Another attempt to fix the http blog redirects.
[WebKit-https.git] / Websites / webkit.org / blog / wp-includes / ID3 / module.tag.lyrics3.php
1 <?php
2 /////////////////////////////////////////////////////////////////
3 /// getID3() by James Heinrich <info@getid3.org>               //
4 //  available at http://getid3.sourceforge.net                 //
5 //            or http://www.getid3.org                         //
6 //          also https://github.com/JamesHeinrich/getID3       //
7 /////////////////////////////////////////////////////////////////
8 // See readme.txt for more details                             //
9 /////////////////////////////////////////////////////////////////
10 ///                                                            //
11 // module.tag.lyrics3.php                                      //
12 // module for analyzing Lyrics3 tags                           //
13 // dependencies: module.tag.apetag.php (optional)              //
14 //                                                            ///
15 /////////////////////////////////////////////////////////////////
16
17
18 class getid3_lyrics3 extends getid3_handler
19 {
20
21         public function Analyze() {
22                 $info = &$this->getid3->info;
23
24                 // http://www.volweb.cz/str/tags.htm
25
26                 if (!getid3_lib::intValueSupported($info['filesize'])) {
27                         $info['warning'][] = 'Unable to check for Lyrics3 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
28                         return false;
29                 }
30
31                 $this->fseek((0 - 128 - 9 - 6), SEEK_END);          // end - ID3v1 - "LYRICSEND" - [Lyrics3size]
32                 $lyrics3_id3v1 = $this->fread(128 + 9 + 6);
33                 $lyrics3lsz    = substr($lyrics3_id3v1,  0,   6); // Lyrics3size
34                 $lyrics3end    = substr($lyrics3_id3v1,  6,   9); // LYRICSEND or LYRICS200
35                 $id3v1tag      = substr($lyrics3_id3v1, 15, 128); // ID3v1
36
37                 if ($lyrics3end == 'LYRICSEND') {
38                         // Lyrics3v1, ID3v1, no APE
39
40                         $lyrics3size    = 5100;
41                         $lyrics3offset  = $info['filesize'] - 128 - $lyrics3size;
42                         $lyrics3version = 1;
43
44                 } elseif ($lyrics3end == 'LYRICS200') {
45                         // Lyrics3v2, ID3v1, no APE
46
47                         // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
48                         $lyrics3size    = $lyrics3lsz + 6 + strlen('LYRICS200');
49                         $lyrics3offset  = $info['filesize'] - 128 - $lyrics3size;
50                         $lyrics3version = 2;
51
52                 } elseif (substr(strrev($lyrics3_id3v1), 0, 9) == strrev('LYRICSEND')) {
53                         // Lyrics3v1, no ID3v1, no APE
54
55                         $lyrics3size    = 5100;
56                         $lyrics3offset  = $info['filesize'] - $lyrics3size;
57                         $lyrics3version = 1;
58                         $lyrics3offset  = $info['filesize'] - $lyrics3size;
59
60                 } elseif (substr(strrev($lyrics3_id3v1), 0, 9) == strrev('LYRICS200')) {
61
62                         // Lyrics3v2, no ID3v1, no APE
63
64                         $lyrics3size    = strrev(substr(strrev($lyrics3_id3v1), 9, 6)) + 6 + strlen('LYRICS200'); // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
65                         $lyrics3offset  = $info['filesize'] - $lyrics3size;
66                         $lyrics3version = 2;
67
68                 } else {
69
70                         if (isset($info['ape']['tag_offset_start']) && ($info['ape']['tag_offset_start'] > 15)) {
71
72                                 $this->fseek($info['ape']['tag_offset_start'] - 15);
73                                 $lyrics3lsz = $this->fread(6);
74                                 $lyrics3end = $this->fread(9);
75
76                                 if ($lyrics3end == 'LYRICSEND') {
77                                         // Lyrics3v1, APE, maybe ID3v1
78
79                                         $lyrics3size    = 5100;
80                                         $lyrics3offset  = $info['ape']['tag_offset_start'] - $lyrics3size;
81                                         $info['avdataend'] = $lyrics3offset;
82                                         $lyrics3version = 1;
83                                         $info['warning'][] = 'APE tag located after Lyrics3, will probably break Lyrics3 compatability';
84
85                                 } elseif ($lyrics3end == 'LYRICS200') {
86                                         // Lyrics3v2, APE, maybe ID3v1
87
88                                         $lyrics3size    = $lyrics3lsz + 6 + strlen('LYRICS200'); // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
89                                         $lyrics3offset  = $info['ape']['tag_offset_start'] - $lyrics3size;
90                                         $lyrics3version = 2;
91                                         $info['warning'][] = 'APE tag located after Lyrics3, will probably break Lyrics3 compatability';
92
93                                 }
94
95                         }
96
97                 }
98
99                 if (isset($lyrics3offset)) {
100                         $info['avdataend'] = $lyrics3offset;
