From 08296cd66d0ef4729767d97420fab96278a9af17 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Fri, 24 Jan 2014 00:24:43 +0100
Subject: Update*: move to update/

---
 src/update/UpdateDatabase.cxx | 104 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 src/update/UpdateDatabase.cxx

(limited to 'src/update/UpdateDatabase.cxx')

diff --git a/src/update/UpdateDatabase.cxx b/src/update/UpdateDatabase.cxx
new file mode 100644
index 000000000..fe49a90fb
--- /dev/null
+++ b/src/update/UpdateDatabase.cxx
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2003-2014 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" /* must be first for large file support */
+#include "UpdateDatabase.hxx"
+#include "UpdateRemove.hxx"
+#include "PlaylistVector.hxx"
+#include "Directory.hxx"
+#include "Song.hxx"
+#include "DatabaseLock.hxx"
+
+#include <assert.h>
+#include <stddef.h>
+
+void
+delete_song(Directory &dir, Song *del)
+{
+	assert(del->parent == &dir);
+
+	/* first, prevent traversers in main task from getting this */
+	dir.RemoveSong(del);
+
+	db_unlock(); /* temporary unlock, because update_remove_song() blocks */
+
+	/* now take it out of the playlist (in the main_task) */
+	update_remove_song(del);
+
+	/* finally, all possible references gone, free it */
+	del->Free();
+
+	db_lock();
+}
+
+/**
+ * Recursively remove all sub directories and songs from a directory,
+ * leaving an empty directory.
+ *
+ * Caller must lock the #db_mutex.
+ */
+static void
+clear_directory(Directory &directory)
+{
+	Directory *child, *n;
+	directory_for_each_child_safe(child, n, directory)
+		delete_directory(child);
+
+	Song *song, *ns;
+	directory_for_each_song_safe(song, ns, directory) {
+		assert(song->parent == &directory);
+		delete_song(directory, song);
+	}
+}
+
+void
+delete_directory(Directory *directory)
+{
+	assert(directory->parent != nullptr);
+
+	clear_directory(*directory);
+
+	directory->Delete();
+}
+
+bool
+delete_name_in(Directory &parent, const char *name)
+{
+	bool modified = false;
+
+	db_lock();
+	Directory *directory = parent.FindChild(name);
+
+	if (directory != nullptr) {
+		delete_directory(directory);
+		modified = true;
+	}
+
+	Song *song = parent.FindSong(name);
+	if (song != nullptr) {
+		delete_song(parent, song);
+		modified = true;
+	}
+
+	parent.playlists.erase(name);
+
+	db_unlock();
+
+	return modified;
+}
-- 
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