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, see <http://www.gnu.org/licenses/>.
20 * Author: Alexander Larsson <alexl@redhat.com>
24 #include <sys/types.h>
28 #include "gcontenttypeprivate.h"
29 #include "gthemedicon.h"
32 #include "gfileenumerator.h"
33 #include "gfileinfo.h"
38 * SECTION:gcontenttype
39 * @short_description: Platform-specific content typing
42 * A content type is a platform specific string that defines the type
43 * of a file. On UNIX it is a
44 * [mime type](http://www.wikipedia.org/wiki/Internet_media_type)
45 * 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: (nullable): 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_internal (const gchar *type,
401 char *generic_mimetype_icon = NULL;
406 const char *xdg_icon;
409 g_return_val_if_fail (type != NULL, NULL);
411 G_LOCK (gio_xdgmime);
412 xdg_icon = xdg_mime_get_icon (type);
413 G_UNLOCK (gio_xdgmime);
416 icon_names[n++] = g_strdup (xdg_icon);
418 mimetype_icon = g_strdup (type);
419 while ((q = strchr (mimetype_icon, '/')) != NULL)
422 icon_names[n++] = mimetype_icon;
424 generic_mimetype_icon = g_content_type_get_generic_icon_name (type);
425 if (generic_mimetype_icon)
426 icon_names[n++] = generic_mimetype_icon;
430 for (i = 0; i < n; i++)
432 icon_names[n + i] = icon_names[i];
433 icon_names[i] = g_strconcat (icon_names[i], "-symbolic", NULL);
439 themed_icon = g_themed_icon_new_from_names (icon_names, n);
441 for (i = 0; i < n; i++)
442 g_free (icon_names[i]);
448 * g_content_type_get_icon:
449 * @type: a content type string
451 * Gets the icon for a content type.
453 * Returns: (transfer full): #GIcon corresponding to the content type. Free the returned
454 * object with g_object_unref()
457 g_content_type_get_icon (const gchar *type)
459 return g_content_type_get_icon_internal (type, FALSE);
463 * g_content_type_get_symbolic_icon:
464 * @type: a content type string
466 * Gets the symbolic icon for a content type.
468 * Returns: (transfer full): symbolic #GIcon corresponding to the content type.
469 * Free the returned object with g_object_unref()
474 g_content_type_get_symbolic_icon (const gchar *type)
476 return g_content_type_get_icon_internal (type, TRUE);
480 * g_content_type_get_generic_icon_name:
481 * @type: a content type string
483 * Gets the generic icon name for a content type.
486 * [shared-mime-info](http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec)
487 * specification for more on the generic icon name.
489 * Returns: (allow-none): the registered generic icon name for the given @type,
490 * or %NULL if unknown. Free with g_free()
495 g_content_type_get_generic_icon_name (const gchar *type)
497 const gchar *xdg_icon_name;
500 G_LOCK (gio_xdgmime);
501 xdg_icon_name = xdg_mime_get_generic_icon (type);
502 G_UNLOCK (gio_xdgmime);
507 const char *suffix = "-x-generic";
509 p = strchr (type, '/');
511 p = type + strlen (type);
513 icon_name = g_malloc (p - type + strlen (suffix) + 1);
514 memcpy (icon_name, type, p - type);
515 memcpy (icon_name + (p - type), suffix, strlen (suffix));
516 icon_name[(p - type) + strlen (suffix)] = 0;
520 icon_name = g_strdup (xdg_icon_name);
527 * g_content_type_can_be_executable:
528 * @type: a content type string
530 * Checks if a content type can be executable. Note that for instance
531 * things like text files can be executables (i.e. scripts and batch files).
533 * Returns: %TRUE if the file type corresponds to a type that
534 * can be executable, %FALSE otherwise.
537 g_content_type_can_be_executable (const gchar *type)
539 g_return_val_if_fail (type != NULL, FALSE);
541 if (g_content_type_is_a (type, "application/x-executable") ||
542 g_content_type_is_a (type, "text/plain"))
549 looks_like_text (const guchar *data, gsize data_size)
554 for (i = 0; i < data_size; i++)
558 if (g_ascii_iscntrl (c) &&
559 !g_ascii_isspace (c) &&
567 * g_content_type_from_mime_type:
568 * @mime_type: a mime type string
570 * Tries to find a content type based on the mime type name.
