/*
- * Copyright (C) 2005 Mr Jamie McCracken
+ * Copyright (C) 2009-2011 Nokia <ivan.frade@nokia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* 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,
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
- * Author: Jamie McCracken <jamiemcc@gnome.org>
+ * Authors: Jürg Billeter <juerg.billeter@codethink.co.uk>
+ * Martyn Russell <martyn@lanedo.com>
*
* Based on nautilus-search-engine-tracker.c
*/
-#include <config.h>
-#include <gmodule.h>
-#include "gtksearchenginetracker.h"
-#if 0
-#include <tracker.h>
-#endif
+#include "config.h"
-/* we dlopen() libtracker at runtime */
+#include <string.h>
-typedef struct _TrackerClient TrackerClient;
+#include <gio/gio.h>
+#include <gmodule.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
-typedef void (*TrackerArrayReply) (char **result, GError *error, gpointer user_data);
+#include "gtksearchenginetracker.h"
-static TrackerClient * (*tracker_connect) (gboolean enable_warnings) = NULL;
-static void (*tracker_disconnect) (TrackerClient *client) = NULL;
-static void (*tracker_cancel_last_call) (TrackerClient *client) = NULL;
+#define DBUS_SERVICE_RESOURCES "org.freedesktop.Tracker1"
+#define DBUS_PATH_RESOURCES "/org/freedesktop/Tracker1/Resources"
+#define DBUS_INTERFACE_RESOURCES "org.freedesktop.Tracker1.Resources"
-static void (*tracker_search_metadata_by_text_async) (TrackerClient *client,
- const char *query,
- TrackerArrayReply callback,
- gpointer user_data) = NULL;
-static void (*tracker_search_metadata_by_text_and_location_async) (TrackerClient *client,
- const char *query,
- const char *location,
- TrackerArrayReply callback,
- gpointer user_data) = NULL;
+#define DBUS_SERVICE_STATUS "org.freedesktop.Tracker1"
+#define DBUS_PATH_STATUS "/org/freedesktop/Tracker1/Status"
+#define DBUS_INTERFACE_STATUS "org.freedesktop.Tracker1.Status"
-static struct TrackerDlMapping
-{
- const char *fn_name;
- gpointer *fn_ptr_ref;
-} tracker_dl_mapping[] =
-{
-#define MAP(a) { #a, (gpointer *)&a }
- MAP (tracker_connect),
- MAP (tracker_disconnect),
- MAP (tracker_cancel_last_call),
- MAP (tracker_search_metadata_by_text_async),
- MAP (tracker_search_metadata_by_text_and_location_async),
-#undef MAP
-};
+/* Time in second to wait for service before deciding it's not available */
+#define WAIT_TIMEOUT_SECONDS 1
-static void
-open_libtracker (void)
-{
- static gboolean done = FALSE;
+/* Time in second to wait for query results to come back */
+#define QUERY_TIMEOUT_SECONDS 10
- if (!done)
- {
- int i;
- GModule *tracker;
- GModuleFlags flags;
-
- done = TRUE;
- flags = G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL;
-
- tracker = g_module_open ("libtrackerclient.so.0", flags);
-
- if (!tracker)
- tracker = g_module_open ("libtracker.so.0", flags);
-
- if (!tracker)
- return;
-
- for (i = 0; i < G_N_ELEMENTS (tracker_dl_mapping); i++)
- {
- if (!g_module_symbol (tracker, tracker_dl_mapping[i].fn_name,
- tracker_dl_mapping[i].fn_ptr_ref))
- {
- g_warning ("Missing symbol '%s' in libtracker\n",
- tracker_dl_mapping[i].fn_name);
- g_module_close (tracker);
-
- for (i = 0; i < G_N_ELEMENTS (tracker_dl_mapping); i++)
- tracker_dl_mapping[i].fn_ptr_ref = NULL;
-
- return;
- }
- }
- }
-}
+/* If defined, we use fts:match, this has to be enabled in Tracker to
+ * work which it usually is. The alternative is to undefine it and
+ * use filename matching instead. This doesn't use the content of the
+ * file however.
