/* GTK - The GIMP Toolkit * gtkfilesystem.c: Abstract file system interfaces * Copyright (C) 2003, Red Hat, Inc. * * 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. */ #include #include "gtkfilesystem.h" #include "gtkicontheme.h" #include "gtkmain.h" #include struct _GtkFileInfo { GtkFileTime modification_time; gint64 size; gchar *display_name; gchar *display_key; gchar *mime_type; guint is_folder : 1; guint is_hidden : 1; }; static void gtk_file_system_base_init (gpointer g_class); static void gtk_file_folder_base_init (gpointer g_class); GQuark gtk_file_system_error_quark (void) { static GQuark quark = 0; if (quark == 0) quark = g_quark_from_static_string ("gtk-file-system-error-quark"); return quark; } /***************************************** * GtkFileInfo * *****************************************/ GType gtk_file_info_get_type (void) { static GType our_type = 0; if (our_type == 0) our_type = g_boxed_type_register_static ("GtkFileInfo", (GBoxedCopyFunc) gtk_file_info_copy, (GBoxedFreeFunc) gtk_file_info_free); return our_type; } GtkFileInfo * gtk_file_info_new (void) { GtkFileInfo *info; info = g_new0 (GtkFileInfo, 1); return info; } GtkFileInfo * gtk_file_info_copy (GtkFileInfo *info) { GtkFileInfo *new_info; g_return_val_if_fail (info != NULL, NULL); new_info = g_memdup (info, sizeof (GtkFileInfo)); if (new_info->display_name) new_info->display_name = g_strdup (new_info->display_name); if (new_info->mime_type) new_info->mime_type = g_strdup (new_info->mime_type); return new_info; } void gtk_file_info_free (GtkFileInfo *info) { g_return_if_fail (info != NULL); if (info->display_name) g_free (info->display_name); if (info->mime_type) g_free (info->mime_type); if (info->display_key) g_free (info->display_key); g_free (info); } G_CONST_RETURN gchar * gtk_file_info_get_display_name (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, NULL); return info->display_name; } /** * gtk_file_info_get_display_key: * @info: a #GtkFileInfo * * Returns results of g_utf8_collate_key() on the display name * for @info. This is useful when sorting a bunch of #GtkFileInfo * structures since the collate key will be only computed once. * * Return value: The collate key for the display name, or %NULL * if the display name hasn't been set. **/ G_CONST_RETURN gchar * gtk_file_info_get_display_key (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, NULL); if (!info->display_key && info->display_name) { /* Since info->display_key is only a cache, we cast off the const */ ((GtkFileInfo *)info)->display_key = g_utf8_collate_key (info->display_name, -1); } return info->display_key; } void gtk_file_info_set_display_name (GtkFileInfo *info, const gchar *display_name) { g_return_if_fail (info != NULL); if (info->display_name) g_free (info->display_name); if (info->display_key) { g_free (info->display_key); info->display_key = NULL; } info->display_name = g_strdup (display_name); } gboolean gtk_file_info_get_is_folder (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, FALSE); return info->is_folder; } void gtk_file_info_set_is_folder (GtkFileInfo *info, gboolean is_folder) { g_return_if_fail (info != NULL); info->is_folder = is_folder != FALSE; } gboolean gtk_file_info_get_is_hidden (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, FALSE); return info->is_hidden; } void gtk_file_info_set_is_hidden (GtkFileInfo *info, gboolean is_hidden) { g_return_if_fail (info != NULL); info->is_hidden = is_hidden != FALSE; } G_CONST_RETURN gchar * gtk_file_info_get_mime_type (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, NULL); return info->mime_type; } void gtk_file_info_set_mime_type (GtkFileInfo *info, const gchar *mime_type) { g_return_if_fail (info != NULL); if (info->mime_type) g_free (info->mime_type); info->mime_type = g_strdup (mime_type); } GtkFileTime gtk_file_info_get_modification_time (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, 0); return info->modification_time; } void gtk_file_info_set_modification_time (GtkFileInfo *info, GtkFileTime modification_time) { g_return_if_fail (info != NULL); info->modification_time = modification_time; } gint64 gtk_file_info_get_size (const GtkFileInfo *info) { g_return_val_if_fail (info != NULL, 0); return info->size; } void