572 * Returns: (nullable): Newly allocated string with content type or
573 * %NULL. Free with g_free()
578 g_content_type_from_mime_type (const gchar *mime_type)
582 g_return_val_if_fail (mime_type != NULL, NULL);
584 G_LOCK (gio_xdgmime);
585 /* mime type and content type are same on unixes */
586 umime = g_strdup (xdg_mime_unalias_mime_type (mime_type));
587 G_UNLOCK (gio_xdgmime);
593 * g_content_type_guess:
594 * @filename: (allow-none): a string, or %NULL
595 * @data: (allow-none) (array length=data_size): a stream of data, or %NULL
596 * @data_size: the size of @data
597 * @result_uncertain: (allow-none) (out): return location for the certainty
598 * of the result, or %NULL
600 * Guesses the content type based on example data. If the function is
601 * uncertain, @result_uncertain will be set to %TRUE. Either @filename
602 * or @data may be %NULL, in which case the guess will be based solely
603 * on the other argument.
605 * Returns: a string indicating a guessed content type for the
606 * given data. Free with g_free()
609 g_content_type_guess (const gchar *filename,
612 gboolean *result_uncertain)
615 const char *name_mimetypes[10], *sniffed_mimetype;
618 int n_name_mimetypes;
622 n_name_mimetypes = 0;
623 sniffed_mimetype = XDG_MIME_TYPE_UNKNOWN;
625 if (result_uncertain)
626 *result_uncertain = FALSE;
628 /* our test suite and potentially other code used -1 in the past, which is
629 * not documented and not allowed; guard against that */
630 g_return_val_if_fail (data_size != (gsize) -1, g_strdup (XDG_MIME_TYPE_UNKNOWN));
632 G_LOCK (gio_xdgmime);
636 i = strlen (filename);
637 if (filename[i - 1] == '/')
639 name_mimetypes[0] = "inode/directory";
640 name_mimetypes[1] = NULL;
641 n_name_mimetypes = 1;
642 if (result_uncertain)
643 *result_uncertain = TRUE;
647 basename = g_path_get_basename (filename);
648 n_name_mimetypes = xdg_mime_get_mime_types_from_file_name (basename, name_mimetypes, 10);
653 /* Got an extension match, and no conflicts. This is it. */
654 if (n_name_mimetypes == 1)
656 gchar *s = g_strdup (name_mimetypes[0]);
657 G_UNLOCK (gio_xdgmime);
663 sniffed_mimetype = xdg_mime_get_mime_type_for_data (data, data_size, &sniffed_prio);
664 if (sniffed_mimetype == XDG_MIME_TYPE_UNKNOWN &&
666 looks_like_text (data, data_size))
667 sniffed_mimetype = "text/plain";
669 /* For security reasons we don't ever want to sniff desktop files
670 * where we know the filename and it doesn't have a .desktop extension.
671 * This is because desktop files allow executing any application and
672 * we don't want to make it possible to hide them looking like something
675 if (filename != NULL &&
676 strcmp (sniffed_mimetype, "application/x-desktop") == 0)
677 sniffed_mimetype = "text/plain";
680 if (n_name_mimetypes == 0)
682 if (sniffed_mimetype == XDG_MIME_TYPE_UNKNOWN &&
684 *result_uncertain = TRUE;
686 mimetype = g_strdup (sniffed_mimetype);
691 if (sniffed_mimetype != XDG_MIME_TYPE_UNKNOWN)
693 if (sniffed_prio >= 80) /* High priority sniffing match, use that */
694 mimetype = g_strdup (sniffed_mimetype);
697 /* There are conflicts between the name matches and we
698 * have a sniffed type, use that as a tie breaker.
700 for (i = 0; i < n_name_mimetypes; i++)
702 if ( xdg_mime_mime_type_subclass (name_mimetypes[i], sniffed_mimetype))
704 /* This nametype match is derived from (or the same as)
705 * the sniffed type). This is probably it.
707 mimetype = g_strdup (name_mimetypes[i]);
714 if (mimetype == NULL)
716 /* Conflicts, and sniffed type was no help or not there.
