diff options
Diffstat (limited to 'gst/xdgmime')
| -rw-r--r-- | gst/xdgmime/Makefile.am | 26 | ||||
| -rw-r--r-- | gst/xdgmime/gstxdgmime.c | 68 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmime.c | 885 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmime.h | 127 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimealias.c | 168 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimealias.h | 51 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimecache.c | 936 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimecache.h | 81 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeglob.c | 549 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeglob.h | 68 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeicon.c | 167 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeicon.h | 50 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeint.c | 178 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeint.h | 77 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimemagic.c | 738 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimemagic.h | 57 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeparent.c | 202 | ||||
| -rw-r--r-- | gst/xdgmime/xdgmime/xdgmimeparent.h | 51 |
18 files changed, 4479 insertions, 0 deletions
diff --git a/gst/xdgmime/Makefile.am b/gst/xdgmime/Makefile.am new file mode 100644 index 00000000..768e3f81 --- /dev/null +++ b/gst/xdgmime/Makefile.am @@ -0,0 +1,26 @@ +plugin_LTLIBRARIES = libgstxdgmime.la + +libgstxdgmime_la_SOURCES = gstxdgmime.c \ + xdgmime/xdgmimealias.c \ + xdgmime/xdgmime.c \ + xdgmime/xdgmimecache.c \ + xdgmime/xdgmimeglob.c \ + xdgmime/xdgmimeicon.c \ + xdgmime/xdgmimeint.c \ + xdgmime/xdgmimemagic.c \ + xdgmime/xdgmimeparent.c +libgstxdgmime_la_CFLAGS = $(GST_CFLAGS) -DXDG_PREFIX=gst_xdg_mime +libgstxdgmime_la_LIBADD = $(GST_LIBS) +libgstxdgmime_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) +libgstxdgmime_la_LIBTOOLFLAGS = --tag=disable-static + +noinst_HEADERS = xdgmime/xdgmimealias.h \ + xdgmime/xdgmimecache.h \ + xdgmime/xdgmimeglob.h \ + xdgmime/xdgmime.h \ + xdgmime/xdgmimeicon.h \ + xdgmime/xdgmimeint.h \ + xdgmime/xdgmimemagic.h \ + xdgmime/xdgmimeparent.h + +EXTRA_DIST = diff --git a/gst/xdgmime/gstxdgmime.c b/gst/xdgmime/gstxdgmime.c new file mode 100644 index 00000000..1d7536c3 --- /dev/null +++ b/gst/xdgmime/gstxdgmime.c @@ -0,0 +1,68 @@ +/* GStreamer + * Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library 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 + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library 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 <gst/gst.h> +#include "xdgmime/xdgmime.h" + +GST_DEBUG_CATEGORY (xdgmime_debug); +#define GST_CAT_DEFAULT xdgmime_debug + +static void +xdgmime_typefind (GstTypeFind * find, gpointer user_data) +{ + const gchar *mimetype; + gsize length = 16384; + guint64 tf_length; + gint prio; + guint8 *data; + GstCaps *caps; + + if ((tf_length = gst_type_find_get_length (find)) > 0) + length = MIN (length, tf_length); + + if ((data = gst_type_find_peek (find, 0, length)) == NULL) + return; + + mimetype = xdg_mime_get_mime_type_for_data (data, length, &prio); + if (mimetype == NULL || g_str_equal (mimetype, XDG_MIME_TYPE_UNKNOWN)) + return; + + GST_DEBUG ("Got mimetype '%s' with prio %d", mimetype, prio); + + caps = gst_caps_new_simple (mimetype, NULL); + gst_type_find_suggest (find, GST_TYPE_FIND_LIKELY, caps); +} + +static gboolean +plugin_init (GstPlugin * plugin) +{ + GST_DEBUG_CATEGORY_INIT (xdgmime_debug, "xdgmime", 0, "XDG-MIME"); + + return gst_type_find_register (plugin, + "xdgmime", GST_RANK_MARGINAL, xdgmime_typefind, NULL, NULL, NULL, NULL); +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + "xdgmime", + "XDG-MIME", + plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) diff --git a/gst/xdgmime/xdgmime/xdgmime.c b/gst/xdgmime/xdgmime/xdgmime.c new file mode 100644 index 00000000..72874d26 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmime.c @@ -0,0 +1,885 @@ +/* -*- 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) +{ + const char *icon; + + xdg_mime_init (); + + if (_caches) + return _xdg_mime_cache_get_icon (mime); + + icon = _xdg_mime_icon_list_lookup (icon_list, mime); + + if (!icon) + icon = xdg_mime_get_generic_icon (mime); + + return icon; +} + +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); +} diff --git a/gst/xdgmime/xdgmime/xdgmime.h b/gst/xdgmime/xdgmime/xdgmime.h new file mode 100644 index 00000000..d3031a38 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmime.h @@ -0,0 +1,127 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmime.h: 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 Red Hat, Inc. + * Copyright (C) 2003 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. + */ + + +#ifndef __XDG_MIME_H__ +#define __XDG_MIME_H__ + +#include <stdlib.h> +#include <sys/stat.h> + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +#ifdef XDG_PREFIX +#define XDG_ENTRY(func) _XDG_ENTRY2(XDG_PREFIX,func) +#define _XDG_ENTRY2(prefix,func) _XDG_ENTRY3(prefix,func) +#define _XDG_ENTRY3(prefix,func) prefix##_##func + +#define XDG_RESERVED_ENTRY(func) _XDG_RESERVED_ENTRY2(XDG_PREFIX,func) +#define _XDG_RESERVED_ENTRY2(prefix,func) _XDG_RESERVED_ENTRY3(prefix,func) +#define _XDG_RESERVED_ENTRY3(prefix,func) _##prefix##_##func +#endif + +typedef void (*XdgMimeCallback) (void *user_data); +typedef void (*XdgMimeDestroy) (void *user_data); + + +#ifdef XDG_PREFIX +#define xdg_mime_get_mime_type_for_data XDG_ENTRY(get_mime_type_for_data) +#define xdg_mime_get_mime_type_for_file XDG_ENTRY(get_mime_type_for_file) +#define xdg_mime_get_mime_type_from_file_name XDG_ENTRY(get_mime_type_from_file_name) +#define xdg_mime_get_mime_types_from_file_name XDG_ENTRY(get_mime_types_from_file_name) +#define xdg_mime_is_valid_mime_type XDG_ENTRY(is_valid_mime_type) +#define xdg_mime_mime_type_equal XDG_ENTRY(mime_type_equal) +#define xdg_mime_media_type_equal XDG_ENTRY(media_type_equal) +#define xdg_mime_mime_type_subclass XDG_ENTRY(mime_type_subclass) +#define xdg_mime_get_mime_parents XDG_ENTRY(get_mime_parents) +#define xdg_mime_list_mime_parents XDG_ENTRY(list_mime_parents) +#define xdg_mime_unalias_mime_type XDG_ENTRY(unalias_mime_type) +#define xdg_mime_get_max_buffer_extents XDG_ENTRY(get_max_buffer_extents) +#define xdg_mime_shutdown XDG_ENTRY(shutdown) +#define xdg_mime_dump XDG_ENTRY(dump) +#define xdg_mime_register_reload_callback XDG_ENTRY(register_reload_callback) +#define xdg_mime_remove_callback XDG_ENTRY(remove_callback) +#define xdg_mime_type_unknown XDG_ENTRY(type_unknown) +#define xdg_mime_get_icon XDG_ENTRY(get_icon) +#define xdg_mime_get_generic_icon XDG_ENTRY(get_generic_icon) + +#define _xdg_mime_mime_type_equal XDG_RESERVED_ENTRY(mime_type_equal) +#define _xdg_mime_mime_type_subclass XDG_RESERVED_ENTRY(mime_type_subclass) +#define _xdg_mime_unalias_mime_type XDG_RESERVED_ENTRY(unalias_mime_type) +#endif + +extern const char xdg_mime_type_unknown[]; +#define XDG_MIME_TYPE_UNKNOWN xdg_mime_type_unknown + +const char *xdg_mime_get_mime_type_for_data (const void *data, + size_t len, + int *result_prio); +const char *xdg_mime_get_mime_type_for_file (const char *file_name, + struct stat *statbuf); +const char *xdg_mime_get_mime_type_from_file_name (const char *file_name); +int xdg_mime_get_mime_types_from_file_name(const char *file_name, + const char *mime_types[], + int n_mime_types); +int xdg_mime_is_valid_mime_type (const char *mime_type); +int xdg_mime_mime_type_equal (const char *mime_a, + const char *mime_b); +int xdg_mime_media_type_equal (const char *mime_a, + const char *mime_b); +int xdg_mime_mime_type_subclass (const char *mime_a, + const char *mime_b); + /* xdg_mime_get_mime_parents() is deprecated since it does + * not work correctly with caches. Use xdg_mime_list_parents() + * instead, but notice that that function expects you to free + * the array it returns. + */ +const char **xdg_mime_get_mime_parents (const char *mime); +char ** xdg_mime_list_mime_parents (const char *mime); +const char *xdg_mime_unalias_mime_type (const char *mime); +const char *xdg_mime_get_icon (const char *mime); +const char *xdg_mime_get_generic_icon (const char *mime); +int xdg_mime_get_max_buffer_extents (void); +void xdg_mime_shutdown (void); +void xdg_mime_dump (void); +int xdg_mime_register_reload_callback (XdgMimeCallback callback, + void *data, + XdgMimeDestroy destroy); +void xdg_mime_remove_callback (int callback_id); + + /* Private versions of functions that don't call xdg_mime_init () */ +int _xdg_mime_mime_type_equal (const char *mime_a, + const char *mime_b); +int _xdg_mime_mime_type_subclass (const char *mime, + const char *base); +const char *_xdg_mime_unalias_mime_type (const char *mime); + + +#ifdef __cplusplus +} +#endif /* __cplusplus */ +#endif /* __XDG_MIME_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimealias.c b/gst/xdgmime/xdgmime/xdgmimealias.c new file mode 100644 index 00000000..f37c900d --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimealias.c @@ -0,0 +1,168 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimealias.c: Private file. Datastructure for storing the aliases. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2004 Red Hat, Inc. + * Copyright (C) 2004 Matthias Clasen <mclasen@redhat.com> + * + * 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 "xdgmimealias.h" +#include "xdgmimeint.h" +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include <fnmatch.h> + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +typedef struct XdgAlias XdgAlias; + +struct XdgAlias +{ + char *alias; + char *mime_type; +}; + +struct XdgAliasList +{ + struct XdgAlias *aliases; + int n_aliases; +}; + +XdgAliasList * +_xdg_mime_alias_list_new (void) +{ + XdgAliasList *list; + + list = malloc (sizeof (XdgAliasList)); + + list->aliases = NULL; + list->n_aliases = 0; + + return list; +} + +void +_xdg_mime_alias_list_free (XdgAliasList * list) +{ + int i; + + if (list->aliases) { + for (i = 0; i < list->n_aliases; i++) { + free (list->aliases[i].alias); + free (list->aliases[i].mime_type); + } + free (list->aliases); + } + free (list); +} + +static int +alias_entry_cmp (const void *v1, const void *v2) +{ + return strcmp (((XdgAlias *) v1)->alias, ((XdgAlias *) v2)->alias); +} + +const char * +_xdg_mime_alias_list_lookup (XdgAliasList * list, const char *alias) +{ + XdgAlias *entry; + XdgAlias key; + + if (list->n_aliases > 0) { + key.alias = (char *) alias; + key.mime_type = NULL; + + entry = bsearch (&key, list->aliases, list->n_aliases, + sizeof (XdgAlias), alias_entry_cmp); + if (entry) + return entry->mime_type; + } + + return NULL; +} + +void +_xdg_mime_alias_read_from_file (XdgAliasList * list, const char *file_name) +{ + FILE *file; + char line[255]; + int alloc; + + file = fopen (file_name, "r"); + + if (file == NULL) + return; + + /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars. + * Blah */ + alloc = list->n_aliases + 16; + list->aliases = realloc (list->aliases, alloc * sizeof (XdgAlias)); + while (fgets (line, 255, file) != NULL) { + char *sep; + if (line[0] == '#') + continue; + + sep = strchr (line, ' '); + if (sep == NULL) + continue; + *(sep++) = '\000'; + sep[strlen (sep) - 1] = '\000'; + if (list->n_aliases == alloc) { + alloc <<= 1; + list->aliases = realloc (list->aliases, alloc * sizeof (XdgAlias)); + } + list->aliases[list->n_aliases].alias = strdup (line); + list->aliases[list->n_aliases].mime_type = strdup (sep); + list->n_aliases++; + } + list->aliases = realloc (list->aliases, list->n_aliases * sizeof (XdgAlias)); + + fclose (file); + + if (list->n_aliases > 1) + qsort (list->aliases, list->n_aliases, sizeof (XdgAlias), alias_entry_cmp); +} + + +void +_xdg_mime_alias_list_dump (XdgAliasList * list) +{ + int i; + + if (list->aliases) { + for (i = 0; i < list->n_aliases; i++) { + printf ("%s %s\n", list->aliases[i].alias, list->aliases[i].mime_type); + } + } +} diff --git a/gst/xdgmime/xdgmime/xdgmimealias.h b/gst/xdgmime/xdgmime/xdgmimealias.h new file mode 100644 index 00000000..3c28012d --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimealias.h @@ -0,0 +1,51 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimealias.h: Private file. Datastructure for storing the aliases. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2004 Red Hat, Inc. + * Copyright (C) 200 Matthias Clasen <mclasen@redhat.com> + * + * 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. + */ + +#ifndef __XDG_MIME_ALIAS_H__ +#define __XDG_MIME_ALIAS_H__ + +#include "xdgmime.h" + +typedef struct XdgAliasList XdgAliasList; + +#ifdef XDG_PREFIX +#define _xdg_mime_alias_read_from_file XDG_RESERVED_ENTRY(alias_read_from_file) +#define _xdg_mime_alias_list_new XDG_RESERVED_ENTRY(alias_list_new) +#define _xdg_mime_alias_list_free XDG_RESERVED_ENTRY(alias_list_free) +#define _xdg_mime_alias_list_lookup XDG_RESERVED_ENTRY(alias_list_lookup) +#define _xdg_mime_alias_list_dump XDG_RESERVED_ENTRY(alias_list_dump) +#endif + +void _xdg_mime_alias_read_from_file (XdgAliasList *list, + const char *file_name); +XdgAliasList *_xdg_mime_alias_list_new (void); +void _xdg_mime_alias_list_free (XdgAliasList *list); +const char *_xdg_mime_alias_list_lookup (XdgAliasList *list, + const char *alias); +void _xdg_mime_alias_list_dump (XdgAliasList *list); + +#endif /* __XDG_MIME_ALIAS_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimecache.c b/gst/xdgmime/xdgmime/xdgmimecache.c new file mode 100644 index 00000000..3a198c3b --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimecache.c @@ -0,0 +1,936 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimealias.c: Private file. mmappable caches for mime data + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2005 Matthias Clasen <mclasen@redhat.com> + * + * 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 <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <fcntl.h> +#include <unistd.h> +#include <fnmatch.h> +#include <assert.h> + +#include <netinet/in.h> /* for ntohl/ntohs */ + +#ifdef HAVE_MMAP +#include <sys/mman.h> +#else +#warning Building xdgmime without MMAP support. Binary "mime.info" cache files will not be used. +#endif + +#include <sys/stat.h> +#include <sys/types.h> + +#include "xdgmimecache.h" +#include "xdgmimeint.h" + +#ifndef MAX +#define MAX(a,b) ((a) > (b) ? (a) : (b)) +#endif + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +#ifndef _O_BINARY +#define _O_BINARY 0 +#endif + +#ifndef MAP_FAILED +#define MAP_FAILED ((void *) -1) +#endif + +#define MAJOR_VERSION 1 +#define MINOR_VERSION 1 + +struct _XdgMimeCache +{ + int ref_count; + + size_t size; + char *buffer; +}; + +#define GET_UINT16(cache,offset) (ntohs(*(xdg_uint16_t*)((cache) + (offset)))) +#define GET_UINT32(cache,offset) (ntohl(*(xdg_uint32_t*)((cache) + (offset)))) + +XdgMimeCache * +_xdg_mime_cache_ref (XdgMimeCache * cache) +{ + cache->ref_count++; + return cache; +} + +void +_xdg_mime_cache_unref (XdgMimeCache * cache) +{ + cache->ref_count--; + + if (cache->ref_count == 0) { +#ifdef HAVE_MMAP + munmap (cache->buffer, cache->size); +#endif + free (cache); + } +} + +XdgMimeCache * +_xdg_mime_cache_new_from_file (const char *file_name) +{ + XdgMimeCache *cache = NULL; + +#ifdef HAVE_MMAP + int fd = -1; + struct stat st; + char *buffer = NULL; + + /* Open the file and map it into memory */ + fd = open (file_name, O_RDONLY | _O_BINARY, 0); + + if (fd < 0) + return NULL; + + if (fstat (fd, &st) < 0 || st.st_size < 4) + goto done; + + buffer = (char *) mmap (NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); + + if (buffer == MAP_FAILED) + goto done; + + /* Verify version */ + if (GET_UINT16 (buffer, 0) != MAJOR_VERSION || + GET_UINT16 (buffer, 2) != MINOR_VERSION) { + munmap (buffer, st.st_size); + + goto done; + } + + cache = (XdgMimeCache *) malloc (sizeof (XdgMimeCache)); + cache->ref_count = 1; + cache->buffer = buffer; + cache->size = st.st_size; + +done: + if (fd != -1) + close (fd); + +#endif /* HAVE_MMAP */ + + return cache; +} + +static int +cache_magic_matchlet_compare_to_data (XdgMimeCache * cache, + xdg_uint32_t offset, const void *data, size_t len) +{ + xdg_uint32_t range_start = GET_UINT32 (cache->buffer, offset); + xdg_uint32_t range_length = GET_UINT32 (cache->buffer, offset + 4); + xdg_uint32_t data_length = GET_UINT32 (cache->buffer, offset + 12); + xdg_uint32_t data_offset = GET_UINT32 (cache->buffer, offset + 16); + xdg_uint32_t mask_offset = GET_UINT32 (cache->buffer, offset + 20); + + int i, j; + + for (i = range_start; i <= range_start + range_length; i++) { + int valid_matchlet = TRUE; + + if (i + data_length > len) + return FALSE; + + if (mask_offset) { + for (j = 0; j < data_length; j++) { + if ((((unsigned char *) cache->buffer)[data_offset + + j] & ((unsigned char *) cache->buffer)[mask_offset + j]) != + ((((unsigned char *) data)[j + + i]) & ((unsigned char *) cache->buffer)[mask_offset + + j])) { + valid_matchlet = FALSE; + break; + } + } + } else { + for (j = 0; j < data_length; j++) { + if (((unsigned char *) cache->buffer)[data_offset + j] != + ((unsigned char *) data)[j + i]) { + valid_matchlet = FALSE; + break; + } + } + } + + if (valid_matchlet) + return TRUE; + } + + return FALSE; +} + +static int +cache_magic_matchlet_compare (XdgMimeCache * cache, + xdg_uint32_t offset, const void *data, size_t len) +{ + xdg_uint32_t n_children = GET_UINT32 (cache->buffer, offset + 24); + xdg_uint32_t child_offset = GET_UINT32 (cache->buffer, offset + 28); + + int i; + + if (cache_magic_matchlet_compare_to_data (cache, offset, data, len)) { + if (n_children == 0) + return TRUE; + + for (i = 0; i < n_children; i++) { + if (cache_magic_matchlet_compare (cache, child_offset + 32 * i, + data, len)) + return TRUE; + } + } + + return FALSE; +} + +static const char * +cache_magic_compare_to_data (XdgMimeCache * cache, + xdg_uint32_t offset, const void *data, size_t len, int *prio) +{ + xdg_uint32_t priority = GET_UINT32 (cache->buffer, offset); + xdg_uint32_t mimetype_offset = GET_UINT32 (cache->buffer, offset + 4); + xdg_uint32_t n_matchlets = GET_UINT32 (cache->buffer, offset + 8); + xdg_uint32_t matchlet_offset = GET_UINT32 (cache->buffer, offset + 12); + + int i; + + for (i = 0; i < n_matchlets; i++) { + if (cache_magic_matchlet_compare (cache, matchlet_offset + i * 32, + data, len)) { + *prio = priority; + + return cache->buffer + mimetype_offset; + } + } + + return NULL; +} + +static const char * +cache_magic_lookup_data (XdgMimeCache * cache, + const void *data, + size_t len, int *prio, const char *mime_types[], int n_mime_types) +{ + xdg_uint32_t list_offset; + xdg_uint32_t n_entries; + xdg_uint32_t offset; + + int j, n; + + *prio = 0; + + list_offset = GET_UINT32 (cache->buffer, 24); + n_entries = GET_UINT32 (cache->buffer, list_offset); + offset = GET_UINT32 (cache->buffer, list_offset + 8); + + for (j = 0; j < n_entries; j++) { + const char *match; + + match = cache_magic_compare_to_data (cache, offset + 16 * j, + data, len, prio); + if (match) + return match; + else { + xdg_uint32_t mimetype_offset; + const char *non_match; + + mimetype_offset = GET_UINT32 (cache->buffer, offset + 16 * j + 4); + non_match = cache->buffer + mimetype_offset; + + for (n = 0; n < n_mime_types; n++) { + if (mime_types[n] && + _xdg_mime_mime_type_equal (mime_types[n], non_match)) + mime_types[n] = NULL; + } + } + } + + return NULL; +} + +static const char * +cache_alias_lookup (const char *alias) +{ + const char *ptr; + int i, min, max, mid, cmp; + + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, 4); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + xdg_uint32_t offset; + + min = 0; + max = n_entries - 1; + while (max >= min) { + mid = (min + max) / 2; + + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 8 * mid); + ptr = cache->buffer + offset; + cmp = strcmp (ptr, alias); + + if (cmp < 0) + min = mid + 1; + else if (cmp > 0) + max = mid - 1; + else { + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 8 * mid + 4); + return cache->buffer + offset; + } + } + } + + return NULL; +} + +typedef struct +{ + const char *mime; + int weight; +} MimeWeight; + +static int +cache_glob_lookup_literal (const char *file_name, + const char *mime_types[], int n_mime_types) +{ + const char *ptr; + int i, min, max, mid, cmp; + + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, 12); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + xdg_uint32_t offset; + + min = 0; + max = n_entries - 1; + while (max >= min) { + mid = (min + max) / 2; + + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 12 * mid); + ptr = cache->buffer + offset; + cmp = strcmp (ptr, file_name); + + if (cmp < 0) + min = mid + 1; + else if (cmp > 0) + max = mid - 1; + else { + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 12 * mid + 4); + mime_types[0] = (const char *) (cache->buffer + offset); + + return 1; + } + } + } + + return 0; +} + +static int +cache_glob_lookup_fnmatch (const char *file_name, + MimeWeight mime_types[], int n_mime_types) +{ + const char *mime_type; + const char *ptr; + + int i, j, n; + + n = 0; + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, 20); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + + for (j = 0; j < n_entries && n < n_mime_types; j++) { + xdg_uint32_t offset = + GET_UINT32 (cache->buffer, list_offset + 4 + 12 * j); + xdg_uint32_t mimetype_offset = + GET_UINT32 (cache->buffer, list_offset + 4 + 12 * j + 4); + int weight = GET_UINT32 (cache->buffer, list_offset + 4 + 12 * j + 8); + ptr = cache->buffer + offset; + mime_type = cache->buffer + mimetype_offset; + + /* FIXME: Not UTF-8 safe */ + if (fnmatch (ptr, file_name, 0) == 0) { + mime_types[n].mime = mime_type; + mime_types[n].weight = weight; + n++; + } + } + + if (n > 0) + return n; + } + + return 0; +} + +static int +cache_glob_node_lookup_suffix (XdgMimeCache * cache, + xdg_uint32_t n_entries, + xdg_uint32_t offset, + xdg_unichar_t * file_name, + int len, int ignore_case, MimeWeight mime_types[], int n_mime_types) +{ + xdg_unichar_t character; + xdg_unichar_t match_char; + xdg_uint32_t mimetype_offset; + xdg_uint32_t n_children; + xdg_uint32_t child_offset; + int weight; + + int min, max, mid, n, i; + + character = file_name[len - 1]; + if (ignore_case) + character = _xdg_ucs4_to_lower (character); + + assert (character != 0); + + min = 0; + max = n_entries - 1; + while (max >= min) { + mid = (min + max) / 2; + match_char = GET_UINT32 (cache->buffer, offset + 12 * mid); + if (match_char < character) + min = mid + 1; + else if (match_char > character) + max = mid - 1; + else { + len--; + n = 0; + n_children = GET_UINT32 (cache->buffer, offset + 12 * mid + 4); + child_offset = GET_UINT32 (cache->buffer, offset + 12 * mid + 8); + + if (len > 0) { + n = cache_glob_node_lookup_suffix (cache, + n_children, child_offset, + file_name, len, ignore_case, mime_types, n_mime_types); + } + if (n == 0) { + i = 0; + while (n < n_mime_types && i < n_children) { + match_char = GET_UINT32 (cache->buffer, child_offset + 12 * i); + if (match_char != 0) + break; + + mimetype_offset = + GET_UINT32 (cache->buffer, child_offset + 12 * i + 4); + weight = GET_UINT32 (cache->buffer, child_offset + 12 * i + 8); + + mime_types[n].mime = cache->buffer + mimetype_offset; + mime_types[n].weight = weight; + n++; + i++; + } + } + return n; + } + } + return 0; +} + +static int +cache_glob_lookup_suffix (xdg_unichar_t * file_name, + int len, int ignore_case, MimeWeight mime_types[], int n_mime_types) +{ + int i, n; + + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, 16); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + xdg_uint32_t offset = GET_UINT32 (cache->buffer, list_offset + 4); + + n = cache_glob_node_lookup_suffix (cache, + n_entries, offset, + file_name, len, ignore_case, mime_types, n_mime_types); + if (n > 0) + return n; + } + + return 0; +} + +static int +compare_mime_weight (const void *a, const void *b) +{ + const MimeWeight *aa = (const MimeWeight *) a; + const MimeWeight *bb = (const MimeWeight *) b; + + return aa->weight - bb->weight; +} + +static int +cache_glob_lookup_file_name (const char *file_name, + const char *mime_types[], int n_mime_types) +{ + int n; + MimeWeight mimes[10]; + int n_mimes = 10; + int i; + xdg_unichar_t *ucs4; + int len; + + assert (file_name != NULL && n_mime_types > 0); + + /* First, check the literals */ + n = cache_glob_lookup_literal (file_name, mime_types, n_mime_types); + if (n > 0) + return n; + + ucs4 = _xdg_convert_to_ucs4 (file_name, &len); + n = cache_glob_lookup_suffix (ucs4, len, FALSE, mimes, n_mimes); + + if (n == 0) + n = cache_glob_lookup_suffix (ucs4, len, TRUE, mimes, n_mimes); + free (ucs4); + + /* Last, try fnmatch */ + if (n == 0) + n = cache_glob_lookup_fnmatch (file_name, mimes, n_mimes); + + qsort (mimes, n, sizeof (MimeWeight), compare_mime_weight); + + if (n_mime_types < n) + n = n_mime_types; + + for (i = 0; i < n; i++) + mime_types[i] = mimes[i].mime; + + return n; +} + +int +_xdg_mime_cache_get_max_buffer_extents (void) +{ + xdg_uint32_t offset; + xdg_uint32_t max_extent; + int i; + + max_extent = 0; + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + + offset = GET_UINT32 (cache->buffer, 24); + max_extent = MAX (max_extent, GET_UINT32 (cache->buffer, offset + 4)); + } + + return max_extent; +} + +static const char * +cache_get_mime_type_for_data (const void *data, + size_t len, int *result_prio, const char *mime_types[], int n_mime_types) +{ + const char *mime_type; + int i, n, priority; + + priority = 0; + mime_type = NULL; + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + + int prio; + const char *match; + + match = cache_magic_lookup_data (cache, data, len, &prio, + mime_types, n_mime_types); + if (prio > priority) { + priority = prio; + mime_type = match; + } + } + + if (result_prio) + *result_prio = priority; + + if (priority > 0) + return mime_type; + + for (n = 0; n < n_mime_types; n++) { + + if (mime_types[n]) + return mime_types[n]; + } + + return XDG_MIME_TYPE_UNKNOWN; +} + +const char * +_xdg_mime_cache_get_mime_type_for_data (const void *data, + size_t len, int *result_prio) +{ + return cache_get_mime_type_for_data (data, len, result_prio, NULL, 0); +} + +const char * +_xdg_mime_cache_get_mime_type_for_file (const char *file_name, + struct stat *statbuf) +{ + const char *mime_type; + const char *mime_types[10]; + 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; + + base_name = _xdg_get_base_name (file_name); + n = cache_glob_lookup_file_name (base_name, mime_types, 10); + + 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_cache_get_max_buffer_extents (); + 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 = cache_get_mime_type_for_data (data, bytes_read, NULL, + mime_types, n); + + free (data); + fclose (file); + + return mime_type; +} + +const char * +_xdg_mime_cache_get_mime_type_from_file_name (const char *file_name) +{ + const char *mime_type; + + if (cache_glob_lookup_file_name (file_name, &mime_type, 1)) + return mime_type; + else + return XDG_MIME_TYPE_UNKNOWN; +} + +int +_xdg_mime_cache_get_mime_types_from_file_name (const char *file_name, + const char *mime_types[], int n_mime_types) +{ + return cache_glob_lookup_file_name (file_name, mime_types, n_mime_types); +} + +#if 1 +static int +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_cache_mime_type_subclass (const char *mime, const char *base) +{ + const char *umime, *ubase; + + int i, j, min, max, med, cmp; + + umime = _xdg_mime_cache_unalias_mime_type (mime); + ubase = _xdg_mime_cache_unalias_mime_type (base); + + if (strcmp (umime, ubase) == 0) + return 1; + + /* We really want to handle text/ * in GtkFileFilter, so we just + * turn on the supertype matching + */ +#if 1 + /* Handle supertypes */ + if (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; + + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, 8); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + xdg_uint32_t offset, n_parents, parent_offset; + + min = 0; + max = n_entries - 1; + while (max >= min) { + med = (min + max) / 2; + + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 8 * med); + cmp = strcmp (cache->buffer + offset, umime); + if (cmp < 0) + min = med + 1; + else if (cmp > 0) + max = med - 1; + else { + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 8 * med + 4); + n_parents = GET_UINT32 (cache->buffer, offset); + + for (j = 0; j < n_parents; j++) { + parent_offset = GET_UINT32 (cache->buffer, offset + 4 + 4 * j); + if (_xdg_mime_cache_mime_type_subclass (cache->buffer + parent_offset, + ubase)) + return 1; + } + + break; + } + } + } + + return 0; +} + +const char * +_xdg_mime_cache_unalias_mime_type (const char *mime) +{ + const char *lookup; + + lookup = cache_alias_lookup (mime); + + if (lookup) + return lookup; + + return mime; +} + +char ** +_xdg_mime_cache_list_mime_parents (const char *mime) +{ + int i, j, k, l, p; + char *all_parents[128]; /* we'll stop at 128 */ + char **result; + + mime = xdg_mime_unalias_mime_type (mime); + + p = 0; + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, 8); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + + for (j = 0; j < n_entries; j++) { + xdg_uint32_t mimetype_offset = + GET_UINT32 (cache->buffer, list_offset + 4 + 8 * j); + xdg_uint32_t parents_offset = + GET_UINT32 (cache->buffer, list_offset + 4 + 8 * j + 4); + + if (strcmp (cache->buffer + mimetype_offset, mime) == 0) { + xdg_uint32_t parent_mime_offset; + xdg_uint32_t n_parents = GET_UINT32 (cache->buffer, parents_offset); + + for (k = 0; k < n_parents && p < 127; k++) { + parent_mime_offset = + GET_UINT32 (cache->buffer, parents_offset + 4 + 4 * k); + + /* Don't add same parent multiple times. + * This can happen for instance if the same type is listed in multiple directories + */ + for (l = 0; l < p; l++) { + if (strcmp (all_parents[l], + cache->buffer + parent_mime_offset) == 0) + break; + } + + if (l == p) + all_parents[p++] = cache->buffer + parent_mime_offset; + } + + break; + } + } + } + all_parents[p++] = NULL; + + result = (char **) malloc (p * sizeof (char *)); + memcpy (result, all_parents, p * sizeof (char *)); + + return result; +} + +static const char * +cache_lookup_icon (const char *mime, int header) +{ + const char *ptr; + int i, min, max, mid, cmp; + + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + xdg_uint32_t list_offset = GET_UINT32 (cache->buffer, header); + xdg_uint32_t n_entries = GET_UINT32 (cache->buffer, list_offset); + xdg_uint32_t offset; + + min = 0; + max = n_entries - 1; + while (max >= min) { + mid = (min + max) / 2; + + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 8 * mid); + ptr = cache->buffer + offset; + cmp = strcmp (ptr, mime); + + if (cmp < 0) + min = mid + 1; + else if (cmp > 0) + max = mid - 1; + else { + offset = GET_UINT32 (cache->buffer, list_offset + 4 + 8 * mid + 4); + return cache->buffer + offset; + } + } + } + + return NULL; +} + +const char * +_xdg_mime_cache_get_generic_icon (const char *mime) +{ + return cache_lookup_icon (mime, 36); +} + +const char * +_xdg_mime_cache_get_icon (const char *mime) +{ + const char *icon; + + icon = cache_lookup_icon (mime, 32); + + if (icon == NULL) + icon = _xdg_mime_cache_get_generic_icon (mime); + + return icon; +} + +static void +dump_glob_node (XdgMimeCache * cache, xdg_uint32_t offset, int depth) +{ + xdg_unichar_t character; + xdg_uint32_t mime_offset; + xdg_uint32_t n_children; + xdg_uint32_t child_offset; + int i; + + character = GET_UINT32 (cache->buffer, offset); + mime_offset = GET_UINT32 (cache->buffer, offset + 4); + n_children = GET_UINT32 (cache->buffer, offset + 8); + child_offset = GET_UINT32 (cache->buffer, offset + 12); + for (i = 0; i < depth; i++) + printf (" "); + printf ("%c", character); + if (mime_offset) + printf (" - %s", cache->buffer + mime_offset); + printf ("\n"); + if (child_offset) { + for (i = 0; i < n_children; i++) + dump_glob_node (cache, child_offset + 20 * i, depth + 1); + } +} + +void +_xdg_mime_cache_glob_dump (void) +{ + int i, j; + for (i = 0; _caches[i]; i++) { + XdgMimeCache *cache = _caches[i]; + xdg_uint32_t list_offset; + xdg_uint32_t n_entries; + xdg_uint32_t offset; + list_offset = GET_UINT32 (cache->buffer, 16); + n_entries = GET_UINT32 (cache->buffer, list_offset); + offset = GET_UINT32 (cache->buffer, list_offset + 4); + for (j = 0; j < n_entries; j++) + dump_glob_node (cache, offset + 20 * j, 0); + } +} diff --git a/gst/xdgmime/xdgmime/xdgmimecache.h b/gst/xdgmime/xdgmime/xdgmimecache.h new file mode 100644 index 00000000..27f42d0c --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimecache.h @@ -0,0 +1,81 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimecache.h: Private file. Datastructure for mmapped caches. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2005 Matthias Clasen <mclasen@redhat.com> + * + * 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. + */ + +#ifndef __XDG_MIME_CACHE_H__ +#define __XDG_MIME_CACHE_H__ + +#include "xdgmime.h" + +typedef struct _XdgMimeCache XdgMimeCache; + +#ifdef XDG_PREFIX +#define _xdg_mime_cache_new_from_file XDG_RESERVED_ENTRY(cache_new_from_file) +#define _xdg_mime_cache_ref XDG_RESERVED_ENTRY(cache_ref) +#define _xdg_mime_cache_unref XDG_RESERVED_ENTRY(cache_unref) +#define _xdg_mime_cache_get_max_buffer_extents XDG_RESERVED_ENTRY(cache_get_max_buffer_extents) +#define _xdg_mime_cache_get_mime_type_for_data XDG_RESERVED_ENTRY(cache_get_mime_type_for_data) +#define _xdg_mime_cache_get_mime_type_for_file XDG_RESERVED_ENTRY(cache_get_mime_type_for_file) +#define _xdg_mime_cache_get_mime_type_from_file_name XDG_RESERVED_ENTRY(cache_get_mime_type_from_file_name) +#define _xdg_mime_cache_get_mime_types_from_file_name XDG_RESERVED_ENTRY(cache_get_mime_types_from_file_name) +#define _xdg_mime_cache_list_mime_parents XDG_RESERVED_ENTRY(cache_list_mime_parents) +#define _xdg_mime_cache_mime_type_subclass XDG_RESERVED_ENTRY(cache_mime_type_subclass) +#define _xdg_mime_cache_unalias_mime_type XDG_RESERVED_ENTRY(cache_unalias_mime_type) +#define _xdg_mime_cache_get_icon XDG_RESERVED_ENTRY(cache_get_icon) +#define _xdg_mime_cache_get_generic_icon XDG_RESERVED_ENTRY(cache_get_generic_icon) +#define _xdg_mime_cache_glob_dump XDG_RESERVED_ENTRY(cache_glob_dump) +#endif + +extern XdgMimeCache **_caches; + +XdgMimeCache *_xdg_mime_cache_new_from_file (const char *file_name); +XdgMimeCache *_xdg_mime_cache_ref (XdgMimeCache *cache); +void _xdg_mime_cache_unref (XdgMimeCache *cache); + + +const char *_xdg_mime_cache_get_mime_type_for_data (const void *data, + size_t len, + int *result_prio); +const char *_xdg_mime_cache_get_mime_type_for_file (const char *file_name, + struct stat *statbuf); +int _xdg_mime_cache_get_mime_types_from_file_name (const char *file_name, + const char *mime_types[], + int n_mime_types); +const char *_xdg_mime_cache_get_mime_type_from_file_name (const char *file_name); +int _xdg_mime_cache_is_valid_mime_type (const char *mime_type); +int _xdg_mime_cache_mime_type_equal (const char *mime_a, + const char *mime_b); +int _xdg_mime_cache_media_type_equal (const char *mime_a, + const char *mime_b); +int _xdg_mime_cache_mime_type_subclass (const char *mime_a, + const char *mime_b); +char **_xdg_mime_cache_list_mime_parents (const char *mime); +const char *_xdg_mime_cache_unalias_mime_type (const char *mime); +int _xdg_mime_cache_get_max_buffer_extents (void); +const char *_xdg_mime_cache_get_icon (const char *mime); +const char *_xdg_mime_cache_get_generic_icon (const char *mime); +void _xdg_mime_cache_glob_dump (void); + +#endif /* __XDG_MIME_CACHE_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimeglob.c b/gst/xdgmime/xdgmime/xdgmimeglob.c new file mode 100644 index 00000000..ed2b73a4 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeglob.c @@ -0,0 +1,549 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeglob.c: Private file. Datastructure for storing the globs. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2003 Red Hat, Inc. + * Copyright (C) 2003 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 "xdgmimeglob.h" +#include "xdgmimeint.h" +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include <fnmatch.h> + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +typedef struct XdgGlobHashNode XdgGlobHashNode; +typedef struct XdgGlobList XdgGlobList; + +struct XdgGlobHashNode +{ + xdg_unichar_t character; + const char *mime_type; + int weight; + XdgGlobHashNode *next; + XdgGlobHashNode *child; +}; +struct XdgGlobList +{ + const char *data; + const char *mime_type; + int weight; + XdgGlobList *next; +}; + +struct XdgGlobHash +{ + XdgGlobList *literal_list; + XdgGlobHashNode *simple_node; + XdgGlobList *full_list; +}; + + +/* XdgGlobList + */ +static XdgGlobList * +_xdg_glob_list_new (void) +{ + XdgGlobList *new_element; + + new_element = calloc (1, sizeof (XdgGlobList)); + + return new_element; +} + +/* Frees glob_list and all of it's children */ +static void +_xdg_glob_list_free (XdgGlobList * glob_list) +{ + XdgGlobList *ptr, *next; + + ptr = glob_list; + + while (ptr != NULL) { + next = ptr->next; + + if (ptr->data) + free ((void *) ptr->data); + if (ptr->mime_type) + free ((void *) ptr->mime_type); + free (ptr); + + ptr = next; + } +} + +static XdgGlobList * +_xdg_glob_list_append (XdgGlobList * glob_list, + void *data, const char *mime_type, int weight) +{ + XdgGlobList *new_element; + XdgGlobList *tmp_element; + + new_element = _xdg_glob_list_new (); + new_element->data = data; + new_element->mime_type = mime_type; + new_element->weight = weight; + if (glob_list == NULL) + return new_element; + + tmp_element = glob_list; + while (tmp_element->next != NULL) + tmp_element = tmp_element->next; + + tmp_element->next = new_element; + + return glob_list; +} + +/* XdgGlobHashNode + */ + +static XdgGlobHashNode * +_xdg_glob_hash_node_new (void) +{ + XdgGlobHashNode *glob_hash_node; + + glob_hash_node = calloc (1, sizeof (XdgGlobHashNode)); + + return glob_hash_node; +} + +static void +_xdg_glob_hash_node_dump (XdgGlobHashNode * glob_hash_node, int depth) +{ + int i; + for (i = 0; i < depth; i++) + printf (" "); + + printf ("%c", (char) glob_hash_node->character); + if (glob_hash_node->mime_type) + printf (" - %s %d\n", glob_hash_node->mime_type, glob_hash_node->weight); + else + printf ("\n"); + if (glob_hash_node->child) + _xdg_glob_hash_node_dump (glob_hash_node->child, depth + 1); + if (glob_hash_node->next) + _xdg_glob_hash_node_dump (glob_hash_node->next, depth); +} + +static XdgGlobHashNode * +_xdg_glob_hash_insert_ucs4 (XdgGlobHashNode * glob_hash_node, + xdg_unichar_t * text, const char *mime_type, int weight) +{ + XdgGlobHashNode *node; + xdg_unichar_t character; + + character = text[0]; + + if ((glob_hash_node == NULL) || (character < glob_hash_node->character)) { + node = _xdg_glob_hash_node_new (); + node->character = character; + node->next = glob_hash_node; + glob_hash_node = node; + } else if (character == glob_hash_node->character) { + node = glob_hash_node; + } else { + XdgGlobHashNode *prev_node; + int found_node = FALSE; + + /* Look for the first character of text in glob_hash_node, and insert it if we + * have to.*/ + prev_node = glob_hash_node; + node = prev_node->next; + + while (node != NULL) { + if (character < node->character) { + node = _xdg_glob_hash_node_new (); + node->character = character; + node->next = prev_node->next; + prev_node->next = node; + + found_node = TRUE; + break; + } else if (character == node->character) { + found_node = TRUE; + break; + } + prev_node = node; + node = node->next; + } + + if (!found_node) { + node = _xdg_glob_hash_node_new (); + node->character = character; + node->next = prev_node->next; + prev_node->next = node; + } + } + + text++; + if (*text == 0) { + if (node->mime_type) { + if (strcmp (node->mime_type, mime_type)) { + XdgGlobHashNode *child; + int found_node = FALSE; + + child = node->child; + while (child && child->character == 0) { + if (strcmp (child->mime_type, mime_type) == 0) { + found_node = TRUE; + break; + } + child = child->next; + } + + if (!found_node) { + child = _xdg_glob_hash_node_new (); + child->character = 0; + child->mime_type = strdup (mime_type); + child->weight = weight; + child->child = NULL; + child->next = node->child; + node->child = child; + } + } + } else { + node->mime_type = strdup (mime_type); + node->weight = weight; + } + } else { + node->child = + _xdg_glob_hash_insert_ucs4 (node->child, text, mime_type, weight); + } + return glob_hash_node; +} + +/* glob must be valid UTF-8 */ +static XdgGlobHashNode * +_xdg_glob_hash_insert_text (XdgGlobHashNode * glob_hash_node, + const char *text, const char *mime_type, int weight) +{ + XdgGlobHashNode *node; + xdg_unichar_t *unitext; + int len; + + unitext = _xdg_convert_to_ucs4 (text, &len); + _xdg_reverse_ucs4 (unitext, len); + node = + _xdg_glob_hash_insert_ucs4 (glob_hash_node, unitext, mime_type, weight); + free (unitext); + return node; +} + +typedef struct +{ + const char *mime; + int weight; +} MimeWeight; + +static int +_xdg_glob_hash_node_lookup_file_name (XdgGlobHashNode * glob_hash_node, + xdg_unichar_t * file_name, + int len, int ignore_case, MimeWeight mime_types[], int n_mime_types) +{ + int n; + XdgGlobHashNode *node; + xdg_unichar_t character; + + if (glob_hash_node == NULL) + return 0; + + character = file_name[len - 1]; + if (ignore_case) + character = _xdg_ucs4_to_lower (character); + + for (node = glob_hash_node; node && character >= node->character; + node = node->next) { + if (character == node->character) { + len--; + n = 0; + if (len > 0) { + n = _xdg_glob_hash_node_lookup_file_name (node->child, + file_name, len, ignore_case, mime_types, n_mime_types); + } + if (n == 0) { + if (node->mime_type) { + mime_types[n].mime = node->mime_type; + mime_types[n].weight = node->weight; + n++; + } + node = node->child; + while (n < n_mime_types && node && node->character == 0) { + if (node->mime_type) { + mime_types[n].mime = node->mime_type; + mime_types[n].weight = node->weight; + n++; + } + node = node->next; + } + } + return n; + } + } + + return 0; +} + +static int +compare_mime_weight (const void *a, const void *b) +{ + const MimeWeight *aa = (const MimeWeight *) a; + const MimeWeight *bb = (const MimeWeight *) b; + + return aa->weight - bb->weight; +} + +int +_xdg_glob_hash_lookup_file_name (XdgGlobHash * glob_hash, + const char *file_name, const char *mime_types[], int n_mime_types) +{ + XdgGlobList *list; + int i, n; + MimeWeight mimes[10]; + int n_mimes = 10; + xdg_unichar_t *ucs4; + int len; + + /* First, check the literals */ + + assert (file_name != NULL && n_mime_types > 0); + + n = 0; + + for (list = glob_hash->literal_list; list; list = list->next) { + if (strcmp ((const char *) list->data, file_name) == 0) { + mime_types[0] = list->mime_type; + return 1; + } + } + + ucs4 = _xdg_convert_to_ucs4 (file_name, &len); + n = _xdg_glob_hash_node_lookup_file_name (glob_hash->simple_node, ucs4, len, + FALSE, mimes, n_mimes); + if (n == 0) + n = _xdg_glob_hash_node_lookup_file_name (glob_hash->simple_node, ucs4, len, + TRUE, mimes, n_mimes); + free (ucs4); + + /* FIXME: Not UTF-8 safe */ + if (n == 0) { + for (list = glob_hash->full_list; list && n < n_mime_types; + list = list->next) { + if (fnmatch ((const char *) list->data, file_name, 0) == 0) { + mimes[n].mime = list->mime_type; + mimes[n].weight = list->weight; + n++; + } + } + } + + qsort (mimes, n, sizeof (MimeWeight), compare_mime_weight); + + if (n_mime_types < n) + n = n_mime_types; + + for (i = 0; i < n; i++) + mime_types[i] = mimes[i].mime; + + return n; +} + + + +/* XdgGlobHash + */ + +XdgGlobHash * +_xdg_glob_hash_new (void) +{ + XdgGlobHash *glob_hash; + + glob_hash = calloc (1, sizeof (XdgGlobHash)); + + return glob_hash; +} + + +static void +_xdg_glob_hash_free_nodes (XdgGlobHashNode * node) +{ + if (node) { + if (node->child) + _xdg_glob_hash_free_nodes (node->child); + if (node->next) + _xdg_glob_hash_free_nodes (node->next); + if (node->mime_type) + free ((void *) node->mime_type); + free (node); + } +} + +void +_xdg_glob_hash_free (XdgGlobHash * glob_hash) +{ + _xdg_glob_list_free (glob_hash->literal_list); + _xdg_glob_list_free (glob_hash->full_list); + _xdg_glob_hash_free_nodes (glob_hash->simple_node); + free (glob_hash); +} + +XdgGlobType +_xdg_glob_determine_type (const char *glob) +{ + const char *ptr; + int maybe_in_simple_glob = FALSE; + int first_char = TRUE; + + ptr = glob; + + while (*ptr != '\0') { + if (*ptr == '*' && first_char) + maybe_in_simple_glob = TRUE; + else if (*ptr == '\\' || *ptr == '[' || *ptr == '?' || *ptr == '*') + return XDG_GLOB_FULL; + + first_char = FALSE; + ptr = _xdg_utf8_next_char (ptr); + } + if (maybe_in_simple_glob) + return XDG_GLOB_SIMPLE; + else + return XDG_GLOB_LITERAL; +} + +/* glob must be valid UTF-8 */ +void +_xdg_glob_hash_append_glob (XdgGlobHash * glob_hash, + const char *glob, const char *mime_type, int weight) +{ + XdgGlobType type; + + assert (glob_hash != NULL); + assert (glob != NULL); + + type = _xdg_glob_determine_type (glob); + + switch (type) { + case XDG_GLOB_LITERAL: + glob_hash->literal_list = + _xdg_glob_list_append (glob_hash->literal_list, strdup (glob), + strdup (mime_type), weight); + break; + case XDG_GLOB_SIMPLE: + glob_hash->simple_node = + _xdg_glob_hash_insert_text (glob_hash->simple_node, glob + 1, + mime_type, weight); + break; + case XDG_GLOB_FULL: + glob_hash->full_list = + _xdg_glob_list_append (glob_hash->full_list, strdup (glob), + strdup (mime_type), weight); + break; + } +} + +void +_xdg_glob_hash_dump (XdgGlobHash * glob_hash) +{ + XdgGlobList *list; + printf ("LITERAL STRINGS\n"); + if (!glob_hash || glob_hash->literal_list == NULL) { + printf (" None\n"); + } else { + for (list = glob_hash->literal_list; list; list = list->next) + printf (" %s - %s %d\n", (char *) list->data, list->mime_type, + list->weight); + } + printf ("\nSIMPLE GLOBS\n"); + if (!glob_hash || glob_hash->simple_node == NULL) { + printf (" None\n"); + } else { + _xdg_glob_hash_node_dump (glob_hash->simple_node, 4); + } + + printf ("\nFULL GLOBS\n"); + if (!glob_hash || glob_hash->full_list == NULL) { + printf (" None\n"); + } else { + for (list = glob_hash->full_list; list; list = list->next) + printf (" %s - %s %d\n", (char *) list->data, list->mime_type, + list->weight); + } +} + + +void +_xdg_mime_glob_read_from_file (XdgGlobHash * glob_hash, const char *file_name) +{ + FILE *glob_file; + char line[255]; + + glob_file = fopen (file_name, "r"); + + if (glob_file == NULL) + return; + + /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars. + * Blah */ + while (fgets (line, 255, glob_file) != NULL) { + char *colon, *colon2; + char *mimetype, *glob; + int weight; + + if (line[0] == '#') + continue; + + colon = strchr (line, ':'); + if (colon == NULL) + continue; + *(colon++) = '\0'; + colon[strlen (colon) - 1] = '\0'; + colon2 = strchr (colon, ':'); + if (colon2) { + *(colon2++) = '\000'; + weight = atoi (line); + mimetype = colon; + glob = colon2; + } else { + weight = 50; + mimetype = line; + glob = colon; + } + _xdg_glob_hash_append_glob (glob_hash, glob, mimetype, weight); + } + + fclose (glob_file); +} diff --git a/gst/xdgmime/xdgmime/xdgmimeglob.h b/gst/xdgmime/xdgmime/xdgmimeglob.h new file mode 100644 index 00000000..df8dc79f --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeglob.h @@ -0,0 +1,68 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeglob.h: Private file. Datastructure for storing the globs. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2003 Red Hat, Inc. + * Copyright (C) 2003 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. + */ + +#ifndef __XDG_MIME_GLOB_H__ +#define __XDG_MIME_GLOB_H__ + +#include "xdgmime.h" + +typedef struct XdgGlobHash XdgGlobHash; + +typedef enum +{ + XDG_GLOB_LITERAL, /* Makefile */ + XDG_GLOB_SIMPLE, /* *.gif */ + XDG_GLOB_FULL /* x*.[ch] */ +} XdgGlobType; + + +#ifdef XDG_PREFIX +#define _xdg_mime_glob_read_from_file XDG_RESERVED_ENTRY(glob_read_from_file) +#define _xdg_glob_hash_new XDG_RESERVED_ENTRY(hash_new) +#define _xdg_glob_hash_free XDG_RESERVED_ENTRY(hash_free) +#define _xdg_glob_hash_lookup_file_name XDG_RESERVED_ENTRY(hash_lookup_file_name) +#define _xdg_glob_hash_append_glob XDG_RESERVED_ENTRY(hash_append_glob) +#define _xdg_glob_determine_type XDG_RESERVED_ENTRY(determine_type) +#define _xdg_glob_hash_dump XDG_RESERVED_ENTRY(hash_dump) +#endif + +void _xdg_mime_glob_read_from_file (XdgGlobHash *glob_hash, + const char *file_name); +XdgGlobHash *_xdg_glob_hash_new (void); +void _xdg_glob_hash_free (XdgGlobHash *glob_hash); +int _xdg_glob_hash_lookup_file_name (XdgGlobHash *glob_hash, + const char *text, + const char *mime_types[], + int n_mime_types); +void _xdg_glob_hash_append_glob (XdgGlobHash *glob_hash, + const char *glob, + const char *mime_type, + int weight); +XdgGlobType _xdg_glob_determine_type (const char *glob); +void _xdg_glob_hash_dump (XdgGlobHash *glob_hash); + +#endif /* __XDG_MIME_GLOB_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimeicon.c b/gst/xdgmime/xdgmime/xdgmimeicon.c new file mode 100644 index 00000000..83e972b1 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeicon.c @@ -0,0 +1,167 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeicon.c: Private file. Datastructure for storing the aliases. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2008 Red Hat, Inc. + * + * 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 "xdgmimeicon.h" +#include "xdgmimeint.h" +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include <fnmatch.h> + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +typedef struct XdgIcon XdgIcon; + +struct XdgIcon +{ + char *mime_type; + char *icon_name; +}; + +struct XdgIconList +{ + struct XdgIcon *icons; + int n_icons; +}; + +XdgIconList * +_xdg_mime_icon_list_new (void) +{ + XdgIconList *list; + + list = malloc (sizeof (XdgIconList)); + + list->icons = NULL; + list->n_icons = 0; + + return list; +} + +void +_xdg_mime_icon_list_free (XdgIconList * list) +{ + int i; + + if (list->icons) { + for (i = 0; i < list->n_icons; i++) { + free (list->icons[i].mime_type); + free (list->icons[i].icon_name); + } + free (list->icons); + } + free (list); +} + +static int +icon_entry_cmp (const void *v1, const void *v2) +{ + return strcmp (((XdgIcon *) v1)->mime_type, ((XdgIcon *) v2)->mime_type); +} + +const char * +_xdg_mime_icon_list_lookup (XdgIconList * list, const char *mime_type) +{ + XdgIcon *entry; + XdgIcon key; + + if (list->n_icons > 0) { + key.mime_type = (char *) mime_type; + key.icon_name = NULL; + + entry = bsearch (&key, list->icons, list->n_icons, + sizeof (XdgIcon), icon_entry_cmp); + if (entry) + return entry->icon_name; + } + + return NULL; +} + +void +_xdg_mime_icon_read_from_file (XdgIconList * list, const char *file_name) +{ + FILE *file; + char line[255]; + int alloc; + + file = fopen (file_name, "r"); + + if (file == NULL) + return; + + /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars. + * Blah */ + alloc = list->n_icons + 16; + list->icons = realloc (list->icons, alloc * sizeof (XdgIcon)); + while (fgets (line, 255, file) != NULL) { + char *sep; + if (line[0] == '#') + continue; + + sep = strchr (line, ':'); + if (sep == NULL) + continue; + *(sep++) = '\000'; + sep[strlen (sep) - 1] = '\000'; + if (list->n_icons == alloc) { + alloc <<= 1; + list->icons = realloc (list->icons, alloc * sizeof (XdgIcon)); + } + list->icons[list->n_icons].mime_type = strdup (line); + list->icons[list->n_icons].icon_name = strdup (sep); + list->n_icons++; + } + list->icons = realloc (list->icons, list->n_icons * sizeof (XdgIcon)); + + fclose (file); + + if (list->n_icons > 1) + qsort (list->icons, list->n_icons, sizeof (XdgIcon), icon_entry_cmp); +} + + +void +_xdg_mime_icon_list_dump (XdgIconList * list) +{ + int i; + + if (list->icons) { + for (i = 0; i < list->n_icons; i++) { + printf ("%s %s\n", list->icons[i].mime_type, list->icons[i].icon_name); + } + } +} diff --git a/gst/xdgmime/xdgmime/xdgmimeicon.h b/gst/xdgmime/xdgmime/xdgmimeicon.h new file mode 100644 index 00000000..b5f25835 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeicon.h @@ -0,0 +1,50 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeicon.h: Private file. Datastructure for storing the aliases. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2008 Red Hat, Inc. + * + * 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. + */ + +#ifndef __XDG_MIME_ICON_H__ +#define __XDG_MIME_ICON_H__ + +#include "xdgmime.h" + +typedef struct XdgIconList XdgIconList; + +#ifdef XDG_PREFIX +#define _xdg_mime_icon_read_from_file XDG_ENTRY(icon_read_from_file) +#define _xdg_mime_icon_list_new XDG_ENTRY(icon_list_new) +#define _xdg_mime_icon_list_free XDG_ENTRY(icon_list_free) +#define _xdg_mime_icon_list_lookup XDG_ENTRY(icon_list_lookup) +#define _xdg_mime_icon_list_dump XDG_ENTRY(icon_list_dump) +#endif + +void _xdg_mime_icon_read_from_file (XdgIconList *list, + const char *file_name); +XdgIconList *_xdg_mime_icon_list_new (void); +void _xdg_mime_icon_list_free (XdgIconList *list); +const char *_xdg_mime_icon_list_lookup (XdgIconList *list, + const char *mime); +void _xdg_mime_icon_list_dump (XdgIconList *list); + +#endif /* __XDG_MIME_ICON_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimeint.c b/gst/xdgmime/xdgmime/xdgmimeint.c new file mode 100644 index 00000000..69493c59 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeint.c @@ -0,0 +1,178 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeint.c: Internal defines and functions. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2003 Red Hat, Inc. + * Copyright (C) 2003 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 "xdgmimeint.h" +#include <ctype.h> +#include <string.h> + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +static const char _xdg_utf8_skip_data[256] = { + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, + 1, 1, 1, 1, 1, 1, + 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, + 2, 2, 2, 2, 2, 2, + 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, + 5, 5, 6, 6, 1, 1 +}; + +const char *const _xdg_utf8_skip = _xdg_utf8_skip_data; + + + +/* Returns the number of unprocessed characters. */ +xdg_unichar_t +_xdg_utf8_to_ucs4 (const char *source) +{ + xdg_unichar_t ucs32; + if (!(*source & 0x80)) { + ucs32 = *source; + } else { + int bytelength = 0; + xdg_unichar_t result; + if (!(*source & 0x40)) { + ucs32 = *source; + } else { + if (!(*source & 0x20)) { + result = *source++ & 0x1F; + bytelength = 2; + } else if (!(*source & 0x10)) { + result = *source++ & 0x0F; + bytelength = 3; + } else if (!(*source & 0x08)) { + result = *source++ & 0x07; + bytelength = 4; + } else if (!(*source & 0x04)) { + result = *source++ & 0x03; + bytelength = 5; + } else if (!(*source & 0x02)) { + result = *source++ & 0x01; + bytelength = 6; + } else { + result = *source++; + bytelength = 1; + } + + for (bytelength--; bytelength > 0; bytelength--) { + result <<= 6; + result |= *source++ & 0x3F; + } + ucs32 = result; + } + } + return ucs32; +} + + +/* hullo. this is great code. don't rewrite it */ + +xdg_unichar_t +_xdg_ucs4_to_lower (xdg_unichar_t source) +{ + /* FIXME: Do a real to_upper sometime */ + /* CaseFolding-3.2.0.txt has a table of rules. */ + if ((source & 0xFF) == source) + return (xdg_unichar_t) tolower ((unsigned char) source); + return source; +} + +int +_xdg_utf8_validate (const char *source) +{ + /* FIXME: actually write */ + return TRUE; +} + +const char * +_xdg_get_base_name (const char *file_name) +{ + const char *base_name; + + if (file_name == NULL) + return NULL; + + base_name = strrchr (file_name, '/'); + + if (base_name == NULL) + return file_name; + else + return base_name + 1; +} + +xdg_unichar_t * +_xdg_convert_to_ucs4 (const char *source, int *len) +{ + xdg_unichar_t *out; + int i; + const char *p; + + out = malloc (sizeof (xdg_unichar_t) * (strlen (source) + 1)); + + p = source; + i = 0; + while (*p) { + out[i++] = _xdg_utf8_to_ucs4 (p); + p = _xdg_utf8_next_char (p); + } + out[i] = 0; + *len = i; + + return out; +} + +void +_xdg_reverse_ucs4 (xdg_unichar_t * source, int len) +{ + xdg_unichar_t c; + int i; + + for (i = 0; i < len - i - 1; i++) { + c = source[i]; + source[i] = source[len - i - 1]; + source[len - i - 1] = c; + } +} diff --git a/gst/xdgmime/xdgmime/xdgmimeint.h b/gst/xdgmime/xdgmime/xdgmimeint.h new file mode 100644 index 00000000..232c8089 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeint.h @@ -0,0 +1,77 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeint.h: Internal defines and functions. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2003 Red Hat, Inc. + * Copyright (C) 2003 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. + */ + +#ifndef __XDG_MIME_INT_H__ +#define __XDG_MIME_INT_H__ + +#include "xdgmime.h" + + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +/* FIXME: Needs to be configure check */ +typedef unsigned int xdg_unichar_t; +typedef unsigned char xdg_uchar8_t; +typedef unsigned short xdg_uint16_t; +typedef unsigned int xdg_uint32_t; + +#ifdef XDG_PREFIX +#define _xdg_utf8_skip XDG_RESERVED_ENTRY(utf8_skip) +#define _xdg_utf8_to_ucs4 XDG_RESERVED_ENTRY(utf8_to_ucs4) +#define _xdg_ucs4_to_lower XDG_RESERVED_ENTRY(ucs4_to_lower) +#define _xdg_utf8_validate XDG_RESERVED_ENTRY(utf8_validate) +#define _xdg_get_base_name XDG_RESERVED_ENTRY(get_base_name) +#define _xdg_convert_to_ucs4 XDG_RESERVED_ENTRY(convert_to_ucs4) +#define _xdg_reverse_ucs4 XDG_RESERVED_ENTRY(reverse_ucs4) +#endif + +#define SWAP_BE16_TO_LE16(val) (xdg_uint16_t)(((xdg_uint16_t)(val) << 8)|((xdg_uint16_t)(val) >> 8)) + +#define SWAP_BE32_TO_LE32(val) (xdg_uint32_t)((((xdg_uint32_t)(val) & 0xFF000000U) >> 24) | \ + (((xdg_uint32_t)(val) & 0x00FF0000U) >> 8) | \ + (((xdg_uint32_t)(val) & 0x0000FF00U) << 8) | \ + (((xdg_uint32_t)(val) & 0x000000FFU) << 24)) +/* UTF-8 utils + */ +extern const char *const _xdg_utf8_skip; +#define _xdg_utf8_next_char(p) (char *)((p) + _xdg_utf8_skip[*(unsigned char *)(p)]) +#define _xdg_utf8_char_size(p) (int) (_xdg_utf8_skip[*(unsigned char *)(p)]) + +xdg_unichar_t _xdg_utf8_to_ucs4 (const char *source); +xdg_unichar_t _xdg_ucs4_to_lower (xdg_unichar_t source); +int _xdg_utf8_validate (const char *source); +xdg_unichar_t *_xdg_convert_to_ucs4 (const char *source, int *len); +void _xdg_reverse_ucs4 (xdg_unichar_t *source, int len); +const char *_xdg_get_base_name (const char *file_name); + +#endif /* __XDG_MIME_INT_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimemagic.c b/gst/xdgmime/xdgmime/xdgmimemagic.c new file mode 100644 index 00000000..814750eb --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimemagic.c @@ -0,0 +1,738 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimemagic.: Private file. Datastructure for storing magic files. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2003 Red Hat, Inc. + * Copyright (C) 2003 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 <assert.h> +#include "xdgmimemagic.h" +#include "xdgmimeint.h" +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> +#include <limits.h> + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +#if !defined getc_unlocked && !defined HAVE_GETC_UNLOCKED +# define getc_unlocked(fp) getc (fp) +#endif + +typedef struct XdgMimeMagicMatch XdgMimeMagicMatch; +typedef struct XdgMimeMagicMatchlet XdgMimeMagicMatchlet; + +typedef enum +{ + XDG_MIME_MAGIC_SECTION, + XDG_MIME_MAGIC_MAGIC, + XDG_MIME_MAGIC_ERROR, + XDG_MIME_MAGIC_EOF +} XdgMimeMagicState; + +struct XdgMimeMagicMatch +{ + const char *mime_type; + int priority; + XdgMimeMagicMatchlet *matchlet; + XdgMimeMagicMatch *next; +}; + + +struct XdgMimeMagicMatchlet +{ + int indent; + int offset; + unsigned int value_length; + unsigned char *value; + unsigned char *mask; + unsigned int range_length; + unsigned int word_size; + XdgMimeMagicMatchlet *next; +}; + + +struct XdgMimeMagic +{ + XdgMimeMagicMatch *match_list; + int max_extent; +}; + +static XdgMimeMagicMatch * +_xdg_mime_magic_match_new (void) +{ + return calloc (1, sizeof (XdgMimeMagicMatch)); +} + + +static XdgMimeMagicMatchlet * +_xdg_mime_magic_matchlet_new (void) +{ + XdgMimeMagicMatchlet *matchlet; + + matchlet = malloc (sizeof (XdgMimeMagicMatchlet)); + + matchlet->indent = 0; + matchlet->offset = 0; + matchlet->value_length = 0; + matchlet->value = NULL; + matchlet->mask = NULL; + matchlet->range_length = 1; + matchlet->word_size = 1; + matchlet->next = NULL; + + return matchlet; +} + + +static void +_xdg_mime_magic_matchlet_free (XdgMimeMagicMatchlet * mime_magic_matchlet) +{ + if (mime_magic_matchlet) { + if (mime_magic_matchlet->next) + _xdg_mime_magic_matchlet_free (mime_magic_matchlet->next); + if (mime_magic_matchlet->value) + free (mime_magic_matchlet->value); + if (mime_magic_matchlet->mask) + free (mime_magic_matchlet->mask); + free (mime_magic_matchlet); + } +} + + +/* Frees mime_magic_match and the remainder of its list + */ +static void +_xdg_mime_magic_match_free (XdgMimeMagicMatch * mime_magic_match) +{ + XdgMimeMagicMatch *ptr, *next; + + ptr = mime_magic_match; + while (ptr) { + next = ptr->next; + + if (ptr->mime_type) + free ((void *) ptr->mime_type); + if (ptr->matchlet) + _xdg_mime_magic_matchlet_free (ptr->matchlet); + free (ptr); + + ptr = next; + } +} + +/* Reads in a hunk of data until a newline character or a '\000' is hit. The + * returned string is null terminated, and doesn't include the newline. + */ +static unsigned char * +_xdg_mime_magic_read_to_newline (FILE * magic_file, int *end_of_file) +{ + unsigned char *retval; + int c; + int len, pos; + + len = 128; + pos = 0; + retval = malloc (len); + *end_of_file = FALSE; + + while (TRUE) { + c = getc_unlocked (magic_file); + if (c == EOF) { + *end_of_file = TRUE; + break; + } + if (c == '\n' || c == '\000') + break; + retval[pos++] = (unsigned char) c; + if (pos % 128 == 127) { + len = len + 128; + retval = realloc (retval, len); + } + } + + retval[pos] = '\000'; + return retval; +} + +/* Returns the number read from the file, or -1 if no number could be read. + */ +static int +_xdg_mime_magic_read_a_number (FILE * magic_file, int *end_of_file) +{ + /* LONG_MAX is about 20 characters on my system */ +#define MAX_NUMBER_SIZE 30 + char number_string[MAX_NUMBER_SIZE + 1]; + int pos = 0; + int c; + long retval = -1; + + while (TRUE) { + c = getc_unlocked (magic_file); + + if (c == EOF) { + *end_of_file = TRUE; + break; + } + if (!isdigit (c)) { + ungetc (c, magic_file); + break; + } + number_string[pos] = (char) c; + pos++; + if (pos == MAX_NUMBER_SIZE) + break; + } + if (pos > 0) { + number_string[pos] = '\000'; + errno = 0; + retval = strtol (number_string, NULL, 10); + + if ((retval < INT_MIN) || (retval > INT_MAX) || (errno != 0)) + return -1; + } + + return retval; +} + +/* Headers are of the format: + * [<priority>:<mime-type>] + */ +static XdgMimeMagicState +_xdg_mime_magic_parse_header (FILE * magic_file, XdgMimeMagicMatch * match) +{ + int c; + char *buffer; + char *end_ptr; + int end_of_file = 0; + + assert (magic_file != NULL); + assert (match != NULL); + + c = getc_unlocked (magic_file); + if (c == EOF) + return XDG_MIME_MAGIC_EOF; + if (c != '[') + return XDG_MIME_MAGIC_ERROR; + + match->priority = _xdg_mime_magic_read_a_number (magic_file, &end_of_file); + if (end_of_file) + return XDG_MIME_MAGIC_EOF; + if (match->priority == -1) + return XDG_MIME_MAGIC_ERROR; + + c = getc_unlocked (magic_file); + if (c == EOF) + return XDG_MIME_MAGIC_EOF; + if (c != ':') + return XDG_MIME_MAGIC_ERROR; + + buffer = (char *) _xdg_mime_magic_read_to_newline (magic_file, &end_of_file); + if (end_of_file) + return XDG_MIME_MAGIC_EOF; + + end_ptr = buffer; + while (*end_ptr != ']' && *end_ptr != '\000' && *end_ptr != '\n') + end_ptr++; + if (*end_ptr != ']') { + free (buffer); + return XDG_MIME_MAGIC_ERROR; + } + *end_ptr = '\000'; + + match->mime_type = strdup (buffer); + free (buffer); + + return XDG_MIME_MAGIC_MAGIC; +} + +static XdgMimeMagicState +_xdg_mime_magic_parse_error (FILE * magic_file) +{ + int c; + + while (1) { + c = getc_unlocked (magic_file); + if (c == EOF) + return XDG_MIME_MAGIC_EOF; + if (c == '\n') + return XDG_MIME_MAGIC_SECTION; + } +} + +/* Headers are of the format: + * [ indent ] ">" start-offset "=" value + * [ "&" mask ] [ "~" word-size ] [ "+" range-length ] "\n" + */ +static XdgMimeMagicState +_xdg_mime_magic_parse_magic_line (FILE * magic_file, XdgMimeMagicMatch * match) +{ + XdgMimeMagicMatchlet *matchlet; + int c; + int end_of_file; + int indent = 0; + int bytes_read; + + assert (magic_file != NULL); + + /* Sniff the buffer to make sure it's a valid line */ + c = getc_unlocked (magic_file); + if (c == EOF) + return XDG_MIME_MAGIC_EOF; + else if (c == '[') { + ungetc (c, magic_file); + return XDG_MIME_MAGIC_SECTION; + } else if (c == '\n') + return XDG_MIME_MAGIC_MAGIC; + + /* At this point, it must be a digit or a '>' */ + end_of_file = FALSE; + if (isdigit (c)) { + ungetc (c, magic_file); + indent = _xdg_mime_magic_read_a_number (magic_file, &end_of_file); + if (end_of_file) + return XDG_MIME_MAGIC_EOF; + if (indent == -1) + return XDG_MIME_MAGIC_ERROR; + c = getc_unlocked (magic_file); + if (c == EOF) + return XDG_MIME_MAGIC_EOF; + } + + if (c != '>') + return XDG_MIME_MAGIC_ERROR; + + matchlet = _xdg_mime_magic_matchlet_new (); + matchlet->indent = indent; + matchlet->offset = _xdg_mime_magic_read_a_number (magic_file, &end_of_file); + if (end_of_file) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_EOF; + } + if (matchlet->offset == -1) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + c = getc_unlocked (magic_file); + if (c == EOF) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_EOF; + } else if (c != '=') { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + + /* Next two bytes determine how long the value is */ + matchlet->value_length = 0; + c = getc_unlocked (magic_file); + if (c == EOF) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_EOF; + } + matchlet->value_length = c & 0xFF; + matchlet->value_length = matchlet->value_length << 8; + + c = getc_unlocked (magic_file); + if (c == EOF) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_EOF; + } + matchlet->value_length = matchlet->value_length + (c & 0xFF); + + matchlet->value = malloc (matchlet->value_length); + + /* OOM */ + if (matchlet->value == NULL) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + bytes_read = fread (matchlet->value, 1, matchlet->value_length, magic_file); + if (bytes_read != matchlet->value_length) { + _xdg_mime_magic_matchlet_free (matchlet); + if (feof (magic_file)) + return XDG_MIME_MAGIC_EOF; + else + return XDG_MIME_MAGIC_ERROR; + } + + c = getc_unlocked (magic_file); + if (c == '&') { + matchlet->mask = malloc (matchlet->value_length); + /* OOM */ + if (matchlet->mask == NULL) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + bytes_read = fread (matchlet->mask, 1, matchlet->value_length, magic_file); + if (bytes_read != matchlet->value_length) { + _xdg_mime_magic_matchlet_free (matchlet); + if (feof (magic_file)) + return XDG_MIME_MAGIC_EOF; + else + return XDG_MIME_MAGIC_ERROR; + } + c = getc_unlocked (magic_file); + } + + if (c == '~') { + matchlet->word_size = + _xdg_mime_magic_read_a_number (magic_file, &end_of_file); + if (end_of_file) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_EOF; + } + if (matchlet->word_size != 0 && + matchlet->word_size != 1 && + matchlet->word_size != 2 && matchlet->word_size != 4) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + c = getc_unlocked (magic_file); + } + + if (c == '+') { + matchlet->range_length = + _xdg_mime_magic_read_a_number (magic_file, &end_of_file); + if (end_of_file) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_EOF; + } + if (matchlet->range_length == -1) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + c = getc_unlocked (magic_file); + } + + + if (c == '\n') { + /* We clean up the matchlet, byte swapping if needed */ + if (matchlet->word_size > 1) { + int i; + if (matchlet->value_length % matchlet->word_size != 0) { + _xdg_mime_magic_matchlet_free (matchlet); + return XDG_MIME_MAGIC_ERROR; + } + /* FIXME: need to get this defined in a <config.h> style file */ +#if LITTLE_ENDIAN + for (i = 0; i < matchlet->value_length; i = i + matchlet->word_size) { + if (matchlet->word_size == 2) + *((xdg_uint16_t *) matchlet->value + i) = + SWAP_BE16_TO_LE16 (*((xdg_uint16_t *) (matchlet->value + i))); + else if (matchlet->word_size == 4) + *((xdg_uint32_t *) matchlet->value + i) = + SWAP_BE32_TO_LE32 (*((xdg_uint32_t *) (matchlet->value + i))); + if (matchlet->mask) { + if (matchlet->word_size == 2) + *((xdg_uint16_t *) matchlet->mask + i) = + SWAP_BE16_TO_LE16 (*((xdg_uint16_t *) (matchlet->mask + i))); + else if (matchlet->word_size == 4) + *((xdg_uint32_t *) matchlet->mask + i) = + SWAP_BE32_TO_LE32 (*((xdg_uint32_t *) (matchlet->mask + i))); + + } + } +#endif + } + + matchlet->next = match->matchlet; + match->matchlet = matchlet; + + + return XDG_MIME_MAGIC_MAGIC; + } + + _xdg_mime_magic_matchlet_free (matchlet); + if (c == EOF) + return XDG_MIME_MAGIC_EOF; + + return XDG_MIME_MAGIC_ERROR; +} + +static int +_xdg_mime_magic_matchlet_compare_to_data (XdgMimeMagicMatchlet * matchlet, + const void *data, size_t len) +{ + int i, j; + for (i = matchlet->offset; i < matchlet->offset + matchlet->range_length; i++) { + int valid_matchlet = TRUE; + + if (i + matchlet->value_length > len) + return FALSE; + + if (matchlet->mask) { + for (j = 0; j < matchlet->value_length; j++) { + if ((matchlet->value[j] & matchlet->mask[j]) != + ((((unsigned char *) data)[j + i]) & matchlet->mask[j])) { + valid_matchlet = FALSE; + break; + } + } + } else { + for (j = 0; j < matchlet->value_length; j++) { + if (matchlet->value[j] != ((unsigned char *) data)[j + i]) { + valid_matchlet = FALSE; + break; + } + } + } + if (valid_matchlet) + return TRUE; + } + return FALSE; +} + +static int +_xdg_mime_magic_matchlet_compare_level (XdgMimeMagicMatchlet * matchlet, + const void *data, size_t len, int indent) +{ + while ((matchlet != NULL) && (matchlet->indent == indent)) { + if (_xdg_mime_magic_matchlet_compare_to_data (matchlet, data, len)) { + if ((matchlet->next == NULL) || (matchlet->next->indent <= indent)) + return TRUE; + + if (_xdg_mime_magic_matchlet_compare_level (matchlet->next, + data, len, indent + 1)) + return TRUE; + } + + do { + matchlet = matchlet->next; + } + while (matchlet && matchlet->indent > indent); + } + + return FALSE; +} + +static int +_xdg_mime_magic_match_compare_to_data (XdgMimeMagicMatch * match, + const void *data, size_t len) +{ + return _xdg_mime_magic_matchlet_compare_level (match->matchlet, data, len, 0); +} + +static void +_xdg_mime_magic_insert_match (XdgMimeMagic * mime_magic, + XdgMimeMagicMatch * match) +{ + XdgMimeMagicMatch *list; + + if (mime_magic->match_list == NULL) { + mime_magic->match_list = match; + return; + } + + if (match->priority > mime_magic->match_list->priority) { + match->next = mime_magic->match_list; + mime_magic->match_list = match; + return; + } + + list = mime_magic->match_list; + while (list->next != NULL) { + if (list->next->priority < match->priority) { + match->next = list->next; + list->next = match; + return; + } + list = list->next; + } + list->next = match; + match->next = NULL; +} + +XdgMimeMagic * +_xdg_mime_magic_new (void) +{ + return calloc (1, sizeof (XdgMimeMagic)); +} + +void +_xdg_mime_magic_free (XdgMimeMagic * mime_magic) +{ + if (mime_magic) { + _xdg_mime_magic_match_free (mime_magic->match_list); + free (mime_magic); + } +} + +int +_xdg_mime_magic_get_buffer_extents (XdgMimeMagic * mime_magic) +{ + return mime_magic->max_extent; +} + +const char * +_xdg_mime_magic_lookup_data (XdgMimeMagic * mime_magic, + const void *data, + size_t len, int *result_prio, const char *mime_types[], int n_mime_types) +{ + XdgMimeMagicMatch *match; + const char *mime_type; + int n; + int prio; + + prio = 0; + mime_type = NULL; + for (match = mime_magic->match_list; match; match = match->next) { + if (_xdg_mime_magic_match_compare_to_data (match, data, len)) { + prio = match->priority; + mime_type = match->mime_type; + break; + } else { + for (n = 0; n < n_mime_types; n++) { + if (mime_types[n] && + _xdg_mime_mime_type_equal (mime_types[n], match->mime_type)) + mime_types[n] = NULL; + } + } + } + + if (mime_type == NULL) { + for (n = 0; n < n_mime_types; n++) { + if (mime_types[n]) + mime_type = mime_types[n]; + } + } + + if (result_prio) + *result_prio = prio; + + return mime_type; +} + +static void +_xdg_mime_update_mime_magic_extents (XdgMimeMagic * mime_magic) +{ + XdgMimeMagicMatch *match; + int max_extent = 0; + + for (match = mime_magic->match_list; match; match = match->next) { + XdgMimeMagicMatchlet *matchlet; + + for (matchlet = match->matchlet; matchlet; matchlet = matchlet->next) { + int extent; + + extent = + matchlet->value_length + matchlet->offset + matchlet->range_length; + if (max_extent < extent) + max_extent = extent; + } + } + + mime_magic->max_extent = max_extent; +} + +static XdgMimeMagicMatchlet * +_xdg_mime_magic_matchlet_mirror (XdgMimeMagicMatchlet * matchlets) +{ + XdgMimeMagicMatchlet *new_list; + XdgMimeMagicMatchlet *tmp; + + if ((matchlets == NULL) || (matchlets->next == NULL)) + return matchlets; + + new_list = NULL; + tmp = matchlets; + while (tmp != NULL) { + XdgMimeMagicMatchlet *matchlet; + + matchlet = tmp; + tmp = tmp->next; + matchlet->next = new_list; + new_list = matchlet; + } + + return new_list; + +} + +static void +_xdg_mime_magic_read_magic_file (XdgMimeMagic * mime_magic, FILE * magic_file) +{ + XdgMimeMagicState state; + XdgMimeMagicMatch *match = NULL; /* Quiet compiler */ + + state = XDG_MIME_MAGIC_SECTION; + + while (state != XDG_MIME_MAGIC_EOF) { + switch (state) { + case XDG_MIME_MAGIC_SECTION: + match = _xdg_mime_magic_match_new (); + state = _xdg_mime_magic_parse_header (magic_file, match); + if (state == XDG_MIME_MAGIC_EOF || state == XDG_MIME_MAGIC_ERROR) + _xdg_mime_magic_match_free (match); + break; + case XDG_MIME_MAGIC_MAGIC: + state = _xdg_mime_magic_parse_magic_line (magic_file, match); + if (state == XDG_MIME_MAGIC_SECTION || + (state == XDG_MIME_MAGIC_EOF && match->mime_type)) { + match->matchlet = _xdg_mime_magic_matchlet_mirror (match->matchlet); + _xdg_mime_magic_insert_match (mime_magic, match); + } else if (state == XDG_MIME_MAGIC_EOF || state == XDG_MIME_MAGIC_ERROR) + _xdg_mime_magic_match_free (match); + break; + case XDG_MIME_MAGIC_ERROR: + state = _xdg_mime_magic_parse_error (magic_file); + break; + case XDG_MIME_MAGIC_EOF: + default: + /* Make the compiler happy */ + assert (0); + } + } + _xdg_mime_update_mime_magic_extents (mime_magic); +} + +void +_xdg_mime_magic_read_from_file (XdgMimeMagic * mime_magic, + const char *file_name) +{ + FILE *magic_file; + char header[12]; + + magic_file = fopen (file_name, "r"); + + if (magic_file == NULL) + return; + + if (fread (header, 1, 12, magic_file) == 12) { + if (memcmp ("MIME-Magic\0\n", header, 12) == 0) + _xdg_mime_magic_read_magic_file (mime_magic, magic_file); + } + + fclose (magic_file); +} diff --git a/gst/xdgmime/xdgmime/xdgmimemagic.h b/gst/xdgmime/xdgmime/xdgmimemagic.h new file mode 100644 index 00000000..35c8039c --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimemagic.h @@ -0,0 +1,57 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimemagic.h: Private file. Datastructure for storing the magic files. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2003 Red Hat, Inc. + * Copyright (C) 2003 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. + */ + +#ifndef __XDG_MIME_MAGIC_H__ +#define __XDG_MIME_MAGIC_H__ + +#include <unistd.h> +#include "xdgmime.h" +typedef struct XdgMimeMagic XdgMimeMagic; + +#ifdef XDG_PREFIX +#define _xdg_mime_glob_read_from_file XDG_RESERVED_ENTRY(glob_read_from_file) +#define _xdg_mime_magic_new XDG_RESERVED_ENTRY(magic_new) +#define _xdg_mime_magic_read_from_file XDG_RESERVED_ENTRY(magic_read_from_file) +#define _xdg_mime_magic_free XDG_RESERVED_ENTRY(magic_free) +#define _xdg_mime_magic_get_buffer_extents XDG_RESERVED_ENTRY(magic_get_buffer_extents) +#define _xdg_mime_magic_lookup_data XDG_RESERVED_ENTRY(magic_lookup_data) +#endif + + +XdgMimeMagic *_xdg_mime_magic_new (void); +void _xdg_mime_magic_read_from_file (XdgMimeMagic *mime_magic, + const char *file_name); +void _xdg_mime_magic_free (XdgMimeMagic *mime_magic); +int _xdg_mime_magic_get_buffer_extents (XdgMimeMagic *mime_magic); +const char *_xdg_mime_magic_lookup_data (XdgMimeMagic *mime_magic, + const void *data, + size_t len, + int *result_prio, + const char *mime_types[], + int n_mime_types); + +#endif /* __XDG_MIME_MAGIC_H__ */ diff --git a/gst/xdgmime/xdgmime/xdgmimeparent.c b/gst/xdgmime/xdgmime/xdgmimeparent.c new file mode 100644 index 00000000..e29fedad --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeparent.c @@ -0,0 +1,202 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimealias.c: Private file. Datastructure for storing the hierarchy. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2004 Red Hat, Inc. + * Copyright (C) 2004 Matthias Clasen <mclasen@redhat.com> + * + * 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 "xdgmimeparent.h" +#include "xdgmimeint.h" +#include <stdlib.h> +#include <stdio.h> +#include <assert.h> +#include <string.h> +#include <fnmatch.h> + +#ifndef FALSE +#define FALSE (0) +#endif + +#ifndef TRUE +#define TRUE (!FALSE) +#endif + +typedef struct XdgMimeParents XdgMimeParents; + +struct XdgMimeParents +{ + char *mime; + char **parents; + int n_parents; +}; + +struct XdgParentList +{ + struct XdgMimeParents *parents; + int n_mimes; +}; + +XdgParentList * +_xdg_mime_parent_list_new (void) +{ + XdgParentList *list; + + list = malloc (sizeof (XdgParentList)); + + list->parents = NULL; + list->n_mimes = 0; + + return list; +} + +void +_xdg_mime_parent_list_free (XdgParentList * list) +{ + int i; + char **p; + + if (list->parents) { + for (i = 0; i < list->n_mimes; i++) { + for (p = list->parents[i].parents; *p; p++) + free (*p); + + free (list->parents[i].parents); + free (list->parents[i].mime); + } + free (list->parents); + } + free (list); +} + +static int +parent_entry_cmp (const void *v1, const void *v2) +{ + return strcmp (((XdgMimeParents *) v1)->mime, ((XdgMimeParents *) v2)->mime); +} + +const char ** +_xdg_mime_parent_list_lookup (XdgParentList * list, const char *mime) +{ + XdgMimeParents *entry; + XdgMimeParents key; + + if (list->n_mimes > 0) { + key.mime = (char *) mime; + key.parents = NULL; + + entry = bsearch (&key, list->parents, list->n_mimes, + sizeof (XdgMimeParents), &parent_entry_cmp); + if (entry) + return (const char **) entry->parents; + } + + return NULL; +} + +void +_xdg_mime_parent_read_from_file (XdgParentList * list, const char *file_name) +{ + FILE *file; + char line[255]; + int i, alloc; + XdgMimeParents *entry; + + file = fopen (file_name, "r"); + + if (file == NULL) + return; + + /* FIXME: Not UTF-8 safe. Doesn't work if lines are greater than 255 chars. + * Blah */ + alloc = list->n_mimes + 16; + list->parents = realloc (list->parents, alloc * sizeof (XdgMimeParents)); + while (fgets (line, 255, file) != NULL) { + char *sep; + if (line[0] == '#') + continue; + + sep = strchr (line, ' '); + if (sep == NULL) + continue; + *(sep++) = '\000'; + sep[strlen (sep) - 1] = '\000'; + entry = NULL; + for (i = 0; i < list->n_mimes; i++) { + if (strcmp (list->parents[i].mime, line) == 0) { + entry = &(list->parents[i]); + break; + } + } + + if (!entry) { + if (list->n_mimes == alloc) { + alloc <<= 1; + list->parents = realloc (list->parents, + alloc * sizeof (XdgMimeParents)); + } + list->parents[list->n_mimes].mime = strdup (line); + list->parents[list->n_mimes].parents = NULL; + entry = &(list->parents[list->n_mimes]); + list->n_mimes++; + } + + if (!entry->parents) { + entry->n_parents = 1; + entry->parents = malloc ((entry->n_parents + 1) * sizeof (char *)); + } else { + entry->n_parents += 1; + entry->parents = realloc (entry->parents, + (entry->n_parents + 2) * sizeof (char *)); + } + entry->parents[entry->n_parents - 1] = strdup (sep); + entry->parents[entry->n_parents] = NULL; + } + + list->parents = realloc (list->parents, + list->n_mimes * sizeof (XdgMimeParents)); + + fclose (file); + + if (list->n_mimes > 1) + qsort (list->parents, list->n_mimes, + sizeof (XdgMimeParents), &parent_entry_cmp); +} + + +void +_xdg_mime_parent_list_dump (XdgParentList * list) +{ + int i; + char **p; + + if (list->parents) { + for (i = 0; i < list->n_mimes; i++) { + for (p = list->parents[i].parents; *p; p++) + printf ("%s %s\n", list->parents[i].mime, *p); + } + } +} diff --git a/gst/xdgmime/xdgmime/xdgmimeparent.h b/gst/xdgmime/xdgmime/xdgmimeparent.h new file mode 100644 index 00000000..b564f412 --- /dev/null +++ b/gst/xdgmime/xdgmime/xdgmimeparent.h @@ -0,0 +1,51 @@ +/* -*- mode: C; c-file-style: "gnu" -*- */ +/* xdgmimeparent.h: Private file. Datastructure for storing the hierarchy. + * + * More info can be found at http://www.freedesktop.org/standards/ + * + * Copyright (C) 2004 Red Hat, Inc. + * Copyright (C) 200 Matthias Clasen <mclasen@redhat.com> + * + * 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. + */ + +#ifndef __XDG_MIME_PARENT_H__ +#define __XDG_MIME_PARENT_H__ + +#include "xdgmime.h" + +typedef struct XdgParentList XdgParentList; + +#ifdef XDG_PREFIX +#define _xdg_mime_parent_read_from_file XDG_RESERVED_ENTRY(parent_read_from_file) +#define _xdg_mime_parent_list_new XDG_RESERVED_ENTRY(parent_list_new) +#define _xdg_mime_parent_list_free XDG_RESERVED_ENTRY(parent_list_free) +#define _xdg_mime_parent_list_lookup XDG_RESERVED_ENTRY(parent_list_lookup) +#define _xdg_mime_parent_list_dump XDG_RESERVED_ENTRY(parent_list_dump) +#endif + +void _xdg_mime_parent_read_from_file (XdgParentList *list, + const char *file_name); +XdgParentList *_xdg_mime_parent_list_new (void); +void _xdg_mime_parent_list_free (XdgParentList *list); +const char **_xdg_mime_parent_list_lookup (XdgParentList *list, + const char *mime); +void _xdg_mime_parent_list_dump (XdgParentList *list); + +#endif /* __XDG_MIME_PARENT_H__ */ |