[tracker] TrackerWritebackFile: Added base implementation for local files.

[Philip Van Hoof <pvanhoof src gnome org>]

commit af0265e841f45423ac3875300de5a7c870f9d703
Author: Carlos Garnacho <carlos lanedo com>
Date:   Tue Nov 17 15:55:36 2009 +0100

    TrackerWritebackFile: Added base implementation for local files.
    
    This object implements file locking for local files, and provides an
    specialized vmethod as well.

 src/libtracker-common/tracker-file-utils.c     |    4 +-
 src/tracker-writeback/Makefile.am              |    2 +
 src/tracker-writeback/tracker-writeback-file.c |   74 ++++++++++++++++++++++++
 src/tracker-writeback/tracker-writeback-file.h |   56 ++++++++++++++++++
 src/tracker-writeback/tracker-writeback.h      |    3 +-
 5 files changed, 135 insertions(+), 4 deletions(-)
---
diff --git a/src/libtracker-common/tracker-file-utils.c b/src/libtracker-common/tracker-file-utils.c
index c61c941..5c5a36d 100644
--- a/src/libtracker-common/tracker-file-utils.c
+++ b/src/libtracker-common/tracker-file-utils.c
@@ -699,7 +699,7 @@ flock_file (GFile *file,
 
 	g_return_val_if_fail (G_IS_FILE (file), -1);
 
-	if (g_file_is_native (file)) {
+	if (!g_file_is_native (file)) {
 		return -1;
 	}
 
@@ -777,7 +777,7 @@ tracker_file_is_locked (GFile *file)
 
 	g_return_val_if_fail (G_IS_FILE (file), FALSE);
 
-	if (g_file_is_native (file)) {
+	if (!g_file_is_native (file)) {
 		return FALSE;
 	}
 