717 * Guess on the first one
719 mimetype = g_strdup (name_mimetypes[0]);
720 if (result_uncertain)
721 *result_uncertain = TRUE;
725 G_UNLOCK (gio_xdgmime);
731 enumerate_mimetypes_subdir (const char *dir,
733 GHashTable *mimetypes)
742 while ((ent = readdir (d)) != NULL)
744 if (g_str_has_suffix (ent->d_name, ".xml"))
746 mimetype = g_strdup_printf ("%s/%.*s", prefix, (int) strlen (ent->d_name) - 4, ent->d_name);
747 g_hash_table_replace (mimetypes, mimetype, NULL);
755 enumerate_mimetypes_dir (const char *dir,
756 GHashTable *mimetypes)
763 mimedir = g_build_filename (dir, "mime", NULL);
765 d = opendir (mimedir);
768 while ((ent = readdir (d)) != NULL)
770 if (strcmp (ent->d_name, "packages") != 0)
772 name = g_build_filename (mimedir, ent->d_name, NULL);
773 if (g_file_test (name, G_FILE_TEST_IS_DIR))
774 enumerate_mimetypes_subdir (name, ent->d_name, mimetypes);
785 * g_content_types_get_registered:
787 * Gets a list of strings containing all the registered content types
788 * known to the system. The list and its data should be freed using
789 * g_list_free_full (list, g_free).
791 * Returns: (element-type utf8) (transfer full): list of the registered
795 g_content_types_get_registered (void)
797 const char * const* dirs;
798 GHashTable *mimetypes;
804 mimetypes = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
806 enumerate_mimetypes_dir (g_get_user_data_dir (), mimetypes);
807 dirs = g_get_system_data_dirs ();
809 for (i = 0; dirs[i] != NULL; i++)
810 enumerate_mimetypes_dir (dirs[i], mimetypes);
813 g_hash_table_iter_init (&iter, mimetypes);
814 while (g_hash_table_iter_next (&iter, &key, NULL))
816 l = g_list_prepend (l, key);
817 g_hash_table_iter_steal (&iter);
820 g_hash_table_destroy (mimetypes);
826 /* tree magic data */
827 static GList *tree_matches = NULL;
828 static gboolean need_reload = FALSE;
830 G_LOCK_DEFINE_STATIC (gio_treemagic);
836 guint match_case : 1;
837 guint executable : 1;
853 tree_matchlet_free (TreeMatchlet *matchlet)
855 g_list_free_full (matchlet->matches, (GDestroyNotify) tree_matchlet_free);
856 g_free (matchlet->path);
857 g_free (matchlet->mimetype);
858 g_slice_free (TreeMatchlet, matchlet);
862 tree_match_free (TreeMatch *match)
864 g_list_free_full (match->matches, (GDestroyNotify) tree_matchlet_free);
865 g_free (match->contenttype);
866 g_slice_free (TreeMatch, match);
870 parse_header (gchar *line)
878 if (line[0] != '[' || line[len - 1] != ']')
882 s = strchr (line, ':');
884 match = g_slice_new0 (TreeMatch);
885 match->priority = atoi (line + 1);
886 match->contenttype = g_strdup (s + 1);
891 static TreeMatchlet *
892 parse_match_line (gchar *line,
896 TreeMatchlet *matchlet;
900 matchlet = g_slice_new0 (TreeMatchlet);
909 *depth = atoi (line);
910 s = strchr (line, '>');
916 matchlet->path = g_strdup (s);
918 parts = g_strsplit (s, ",", 0);
919 if (strcmp (parts[0], "=file") == 0)
920 matchlet->type = G_FILE_TYPE_REGULAR;
921 else if (strcmp (parts[0], "=directory") == 0)
922 matchlet->type = G_FILE_TYPE_DIRECTORY;
923 else if (strcmp (parts[0], "=link") == 0)
924 matchlet->type = G_FILE_TYPE_SYMBOLIC_LINK;
926 matchlet->type = G_FILE_TYPE_UNKNOWN;
927 for (i = 1; parts[i]; i++)
929 if (strcmp (parts[i], "executable") == 0)
930 matchlet->executable = 1;
931 else if (strcmp (parts[i], "match-case") == 0)
932 matchlet->match_case = 1;
933 else if (strcmp (parts[i], "non-empty") == 0)
934 matchlet->non_empty = 1;
935 else if (strcmp (parts[i], "on-disc") == 0)
936 matchlet->on_disc = 1;
938 matchlet->mimetype = g_strdup (parts[i]);
947 cmp_match (gconstpointer a, gconstpointer b)
949 const TreeMatch *aa = (const TreeMatch *)a;
950 const TreeMatch *bb = (const TreeMatch *)b;
