/*
- * Copyright (C) 2009-2010 Nokia <ivan.frade@nokia.com>
+ * 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/>.
*
* Authors: Jürg Billeter <juerg.billeter@codethink.co.uk>
* Martyn Russell <martyn@lanedo.com>
#include "config.h"
+#include <string.h>
+
#include <gio/gio.h>
#include <gmodule.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
#include "gtksearchenginetracker.h"
+#define DBUS_SERVICE_RESOURCES "org.freedesktop.Tracker1"
+#define DBUS_PATH_RESOURCES "/org/freedesktop/Tracker1/Resources"
+#define DBUS_INTERFACE_RESOURCES "org.freedesktop.Tracker1.Resources"
+
+#define DBUS_SERVICE_STATUS "org.freedesktop.Tracker1"
+#define DBUS_PATH_STATUS "/org/freedesktop/Tracker1/Status"
+#define DBUS_INTERFACE_STATUS "org.freedesktop.Tracker1.Status"
+
+/* Time in second to wait for service before deciding it's not available */
+#define WAIT_TIMEOUT_SECONDS 1
+
+/* Time in second to wait for query results to come back */
+#define QUERY_TIMEOUT_SECONDS 10
+
/* 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
*/
#undef FTS_MATCHING
-#define MODULE_FILENAME "libtracker-sparql-0.10.so.0"
-
-#define MODULE_MAP(a) { #a, (gpointer *)&a }
-
-/* Connection object */
-typedef struct _TrackerSparqlConnection TrackerSparqlConnection;
-
-#define TRACKER_SPARQL_TYPE_CONNECTION (tracker_sparql_connection_get_type ())
-#define TRACKER_SPARQL_CONNECTION(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TRACKER_SPARQL_TYPE_CONNECTION, TrackerSparqlConnection))
-
-/* Cursor object */
-typedef struct _TrackerSparqlCursor TrackerSparqlCursor;
-
-#define TRACKER_SPARQL_TYPE_CURSOR (tracker_sparql_cursor_get_type ())
-#define TRACKER_SPARQL_CURSOR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), TRACKER_SPARQL_TYPE_CURSOR, TrackerSparqlCursor))
-
-/* API */
-static GType (*tracker_sparql_connection_get_type) (void) = NULL;
-static TrackerSparqlConnection * (*tracker_sparql_connection_get) (GCancellable *cancellable,
- GError **error) = NULL;
-static void (*tracker_sparql_connection_query_async) (TrackerSparqlConnection *self,
- const gchar *sparql,
- GCancellable *cancellable,
- GAsyncReadyCallback callback,
- gpointer user_data) = NULL;
-static TrackerSparqlCursor * (*tracker_sparql_connection_query_finish) (TrackerSparqlConnection *self,
- GAsyncResult *_res_,
- GError **error) = NULL;
-static GType (*tracker_sparql_cursor_get_type) (void) = NULL;
-static void (*tracker_sparql_cursor_next_async) (TrackerSparqlCursor *self,
- GCancellable *cancellable,
- GAsyncReadyCallback callback,
- gpointer user_data) = NULL;
-static gboolean (*tracker_sparql_cursor_next_finish) (TrackerSparqlCursor *self,
- GAsyncResult *_res_,
- GError **error) = NULL;
-static const gchar * (*tracker_sparql_cursor_get_string) (TrackerSparqlCursor *self,
- gint *column,
- glong *length) = NULL;
-static gchar * (*tracker_sparql_escape_string) (const gchar *literal) = NULL;
-
-static struct TrackerFunctions
-{
- const char *name;
- gpointer *pointer;
-} funcs[] = {
- MODULE_MAP (tracker_sparql_connection_get_type),
- MODULE_MAP (tracker_sparql_connection_get),
- MODULE_MAP (tracker_sparql_connection_query_async),
- MODULE_MAP (tracker_sparql_connection_query_finish),
- MODULE_MAP (tracker_sparql_cursor_get_type),
- MODULE_MAP (tracker_sparql_cursor_next_async),
- MODULE_MAP (tracker_sparql_cursor_next_finish),
- MODULE_MAP (tracker_sparql_cursor_get_string),
- MODULE_MAP (tracker_sparql_escape_string)
-};
-
-static gboolean
-init (void)
-{
- static gboolean inited = FALSE;
- gint i;
- GModule *m;
- GModuleFlags flags;
-
- if (inited)
- return TRUE;
-
- flags = G_MODULE_BIND_LAZY | G_MODULE_BIND_LOCAL;
-
- /* Only support 0.10 onwards */
- if ((m = g_module_open (MODULE_FILENAME, flags)) == NULL)
- {
- g_debug ("No tracker backend available or it is not new enough");
- g_debug ("Only available using '%s'", MODULE_FILENAME);
- return FALSE;
- }
-
- inited = TRUE;
-
- /* Check for the symbols we need */
- for (i = 0; i < G_N_ELEMENTS (funcs); i++)
- {
- if (!g_module_symbol (m, funcs[i].name, funcs[i].pointer))
- {
- g_warning ("Missing symbol '%s' in libtracker-sparql\n",
- funcs[i].name);
- g_module_close (m);
-
- for (i = 0; i < G_N_ELEMENTS (funcs); i++)
- funcs[i].pointer = NULL;
