1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
3 /* GIO - GLib Input, Output and Streaming Library
5 * Copyright (C) 2006-2007 Red Hat, Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20 * Boston, MA 02111-1307, USA.
22 * Author: Alexander Larsson <alexl@redhat.com>
26 #include <sys/types.h>
30 #include "gcontenttypeprivate.h"
31 #include "gthemedicon.h"
34 #include "gfileenumerator.h"
35 #include "gfileinfo.h"
40 * SECTION:gcontenttype
41 * @short_description: Platform-specific content typing
44 * A content type is a platform specific string that defines the type
45 * of a file. On UNIX it is a <ulink url="http://www.wikipedia.org/wiki/Internet_media_type">mime type</ulink> like "text/plain" or "image/png".
46 * On Win32 it is an extension string like ".doc", ".txt" or a perceived
47 * string like "audio". Such strings can be looked up in the registry at
53 #define XDG_PREFIX _gio_xdg
54 #include "xdgmime/xdgmime.h"
56 /* We lock this mutex whenever we modify global state in this module. */
57 G_LOCK_DEFINE_STATIC (gio_xdgmime);
60 _g_unix_content_type_get_sniff_len (void)
65 size = xdg_mime_get_max_buffer_extents ();
66 G_UNLOCK (gio_xdgmime);
72 _g_unix_content_type_unalias (const gchar *type)
77 res = g_strdup (xdg_mime_unalias_mime_type (type));
78 G_UNLOCK (gio_xdgmime);
84 _g_unix_content_type_get_parents (const gchar *type)
91 array = g_ptr_array_new ();
95 umime = xdg_mime_unalias_mime_type (type);
97 g_ptr_array_add (array, g_strdup (umime));
99 parents = xdg_mime_list_mime_parents (umime);
100 for (i = 0; parents && parents[i] != NULL; i++)
101 g_ptr_array_add (array, g_strdup (parents[i]));
105 G_UNLOCK (gio_xdgmime);
107 g_ptr_array_add (array, NULL);
109 return (gchar **)g_ptr_array_free (array, FALSE);
113 * g_content_type_equals:
114 * @type1: a content type string
115 * @type2: a content type string
117 * Compares two content types for equality.
119 * Returns: %TRUE if the two strings are identical or equivalent,
123 g_content_type_equals (const gchar *type1,
128 g_return_val_if_fail (type1 != NULL, FALSE);
129 g_return_val_if_fail (type2 != NULL, FALSE);
131 G_LOCK (gio_xdgmime);
132 res = xdg_mime_mime_type_equal (type1, type2);
133 G_UNLOCK (gio_xdgmime);
139 * g_content_type_is_a:
140 * @type: a content type string
141 * @supertype: a content type string
143 * Determines if @type is a subset of @supertype.
145 * Returns: %TRUE if @type is a kind of @supertype,
149 g_content_type_is_a (const gchar *type,
150 const gchar *supertype)
154 g_return_val_if_fail (type != NULL, FALSE);
155 g_return_val_if_fail (supertype != NULL, FALSE);
157 G_LOCK (gio_xdgmime);
158 res = xdg_mime_mime_type_subclass (type, supertype);
159 G_UNLOCK (gio_xdgmime);
165 * g_content_type_is_unknown:
166 * @type: a content type string
168 * Checks if the content type is the generic "unknown" type.
169 * On UNIX this is the "application/octet-stream" mimetype,
170 * while on win32 it is "*".
172 * Returns: %TRUE if the type is the unknown type.
