conf/result.html">here are the result of the test</a> against the
3347 OASIS testsuite (except the Japanese tests since I don't support that
3348 encoding yet). This URL is rebuilt every couple of hours using the CVS
3352 <h3>1.8.7: Mar 6 2000</h3>
3354 <li>This is a bug fix release:</li>
3355 <li>It is possible to disable the ignorable blanks heuristic used by
3356 libxml-1.x, a new function xmlKeepBlanksDefault(0) will allow this. Note
3357 that for adherence to XML spec, this behaviour will be disabled by
3358 default in 2.x . The same function will allow to keep compatibility for
3360 <li>Blanks in <a> </a> constructs are not ignored anymore,
3361 avoiding heuristic is really the Right Way :-\</li>
3362 <li>The unchecked use of snprintf which was breaking libxml-1.8.6
3363 compilation on some platforms has been fixed</li>
3364 <li>nanoftp.c nanohttp.c: Fixed '#' and '?' stripping when processing
3368 <h3>1.8.6: Jan 31 2000</h3>
3370 <li>added a nanoFTP transport module, debugged until the new version of <a
3371 href="http://rpmfind.net/linux/rpm2html/rpmfind.html">rpmfind</a> can use
3372 it without troubles</li>
3375 <h3>1.8.5: Jan 21 2000</h3>
3377 <li>adding APIs to parse a well balanced chunk of XML (production <a
3378 href="http://www.w3.org/TR/REC-xml#NT-content">[43] content</a> of the
3380 <li>fixed a hideous bug in xmlGetProp pointed by Rune.Djurhuus@fast.no</li>
3381 <li>Jody Goldberg <jgoldberg@home.com> provided another patch trying
3382 to solve the zlib checks problems</li>
3383 <li>The current state in gnome CVS base is expected to ship as 1.8.5 with
3387 <h3>1.8.4: Jan 13 2000</h3>
3389 <li>bug fixes, reintroduced xmlNewGlobalNs(), fixed xmlNewNs()</li>
3390 <li>all exit() call should have been removed from libxml</li>
3391 <li>fixed a problem with INCLUDE_WINSOCK on WIN32 platform</li>
3392 <li>added newDocFragment()</li>
3395 <h3>1.8.3: Jan 5 2000</h3>
3397 <li>a Push interface for the XML and HTML parsers</li>
3398 <li>a shell-like interface to the document tree (try tester --shell :-)</li>
3399 <li>lots of bug fixes and improvement added over XMas holidays</li>
3400 <li>fixed the DTD parsing code to work with the xhtml DTD</li>
3401 <li>added xmlRemoveProp(), xmlRemoveID() and xmlRemoveRef()</li>
3402 <li>Fixed bugs in xmlNewNs()</li>
3403 <li>External entity loading code has been revamped, now it uses
3404 xmlLoadExternalEntity(), some fix on entities processing were added</li>
3405 <li>cleaned up WIN32 includes of socket stuff</li>
3408 <h3>1.8.2: Dec 21 1999</h3>
3410 <li>I got another problem with includes and C++, I hope this issue is fixed
3411 for good this time</li>
3412 <li>Added a few tree modification functions: xmlReplaceNode,
3413 xmlAddPrevSibling, xmlAddNextSibling, xmlNodeSetName and
3414 xmlDocSetRootElement</li>
3415 <li>Tried to improve the HTML output with help from <a
3416 href="mailto:clahey@umich.edu">Chris Lahey</a></li>
3419 <h3>1.8.1: Dec 18 1999</h3>
3421 <li>various patches to avoid troubles when using libxml with C++ compilers
3422 the "namespace" keyword and C escaping in include files</li>
3423 <li>a problem in one of the core macros IS_CHAR was corrected</li>
3424 <li>fixed a bug introduced in 1.8.0 breaking default namespace processing,
3425 and more specifically the Dia application</li>
3426 <li>fixed a posteriori validation (validation after parsing, or by using a
3427 Dtd not specified in the original document)</li>
3428 <li>fixed a bug in</li>
3431 <h3>1.8.0: Dec 12 1999</h3>
3433 <li>cleanup, especially memory wise</li>
3434 <li>the parser should be more reliable, especially the HTML one, it should
3435 not crash, whatever the input !</li>
3436 <li>Integrated various patches, especially a speedup improvement for large
3437 dataset from <a href="mailto:cnygard@bellatlantic.net">Carl Nygard</a>,
3438 configure with --with-buffers to enable them.</li>
3439 <li>attribute normalization, oops should have been added long ago !</li>
3440 <li>attributes defaulted from DTDs should be available, xmlSetProp() now
3441 does entities escaping by default.</li>
3444 <h3>1.7.4: Oct 25 1999</h3>
3446 <li>Lots of HTML improvement</li>
3447 <li>Fixed some errors when saving both XML and HTML</li>
3448 <li>More examples, the regression tests should now look clean</li>
3449 <li>Fixed a bug with contiguous charref</li>
3452 <h3>1.7.3: Sep 29 1999</h3>
3454 <li>portability problems fixed</li>
3455 <li>snprintf was used unconditionally, leading to link problems on system
3456 were it's not available, fixed</li>
3459 <h3>1.7.1: Sep 24 1999</h3>
3461 <li>The basic type for strings manipulated by libxml has been renamed in
3462 1.7.1 from <strong>CHAR</strong> to <strong>xmlChar</strong>. The reason
3463 is that CHAR was conflicting with a predefined type on Windows. However
3464 on non WIN32 environment, compatibility is provided by the way of a
3465 <strong>#define </strong>.</li>
3466 <li>Changed another error : the use of a structure field called errno, and
3467 leading to troubles on platforms where it's a macro</li>
3470 <h3>1.7.0: Sep 23 1999</h3>
3472 <li>Added the ability to fetch remote DTD or parsed entities, see the <a
3473 href="html/libxml-nanohttp.html">nanohttp</a> module.</li>
3474 <li>Added an errno to report errors by another mean than a simple printf
3476 <li>Finished ID/IDREF support and checking when validation</li>
3477 <li>Serious memory leaks fixed (there is now a <a
3478 href="html/libxml-xmlmemory.html">memory wrapper</a> module)</li>
3479 <li>Improvement of <a href="http://www.w3.org/TR/xpath">XPath</a>
3481 <li>Added an HTML parser front-end</li>
3484 <h2><a name="XML">XML</a></h2>
3486 <p><a href="http://www.w3.org/TR/REC-xml">XML is a standard</a> for
3487 markup-based structured documents. Here is <a name="example">an example XML
3489 <pre><?xml version="1.0"?>
3490 <EXAMPLE prop1="gnome is great" prop2="&amp; linux too">
3492 <title>Welcome to Gnome</title>
3495 <title>The Linux adventure</title>
3496 <p>bla bla bla ...</p>
3497 <image href="linus.gif"/>
3498 <p>...</p>
3500 </EXAMPLE></pre>
3502 <p>The first line specifies that it is an XML document and gives useful
3503 information about its encoding. Then the rest of the document is a text
3504 format whose structure is specified by tags between brackets. <strong>Each
3505 tag opened has to be closed</strong>. XML is pedantic about this. However, if
3506 a tag is empty (no content), a single tag can serve as both the opening and
3507 closing tag if it ends with <code>/></code> rather than with
3508 <code>></code>. Note that, for example, the image tag has no content (just
3509 an attribute) and is closed by ending the tag with <code>/></code>.</p>
3511 <p>XML can be applied successfully to a wide range of tasks, ranging from
3512 long term structured document maintenance (where it follows the steps of
3513 SGML) to simple data encoding mechanisms like configuration file formatting
3514 (glade), spreadsheets (gnumeric), or even shorter lived documents such as
3515 WebDAV where it is used to encode remote calls between a client and a
3518 <h2><a name="XSLT">XSLT</a></h2>
3520 <p>Check <a href="http://xmlsoft.org/XSLT">the separate libxslt page</a></p>
3522 <p><a href="http://www.w3.org/TR/xslt">XSL Transformations</a>, is a
3523 language for transforming XML documents into other XML documents (or
3524 HTML/textual output).</p>
3526 <p>A separate library called libxslt is available implementing XSLT-1.0 for
3527 libxml2. This module "libxslt" too can be found in the Gnome SVN base.</p>
3529 <p>You can check the progresses on the libxslt <a
3530 href="http://xmlsoft.org/XSLT/ChangeLog.html">Changelog</a>.</p>
3532 <h2><a name="Python">Python and bindings</a></h2>
3534 <p>There are a number of language bindings and wrappers available for
3535 libxml2, the list below is not exhaustive. Please contact the <a
3536 href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a>
3537 (<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) in
3538 order to get updates to this list or to discuss the specific topic of libxml2
3539 or libxslt wrappers or bindings:</p>
3541 <li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a> seems the
3542 most up-to-date C++ bindings for libxml2, check the <a
3543 href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a>
3545 href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li>
3546 <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++ wrapper
3547 based on the gdome2 bindings</a> maintained by Tobias Peters.</li>
3548 <li>and a third C++ wrapper by Peter Jones <pjones@pmade.org>
3550 href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p>
3552 <li>XML::LibXML <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXML">Perl
3553 bindings</a> are available on CPAN, as well as XML::LibXSLT
3554 <a href="http://cpan.uwinnipeg.ca/dist/XML-LibXSLT">Perl libxslt
3556 <li>If you're interested into scripting XML processing, have a look at <a
3557 href="http://xsh.sourceforge.net/">XSH</a> an XML editing shell based on
3558 Libxml2 Perl bindings.</li>
3559 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provides an
3560 earlier version of the libxml/libxslt <a
3561 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li>
3562 <li>Gopal.V and Peter Minten develop <a
3563 href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set of
3564 C# libxml2 bindings.</li>
3565 <li>Petr Kozelka provides <a
3566 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue
3567 libxml2</a> with Kylix, Delphi and other Pascal compilers.</li>
3568 <li>Uwe Fechner also provides <a
3569 href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a DOM2
3570 implementation for Kylix2/D5/D6 from Borland.</li>
3571 <li>There is <a href="http://libxml.rubyforge.org/">bindings for Ruby</a>
3572 and libxml2 bindings are also available in Ruby through the <a
3573 href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a> module
3574 maintained by Tobias Peters.</li>
3575 <li>Steve Ball and contributors maintains <a
3576 href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings for
3578 <li>libxml2 and libxslt are the default XML libraries for PHP5.</li>
3579 <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a> is
3580 an effort to create a 100% JAXP-compatible Java wrapper for libxml2 and
3581 libxslt as part of GNU ClasspathX project.</li>
3582 <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look for
3583 <a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li>
3585 href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a>
3587 href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLib
3588 osax</a>. This is an osax for Mac OS X with a set of commands to
3589 implement in AppleScript the XML DOM, XPATH and XSLT. Also includes
3590 commands for Property-lists (Apple's fast lookup table XML format.)</li>
3591 <li>Francesco Montorsi developped <a
3592 href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a>
3593 wrappers that interface libxml2, allowing wxWidgets applications to
3594 load/save/edit XML instances.</li>
3597 <p>The distribution includes a set of Python bindings, which are guaranteed
3598 to be maintained as part of the library in the future, though the Python
3599 interface have not yet reached the completeness of the C API.</p>
3601 <p>Note that some of the Python purist dislike the default set of Python
3602 bindings, rather than complaining I suggest they have a look at <a
3603 href="http://lxml.de/">lxml the more pythonic bindings for libxml2
3604 and libxslt</a> and <a
3605 href="http://lxml.de/mailinglist/">check the mailing-list</a>.</p>
3607 <p><a href="mailto:stephane.bidoul@softwareag.com">Stéphane Bidoul</a>
3608 maintains <a href="http://users.skynet.be/sbi/libxml-python/">a Windows port
3609 of the Python bindings</a>.</p>
3611 <p>Note to people interested in building bindings, the API is formalized as
3612 <a href="libxml2-api.xml">an XML API description file</a> which allows to
3613 automate a large part of the Python bindings, this includes function
3614 descriptions, enums, structures, typedefs, etc... The Python script used to
3615 build the bindings is python/generator.py in the source distribution.</p>
3617 <p>To install the Python bindings there are 2 options:</p>
3619 <li>If you use an RPM based distribution, simply install the <a
3620 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-python
3621 RPM</a> (and if needed the <a
3622 href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-python
3624 <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-python
3625 module distribution</a> corresponding to your installed version of
3626 libxml2 and libxslt. Note that to install it you will need both libxml2
3627 and libxslt installed and run "python setup.py build install" in the
3631 <p>The distribution includes a set of examples and regression tests for the
3632 python bindings in the <code>python/tests</code> directory. Here are some
3633 excerpts from those tests:</p>
3637 <p>This is a basic test of the file interface and DOM navigation:</p>
3638 <pre>import libxml2, sys
3640 doc = libxml2.parseFile("tst.xml")
3641 if doc.name != "tst.xml":
3642 print "doc.name failed"
3645 if root.name != "doc":
3646 print "root.name failed"
3648 child = root.children
3649 if child.name != "foo":
3650 print "child.name failed"
3654 <p>The Python module is called libxml2; parseFile is the equivalent of
3655 xmlParseFile (most of the bindings are automatically generated, and the xml
3656 prefix is removed and the casing convention are kept). All node seen at the
3657 binding level share the same subset of accessors:</p>
3659 <li><code>name</code> : returns the node name</li>
3660 <li><code>type</code> : returns a string indicating the node type</li>
3661 <li><code>content</code> : returns the content of the node, it is based on
3662 xmlNodeGetContent() and hence is recursive.</li>
3663 <li><code>parent</code> , <code>children</code>, <code>last</code>,
3664 <code>next</code>, <code>prev</code>, <code>doc</code>,
3665 <code>properties</code>: pointing to the associated element in the tree,
3666 those may return None in case no such link exists.</li>
3669 <p>Also note the need to explicitly deallocate documents with freeDoc() .