101                         $this->getLyrics3Data($lyrics3offset, $lyrics3version, $lyrics3size);
102
103                         if (!isset($info['ape'])) {
104                                 $GETID3_ERRORARRAY = &$info['warning'];
105                                 getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.apetag.php', __FILE__, true);
106                                 $getid3_temp = new getID3();
107                                 $getid3_temp->openfile($this->getid3->filename);
108                                 $getid3_apetag = new getid3_apetag($getid3_temp);
109                                 $getid3_apetag->overrideendoffset = $info['lyrics3']['tag_offset_start'];
110                                 $getid3_apetag->Analyze();
111                                 if (!empty($getid3_temp->info['ape'])) {
112                                         $info['ape'] = $getid3_temp->info['ape'];
113                                 }
114                                 if (!empty($getid3_temp->info['replay_gain'])) {
115                                         $info['replay_gain'] = $getid3_temp->info['replay_gain'];
116                                 }
117                                 unset($getid3_temp, $getid3_apetag);
118                         }
119
120                 }
121
122                 return true;
123         }
124
125         public function getLyrics3Data($endoffset, $version, $length) {
126                 // http://www.volweb.cz/str/tags.htm
127
128                 $info = &$this->getid3->info;
129
130                 if (!getid3_lib::intValueSupported($endoffset)) {
131                         $info['warning'][] = 'Unable to check for Lyrics3 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
132                         return false;
133                 }
134
135                 $this->fseek($endoffset);
136                 if ($length <= 0) {
137                         return false;
138                 }
139                 $rawdata = $this->fread($length);
140
141                 $ParsedLyrics3['raw']['lyrics3version'] = $version;
142                 $ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
143                 $ParsedLyrics3['tag_offset_start']      = $endoffset;
144                 $ParsedLyrics3['tag_offset_end']        = $endoffset + $length - 1;
145
146                 if (substr($rawdata, 0, 11) != 'LYRICSBEGIN') {
147                         if (strpos($rawdata, 'LYRICSBEGIN') !== false) {
148
149                                 $info['warning'][] = '"LYRICSBEGIN" expected at '.$endoffset.' but actually found at '.($endoffset + strpos($rawdata, 'LYRICSBEGIN')).' - this is invalid for Lyrics3 v'.$version;
150                                 $info['avdataend'] = $endoffset + strpos($rawdata, 'LYRICSBEGIN');
151                                 $rawdata = substr($rawdata, strpos($rawdata, 'LYRICSBEGIN'));
152                                 $length = strlen($rawdata);
153                                 $ParsedLyrics3['tag_offset_start'] = $info['avdataend'];
154                                 $ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
155
156                         } else {
157
158                                 $info['error'][] = '"LYRICSBEGIN" expected at '.$endoffset.' but found "'.substr($rawdata, 0, 11).'" instead';
159                                 return false;
160
161                         }
162
163                 }
164
165                 switch ($version) {
166
167                         case 1:
168                                 if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICSEND') {
169                                         $ParsedLyrics3['raw']['LYR'] = trim(substr($rawdata, 11, strlen($rawdata) - 11 - 9));
170                                         $this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
171                                 } else {
172                                         $info['error'][] = '"LYRICSEND" expected at '.($this->ftell() - 11 + $length - 9).' but found "'.substr($rawdata, strlen($rawdata) - 9, 9).'" instead';
173                                         return false;
174                                 }
175                                 break;
176
177                         case 2:
178                                 if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICS200') {
179                                         $ParsedLyrics3['raw']['unparsed'] = substr($rawdata, 11, strlen($rawdata) - 11 - 9 - 6); // LYRICSBEGIN + LYRICS200 + LSZ
180                                         $rawdata = $ParsedLyrics3['raw']['unparsed'];
181                                         while (strlen($rawdata) > 0) {
182                                                 $fieldname = substr($rawdata, 0, 3);
183                                                 $fieldsize = (int) substr($rawdata, 3, 5);
184                                                 $ParsedLyrics3['raw'][$fieldname] = substr($rawdata, 8, $fieldsize);
185                                                 $rawdata = substr($rawdata, 3 + 5 + $fieldsize);
186                                         }
187
188                                         if (isset($ParsedLyrics3['raw']['IND'])) {
189                                                 $i = 0;
190                                                 $flagnames = array('lyrics', 'timestamps', 'inhibitrandom');
191                                                 foreach ($flagnames as $flagname) {
