[tracker/writeback: 6/7] Filled in some functions in the playlist skeleton

[Philip Van Hoof <pvanhoof src gnome org>]

commit cb8a5033232fbb64676cf7240110eae0b60e9b83
Author: Philip Van Hoof <philip codeminded be>
Date:   Fri Dec 18 13:02:13 2009 +0100

    Filled in some functions in the playlist skeleton

 src/tracker-writeback/Makefile.am                  |   12 +-
 src/tracker-writeback/tracker-writeback-playlist.c |   97 +++++++++++++------
 2 files changed, 72 insertions(+), 37 deletions(-)
---
diff --git a/src/tracker-writeback/Makefile.am b/src/tracker-writeback/Makefile.am
index 0d67a81..857287c 100644
--- a/src/tracker-writeback/Makefile.am
+++ b/src/tracker-writeback/Makefile.am
@@ -39,12 +39,12 @@ libwriteback_xmp_la_LIBADD = $(GLIB2_LIBS) $(GCOV_LIBS) $(EXEMPI_LIBS)
 endif
 
 # Playlists
-#if HAVE_TOTEM_PL_PARSER
-#modules_LTLIBRARIES += libwriteback-playlist.la
-#libwriteback_playlist_la_SOURCES = tracker-writeback-playlist.c
-#libwriteback_playlist_la_LDFLAGS = $(module_flags)
-#libwriteback_playlist_la_LIBADD = $(GLIB2_LIBS) $(GCOV_LIBS) $(TOTEM_PL_PARSER_LIBS)
-#endif
+if HAVE_TOTEM_PL_PARSER
+modules_LTLIBRARIES += libwriteback-playlist.la
+libwriteback_playlist_la_SOURCES = tracker-writeback-playlist.c
+libwriteback_playlist_la_LDFLAGS = $(module_flags)
+libwriteback_playlist_la_LIBADD = $(GLIB2_LIBS) $(GCOV_LIBS) $(TOTEM_PL_PARSER_LIBS)
+endif
 
 #
 # Binaries
diff --git a/src/tracker-writeback/tracker-writeback-playlist.c b/src/tracker-writeback/tracker-writeback-playlist.c
index 18335b0..a555a7d 100644
--- a/src/tracker-writeback/tracker-writeback-playlist.c
+++ b/src/tracker-writeback/tracker-writeback-playlist.c
@@ -22,6 +22,7 @@
 
 #include "config.h"
 
+#include <totem-pl-parser.h>
 
 #include <libtracker-common/tracker-ontology.h>
 
@@ -86,51 +87,85 @@ writeback_playlist_content_types (TrackerWritebackFile *wbf)
 	return content_types;
 }
 
-static gboolean
-writeback_playlist_update_file_metadata (TrackerWritebackFile *writeback_file,
-                                         GFile                *file,
-                                         GPtrArray            *values,
-                                         TrackerClient        *client)
+static void
+rewrite_playlist (TrackerClient *client, GFile *file, const gchar *subject)
 {
 	gchar *path;
-	guint n;
+	GPtrArray *array;
+	GError *error = NULL;
+	gchar *query;
 
 	path = g_file_get_path (file);
 
-	for (n = 0; n < values->len; n++) {
-		const GStrv row = g_ptr_array_index (values, n);
-
-		/* nfo:MediaList */
-
-		if (g_strcmp0 (row[1], TRACKER_NIE_PREFIX "title") == 0) {
-			/* TODO */
-		}
-
-		if (g_strcmp0 (row[1], TRACKER_NFO_PREFIX "hasMediaFileListEntry") == 0) {
-			/* TODO */
+	query = g_strdup_printf ("SELECT ?entry { ?unknown a nfo:MediaFileListEntry ; "
+	                                                  "nie:isStoredAs <%s> ; "
+	                                                  "nfo:entryContent ?entry"
+	                         "}", subject);
+
+	array = tracker_resources_sparql_query (client, query, &error);
+
+	g_free (query);
+
+	if (!error) {
+		if (array && array->len > 0) {
+			guint i;
+#if 0
+			TotemPlPlaylist *playlist;
+
+			playlist = totem_pl_playlist_new ();
+#endif
+			for (i = 0; i < array->len; i++) {
+				GStrv row;
+
+				row = g_ptr_array_index (array, i);
+
+				if (row && row[0]) {
+#if 0
+					TotemPlPlaylistIter iter;
+
+					totem_pl_playlist_append  (playlist, &iter);
+					totem_pl_playlist_set_value (playlist, &iter,
+					                             TOTEM_PL_PARSER_FIELD_URI,
+					                             row[0]);
+#endif
+				}
+			}
+#if 0
+			/* TODO: write to path as same type as path */
+			g_object_unref (playlist);
+#endif
+		} else {
+			/* TODO: Empty the file in @path */
 		}
 
-		if (g_strcmp0 (row[1], TRACKER_NFO_PREFIX "entryCounter") == 0) {
-			/* TODO */
-		}
+	} else {
+		g_clear_error (&error);
+	}
 
-		if (g_strcmp0 (row[1], TRACKER_NFO_PREFIX "listDuration") == 0) {
-			/* TODO */
-		}
+	if (array) {
+		g_ptr_array_foreach (array, (GFunc) g_strfreev, NULL);
+		g_ptr_array_free (array, TRUE);
+	}
 
-		/* nfo:MediaFileListEntry */
+	g_free (path);
+}
 
-		if (g_strcmp0 (row[1], TRACKER_NFO_PREFIX "entryContent") == 0) {
-			/* TODO */
-		}
+static gboolean
+writeback_playlist_update_file_metadata (TrackerWritebackFile *writeback_file,
+                                         GFile                *file,
+                                         GPtrArray            *values,
+                                         TrackerClient        *client)
+{
+	guint n;
 
-		if (g_strcmp0 (row[1], TRACKER_NFO_PREFIX "listPosition") == 0) {
-			/* TODO */
+	for (n = 0; n < values->len; n++) {
+		const GStrv row = g_ptr_array_index (values, n);
+		if (g_strcmp0 (row[1], TRACKER_NFO_PREFIX "entryCounter") == 0) {
+			rewrite_playlist (client, file, row[0]);
+			break;
 		}
 	}
 
-	g_free (path);
-
 	return TRUE;
 }