3670 Reference counting for libxml2 trees would need quite a lot of work to
3671 function properly, and rather than risk memory leaks if not implemented
3672 correctly it sounds safer to have an explicit function to free a tree. The
3673 wrapper python objects like doc, root or child are them automatically garbage
3676 <h3>validate.py:</h3>
3678 <p>This test check the validation interfaces and redirection of error
3682 #deactivate error messages from the validation
3683 def noerr(ctx, str):
3686 libxml2.registerErrorHandler(noerr, None)
3688 ctxt = libxml2.createFileParserCtxt("invalid.xml")
3690 ctxt.parseDocument()
3692 valid = ctxt.isValid()
3695 print "validity check failed"</pre>
3697 <p>The first thing to notice is the call to registerErrorHandler(), it
3698 defines a new error handler global to the library. It is used to avoid seeing
3699 the error messages when trying to validate the invalid document.</p>
3701 <p>The main interest of that test is the creation of a parser context with
3702 createFileParserCtxt() and how the behaviour can be changed before calling
3703 parseDocument() . Similarly the information resulting from the parsing phase
3704 is also available using context methods.</p>
3706 <p>Contexts like nodes are defined as class and the libxml2 wrappers maps the
3707 C function interfaces in terms of objects method as much as possible. The
3708 best to get a complete view of what methods are supported is to look at the
3709 libxml2.py module containing all the wrappers.</p>
3713 <p>This test show how to activate the push parser interface:</p>
3716 ctxt = libxml2.createPushParser(None, "<foo", 4, "test.xml")
3717 ctxt.parseChunk("/>", 2, 1)
3722 <p>The context is created with a special call based on the
3723 xmlCreatePushParser() from the C library. The first argument is an optional
3724 SAX callback object, then the initial set of data, the length and the name of
3725 the resource in case URI-References need to be computed by the parser.</p>
3727 <p>Then the data are pushed using the parseChunk() method, the last call
3728 setting the third argument terminate to 1.</p>
3730 <h3>pushSAX.py:</h3>
3732 <p>this test show the use of the event based parsing interfaces. In this case
3733 the parser does not build a document, but provides callback information as
3734 the parser makes progresses analyzing the data being provided:</p>
3739 def startDocument(self):
3741 log = log + "startDocument:"
3743 def endDocument(self):
3745 log = log + "endDocument:"
3747 def startElement(self, tag, attrs):
3749 log = log + "startElement %s %s:" % (tag, attrs)
3751 def endElement(self, tag):
3753 log = log + "endElement %s:" % (tag)
3755 def characters(self, data):
3757 log = log + "characters: %s:" % (data)
3759 def warning(self, msg):
3761 log = log + "warning: %s:" % (msg)
3763 def error(self, msg):
3765 log = log + "error: %s:" % (msg)
3767 def fatalError(self, msg):
3769 log = log + "fatalError: %s:" % (msg)
3771 handler = callback()
3773 ctxt = libxml2.createPushParser(handler, "<foo", 4, "test.xml")
3774 chunk = " url='tst'>b"
3775 ctxt.parseChunk(chunk, len(chunk), 0)
3776 chunk = "ar</foo>"
3777 ctxt.parseChunk(chunk, len(chunk), 1)
3779 reference = "startDocument:startElement foo {'url': 'tst'}:" + \
3780 "characters: bar:endElement foo:endDocument:"
3781 if log != reference:
3782 print "Error got: %s" % log
3783 print "Expected: %s" % reference</pre>
3785 <p>The key object in that test is the handler, it provides a number of entry
3786 points which can be called by the parser as it makes progresses to indicate
3787 the information set obtained. The full set of callback is larger than what
3788 the callback class in that specific example implements (see the SAX
3789 definition for a complete list). The wrapper will only call those supplied by
3790 the object when activated. The startElement receives the names of the element
3791 and a dictionary containing the attributes carried by this element.</p>
3793 <p>Also note that the reference string generated from the callback shows a
3794 single character call even though the string "bar" is passed to the parser
3795 from 2 different call to parseChunk()</p>
3799 <p>This is a basic test of XPath wrappers support</p>
3802 doc = libxml2.parseFile("tst.xml")
3803 ctxt = doc.xpathNewContext()
3804 res = ctxt.xpathEval("//*")
3806 print "xpath query: wrong node set size"
3808 if res[0].name != "doc" or res[1].name != "foo":
3809 print "xpath query: wrong node set value"
3812 ctxt.xpathFreeContext()</pre>
3814 <p>This test parses a file, then create an XPath context to evaluate XPath
3815 expression on it. The xpathEval() method execute an XPath query and returns
3816 the result mapped in a Python way. String and numbers are natively converted,
3817 and node sets are returned as a tuple of libxml2 Python nodes wrappers. Like
3818 the document, the XPath context need to be freed explicitly, also not that
3819 the result of the XPath query may point back to the document tree and hence
3820 the document must be freed after the result of the query is used.</p>
3822 <h3>xpathext.py:</h3>
3824 <p>This test shows how to extend the XPath engine with functions written in
3831 doc = libxml2.parseFile("tst.xml")
3832 ctxt = doc.xpathNewContext()
3833 libxml2.registerXPathFunction(ctxt._o, "foo", None, foo)
3834 res = ctxt.xpathEval("foo(1)")
3836 print "xpath extension failure"
3838 ctxt.xpathFreeContext()</pre>
3840 <p>Note how the extension function is registered with the context (but that
3841 part is not yet finalized, this may change slightly in the future).</p>
3843 <h3>tstxpath.py:</h3>
3845 <p>This test is similar to the previous one but shows how the extension
3846 function can access the XPath evaluation context:</p>
3847 <pre>def foo(ctx, x):
3851 # test that access to the XPath evaluation contexts
3853 pctxt = libxml2.xpathParserContext(_obj=ctx)
3854 ctxt = pctxt.context()
3855 called = ctxt.function()
3858 <p>All the interfaces around the XPath parser(or rather evaluation) context
3859 are not finalized, but it should be sufficient to do contextual work at the
3860 evaluation point.</p>
3862 <h3>Memory debugging:</h3>
3864 <p>last but not least, all tests starts with the following prologue:</p>
3865 <pre>#memory debug specific
3866 libxml2.debugMemory(1)</pre>
3868 <p>and ends with the following epilogue:</p>
3869 <pre>#memory debug specific
3870 libxml2.cleanupParser()
3871 if libxml2.debugMemory(1) == 0:
3874 print "Memory leak %d bytes" % (libxml2.debugMemory(1))
3875 libxml2.dumpMemory()</pre>
3877 <p>Those activate the memory debugging interface of libxml2 where all
3878 allocated block in the library are tracked. The prologue then cleans up the
3879 library state and checks that all allocated memory has been freed. If not it
3880 calls dumpMemory() which saves that list in a <code>.memdump</code> file.</p>
3882 <h2><a name="architecture">libxml2 architecture</a></h2>
3884 <p>Libxml2 is made of multiple components; some of them are optional, and
3885 most of the block interfaces are public. The main components are:</p>
3887 <li>an Input/Output layer</li>
3888 <li>FTP and HTTP client layers (optional)</li>
3889 <li>an Internationalization layer managing the encodings support</li>
3890 <li>a URI module</li>
3891 <li>the XML parser and its basic SAX interface</li>
3892 <li>an HTML parser using the same SAX interface (optional)</li>
3893 <li>a SAX tree module to build an in-memory DOM representation</li>
3894 <li>a tree module to manipulate the DOM representation</li>
3895 <li>a validation module using the DOM representation (optional)</li>
3896 <li>an XPath module for global lookup in a DOM representation
3898 <li>a debug module (optional)</li>
3901 <p>Graphically this gives the following:</p>
3903 <p><img src="libxml.gif" alt="a graphical view of the various"></p>
3907 <h2><a name="tree">The tree output</a></h2>
3909 <p>The parser returns a tree built during the document analysis. The value
3910 returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an
3911 <strong>xmlDoc</strong> structure). This structure contains information such
3912 as the file name, the document type, and a <strong>children</strong> pointer
3913 which is the root of the document (or more exactly the first child under the
3914 root which is the document). The tree is made of <strong>xmlNode</strong>s,
3915 chained in double-linked lists of siblings and with a children<->parent
3916 relationship. An xmlNode can also carry properties (a chain of xmlAttr
3917 structures). An attribute may have a value which is a list of TEXT or
3918 ENTITY_REF nodes.</p>
3920 <p>Here is an example (erroneous with respect to the XML spec since there
3921 should be only one ELEMENT under the root):</p>
3923 <p><img src="structure.gif" alt=" structure.gif "></p>
3925 <p>In the source package there is a small program (not installed by default)
3926 called <strong>xmllint</strong> which parses XML files given as argument and
3927 prints them back as parsed. This is useful for detecting errors both in XML
3928 code and in the XML parser itself. It has an option <strong>--debug</strong>
3929 which prints the actual in-memory structure of the document; here is the
3930 result with the <a href="#example">example</a> given before:</p>
3937 content=gnome is great
3945 content=Welcome to Gnome
3949 content=The Linux adventure
3952 content=bla bla bla ...
3961 <p>This should be useful for learning the internal representation model.</p>
3963 <h2><a name="interface">The SAX interface</a></h2>
3965 <p>Sometimes the DOM tree output is just too large to fit reasonably into
3966 memory. In that case (and if you don't expect to save back the XML document
3967 loaded using libxml), it's better to use the SAX interface of libxml. SAX is
3968 a <strong>callback-based interface</strong> to the parser. Before parsing,
3969 the application layer registers a customized set of callbacks which are
3970 called by the library as it progresses through the XML input.</p>
3972 <p>To get more detailed step-by-step guidance on using the SAX interface of
3974 href="http://www.jamesh.id.au/articles/libxml-sax/libxml-sax.html">nice
3975 documentation</a>.written by <a href="mailto:james@daa.com.au">James
3978 <p>You can debug the SAX behaviour by using the <strong>testSAX</strong>
3979 program located in the gnome-xml module (it's usually not shipped in the
3980 binary packages of libxml, but you can find it in the tar source
3981 distribution). Here is the sequence of callbacks that would be reported by
3982 testSAX when parsing the example XML document shown earlier:</p>
3983 <pre>SAX.setDocumentLocator()
3986 SAX.startElement(EXAMPLE, prop1='gnome is great', prop2='&amp; linux too')
3987 SAX.characters( , 3)
3988 SAX.startElement(head)
3989 SAX.characters( , 4)
3990 SAX.startElement(title)
3991 SAX.characters(Welcome to Gnome, 16)
3992 SAX.endElement(title)
3993 SAX.characters( , 3)
3994 SAX.endElement(head)
3995 SAX.characters( , 3)
3996 SAX.startElement(chapter)
3997 SAX.characters( , 4)
3998 SAX.startElement(title)
3999 SAX.characters(The Linux adventure, 19)
4000 SAX.endElement(title)
4001 SAX.characters( , 4)
4003 SAX.characters(bla bla bla ..., 15)
4005 SAX.characters( , 4)
4006 SAX.startElement(image, href='linus.gif')
4007 SAX.endElement(image)
4008 SAX.characters( , 4)
4010 SAX.characters(..., 3)
4012 SAX.characters( , 3)
4013 SAX.endElement(chapter)
4014 SAX.characters( , 1)
4015 SAX.endElement(EXAMPLE)
4016 SAX.endDocument()</pre>
4018 <p>Most of the other interfaces of libxml2 are based on the DOM tree-building
4019 facility, so nearly everything up to the end of this document presupposes the
4020 use of the standard DOM tree build. Note that the DOM tree itself is built by
4021 a set of registered default callbacks, without internal specific
4024 <h2><a name="Validation">Validation & DTDs</a></h2>
4026 <p>Table of Content:</p>
4028 <li><a href="#General5">General overview</a></li>
4029 <li><a href="#definition">The definition</a></li>
4030 <li><a href="#Simple">Simple rules</a>
4032 <li><a href="#reference">How to reference a DTD from a document</a></li>
4033 <li><a href="#Declaring">Declaring elements</a></li>
4034 <li><a href="#Declaring1">Declaring attributes</a></li>
4037 <li><a href="#Some">Some examples</a></li>
4038 <li><a href="#validate">How to validate</a></li>
4039 <li><a href="#Other">Other resources</a></li>
4042 <h3><a name="General5">General overview</a></h3>
4044 <p>Well what is validation and what is a DTD ?</p>
4046 <p>DTD is the acronym for Document Type Definition. This is a description of
4047 the content for a family of XML files. This is part of the XML 1.0
4048 specification, and allows one to describe and verify that a given document
4049 instance conforms to the set of rules detailing its structure and content.</p>
4051 <p>Validation is the process of checking a document against a DTD (more
4052 generally against a set of construction rules).</p>
4054 <p>The validation process and building DTDs are the two most difficult parts
4055 of the XML life cycle. Briefly a DTD defines all the possible elements to be
4056 found within your document, what is the formal shape of your document tree
4057 (by defining the allowed content of an element; either text, a regular
4058 expression for the allowed list of children, or mixed content i.e. both text
