Add (de)marshalling functions for GFileInfos.

2009-02-27  Alexander Larsson  <alexl@redhat.com>

        * common/Makefile.am:
        * common/gvfsfileinfo.[ch]:
	Add (de)marshalling functions for GFileInfos.

        * common/gvfsdaemonprotocol.h:
	Add protocol extensions for query info over streams

        * client/gdaemonfileinputstream.c:
	Support sync query_info.

        * daemon/Makefile.am:
        * daemon/gvfsjobqueryinforead.[ch]:
        * daemon/gvfsbackend.h:
	Added query info job and backend call for input streams

        * daemon/gvfsbackendtest.c:
	Implement query_info_on_read

        * daemon/gvfschannel.[ch]:
        Add g_vfs_channel_send_info

        * daemon/gvfsreadchannel.c:
        (read_channel_handle_request):
	Handle query info

        * test/Makefile.am:
        * test/test-query-info-stream.c:
	Add test for stream query info.


svn path=/trunk/; revision=2257

1 files changed, 144 insertions, 0 deletions

diff --git a/daemon/gvfsjobqueryinforead.c b/daemon/gvfsjobqueryinforead.c
new file mode 100644
index 00000000..7d8453a9
--- /dev/null
+++ b/daemon/gvfsjobqueryinforead.c
@@ -0,0 +1,144 @@
+/* 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 <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include "gvfsreadchannel.h"
+#include "gvfsjobqueryinforead.h"
+#include "gvfsdaemonutils.h"
+
+G_DEFINE_TYPE (GVfsJobQueryInfoRead, g_vfs_job_query_info_read, G_VFS_TYPE_JOB)
+
+static void     run        (GVfsJob *job);
+static gboolean try        (GVfsJob *job);
+static void     send_reply (GVfsJob *job);
+
+static void
+g_vfs_job_query_info_read_finalize (GObject *object)
+{
+  GVfsJobQueryInfoRead *job;
+
+  job = G_VFS_JOB_QUERY_INFO_READ (object);
+  g_object_unref (job->channel);
+  g_object_unref (job->file_info);
+  g_free (job->attributes);
+  g_file_attribute_matcher_unref (job->attribute_matcher);
+
+  if (G_OBJECT_CLASS (g_vfs_job_query_info_read_parent_class)->finalize)
+    (*G_OBJECT_CLASS (g_vfs_job_query_info_read_parent_class)->finalize) (object);
+}
+
+static void
+g_vfs_job_query_info_read_class_init (GVfsJobQueryInfoReadClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GVfsJobClass *job_class = G_VFS_JOB_CLASS (klass);
+  
+  gobject_class->finalize = g_vfs_job_query_info_read_finalize;
+
+  job_class->run = run;
+  job_class->try = try;
+  job_class->send_reply = send_reply;
+}
+
+static void
+g_vfs_job_query_info_read_init (GVfsJobQueryInfoRead *job)
+{
+}
+
+GVfsJob *
+g_vfs_job_query_info_read_new (GVfsReadChannel *channel,
+			       GVfsBackendHandle handle,
+			       const char *attrs,
+			       GVfsBackend *backend)
+{
+  GVfsJobQueryInfoRead *job;
+  
+  job = g_object_new (G_VFS_TYPE_JOB_QUERY_INFO_READ,
+		      NULL);
+
+  job->backend = backend;
+  job->channel = g_object_ref (channel);
+  job->handle = handle;
+  job->attributes = g_strdup (attrs);
+  job->attribute_matcher = g_file_attribute_matcher_new (attrs);
+
+  job->file_info = g_file_info_new ();
+  g_file_info_set_attribute_mask (job->file_info, job->attribute_matcher);
+  
+  return G_VFS_JOB (job);
+}
+
+/* Might be called on an i/o thread */
+static void
+send_reply (GVfsJob *job)
+{
+  GVfsJobQueryInfoRead *op_job = G_VFS_JOB_QUERY_INFO_READ (job);
+  
+  if (job->failed)
+    g_vfs_channel_send_error (G_VFS_CHANNEL (op_job->channel), job->error);
+  else
+    g_vfs_channel_send_info (G_VFS_CHANNEL (op_job->channel), op_job->file_info);
+}
+
+static void
+run (GVfsJob *job)
+{
+  GVfsJobQueryInfoRead *op_job = G_VFS_JOB_QUERY_INFO_READ (job);
+  GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend);
+
+  if (class->query_info_on_read == NULL)
+    {
+      g_vfs_job_failed (job, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
+			_("Operation not supported by backend"));
+      return;
+    }
+      
+  class->query_info_on_read (op_job->backend,
+			     op_job,
+			     op_job->handle,
+			     op_job->file_info,
+			     op_job->attribute_matcher);
+}
+
+static gboolean
+try (GVfsJob *job)
+{
+  GVfsJobQueryInfoRead *op_job = G_VFS_JOB_QUERY_INFO_READ (job);
+  GVfsBackendClass *class = G_VFS_BACKEND_GET_CLASS (op_job->backend);
+
+  if (class->try_query_info_on_read == NULL)
+    return FALSE;
+  
+  return class->try_query_info_on_read (op_job->backend,
+					op_job,
+					op_job->handle,
+					op_job->file_info,
+					op_job->attribute_matcher);
+}