gtk_file_info_set_size (GtkFileInfo *info, gint64 size) { g_return_if_fail (info != NULL); g_return_if_fail (size >= 0); info->size = size; } /***************************************** * GtkFileSystem * *****************************************/ GType gtk_file_system_get_type (void) { static GType file_system_type = 0; if (!file_system_type) { static const GTypeInfo file_system_info = { sizeof (GtkFileSystemIface), /* class_size */ gtk_file_system_base_init, /* base_init */ NULL, /* base_finalize */ }; file_system_type = g_type_register_static (G_TYPE_INTERFACE, "GtkFileSystem", &file_system_info, 0); g_type_interface_add_prerequisite (file_system_type, G_TYPE_OBJECT); } return file_system_type; } static void gtk_file_system_base_init (gpointer g_class) { static gboolean initialized = FALSE; if (!initialized) { GType iface_type = G_TYPE_FROM_INTERFACE (g_class); g_signal_new ("volumes-changed", iface_type, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkFileSystemIface, volumes_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); g_signal_new ("bookmarks-changed", iface_type, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkFileSystemIface, bookmarks_changed), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); initialized = TRUE; } } GSList * gtk_file_system_list_volumes (GtkFileSystem *file_system) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->list_volumes (file_system); } GtkFileFolder * gtk_file_system_get_folder (GtkFileSystem *file_system, const GtkFilePath *path, GtkFileInfoType types, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (path != NULL, NULL); g_return_val_if_fail (error == NULL || *error == NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->get_folder (file_system, path, types, error); } gboolean gtk_file_system_create_folder(GtkFileSystem *file_system, const GtkFilePath *path, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (path != NULL, FALSE); g_return_val_if_fail (error == NULL || *error == NULL, FALSE); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->create_folder (file_system, path, error); } /** * gtk_file_system_get_volume_for_path: * @file_system: a #GtkFileSystem * @path: a #GtkFilePath * * Queries the file system volume that corresponds to a specific path. * * Return value: the #GtkFileSystemVolume that corresponds to the specified * @path. You should free this value with gtk_file_system_volume_free(). **/ GtkFileSystemVolume * gtk_file_system_get_volume_for_path (GtkFileSystem *file_system, const GtkFilePath *path) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (path != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->get_volume_for_path (file_system, path); } /** * gtk_file_system_volume_free: * @file_system: a #GtkFileSystem * @volume: a #GtkFileSystemVolume * * Frees a #GtkFileSystemVolume structure as returned by * gtk_file_system_list_volumes(). **/ void gtk_file_system_volume_free (GtkFileSystem *file_system, GtkFileSystemVolume *volume) { g_return_if_fail (GTK_IS_FILE_SYSTEM (file_system)); g_return_if_fail (volume != NULL); GTK_FILE_SYSTEM_GET_IFACE (file_system)->volume_free (file_system, volume); } /** * gtk_file_system_volume_get_base_path: * @file_system: a #GtkFileSystem * @volume: a #GtkFileSystemVolume * * Queries the base path for a volume. For example, a CD-ROM device may yield a * path of "/mnt/cdrom". * * Return value: a #GtkFilePath with the base mount path of the specified * @volume. **/ GtkFilePath * gtk_file_system_volume_get_base_path (GtkFileSystem *file_system, GtkFileSystemVolume *volume) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (volume != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->volume_get_base_path (file_system, volume); } /** * gtk_file_system_volume_get_is_mounted: * @file_system: a #GtkFileSystem * @volume: a #GtkFileSystemVolume * * Queries whether a #GtkFileSystemVolume is mounted or not. If it is not, it * can be mounted with gtk_file_system_volume_mount(). * * Return value: TRUE if the @volume is mounted, FALSE otherwise. **/ gboolean gtk_file_system_volume_get_is_mounted (GtkFileSystem *file_system, GtkFileSystemVolume *volume) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (volume != NULL, FALSE); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->volume_get_is_mounted (file_system, volume); } /** * gtk_file_system_volume_mount: * @file_system: a #GtkFileSystem * @volume: a #GtkFileSystemVolume * @error: location to store error, or %NULL * * Tries to mount an unmounted volume. This may cause the "volumes-changed" * signal in the @file_system to be emitted. * * Return value: TRUE if the @volume was mounted successfully, FALSE otherwise. **/ gboolean gtk_file_system_volume_mount (GtkFileSystem *file_system, GtkFileSystemVolume *volume, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (volume != NULL, FALSE); g_return_val_if_fail (error == NULL || *error == NULL, FALSE); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->volume_mount (file_system, volume, error); } /** * gtk_file_system_volume_get_display_name: * @file_system: a #GtkFileSystem * @volume: a #GtkFileSystemVolume * * Queries the human-readable name for a @volume. This string can be displayed * in a list of volumes that can be accessed, for example. * * Return value: A string with the human-readable name for a #GtkFileSystemVolume. **/ char * gtk_file_system_volume_get_display_name (GtkFileSystem *file_system, GtkFileSystemVolume *volume) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (volume != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->volume_get_display_name (file_system, volume); } /** * gtk_file_system_volume_render_icon: * @file_system: a #GtkFileSystem * @volume: a #GtkFileSystemVolume * @widget: Reference widget to render icons. * @pixel_size: Size of the icon. * @error: location to store error, or %NULL * * Renders an icon suitable for a file #GtkFileSystemVolume. * * Return value: A #GdkPixbuf containing an icon, or NULL if the icon could not * be rendered. In the latter case, the @error value will be set as * appropriate. **/ GdkPixbuf * gtk_file_system_volume_render_icon (GtkFileSystem *file_system, GtkFileSystemVolume *volume, GtkWidget *widget, gint pixel_size, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (volume != NULL, NULL); g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL); g_return_val_if_fail (pixel_size > 0, NULL); g_return_val_if_fail (error == NULL || *error == NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->volume_render_icon (file_system, volume, widget, pixel_size, error); } /** * gtk_file_system_get_parent: * @file_system: a #GtkFileSystem * @path: base path name * @parent: location to store parent path name * @error: location to store error, or %NULL * * Gets the name of the parent folder of a path. If the path has no parent, as when * you request the parent of a file system root, then @parent will be set to %NULL. * * Return value: %TRUE if the operation was successful: @parent will be set to * the name of the @path's parent, or to %NULL if @path is already a file system * root. If the operation fails, this function returns %FALSE, sets @parent to * NULL, and sets the @error value if it is specified. **/ gboolean gtk_file_system_get_parent (GtkFileSystem *file_system, const GtkFilePath *path, GtkFilePath **parent, GError **error) { gboolean result; g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (path != NULL, FALSE); g_return_val_if_fail (parent != NULL, FALSE); g_return_val_if_fail (error == NULL || *error == NULL, FALSE); *parent = NULL; result = GTK_FILE_SYSTEM_GET_IFACE (file_system)->get_parent (file_system, path, parent, error); g_assert (result || *parent == NULL); return result; } GtkFilePath * gtk_file_system_make_path (GtkFileSystem *file_system, const GtkFilePath *base_path, const gchar *display_name, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (base_path != NULL, NULL); g_return_val_if_fail (display_name != NULL, NULL); g_return_val_if_fail (error == NULL || *error == NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->make_path (file_system, base_path, display_name, error); } /** * gtk_file_system_parse: * @file_system: a #GtkFileSystem * @base_path: reference folder with respect to which relative * paths should be interpreted. * @str: the string to parse * @folder: location to store folder portion of result, or %NULL * @file_part: location to store file portion of result, or %NULL * @error: location to store error, or %NULL * * Given