175 g_content_type_is_unknown (const gchar *type)
177 g_return_val_if_fail (type != NULL, FALSE);
179 return strcmp (XDG_MIME_TYPE_UNKNOWN, type) == 0;
185 MIME_TAG_TYPE_COMMENT
190 int current_lang_level;
191 int comment_lang_level;
197 language_level (const char *lang)
199 const char * const *lang_list;
202 /* The returned list is sorted from most desirable to least
203 desirable and always contains the default locale "C". */
204 lang_list = g_get_language_names ();
206 for (i = 0; lang_list[i]; i++)
207 if (strcmp (lang_list[i], lang) == 0)
214 mime_info_start_element (GMarkupParseContext *context,
215 const gchar *element_name,
216 const gchar **attribute_names,
217 const gchar **attribute_values,
223 MimeParser *parser = user_data;
225 if (strcmp (element_name, "comment") == 0)
228 for (i = 0; attribute_names[i]; i++)
229 if (strcmp (attribute_names[i], "xml:lang") == 0)
231 lang = attribute_values[i];
235 parser->current_lang_level = language_level (lang);
236 parser->current_type = MIME_TAG_TYPE_COMMENT;
239 parser->current_type = MIME_TAG_TYPE_OTHER;
243 mime_info_end_element (GMarkupParseContext *context,
244 const gchar *element_name,
248 MimeParser *parser = user_data;
250 parser->current_type = MIME_TAG_TYPE_OTHER;
254 mime_info_text (GMarkupParseContext *context,
260 MimeParser *parser = user_data;
262 if (parser->current_type == MIME_TAG_TYPE_COMMENT &&
263 parser->current_lang_level > parser->comment_lang_level)
265 g_free (parser->comment);
266 parser->comment = g_strndup (text, text_len);
267 parser->comment_lang_level = parser->current_lang_level;
272 load_comment_for_mime_helper (const char *dir,
273 const char *basename)
275 GMarkupParseContext *context;
276 char *filename, *data;
279 MimeParser parse_data = {0};
280 GMarkupParser parser = {
281 mime_info_start_element,
282 mime_info_end_element,
286 filename = g_build_filename (dir, "mime", basename, NULL);
288 res = g_file_get_contents (filename, &data, &len, NULL);
293 context = g_markup_parse_context_new (&parser, 0, &parse_data, NULL);
294 res = g_markup_parse_context_parse (context, data, len, NULL);
296 g_markup_parse_context_free (context);
301 return parse_data.comment;
306 load_comment_for_mime (const char *mimetype)
308 const char * const* dirs;
313 basename = g_strdup_printf ("%s.xml", mimetype);
315 comment = load_comment_for_mime_helper (g_get_user_data_dir (), basename);
322 dirs = g_get_system_data_dirs ();
324 for (i = 0; dirs[i] != NULL; i++)
326 comment = load_comment_for_mime_helper (dirs[i], basename);
335 return g_strdup_printf (_("%s type"), mimetype);
339 * g_content_type_get_description:
340 * @type: a content type string
342 * Gets the human readable description of the content type.
344 * Returns: a short description of the content type @type. Free the
345 * returned string with g_free()
348 g_content_type_get_description (const gchar *type)
350 static GHashTable *type_comment_cache = NULL;
353 g_return_val_if_fail (type != NULL, NULL);
355 G_LOCK (gio_xdgmime);
356 type = xdg_mime_unalias_mime_type (type);
358 if (type_comment_cache == NULL)
359 type_comment_cache = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
361 comment = g_hash_table_lookup (type_comment_cache, type);
362 comment = g_strdup (comment);
363 G_UNLOCK (gio_xdgmime);
368 comment = load_comment_for_mime (type);
370 G_LOCK (gio_xdgmime);
371 g_hash_table_insert (type_comment_cache,
374 G_UNLOCK (gio_xdgmime);
380 * g_content_type_get_mime_type:
381 * @type: a content type string
383 * Gets the mime type for the content type, if one is registered.
385 * Returns: (allow-none): the registered mime type for the given @type,
386 * or %NULL if unknown.
389 g_content_type_get_mime_type (const char *type)
391 g_return_val_if_fail (type != NULL, NULL);
393 return g_strdup (type);
397 * g_content_type_get_icon:
398 * @type: a content type string
400 * Gets the icon for a content type.
