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-rw-r--r--base/third_party/xdg_mime/xdgmime.c926
1 files changed, 926 insertions, 0 deletions
diff --git a/base/third_party/xdg_mime/xdgmime.c b/base/third_party/xdg_mime/xdgmime.c
new file mode 100644
index 0000000..c9bcfba
--- /dev/null
+++ b/base/third_party/xdg_mime/xdgmime.c
@@ -0,0 +1,926 @@
+/* -*- mode: C; c-file-style: "gnu" -*- */
+/* xdgmime.c: XDG Mime Spec mime resolver. Based on version 0.11 of the spec.
+ *
+ * More info can be found at http://www.freedesktop.org/standards/
+ *
+ * Copyright (C) 2003,2004 Red Hat, Inc.
+ * Copyright (C) 2003,2004 Jonathan Blandford <jrb@alum.mit.edu>
+ *
+ * Licensed under the Academic Free License version 2.0
+ * Or under the following terms:
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "xdgmime.h"
+#include "xdgmimeint.h"
+#include "xdgmimeglob.h"
+#include "xdgmimemagic.h"
+#include "xdgmimealias.h"
+#include "xdgmimeicon.h"
+#include "xdgmimeparent.h"
+#include "xdgmimecache.h"
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <unistd.h>
+#include <assert.h>
+
+typedef struct XdgDirTimeList XdgDirTimeList;
+typedef struct XdgCallbackList XdgCallbackList;
+
+static int need_reread = TRUE;
+static time_t last_stat_time = 0;
+
+static XdgGlobHash *global_hash = NULL;
+static XdgMimeMagic *global_magic = NULL;
+static XdgAliasList *alias_list = NULL;
+static XdgParentList *parent_list = NULL;
+static XdgDirTimeList *dir_time_list = NULL;
+static XdgCallbackList *callback_list = NULL;
+static XdgIconList *icon_list = NULL;
+static XdgIconList *generic_icon_list = NULL;
+
+XdgMimeCache **_caches = NULL;
+static int n_caches = 0;
+
+const char xdg_mime_type_unknown[] = "application/octet-stream";
+
+
+enum
+{
+ XDG_CHECKED_UNCHECKED,
+ XDG_CHECKED_VALID,
+ XDG_CHECKED_INVALID
+};
+
+struct XdgDirTimeList
+{
+ time_t mtime;
+ char *directory_name;
+ int checked;
+ XdgDirTimeList *next;
+};
+
+struct XdgCallbackList
+{
+ XdgCallbackList *next;
+ XdgCallbackList *prev;
+ int callback_id;
+ XdgMimeCallback callback;
+ void *data;
+ XdgMimeDestroy destroy;
+};
+
+/* Function called by xdg_run_command_on_dirs. If it returns TRUE, further
+ * directories aren't looked at */
+typedef int (*XdgDirectoryFunc) (const char *directory,
+ void *user_data);
+
+static void
+xdg_dir_time_list_add (char *file_name,
+ time_t mtime)
+{
+ XdgDirTimeList *list;
+
+ for (list = dir_time_list; list; list = list->next)
+ {
+ if (strcmp (list->directory_name, file_name) == 0)
+ {
+ free (file_name);
+ return;
+ }
+ }
+
+ list = calloc (1, sizeof (XdgDirTimeList));
+ list->checked = XDG_CHECKED_UNCHECKED;
+ list->directory_name = file_name;
+ list->mtime = mtime;
+ list->next = dir_time_list;
+ dir_time_list = list;
+}
+
+static void
+xdg_dir_time_list_free (XdgDirTimeList *list)
+{
+ XdgDirTimeList *next;
+
+ while (list)
+ {
+ next = list->next;
+ free (list->directory_name);
+ free (list);
+ list = next;
+ }
+}
+
+static int
+xdg_mime_init_from_directory (const char *directory)
+{
+ char *file_name;
+ struct stat st;
+
+ assert (directory != NULL);
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/mime.cache") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/mime.cache");
+ if (stat (file_name, &st) == 0)
+ {
+ XdgMimeCache *cache = _xdg_mime_cache_new_from_file (file_name);
+
+ if (cache != NULL)
+ {
+ xdg_dir_time_list_add (file_name, st.st_mtime);
+
+ _caches = realloc (_caches, sizeof (XdgMimeCache *) * (n_caches + 2));
+ _caches[n_caches] = cache;
