1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: Alexander Larsson <alexl@redhat.com>
25 #include <sys/types.h>
35 #include "gdummyfile.h"
40 static void g_dummy_file_file_iface_init (GFileIface *iface);
46 int port; /* -1 => not in uri */
54 GObject parent_instance;
56 GDecodedUri *decoded_uri;
60 #define g_dummy_file_get_type _g_dummy_file_get_type
61 G_DEFINE_TYPE_WITH_CODE (GDummyFile, g_dummy_file, G_TYPE_OBJECT,
62 G_IMPLEMENT_INTERFACE (G_TYPE_FILE,
63 g_dummy_file_file_iface_init))
65 #define SUB_DELIM_CHARS "!$&'()*+,;="
67 static char * _g_encode_uri (GDecodedUri *decoded);
68 static void _g_decoded_uri_free (GDecodedUri *decoded);
69 static GDecodedUri *_g_decode_uri (const char *uri);
70 static GDecodedUri *_g_decoded_uri_new (void);
72 static char * unescape_string (const gchar *escaped_string,
73 const gchar *escaped_string_end,
74 const gchar *illegal_characters);
76 static void g_string_append_encoded (GString *string,
78 const char *reserved_chars_allowed);
81 g_dummy_file_finalize (GObject *object)
85 dummy = G_DUMMY_FILE (object);
87 if (dummy->decoded_uri)
88 _g_decoded_uri_free (dummy->decoded_uri);
90 g_free (dummy->text_uri);
92 G_OBJECT_CLASS (g_dummy_file_parent_class)->finalize (object);
96 g_dummy_file_class_init (GDummyFileClass *klass)
98 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
100 gobject_class->finalize = g_dummy_file_finalize;
104 g_dummy_file_init (GDummyFile *dummy)
110 * @uri: Universal Resource Identifier for the dummy file object.
112 * Returns: a new #GFile.
115 _g_dummy_file_new (const char *uri)
119 g_return_val_if_fail (uri != NULL, NULL);
121 dummy = g_object_new (G_TYPE_DUMMY_FILE, NULL);
122 dummy->text_uri = g_strdup (uri);
123 dummy->decoded_uri = _g_decode_uri (uri);
125 return G_FILE (dummy);
129 g_dummy_file_is_native (GFile *file)
135 g_dummy_file_get_basename (GFile *file)
137 GDummyFile *dummy = G_DUMMY_FILE (file);
139 if (dummy->decoded_uri)
140 return g_path_get_basename (dummy->decoded_uri->path);
141 return g_strdup (dummy->text_uri);
145 g_dummy_file_get_path (GFile *file)
151 g_dummy_file_get_uri (GFile *file)
153 return g_strdup (G_DUMMY_FILE (file)->text_uri);
157 g_dummy_file_get_parse_name (GFile *file)
159 return g_strdup (G_DUMMY_FILE (file)->text_uri);
163 g_dummy_file_get_parent (GFile *file)
165 GDummyFile *dummy = G_DUMMY_FILE (file);
169 GDecodedUri new_decoded_uri;
171 if (dummy->decoded_uri == NULL ||
172 g_strcmp0 (dummy->decoded_uri->path, "/") == 0)
175 dirname = g_path_get_dirname (dummy->decoded_uri->path);
177 if (strcmp (dirname, ".") == 0)
183 new_decoded_uri = *dummy->decoded_uri;
184 new_decoded_uri.path = dirname;
185 uri = _g_encode_uri (&new_decoded_uri);
188 parent = _g_dummy_file_new (uri);
195 g_dummy_file_dup (GFile *file)
197 GDummyFile *dummy = G_DUMMY_FILE (file);
199 return _g_dummy_file_new (dummy->text_uri);
203 g_dummy_file_hash (GFile *file)
205 GDummyFile *dummy = G_DUMMY_FILE (file);
207 return g_str_hash (dummy->text_uri);
211 g_dummy_file_equal (GFile *file1,
214 GDummyFile *dummy1 = G_DUMMY_FILE (file1);
215 GDummyFile *dummy2 = G_DUMMY_FILE (file2);
217 return g_str_equal (dummy1->text_uri, dummy2->text_uri);
221 safe_strcmp (const char *a,
229 return strcmp (a, b);
233 uri_same_except_path (GDecodedUri *a,
236 if (safe_strcmp (a->scheme, b->scheme) != 0)
238 if (safe_strcmp (a->userinfo, b->userinfo) != 0)
240 if (safe_strcmp (a->host, b->host) != 0)
242 if (a->port != b->port)
249 match_prefix (const char *path,
254 prefix_len = strlen (prefix);
255 if (strncmp (path, prefix, prefix_len) != 0)
257 return path + prefix_len;
261 g_dummy_file_prefix_matches (GFile *parent, GFile *descendant)
263 GDummyFile *parent_dummy = G_DUMMY_FILE (parent);
264 GDummyFile *descendant_dummy = G_DUMMY_FILE (descendant);
265 const char *remainder;
267 if (parent_dummy->decoded_uri != NULL &&
268 descendant_dummy->decoded_uri != NULL)
270 if (uri_same_except_path (parent_dummy->decoded_uri,
271 descendant_dummy->decoded_uri))
273 remainder = match_prefix (descendant_dummy->decoded_uri->path,
274 parent_dummy->decoded_uri->path);
275 if (remainder != NULL && *remainder == '/')
277 while (*remainder == '/')
