gio/ docs/reference/gio Merged gio-standalone into glib.

2007-11-26  Alexander Larsson  <alexl@redhat.com>

        * Makefile.am:
        * configure.in:
        * gio-2.0-uninstalled.pc.in:
        * gio-2.0.pc.in: 
        * gio-unix-2.0-uninstalled.pc.in:
        * gio-unix-2.0.pc.in:
	* gio/
	* docs/reference/gio
	Merged gio-standalone into glib.
	
        * glib/glibintl.h:
        * glib/gutils.c:
	Export glib_gettext so that gio can use it
	Add P_ (using same domain for now)
	Add I_ as g_intern_static_string


svn path=/trunk/; revision=5941

1 files changed, 258 insertions, 0 deletions

diff --git a/gio/gvfs.c b/gio/gvfs.c
new file mode 100644
index 000000000..4dc1f256b
--- /dev/null
+++ b/gio/gvfs.c
@@ -0,0 +1,258 @@
+/* GIO - GLib Input, Output and Streaming Library
+ * 
+ * Copyright (C) 2006-2007 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.
+ *
+ * Author: Alexander Larsson <alexl@redhat.com>
+ */
+
+#include <config.h>
+#include <string.h>
+#include "gvfs.h"
+#include "glocalvfs.h"
+#include "giomodule.h"
+#include "glibintl.h"
+
+G_DEFINE_TYPE (GVfs, g_vfs, G_TYPE_OBJECT);
+
+static void
+g_vfs_class_init (GVfsClass *klass)
+{
+}
+
+static void
+g_vfs_init (GVfs *vfs)
+{
+}
+
+/**
+ * g_vfs_is_active:
+ * @vfs: an  #GVfs.
+ * 
+ * Returns TRUE if construction of the @vfs was successful and its now active.
+ **/
+gboolean
+g_vfs_is_active (GVfs *vfs)
+{
+  GVfsClass *class;
+
+  g_return_val_if_fail (G_IS_VFS (vfs), FALSE);
+
+  class = G_VFS_GET_CLASS (vfs);
+
+  return (* class->is_active) (vfs);
+}
+
+
+/**
+ * g_vfs_get_file_for_path:
+ * @vfs: an input #GVfs.
+ * @path: a string containing a VFS path.
+ * 
+ * Returns a #GFile for the given @path.
+ * 
+ **/
+GFile *
+g_vfs_get_file_for_path (GVfs *vfs,
+			 const char *path)
+{
+  GVfsClass *class;
+  
+  g_return_val_if_fail (G_IS_VFS (vfs), NULL);
+  g_return_val_if_fail (path != NULL, NULL);
+
+  class = G_VFS_GET_CLASS (vfs);
+
+  return (* class->get_file_for_path) (vfs, path);
+}
+
+/**
+ * g_vfs_get_file_for_uri:
+ * @vfs: an input #GVfs.
+ * @uri: an input string containing a URI path.
+ *
+ * This operation never fails, but the returned object
+ * might not support any I/O operation if the uri
+ * is malformed or if the uri type is not supported.
+ * 
+ * Returns a #GFile for the given @uri. 
+ * 
+ **/
+GFile *
+g_vfs_get_file_for_uri (GVfs *vfs,
+			const char *uri)
+{
+  GVfsClass *class;
+  
+  g_return_val_if_fail (G_IS_VFS (vfs), NULL);
+  g_return_val_if_fail (uri != NULL, NULL);
+
+  class = G_VFS_GET_CLASS (vfs);
+
+  return (* class->get_file_for_uri) (vfs, uri);
+}
+
+/**
+ * g_vfs_get_supported_uri_schemes:
+ * @vfs: an input #GVfs.
+ * 
+ * Returns: 
+ * 
+ **/
+const gchar * const *
+g_vfs_get_supported_uri_schemes (GVfs *vfs)
+{
+  GVfsClass *class;
+  
+  g_return_val_if_fail (G_IS_VFS (vfs), NULL);
+
+  class = G_VFS_GET_CLASS (vfs);
+