a string entered by a user, parse it (possibly using * heuristics) into a folder path and a UTF-8 encoded * filename part. (Suitable for passing to gtk_file_system_make_path()) * * Note that the returned filename point may point to a subfolder * of the returned folder. Adding a trailing path separator is needed * to enforce the interpretation as a folder name. * * If parsing fails because the syntax of @str is not understood, * and error of type GTK_FILE_SYSTEM_ERROR_BAD_FILENAME will * be set in @error and %FALSE returned. * * If parsing fails because a path was encountered that doesn't * exist on the filesystem, then an error of type * %GTK_FILE_SYSTEM_ERROR_NONEXISTENT will be set in @error * and %FALSE returned. (This only applies to parsing relative paths, * not to interpretation of @file_part. No check is made as * to whether @file_part exists.) * * Return value: %TRUE if the parsing succeeds, otherwise, %FALSE. **/ gboolean gtk_file_system_parse (GtkFileSystem *file_system, const GtkFilePath *base_path, const gchar *str, GtkFilePath **folder, gchar **file_part, GError **error) { GtkFilePath *tmp_folder = NULL; gchar *tmp_file_part = NULL; gboolean result; g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (base_path != NULL, FALSE); g_return_val_if_fail (error == NULL || *error == NULL, FALSE); result = GTK_FILE_SYSTEM_GET_IFACE (file_system)->parse (file_system, base_path, str, &tmp_folder, &tmp_file_part, error); g_assert (result || (tmp_folder == NULL && tmp_file_part == NULL)); if (folder) *folder = tmp_folder; else gtk_file_path_free (tmp_folder); if (file_part) *file_part = tmp_file_part; else g_free (tmp_file_part); return result; } gchar * gtk_file_system_path_to_uri (GtkFileSystem *file_system, const GtkFilePath *path) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (path != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->path_to_uri (file_system, path); } gchar * gtk_file_system_path_to_filename (GtkFileSystem *file_system, const GtkFilePath *path) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (path != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->path_to_filename (file_system, path); } GtkFilePath * gtk_file_system_uri_to_path (GtkFileSystem *file_system, const gchar *uri) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (uri != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->uri_to_path (file_system, uri); } GtkFilePath * gtk_file_system_filename_to_path (GtkFileSystem *file_system, const gchar *filename) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (filename != NULL, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->filename_to_path (file_system, filename); } GdkPixbuf * gtk_file_system_render_icon (GtkFileSystem *file_system, const GtkFilePath *path, GtkWidget *widget, gint pixel_size, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); g_return_val_if_fail (path != NULL, NULL); g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL); g_return_val_if_fail (pixel_size > 0, NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->render_icon (file_system, path, widget, pixel_size, error); } /** * gtk_file_system_insert_bookmark: * @file_system: a #GtkFileSystem * @path: path of the bookmark to add * @position: index in the bookmarks list at which the @path should be inserted; use 0 * for the beginning, and -1 or the number of bookmarks itself for the end of the list. * @error: location to store error, or %NULL * * Adds a path for a folder to the user's bookmarks list. If the operation * succeeds, the "bookmarks_changed" signal will be emitted. Bookmark paths are * unique; if you try to insert a @path that already exists, the operation will * fail and the @error will be set to #GTK_FILE_SYSTEM_ERROR_ALREADY_EXISTS. To * reorder the list of bookmarks, use gtk_file_system_remove_bookmark() to * remove the path in question, and call gtk_file_system_insert_bookmark() with * the new position for the path. * * Return value: TRUE if the operation succeeds, FALSE otherwise. In the latter case, * the @error value will be set. **/ gboolean gtk_file_system_insert_bookmark (GtkFileSystem *file_system, const GtkFilePath *path, gint position, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (path != NULL, FALSE); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->insert_bookmark (file_system, path, position, error); } /** * gtk_file_system_remove_bookmark: * @file_system: a #GtkFileSystem * @path: path of the bookmark to remove * @error: location to store error, or %NULL * * Removes a bookmark folder from the user's bookmarks list. If the operation * succeeds, the "bookmarks_changed" signal will be emitted. If you try to remove * a @path which does not exist in the bookmarks list, the operation will fail * and the @error will be set to GTK_FILE_SYSTEM_ERROR_NONEXISTENT. * * Return value: TRUE if the operation succeeds, FALSE otherwise. In the latter * case, the @error value will be set. **/ gboolean gtk_file_system_remove_bookmark (GtkFileSystem *file_system, const GtkFilePath *path, GError **error) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), FALSE); g_return_val_if_fail (path != NULL, FALSE); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->remove_bookmark (file_system, path, error); } /** * gtk_file_system_list_bookmarks: * @file_system: a #GtkFileSystem * * Queries the list of bookmarks in the file system. * * Return value: A list of #GtkFilePath, or NULL if there are no configured * bookmarks. You should use gtk_file_paths_free() to free this list. * * See also: gtk_file_system_get_supports_bookmarks() **/ GSList * gtk_file_system_list_bookmarks (GtkFileSystem *file_system) { g_return_val_if_fail (GTK_IS_FILE_SYSTEM (file_system), NULL); return GTK_FILE_SYSTEM_GET_IFACE (file_system)->list_bookmarks (file_system); } /***************************************** * GtkFileFolder * *****************************************/ GType gtk_file_folder_get_type (void) { static GType file_folder_type = 0; if (!file_folder_type) { static const GTypeInfo file_folder_info = { sizeof (GtkFileFolderIface), /* class_size */ gtk_file_folder_base_init, /* base_init */ NULL, /* base_finalize */ }; file_folder_type = g_type_register_static (G_TYPE_INTERFACE, "GtkFileFolder", &file_folder_info, 0); g_type_interface_add_prerequisite (file_folder_type, G_TYPE_OBJECT); } return file_folder_type; } static void gtk_file_folder_base_init (gpointer g_class) { static gboolean initialized = FALSE; if (!initialized) { GType iface_type = G_TYPE_FROM_INTERFACE (g_class); g_signal_new ("deleted", iface_type, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkFileFolderIface, deleted), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0); g_signal_new ("files-added", iface_type, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkFileFolderIface, files_added), NULL, NULL, g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); g_signal_new ("files-changed", iface_type, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkFileFolderIface, files_changed), NULL, NULL, g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); g_signal_new ("files-removed", iface_type, G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GtkFileFolderIface, files_removed), NULL, NULL, g_cclosure_marshal_VOID__POINTER, G_TYPE_NONE, 1, G_TYPE_POINTER); initialized = TRUE; } } gboolean gtk_file_folder_list_children (GtkFileFolder *folder, GSList **children, GError **error) { gboolean result; GSList *tmp_children = NULL; g_return_val_if_fail (GTK_IS_FILE_FOLDER (folder), FALSE); g_return_val_if_fail (error == NULL || *error == NULL, FALSE); result = GTK_FILE_FOLDER_GET_IFACE (folder)->list_children (folder, &tmp_children, error); g_assert (result || tmp_children == NULL); if (children) *children = tmp_children; else gtk_file_paths_free (tmp_children); return result; } GtkFileInfo * gtk_file_folder_get_info (GtkFileFolder *folder, const GtkFilePath *path, GError **error) { g_return_val_if_fail (GTK_IS_FILE_FOLDER (folder), NULL); g_return_val_if_fail (path != NULL, NULL); g_return_val_if_fail (error == NULL || *error == NULL, NULL); return GTK_FILE_FOLDER_GET_IFACE (folder)->get_info (folder, path, error); } GSList * gtk_file_paths_sort (GSList *paths) { return g_slist_sort (paths, (GCompareFunc)strcmp); } /** * gtk_file_paths_copy: * @paths: A #GSList of #GtkFilePath structures. * * Copies a list of #GtkFilePath structures. * * Return value: A copy of @paths. Since the contents of the list are copied as * well, you should use