4059 and children). The DTD also defines the valid attributes for all elements and
4060 the types of those attributes.</p>
4062 <h3><a name="definition1">The definition</a></h3>
4064 <p>The <a href="http://www.w3.org/TR/REC-xml">W3C XML Recommendation</a> (<a
4065 href="http://www.xml.com/axml/axml.html">Tim Bray's annotated version of
4068 <li><a href="http://www.w3.org/TR/REC-xml#elemdecls">Declaring
4070 <li><a href="http://www.w3.org/TR/REC-xml#attdecls">Declaring
4074 <p>(unfortunately) all this is inherited from the SGML world, the syntax is
4077 <h3><a name="Simple1">Simple rules</a></h3>
4079 <p>Writing DTDs can be done in many ways. The rules to build them if you need
4080 something permanent or something which can evolve over time can be radically
4081 different. Really complex DTDs like DocBook ones are flexible but quite
4082 harder to design. I will just focus on DTDs for a formats with a fixed simple
4083 structure. It is just a set of basic rules, and definitely not exhaustive nor
4084 usable for complex DTD design.</p>
4086 <h4><a name="reference1">How to reference a DTD from a document</a>:</h4>
4088 <p>Assuming the top element of the document is <code>spec</code> and the dtd
4089 is placed in the file <code>mydtd</code> in the subdirectory
4090 <code>dtds</code> of the directory from where the document were loaded:</p>
4092 <p><code><!DOCTYPE spec SYSTEM "dtds/mydtd"></code></p>
4096 <li>The system string is actually an URI-Reference (as defined in <a
4097 href="http://www.ietf.org/rfc/rfc2396.txt">RFC 2396</a>) so you can use a
4098 full URL string indicating the location of your DTD on the Web. This is a
4099 really good thing to do if you want others to validate your document.</li>
4100 <li>It is also possible to associate a <code>PUBLIC</code> identifier (a
4101 magic string) so that the DTD is looked up in catalogs on the client side
4102 without having to locate it on the web.</li>
4103 <li>A DTD contains a set of element and attribute declarations, but they
4104 don't define what the root of the document should be. This is explicitly
4105 told to the parser/validator as the first element of the
4106 <code>DOCTYPE</code> declaration.</li>
4109 <h4><a name="Declaring2">Declaring elements</a>:</h4>
4111 <p>The following declares an element <code>spec</code>:</p>
4113 <p><code><!ELEMENT spec (front, body, back?)></code></p>
4115 <p>It also expresses that the spec element contains one <code>front</code>,
4116 one <code>body</code> and one optional <code>back</code> children elements in
4117 this order. The declaration of one element of the structure and its content
4118 are done in a single declaration. Similarly the following declares
4119 <code>div1</code> elements:</p>
4121 <p><code><!ELEMENT div1 (head, (p | list | note)*, div2?)></code></p>
4123 <p>which means div1 contains one <code>head</code> then a series of optional
4124 <code>p</code>, <code>list</code>s and <code>note</code>s and then an
4125 optional <code>div2</code>. And last but not least an element can contain
4128 <p><code><!ELEMENT b (#PCDATA)></code></p>
4130 <p><code>b</code> contains text or being of mixed content (text and elements
4131 in no particular order):</p>
4133 <p><code><!ELEMENT p (#PCDATA|a|ul|b|i|em)*></code></p>
4135 <p><code>p </code>can contain text or <code>a</code>, <code>ul</code>,
4136 <code>b</code>, <code>i </code>or <code>em</code> elements in no particular
4139 <h4><a name="Declaring1">Declaring attributes</a>:</h4>
4141 <p>Again the attributes declaration includes their content definition:</p>
4143 <p><code><!ATTLIST termdef name CDATA #IMPLIED></code></p>
4145 <p>means that the element <code>termdef</code> can have a <code>name</code>
4146 attribute containing text (<code>CDATA</code>) and which is optional
4147 (<code>#IMPLIED</code>). The attribute value can also be defined within a
4150 <p><code><!ATTLIST list type (bullets|ordered|glossary)
4151 "ordered"></code></p>
4153 <p>means <code>list</code> element have a <code>type</code> attribute with 3
4154 allowed values "bullets", "ordered" or "glossary" and which default to
4155 "ordered" if the attribute is not explicitly specified.</p>
4157 <p>The content type of an attribute can be text (<code>CDATA</code>),
4158 anchor/reference/references
4159 (<code>ID</code>/<code>IDREF</code>/<code>IDREFS</code>), entity(ies)
4160 (<code>ENTITY</code>/<code>ENTITIES</code>) or name(s)
4161 (<code>NMTOKEN</code>/<code>NMTOKENS</code>). The following defines that a
4162 <code>chapter</code> element can have an optional <code>id</code> attribute
4163 of type <code>ID</code>, usable for reference from attribute of type
4166 <p><code><!ATTLIST chapter id ID #IMPLIED></code></p>
4168 <p>The last value of an attribute definition can be <code>#REQUIRED
4169 </code>meaning that the attribute has to be given, <code>#IMPLIED</code>
4170 meaning that it is optional, or the default value (possibly prefixed by
4171 <code>#FIXED</code> if it is the only allowed).</p>
4175 <li>Usually the attributes pertaining to a given element are declared in a
4176 single expression, but it is just a convention adopted by a lot of DTD
4178 <pre><!ATTLIST termdef
4180 name CDATA #IMPLIED></pre>
4181 <p>The previous construct defines both <code>id</code> and
4182 <code>name</code> attributes for the element <code>termdef</code>.</p>
4186 <h3><a name="Some1">Some examples</a></h3>
4188 <p>The directory <code>test/valid/dtds/</code> in the libxml2 distribution
4189 contains some complex DTD examples. The example in the file
4190 <code>test/valid/dia.xml</code> shows an XML file where the simple DTD is
4191 directly included within the document.</p>
4193 <h3><a name="validate1">How to validate</a></h3>
4195 <p>The simplest way is to use the xmllint program included with libxml. The
4196 <code>--valid</code> option turns-on validation of the files given as input.
4197 For example the following validates a copy of the first revision of the XML
4198 1.0 specification:</p>
4200 <p><code>xmllint --valid --noout test/valid/REC-xml-19980210.xml</code></p>
4202 <p>the -- noout is used to disable output of the resulting tree.</p>
4204 <p>The <code>--dtdvalid dtd</code> allows validation of the document(s)
4205 against a given DTD.</p>
4207 <p>Libxml2 exports an API to handle DTDs and validation, check the <a
4208 href="http://xmlsoft.org/html/libxml-valid.html">associated
4209 description</a>.</p>
4211 <h3><a name="Other1">Other resources</a></h3>
4213 <p>DTDs are as old as SGML. So there may be a number of examples on-line, I
4214 will just list one for now, others pointers welcome:</p>
4216 <li><a href="http://www.xml101.com:8081/dtd/">XML-101 DTD</a></li>
4219 <p>I suggest looking at the examples found under test/valid/dtd and any of
4220 the large number of books available on XML. The dia example in test/valid
4221 should be both simple and complete enough to allow you to build your own.</p>
4225 <h2><a name="Memory">Memory Management</a></h2>
4227 <p>Table of Content:</p>
4229 <li><a href="#General3">General overview</a></li>
4230 <li><a href="#setting">Setting libxml2 set of memory routines</a></li>
4231 <li><a href="#cleanup">Cleaning up after using the library</a></li>
4232 <li><a href="#Debugging">Debugging routines</a></li>
4233 <li><a href="#General4">General memory requirements</a></li>
4234 <li><a href="#Compacting">Returning memory to the kernel</a></li>
4237 <h3><a name="General3">General overview</a></h3>
4239 <p>The module <code><a
4240 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlmemory.h</a></code>
4241 provides the interfaces to the libxml2 memory system:</p>
4243 <li>libxml2 does not use the libc memory allocator directly but xmlFree(),
4244 xmlMalloc() and xmlRealloc()</li>
4245 <li>those routines can be reallocated to a specific set of routine, by
4246 default the libc ones i.e. free(), malloc() and realloc()</li>
4247 <li>the xmlmemory.c module includes a set of debugging routine</li>
4250 <h3><a name="setting">Setting libxml2 set of memory routines</a></h3>
4252 <p>It is sometimes useful to not use the default memory allocator, either for
4253 debugging, analysis or to implement a specific behaviour on memory management
4254 (like on embedded systems). Two function calls are available to do so:</p>
4256 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemGet
4257 ()</a> which return the current set of functions in use by the parser</li>
4259 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemSetup()</a>
4260 which allow to set up a new set of memory allocation functions</li>
4263 <p>Of course a call to xmlMemSetup() should probably be done before calling
4264 any other libxml2 routines (unless you are sure your allocations routines are
4267 <h3><a name="cleanup">Cleaning up after using the library</a></h3>
4269 <p>Libxml2 is not stateless, there is a few set of memory structures needing
4270 allocation before the parser is fully functional (some encoding structures
4271 for example). This also mean that once parsing is finished there is a tiny
4272 amount of memory (a few hundred bytes) which can be recollected if you don't
4273 reuse the library or any document built with it:</p>
4275 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlCleanupParser
4276 ()</a> is a centralized routine to free the library state and data. Note
4277 that it won't deallocate any produced tree if any (use the xmlFreeDoc()
4278 and related routines for this). This should be called only when the library
4279 is not used anymore.</li>
4280 <li><a href="http://xmlsoft.org/html/libxml-parser.html">xmlInitParser
4281 ()</a> is the dual routine allowing to preallocate the parsing state
4282 which can be useful for example to avoid initialization reentrancy
4283 problems when using libxml2 in multithreaded applications</li>
4286 <p>Generally xmlCleanupParser() is safe assuming no parsing is ongoing and
4287 no document is still being used, if needed the state will be rebuild at the
4288 next invocation of parser routines (or by xmlInitParser()), but be careful
4289 of the consequences in multithreaded applications.</p>
4291 <h3><a name="Debugging">Debugging routines</a></h3>
4293 <p>When configured using --with-mem-debug flag (off by default), libxml2 uses
4294 a set of memory allocation debugging routines keeping track of all allocated
4295 blocks and the location in the code where the routine was called. A couple of
4296 other debugging routines allow to dump the memory allocated infos to a file
4297 or call a specific routine when a given block number is allocated:</p>
4300 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMallocLoc()</a>
4302 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlReallocLoc()</a>
4304 href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemStrdupLoc()</a>
4305 are the memory debugging replacement allocation routines</li>
4306 <li><a href="http://xmlsoft.org/html/libxml-xmlmemory.html">xmlMemoryDump
4307 ()</a> dumps all the information about the allocated memory block lefts
4308 in the <code>.memdump</code> file</li>
4311 <p>When developing libxml2 memory debug is enabled, the tests programs call
4312 xmlMemoryDump () and the "make test" regression tests will check for any
4313 memory leak during the full regression test sequence, this helps a lot
4314 ensuring that libxml2 does not leak memory and bullet proof memory
4315 allocations use (some libc implementations are known to be far too permissive
4316 resulting in major portability problems!).</p>
4318 <p>If the .memdump reports a leak, it displays the allocation function and
4319 also tries to give some information about the content and structure of the
4320 allocated blocks left. This is sufficient in most cases to find the culprit,
4321 but not always. Assuming the allocation problem is reproducible, it is
4322 possible to find more easily:</p>
4324 <li>write down the block number xxxx not allocated</li>
4325 <li>export the environment variable XML_MEM_BREAKPOINT=xxxx , the easiest
4326 when using GDB is to simply give the command
4327 <p><code>set environment XML_MEM_BREAKPOINT xxxx</code></p>
4328 <p>before running the program.</p>
4330 <li>run the program under a debugger and set a breakpoint on
4331 xmlMallocBreakpoint() a specific function called when this precise block
4333 <li>when the breakpoint is reached you can then do a fine analysis of the
4334 allocation an step to see the condition resulting in the missing
4338 <p>I used to use a commercial tool to debug libxml2 memory problems but after
4339 noticing that it was not detecting memory leaks that simple mechanism was
4340 used and proved extremely efficient until now. Lately I have also used <a
4341 href="http://developer.kde.org/~sewardj/">valgrind</a> with quite some
4342 success, it is tied to the i386 architecture since it works by emulating the
4343 processor and instruction set, it is slow but extremely efficient, i.e. it
4344 spot memory usage errors in a very precise way.</p>
4346 <h3><a name="General4">General memory requirements</a></h3>
4348 <p>How much libxml2 memory require ? It's hard to tell in average it depends
4349 of a number of things:</p>
4351 <li>the parser itself should work in a fixed amount of memory, except for
4352 information maintained about the stacks of names and entities locations.
