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/*
* Copyright (C) 2003-2015 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.ForEachChildSafe([this](Directory &child){
DeleteDirectory(&child);
});
directory.ForEachSongSafe([this, &directory](Song &song){
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;
}
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