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/*
* Copyright (C) 2014, Softathome <contact@softathome.com>
*
* 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 2.1 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Martyn Russell <martyn@lanedo.com>
*/
#include "config.h"
#include "tracker-file-data-provider.h"
static void tracker_file_data_provider_file_iface_init (TrackerDataProviderIface *iface);
struct _TrackerFileDataProvider {
GObject parent_instance;
};
/**
* SECTION:tracker-file-data-provider
* @short_description: File based data provider for file:// descendant URIs
* @include: libtracker-miner/miner.h
*
* #TrackerFileDataProvider is a local file implementation of the
* #TrackerDataProvider interface, charged with handling all file:// type URIs.
*
* Underneath it all, this implementation makes use of GIO-based
* #GFileEnumerator<!-- -->s.
*
* Since: 1.2
**/
G_DEFINE_TYPE_WITH_CODE (TrackerFileDataProvider, tracker_file_data_provider, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (TRACKER_TYPE_DATA_PROVIDER,
tracker_file_data_provider_file_iface_init))
static void
tracker_file_data_provider_finalize (GObject *object)
{
G_OBJECT_CLASS (tracker_file_data_provider_parent_class)->finalize (object);
}
static void
tracker_file_data_provider_class_init (TrackerFileDataProviderClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = tracker_file_data_provider_finalize;
}
static void
tracker_file_data_provider_init (TrackerFileDataProvider *fe)
{
}
static GFileEnumerator *
file_data_provider_begin (TrackerDataProvider *data_provider,
GFile *url,
const gchar *attributes,
TrackerDirectoryFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileQueryInfoFlags file_flags;
GFileEnumerator *fe;
GError *local_error = NULL;
if (g_cancellable_set_error_if_cancelled (cancellable, error)) {
return NULL;
}
/* We ignore the TRACKER_DIRECTORY_FLAG_NO_STAT here, it makes
* no sense to be at this point with that flag. So we warn
* about it...
*/
if ((flags & TRACKER_DIRECTORY_FLAG_NO_STAT) != 0) {
g_warning ("Did not expect to have TRACKER_DIRECTORY_FLAG_NO_STAT "
"flag in %s(), continuing anyway...",
__FUNCTION__);
}
file_flags = G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS;
fe = g_file_enumerate_children (url,
attributes,
file_flags,
cancellable,
&local_error);
if (local_error) {
gchar *uri;
uri = g_file_get_uri (url);
g_warning ("Could not open directory '%s': %s",
uri, local_error->message);
g_propagate_error (error, local_error);
g_free (uri);
return NULL;
}
return fe;
}
static void
enumerate_children_cb (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
GFile *url = G_FILE (source_object);
GFileEnumerator *enumerator = NULL;
GTask *task = G_TASK (user_data);
GError *error = NULL;
enumerator = g_file_enumerate_children_finish (url, res, &error);
if (error) {
if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
gchar *uri;
uri = g_file_get_uri (url);
g_warning ("Could not open directory '%s': %s",
uri, error->message);
g_free (uri);
}
g_task_return_error (task, error);
} else {
g_task_return_pointer (task, enumerator, (GDestroyNotify) g_object_unref);
}
g_object_unref (task);
}
static void
file_data_provider_begin_async (TrackerDataProvider *data_provider,
GFile *url,
const gchar *attributes,
TrackerDirectoryFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileQueryInfoFlags file_flags;
GTask *task;
task = g_task_new (data_provider, cancellable, callback, user_data);
/* We ignore the TRACKER_DIRECTORY_FLAG_NO_STAT here, it makes
* no sense to be at this point with that flag. So we warn
* about it...
*/
if ((flags & TRACKER_DIRECTORY_FLAG_NO_STAT) != 0) {
g_warning ("Did not expect to have TRACKER_DIRECTORY_FLAG_NO_STAT "
"flag in %s(), continuing anyway...",
__FUNCTION__);
}
file_flags = G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS;
g_file_enumerate_children_async (url,
attributes,
file_flags,
io_priority,
cancellable,
enumerate_children_cb,
g_object_ref (task));
g_object_unref (task);
}
static GFileEnumerator *
file_data_provider_begin_finish (TrackerDataProvider *data_provider,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (result, data_provider), NULL);
return g_task_propagate_pointer (G_TASK (result), error);
}
static void
tracker_file_data_provider_file_iface_init (TrackerDataProviderIface *iface)
{
iface->begin = file_data_provider_begin;
iface->begin_async = file_data_provider_begin_async;
iface->begin_finish = file_data_provider_begin_finish;
}
/**
* tracker_file_data_provider_new:
*
* Creates a new TrackerDataProvider which can be used to create new
* #TrackerMinerFS classes. See #TrackerMinerFS for an example of how
* to use your #TrackerDataProvider.
*
* Returns: (transfer full): a #TrackerDataProvider which must be
* unreferenced with g_object_unref().
*
* Since: 1.2
**/
TrackerDataProvider *
tracker_file_data_provider_new (void)
{
TrackerFileDataProvider *tfdp;
tfdp = g_object_new (TRACKER_TYPE_FILE_DATA_PROVIDER, NULL);
return TRACKER_DATA_PROVIDER (tfdp);
}
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