+ */
+#undef FTS_MATCHING
-struct _GtkSearchEngineTrackerPrivate
+/*
+ * GtkSearchEngineTracker object
+ */
+struct _GtkSearchEngineTrackerPrivate
{
- GtkQuery *query;
- TrackerClient *client;
- gboolean query_pending;
+ GDBusConnection *connection;
+ GCancellable *cancellable;
+ GtkQuery *query;
+ gboolean query_pending;
};
G_DEFINE_TYPE (GtkSearchEngineTracker, _gtk_search_engine_tracker, GTK_TYPE_SEARCH_ENGINE);
-
static void
finalize (GObject *object)
{
GtkSearchEngineTracker *tracker;
-
+
+ g_debug ("Finalizing GtkSearchEngineTracker");
+
tracker = GTK_SEARCH_ENGINE_TRACKER (object);
-
- if (tracker->priv->query)
+
+ if (tracker->priv->cancellable)
+ {
+ g_cancellable_cancel (tracker->priv->cancellable);
+ g_object_unref (tracker->priv->cancellable);
+ tracker->priv->cancellable = NULL;
+ }
+
+ if (tracker->priv->query)
{
g_object_unref (tracker->priv->query);
tracker->priv->query = NULL;
}
- tracker_disconnect (tracker->priv->client);
+ if (tracker->priv->connection)
+ {
+ g_object_unref (tracker->priv->connection);
+ tracker->priv->connection = NULL;
+ }
G_OBJECT_CLASS (_gtk_search_engine_tracker_parent_class)->finalize (object);
}
+static GDBusConnection *
+get_connection (void)
+{
+ GDBusConnection *connection;
+ GError *error = NULL;
+ GVariant *reply;
+
+ /* Normally I hate sync calls with UIs, but we need to return NULL
+ * or a GtkSearchEngine as a result of this function.
+ */
+ connection = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, &error);
+
+ if (error)
+ {
+ g_debug ("Couldn't connect to D-Bus session bus, %s", error->message);
+ g_error_free (error);
+ return NULL;
+ }
+
+ /* If connection is set, we know it worked. */
+ g_debug ("Finding out if Tracker is available via D-Bus...");
+
+ /* We only wait 1 second max, we expect it to be very fast. If we
+ * don't get a response by then, clearly we're replaying a journal
+ * or cleaning up the DB internally. Either way, services is not
+ * available.
+ *
+ * We use the sync call here because we don't expect to be waiting
+ * long enough to block UI painting.
+ */
+ reply = g_dbus_connection_call_sync (connection,
+ DBUS_SERVICE_STATUS,
+ DBUS_PATH_STATUS,
+ DBUS_INTERFACE_STATUS,
+ "Wait",
+ NULL,
+ NULL,
+ G_DBUS_CALL_FLAGS_NONE,
+ WAIT_TIMEOUT_SECONDS * 1000,
+ NULL,
+ &error);
+
+ if (error)
+ {
+ g_debug ("Tracker is not available, %s", error->message);
+ g_error_free (error);
+ g_object_unref (connection);
+ return NULL;
+ }
+
+ g_variant_unref (reply);
+
+ g_debug ("Tracker is ready");
+
+ return connection;
+}
static void
-search_callback (gchar **results,
- GError *error,
- gpointer user_data)
+get_query_results (GtkSearchEngineTracker *engine,
+ const gchar *sparql,
+ GAsyncReadyCallback callback,
+ gpointer user_data)
+{
+ g_dbus_connection_call (engine->priv->connection,
+ DBUS_SERVICE_RESOURCES,
+ DBUS_PATH_RESOURCES,
+ DBUS_INTERFACE_RESOURCES,
+ "SparqlQuery",
+ g_variant_new ("(s)", sparql),
+ NULL,
+ G_DBUS_CALL_FLAGS_NONE,
+ QUERY_TIMEOUT_SECONDS * 1000,
+ engine->priv->cancellable,
+ callback,
+ user_data);
+}
+
+/* Stolen from libtracker-common */
+static GList *
+string_list_to_gslist (gchar **strv)
+{
+ GList *list;
+ gsize i;
+
+ list = NULL;
+
+ for (i = 0; strv[i]; i++)
+ list = g_list_prepend (list, g_strdup (strv[i]));
+
+ return g_list_reverse (list);
+}
+
+/* Stolen from libtracker-sparql */
+static gchar *
+sparql_escape_string (const gchar *literal)
+{
+ GString *str;
+ const gchar *p;
+
+ g_return_val_if_fail (literal != NULL, NULL);
+
+ str = g_string_new ("");
+ p = literal;
+
+ while (TRUE)
+ {
+ gsize len;
+
+ if (!((*p) != '\0'))
+ break;
+
+ len = strcspn ((const gchar *) p, "\t\n\r\b\f\"\\");
+ g_string_append_len (str, (const gchar *) p, (gssize) ((glong) len));
+ p = p + len;
+
+ switch (*p)
+ {
+ case '\t':
+ g_string_append (str, "\\t");
+ break;
+ case '\n':
+ g_string_append (str, "\\n");
+ break;
+ case '\r':
+ g_string_append (str, "\\r");
+ break;
+ case '\b':
+ g_string_append (str, "\\b");
+ break;
+ case '\f':
+ g_string_append (str, "\\f");
+ break;
+ case '"':
+ g_string_append (str, "\\\"");
+ break;
+ case '\\':
+ g_string_append (str, "\\\\");
+ break;
+ default:
+ continue;
+ }
+
+ p++;
+ }