402 * Returns: (transfer full): #GIcon corresponding to the content type. Free the returned
403 * object with g_object_unref()
406 g_content_type_get_icon (const gchar *type)
408 char *mimetype_icon, *generic_mimetype_icon, *q;
409 char *xdg_mimetype_icon, *legacy_mimetype_icon;
410 char *xdg_mimetype_generic_icon;
416 g_return_val_if_fail (type != NULL, NULL);
418 G_LOCK (gio_xdgmime);
419 xdg_mimetype_icon = g_strdup (xdg_mime_get_icon (type));
420 xdg_mimetype_generic_icon = g_strdup (xdg_mime_get_generic_icon (type));
421 G_UNLOCK (gio_xdgmime);
423 mimetype_icon = g_strdup (type);
425 while ((q = strchr (mimetype_icon, '/')) != NULL)
428 p = strchr (type, '/');
430 p = type + strlen (type);
432 /* Not all icons have migrated to the new icon theme spec, look for old names too */
433 legacy_mimetype_icon = g_strconcat ("gnome-mime-", mimetype_icon, NULL);
435 generic_mimetype_icon = g_malloc (p - type + strlen ("-x-generic") + 1);
436 memcpy (generic_mimetype_icon, type, p - type);
437 memcpy (generic_mimetype_icon + (p - type), "-x-generic", strlen ("-x-generic"));
438 generic_mimetype_icon[(p - type) + strlen ("-x-generic")] = 0;
440 if (xdg_mimetype_icon)
441 icon_names[n++] = xdg_mimetype_icon;
443 icon_names[n++] = mimetype_icon;
444 icon_names[n++] = legacy_mimetype_icon;
446 if (xdg_mimetype_generic_icon)
447 icon_names[n++] = xdg_mimetype_generic_icon;
449 icon_names[n++] = generic_mimetype_icon;
451 themed_icon = g_themed_icon_new_from_names (icon_names, n);
453 g_free (xdg_mimetype_icon);
454 g_free (xdg_mimetype_generic_icon);
455 g_free (mimetype_icon);
456 g_free (legacy_mimetype_icon);
457 g_free (generic_mimetype_icon);
463 * g_content_type_can_be_executable:
464 * @type: a content type string
466 * Checks if a content type can be executable. Note that for instance
467 * things like text files can be executables (i.e. scripts and batch files).
469 * Returns: %TRUE if the file type corresponds to a type that
470 * can be executable, %FALSE otherwise.
473 g_content_type_can_be_executable (const gchar *type)
475 g_return_val_if_fail (type != NULL, FALSE);
477 if (g_content_type_is_a (type, "application/x-executable") ||
478 g_content_type_is_a (type, "text/plain"))
485 looks_like_text (const guchar *data, gsize data_size)
490 for (i = 0; i < data_size; i++)
494 if (g_ascii_iscntrl (c) &&
495 !g_ascii_isspace (c) &&
503 * g_content_type_from_mime_type:
504 * @mime_type: a mime type string
506 * Tries to find a content type based on the mime type name.
508 * Returns: (allow-none): Newly allocated string with content type
509 * or %NULL. Free with g_free()
514 g_content_type_from_mime_type (const gchar *mime_type)
518 g_return_val_if_fail (mime_type != NULL, NULL);
520 G_LOCK (gio_xdgmime);
521 /* mime type and content type are same on unixes */
522 umime = g_strdup (xdg_mime_unalias_mime_type (mime_type));
523 G_UNLOCK (gio_xdgmime);
529 * g_content_type_guess:
530 * @filename: (allow-none): a string, or %NULL
531 * @data: (allow-none) (array length=data_size): a stream of data, or %NULL
532 * @data_size: the size of @data
533 * @result_uncertain: (allow-none) (out): return location for the certainty
534 * of the result, or %NULL
536 * Guesses the content type based on example data. If the function is
537 * uncertain, @result_uncertain will be set to %TRUE. Either @filename
538 * or @data may be %NULL, in which case the guess will be based solely
539 * on the other argument.
