1 files changed, 114 insertions, 0 deletions
diff --git a/src/PlaylistVector.cxx b/src/PlaylistVector.cxx
new file mode 100644
index 000000000..ea3172d0d
--- /dev/null
+++ b/src/PlaylistVector.cxx
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program 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 program 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 program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "PlaylistVector.hxx"
+#include "db_lock.h"
+
+#include <assert.h>
+#include <string.h>
+#include <glib.h>
+
+static struct playlist_metadata *
+playlist_metadata_new(const char *name, time_t mtime)
+{
+	assert(name != NULL);
+
+	struct playlist_metadata *pm = g_slice_new(struct playlist_metadata);
+	pm->name = g_strdup(name);
+	pm->mtime = mtime;
+	return pm;
+}
+
+static void
+playlist_metadata_free(struct playlist_metadata *pm)
+{
+	assert(pm != NULL);
+	assert(pm->name != NULL);
+
+	g_free(pm->name);
+	g_slice_free(struct playlist_metadata, pm);
+}
+
+void
+playlist_vector_deinit(struct list_head *pv)
+{
+	assert(pv != NULL);
+
+	struct playlist_metadata *pm, *n;
+	playlist_vector_for_each_safe(pm, n, pv)
+		playlist_metadata_free(pm);
+}
+
+struct playlist_metadata *
+playlist_vector_find(struct list_head *pv, const char *name)
+{
+	assert(holding_db_lock());
+	assert(pv != NULL);
+	assert(name != NULL);
+
+	struct playlist_metadata *pm;
+	playlist_vector_for_each(pm, pv)
+		if (strcmp(pm->name, name) == 0)
+			return pm;
+
+	return NULL;
+}
+
+void
+playlist_vector_add(struct list_head *pv,
+		    const char *name, time_t mtime)
+{
+	assert(holding_db_lock());
+
+	struct playlist_metadata *pm = playlist_metadata_new(name, mtime);
+	list_add_tail(&pm->siblings, pv);
+}
+
+bool
+playlist_vector_update_or_add(struct list_head *pv,
+			      const char *name, time_t mtime)
+{
+	assert(holding_db_lock());
+
+	struct playlist_metadata *pm = playlist_vector_find(pv, name);
+	if (pm != NULL) {
+		if (mtime == pm->mtime)
+			return false;
+
+		pm->mtime = mtime;
+	} else
+		playlist_vector_add(pv, name, mtime);
+
+	return true;
+}
+
+bool
+playlist_vector_remove(struct list_head *pv, const char *name)
+{
+	assert(holding_db_lock());
+
+	struct playlist_metadata *pm = playlist_vector_find(pv, name);
+	if (pm == NULL)
+		return false;
+
+	list_del(&pm->siblings);
+	playlist_metadata_free(pm);
+	return true;
+}