4353 The I/O and encoding handlers will probably account for a few KBytes.
4354 This is true for both the XML and HTML parser (though the HTML parser
4355 need more state).</li>
4356 <li>If you are generating the DOM tree then memory requirements will grow
4357 nearly linear with the size of the data. In general for a balanced
4358 textual document the internal memory requirement is about 4 times the
4359 size of the UTF8 serialization of this document (example the XML-1.0
4360 recommendation is a bit more of 150KBytes and takes 650KBytes of main
4361 memory when parsed). Validation will add a amount of memory required for
4362 maintaining the external Dtd state which should be linear with the
4363 complexity of the content model defined by the Dtd</li>
4364 <li>If you need to work with fixed memory requirements or don't need the
4365 full DOM tree then using the <a href="xmlreader.html">xmlReader
4366 interface</a> is probably the best way to proceed, it still allows to
4367 validate or operate on subset of the tree if needed.</li>
4368 <li>If you don't care about the advanced features of libxml2 like
4369 validation, DOM, XPath or XPointer, don't use entities, need to work with
4370 fixed memory requirements, and try to get the fastest parsing possible
4371 then the SAX interface should be used, but it has known restrictions.</li>
4375 <h3><a name="Compacting">Returning memory to the kernel</a></h3>
4377 <p>You may encounter that your process using libxml2 does not have a
4378 reduced memory usage although you freed the trees. This is because
4379 libxml2 allocates memory in a number of small chunks. When freeing one
4380 of those chunks, the OS may decide that giving this little memory back
4381 to the kernel will cause too much overhead and delay the operation. As
4382 all chunks are this small, they get actually freed but not returned to
4383 the kernel. On systems using glibc, there is a function call
4384 "malloc_trim" from malloc.h which does this missing operation (note that
4385 it is allowed to fail). Thus, after freeing your tree you may simply try
4386 "malloc_trim(0);" to really get the memory back. If your OS does not
4387 provide malloc_trim, try searching for a similar function.</p>
4390 <h2><a name="Encodings">Encodings support</a></h2>
4392 <p>If you are not really familiar with Internationalization (usual shortcut
4393 is I18N) , Unicode, characters and glyphs, I suggest you read a <a
4394 href="http://www.tbray.org/ongoing/When/200x/2003/04/06/Unicode">presentation</a>
4395 by Tim Bray on Unicode and why you should care about it.</p>
4397 <p>If you don't understand why <b>it does not make sense to have a string
4398 without knowing what encoding it uses</b>, then as Joel Spolsky said <a
4399 href="http://www.joelonsoftware.com/articles/Unicode.html">please do not
4400 write another line of code until you finish reading that article.</a>. It is
4401 a prerequisite to understand this page, and avoid a lot of problems with
4402 libxml2, XML or text processing in general.</p>
4404 <p>Table of Content:</p>
4406 <li><a href="encoding.html#What">What does internationalization support
4408 <li><a href="encoding.html#internal">The internal encoding, how and
4410 <li><a href="encoding.html#implemente">How is it implemented ?</a></li>
4411 <li><a href="encoding.html#Default">Default supported encodings</a></li>
4412 <li><a href="encoding.html#extend">How to extend the existing
4416 <h3><a name="What">What does internationalization support mean ?</a></h3>
4418 <p>XML was designed from the start to allow the support of any character set
4419 by using Unicode. Any conformant XML parser has to support the UTF-8 and
4420 UTF-16 default encodings which can both express the full unicode ranges. UTF8
4421 is a variable length encoding whose greatest points are to reuse the same
4422 encoding for ASCII and to save space for Western encodings, but it is a bit
4423 more complex to handle in practice. UTF-16 use 2 bytes per character (and
4424 sometimes combines two pairs), it makes implementation easier, but looks a
4425 bit overkill for Western languages encoding. Moreover the XML specification
4426 allows the document to be encoded in other encodings at the condition that
4427 they are clearly labeled as such. For example the following is a wellformed
4428 XML document encoded in ISO-8859-1 and using accentuated letters that we
4429 French like for both markup and content:</p>
4430 <pre><?xml version="1.0" encoding="ISO-8859-1"?>
4431 <très>là </très></pre>
4433 <p>Having internationalization support in libxml2 means the following:</p>
4435 <li>the document is properly parsed</li>
4436 <li>information about it's encoding is saved</li>
4437 <li>it can be modified</li>
4438 <li>it can be saved in its original encoding</li>
4439 <li>it can also be saved in another encoding supported by libxml2 (for
4440 example straight UTF8 or even an ASCII form)</li>
4443 <p>Another very important point is that the whole libxml2 API, with the
4444 exception of a few routines to read with a specific encoding or save to a
4445 specific encoding, is completely agnostic about the original encoding of the
4448 <p>It should be noted too that the HTML parser embedded in libxml2 now obey
4449 the same rules too, the following document will be (as of 2.2.2) handled in
4450 an internationalized fashion by libxml2 too:</p>
4451 <pre><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"
4452 "http://www.w3.org/TR/REC-html40/loose.dtd">
4453 <html lang="fr">
4455 <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1">
4458 <p>W3C crée des standards pour le Web.</body>
4461 <h3><a name="internal">The internal encoding, how and why</a></h3>
4463 <p>One of the core decisions was to force all documents to be converted to a
4464 default internal encoding, and that encoding to be UTF-8, here are the
4465 rationales for those choices:</p>
4467 <li>keeping the native encoding in the internal form would force the libxml
4468 users (or the code associated) to be fully aware of the encoding of the
4469 original document, for examples when adding a text node to a document,
4470 the content would have to be provided in the document encoding, i.e. the
4471 client code would have to check it before hand, make sure it's conformant
4472 to the encoding, etc ... Very hard in practice, though in some specific
4473 cases this may make sense.</li>
4474 <li>the second decision was which encoding. From the XML spec only UTF8 and
4475 UTF16 really makes sense as being the two only encodings for which there
4476 is mandatory support. UCS-4 (32 bits fixed size encoding) could be
4477 considered an intelligent choice too since it's a direct Unicode mapping
4478 support. I selected UTF-8 on the basis of efficiency and compatibility
4479 with surrounding software:
4481 <li>UTF-8 while a bit more complex to convert from/to (i.e. slightly
4482 more costly to import and export CPU wise) is also far more compact
4483 than UTF-16 (and UCS-4) for a majority of the documents I see it used
4484 for right now (RPM RDF catalogs, advogato data, various configuration
4485 file formats, etc.) and the key point for today's computer
4486 architecture is efficient uses of caches. If one nearly double the
4487 memory requirement to store the same amount of data, this will trash
4488 caches (main memory/external caches/internal caches) and my take is
4489 that this harms the system far more than the CPU requirements needed
4490 for the conversion to UTF-8</li>
4491 <li>Most of libxml2 version 1 users were using it with straight ASCII
4492 most of the time, doing the conversion with an internal encoding
4493 requiring all their code to be rewritten was a serious show-stopper
4494 for using UTF-16 or UCS-4.</li>
4495 <li>UTF-8 is being used as the de-facto internal encoding standard for
4496 related code like the <a href="http://www.pango.org/">pango</a>
4497 upcoming Gnome text widget, and a lot of Unix code (yet another place
4498 where Unix programmer base takes a different approach from Microsoft
4499 - they are using UTF-16)</li>
4504 <p>What does this mean in practice for the libxml2 user:</p>
4506 <li>xmlChar, the libxml2 data type is a byte, those bytes must be assembled
4507 as UTF-8 valid strings. The proper way to terminate an xmlChar * string
4508 is simply to append 0 byte, as usual.</li>
4509 <li>One just need to make sure that when using chars outside the ASCII set,
4510 the values has been properly converted to UTF-8</li>
4513 <h3><a name="implemente">How is it implemented ?</a></h3>
4515 <p>Let's describe how all this works within libxml, basically the I18N
4516 (internationalization) support get triggered only during I/O operation, i.e.
4517 when reading a document or saving one. Let's look first at the reading
4520 <li>when a document is processed, we usually don't know the encoding, a
4521 simple heuristic allows to detect UTF-16 and UCS-4 from encodings where
4522 the ASCII range (0-0x7F) maps with ASCII</li>
4523 <li>the xml declaration if available is parsed, including the encoding
4524 declaration. At that point, if the autodetected encoding is different
4525 from the one declared a call to xmlSwitchEncoding() is issued.</li>
4526 <li>If there is no encoding declaration, then the input has to be in either
4527 UTF-8 or UTF-16, if it is not then at some point when processing the
4528 input, the converter/checker of UTF-8 form will raise an encoding error.
4529 You may end-up with a garbled document, or no document at all ! Example:
4530 <pre>~/XML -> ./xmllint err.xml
4531 err.xml:1: error: Input is not proper UTF-8, indicate encoding !
4532 <très>là </très>
4534 err.xml:1: error: Bytes: 0xE8 0x73 0x3E 0x6C
4535 <très>là </très>
4538 <li>xmlSwitchEncoding() does an encoding name lookup, canonicalize it, and
4539 then search the default registered encoding converters for that encoding.
4540 If it's not within the default set and iconv() support has been compiled
4541 it, it will ask iconv for such an encoder. If this fails then the parser
4542 will report an error and stops processing:
4543 <pre>~/XML -> ./xmllint err2.xml
4544 err2.xml:1: error: Unsupported encoding UnsupportedEnc
4545 <?xml version="1.0" encoding="UnsupportedEnc"?>
4548 <li>From that point the encoder processes progressively the input (it is
4549 plugged as a front-end to the I/O module) for that entity. It captures
4550 and converts on-the-fly the document to be parsed to UTF-8. The parser
4551 itself just does UTF-8 checking of this input and process it
4552 transparently. The only difference is that the encoding information has
4553 been added to the parsing context (more precisely to the input
4554 corresponding to this entity).</li>
4555 <li>The result (when using DOM) is an internal form completely in UTF-8
4556 with just an encoding information on the document node.</li>
4559 <p>Ok then what happens when saving the document (assuming you
4560 collected/built an xmlDoc DOM like structure) ? It depends on the function
4561 called, xmlSaveFile() will just try to save in the original encoding, while
4562 xmlSaveFileTo() and xmlSaveFileEnc() can optionally save to a given
4565 <li>if no encoding is given, libxml2 will look for an encoding value
4566 associated to the document and if it exists will try to save to that
4568 <p>otherwise everything is written in the internal form, i.e. UTF-8</p>
4570 <li>so if an encoding was specified, either at the API level or on the
4571 document, libxml2 will again canonicalize the encoding name, lookup for a
4572 converter in the registered set or through iconv. If not found the
4573 function will return an error code</li>
4574 <li>the converter is placed before the I/O buffer layer, as another kind of
4575 buffer, then libxml2 will simply push the UTF-8 serialization to through
4576 that buffer, which will then progressively be converted and pushed onto
4578 <li>It is possible that the converter code fails on some input, for example
4579 trying to push an UTF-8 encoded Chinese character through the UTF-8 to
4580 ISO-8859-1 converter won't work. Since the encoders are progressive they
4581 will just report the error and the number of bytes converted, at that
4582 point libxml2 will decode the offending character, remove it from the
4583 buffer and replace it with the associated charRef encoding &#123; and
4584 resume the conversion. This guarantees that any document will be saved
4585 without losses (except for markup names where this is not legal, this is
4586 a problem in the current version, in practice avoid using non-ascii
4587 characters for tag or attribute names). A special "ascii" encoding name
4588 is used to save documents to a pure ascii form can be used when
4589 portability is really crucial</li>
4592 <p>Here are a few examples based on the same test document and assumin a
4593 terminal using ISO-8859-1 as the text encoding:</p>
4594 <pre>~/XML -> ./xmllint isolat1
4595 <?xml version="1.0" encoding="ISO-8859-1"?>
4596 <très>là</très>
4597 ~/XML -> ./xmllint --encode UTF-8 isolat1
4598 <?xml version="1.0" encoding="UTF-8"?>
4599 <très>là </très>
4602 <p>The same processing is applied (and reuse most of the code) for HTML I18N
4603 processing. Looking up and modifying the content encoding is a bit more
4604 difficult since it is located in a <meta> tag under the <head>,
4605 so a couple of functions htmlGetMetaEncoding() and htmlSetMetaEncoding() have
4606 been provided. The parser also attempts to switch encoding on the fly when
4607 detecting such a tag on input. Except for that the processing is the same
4608 (and again reuses the same code).</p>
4610 <h3><a name="Default">Default supported encodings</a></h3>
4612 <p>libxml2 has a set of default converters for the following encodings
4613 (located in encoding.c):</p>
4615 <li>UTF-8 is supported by default (null handlers)</li>
4616 <li>UTF-16, both little and big endian</li>
4617 <li>ISO-Latin-1 (ISO-8859-1) covering most western languages</li>
4618 <li>ASCII, useful mostly for saving</li>
4619 <li>HTML, a specific handler for the conversion of UTF-8 to ASCII with HTML
4620 predefined entities like &copy; for the Copyright sign.</li>
4623 <p>More over when compiled on an Unix platform with iconv support the full
4624 set of encodings supported by iconv can be instantly be used by libxml. On a
4625 linux machine with glibc-2.1 the list of supported encodings and aliases fill
4626 3 full pages, and include UCS-4, the full set of ISO-Latin encodings, and the
4627 various Japanese ones.</p>
4629 <p>To convert from the UTF-8 values returned from the API to another encoding
4630 then it is possible to use the function provided from <a
4631 href="html/libxml-encoding.html">the encoding module</a> like <a
4632 href="html/libxml-encoding.html#UTF8Toisolat1">UTF8Toisolat1</a>, or use the
4634 href="http://www.opengroup.org/onlinepubs/009695399/functions/iconv.html">iconv()</a>
4637 <h4>Encoding aliases</h4>
4639 <p>From 2.2.3, libxml2 has support to register encoding names aliases. The
4640 goal is to be able to parse document whose encoding is supported but where
4641 the name differs (for example from the default set of names accepted by
4642 iconv). The following functions allow to register and handle new aliases for
4643 existing encodings. Once registered libxml2 will automatically lookup the
4644 aliases when handling a document:</p>
4646 <li>int xmlAddEncodingAlias(const char *name, const char *alias);</li>
4647 <li>int xmlDelEncodingAlias(const char *alias);</li>
4648 <li>const char * xmlGetEncodingAlias(const char *alias);</li>
4649 <li>void xmlCleanupEncodingAliases(void);</li>
4652 <h3><a name="extend">How to extend the existing support</a></h3>
4654 <p>Well adding support for new encoding, or overriding one of the encoders
4655 (assuming it is buggy) should not be hard, just write input and output
4656 conversion routines to/from UTF-8, and register them using
4657 xmlNewCharEncodingHandler(name, xxxToUTF8, UTF8Toxxx), and they will be
4658 called automatically if the parser(s) encounter such an encoding name
4659 (register it uppercase, this will help). The description of the encoders,
4660 their arguments and expected return values are described in the encoding.h
4663 <h2><a name="IO">I/O Interfaces</a></h2>
4665 <p>Table of Content:</p>
4667 <li><a href="#General1">General overview</a></li>
4668 <li><a href="#basic">The basic buffer type</a></li>
4669 <li><a href="#Input">Input I/O handlers</a></li>
4670 <li><a href="#Output">Output I/O handlers</a></li>
4671 <li><a href="#entities">The entities loader</a></li>
4672 <li><a href="#Example2">Example of customized I/O</a></li>
4675 <h3><a name="General1">General overview</a></h3>
4677 <p>The module <code><a
4678 href="http://xmlsoft.org/html/libxml-xmlio.html">xmlIO.h</a></code> provides
4679 the interfaces to the libxml2 I/O system. This consists of 4 main parts:</p>
4681 <li>Entities loader, this is a routine which tries to fetch the entities
4682 (files) based on their PUBLIC and SYSTEM identifiers. The default loader
4683 don't look at the public identifier since libxml2 do not maintain a
4684 catalog. You can redefine you own entity loader by using
4685 <code>xmlGetExternalEntityLoader()</code> and
4686 <code>xmlSetExternalEntityLoader()</code>. <a href="#entities">Check the
4688 <li>Input I/O buffers which are a commodity structure used by the parser(s)
4689 input layer to handle fetching the information to feed the parser. This
4690 provides buffering and is also a placeholder where the encoding
4691 converters to UTF8 are piggy-backed.</li>
4692 <li>Output I/O buffers are similar to the Input ones and fulfill similar
4693 task but when generating a serialization from a tree.</li>
4694 <li>A mechanism to register sets of I/O callbacks and associate them with
4695 specific naming schemes like the protocol part of the URIs.