-
- return FALSE;
- }
- }
-
- g_debug ("Loaded Tracker library and all required symbols");
-
- return TRUE;
-}
-
/*
* GtkSearchEngineTracker object
*/
struct _GtkSearchEngineTrackerPrivate
{
- TrackerSparqlConnection *connection;
- GCancellable *cancellable;
+ GDBusConnection *connection;
+ GCancellable *cancellable;
GtkQuery *query;
gboolean query_pending;
};
G_DEFINE_TYPE (GtkSearchEngineTracker, _gtk_search_engine_tracker, GTK_TYPE_SEARCH_ENGINE);
-static void cursor_callback (GObject *object,
- GAsyncResult *result,
- gpointer user_data);
-
static void
finalize (GObject *object)
{
GtkSearchEngineTracker *tracker;
+ g_debug ("Finalizing GtkSearchEngineTracker");
+
tracker = GTK_SEARCH_ENGINE_TRACKER (object);
if (tracker->priv->cancellable)
- {
- g_cancellable_cancel (tracker->priv->cancellable);
- g_object_unref (tracker->priv->cancellable);
- tracker->priv->cancellable = NULL;
- }
+ {
+ g_cancellable_cancel (tracker->priv->cancellable);
+ g_object_unref (tracker->priv->cancellable);
+ tracker->priv->cancellable = NULL;
+ }
if (tracker->priv->query)
{
}
if (tracker->priv->connection)
- {
- g_object_unref (tracker->priv->connection);
- tracker->priv->connection = NULL;
- }
+ {
+ g_object_unref (tracker->priv->connection);
+ tracker->priv->connection = NULL;
+ }
G_OBJECT_CLASS (_gtk_search_engine_tracker_parent_class)->finalize (object);
}
-static void
-cursor_next (GtkSearchEngineTracker *tracker,
- TrackerSparqlCursor *cursor)
+static GDBusConnection *
+get_connection (void)
{
- tracker_sparql_cursor_next_async (cursor,
- tracker->priv->cancellable,
- cursor_callback,
- tracker);
-}
-
-static void
-cursor_callback (GObject *object,
- GAsyncResult *result,
- gpointer user_data)
-{
- GtkSearchEngineTracker *tracker;
+ GDBusConnection *connection;
GError *error = NULL;
- TrackerSparqlCursor *cursor;
- GList *hits;
- gboolean success;
+ GVariant *reply;
- gdk_threads_enter ();
+ /* 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);
- tracker = GTK_SEARCH_ENGINE_TRACKER (user_data);
+ if (error)
+ {
+ g_debug ("Couldn't connect to D-Bus session bus, %s", error->message);
+ g_error_free (error);
+ return NULL;
+ }
- cursor = TRACKER_SPARQL_CURSOR (object);
- success = tracker_sparql_cursor_next_finish (cursor, result, &error);
+ /* 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)
{
- _gtk_search_engine_error (GTK_SEARCH_ENGINE (tracker), error->message);
-
+ g_debug ("Tracker is not available, %s", error->message);
g_error_free (error);
+ g_object_unref (connection);
+ return NULL;
+ }
- if (cursor)
- g_object_unref (cursor);
+ g_variant_unref (reply);
- gdk_threads_leave ();
- return;
- }
+ g_debug ("Tracker is ready");
- if (!success)
- {
- _gtk_search_engine_finished (GTK_SEARCH_ENGINE (tracker));
+ return connection;
+}
- if (cursor)
- g_object_unref (cursor);
+static void
+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);
+}
- gdk_threads_leave ();
- return;
- }
+/* Stolen from libtracker-common */
+static GList *
+string_list_to_gslist (gchar **strv)
+{
+ GList *list;
+ gsize i;
- /* We iterate result by result, not n at a time. */
- hits = g_list_append (NULL, (gchar*) tracker_sparql_cursor_get_string (cursor, 0, NULL));
- _gtk_search_engine_hits_added (GTK_SEARCH_ENGINE (tracker), hits);
- g_list_free (hits);
+ list = NULL;
- /* Get next */
- cursor_next (tracker, cursor);
+ for (i = 0; strv[i]; i++)
+ list = g_list_prepend (list, g_strdup (strv[i]));
- gdk_threads_leave ();
+ 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 *result,
+ GAsyncResult *res,
gpointer user_data)
{
GtkSearchEngineTracker *tracker;
- TrackerSparqlConnection *connection;
- TrackerSparqlCursor *cursor;
+ GList *hits;
+ GVariant *reply;
+ GVariant *r;
+ GVariantIter iter;
+ gchar **result;
GError *error = NULL;
+ gint i, n;
gdk_threads_enter ();
tracker->priv->query_pending = FALSE;
- connection = TRACKER_SPARQL_CONNECTION (object);
- cursor = tracker_sparql_connection_query_finish (connection,
- result,
- &error);
-
- g_debug ("Query returned cursor:%p", cursor);
-
+ reply = g_dbus_connection_call_finish (tracker->priv->connection, res, &error);
if (error)
{
_gtk_search_engine_error (GTK_SEARCH_ENGINE (tracker), error->message);
return;