+ _caches[n_caches + 1] = NULL;
+ n_caches++;
+
+ return FALSE;
+ }
+ }
+ free (file_name);
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/globs2") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/globs2");
+ if (stat (file_name, &st) == 0)
+ {
+ _xdg_mime_glob_read_from_file (global_hash, file_name);
+ xdg_dir_time_list_add (file_name, st.st_mtime);
+ }
+ else
+ {
+ free (file_name);
+ file_name = malloc (strlen (directory) + strlen ("/mime/globs") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/globs");
+ if (stat (file_name, &st) == 0)
+ {
+ _xdg_mime_glob_read_from_file (global_hash, file_name);
+ xdg_dir_time_list_add (file_name, st.st_mtime);
+ }
+ else
+ {
+ free (file_name);
+ }
+ }
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/magic") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/magic");
+ if (stat (file_name, &st) == 0)
+ {
+ _xdg_mime_magic_read_from_file (global_magic, file_name);
+ xdg_dir_time_list_add (file_name, st.st_mtime);
+ }
+ else
+ {
+ free (file_name);
+ }
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/aliases") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/aliases");
+ _xdg_mime_alias_read_from_file (alias_list, file_name);
+ free (file_name);
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/subclasses") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/subclasses");
+ _xdg_mime_parent_read_from_file (parent_list, file_name);
+ free (file_name);
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/icons") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/icons");
+ _xdg_mime_icon_read_from_file (icon_list, file_name);
+ free (file_name);
+
+ file_name = malloc (strlen (directory) + strlen ("/mime/generic-icons") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/generic-icons");
+ _xdg_mime_icon_read_from_file (generic_icon_list, file_name);
+ free (file_name);
+
+ return FALSE; /* Keep processing */
+}
+
+/* Runs a command on all the directories in the search path */
+static void
+xdg_run_command_on_dirs (XdgDirectoryFunc func,
+ void *user_data)
+{
+ const char *xdg_data_home;
+ const char *xdg_data_dirs;
+ const char *ptr;
+
+ xdg_data_home = getenv ("XDG_DATA_HOME");
+ if (xdg_data_home)
+ {
+ if ((func) (xdg_data_home, user_data))
+ return;
+ }
+ else
+ {
+ const char *home;
+
+ home = getenv ("HOME");
+ if (home != NULL)
+ {
+ char *guessed_xdg_home;
+ int stop_processing;
+
+ guessed_xdg_home = malloc (strlen (home) + strlen ("/.local/share/") + 1);
+ strcpy (guessed_xdg_home, home);
+ strcat (guessed_xdg_home, "/.local/share/");
+ stop_processing = (func) (guessed_xdg_home, user_data);
+ free (guessed_xdg_home);
+
+ if (stop_processing)
+ return;
+ }
+ }
+
+ xdg_data_dirs = getenv ("XDG_DATA_DIRS");
+ if (xdg_data_dirs == NULL)
+ xdg_data_dirs = "/usr/local/share/:/usr/share/";
+
+ ptr = xdg_data_dirs;
+
+ while (*ptr != '\000')
+ {
+ const char *end_ptr;
+ char *dir;
+ int len;
+ int stop_processing;
+
+ end_ptr = ptr;
+ while (*end_ptr != ':' && *end_ptr != '\000')
+ end_ptr ++;
+
+ if (end_ptr == ptr)
+ {
+ ptr++;
+ continue;
+ }
+
+ if (*end_ptr == ':')
+ len = end_ptr - ptr;
+ else
+ len = end_ptr - ptr + 1;
+ dir = malloc (len + 1);
+ strncpy (dir, ptr, len);
+ dir[len] = '\0';
+ stop_processing = (func) (dir, user_data);
+ free (dir);
+
+ if (stop_processing)
+ return;
+
+ ptr = end_ptr;
+ }
+}
+
+/* Checks file_path to make sure it has the same mtime as last time it was
+ * checked. If it has a different mtime, or if the file doesn't exist, it
+ * returns FALSE.