+  return (* class->get_supported_uri_schemes) (vfs);
+}
+
+/**
+ * g_vfs_parse_name:
+ * @vfs: an input #GVfs.
+ * @parse_name: a string to be parsed by the VFS module.
+ * 
+ * This operation never fails, but the returned object might 
+ * not support any I/O operations if the @parse_name cannot 
+ * be parsed by the #GVfs module.
+ * 
+ * Returns a #GFile for the given @parse_name.
+ * 
+ **/
+GFile *
+g_vfs_parse_name (GVfs *vfs,
+		  const char *parse_name)
+{
+  GVfsClass *class;
+  
+  g_return_val_if_fail (G_IS_VFS (vfs), NULL);
+  g_return_val_if_fail (parse_name != NULL, NULL);
+
+  class = G_VFS_GET_CLASS (vfs);
+
+  return (* class->parse_name) (vfs, parse_name);
+}
+
+/* Note: This compares in reverse order.
+   Higher prio -> sort first
+ */
+static gint
+compare_vfs_type (gconstpointer  a,
+		  gconstpointer  b,
+		  gpointer       user_data)
+{
+  GVfsClass *class_a, *class_b;
+  gint res;
+  const char *use_this_vfs;
+  
+  class_a = g_type_class_ref (*(GType *)a);
+  class_b = g_type_class_ref (*(GType *)b);
+  use_this_vfs = user_data;
+
+  if (class_a == class_b)
+    res = 0;
+  else if (use_this_vfs != NULL &&
+	   strcmp (class_a->name, use_this_vfs) == 0)
+    res = -1;
+  else if (use_this_vfs != NULL &&
+	   strcmp (class_b->name, use_this_vfs) == 0)
+    res = 1;
+  else 
+    res = class_b->priority - class_a->priority;
+  
+  g_type_class_unref (class_a);
+  g_type_class_unref (class_b);
+  
+  return res;
+}
+
+
+static gpointer
+get_default_vfs (gpointer arg)
+{
+  volatile GType local_type;
+  GType *vfs_impls;
+  int i;
+  guint n_vfs_impls;
+  const char *use_this;
+  GVfs *vfs;
+  GType (*casted_get_type)(void);
+
+  use_this = g_getenv ("GIO_USE_VFS");
+  
+  /* Ensure GLocalVfs type is available
+     the cast is required to avoid any G_GNUC_CONST optimizations */
+  casted_get_type = g_local_vfs_get_type;
+  local_type = casted_get_type ();
+  
+  /* Ensure vfs in modules loaded */
+  g_io_modules_ensure_loaded (GIO_MODULE_DIR);
+
+  vfs_impls = g_type_children (G_TYPE_VFS, &n_vfs_impls);
+
+  g_qsort_with_data (vfs_impls, n_vfs_impls, sizeof (GType),
+		     compare_vfs_type, (gpointer)use_this);
+  
+  for (i = 0; i < n_vfs_impls; i++)
+    {
+      vfs = g_object_new (vfs_impls[i], NULL);
+
+      if (g_vfs_is_active (vfs))
+	break;
+
+      g_object_unref (vfs);
+      vfs = NULL;
+    }
+  
+  g_free (vfs_impls);
+
+  return vfs;
+}
+
+/**
+ * g_vfs_get_default:
+ * 
+ * Returns the default #GVfs for the system.
+ **/
+GVfs *
+g_vfs_get_default (void)
+{
+  static GOnce once_init = G_ONCE_INIT;
+  
+  return g_once (&once_init, get_default_vfs, NULL);
+}
+
+/**
+ * g_vfs_get_local:
+ * 
+ * Returns the local #GVfs for the system.
+ **/
+GVfs *
+g_vfs_get_local (void)
+{
+  static gsize vfs = 0;
+
+  if (g_once_init_enter (&vfs))
+    g_once_init_leave (&vfs, (gsize)g_local_vfs_new ());
+
+  return G_VFS (vfs);
+}
+