diff options
Diffstat (limited to 'src/db/update/Editor.cxx')
-rw-r--r-- | src/db/update/Editor.cxx | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/src/db/update/Editor.cxx b/src/db/update/Editor.cxx new file mode 100644 index 000000000..c3c1a23d6 --- /dev/null +++ b/src/db/update/Editor.cxx @@ -0,0 +1,120 @@ +/* + * 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 "Editor.hxx" +#include "Remove.hxx" +#include "db/PlaylistVector.hxx" +#include "db/DatabaseLock.hxx" +#include "db/plugins/simple/Directory.hxx" +#include "db/plugins/simple/Song.hxx" + +#include <assert.h> +#include <stddef.h> + +void +DatabaseEditor::DeleteSong(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) */ + remove.Remove(del); + + /* finally, all possible references gone, free it */ + del->Free(); + + db_lock(); +} + +void +DatabaseEditor::LockDeleteSong(Directory &parent, Song *song) +{ + db_lock(); + DeleteSong(parent, song); + db_unlock(); +} + +/** + * Recursively remove all sub directories and songs from a directory, + * leaving an empty directory. + * + * Caller must lock the #db_mutex. + */ +inline void +DatabaseEditor::ClearDirectory(Directory &directory) +{ + Directory *child, *n; + directory_for_each_child_safe(child, n, directory) + DeleteDirectory(child); + + Song *song, *ns; + directory_for_each_song_safe(song, ns, directory) { + assert(song->parent == &directory); + DeleteSong(directory, song); + } +} + +void +DatabaseEditor::DeleteDirectory(Directory *directory) +{ + assert(directory->parent != nullptr); + + ClearDirectory(*directory); + + directory->Delete(); +} + +void +DatabaseEditor::LockDeleteDirectory(Directory *directory) +{ + db_lock(); + DeleteDirectory(directory); + db_unlock(); +} + +bool +DatabaseEditor::DeleteNameIn(Directory &parent, const char *name) +{ + bool modified = false; + + db_lock(); + Directory *directory = parent.FindChild(name); + + if (directory != nullptr) { + DeleteDirectory(directory); + modified = true; + } + + Song *song = parent.FindSong(name); + if (song != nullptr) { + DeleteSong(parent, song); + modified = true; + } + + parent.playlists.erase(name); + + db_unlock(); + + return modified; +} |