286 remainder = match_prefix (descendant_dummy->text_uri,
287 parent_dummy->text_uri);
288 if (remainder != NULL && *remainder == '/')
290 while (*remainder == '/')
301 g_dummy_file_get_relative_path (GFile *parent,
304 GDummyFile *parent_dummy = G_DUMMY_FILE (parent);
305 GDummyFile *descendant_dummy = G_DUMMY_FILE (descendant);
306 const char *remainder;
308 if (parent_dummy->decoded_uri != NULL &&
309 descendant_dummy->decoded_uri != NULL)
311 if (uri_same_except_path (parent_dummy->decoded_uri,
312 descendant_dummy->decoded_uri))
314 remainder = match_prefix (descendant_dummy->decoded_uri->path,
315 parent_dummy->decoded_uri->path);
316 if (remainder != NULL && *remainder == '/')
318 while (*remainder == '/')
321 return g_strdup (remainder);
327 remainder = match_prefix (descendant_dummy->text_uri,
328 parent_dummy->text_uri);
329 if (remainder != NULL && *remainder == '/')
331 while (*remainder == '/')
334 return unescape_string (remainder, NULL, "/");
343 g_dummy_file_resolve_relative_path (GFile *file,
344 const char *relative_path)
346 GDummyFile *dummy = G_DUMMY_FILE (file);
349 GDecodedUri new_decoded_uri;
352 if (dummy->decoded_uri == NULL)
354 str = g_string_new (dummy->text_uri);
355 g_string_append (str, "/");
356 g_string_append_encoded (str, relative_path, SUB_DELIM_CHARS ":@/");
357 child = _g_dummy_file_new (str->str);
358 g_string_free (str, TRUE);
362 new_decoded_uri = *dummy->decoded_uri;
364 if (g_path_is_absolute (relative_path))
365 new_decoded_uri.path = g_strdup (relative_path);
367 new_decoded_uri.path = g_build_filename (new_decoded_uri.path, relative_path, NULL);
369 uri = _g_encode_uri (&new_decoded_uri);
370 g_free (new_decoded_uri.path);
372 child = _g_dummy_file_new (uri);
380 g_dummy_file_get_child_for_display_name (GFile *file,
381 const char *display_name,
384 return g_file_get_child (file, display_name);
388 g_dummy_file_has_uri_scheme (GFile *file,
389 const char *uri_scheme)
391 GDummyFile *dummy = G_DUMMY_FILE (file);
393 if (dummy->decoded_uri)
394 return g_ascii_strcasecmp (uri_scheme, dummy->decoded_uri->scheme) == 0;
399 g_dummy_file_get_uri_scheme (GFile *file)
401 GDummyFile *dummy = G_DUMMY_FILE (file);
403 if (dummy->decoded_uri)
404 return g_strdup (dummy->decoded_uri->scheme);
411 g_dummy_file_file_iface_init (GFileIface *iface)
413 iface->dup = g_dummy_file_dup;
414 iface->hash = g_dummy_file_hash;
415 iface->equal = g_dummy_file_equal;
416 iface->is_native = g_dummy_file_is_native;
417 iface->has_uri_scheme = g_dummy_file_has_uri_scheme;
418 iface->get_uri_scheme = g_dummy_file_get_uri_scheme;
419 iface->get_basename = g_dummy_file_get_basename;
420 iface->get_path = g_dummy_file_get_path;
421 iface->get_uri = g_dummy_file_get_uri;
422 iface->get_parse_name = g_dummy_file_get_parse_name;
423 iface->get_parent = g_dummy_file_get_parent;
424 iface->prefix_matches = g_dummy_file_prefix_matches;
425 iface->get_relative_path = g_dummy_file_get_relative_path;
426 iface->resolve_relative_path = g_dummy_file_resolve_relative_path;
427 iface->get_child_for_display_name = g_dummy_file_get_child_for_display_name;
429 iface->supports_thread_contexts = TRUE;
432 /* Uri handling helper functions: */
435 unescape_character (const char *scanner)
440 first_digit = g_ascii_xdigit_value (*scanner++);
444 second_digit = g_ascii_xdigit_value (*scanner++);
445 if (second_digit < 0)
448 return (first_digit << 4) | second_digit;
452 unescape_string (const gchar *escaped_string,
453 const gchar *escaped_string_end,
454 const gchar *illegal_characters)
460 if (escaped_string == NULL)
463 if (escaped_string_end == NULL)
464 escaped_string_end = escaped_string + strlen (escaped_string);
466 result = g_malloc (escaped_string_end - escaped_string + 1);
469 for (in = escaped_string; in < escaped_string_end; in++)
475 if (escaped_string_end - in < 2)
481 character = unescape_character (in);
483 /* Check for an illegal character. We consider '\0' illegal here. */
484 if (character <= 0 ||
485 (illegal_characters != NULL &&
486 strchr (illegal_characters, (char)character) != NULL))
491 in++; /* The other char will be eaten in the loop header */
493 *out++ = (char)character;