541 * Returns: a string indicating a guessed content type for the
542 * given data. Free with g_free()
545 g_content_type_guess (const gchar *filename,
548 gboolean *result_uncertain)
551 const char *name_mimetypes[10], *sniffed_mimetype;
554 int n_name_mimetypes;
558 n_name_mimetypes = 0;
559 sniffed_mimetype = XDG_MIME_TYPE_UNKNOWN;
561 if (result_uncertain)
562 *result_uncertain = FALSE;
564 /* our test suite and potentially other code used -1 in the past, which is
565 * not documented and not allowed; guard against that */
566 g_return_val_if_fail (data_size != (gsize) -1, g_strdup (XDG_MIME_TYPE_UNKNOWN));
568 G_LOCK (gio_xdgmime);
572 i = strlen (filename);
573 if (filename[i - 1] == '/')
575 name_mimetypes[0] = "inode/directory";
576 name_mimetypes[1] = NULL;
577 n_name_mimetypes = 1;
578 if (result_uncertain)
579 *result_uncertain = TRUE;
583 basename = g_path_get_basename (filename);
584 n_name_mimetypes = xdg_mime_get_mime_types_from_file_name (basename, name_mimetypes, 10);
589 /* Got an extension match, and no conflicts. This is it. */
590 if (n_name_mimetypes == 1)
592 G_UNLOCK (gio_xdgmime);
593 return g_strdup (name_mimetypes[0]);
598 sniffed_mimetype = xdg_mime_get_mime_type_for_data (data, data_size, &sniffed_prio);
599 if (sniffed_mimetype == XDG_MIME_TYPE_UNKNOWN &&
601 looks_like_text (data, data_size))
602 sniffed_mimetype = "text/plain";
604 /* For security reasons we don't ever want to sniff desktop files
605 * where we know the filename and it doesn't have a .desktop extension.
606 * This is because desktop files allow executing any application and
607 * we don't want to make it possible to hide them looking like something
610 if (filename != NULL &&
611 strcmp (sniffed_mimetype, "application/x-desktop") == 0)
612 sniffed_mimetype = "text/plain";
615 if (n_name_mimetypes == 0)
617 if (sniffed_mimetype == XDG_MIME_TYPE_UNKNOWN &&
619 *result_uncertain = TRUE;
621 mimetype = g_strdup (sniffed_mimetype);
626 if (sniffed_mimetype != XDG_MIME_TYPE_UNKNOWN)
628 if (sniffed_prio >= 80) /* High priority sniffing match, use that */
629 mimetype = g_strdup (sniffed_mimetype);
632 /* There are conflicts between the name matches and we
633 * have a sniffed type, use that as a tie breaker.
635 for (i = 0; i < n_name_mimetypes; i++)
637 if ( xdg_mime_mime_type_subclass (name_mimetypes[i], sniffed_mimetype))
639 /* This nametype match is derived from (or the same as)
640 * the sniffed type). This is probably it.
642 mimetype = g_strdup (name_mimetypes[i]);
649 if (mimetype == NULL)
651 /* Conflicts, and sniffed type was no help or not there.
652 * Guess on the first one
654 mimetype = g_strdup (name_mimetypes[0]);
655 if (result_uncertain)
656 *result_uncertain = TRUE;
660 G_UNLOCK (gio_xdgmime);
666 enumerate_mimetypes_subdir (const char *dir,
668 GHashTable *mimetypes)
677 while ((ent = readdir (d)) != NULL)
679 if (g_str_has_suffix (ent->d_name, ".xml"))
681 mimetype = g_strdup_printf ("%s/%.*s", prefix, (int) strlen (ent->d_name) - 4, ent->d_name);
682 g_hash_table_replace (mimetypes, mimetype, NULL);
690 enumerate_mimetypes_dir (const char *dir,
691 GHashTable *mimetypes)
698 mimedir = g_build_filename (dir, "mime", NULL);
700 d = opendir (mimedir);
703 while ((ent = readdir (d)) != NULL)
705 if (strcmp (ent->d_name, "packages") != 0)
707 name = g_build_filename (mimedir, ent->d_name, NULL);
708 if (g_file_test (name, G_FILE_TEST_IS_DIR))