4696 <p>This affect the default I/O operations and allows to use specific I/O
4697 handlers for certain names.</p>
4701 <p>The general mechanism used when loading http://rpmfind.net/xml.html for
4702 example in the HTML parser is the following:</p>
4704 <li>The default entity loader calls <code>xmlNewInputFromFile()</code> with
4705 the parsing context and the URI string.</li>
4706 <li>the URI string is checked against the existing registered handlers
4707 using their match() callback function, if the HTTP module was compiled
4708 in, it is registered and its match() function will succeeds</li>
4709 <li>the open() function of the handler is called and if successful will
4710 return an I/O Input buffer</li>
4711 <li>the parser will the start reading from this buffer and progressively
4712 fetch information from the resource, calling the read() function of the
4713 handler until the resource is exhausted</li>
4714 <li>if an encoding change is detected it will be installed on the input
4715 buffer, providing buffering and efficient use of the conversion
4717 <li>once the parser has finished, the close() function of the handler is
4718 called once and the Input buffer and associated resources are
4722 <p>The user defined callbacks are checked first to allow overriding of the
4723 default libxml2 I/O routines.</p>
4725 <h3><a name="basic">The basic buffer type</a></h3>
4727 <p>All the buffer manipulation handling is done using the
4728 <code>xmlBuffer</code> type define in <code><a
4729 href="http://xmlsoft.org/html/libxml-tree.html">tree.h</a> </code>which is a
4730 resizable memory buffer. The buffer allocation strategy can be selected to be
4731 either best-fit or use an exponential doubling one (CPU vs. memory use
4732 trade-off). The values are <code>XML_BUFFER_ALLOC_EXACT</code> and
4733 <code>XML_BUFFER_ALLOC_DOUBLEIT</code>, and can be set individually or on a
4734 system wide basis using <code>xmlBufferSetAllocationScheme()</code>. A number
4735 of functions allows to manipulate buffers with names starting with the
4736 <code>xmlBuffer...</code> prefix.</p>
4738 <h3><a name="Input">Input I/O handlers</a></h3>
4740 <p>An Input I/O handler is a simple structure
4741 <code>xmlParserInputBuffer</code> containing a context associated to the
4742 resource (file descriptor, or pointer to a protocol handler), the read() and
4743 close() callbacks to use and an xmlBuffer. And extra xmlBuffer and a charset
4744 encoding handler are also present to support charset conversion when
4747 <h3><a name="Output">Output I/O handlers</a></h3>
4749 <p>An Output handler <code>xmlOutputBuffer</code> is completely similar to an
4750 Input one except the callbacks are write() and close().</p>
4752 <h3><a name="entities">The entities loader</a></h3>
4754 <p>The entity loader resolves requests for new entities and create inputs for
4755 the parser. Creating an input from a filename or an URI string is done
4756 through the xmlNewInputFromFile() routine. The default entity loader do not
4757 handle the PUBLIC identifier associated with an entity (if any). So it just
4758 calls xmlNewInputFromFile() with the SYSTEM identifier (which is mandatory in
4761 <p>If you want to hook up a catalog mechanism then you simply need to
4762 override the default entity loader, here is an example:</p>
4763 <pre>#include <libxml/xmlIO.h>
4765 xmlExternalEntityLoader defaultLoader = NULL;
4768 xmlMyExternalEntityLoader(const char *URL, const char *ID,
4769 xmlParserCtxtPtr ctxt) {
4770 xmlParserInputPtr ret;
4771 const char *fileID = NULL;
4772 /* lookup for the fileID depending on ID */
4774 ret = xmlNewInputFromFile(ctxt, fileID);
4777 if (defaultLoader != NULL)
4778 ret = defaultLoader(URL, ID, ctxt);
4786 * Install our own entity loader
4788 defaultLoader = xmlGetExternalEntityLoader();
4789 xmlSetExternalEntityLoader(xmlMyExternalEntityLoader);
4794 <h3><a name="Example2">Example of customized I/O</a></h3>
4796 <p>This example come from <a href="http://xmlsoft.org/messages/0708.html">a
4797 real use case</a>, xmlDocDump() closes the FILE * passed by the application
4798 and this was a problem. The <a
4799 href="http://xmlsoft.org/messages/0711.html">solution</a> was to redefine a
4800 new output handler with the closing call deactivated:</p>
4802 <li>First define a new I/O output allocator where the output don't close
4804 <pre>xmlOutputBufferPtr
4805 xmlOutputBufferCreateOwn(FILE *file, xmlCharEncodingHandlerPtr encoder) {
4806 xmlOutputBufferPtr ret;
4807
4808 if (xmlOutputCallbackInitialized == 0)
4809 xmlRegisterDefaultOutputCallbacks();
4811 if (file == NULL) return(NULL);
4812 ret = xmlAllocOutputBuffer(encoder);
4813 if (ret != NULL) {
4814 ret->context = file;
4815 ret->writecallback = xmlFileWrite;
4816 ret->closecallback = NULL; /* No close callback */
4817 }
4818 return(ret);
4821 <li>And then use it to save the document:
4823 xmlOutputBufferPtr output;
4830 output = xmlOutputBufferCreateOwn(f, NULL);
4831 res = xmlSaveFileTo(output, doc, NULL);
4836 <h2><a name="Catalog">Catalog support</a></h2>
4838 <p>Table of Content:</p>
4840 <li><a href="General2">General overview</a></li>
4841 <li><a href="#definition">The definition</a></li>
4842 <li><a href="#Simple">Using catalogs</a></li>
4843 <li><a href="#Some">Some examples</a></li>
4844 <li><a href="#reference">How to tune catalog usage</a></li>
4845 <li><a href="#validate">How to debug catalog processing</a></li>
4846 <li><a href="#Declaring">How to create and maintain catalogs</a></li>
4847 <li><a href="#implemento">The implementor corner quick review of the
4849 <li><a href="#Other">Other resources</a></li>
4852 <h3><a name="General2">General overview</a></h3>
4854 <p>What is a catalog? Basically it's a lookup mechanism used when an entity
4855 (a file or a remote resource) references another entity. The catalog lookup
4856 is inserted between the moment the reference is recognized by the software
4857 (XML parser, stylesheet processing, or even images referenced for inclusion
4858 in a rendering) and the time where loading that resource is actually
4861 <p>It is basically used for 3 things:</p>
4863 <li>mapping from "logical" names, the public identifiers and a more
4864 concrete name usable for download (and URI). For example it can associate
4866 <p>"-//OASIS//DTD DocBook XML V4.1.2//EN"</p>
4867 <p>of the DocBook 4.1.2 XML DTD with the actual URL where it can be
4869 <p>http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd</p>
4871 <li>remapping from a given URL to another one, like an HTTP indirection
4873 <p>"http://www.oasis-open.org/committes/tr.xsl"</p>
4874 <p>should really be looked at</p>
4875 <p>"http://www.oasis-open.org/committes/entity/stylesheets/base/tr.xsl"</p>
4877 <li>providing a local cache mechanism allowing to load the entities
4878 associated to public identifiers or remote resources, this is a really
4879 important feature for any significant deployment of XML or SGML since it
4880 allows to avoid the aleas and delays associated to fetching remote
4884 <h3><a name="definition">The definitions</a></h3>
4886 <p>Libxml, as of 2.4.3 implements 2 kind of catalogs:</p>
4888 <li>the older SGML catalogs, the official spec is SGML Open Technical
4889 Resolution TR9401:1997, but is better understood by reading <a
4890 href="http://www.jclark.com/sp/catalog.htm">the SP Catalog page</a> from
4891 James Clark. This is relatively old and not the preferred mode of
4892 operation of libxml.</li>
4893 <li><a href="http://www.oasis-open.org/committees/entity/spec.html">XML
4894 Catalogs</a> is far more flexible, more recent, uses an XML syntax and
4895 should scale quite better. This is the default option of libxml.</li>
4900 <h3><a name="Simple">Using catalog</a></h3>
4902 <p>In a normal environment libxml2 will by default check the presence of a
4903 catalog in /etc/xml/catalog, and assuming it has been correctly populated,
4904 the processing is completely transparent to the document user. To take a
4905 concrete example, suppose you are authoring a DocBook document, this one
4906 starts with the following DOCTYPE definition:</p>
4907 <pre><?xml version='1.0'?>
4908 <!DOCTYPE book PUBLIC "-//Norman Walsh//DTD DocBk XML V3.1.4//EN"
4909 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd"></pre>
4911 <p>When validating the document with libxml, the catalog will be
4912 automatically consulted to lookup the public identifier "-//Norman Walsh//DTD
4913 DocBk XML V3.1.4//EN" and the system identifier
4914 "http://nwalsh.com/docbook/xml/3.1.4/db3xml.dtd", and if these entities have
4915 been installed on your system and the catalogs actually point to them, libxml
4916 will fetch them from the local disk.</p>
4918 <p style="font-size: 10pt"><strong>Note</strong>: Really don't use this
4919 DOCTYPE example it's a really old version, but is fine as an example.</p>
4921 <p>Libxml2 will check the catalog each time that it is requested to load an
4922 entity, this includes DTD, external parsed entities, stylesheets, etc ... If
4923 your system is correctly configured all the authoring phase and processing
4924 should use only local files, even if your document stays portable because it
4925 uses the canonical public and system ID, referencing the remote document.</p>
4927 <h3><a name="Some">Some examples:</a></h3>
4929 <p>Here is a couple of fragments from XML Catalogs used in libxml2 early
4930 regression tests in <code>test/catalogs</code> :</p>
4931 <pre><?xml version="1.0"?>
4932 <!DOCTYPE catalog PUBLIC
4933 "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
4934 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
4935 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
4936 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN"
4937 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/>
4940 <p>This is the beginning of a catalog for DocBook 4.1.2, XML Catalogs are
4941 written in XML, there is a specific namespace for catalog elements
4942 "urn:oasis:names:tc:entity:xmlns:xml:catalog". The first entry in this
4943 catalog is a <code>public</code> mapping it allows to associate a Public
4944 Identifier with an URI.</p>
4946 <rewriteSystem systemIdStartString="http://www.oasis-open.org/docbook/"
4947 rewritePrefix="file:///usr/share/xml/docbook/"/>
4950 <p>A <code>rewriteSystem</code> is a very powerful instruction, it says that
4951 any URI starting with a given prefix should be looked at another URI
4952 constructed by replacing the prefix with an new one. In effect this acts like
4953 a cache system for a full area of the Web. In practice it is extremely useful
4954 with a file prefix if you have installed a copy of those resources on your
4957 <delegatePublic publicIdStartString="-//OASIS//DTD XML Catalog //"
4958 catalog="file:///usr/share/xml/docbook.xml"/>
4959 <delegatePublic publicIdStartString="-//OASIS//ENTITIES DocBook XML"
4960 catalog="file:///usr/share/xml/docbook.xml"/>
4961 <delegatePublic publicIdStartString="-//OASIS//DTD DocBook XML"
4962 catalog="file:///usr/share/xml/docbook.xml"/>
4963 <delegateSystem systemIdStartString="http://www.oasis-open.org/docbook/"
4964 catalog="file:///usr/share/xml/docbook.xml"/>
4965 <delegateURI uriStartString="http://www.oasis-open.org/docbook/"
4966 catalog="file:///usr/share/xml/docbook.xml"/>
4969 <p>Delegation is the core features which allows to build a tree of catalogs,
4970 easier to maintain than a single catalog, based on Public Identifier, System
4971 Identifier or URI prefixes it instructs the catalog software to look up
4972 entries in another resource. This feature allow to build hierarchies of
4973 catalogs, the set of entries presented should be sufficient to redirect the
4974 resolution of all DocBook references to the specific catalog in
4975 <code>/usr/share/xml/docbook.xml</code> this one in turn could delegate all
4976 references for DocBook 4.2.1 to a specific catalog installed at the same time
4977 as the DocBook resources on the local machine.</p>
4979 <h3><a name="reference">How to tune catalog usage:</a></h3>
4981 <p>The user can change the default catalog behaviour by redirecting queries
4982 to its own set of catalogs, this can be done by setting the
4983 <code>XML_CATALOG_FILES</code> environment variable to a list of catalogs, an
4984 empty one should deactivate loading the default <code>/etc/xml/catalog</code>
4987 <h3><a name="validate">How to debug catalog processing:</a></h3>
4989 <p>Setting up the <code>XML_DEBUG_CATALOG</code> environment variable will
4990 make libxml2 output debugging information for each catalog operations, for
4992 <pre>orchis:~/XML -> xmllint --memory --noout test/ent2
4993 warning: failed to load external entity "title.xml"
4994 orchis:~/XML -> export XML_DEBUG_CATALOG=
4995 orchis:~/XML -> xmllint --memory --noout test/ent2
4996 Failed to parse catalog /etc/xml/catalog
4997 Failed to parse catalog /etc/xml/catalog
4998 warning: failed to load external entity "title.xml"
5000 orchis:~/XML -> </pre>
5002 <p>The test/ent2 references an entity, running the parser from memory makes
5003 the base URI unavailable and the the "title.xml" entity cannot be loaded.
