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/*
* Copyright (C) 2003-2013 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 "DirectorySave.hxx"
#include "Directory.hxx"
#include "Song.hxx"
#include "SongSave.hxx"
#include "PlaylistDatabase.hxx"
#include "TextFile.hxx"
#include "util/StringUtil.hxx"
#include "util/NumberParser.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
#include <stddef.h>
#define DIRECTORY_DIR "directory: "
#define DIRECTORY_MTIME "mtime: "
#define DIRECTORY_BEGIN "begin: "
#define DIRECTORY_END "end: "
static constexpr Domain directory_domain("directory");
void
directory_save(FILE *fp, const Directory &directory)
{
if (!directory.IsRoot()) {
fprintf(fp, DIRECTORY_MTIME "%lu\n",
(unsigned long)directory.mtime);
fprintf(fp, "%s%s\n", DIRECTORY_BEGIN, directory.GetPath());
}
Directory *cur;
directory_for_each_child(cur, directory) {
fprintf(fp, DIRECTORY_DIR "%s\n", cur->GetName());
directory_save(fp, *cur);
if (ferror(fp))
return;
}
Song *song;
directory_for_each_song(song, directory)
song_save(fp, *song);
playlist_vector_save(fp, directory.playlists);
if (!directory.IsRoot())
fprintf(fp, DIRECTORY_END "%s\n", directory.GetPath());
}
static Directory *
directory_load_subdir(TextFile &file, Directory &parent, const char *name,
Error &error)
{
bool success;
if (parent.FindChild(name) != nullptr) {
error.Format(directory_domain,
"Duplicate subdirectory '%s'", name);
return nullptr;
}
Directory *directory = parent.CreateChild(name);
const char *line = file.ReadLine();
if (line == nullptr) {
error.Set(directory_domain, "Unexpected end of file");
directory->Delete();
return nullptr;
}
if (StringStartsWith(line, DIRECTORY_MTIME)) {
directory->mtime =
ParseUint64(line + sizeof(DIRECTORY_MTIME) - 1);
line = file.ReadLine();
if (line == nullptr) {
error.Set(directory_domain, "Unexpected end of file");
directory->Delete();
return nullptr;
}
}
if (!StringStartsWith(line, DIRECTORY_BEGIN)) {
error.Format(directory_domain, "Malformed line: %s", line);
directory->Delete();
return nullptr;
}
success = directory_load(file, *directory, error);
if (!success) {
directory->Delete();
return nullptr;
}
return directory;
}
bool
directory_load(TextFile &file, Directory &directory, Error &error)
{
const char *line;
while ((line = file.ReadLine()) != nullptr &&
!StringStartsWith(line, DIRECTORY_END)) {
if (StringStartsWith(line, DIRECTORY_DIR)) {
Directory *subdir =
directory_load_subdir(file, directory,
line + sizeof(DIRECTORY_DIR) - 1,
error);
if (subdir == nullptr)
return false;
} else if (StringStartsWith(line, SONG_BEGIN)) {
const char *name = line + sizeof(SONG_BEGIN) - 1;
Song *song;
if (directory.FindSong(name) != nullptr) {
error.Format(directory_domain,
"Duplicate song '%s'", name);
return false;
}
song = song_load(file, &directory, name, error);
if (song == nullptr)
return false;
directory.AddSong(song);
} else if (StringStartsWith(line, PLAYLIST_META_BEGIN)) {
const char *name = line + sizeof(PLAYLIST_META_BEGIN) - 1;
if (!playlist_metadata_load(file, directory.playlists,
name, error))
return false;
} else {
error.Format(directory_domain,
"Malformed line: %s", line);
return false;
}
}
return true;
}
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