diff --git a/src/tracker-writeback/Makefile.am b/src/tracker-writeback/Makefile.am
index 3c20f99..bc47048 100644
--- a/src/tracker-writeback/Makefile.am
+++ b/src/tracker-writeback/Makefile.am
@@ -37,6 +37,8 @@ tracker_writeback_SOURCES = 						\
 	$(dbus_sources)							\
 	tracker-writeback-dispatcher.c					\
 	tracker-writeback-dispatcher.h					\
+	tracker-writeback-file.c					\
+	tracker-writeback-file.h					\
 	tracker-writeback-module.c					\
 	tracker-writeback-module.h					\
 	tracker-writeback.c						\
diff --git a/src/tracker-writeback/tracker-writeback-file.c b/src/tracker-writeback/tracker-writeback-file.c
new file mode 100644
index 0000000..6233a76
--- /dev/null
+++ b/src/tracker-writeback/tracker-writeback-file.c
@@ -0,0 +1,74 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2008, Nokia
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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.
+ */
+
+#include <libtracker-common/tracker-file-utils.h>
+#include "tracker-writeback-file.h"
+
+static gboolean tracker_writeback_file_update_metadata (TrackerWriteback *writeback,
+                                                        GPtrArray        *values);
+
+G_DEFINE_ABSTRACT_TYPE (TrackerWritebackFile, tracker_writeback_file, TRACKER_TYPE_WRITEBACK)
+
+static void
+tracker_writeback_file_class_init (TrackerWritebackFileClass *klass)
+{
+        TrackerWritebackClass *writeback_class = TRACKER_WRITEBACK_CLASS (klass);
+
+        writeback_class->update_metadata = tracker_writeback_file_update_metadata;
+}
+
+static void
+tracker_writeback_file_init (TrackerWritebackFile *writeback_file)
+{
+
+}
+
+static gboolean
+tracker_writeback_file_update_metadata (TrackerWriteback *writeback,
+                                        GPtrArray        *values)
+{
+        TrackerWritebackFileClass *writeback_file_class;
+        gboolean retval;
+        GFile *file;
+        GStrv row;
+
+        writeback_file_class = TRACKER_WRITEBACK_FILE_GET_CLASS (writeback);
+
+        if (!writeback_file_class->update_file_metadata) {
+                g_critical ("%s doesn't implement update_file_metadata()",
+                            G_OBJECT_TYPE_NAME (writeback));
+                return FALSE;
+        }
+
+        /* Get the file from the first row */
+        row = g_ptr_array_index (values, 0);
+        file = g_file_new_for_uri (row[0]);
+
+        tracker_file_lock (file);
+
+        retval = (writeback_file_class->update_file_metadata) (TRACKER_WRITEBACK_FILE (writeback),
+                                                               file, values);
+
+        tracker_file_unlock (file);
+
+        g_object_unref (file);
+
+        return retval;
+}
diff --git a/src/tracker-writeback/tracker-writeback-file.h b/src/tracker-writeback/tracker-writeback-file.h
new file mode 100644
index 0000000..3e7f539
--- /dev/null
+++ b/src/tracker-writeback/tracker-writeback-file.h
@@ -0,0 +1,56 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2008, Nokia
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU 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.
+ */
+
+#include <gio/gio.h>
+#include "tracker-writeback.h"
+
+#ifndef __TRACKER_WRITEBACK_FILE_H__
+#define __TRACKER_WRITEBACK_FILE_H__
+
+G_BEGIN_DECLS
+
+#define TRACKER_TYPE_WRITEBACK_FILE         (tracker_writeback_file_get_type())
+#define TRACKER_WRITEBACK_FILE(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), TRACKER_TYPE_WRITEBACK_FILE, TrackerWritebackFile))
+#define TRACKER_WRITEBACK_FILE_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST ((c), TRACKER_TYPE_WRITEBACK_FILE, TrackerWritebackFileClass))
+#define TRACKER_IS_WRITEBACK_FILE(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), TRACKER_TYPE_WRITEBACK_FILE))
+#define TRACKER_IS_WRITEBACK_FILE_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE ((c),  TRACKER_TYPE_WRITEBACK_FILE))
+#define TRACKER_WRITEBACK_FILE_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), TRACKER_TYPE_WRITEBACK_FILE, TrackerWritebackFileClass))
+
+typedef struct TrackerWritebackFile TrackerWritebackFile;
+typedef struct TrackerWritebackFileClass TrackerWritebackFileClass;
+
+struct TrackerWritebackFile {
+        TrackerWriteback parent_instance;
+};
+
+struct TrackerWritebackFileClass {
+        TrackerWritebackClass parent_class;
+
+        gboolean (* update_file_metadata) (TrackerWritebackFile *writeback_file,
+                                           GFile                *file,
+                                           GPtrArray            *values);
+};
+
+GType tracker_writeback_file_get_type (void) G_GNUC_CONST;
+
+
+G_END_DECLS
+
+#endif /* __TRACKER_WRITEBACK_FILE_H__ */
diff --git a/src/tracker-writeback/tracker-writeback.h b/src/tracker-writeback/tracker-writeback.h
index e971b39..74bb6b6 100644
--- a/src/tracker-writeback/tracker-writeback.h
+++ b/src/tracker-writeback/tracker-writeback.h
@@ -19,7 +19,6 @@
  */
 
 #include <glib-object.h>
-#include <gio/gio.h>
 
 #ifndef __TRACKER_WRITEBACK_H__
 #define __TRACKER_WRITEBACK_H__
@@ -27,7 +26,7 @@
 G_BEGIN_DECLS
 
 #define TRACKER_TYPE_WRITEBACK         (tracker_writeback_get_type())
-#define TRACKER_WRITEBACK(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), TRACKER_TYPE_WRITEBAK, TrackerWriteback))
+#define TRACKER_WRITEBACK(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), TRACKER_TYPE_WRITEBACK, TrackerWriteback))
 #define TRACKER_WRITEBACK_CLASS(c)     (G_TYPE_CHECK_CLASS_CAST ((c), TRACKER_TYPE_WRITEBACK, TrackerWritebackClass))
 #define TRACKER_IS_WRITEBACK(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), TRACKER_TYPE_WRITEBACK))
 #define TRACKER_IS_WRITEBACK_CLASS(c)  (G_TYPE_CHECK_CLASS_TYPE ((c),  TRACKER_TYPE_WRITEBACK))