+ return g_string_free (str, FALSE);
+ }
+
+static void
+sparql_append_string_literal (GString *sparql,
+ const gchar *str)
+{
+ gchar *s;
+
+ s = sparql_escape_string (str);
+
+ g_string_append_c (sparql, '"');
+ g_string_append (sparql, s);
+ g_string_append_c (sparql, '"');
+
+ g_free (s);
+}
+
+static void
+sparql_append_string_literal_lower_case (GString *sparql,
+ const gchar *str)
+{
+ gchar *s;
+
+ s = g_utf8_strdown (str, -1);
+ sparql_append_string_literal (sparql, s);
+ g_free (s);
+}
+
+static void
+query_callback (GObject *object,
+ GAsyncResult *res,
+ gpointer user_data)
{
GtkSearchEngineTracker *tracker;
- gchar **results_p;
- GList *hit_uris;
-
+ GList *hits;
+ GVariant *reply;
+ GVariant *r;
+ GVariantIter iter;
+ gchar **result;
+ GError *error = NULL;
+ gint i, n;
+
+ gdk_threads_enter ();
+
tracker = GTK_SEARCH_ENGINE_TRACKER (user_data);
- hit_uris = NULL;
-
+
tracker->priv->query_pending = FALSE;
- if (error)
+ reply = g_dbus_connection_call_finish (tracker->priv->connection, res, &error);
+ if (error)
{
- _gtk_search_engine_error ( GTK_SEARCH_ENGINE (tracker), error->message);
+ _gtk_search_engine_error (GTK_SEARCH_ENGINE (tracker), error->message);
g_error_free (error);
+ gdk_threads_leave ();
return;
}
- if (!results)
- return;
-
- for (results_p = results; *results_p; results_p++)
+ if (!reply)
{
- gchar *uri;
+ _gtk_search_engine_finished (GTK_SEARCH_ENGINE (tracker));
+ gdk_threads_leave ();
+ return;
+ }
+
+ r = g_variant_get_child_value (reply, 0);
+ g_variant_iter_init (&iter, r);
+ n = g_variant_iter_n_children (&iter);
+ result = g_new0 (gchar *, n + 1);
+ for (i = 0; i < n; i++)
+ {
+ GVariant *v;
+ const gchar **strv;
- uri = g_filename_to_uri (*results_p, NULL, NULL);
- if (uri)
- hit_uris = g_list_prepend (hit_uris, uri);
+ v = g_variant_iter_next_value (&iter);
+ strv = g_variant_get_strv (v, NULL);
+ result[i] = (gchar*)strv[0];
+ g_free (strv);
}
- _gtk_search_engine_hits_added (GTK_SEARCH_ENGINE (tracker), hit_uris);
+ /* We iterate result by result, not n at a time. */
+ hits = string_list_to_gslist (result);
+ _gtk_search_engine_hits_added (GTK_SEARCH_ENGINE (tracker), hits);
_gtk_search_engine_finished (GTK_SEARCH_ENGINE (tracker));
+ g_list_free (hits);
+ g_free (result);
+ g_variant_unref (reply);
+ g_variant_unref (r);
- g_strfreev (results);
- g_list_foreach (hit_uris, (GFunc)g_free, NULL);
- g_list_free (hit_uris);
+ gdk_threads_leave ();
}
-
static void
gtk_search_engine_tracker_start (GtkSearchEngine *engine)
{
GtkSearchEngineTracker *tracker;
- gchar *search_text, *location, *location_uri;
+ gchar *search_text;
+#ifdef FTS_MATCHING
+ gchar *location_uri;
+#endif
+ GString *sparql;
tracker = GTK_SEARCH_ENGINE_TRACKER (engine);
if (tracker->priv->query_pending)
- return;
+ {
+ g_debug ("Attempt to start a new search while one is pending, doing nothing");
+ return;
+ }
if (tracker->priv->query == NULL)
- return;
-
+ {
+ g_debug ("Attempt to start a new search with no GtkQuery, doing nothing");
+ return;
+ }
+
search_text = _gtk_query_get_text (tracker->priv->query);
+
+#ifdef FTS_MATCHING
location_uri = _gtk_query_get_location (tracker->priv->query);
+ /* Using FTS: */
+ sparql = g_string_new ("SELECT nie:url(?urn) "
+ "WHERE {"
+ " ?urn a nfo:FileDataObject ;"
+ " tracker:available true ; "
+ " fts:match ");
+ sparql_append_string_literal (sparql, search_text);
- location = NULL;
if (location_uri)
{
- location = g_filename_from_uri (location_uri, NULL, NULL);
- g_free (location_uri);
- }
-
- if (location)
- {
- tracker_search_metadata_by_text_and_location_async (tracker->priv->client,
- search_text,
- location,
- search_callback,
- tracker);
- g_free (location);
- }
- else
- {
- tracker_search_metadata_by_text_async (tracker->priv->client,
- search_text,
- search_callback,
- tracker);
+ g_string_append (sparql, " . FILTER (fn:starts-with(nie:url(?urn),");
+ sparql_append_string_literal (sparql, location_uri);
+ g_string_append (sparql, "))");
}
+ g_string_append (sparql, " } ORDER BY DESC(fts:rank(?urn)) ASC(nie:url(?urn))");
+#else /* FTS_MATCHING */
+ /* Using filename matching: */
+ sparql = g_string_new ("SELECT nie:url(?urn) "
+ "WHERE {"
+ " ?urn a nfo:FileDataObject ;"
+ " tracker:available true ."