+ *
+ * FIXME: This doesn't protect against permission changes.
+ */
+static int
+xdg_check_file (const char *file_path,
+ int *exists)
+{
+ struct stat st;
+
+ /* If the file exists */
+ if (stat (file_path, &st) == 0)
+ {
+ XdgDirTimeList *list;
+
+ if (exists)
+ *exists = TRUE;
+
+ for (list = dir_time_list; list; list = list->next)
+ {
+ if (! strcmp (list->directory_name, file_path))
+ {
+ if (st.st_mtime == list->mtime)
+ list->checked = XDG_CHECKED_VALID;
+ else
+ list->checked = XDG_CHECKED_INVALID;
+
+ return (list->checked != XDG_CHECKED_VALID);
+ }
+ }
+ return TRUE;
+ }
+
+ if (exists)
+ *exists = FALSE;
+
+ return FALSE;
+}
+
+static int
+xdg_check_dir (const char *directory,
+ int *invalid_dir_list)
+{
+ int invalid, exists;
+ char *file_name;
+
+ assert (directory != NULL);
+
+ /* Check the mime.cache file */
+ file_name = malloc (strlen (directory) + strlen ("/mime/mime.cache") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/mime.cache");
+ invalid = xdg_check_file (file_name, &exists);
+ free (file_name);
+ if (invalid)
+ {
+ *invalid_dir_list = TRUE;
+ return TRUE;
+ }
+ else if (exists)
+ {
+ return FALSE;
+ }
+
+ /* Check the globs file */
+ file_name = malloc (strlen (directory) + strlen ("/mime/globs") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/globs");
+ invalid = xdg_check_file (file_name, NULL);
+ free (file_name);
+ if (invalid)
+ {
+ *invalid_dir_list = TRUE;
+ return TRUE;
+ }
+
+ /* Check the magic file */
+ file_name = malloc (strlen (directory) + strlen ("/mime/magic") + 1);
+ strcpy (file_name, directory); strcat (file_name, "/mime/magic");
+ invalid = xdg_check_file (file_name, NULL);
+ free (file_name);
+ if (invalid)
+ {
+ *invalid_dir_list = TRUE;
+ return TRUE;
+ }
+
+ return FALSE; /* Keep processing */
+}
+
+/* Walks through all the mime files stat()ing them to see if they've changed.
+ * Returns TRUE if they have. */
+static int
+xdg_check_dirs (void)
+{
+ XdgDirTimeList *list;
+ int invalid_dir_list = FALSE;
+
+ for (list = dir_time_list; list; list = list->next)
+ list->checked = XDG_CHECKED_UNCHECKED;
+
+ xdg_run_command_on_dirs ((XdgDirectoryFunc) xdg_check_dir,
+ &invalid_dir_list);
+
+ if (invalid_dir_list)
+ return TRUE;
+
+ for (list = dir_time_list; list; list = list->next)
+ {
+ if (list->checked != XDG_CHECKED_VALID)
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+/* We want to avoid stat()ing on every single mime call, so we only look for
+ * newer files every 5 seconds. This will return TRUE if we need to reread the
+ * mime data from disk.
+ */
+static int
+xdg_check_time_and_dirs (void)
+{
+ struct timeval tv;
+ time_t current_time;
+ int retval = FALSE;
+
+ gettimeofday (&tv, NULL);
+ current_time = tv.tv_sec;
+
+ if (current_time >= last_stat_time + 5)
+ {
+ retval = xdg_check_dirs ();
+ last_stat_time = current_time;
+ }
+
+ return retval;
+}
+
+/* Called in every public function. It reloads the hash function if need be.
