1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* 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"
#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 "util/StringCompare.hxx"
#include "input/TextInputStream.hxx"
#include <string.h>
#include <stdlib.h>
class ExtM3uPlaylist final : public SongEnumerator {
TextInputStream tis;
public:
ExtM3uPlaylist(InputStream &is)
:tis(is) {
}
bool CheckFirstLine() {
char *line = tis.ReadLine();
if (line == nullptr)
return false;
StripRight(line);
return strcmp(line, "#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 nullptr;
}
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 Tag();
if (duration < 0)
/* 0 means unknown duration */
duration = 0;
name = StripLeft(endptr + 1);
if (*name == 0 && duration == 0)
/* no information available; don't allocate a tag
object */
return Tag();
TagBuilder tag;
tag.SetDuration(SignedSongTime::FromS(unsigned(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.Commit();
}
DetachedSong *
ExtM3uPlaylist::NextSong()
{
Tag tag;
char *line_s;
do {
line_s = tis.ReadLine();
if (line_s == nullptr)
return nullptr;
StripRight(line_s);
if (StringStartsWith(line_s, "#EXTINF:")) {
tag = extm3u_parse_tag(line_s + 8);
continue;
}
line_s = StripLeft(line_s);
} while (line_s[0] == '#' || *line_s == 0);
return new DetachedSong(line_s, std::move(tag));
}
static const char *const extm3u_suffixes[] = {
"m3u",
"m3u8",
nullptr
};
static const char *const extm3u_mime_types[] = {
"audio/x-mpegurl",
nullptr
};
const struct playlist_plugin extm3u_playlist_plugin = {
"extm3u",
nullptr,
nullptr,
nullptr,
extm3u_open_stream,
nullptr,
extm3u_suffixes,
extm3u_mime_types,
};
|