+ " FILTER (fn:contains(fn:lower-case(nfo:fileName(?urn)),");
+ sparql_append_string_literal_lower_case (sparql, search_text);
+
+ g_string_append (sparql,
+ "))"
+ "} ORDER BY DESC(nie:url(?urn)) DESC(nfo:fileName(?urn))");
+#endif /* FTS_MATCHING */
+
tracker->priv->query_pending = TRUE;
+
+ get_query_results (tracker, sparql->str, query_callback, tracker);
+
+ g_string_free (sparql, TRUE);
g_free (search_text);
}
gtk_search_engine_tracker_stop (GtkSearchEngine *engine)
{
GtkSearchEngineTracker *tracker;
-
+
tracker = GTK_SEARCH_ENGINE_TRACKER (engine);
-
- if (tracker->priv->query && tracker->priv->query_pending)
+
+ if (tracker->priv->query && tracker->priv->query_pending)
{
- tracker_cancel_last_call (tracker->priv->client);
+ g_cancellable_cancel (tracker->priv->cancellable);
tracker->priv->query_pending = FALSE;
}
}
}
static void
-gtk_search_engine_tracker_set_query (GtkSearchEngine *engine,
- GtkQuery *query)
+gtk_search_engine_tracker_set_query (GtkSearchEngine *engine,
+ GtkQuery *query)
{
GtkSearchEngineTracker *tracker;
-
+
tracker = GTK_SEARCH_ENGINE_TRACKER (engine);
-
- if (query)
+
+ if (query)
g_object_ref (query);
if (tracker->priv->query)
{
GObjectClass *gobject_class;
GtkSearchEngineClass *engine_class;
-
+
gobject_class = G_OBJECT_CLASS (class);
gobject_class->finalize = finalize;
-
+
engine_class = GTK_SEARCH_ENGINE_CLASS (class);
engine_class->set_query = gtk_search_engine_tracker_set_query;
engine_class->start = gtk_search_engine_tracker_start;
engine_class->stop = gtk_search_engine_tracker_stop;
engine_class->is_indexed = gtk_search_engine_tracker_is_indexed;
- g_type_class_add_private (gobject_class, sizeof (GtkSearchEngineTrackerPrivate));
+ g_type_class_add_private (gobject_class,
+ sizeof (GtkSearchEngineTrackerPrivate));
}
static void
_gtk_search_engine_tracker_init (GtkSearchEngineTracker *engine)
{
- engine->priv = G_TYPE_INSTANCE_GET_PRIVATE (engine, GTK_TYPE_SEARCH_ENGINE_TRACKER, GtkSearchEngineTrackerPrivate);
+ engine->priv = G_TYPE_INSTANCE_GET_PRIVATE (engine,
+ GTK_TYPE_SEARCH_ENGINE_TRACKER,
+ GtkSearchEngineTrackerPrivate);
}
_gtk_search_engine_tracker_new (void)
{
GtkSearchEngineTracker *engine;
- TrackerClient *tracker_client;
+ GDBusConnection *connection;
- open_libtracker ();
+ g_debug ("--");
- if (!tracker_connect)
+ connection = get_connection ();
+ if (!connection)
return NULL;
- tracker_client = tracker_connect (FALSE);
-
- if (!tracker_client)
- return NULL;
+ g_debug ("Creating GtkSearchEngineTracker...");
engine = g_object_new (GTK_TYPE_SEARCH_ENGINE_TRACKER, NULL);
- engine->priv->client = tracker_client;
+ engine->priv->connection = connection;
+ engine->priv->cancellable = g_cancellable_new ();
engine->priv->query_pending = FALSE;
-
+
return GTK_SEARCH_ENGINE (engine);
}
projects / ~andy / gtk / blobdiff