5004 Setting up the debug environment variable allows to detect that an attempt is
5005 made to load the <code>/etc/xml/catalog</code> but since it's not present the
5006 resolution fails.</p>
5008 <p>But the most advanced way to debug XML catalog processing is to use the
5009 <strong>xmlcatalog</strong> command shipped with libxml2, it allows to load
5010 catalogs and make resolution queries to see what is going on. This is also
5011 used for the regression tests:</p>
5012 <pre>orchis:~/XML -> ./xmlcatalog test/catalogs/docbook.xml \
5013 "-//OASIS//DTD DocBook XML V4.1.2//EN"
5014 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
5015 orchis:~/XML -> </pre>
5017 <p>For debugging what is going on, adding one -v flags increase the verbosity
5018 level to indicate the processing done (adding a second flag also indicate
5019 what elements are recognized at parsing):</p>
5020 <pre>orchis:~/XML -> ./xmlcatalog -v test/catalogs/docbook.xml \
5021 "-//OASIS//DTD DocBook XML V4.1.2//EN"
5022 Parsing catalog test/catalogs/docbook.xml's content
5023 Found public match -//OASIS//DTD DocBook XML V4.1.2//EN
5024 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
5026 orchis:~/XML -> </pre>
5028 <p>A shell interface is also available to debug and process multiple queries
5029 (and for regression tests):</p>
5030 <pre>orchis:~/XML -> ./xmlcatalog -shell test/catalogs/docbook.xml \
5031 "-//OASIS//DTD DocBook XML V4.1.2//EN"
5034 public PublicID: make a PUBLIC identifier lookup
5035 system SystemID: make a SYSTEM identifier lookup
5036 resolve PublicID SystemID: do a full resolver lookup
5037 add 'type' 'orig' 'replace' : add an entry
5038 del 'values' : remove values
5039 dump: print the current catalog state
5040 debug: increase the verbosity level
5041 quiet: decrease the verbosity level
5042 exit: quit the shell
5043 > public "-//OASIS//DTD DocBook XML V4.1.2//EN"
5044 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd
5046 orchis:~/XML -> </pre>
5048 <p>This should be sufficient for most debugging purpose, this was actually
5049 used heavily to debug the XML Catalog implementation itself.</p>
5051 <h3><a name="Declaring">How to create and maintain</a> catalogs:</h3>
5053 <p>Basically XML Catalogs are XML files, you can either use XML tools to
5054 manage them or use <strong>xmlcatalog</strong> for this. The basic step is
5055 to create a catalog the -create option provide this facility:</p>
5056 <pre>orchis:~/XML -> ./xmlcatalog --create tst.xml
5057 <?xml version="1.0"?>
5058 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
5059 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5060 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/>
5061 orchis:~/XML -> </pre>
5063 <p>By default xmlcatalog does not overwrite the original catalog and save the
5064 result on the standard output, this can be overridden using the -noout
5065 option. The <code>-add</code> command allows to add entries in the
5067 <pre>orchis:~/XML -> ./xmlcatalog --noout --create --add "public" \
5068 "-//OASIS//DTD DocBook XML V4.1.2//EN" \
5069 http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd tst.xml
5070 orchis:~/XML -> cat tst.xml
5071 <?xml version="1.0"?>
5072 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN" \
5073 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5074 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog">
5075 <public publicId="-//OASIS//DTD DocBook XML V4.1.2//EN"
5076 uri="http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"/>
5078 orchis:~/XML -> </pre>
5080 <p>The <code>-add</code> option will always take 3 parameters even if some of
5081 the XML Catalog constructs (like nextCatalog) will have only a single
5082 argument, just pass a third empty string, it will be ignored.</p>
5084 <p>Similarly the <code>-del</code> option remove matching entries from the
5086 <pre>orchis:~/XML -> ./xmlcatalog --del \
5087 "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" tst.xml
5088 <?xml version="1.0"?>
5089 <!DOCTYPE catalog PUBLIC "-//OASIS//DTD Entity Resolution XML Catalog V1.0//EN"
5090 "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd">
5091 <catalog xmlns="urn:oasis:names:tc:entity:xmlns:xml:catalog"/>
5092 orchis:~/XML -> </pre>
5094 <p>The catalog is now empty. Note that the matching of <code>-del</code> is
5095 exact and would have worked in a similar fashion with the Public ID
5098 <p>This is rudimentary but should be sufficient to manage a not too complex
5099 catalog tree of resources.</p>
5101 <h3><a name="implemento">The implementor corner quick review of the
5104 <p>First, and like for every other module of libxml, there is an
5105 automatically generated <a href="html/libxml-catalog.html">API page for
5106 catalog support</a>.</p>
5108 <p>The header for the catalog interfaces should be included as:</p>
5109 <pre>#include <libxml/catalog.h></pre>
5111 <p>The API is voluntarily kept very simple. First it is not obvious that
5112 applications really need access to it since it is the default behaviour of
5113 libxml2 (Note: it is possible to completely override libxml2 default catalog
5114 by using <a href="html/libxml-parser.html">xmlSetExternalEntityLoader</a> to
5115 plug an application specific resolver).</p>
5117 <p>Basically libxml2 support 2 catalog lists:</p>
5119 <li>the default one, global shared by all the application</li>
5120 <li>a per-document catalog, this one is built if the document uses the
5121 <code>oasis-xml-catalog</code> PIs to specify its own catalog list, it is
5122 associated to the parser context and destroyed when the parsing context
5126 <p>the document one will be used first if it exists.</p>
5128 <h4>Initialization routines:</h4>
5130 <p>xmlInitializeCatalog(), xmlLoadCatalog() and xmlLoadCatalogs() should be
5131 used at startup to initialize the catalog, if the catalog should be
5132 initialized with specific values xmlLoadCatalog() or xmlLoadCatalogs()
5133 should be called before xmlInitializeCatalog() which would otherwise do a
5134 default initialization first.</p>
5136 <p>The xmlCatalogAddLocal() call is used by the parser to grow the document
5137 own catalog list if needed.</p>
5139 <h4>Preferences setup:</h4>
5141 <p>The XML Catalog spec requires the possibility to select default
5142 preferences between public and system delegation,
5143 xmlCatalogSetDefaultPrefer() allows this, xmlCatalogSetDefaults() and
5144 xmlCatalogGetDefaults() allow to control if XML Catalogs resolution should
5145 be forbidden, allowed for global catalog, for document catalog or both, the
5146 default is to allow both.</p>
5148 <p>And of course xmlCatalogSetDebug() allows to generate debug messages
5149 (through the xmlGenericError() mechanism).</p>
5151 <h4>Querying routines:</h4>
5153 <p>xmlCatalogResolve(), xmlCatalogResolveSystem(), xmlCatalogResolvePublic()
5154 and xmlCatalogResolveURI() are relatively explicit if you read the XML
5155 Catalog specification they correspond to section 7 algorithms, they should
5156 also work if you have loaded an SGML catalog with a simplified semantic.</p>
5158 <p>xmlCatalogLocalResolve() and xmlCatalogLocalResolveURI() are the same but
5159 operate on the document catalog list</p>
5161 <h4>Cleanup and Miscellaneous:</h4>
5163 <p>xmlCatalogCleanup() free-up the global catalog, xmlCatalogFreeLocal() is
5164 the per-document equivalent.</p>
5166 <p>xmlCatalogAdd() and xmlCatalogRemove() are used to dynamically modify the
5167 first catalog in the global list, and xmlCatalogDump() allows to dump a
5168 catalog state, those routines are primarily designed for xmlcatalog, I'm not
5169 sure that exposing more complex interfaces (like navigation ones) would be
5172 <p>The xmlParseCatalogFile() is a function used to load XML Catalog files,
5173 it's similar as xmlParseFile() except it bypass all catalog lookups, it's
5174 provided because this functionality may be useful for client tools.</p>
5176 <h4>threaded environments:</h4>
5178 <p>Since the catalog tree is built progressively, some care has been taken to
5179 try to avoid troubles in multithreaded environments. The code is now thread
5180 safe assuming that the libxml2 library has been compiled with threads
5185 <h3><a name="Other">Other resources</a></h3>
5187 <p>The XML Catalog specification is relatively recent so there isn't much
5188 literature to point at:</p>
5190 <li>You can find a good rant from Norm Walsh about <a
5191 href="http://www.arbortext.com/Think_Tank/XML_Resources/Issue_Three/issue_three.html">the
5192 need for catalogs</a>, it provides a lot of context information even if
5193 I don't agree with everything presented. Norm also wrote a more recent
5195 href="http://wwws.sun.com/software/xml/developers/resolver/article/">XML
5196 entities and URI resolvers</a> describing them.</li>
5197 <li>An <a href="http://home.ccil.org/~cowan/XML/XCatalog.html">old XML
5198 catalog proposal</a> from John Cowan</li>
5199 <li>The <a href="http://www.rddl.org/">Resource Directory Description
5200 Language</a> (RDDL) another catalog system but more oriented toward
5201 providing metadata for XML namespaces.</li>
5202 <li>the page from the OASIS Technical <a
5203 href="http://www.oasis-open.org/committees/entity/">Committee on Entity
5204 Resolution</a> who maintains XML Catalog, you will find pointers to the
5205 specification update, some background and pointers to others tools
5206 providing XML Catalog support</li>
5207 <li>There is a <a href="buildDocBookCatalog">shell script</a> to generate
5208 XML Catalogs for DocBook 4.1.2 . If it can write to the /etc/xml/
5209 directory, it will set-up /etc/xml/catalog and /etc/xml/docbook based on
5210 the resources found on the system. Otherwise it will just create
5211 ~/xmlcatalog and ~/dbkxmlcatalog and doing:
5212 <p><code>export XML_CATALOG_FILES=$HOME/xmlcatalog</code></p>
5213 <p>should allow to process DocBook documentations without requiring
5214 network accesses for the DTD or stylesheets</p>
5216 <li>I have uploaded <a href="ftp://xmlsoft.org/libxml2/test/dbk412catalog.tar.gz">a
5217 small tarball</a> containing XML Catalogs for DocBook 4.1.2 which seems
5218 to work fine for me too</li>
5219 <li>The <a href="http://www.xmlsoft.org/xmlcatalog_man.html">xmlcatalog
5220 manual page</a></li>
5223 <p>If you have suggestions for corrections or additions, simply contact
5226 <h2><a name="library">The parser interfaces</a></h2>
5228 <p>This section is directly intended to help programmers getting bootstrapped
5229 using the XML tollkit from the C language. It is not intended to be
5230 extensive. I hope the automatically generated documents will provide the
5231 completeness required, but as a separate set of documents. The interfaces of
5232 the XML parser are by principle low level, Those interested in a higher level
5233 API should <a href="#DOM">look at DOM</a>.</p>
5235 <p>The <a href="html/libxml-parser.html">parser interfaces for XML</a> are
5236 separated from the <a href="html/libxml-htmlparser.html">HTML parser
5237 interfaces</a>. Let's have a look at how the XML parser can be called:</p>
5239 <h3><a name="Invoking">Invoking the parser : the pull method</a></h3>
5241 <p>Usually, the first thing to do is to read an XML input. The parser accepts
5242 documents either from in-memory strings or from files. The functions are
5243 defined in "parser.h":</p>
5245 <dt><code>xmlDocPtr xmlParseMemory(char *buffer, int size);</code></dt>
5246 <dd><p>Parse a null-terminated string containing the document.</p>
5250 <dt><code>xmlDocPtr xmlParseFile(const char *filename);</code></dt>
5251 <dd><p>Parse an XML document contained in a (possibly compressed)
5256 <p>The parser returns a pointer to the document structure (or NULL in case of
5259 <h3 id="Invoking1">Invoking the parser: the push method</h3>
5261 <p>In order for the application to keep the control when the document is
5262 being fetched (which is common for GUI based programs) libxml2 provides a
5263 push interface, too, as of version 1.8.3. Here are the interface
5265 <pre>xmlParserCtxtPtr xmlCreatePushParserCtxt(xmlSAXHandlerPtr sax,
5269 const char *filename);
5270 int xmlParseChunk (xmlParserCtxtPtr ctxt,
5273 int terminate);</pre>
5275 <p>and here is a simple example showing how to use the interface:</p>
5278 f = fopen(filename, "r");
5280 int res, size = 1024;
5282 xmlParserCtxtPtr ctxt;
5284 res = fread(chars, 1, 4, f);
5286 ctxt = xmlCreatePushParserCtxt(NULL, NULL,
5287 chars, res, filename);
5288 while ((res = fread(chars, 1, size, f)) > 0) {
5289 xmlParseChunk(ctxt, chars, res, 0);
5291 xmlParseChunk(ctxt, chars, 0, 1);
5292 doc = ctxt->myDoc;
5293 xmlFreeParserCtxt(ctxt);
5297 <p>The HTML parser embedded into libxml2 also has a push interface; the
5298 functions are just prefixed by "html" rather than "xml".</p>
5300 <h3 id="Invoking2">Invoking the parser: the SAX interface</h3>
5302 <p>The tree-building interface makes the parser memory-hungry, first loading
5303 the document in memory and then building the tree itself. Reading a document
5304 without building the tree is possible using the SAX interfaces (see SAX.h and
5305 <a href="http://www.daa.com.au/~james/gnome/xml-sax/xml-sax.html">James
5306 Henstridge's documentation</a>). Note also that the push interface can be
5307 limited to SAX: just use the two first arguments of
5308 <code>xmlCreatePushParserCtxt()</code>.</p>
5310 <h3><a name="Building">Building a tree from scratch</a></h3>
5312 <p>The other way to get an XML tree in memory is by building it. Basically
5313 there is a set of functions dedicated to building new elements. (These are
5314 also described in <libxml/tree.h>.) For example, here is a piece of
5315 code that produces the XML document used in the previous examples:</p>
5316 <pre> #include <libxml/tree.h>
5318 xmlNodePtr tree, subtree;
5320 doc = xmlNewDoc("1.0");
5321 doc->children = xmlNewDocNode(doc, NULL, "EXAMPLE", NULL);
5322 xmlSetProp(doc->children, "prop1", "gnome is great");
5323 xmlSetProp(doc->children, "prop2", "& linux too");
5324 tree = xmlNewChild(doc->children, NULL, "head", NULL);
5325 subtree = xmlNewChild(tree, NULL, "title", "Welcome to Gnome");
5326 tree = xmlNewChild(doc->children, NULL, "chapter", NULL);
5327 subtree = xmlNewChild(tree, NULL, "title", "The Linux adventure");
5328 subtree = xmlNewChild(tree, NULL, "p", "bla bla bla ...");
5329 subtree = xmlNewChild(tree, NULL, "image", NULL);
5330 xmlSetProp(subtree, "href", "linus.gif");</pre>
5332 <p>Not really rocket science ...</p>
5334 <h3><a name="Traversing">Traversing the tree</a></h3>
5336 <p>Basically by <a href="html/libxml-tree.html">including "tree.h"</a> your
5337 code has access to the internal structure of all the elements of the tree.