709 enumerate_mimetypes_subdir (name, ent->d_name, mimetypes);
720 * g_content_types_get_registered:
722 * Gets a list of strings containing all the registered content types
723 * known to the system. The list and its data should be freed using
725 * g_list_free_full (list, g_free);
728 * Returns: (element-type utf8) (transfer full): #GList of the registered content types
731 g_content_types_get_registered (void)
733 const char * const* dirs;
734 GHashTable *mimetypes;
740 mimetypes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
742 enumerate_mimetypes_dir (g_get_user_data_dir (), mimetypes);
743 dirs = g_get_system_data_dirs ();
745 for (i = 0; dirs[i] != NULL; i++)
746 enumerate_mimetypes_dir (dirs[i], mimetypes);
749 g_hash_table_iter_init (&iter, mimetypes);
750 while (g_hash_table_iter_next (&iter, &key, NULL))
752 l = g_list_prepend (l, key);
753 g_hash_table_iter_steal (&iter);
756 g_hash_table_destroy (mimetypes);
762 /* tree magic data */
763 static GList *tree_matches = NULL;
764 static gboolean need_reload = FALSE;
766 G_LOCK_DEFINE_STATIC (gio_treemagic);
772 guint match_case : 1;
773 guint executable : 1;
789 tree_matchlet_free (TreeMatchlet *matchlet)
791 g_list_free_full (matchlet->matches, (GDestroyNotify) tree_matchlet_free);
792 g_free (matchlet->path);
793 g_free (matchlet->mimetype);
794 g_slice_free (TreeMatchlet, matchlet);
798 tree_match_free (TreeMatch *match)
800 g_list_free_full (match->matches, (GDestroyNotify) tree_matchlet_free);
801 g_free (match->contenttype);
802 g_slice_free (TreeMatch, match);
806 parse_header (gchar *line)
814 if (line[0] != '[' || line[len - 1] != ']')
818 s = strchr (line, ':');
820 match = g_slice_new0 (TreeMatch);
821 match->priority = atoi (line + 1);
822 match->contenttype = g_strdup (s + 1);
827 static TreeMatchlet *
828 parse_match_line (gchar *line,
832 TreeMatchlet *matchlet;
836 matchlet = g_slice_new0 (TreeMatchlet);
845 *depth = atoi (line);
846 s = strchr (line, '>');
852 matchlet->path = g_strdup (s);
854 parts = g_strsplit (s, ",", 0);
855 if (strcmp (parts[0], "=file") == 0)
856 matchlet->type = G_FILE_TYPE_REGULAR;
857 else if (strcmp (parts[0], "=directory") == 0)
858 matchlet->type = G_FILE_TYPE_DIRECTORY;
859 else if (strcmp (parts[0], "=link") == 0)
860 matchlet->type = G_FILE_TYPE_SYMBOLIC_LINK;
862 matchlet->type = G_FILE_TYPE_UNKNOWN;
863 for (i = 1; parts[i]; i++)
865 if (strcmp (parts[i], "executable") == 0)
866 matchlet->executable = 1;
867 else if (strcmp (parts[i], "match-case") == 0)
868 matchlet->match_case = 1;
869 else if (strcmp (parts[i], "non-empty") == 0)
870 matchlet->non_empty = 1;
871 else if (strcmp (parts[i], "on-disc") == 0)
872 matchlet->on_disc = 1;
874 matchlet->mimetype = g_strdup (parts[i]);
883 cmp_match (gconstpointer a, gconstpointer b)
885 const TreeMatch *aa = (const TreeMatch *)a;
886 const TreeMatch *bb = (const TreeMatch *)b;
888 return bb->priority - aa->priority;
892 insert_match (TreeMatch *match)
894 tree_matches = g_list_insert_sorted (tree_matches, match, cmp_match);
898 insert_matchlet (TreeMatch *match,
899 TreeMatchlet *matchlet,
903 match->matches = g_list_append (match->matches, matchlet);
909 last = g_list_last (match->matches);
912 tree_matchlet_free (matchlet);
913 g_warning ("can't insert tree matchlet at depth %d", depth);
917 m = (TreeMatchlet *) last->data;
920 last = g_list_last (m->matches);
