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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 "ExtM3uPlaylistPlugin.hxx"
#include "PlaylistPlugin.hxx"
#include "SongEnumerator.hxx"
#include "DetachedSong.hxx"
#include "tag/Tag.hxx"
#include "tag/TagBuilder.hxx"
#include "util/StringUtil.hxx"
#include "TextInputStream.hxx"
#include <string.h>
#include <stdlib.h>
class ExtM3uPlaylist final : public SongEnumerator {
TextInputStream tis;
public:
ExtM3uPlaylist(InputStream &is)
:tis(is) {
}
bool CheckFirstLine() {
std::string line;
return tis.ReadLine(line) &&
strcmp(line.c_str(), "#EXTM3U") == 0;
}
virtual DetachedSong *NextSong() override;
};
static SongEnumerator *
extm3u_open_stream(InputStream &is)
{
ExtM3uPlaylist *playlist = new ExtM3uPlaylist(is);
if (!playlist->CheckFirstLine()) {
/* no EXTM3U header: fall back to the plain m3u
plugin */
delete playlist;
return NULL;
}
return playlist;
}
/**
* Parse a EXTINF line.
*
* @param line the rest of the input line after the colon
*/
static Tag *
extm3u_parse_tag(const char *line)
{
long duration;
char *endptr;
const char *name;
duration = strtol(line, &endptr, 10);
if (endptr[0] != ',')
/* malformed line */
return NULL;
if (duration < 0)
/* 0 means unknown duration */
duration = 0;
name = strchug_fast(endptr + 1);
if (*name == 0 && duration == 0)
/* no information available; don't allocate a tag
object */
return NULL;
TagBuilder tag;
tag.SetTime(duration);
/* unfortunately, there is no real specification for the
EXTM3U format, so we must assume that the string after the
comma is opaque, and is just the song name*/
if (*name != 0)
tag.AddItem(TAG_NAME, name);
return tag.CommitNew();
}
DetachedSong *
ExtM3uPlaylist::NextSong()
{
Tag *tag = NULL;
std::string line;
const char *line_s;
do {
if (!tis.ReadLine(line)) {
delete tag;
return NULL;
}
line_s = line.c_str();
if (StringStartsWith(line_s, "#EXTINF:")) {
delete tag;
tag = extm3u_parse_tag(line_s + 8);
continue;
}
line_s = strchug_fast(line_s);
} while (line_s[0] == '#' || *line_s == 0);
DetachedSong *song = new DetachedSong(line_s, std::move(*tag));
delete tag;
return song;
}
static const char *const extm3u_suffixes[] = {
"m3u",
NULL
};
static const char *const extm3u_mime_types[] = {
"audio/x-mpegurl",
NULL
};
const struct playlist_plugin extm3u_playlist_plugin = {
"extm3u",
nullptr,
nullptr,
nullptr,
extm3u_open_stream,
nullptr,
extm3u_suffixes,
extm3u_mime_types,
};
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