+ */
+static void
+xdg_mime_init (void)
+{
+ if (xdg_check_time_and_dirs ())
+ {
+ xdg_mime_shutdown ();
+ }
+
+ if (need_reread)
+ {
+ global_hash = _xdg_glob_hash_new ();
+ global_magic = _xdg_mime_magic_new ();
+ alias_list = _xdg_mime_alias_list_new ();
+ parent_list = _xdg_mime_parent_list_new ();
+ icon_list = _xdg_mime_icon_list_new ();
+ generic_icon_list = _xdg_mime_icon_list_new ();
+
+ xdg_run_command_on_dirs ((XdgDirectoryFunc) xdg_mime_init_from_directory,
+ NULL);
+
+ need_reread = FALSE;
+ }
+}
+
+const char *
+xdg_mime_get_mime_type_for_data (const void *data,
+ size_t len,
+ int *result_prio)
+{
+ const char *mime_type;
+
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_mime_type_for_data (data, len, result_prio);
+
+ mime_type = _xdg_mime_magic_lookup_data (global_magic, data, len, result_prio, NULL, 0);
+
+ if (mime_type)
+ return mime_type;
+
+ return XDG_MIME_TYPE_UNKNOWN;
+}
+
+const char *
+xdg_mime_get_mime_type_for_file (const char *file_name,
+ struct stat *statbuf)
+{
+ const char *mime_type;
+ /* currently, only a few globs occur twice, and none
+ * more often, so 5 seems plenty.
+ */
+ const char *mime_types[5];
+ FILE *file;
+ unsigned char *data;
+ int max_extent;
+ int bytes_read;
+ struct stat buf;
+ const char *base_name;
+ int n;
+
+ if (file_name == NULL)
+ return NULL;
+ if (! _xdg_utf8_validate (file_name))
+ return NULL;
+
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_mime_type_for_file (file_name, statbuf);
+
+ base_name = _xdg_get_base_name (file_name);
+ n = _xdg_glob_hash_lookup_file_name (global_hash, base_name, mime_types, 5);
+
+ if (n == 1)
+ return mime_types[0];
+
+ if (!statbuf)
+ {
+ if (stat (file_name, &buf) != 0)
+ return XDG_MIME_TYPE_UNKNOWN;
+
+ statbuf = &buf;
+ }
+
+ if (!S_ISREG (statbuf->st_mode))
+ return XDG_MIME_TYPE_UNKNOWN;
+
+ /* FIXME: Need to make sure that max_extent isn't totally broken. This could
+ * be large and need getting from a stream instead of just reading it all
+ * in. */
+ max_extent = _xdg_mime_magic_get_buffer_extents (global_magic);
+ data = malloc (max_extent);
+ if (data == NULL)
+ return XDG_MIME_TYPE_UNKNOWN;
+
+ file = fopen (file_name, "r");
+ if (file == NULL)
+ {
+ free (data);
+ return XDG_MIME_TYPE_UNKNOWN;
+ }
+
+ bytes_read = fread (data, 1, max_extent, file);
+ if (ferror (file))
+ {
+ free (data);
+ fclose (file);
+ return XDG_MIME_TYPE_UNKNOWN;
+ }
+
+ mime_type = _xdg_mime_magic_lookup_data (global_magic, data, bytes_read, NULL,
+ mime_types, n);
+
+ free (data);
+ fclose (file);
+
+ if (mime_type)
+ return mime_type;
+
+ return XDG_MIME_TYPE_UNKNOWN;
+}
+
+const char *
+xdg_mime_get_mime_type_from_file_name (const char *file_name)
+{
+ const char *mime_type;
+
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_mime_type_from_file_name (file_name);
+
+ if (_xdg_glob_hash_lookup_file_name (global_hash, file_name, &mime_type, 1))
+ return mime_type;
+ else
+ return XDG_MIME_TYPE_UNKNOWN;
+}
+
+int
+xdg_mime_get_mime_types_from_file_name (const char *file_name,
+ const char *mime_types[],
+ int n_mime_types)
+{
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_mime_types_from_file_name (file_name, mime_types, n_mime_types);
+