923 tree_matchlet_free (matchlet);
924 g_warning ("can't insert tree matchlet at depth %d", depth);
928 m = (TreeMatchlet *) last->data;
930 m->matches = g_list_append (m->matches, matchlet);
935 read_tree_magic_from_directory (const gchar *prefix)
943 TreeMatchlet *matchlet;
946 filename = g_build_filename (prefix, "mime", "treemagic", NULL);
948 if (g_file_get_contents (filename, &text, &len, NULL))
950 if (strcmp (text, "MIME-TreeMagic") == 0)
952 lines = g_strsplit (text + strlen ("MIME-TreeMagic") + 2, "\n", 0);
954 for (i = 0; lines[i] && lines[i][0]; i++)
956 if (lines[i][0] == '[')
958 match = parse_header (lines[i]);
959 insert_match (match);
963 matchlet = parse_match_line (lines[i], &depth);
964 insert_matchlet (match, matchlet, depth);
971 g_warning ("%s: header not found, skipping\n", filename);
981 xdg_mime_reload (void *user_data)
987 tree_magic_shutdown (void)
989 g_list_free_full (tree_matches, (GDestroyNotify) tree_match_free);
994 tree_magic_init (void)
996 static gboolean initialized = FALSE;
998 const gchar * const * dirs;
1005 xdg_mime_register_reload_callback (xdg_mime_reload, NULL, NULL);
1011 need_reload = FALSE;
1013 tree_magic_shutdown ();
1015 dir = g_get_user_data_dir ();
1016 read_tree_magic_from_directory (dir);
1017 dirs = g_get_system_data_dirs ();
1018 for (i = 0; dirs[i]; i++)
1019 read_tree_magic_from_directory (dirs[i]);
1023 /* a filtering enumerator */
1029 gboolean ignore_case;
1031 gchar **case_components;
1032 GFileEnumerator **enumerators;
1037 component_match (Enumerator *e,
1041 gchar *case_folded, *key;
1044 if (strcmp (name, e->components[depth]) == 0)
1047 if (!e->ignore_case)
1050 case_folded = g_utf8_casefold (name, -1);
1051 key = g_utf8_collate_key (case_folded, -1);
1053 found = strcmp (key, e->case_components[depth]) == 0;
1055 g_free (case_folded);
1062 next_match_recurse (Enumerator *e,
1071 if (e->enumerators[depth] == NULL)
1075 file = next_match_recurse (e, depth - 1);
1078 e->children[depth] = file;
1079 e->enumerators[depth] = g_file_enumerate_children (file,
1080 G_FILE_ATTRIBUTE_STANDARD_NAME,
1081 G_FILE_QUERY_INFO_NONE,
1086 if (e->enumerators[depth] == NULL)
1090 while ((info = g_file_enumerator_next_file (e->enumerators[depth], NULL, NULL)))
1092 name = g_file_info_get_name (info);
1093 if (component_match (e, depth, name))
1095 file = g_file_get_child (e->children[depth], name);
1096 g_object_unref (info);
1099 g_object_unref (info);
1102 g_object_unref (e->enumerators[depth]);
1103 e->enumerators[depth] = NULL;
1104 g_object_unref (e->children[depth]);
1105 e->children[depth] = NULL;
1110 enumerator_next (Enumerator *e)
1112 return next_match_recurse (e, e->depth - 1);
1116 enumerator_new (GFile *root,
1118 gboolean ignore_case)
1124 e = g_new0 (Enumerator, 1);
1125 e->path = g_strdup (path);
1126 e->ignore_case = ignore_case;
1128 e->components = g_strsplit (e->path, G_DIR_SEPARATOR_S, -1);
1129 e->depth = g_strv_length (e->components);
1132 e->case_components = g_new0 (char *, e->depth + 1);
1133 for (i = 0; e->components[i]; i++)
1135 case_folded = g_utf8_casefold (e->components[i], -1);
1136 e->case_components[i] = g_utf8_collate_key (case_folded, -1);
1137 g_free (case_folded);
1141 e->children = g_new0 (GFile *, e->depth);
1142 e->children[0] = g_object_ref (root);
1143 e->enumerators = g_new0 (GFileEnumerator *, e->depth);