gtk_file_paths_free() to free the result. **/ GSList * gtk_file_paths_copy (GSList *paths) { GSList *head, *tail, *l; head = tail = NULL; for (l = paths; l; l = l->next) { GtkFilePath *path; GSList *node; path = l->data; node = g_slist_alloc (); if (tail) tail->next = node; else head = node; node->data = gtk_file_path_copy (path); tail = node; } return head; } void gtk_file_paths_free (GSList *paths) { GSList *tmp_list; for (tmp_list = paths; tmp_list; tmp_list = tmp_list->next) gtk_file_path_free (tmp_list->data); g_slist_free (paths); } /***************************************** * GtkFileSystem modules * *****************************************/ typedef struct _GtkFileSystemModule GtkFileSystemModule; typedef struct _GtkFileSystemModuleClass GtkFileSystemModuleClass; struct _GtkFileSystemModule { GTypeModule parent_instance; GModule *library; void (*init) (GTypeModule *module); void (*exit) (void); GtkFileSystem * (*create) (void); gchar *path; }; struct _GtkFileSystemModuleClass { GTypeModuleClass parent_class; }; G_DEFINE_TYPE (GtkFileSystemModule, gtk_file_system_module, G_TYPE_TYPE_MODULE); #define GTK_TYPE_FILE_SYSTEM_MODULE (gtk_file_system_module_get_type ()) #define GTK_FILE_SYSTEM_MODULE(module) (G_TYPE_CHECK_INSTANCE_CAST ((module), GTK_TYPE_FILE_SYSTEM_MODULE, GtkFileSystemModule)) static GSList *loaded_file_systems; static gboolean gtk_file_system_module_load (GTypeModule *module) { GtkFileSystemModule *fs_module = GTK_FILE_SYSTEM_MODULE (module); fs_module->library = g_module_open (fs_module->path, 0); if (!fs_module->library) { g_warning (g_module_error()); return FALSE; } /* extract symbols from the lib */ if (!g_module_symbol (fs_module->library, "fs_module_init", (gpointer *)&fs_module->init) || !g_module_symbol (fs_module->library, "fs_module_exit", (gpointer *)&fs_module->exit) || !g_module_symbol (fs_module->library, "fs_module_create", (gpointer *)&fs_module->create)) { g_warning (g_module_error()); g_module_close (fs_module->library); return FALSE; } /* call the filesystems's init function to let it */ /* setup anything it needs to set up. */ fs_module->init (module); return TRUE; } static void gtk_file_system_module_unload (GTypeModule *module) { GtkFileSystemModule *fs_module = GTK_FILE_SYSTEM_MODULE (module); fs_module->exit(); g_module_close (fs_module->library); fs_module->library = NULL; fs_module->init = NULL; fs_module->exit = NULL; fs_module->create = NULL; } /* This only will ever be called if an error occurs during * initialization */ static void gtk_file_system_module_finalize (GObject *object) { GtkFileSystemModule *module = GTK_FILE_SYSTEM_MODULE (object); g_free (module->path); G_OBJECT_CLASS (gtk_file_system_module_parent_class)->finalize (object); } static void gtk_file_system_module_class_init (GtkFileSystemModuleClass *class) { GTypeModuleClass *module_class = G_TYPE_MODULE_CLASS (class); GObjectClass *gobject_class = G_OBJECT_CLASS (class); module_class->load = gtk_file_system_module_load; module_class->unload = gtk_file_system_module_unload; gobject_class->finalize = gtk_file_system_module_finalize; } static void gtk_file_system_module_init (GtkFileSystemModule *fs_module) { } static GtkFileSystem * _gtk_file_system_module_create (GtkFileSystemModule *fs_module) { GtkFileSystem *fs; if (g_type_module_use (G_TYPE_MODULE (fs_module))) { fs = fs_module->create (); g_type_module_unuse (G_TYPE_MODULE (fs_module)); return fs; } return NULL; } GtkFileSystem * _gtk_file_system_create (const char *file_system_name) { GSList *l; char *module_path; GtkFileSystemModule *fs_module; GtkFileSystem *fs; for (l = loaded_file_systems; l != NULL; l = l->next) { fs_module = l->data; if (strcmp (G_TYPE_MODULE (fs_module)->name, file_system_name) == 0) return _gtk_file_system_module_create (fs_module); } fs = NULL; if (g_module_supported ()) { module_path = _gtk_find_module (file_system_name, "filesystems"); if (module_path) { fs_module = g_object_new (GTK_TYPE_FILE_SYSTEM_MODULE, NULL); g_type_module_set_name (G_TYPE_MODULE (fs_module), file_system_name); fs_module->path = g_strdup (module_path); loaded_file_systems = g_slist_prepend (loaded_file_systems, fs_module); fs = _gtk_file_system_module_create (fs_module); } g_free (module_path); } return fs; }