497 g_warn_if_fail (out - result <= strlen (escaped_string));
502 _g_decoded_uri_free (GDecodedUri *decoded)
507 g_free (decoded->scheme);
508 g_free (decoded->query);
509 g_free (decoded->fragment);
510 g_free (decoded->userinfo);
511 g_free (decoded->host);
512 g_free (decoded->path);
517 _g_decoded_uri_new (void)
521 uri = g_new0 (GDecodedUri, 1);
528 _g_decode_uri (const char *uri)
530 GDecodedUri *decoded;
531 const char *p, *in, *hier_part_start, *hier_part_end, *query_start, *fragment_start;
535 /* From RFC 3986 Decodes:
536 * URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
542 scheme = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
545 if (!g_ascii_isalpha (*p))
555 if (!(g_ascii_isalnum(c) ||
562 decoded = _g_decoded_uri_new ();
564 decoded->scheme = g_malloc (p - uri);
565 out = decoded->scheme;
566 for (in = uri; in < p - 1; in++)
567 *out++ = g_ascii_tolower (*in);
572 query_start = strchr (p, '?');
575 hier_part_end = query_start++;
576 fragment_start = strchr (query_start, '#');
579 decoded->query = g_strndup (query_start, fragment_start - query_start);
580 decoded->fragment = g_strdup (fragment_start+1);
584 decoded->query = g_strdup (query_start);
585 decoded->fragment = NULL;
591 decoded->query = NULL;
592 fragment_start = strchr (p, '#');
595 hier_part_end = fragment_start++;
596 decoded->fragment = g_strdup (fragment_start);
600 hier_part_end = p + strlen (p);
601 decoded->fragment = NULL;
606 hier-part = "//" authority path-abempty
613 if (hier_part_start[0] == '/' &&
614 hier_part_start[1] == '/')
616 const char *authority_start, *authority_end;
617 const char *userinfo_start, *userinfo_end;
618 const char *host_start, *host_end;
619 const char *port_start;
621 authority_start = hier_part_start + 2;
622 /* authority is always followed by / or nothing */
623 authority_end = memchr (authority_start, '/', hier_part_end - authority_start);
624 if (authority_end == NULL)
625 authority_end = hier_part_end;
628 authority = [ userinfo "@" ] host [ ":" port ]
631 userinfo_end = memchr (authority_start, '@', authority_end - authority_start);
634 userinfo_start = authority_start;
635 decoded->userinfo = unescape_string (userinfo_start, userinfo_end, NULL);
636 if (decoded->userinfo == NULL)
638 _g_decoded_uri_free (decoded);
641 host_start = userinfo_end + 1;
644 host_start = authority_start;
646 port_start = memchr (host_start, ':', authority_end - host_start);
649 host_end = port_start++;
651 decoded->port = atoi(port_start);
655 host_end = authority_end;
659 decoded->host = g_strndup (host_start, host_end - host_start);
661 hier_part_start = authority_end;
664 decoded->path = unescape_string (hier_part_start, hier_part_end, "/");
666 if (decoded->path == NULL)
668 _g_decoded_uri_free (decoded);
676 is_valid (char c, const char *reserved_chars_allowed)
678 if (g_ascii_isalnum (c) ||
685 if (reserved_chars_allowed &&
686 strchr (reserved_chars_allowed, c) != NULL)
693 g_string_append_encoded (GString *string,
695 const char *reserved_chars_allowed)
698 static const gchar hex[16] = "0123456789ABCDEF";
700 while ((c = *encoded) != 0)
702 if (is_valid (c, reserved_chars_allowed))
704 g_string_append_c (string, c);
709 g_string_append_c (string, '%');
710 g_string_append_c (string, hex[((guchar)c) >> 4]);
711 g_string_append_c (string, hex[((guchar)c) & 0xf]);
718 _g_encode_uri (GDecodedUri *decoded)
722 uri = g_string_new (NULL);
724 g_string_append (uri, decoded->scheme);
725 g_string_append (uri, "://");
727 if (decoded->host != NULL)
729 if (decoded->userinfo)
731 /* userinfo = *( unreserved / pct-encoded / sub-delims / ":" ) */
732 g_string_append_encoded (uri, decoded->userinfo, SUB_DELIM_CHARS ":");
733 g_string_append_c (uri, '@');
736 g_string_append (uri, decoded->host);
738 if (decoded->port != -1)
740 g_string_append_c (uri, ':');
741 g_string_append_printf (uri, "%d", decoded->port);
745 g_string_append_encoded (uri, decoded->path, SUB_DELIM_CHARS ":@/");
749 g_string_append_c (uri, '?');
750 g_string_append (uri, decoded->query);
753 if (decoded->fragment)
755 g_string_append_c (uri, '#');
756 g_string_append (uri, decoded->fragment);
759 return g_string_free (uri, FALSE);