144 lines
4.0 KiB
C++
144 lines
4.0 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "SongSave.hxx"
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#include "pcm/AudioParser.hxx"
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#include "db/plugins/simple/Song.hxx"
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#include "song/DetachedSong.hxx"
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#include "TagSave.hxx"
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#include "lib/fmt/AudioFormatFormatter.hxx"
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#include "lib/fmt/RuntimeError.hxx"
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#include "io/LineReader.hxx"
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#include "io/BufferedOutputStream.hxx"
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#include "tag/ParseName.hxx"
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#include "tag/Tag.hxx"
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#include "tag/Builder.hxx"
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#include "time/ChronoUtil.hxx"
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#include "util/StringAPI.hxx"
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#include "util/StringBuffer.hxx"
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#include "util/StringStrip.hxx"
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#include "util/CNumberParser.hxx"
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#include <stdlib.h>
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#define SONG_MTIME "mtime"
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#define SONG_ADDED "added"
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#define SONG_END "song_end"
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static void
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range_save(BufferedOutputStream &os, unsigned start_ms, unsigned end_ms)
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{
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if (end_ms > 0)
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os.Fmt(FMT_STRING("Range: {}-{}\n"), start_ms, end_ms);
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else if (start_ms > 0)
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os.Fmt(FMT_STRING("Range: {}-\n"), start_ms);
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}
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void
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song_save(BufferedOutputStream &os, const Song &song)
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{
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os.Fmt(FMT_STRING(SONG_BEGIN "{}\n"), song.filename);
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if (!song.target.empty())
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os.Fmt(FMT_STRING("Target: {}\n"), song.target);
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range_save(os, song.start_time.ToMS(), song.end_time.ToMS());
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tag_save(os, song.tag);
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if (song.audio_format.IsDefined())
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os.Fmt(FMT_STRING("Format: {}\n"), song.audio_format);
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if (song.in_playlist)
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os.Write("InPlaylist: yes\n");
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if (!IsNegative(song.mtime))
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os.Fmt(FMT_STRING(SONG_MTIME ": {}\n"),
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std::chrono::system_clock::to_time_t(song.mtime));
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if (!IsNegative(song.added))
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os.Fmt(FMT_STRING(SONG_ADDED ": {}\n"),
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std::chrono::system_clock::to_time_t(song.added));
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os.Write(SONG_END "\n");
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}
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void
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song_save(BufferedOutputStream &os, const DetachedSong &song)
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{
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os.Fmt(FMT_STRING(SONG_BEGIN "{}\n"), song.GetURI());
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range_save(os, song.GetStartTime().ToMS(), song.GetEndTime().ToMS());
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tag_save(os, song.GetTag());
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if (!IsNegative(song.GetLastModified()))
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os.Fmt(FMT_STRING(SONG_MTIME ": {}\n"),
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std::chrono::system_clock::to_time_t(song.GetLastModified()));
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if (!IsNegative(song.GetAdded()))
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os.Fmt(FMT_STRING(SONG_ADDED ": {}\n"),
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std::chrono::system_clock::to_time_t(song.GetAdded()));
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os.Write(SONG_END "\n");
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}
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DetachedSong
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song_load(LineReader &file, const char *uri,
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std::string *target_r, bool *in_playlist_r)
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{
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DetachedSong song(uri);
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TagBuilder tag;
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char *line;
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while ((line = file.ReadLine()) != nullptr &&
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!StringIsEqual(line, SONG_END)) {
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char *colon = std::strchr(line, ':');
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if (colon == nullptr || colon == line)
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throw FmtRuntimeError("unknown line in db: {}", line);
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*colon++ = 0;
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const char *value = StripLeft(colon);
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TagType type;
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if ((type = tag_name_parse(line)) != TAG_NUM_OF_ITEM_TYPES) {
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tag.AddItemUnchecked(type, value);
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} else if (StringIsEqual(line, "Time")) {
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tag.SetDuration(SignedSongTime::FromS(ParseDouble(value)));
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} else if (StringIsEqual(line, "Target")) {
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if (target_r != nullptr)
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*target_r = value;
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} else if (StringIsEqual(line, "Format")) {
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try {
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song.SetAudioFormat(ParseAudioFormat(value,
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false));
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} catch (...) {
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/* ignore parser errors */
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}
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} else if (StringIsEqual(line, "Playlist")) {
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tag.SetHasPlaylist(StringIsEqual(value, "yes"));
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} else if (StringIsEqual(line, SONG_MTIME)) {
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song.SetLastModified(std::chrono::system_clock::from_time_t(atoi(value)));
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} else if (StringIsEqual(line, SONG_ADDED)) {
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song.SetAdded(std::chrono::system_clock::from_time_t(atoi(value)));
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} else if (StringIsEqual(line, "Range")) {
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char *endptr;
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unsigned start_ms = strtoul(value, &endptr, 10);
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unsigned end_ms = *endptr == '-'
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? strtoul(endptr + 1, nullptr, 10)
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: 0;
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song.SetStartTime(SongTime::FromMS(start_ms));
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song.SetEndTime(SongTime::FromMS(end_ms));
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} else if (StringIsEqual(line, "InPlaylist")) {
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if (in_playlist_r != nullptr)
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*in_playlist_r = StringIsEqual(value, "yes");
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} else {
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throw FmtRuntimeError("unknown line in db: {}", line);
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}
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}
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song.SetTag(tag.Commit());
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return song;
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}
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