1144 e->enumerators[0] = g_file_enumerate_children (root,
1145 G_FILE_ATTRIBUTE_STANDARD_NAME,
1146 G_FILE_QUERY_INFO_NONE,
1154 enumerator_free (Enumerator *e)
1158 for (i = 0; i < e->depth; i++)
1160 if (e->enumerators[i])
1161 g_object_unref (e->enumerators[i]);
1163 g_object_unref (e->children[i]);
1166 g_free (e->enumerators);
1167 g_free (e->children);
1168 g_strfreev (e->components);
1169 if (e->case_components)
1170 g_strfreev (e->case_components);
1176 matchlet_match (TreeMatchlet *matchlet,
1186 e = enumerator_new (root, matchlet->path, !matchlet->match_case);
1190 file = enumerator_next (e);
1193 enumerator_free (e);
1197 if (matchlet->mimetype)
1198 attrs = G_FILE_ATTRIBUTE_STANDARD_TYPE ","
1199 G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE ","
1200 G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE;
1202 attrs = G_FILE_ATTRIBUTE_STANDARD_TYPE ","
1203 G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE;
1204 info = g_file_query_info (file,
1206 G_FILE_QUERY_INFO_NONE,
1213 if (matchlet->type != G_FILE_TYPE_UNKNOWN &&
1214 g_file_info_get_file_type (info) != matchlet->type)
1217 if (matchlet->executable &&
1218 !g_file_info_get_attribute_boolean (info, G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE))
1224 if (result && matchlet->non_empty)
1226 GFileEnumerator *child_enum;
1227 GFileInfo *child_info;
1229 child_enum = g_file_enumerate_children (file,
1230 G_FILE_ATTRIBUTE_STANDARD_NAME,
1231 G_FILE_QUERY_INFO_NONE,
1237 child_info = g_file_enumerator_next_file (child_enum, NULL, NULL);
1239 g_object_unref (child_info);
1242 g_object_unref (child_enum);
1248 if (result && matchlet->mimetype)
1250 if (strcmp (matchlet->mimetype, g_file_info_get_content_type (info)) != 0)
1254 g_object_unref (info);
1255 g_object_unref (file);
1259 enumerator_free (e);
1261 if (!matchlet->matches)
1264 for (l = matchlet->matches; l; l = l->next)
1266 TreeMatchlet *submatchlet;
1268 submatchlet = l->data;
1269 if (matchlet_match (submatchlet, root))
1277 match_match (TreeMatch *match,
1283 for (l = match->matches; l; l = l->next)
1285 TreeMatchlet *matchlet = l->data;
1286 if (matchlet_match (matchlet, root))
1288 g_ptr_array_add (types, g_strdup (match->contenttype));
1295 * g_content_type_guess_for_tree:
1296 * @root: the root of the tree to guess a type for
1298 * Tries to guess the type of the tree with root @root, by
1299 * looking at the files it contains. The result is an array
1300 * of content types, with the best guess coming first.
1302 * The types returned all have the form x-content/foo, e.g.
1303 * x-content/audio-cdda (for audio CDs) or x-content/image-dcf
1304 * (for a camera memory card). See the <ulink url="http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec">shared-mime-info</ulink>
1305 * specification for more on x-content types.
1307 * This function is useful in the implementation of
1308 * g_mount_guess_content_type().
1310 * Returns: (transfer full) (array zero-terminated=1): an %NULL-terminated
1311 * array of zero or more content types. Free with g_strfreev()
1316 g_content_type_guess_for_tree (GFile *root)
1321 types = g_ptr_array_new ();
1323 G_LOCK (gio_treemagic);
1326 for (l = tree_matches; l; l = l->next)
1328 TreeMatch *match = l->data;
1329 match_match (match, root, types);
1332 G_UNLOCK (gio_treemagic);
1334 g_ptr_array_add (types, NULL);
1336 return (gchar **)g_ptr_array_free (types, FALSE);