952 return bb->priority - aa->priority;
956 insert_match (TreeMatch *match)
958 tree_matches = g_list_insert_sorted (tree_matches, match, cmp_match);
962 insert_matchlet (TreeMatch *match,
963 TreeMatchlet *matchlet,
967 match->matches = g_list_append (match->matches, matchlet);
973 last = g_list_last (match->matches);
976 tree_matchlet_free (matchlet);
977 g_warning ("can't insert tree matchlet at depth %d", depth);
981 m = (TreeMatchlet *) last->data;
984 last = g_list_last (m->matches);
987 tree_matchlet_free (matchlet);
988 g_warning ("can't insert tree matchlet at depth %d", depth);
992 m = (TreeMatchlet *) last->data;
994 m->matches = g_list_append (m->matches, matchlet);
999 read_tree_magic_from_directory (const gchar *prefix)
1007 TreeMatchlet *matchlet;
1010 filename = g_build_filename (prefix, "mime", "treemagic", NULL);
1012 if (g_file_get_contents (filename, &text, &len, NULL))
1014 if (strcmp (text, "MIME-TreeMagic") == 0)
1016 lines = g_strsplit (text + strlen ("MIME-TreeMagic") + 2, "\n", 0);
1018 for (i = 0; lines[i] && lines[i][0]; i++)
1020 if (lines[i][0] == '[')
1022 match = parse_header (lines[i]);
1023 insert_match (match);
1025 else if (match != NULL)
1027 matchlet = parse_match_line (lines[i], &depth);
1028 insert_matchlet (match, matchlet, depth);
1032 g_warning ("%s: header corrupt; skipping\n", filename);
1040 g_warning ("%s: header not found, skipping\n", filename);
1050 xdg_mime_reload (void *user_data)
1056 tree_magic_shutdown (void)
1058 g_list_free_full (tree_matches, (GDestroyNotify) tree_match_free);
1059 tree_matches = NULL;
1063 tree_magic_init (void)
1065 static gboolean initialized = FALSE;
1067 const gchar * const * dirs;
1074 xdg_mime_register_reload_callback (xdg_mime_reload, NULL, NULL);
1080 need_reload = FALSE;
1082 tree_magic_shutdown ();
1084 dir = g_get_user_data_dir ();
1085 read_tree_magic_from_directory (dir);
1086 dirs = g_get_system_data_dirs ();
1087 for (i = 0; dirs[i]; i++)
1088 read_tree_magic_from_directory (dirs[i]);
1092 /* a filtering enumerator */
1098 gboolean ignore_case;
1100 gchar **case_components;
1101 GFileEnumerator **enumerators;
1106 component_match (Enumerator *e,
1110 gchar *case_folded, *key;
1113 if (strcmp (name, e->components[depth]) == 0)
1116 if (!e->ignore_case)
1119 case_folded = g_utf8_casefold (name, -1);
1120 key = g_utf8_collate_key (case_folded, -1);
1122 found = strcmp (key, e->case_components[depth]) == 0;
1124 g_free (case_folded);
1131 next_match_recurse (Enumerator *e,
1140 if (e->enumerators[depth] == NULL)
1144 file = next_match_recurse (e, depth - 1);
1147 e->children[depth] = file;
1148 e->enumerators[depth] = g_file_enumerate_children (file,
1149 G_FILE_ATTRIBUTE_STANDARD_NAME,
1150 G_FILE_QUERY_INFO_NONE,
1155 if (e->enumerators[depth] == NULL)
1159 while ((info = g_file_enumerator_next_file (e->enumerators[depth], NULL, NULL)))
1161 name = g_file_info_get_name (info);
1162 if (component_match (e, depth, name))
1164 file = g_file_get_child (e->children[depth], name);
1165 g_object_unref (info);
1168 g_object_unref (info);
1171 g_object_unref (e->enumerators[depth]);
1172 e->enumerators[depth] = NULL;
1173 g_object_unref (e->children[depth]);
1174 e->children[depth] = NULL;
1179 enumerator_next (Enumerator *e)
1181 return next_match_recurse (e, e->depth - 1);
1185 enumerator_new (GFile *root,
1187 gboolean ignore_case)
1193 e = g_new0 (Enumerator, 1);
1194 e->path = g_strdup (path);
1195 e->ignore_case = ignore_case;
1197 e->components = g_strsplit (e->path, G_DIR_SEPARATOR_S, -1);
1198 e->depth = g_strv_length (e->components);
1201 e->case_components = g_new0 (char *, e->depth + 1);
1202 for (i = 0; e->components[i]; i++)