+ return _xdg_glob_hash_lookup_file_name (global_hash, file_name, mime_types, n_mime_types);
+}
+
+int
+xdg_mime_is_valid_mime_type (const char *mime_type)
+{
+ /* FIXME: We should make this a better test
+ */
+ return _xdg_utf8_validate (mime_type);
+}
+
+void
+xdg_mime_shutdown (void)
+{
+ XdgCallbackList *list;
+
+ /* FIXME: Need to make this (and the whole library) thread safe */
+ if (dir_time_list)
+ {
+ xdg_dir_time_list_free (dir_time_list);
+ dir_time_list = NULL;
+ }
+
+ if (global_hash)
+ {
+ _xdg_glob_hash_free (global_hash);
+ global_hash = NULL;
+ }
+ if (global_magic)
+ {
+ _xdg_mime_magic_free (global_magic);
+ global_magic = NULL;
+ }
+
+ if (alias_list)
+ {
+ _xdg_mime_alias_list_free (alias_list);
+ alias_list = NULL;
+ }
+
+ if (parent_list)
+ {
+ _xdg_mime_parent_list_free (parent_list);
+ parent_list = NULL;
+ }
+
+ if (icon_list)
+ {
+ _xdg_mime_icon_list_free (icon_list);
+ icon_list = NULL;
+ }
+
+ if (generic_icon_list)
+ {
+ _xdg_mime_icon_list_free (generic_icon_list);
+ generic_icon_list = NULL;
+ }
+
+ if (_caches)
+ {
+ int i;
+
+ for (i = 0; i < n_caches; i++)
+ _xdg_mime_cache_unref (_caches[i]);
+ free (_caches);
+ _caches = NULL;
+ n_caches = 0;
+ }
+
+ for (list = callback_list; list; list = list->next)
+ (list->callback) (list->data);
+
+ need_reread = TRUE;
+}
+
+int
+xdg_mime_get_max_buffer_extents (void)
+{
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_max_buffer_extents ();
+
+ return _xdg_mime_magic_get_buffer_extents (global_magic);
+}
+
+const char *
+_xdg_mime_unalias_mime_type (const char *mime_type)
+{
+ const char *lookup;
+
+ if (_caches)
+ return _xdg_mime_cache_unalias_mime_type (mime_type);
+
+ if ((lookup = _xdg_mime_alias_list_lookup (alias_list, mime_type)) != NULL)
+ return lookup;
+
+ return mime_type;
+}
+
+const char *
+xdg_mime_unalias_mime_type (const char *mime_type)
+{
+ xdg_mime_init ();
+
+ return _xdg_mime_unalias_mime_type (mime_type);
+}
+
+int
+_xdg_mime_mime_type_equal (const char *mime_a,
+ const char *mime_b)
+{
+ const char *unalias_a, *unalias_b;
+
+ unalias_a = _xdg_mime_unalias_mime_type (mime_a);
+ unalias_b = _xdg_mime_unalias_mime_type (mime_b);
+
+ if (strcmp (unalias_a, unalias_b) == 0)
+ return 1;
+
+ return 0;
+}
+
+int
+xdg_mime_mime_type_equal (const char *mime_a,
+ const char *mime_b)
+{
+ xdg_mime_init ();
+
+ return _xdg_mime_mime_type_equal (mime_a, mime_b);
+}
+
+int
+xdg_mime_media_type_equal (const char *mime_a,
+ const char *mime_b)
+{
+ char *sep;
+
+ sep = strchr (mime_a, '/');
+
+ if (sep && strncmp (mime_a, mime_b, sep - mime_a + 1) == 0)
+ return 1;
+
+ return 0;
+}
+
+#if 1
+static int
+xdg_mime_is_super_type (const char *mime)
+{
+ int length;
+ const char *type;
+
+ length = strlen (mime);
+ type = &(mime[length - 2]);
+
+ if (strcmp (type, "/*") == 0)
+ return 1;
+
+ return 0;
+}
+#endif
+
+int
+_xdg_mime_mime_type_subclass (const char *mime,
+ const char *base)
+{
+ const char *umime, *ubase;
+ const char **parents;
+
+ if (_caches)
+ return _xdg_mime_cache_mime_type_subclass (mime, base);
+
+ umime = _xdg_mime_unalias_mime_type (mime);
+ ubase = _xdg_mime_unalias_mime_type (base);
+
+ if (strcmp (umime, ubase) == 0)
+ return 1;
+
+#if 1
+ /* Handle supertypes */
+ if (xdg_mime_is_super_type (ubase) &&