5338 The names should be somewhat simple like <strong>parent</strong>,
5339 <strong>children</strong>, <strong>next</strong>, <strong>prev</strong>,
5340 <strong>properties</strong>, etc... For example, still with the previous
5342 <pre><code>doc->children->children->children</code></pre>
5344 <p>points to the title element,</p>
5345 <pre>doc->children->children->next->children->children</pre>
5347 <p>points to the text node containing the chapter title "The Linux
5350 <p><strong>NOTE</strong>: XML allows <em>PI</em>s and <em>comments</em> to be
5351 present before the document root, so <code>doc->children</code> may point
5352 to an element which is not the document Root Element; a function
5353 <code>xmlDocGetRootElement()</code> was added for this purpose.</p>
5355 <h3><a name="Modifying">Modifying the tree</a></h3>
5357 <p>Functions are provided for reading and writing the document content. Here
5358 is an excerpt from the <a href="html/libxml-tree.html">tree API</a>:</p>
5360 <dt><code>xmlAttrPtr xmlSetProp(xmlNodePtr node, const xmlChar *name, const
5361 xmlChar *value);</code></dt>
5362 <dd><p>This sets (or changes) an attribute carried by an ELEMENT node.
5363 The value can be NULL.</p>
5367 <dt><code>const xmlChar *xmlGetProp(xmlNodePtr node, const xmlChar
5369 <dd><p>This function returns a pointer to new copy of the property
5370 content. Note that the user must deallocate the result.</p>
5374 <p>Two functions are provided for reading and writing the text associated
5377 <dt><code>xmlNodePtr xmlStringGetNodeList(xmlDocPtr doc, const xmlChar
5378 *value);</code></dt>
5379 <dd><p>This function takes an "external" string and converts it to one
5380 text node or possibly to a list of entity and text nodes. All
5381 non-predefined entity references like &Gnome; will be stored
5382 internally as entity nodes, hence the result of the function may not be
5387 <dt><code>xmlChar *xmlNodeListGetString(xmlDocPtr doc, xmlNodePtr list, int
5388 inLine);</code></dt>
5389 <dd><p>This function is the inverse of
5390 <code>xmlStringGetNodeList()</code>. It generates a new string
5391 containing the content of the text and entity nodes. Note the extra
5392 argument inLine. If this argument is set to 1, the function will expand
5393 entity references. For example, instead of returning the &Gnome;
5394 XML encoding in the string, it will substitute it with its value (say,
5395 "GNU Network Object Model Environment").</p>
5399 <h3><a name="Saving">Saving a tree</a></h3>
5401 <p>Basically 3 options are possible:</p>
5403 <dt><code>void xmlDocDumpMemory(xmlDocPtr cur, xmlChar**mem, int
5405 <dd><p>Returns a buffer into which the document has been saved.</p>
5409 <dt><code>extern void xmlDocDump(FILE *f, xmlDocPtr doc);</code></dt>
5410 <dd><p>Dumps a document to an open file descriptor.</p>
5414 <dt><code>int xmlSaveFile(const char *filename, xmlDocPtr cur);</code></dt>
5415 <dd><p>Saves the document to a file. In this case, the compression
5416 interface is triggered if it has been turned on.</p>
5420 <h3><a name="Compressio">Compression</a></h3>
5422 <p>The library transparently handles compression when doing file-based
5423 accesses. The level of compression on saves can be turned on either globally
5424 or individually for one file:</p>
5426 <dt><code>int xmlGetDocCompressMode (xmlDocPtr doc);</code></dt>
5427 <dd><p>Gets the document compression ratio (0-9).</p>
5431 <dt><code>void xmlSetDocCompressMode (xmlDocPtr doc, int mode);</code></dt>
5432 <dd><p>Sets the document compression ratio.</p>
5436 <dt><code>int xmlGetCompressMode(void);</code></dt>
5437 <dd><p>Gets the default compression ratio.</p>
5441 <dt><code>void xmlSetCompressMode(int mode);</code></dt>
5442 <dd><p>Sets the default compression ratio.</p>
5446 <h2><a name="Entities">Entities or no entities</a></h2>
5448 <p>Entities in principle are similar to simple C macros. An entity defines an
5449 abbreviation for a given string that you can reuse many times throughout the
5450 content of your document. Entities are especially useful when a given string
5451 may occur frequently within a document, or to confine the change needed to a
5452 document to a restricted area in the internal subset of the document (at the
5453 beginning). Example:</p>
5454 <pre>1 <?xml version="1.0"?>
5455 2 <!DOCTYPE EXAMPLE SYSTEM "example.dtd" [
5456 3 <!ENTITY xml "Extensible Markup Language">
5460 7 </EXAMPLE></pre>
5462 <p>Line 3 declares the xml entity. Line 6 uses the xml entity, by prefixing
5463 its name with '&' and following it by ';' without any spaces added. There
5464 are 5 predefined entities in libxml2 allowing you to escape characters with
5465 predefined meaning in some parts of the xml document content:
5466 <strong>&lt;</strong> for the character '<', <strong>&gt;</strong>
5467 for the character '>', <strong>&apos;</strong> for the character ''',
5468 <strong>&quot;</strong> for the character '"', and
5469 <strong>&amp;</strong> for the character '&'.</p>
5471 <p>One of the problems related to entities is that you may want the parser to
5472 substitute an entity's content so that you can see the replacement text in
5473 your application. Or you may prefer to keep entity references as such in the
5474 content to be able to save the document back without losing this usually
5475 precious information (if the user went through the pain of explicitly
5476 defining entities, he may have a a rather negative attitude if you blindly
5477 substitute them as saving time). The <a
5478 href="html/libxml-parser.html#xmlSubstituteEntitiesDefault">xmlSubstituteEntitiesDefault()</a>
5479 function allows you to check and change the behaviour, which is to not
5480 substitute entities by default.</p>
5482 <p>Here is the DOM tree built by libxml2 for the previous document in the
5484 <pre>/gnome/src/gnome-xml -> ./xmllint --debug test/ent1
5491 INTERNAL_GENERAL_ENTITY xml
5492 content=Extensible Markup Language
5496 <p>And here is the result when substituting entities:</p>
5497 <pre>/gnome/src/gnome-xml -> ./tester --debug --noent test/ent1
5502 content= Extensible Markup Language</pre>
5504 <p>So, entities or no entities? Basically, it depends on your use case. I
5505 suggest that you keep the non-substituting default behaviour and avoid using
5506 entities in your XML document or data if you are not willing to handle the
5507 entity references elements in the DOM tree.</p>
5509 <p>Note that at save time libxml2 enforces the conversion of the predefined
5510 entities where necessary to prevent well-formedness problems, and will also
5511 transparently replace those with chars (i.e. it will not generate entity
5512 reference elements in the DOM tree or call the reference() SAX callback when
5513 finding them in the input).</p>
5515 <p><span style="background-color: #FF0000">WARNING</span>: handling entities
5516 on top of the libxml2 SAX interface is difficult!!! If you plan to use
5517 non-predefined entities in your documents, then the learning curve to handle
5518 then using the SAX API may be long. If you plan to use complex documents, I
5519 strongly suggest you consider using the DOM interface instead and let libxml
5520 deal with the complexity rather than trying to do it yourself.</p>
5522 <h2><a name="Namespaces">Namespaces</a></h2>
5524 <p>The libxml2 library implements <a
5525 href="http://www.w3.org/TR/REC-xml-names/">XML namespaces</a> support by
5526 recognizing namespace constructs in the input, and does namespace lookup
5527 automatically when building the DOM tree. A namespace declaration is
5528 associated with an in-memory structure and all elements or attributes within
5529 that namespace point to it. Hence testing the namespace is a simple and fast
5530 equality operation at the user level.</p>
5532 <p>I suggest that people using libxml2 use a namespace, and declare it in the
5533 root element of their document as the default namespace. Then they don't need
5534 to use the prefix in the content but we will have a basis for future semantic
5535 refinement and merging of data from different sources. This doesn't increase
5536 the size of the XML output significantly, but significantly increases its
5537 value in the long-term. Example:</p>
5538 <pre><mydoc xmlns="http://mydoc.example.org/schemas/">
5539 <elem1>...</elem1>
5540 <elem2>...</elem2>
5541 </mydoc></pre>
5543 <p>The namespace value has to be an absolute URL, but the URL doesn't have to
5544 point to any existing resource on the Web. It will bind all the element and
5545 attributes with that URL. I suggest to use an URL within a domain you
5546 control, and that the URL should contain some kind of version information if
5547 possible. For example, <code>"http://www.gnome.org/gnumeric/1.0/"</code> is a
5548 good namespace scheme.</p>
5550 <p>Then when you load a file, make sure that a namespace carrying the
5551 version-independent prefix is installed on the root element of your document,
5552 and if the version information don't match something you know, warn the user
5553 and be liberal in what you accept as the input. Also do *not* try to base
5554 namespace checking on the prefix value. <foo:text> may be exactly the
5555 same as <bar:text> in another document. What really matters is the URI
5556 associated with the element or the attribute, not the prefix string (which is
5557 just a shortcut for the full URI). In libxml, element and attributes have an
5558 <code>ns</code> field pointing to an xmlNs structure detailing the namespace
5559 prefix and its URI.</p>
5561 <p>@@Interfaces@@</p>
5562 <pre>xmlNodePtr node;
5563 if(!strncmp(node->name,"mytag",5)
5564 && node->ns
5565 && !strcmp(node->ns->href,"http://www.mysite.com/myns/1.0")) {
5569 <p>Usually people object to using namespaces together with validity checking.
5570 I will try to make sure that using namespaces won't break validity checking,
5571 so even if you plan to use or currently are using validation I strongly
5572 suggest adding namespaces to your document. A default namespace scheme
5573 <code>xmlns="http://...."</code> should not break validity even on less
5574 flexible parsers. Using namespaces to mix and differentiate content coming
5575 from multiple DTDs will certainly break current validation schemes. To check
5576 such documents one needs to use schema-validation, which is supported in
5577 libxml2 as well. See <a href="http://www.relaxng.org/">relagx-ng</a> and <a
5578 href="http://www.w3c.org/XML/Schema">w3c-schema</a>.</p>
5580 <h2><a name="Upgrading">Upgrading 1.x code</a></h2>
5582 <p>Incompatible changes:</p>
5584 <p>Version 2 of libxml2 is the first version introducing serious backward
5585 incompatible changes. The main goals were:</p>
5587 <li>a general cleanup. A number of mistakes inherited from the very early
5588 versions couldn't be changed due to compatibility constraints. Example
5589 the "childs" element in the nodes.</li>
5590 <li>Uniformization of the various nodes, at least for their header and link
5591 parts (doc, parent, children, prev, next), the goal is a simpler
5592 programming model and simplifying the task of the DOM implementors.</li>
5593 <li>better conformances to the XML specification, for example version 1.x
5594 had an heuristic to try to detect ignorable white spaces. As a result the
5595 SAX event generated were ignorableWhitespace() while the spec requires
5596 character() in that case. This also mean that a number of DOM node
5597 containing blank text may populate the DOM tree which were not present
5601 <h3>How to fix libxml-1.x code:</h3>
5603 <p>So client code of libxml designed to run with version 1.x may have to be
5604 changed to compile against version 2.x of libxml. Here is a list of changes
5605 that I have collected, they may not be sufficient, so in case you find other
5606 change which are required, <a href="mailto:Daniel.Veillard@w3.org">drop me a
5609 <li>The package name have changed from libxml to libxml2, the library name
5610 is now -lxml2 . There is a new xml2-config script which should be used to
5611 select the right parameters libxml2</li>
5612 <li>Node <strong>childs</strong> field has been renamed
5613 <strong>children</strong> so s/childs/children/g should be applied
5614 (probability of having "childs" anywhere else is close to 0+</li>
5615 <li>The document don't have anymore a <strong>root</strong> element it has
5616 been replaced by <strong>children</strong> and usually you will get a
5617 list of element here. For example a Dtd element for the internal subset
5618 and it's declaration may be found in that list, as well as processing
5619 instructions or comments found before or after the document root element.
