1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 * Author: Alexander Larsson <alexl@redhat.com>
24 #include "glib-private.h"
25 #include "glocalvfs.h"
26 #include "gresourcefile.h"
27 #include "giomodule-priv.h"
33 * @short_description: Virtual File System
36 * Entry point for using GIO functionality.
40 G_DEFINE_TYPE (GVfs, g_vfs, G_TYPE_OBJECT);
43 g_vfs_class_init (GVfsClass *klass)
48 g_vfs_init (GVfs *vfs)
56 * Checks if the VFS is active.
58 * Returns: %TRUE if construction of the @vfs was successful
59 * and it is now active.
62 g_vfs_is_active (GVfs *vfs)
66 g_return_val_if_fail (G_IS_VFS (vfs), FALSE);
68 class = G_VFS_GET_CLASS (vfs);
70 return (* class->is_active) (vfs);
75 * g_vfs_get_file_for_path:
77 * @path: a string containing a VFS path.
79 * Gets a #GFile for @path.
81 * Returns: (transfer full): a #GFile.
82 * Free the returned object with g_object_unref().
85 g_vfs_get_file_for_path (GVfs *vfs,
90 g_return_val_if_fail (G_IS_VFS (vfs), NULL);
91 g_return_val_if_fail (path != NULL, NULL);
93 class = G_VFS_GET_CLASS (vfs);
95 return (* class->get_file_for_path) (vfs, path);
99 * g_vfs_get_file_for_uri:
101 * @uri: a string containing a URI
103 * Gets a #GFile for @uri.
105 * This operation never fails, but the returned object
106 * might not support any I/O operation if the URI
107 * is malformed or if the URI scheme is not supported.
109 * Returns: (transfer full): a #GFile.
110 * Free the returned object with g_object_unref().
113 g_vfs_get_file_for_uri (GVfs *vfs,
118 g_return_val_if_fail (G_IS_VFS (vfs), NULL);
119 g_return_val_if_fail (uri != NULL, NULL);
121 class = G_VFS_GET_CLASS (vfs);
123 /* This is an unfortunate placement, but we really
124 * need to check this before chaining to the vfs,
125 * because we want to support resource uris for
126 * all vfs:es, even those that predate resources.
128 if (g_str_has_prefix (uri, "resource:"))
129 return _g_resource_file_new (uri);
131 return (* class->get_file_for_uri) (vfs, uri);
135 * g_vfs_get_supported_uri_schemes:
138 * Gets a list of URI schemes supported by @vfs.
140 * Returns: (transfer none): a %NULL-terminated array of strings.
141 * The returned array belongs to GIO and must
142 * not be freed or modified.
144 const gchar * const *
145 g_vfs_get_supported_uri_schemes (GVfs *vfs)
149 g_return_val_if_fail (G_IS_VFS (vfs), NULL);
151 class = G_VFS_GET_CLASS (vfs);
153 return (* class->get_supported_uri_schemes) (vfs);
159 * @parse_name: a string to be parsed by the VFS module.
161 * This operation never fails, but the returned object might
162 * not support any I/O operations if the @parse_name cannot
163 * be parsed by the #GVfs module.
165 * Returns: (transfer full): a #GFile for the given @parse_name.
166 * Free the returned object with g_object_unref().
169 g_vfs_parse_name (GVfs *vfs,
170 const char *parse_name)
174 g_return_val_if_fail (G_IS_VFS (vfs), NULL);
175 g_return_val_if_fail (parse_name != NULL, NULL);
177 class = G_VFS_GET_CLASS (vfs);
179 if (g_str_has_prefix (parse_name, "resource:"))
180 return _g_resource_file_new (parse_name);
182 return (* class->parse_name) (vfs, parse_name);
188 * Gets the default #GVfs for the system.
190 * Returns: (transfer none): a #GVfs.
193 g_vfs_get_default (void)
195 if (GLIB_PRIVATE_CALL (g_check_setuid) ())
196 return g_vfs_get_local ();
197 return _g_io_module_get_default (G_VFS_EXTENSION_POINT_NAME,
199 (GIOModuleVerifyFunc)g_vfs_is_active);
205 * Gets the local #GVfs for the system.
207 * Returns: (transfer none): a #GVfs.
210 g_vfs_get_local (void)
212 static gsize vfs = 0;
214 if (g_once_init_enter (&vfs))
215 g_once_init_leave (&vfs, (gsize)_g_local_vfs_new ());