1204 case_folded = g_utf8_casefold (e->components[i], -1);
1205 e->case_components[i] = g_utf8_collate_key (case_folded, -1);
1206 g_free (case_folded);
1210 e->children = g_new0 (GFile *, e->depth);
1211 e->children[0] = g_object_ref (root);
1212 e->enumerators = g_new0 (GFileEnumerator *, e->depth);
1213 e->enumerators[0] = g_file_enumerate_children (root,
1214 G_FILE_ATTRIBUTE_STANDARD_NAME,
1215 G_FILE_QUERY_INFO_NONE,
1223 enumerator_free (Enumerator *e)
1227 for (i = 0; i < e->depth; i++)
1229 if (e->enumerators[i])
1230 g_object_unref (e->enumerators[i]);
1232 g_object_unref (e->children[i]);
1235 g_free (e->enumerators);
1236 g_free (e->children);
1237 g_strfreev (e->components);
1238 if (e->case_components)
1239 g_strfreev (e->case_components);
1245 matchlet_match (TreeMatchlet *matchlet,
1255 e = enumerator_new (root, matchlet->path, !matchlet->match_case);
1259 file = enumerator_next (e);
1262 enumerator_free (e);
1266 if (matchlet->mimetype)
1267 attrs = G_FILE_ATTRIBUTE_STANDARD_TYPE ","
1268 G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE ","
1269 G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE;
1271 attrs = G_FILE_ATTRIBUTE_STANDARD_TYPE ","
1272 G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE;
1273 info = g_file_query_info (file,
1275 G_FILE_QUERY_INFO_NONE,
1282 if (matchlet->type != G_FILE_TYPE_UNKNOWN &&
1283 g_file_info_get_file_type (info) != matchlet->type)
1286 if (matchlet->executable &&
1287 !g_file_info_get_attribute_boolean (info, G_FILE_ATTRIBUTE_ACCESS_CAN_EXECUTE))
1293 if (result && matchlet->non_empty)
1295 GFileEnumerator *child_enum;
1296 GFileInfo *child_info;
1298 child_enum = g_file_enumerate_children (file,
1299 G_FILE_ATTRIBUTE_STANDARD_NAME,
1300 G_FILE_QUERY_INFO_NONE,
1306 child_info = g_file_enumerator_next_file (child_enum, NULL, NULL);
1308 g_object_unref (child_info);
1311 g_object_unref (child_enum);
1317 if (result && matchlet->mimetype)
1319 if (strcmp (matchlet->mimetype, g_file_info_get_content_type (info)) != 0)
1324 g_object_unref (info);
1325 g_object_unref (file);
1329 enumerator_free (e);
1331 if (!matchlet->matches)
1334 for (l = matchlet->matches; l; l = l->next)
1336 TreeMatchlet *submatchlet;
1338 submatchlet = l->data;
1339 if (matchlet_match (submatchlet, root))
1347 match_match (TreeMatch *match,
1353 for (l = match->matches; l; l = l->next)
1355 TreeMatchlet *matchlet = l->data;
1356 if (matchlet_match (matchlet, root))
1358 g_ptr_array_add (types, g_strdup (match->contenttype));
1365 * g_content_type_guess_for_tree:
1366 * @root: the root of the tree to guess a type for
1368 * Tries to guess the type of the tree with root @root, by
1369 * looking at the files it contains. The result is an array
1370 * of content types, with the best guess coming first.
1372 * The types returned all have the form x-content/foo, e.g.
1373 * x-content/audio-cdda (for audio CDs) or x-content/image-dcf
1374 * (for a camera memory card). See the
1375 * [shared-mime-info](http://www.freedesktop.org/wiki/Specifications/shared-mime-info-spec)
1376 * specification for more on x-content types.
1378 * This function is useful in the implementation of
1379 * g_mount_guess_content_type().
1381 * Returns: (transfer full) (array zero-terminated=1): an %NULL-terminated
1382 * array of zero or more content types. Free with g_strfreev()
1387 g_content_type_guess_for_tree (GFile *root)
1392 types = g_ptr_array_new ();
1394 G_LOCK (gio_treemagic);
1397 for (l = tree_matches; l; l = l->next)
1399 TreeMatch *match = l->data;
1400 match_match (match, root, types);
1403 G_UNLOCK (gio_treemagic);
1405 g_ptr_array_add (types, NULL);
1407 return (gchar **)g_ptr_array_free (types, FALSE);