gtk2/gtk/gtkfilesystem.c
Jonathan Blandford 4b041f8241 Display the root a bit more cleanly.
Mon Feb 23 15:23:23 2004  Jonathan Blandford  <jrb@gnome.org>

        * gtk/gtkpathbar.c (gtk_path_bar_set_path): Display the root a bit
        more cleanly.

        * gtk/gtkpathbar.h (struct _GtkPathBarClass): fix the signal.
2004-02-23 20:24:01 +00:00

1058 lines
28 KiB
C

/* 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 <gmodule.h>
#include "gtkfilesystem.h"
#include "gtkicontheme.h"
#include "gtkmain.h"
#include <string.h>
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 file.
*
* Return value: TRUE if the operation was successful; note that in this case @parent
* can be returned as %NULL if the base @path has no parent folder (i.e. if it is
* already a file system root). If the operation fails, this function returns FALSE
* 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)
{
GtkFilePath *tmp_parent = NULL;
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 (error == NULL || *error == NULL, FALSE);
result = GTK_FILE_SYSTEM_GET_IFACE (file_system)->get_parent (file_system, path, &tmp_parent, error);
g_assert (result || tmp_parent == NULL);
if (parent)
*parent = tmp_parent;
else
gtk_file_path_free (tmp_parent);
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_add_bookmark:
* @file_system: a #GtkFileSystem
* @bookmark: path of the bookmark to add
* @error: location to store error, or %NULL
*
* Adds a bookmark folder to the user's bookmarks list. If the operation succeeds,
* the "bookmarks_changed" signal will be emitted.
*
* Return value: TRUE if the operation succeeds, FALSE otherwise. In the latter case,
* the @error value will be set.
**/
gboolean
gtk_file_system_add_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)->add_bookmark (file_system, path, error);
}
/**
* gtk_file_system_remove_bookmark:
* @file_system: a #GtkFileSystem
* @bookmark: 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.
*
* 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;
}