+ xdg_mime_media_type_equal (umime, ubase))
+ return 1;
+#endif
+
+ /* Handle special cases text/plain and application/octet-stream */
+ if (strcmp (ubase, "text/plain") == 0 &&
+ strncmp (umime, "text/", 5) == 0)
+ return 1;
+
+ if (strcmp (ubase, "application/octet-stream") == 0)
+ return 1;
+
+ parents = _xdg_mime_parent_list_lookup (parent_list, umime);
+ for (; parents && *parents; parents++)
+ {
+ if (_xdg_mime_mime_type_subclass (*parents, ubase))
+ return 1;
+ }
+
+ return 0;
+}
+
+int
+xdg_mime_mime_type_subclass (const char *mime,
+ const char *base)
+{
+ xdg_mime_init ();
+
+ return _xdg_mime_mime_type_subclass (mime, base);
+}
+
+char **
+xdg_mime_list_mime_parents (const char *mime)
+{
+ const char **parents;
+ char **result;
+ int i, n;
+
+ if (_caches)
+ return _xdg_mime_cache_list_mime_parents (mime);
+
+ parents = xdg_mime_get_mime_parents (mime);
+
+ if (!parents)
+ return NULL;
+
+ for (i = 0; parents[i]; i++) ;
+
+ n = (i + 1) * sizeof (char *);
+ result = (char **) malloc (n);
+ memcpy (result, parents, n);
+
+ return result;
+}
+
+const char **
+xdg_mime_get_mime_parents (const char *mime)
+{
+ const char *umime;
+
+ xdg_mime_init ();
+
+ umime = _xdg_mime_unalias_mime_type (mime);
+
+ return _xdg_mime_parent_list_lookup (parent_list, umime);
+}
+
+void
+xdg_mime_dump (void)
+{
+ xdg_mime_init();
+
+ printf ("*** ALIASES ***\n\n");
+ _xdg_mime_alias_list_dump (alias_list);
+ printf ("\n*** PARENTS ***\n\n");
+ _xdg_mime_parent_list_dump (parent_list);
+ printf ("\n*** CACHE ***\n\n");
+ _xdg_glob_hash_dump (global_hash);
+ printf ("\n*** GLOBS ***\n\n");
+ _xdg_glob_hash_dump (global_hash);
+ printf ("\n*** GLOBS REVERSE TREE ***\n\n");
+ _xdg_mime_cache_glob_dump ();
+}
+
+
+/* Registers a function to be called every time the mime database reloads its files
+ */
+int
+xdg_mime_register_reload_callback (XdgMimeCallback callback,
+ void *data,
+ XdgMimeDestroy destroy)
+{
+ XdgCallbackList *list_el;
+ static int callback_id = 1;
+
+ /* Make a new list element */
+ list_el = calloc (1, sizeof (XdgCallbackList));
+ list_el->callback_id = callback_id;
+ list_el->callback = callback;
+ list_el->data = data;
+ list_el->destroy = destroy;
+ list_el->next = callback_list;
+ if (list_el->next)
+ list_el->next->prev = list_el;
+
+ callback_list = list_el;
+ callback_id ++;
+
+ return callback_id - 1;
+}
+
+void
+xdg_mime_remove_callback (int callback_id)
+{
+ XdgCallbackList *list;
+
+ for (list = callback_list; list; list = list->next)
+ {
+ if (list->callback_id == callback_id)
+ {
+ if (list->next)
+ list->next = list->prev;
+
+ if (list->prev)
+ list->prev->next = list->next;
+ else
+ callback_list = list->next;
+
+ /* invoke the destroy handler */
+ (list->destroy) (list->data);
+ free (list);
+ return;
+ }
+ }
+}
+
+const char *
+xdg_mime_get_icon (const char *mime)
+{
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_icon (mime);
+
+ return _xdg_mime_icon_list_lookup (icon_list, mime);
+}
+
+const char *
+xdg_mime_get_generic_icon (const char *mime)
+{
+ xdg_mime_init ();
+
+ if (_caches)
+ return _xdg_mime_cache_get_generic_icon (mime);
+
+ return _xdg_mime_icon_list_lookup (generic_icon_list, mime);
+}
generated by cgit v1.1 at 2025-01-16 02:16:34 +0000