}
- if (!cursor)
- {
- _gtk_search_engine_finished (GTK_SEARCH_ENGINE (tracker));
- gdk_threads_leave ();
- return;
- }
-
- cursor_next (tracker, cursor);
- gdk_threads_leave ();
-}
+ if (!reply)
+ {
+ _gtk_search_engine_finished (GTK_SEARCH_ENGINE (tracker));
+ gdk_threads_leave ();
+ return;
+ }
-static void
-sparql_append_string_literal (GString *sparql,
- const gchar *str)
-{
- gchar *s;
+ 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;
- s = tracker_sparql_escape_string (str);
+ v = g_variant_iter_next_value (&iter);
+ strv = g_variant_get_strv (v, NULL);
+ result[i] = (gchar*)strv[0];
+ g_free (strv);
+ }
- g_string_append_c (sparql, '"');
- g_string_append (sparql, s);
- g_string_append_c (sparql, '"');
+ /* 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_free (s);
+ gdk_threads_leave ();
}
static void
gtk_search_engine_tracker_start (GtkSearchEngine *engine)
{
GtkSearchEngineTracker *tracker;
- gchar *search_text, *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)
- {
- g_debug ("Attempt to start a new search while one is pending, doing nothing");
- return;
- }
+ {
+ g_debug ("Attempt to start a new search while one is pending, doing nothing");
+ return;
+ }
if (tracker->priv->query == NULL)
- {
- g_debug ("Attempt to start a new search with no GtkQuery, doing nothing");
- return;
- }
+ {
+ g_debug ("Attempt to start a new search with no GtkQuery, doing nothing");
+ return;
+ }
search_text = _gtk_query_get_text (tracker->priv->query);
- location_uri = _gtk_query_get_location (tracker->priv->query);
-
- g_debug ("Query starting, search criteria:'%s', location:'%s'", search_text, location_uri);
#ifdef FTS_MATCHING
+ location_uri = _gtk_query_get_location (tracker->priv->query);
/* Using FTS: */
sparql = g_string_new ("SELECT nie:url(?urn) "
"WHERE {"
sparql_append_string_literal (sparql, search_text);
if (location_uri)
- {
- 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, " . 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 */
"WHERE {"
" ?urn a nfo:FileDataObject ;"
" tracker:available true ."
- " FILTER (fn:contains(nfo:fileName(?urn),");
- sparql_append_string_literal (sparql, search_text);
+ " FILTER (fn:contains(fn:lower-case(nfo:fileName(?urn)),");
+ sparql_append_string_literal_lower_case (sparql, search_text);
- g_string_append (sparql,
+ g_string_append (sparql,
"))"
"} ORDER BY DESC(nie:url(?urn)) DESC(nfo:fileName(?urn))");
#endif /* FTS_MATCHING */
- tracker_sparql_connection_query_async (tracker->priv->connection,
- sparql->str,
- tracker->priv->cancellable,
- query_callback,
- tracker);
- g_string_free (sparql, TRUE);
-
tracker->priv->query_pending = TRUE;
+
+ get_query_results (tracker, sparql->str, query_callback, tracker);
+
+ g_string_free (sparql, TRUE);
g_free (search_text);
}
tracker = GTK_SEARCH_ENGINE_TRACKER (engine);
- g_debug ("Query stopping");
-
if (tracker->priv->query && tracker->priv->query_pending)
{
- g_cancellable_cancel (tracker->priv->cancellable);
+ g_cancellable_cancel (tracker->priv->cancellable);
tracker->priv->query_pending = FALSE;
}
}
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_new (void)
{
GtkSearchEngineTracker *engine;
- TrackerSparqlConnection *connection;
- GCancellable *cancellable;
- GError *error = NULL;
+ GDBusConnection *connection;
- if (!init ())
- return NULL;
+ g_debug ("--");
- g_debug ("Creating GtkSearchEngineTracker...");
+ connection = get_connection ();
+ if (!connection)
+ return NULL;
- cancellable = g_cancellable_new ();
- connection = tracker_sparql_connection_get (cancellable, &error);
-
- if (error)
- {
- g_warning ("Could not establish a connection to Tracker: %s", error->message);
- g_error_free (error);
- return NULL;
- }
- else if (!connection)
- {
- g_warning ("Could not establish a connection to Tracker, no TrackerSparqlConnection was returned");
- return NULL;
- }
+ g_debug ("Creating GtkSearchEngineTracker...");
engine = g_object_new (GTK_TYPE_SEARCH_ENGINE_TRACKER, NULL);
engine->priv->connection = connection;
- engine->priv->cancellable = cancellable;
+ engine->priv->cancellable = g_cancellable_new ();
engine->priv->query_pending = FALSE;
return GTK_SEARCH_ENGINE (engine);
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