5620 Use <strong>xmlDocGetRootElement(doc)</strong> to get the root element of
5621 a document. Alternatively if you are sure to not reference DTDs nor have
5622 PIs or comments before or after the root element
5623 s/->root/->children/g will probably do it.</li>
5624 <li>The white space issue, this one is more complex, unless special case of
5625 validating parsing, the line breaks and spaces usually used for indenting
5626 and formatting the document content becomes significant. So they are
5627 reported by SAX and if your using the DOM tree, corresponding nodes are
5628 generated. Too approach can be taken:
5630 <li>lazy one, use the compatibility call
5631 <strong>xmlKeepBlanksDefault(0)</strong> but be aware that you are
5632 relying on a special (and possibly broken) set of heuristics of
5633 libxml to detect ignorable blanks. Don't complain if it breaks or
5634 make your application not 100% clean w.r.t. to it's input.</li>
5635 <li>the Right Way: change you code to accept possibly insignificant
5636 blanks characters, or have your tree populated with weird blank text
5637 nodes. You can spot them using the commodity function
5638 <strong>xmlIsBlankNode(node)</strong> returning 1 for such blank
5641 <p>Note also that with the new default the output functions don't add any
5642 extra indentation when saving a tree in order to be able to round trip
5643 (read and save) without inflating the document with extra formatting
5646 <li>The include path has changed to $prefix/libxml/ and the includes
5647 themselves uses this new prefix in includes instructions... If you are
5648 using (as expected) the
5649 <pre>xml2-config --cflags</pre>
5650 <p>output to generate you compile commands this will probably work out of
5653 <li>xmlDetectCharEncoding takes an extra argument indicating the length in
5654 byte of the head of the document available for character detection.</li>
5657 <h3>Ensuring both libxml-1.x and libxml-2.x compatibility</h3>
5659 <p>Two new version of libxml (1.8.11) and libxml2 (2.3.4) have been released
5660 to allow smooth upgrade of existing libxml v1code while retaining
5661 compatibility. They offers the following:</p>
5663 <li>similar include naming, one should use
5664 <strong>#include<libxml/...></strong> in both cases.</li>
5665 <li>similar identifiers defined via macros for the child and root fields:
5666 respectively <strong>xmlChildrenNode</strong> and
5667 <strong>xmlRootNode</strong></li>
5668 <li>a new macro <strong>LIBXML_TEST_VERSION</strong> which should be
5669 inserted once in the client code</li>
5672 <p>So the roadmap to upgrade your existing libxml applications is the
5675 <li>install the libxml-1.8.8 (and libxml-devel-1.8.8) packages</li>
5676 <li>find all occurrences where the xmlDoc <strong>root</strong> field is
5677 used and change it to <strong>xmlRootNode</strong></li>
5678 <li>similarly find all occurrences where the xmlNode
5679 <strong>childs</strong> field is used and change it to
5680 <strong>xmlChildrenNode</strong></li>
5681 <li>add a <strong>LIBXML_TEST_VERSION</strong> macro somewhere in your
5682 <strong>main()</strong> or in the library init entry point</li>
5683 <li>Recompile, check compatibility, it should still work</li>
5684 <li>Change your configure script to look first for xml2-config and fall
5685 back using xml-config . Use the --cflags and --libs output of the command
5686 as the Include and Linking parameters needed to use libxml.</li>
5687 <li>install libxml2-2.3.x and libxml2-devel-2.3.x (libxml-1.8.y and
5688 libxml-devel-1.8.y can be kept simultaneously)</li>
5689 <li>remove your config.cache, relaunch your configuration mechanism, and
5690 recompile, if steps 2 and 3 were done right it should compile as-is</li>
5691 <li>Test that your application is still running correctly, if not this may
5692 be due to extra empty nodes due to formating spaces being kept in libxml2
5693 contrary to libxml1, in that case insert xmlKeepBlanksDefault(1) in your
5694 code before calling the parser (next to
5695 <strong>LIBXML_TEST_VERSION</strong> is a fine place).</li>
5698 <p>Following those steps should work. It worked for some of my own code.</p>
5700 <p>Let me put some emphasis on the fact that there is far more changes from
5701 libxml 1.x to 2.x than the ones you may have to patch for. The overall code
5702 has been considerably cleaned up and the conformance to the XML specification
5703 has been drastically improved too. Don't take those changes as an excuse to
5704 not upgrade, it may cost a lot on the long term ...</p>
5706 <h2><a name="Thread">Thread safety</a></h2>
5708 <p>Starting with 2.4.7, libxml2 makes provisions to ensure that concurrent
5709 threads can safely work in parallel parsing different documents. There is
5710 however a couple of things to do to ensure it:</p>
5712 <li>configure the library accordingly using the --with-threads options</li>
5713 <li>call xmlInitParser() in the "main" thread before using any of the
5714 libxml2 API (except possibly selecting a different memory allocator)</li>
5717 <p>Note that the thread safety cannot be ensured for multiple threads sharing
5718 the same document, the locking must be done at the application level, libxml
5719 exports a basic mutex and reentrant mutexes API in <libxml/threads.h>.
5720 The parts of the library checked for thread safety are:</p>
5722 <li>concurrent loading</li>
5723 <li>file access resolution</li>
5724 <li>catalog access</li>
5725 <li>catalog building</li>
5726 <li>entities lookup/accesses</li>
5728 <li>global variables per-thread override</li>
5729 <li>memory handling</li>
5732 <p>XPath has been tested for threaded usage on non-modified document
5733 for example when using libxslt, but make 100% sure the documents
5734 are accessed read-only !</p>
5736 <h2><a name="DOM"></a><a name="Principles">DOM Principles</a></h2>
5738 <p><a href="http://www.w3.org/DOM/">DOM</a> stands for the <em>Document
5739 Object Model</em>; this is an API for accessing XML or HTML structured
5740 documents. Native support for DOM in Gnome is on the way (module gnome-dom),
5741 and will be based on gnome-xml. This will be a far cleaner interface to
5742 manipulate XML files within Gnome since it won't expose the internal
5745 <p>The current DOM implementation on top of libxml2 is the <a
5746 href="http://svn.gnome.org/viewvc/gdome2/trunk/">gdome2 Gnome module</a>, this
5747 is a full DOM interface, thanks to Paolo Casarini, check the <a
5748 href="http://gdome2.cs.unibo.it/">Gdome2 homepage</a> for more
5751 <h2><a name="Example"></a><a name="real">A real example</a></h2>
5753 <p>Here is a real size example, where the actual content of the application
5754 data is not kept in the DOM tree but uses internal structures. It is based on
5755 a proposal to keep a database of jobs related to Gnome, with an XML based
5756 storage structure. Here is an <a href="gjobs.xml">XML encoded jobs
5758 <pre><?xml version="1.0"?>
5759 <gjob:Helping xmlns:gjob="http://www.gnome.org/some-location">
5763 <gjob:Project ID="3"/>
5764 <gjob:Application>GBackup</gjob:Application>
5765 <gjob:Category>Development</gjob:Category>
5768 <gjob:Status>Open</gjob:Status>
5769 <gjob:Modified>Mon, 07 Jun 1999 20:27:45 -0400 MET DST</gjob:Modified>
5770 <gjob:Salary>USD 0.00</gjob:Salary>
5771 </gjob:Update>
5773 <gjob:Developers>
5774 <gjob:Developer>
5775 </gjob:Developer>
5776 </gjob:Developers>
5778 <gjob:Contact>
5779 <gjob:Person>Nathan Clemons</gjob:Person>
5780 <gjob:Email>nathan@windsofstorm.net</gjob:Email>
5781 <gjob:Company>
5782 </gjob:Company>
5783 <gjob:Organisation>
5784 </gjob:Organisation>
5785 <gjob:Webpage>
5786 </gjob:Webpage>
5787 <gjob:Snailmail>
5788 </gjob:Snailmail>
5791 </gjob:Contact>
5793 <gjob:Requirements>
5794 The program should be released as free software, under the GPL.
5795 </gjob:Requirements>
5798 </gjob:Skills>
5800 <gjob:Details>
5801 A GNOME based system that will allow a superuser to configure
5802 compressed and uncompressed files and/or file systems to be backed
5803 up with a supported media in the system. This should be able to
5804 perform via find commands generating a list of files that are passed
5805 to tar, dd, cpio, cp, gzip, etc., to be directed to the tape machine
5806 or via operations performed on the filesystem itself. Email
5807 notification and GUI status display very important.
5808 </gjob:Details>
5813 </gjob:Helping></pre>
5815 <p>While loading the XML file into an internal DOM tree is a matter of
5816 calling only a couple of functions, browsing the tree to gather the data and
5817 generate the internal structures is harder, and more error prone.</p>
5819 <p>The suggested principle is to be tolerant with respect to the input
5820 structure. For example, the ordering of the attributes is not significant,
5821 the XML specification is clear about it. It's also usually a good idea not to
5822 depend on the order of the children of a given node, unless it really makes
5823 things harder. Here is some code to parse the information for a person:</p>
5827 typedef struct person {
5835 } person, *personPtr;
5838 * And the code needed to parse it
5840 personPtr parsePerson(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) {
5841 personPtr ret = NULL;
5843 DEBUG("parsePerson\n");
5845 * allocate the struct
5847 ret = (personPtr) malloc(sizeof(person));
5849 fprintf(stderr,"out of memory\n");
5852 memset(ret, 0, sizeof(person));
5854 /* We don't care what the top level element name is */
5855 cur = cur->xmlChildrenNode;
5856 while (cur != NULL) {
5857 if ((!strcmp(cur->name, "Person")) && (cur->ns == ns))
5858 ret->name = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
5859 if ((!strcmp(cur->name, "Email")) && (cur->ns == ns))
5860 ret->email = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
5867 <p>Here are a couple of things to notice:</p>
5869 <li>Usually a recursive parsing style is the more convenient one: XML data
5870 is by nature subject to repetitive constructs and usually exhibits highly
5871 structured patterns.</li>
5872 <li>The two arguments of type <em>xmlDocPtr</em> and <em>xmlNsPtr</em>,
5873 i.e. the pointer to the global XML document and the namespace reserved to
5874 the application. Document wide information are needed for example to
5875 decode entities and it's a good coding practice to define a namespace for
5876 your application set of data and test that the element and attributes
5877 you're analyzing actually pertains to your application space. This is
5878 done by a simple equality test (cur->ns == ns).</li>
5879 <li>To retrieve text and attributes value, you can use the function
5880 <em>xmlNodeListGetString</em> to gather all the text and entity reference
5881 nodes generated by the DOM output and produce an single text string.</li>
5884 <p>Here is another piece of code used to parse another level of the
5886 <pre>#include <libxml/tree.h>
5888 * a Description for a Job
5890 typedef struct job {
5896 personPtr developers[100]; /* using dynamic alloc is left as an exercise */
5900 * And the code needed to parse it
5902 jobPtr parseJob(xmlDocPtr doc, xmlNsPtr ns, xmlNodePtr cur) {
5905 DEBUG("parseJob\n");
5907 * allocate the struct
5909 ret = (jobPtr) malloc(sizeof(job));
5911 fprintf(stderr,"out of memory\n");
5914 memset(ret, 0, sizeof(job));
5916 /* We don't care what the top level element name is */
5917 cur = cur->xmlChildrenNode;
5918 while (cur != NULL) {
5920 if ((!strcmp(cur->name, "Project")) && (cur->ns == ns)) {
5921 ret->projectID = xmlGetProp(cur, "ID");
5922 if (ret->projectID == NULL) {
5923 fprintf(stderr, "Project has no ID\n");
5926 if ((!strcmp(cur->name, "Application")) && (cur->ns == ns))
5927 ret->application = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
5928 if ((!strcmp(cur->name, "Category")) && (cur->ns == ns))
5929 ret->category = xmlNodeListGetString(doc, cur->xmlChildrenNode, 1);
5930 if ((!strcmp(cur->name, "Contact")) && (cur->ns == ns))
5931 ret->contact = parsePerson(doc, ns, cur);
5938 <p>Once you are used to it, writing this kind of code is quite simple, but
5939 boring. Ultimately, it could be possible to write stubbers taking either C
5940 data structure definitions, a set of XML examples or an XML DTD and produce
5941 the code needed to import and export the content between C data and XML
5942 storage. This is left as an exercise to the reader :-)</p>
5944 <p>Feel free to use <a href="example/gjobread.c">the code for the full C
5945 parsing example</a> as a template, it is also available with Makefile in the
5946 Gnome SVN base under libxml2/example</p>
5948 <h2><a name="Contributi">Contributions</a></h2>
5950 <li>Bjorn Reese, William Brack and Thomas Broyer have provided a number of
5951 patches, Gary Pennington worked on the validation API, threading support
5952 and Solaris port.</li>
5953 <li>John Fleck helps maintaining the documentation and man pages.</li>
5954 <li><a href="mailto:igor@zlatkovic.com">Igor Zlatkovic</a> is now the
5955 maintainer of the Windows port, <a
5956 href="http://www.zlatkovic.com/projects/libxml/index.html">he provides
5958 <li><a href="mailto:Gary.Pennington@sun.com">Gary Pennington</a> provides
5959 <a href="http://garypennington.net/libxml2/">Solaris binaries</a></li>
5961 href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">Matt
5962 Sergeant</a> developed <a
5963 href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl wrapper for
5964 libxml2/libxslt as part of the <a href="http://axkit.com/">AxKit XML
5965 application server</a></li>
5966 <li><a href="mailto:fnatter@gmx.net">Felix Natter</a> and <a
5967 href="mailto:geertk@ai.rug.nl">Geert Kloosterman</a> provide <a
5968 href="libxml-doc.el">an emacs module</a> to lookup libxml(2) functions
5970 <li><a href="mailto:sherwin@nlm.nih.gov">Ziying Sherwin</a> provided <a
5971 href="http://xmlsoft.org/messages/0488.html">man pages</a></li>
5972 <li>there is a module for <a
5973 href="http://acs-misc.sourceforge.net/nsxml.html">libxml/libxslt support
5974 in OpenNSD/AOLServer</a></li>
5975 <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a> provided the
5976 first version of libxml/libxslt <a
5977 href="http://www.rexx.com/~dkuhlman">wrappers for Python</a></li>
5978 <li>Petr Kozelka provides <a
5979 href="http://sourceforge.net/projects/libxml2-pas">Pascal units to glue
5980 libxml2</a> with Kylix and Delphi and other Pascal compilers</li>
5981 <li><a href="mailto:aleksey@aleksey.com">Aleksey Sanin</a> implemented the
5982 <a href="http://www.w3.org/Signature/">XML Canonicalization and XML
5983 Digital Signature</a> <a
5984 href="http://www.aleksey.com/xmlsec/">implementations for libxml2</a></li>
5985 <li><a href="mailto:Steve.Ball@explain.com.au">Steve Ball</a> and
5986 contributors maintain <a href="http://tclxml.sourceforge.net/">tcl
5987 bindings for libxml2 and libxslt</a>, as well as <a
5988 href="http://tclxml.sf.net/tkxmllint.html">tkxmllint</a> a GUI for
5989 xmllint and <a href="http://tclxml.sf.net/tkxsltproc.html">tkxsltproc</a>
5990 a GUI for xsltproc.</li>