192                                                         if (strlen($ParsedLyrics3['raw']['IND']) > $i++) {
193                                                                 $ParsedLyrics3['flags'][$flagname] = $this->IntString2Bool(substr($ParsedLyrics3['raw']['IND'], $i, 1 - 1));
194                                                         }
195                                                 }
196                                         }
197
198                                         $fieldnametranslation = array('ETT'=>'title', 'EAR'=>'artist', 'EAL'=>'album', 'INF'=>'comment', 'AUT'=>'author');
199                                         foreach ($fieldnametranslation as $key => $value) {
200                                                 if (isset($ParsedLyrics3['raw'][$key])) {
201                                                         $ParsedLyrics3['comments'][$value][] = trim($ParsedLyrics3['raw'][$key]);
202                                                 }
203                                         }
204
205                                         if (isset($ParsedLyrics3['raw']['IMG'])) {
206                                                 $imagestrings = explode("\r\n", $ParsedLyrics3['raw']['IMG']);
207                                                 foreach ($imagestrings as $key => $imagestring) {
208                                                         if (strpos($imagestring, '||') !== false) {
209                                                                 $imagearray = explode('||', $imagestring);
210                                                                 $ParsedLyrics3['images'][$key]['filename']     =                                (isset($imagearray[0]) ? $imagearray[0] : '');
211                                                                 $ParsedLyrics3['images'][$key]['description']  =                                (isset($imagearray[1]) ? $imagearray[1] : '');
212                                                                 $ParsedLyrics3['images'][$key]['timestamp']    = $this->Lyrics3Timestamp2Seconds(isset($imagearray[2]) ? $imagearray[2] : '');
213                                                         }
214                                                 }
215                                         }
216                                         if (isset($ParsedLyrics3['raw']['LYR'])) {
217                                                 $this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
218                                         }
219                                 } else {
220                                         $info['error'][] = '"LYRICS200" expected at '.($this->ftell() - 11 + $length - 9).' but found "'.substr($rawdata, strlen($rawdata) - 9, 9).'" instead';
221                                         return false;
222                                 }
223                                 break;
224
225                         default:
226                                 $info['error'][] = 'Cannot process Lyrics3 version '.$version.' (only v1 and v2)';
227                                 return false;
228                                 break;
229                 }
230
231
232                 if (isset($info['id3v1']['tag_offset_start']) && ($info['id3v1']['tag_offset_start'] <= $ParsedLyrics3['tag_offset_end'])) {
233                         $info['warning'][] = 'ID3v1 tag information ignored since it appears to be a false synch in Lyrics3 tag data';
234                         unset($info['id3v1']);
235                         foreach ($info['warning'] as $key => $value) {
236                                 if ($value == 'Some ID3v1 fields do not use NULL characters for padding') {
237                                         unset($info['warning'][$key]);
238                                         sort($info['warning']);
239                                         break;
240                                 }
241                         }
242                 }
243
244                 $info['lyrics3'] = $ParsedLyrics3;
245
246                 return true;
247         }
248
249         public function Lyrics3Timestamp2Seconds($rawtimestamp) {
250                 if (preg_match('#^\\[([0-9]{2}):([0-9]{2})\\]$#', $rawtimestamp, $regs)) {
251                         return (int) (($regs[1] * 60) + $regs[2]);
252                 }
253                 return false;
254         }
255
256         public function Lyrics3LyricsTimestampParse(&$Lyrics3data) {
257                 $lyricsarray = explode("\r\n", $Lyrics3data['raw']['LYR']);
258                 foreach ($lyricsarray as $key => $lyricline) {
259                         $regs = array();
260                         unset($thislinetimestamps);
261                         while (preg_match('#^(\\[[0-9]{2}:[0-9]{2}\\])#', $lyricline, $regs)) {
262                                 $thislinetimestamps[] = $this->Lyrics3Timestamp2Seconds($regs[0]);
263                                 $lyricline = str_replace($regs[0], '', $lyricline);
264                         }
265                         $notimestamplyricsarray[$key] = $lyricline;
266                         if (isset($thislinetimestamps) && is_array($thislinetimestamps)) {
267                                 sort($thislinetimestamps);
268                                 foreach ($thislinetimestamps as $timestampkey => $timestamp) {
269                                         if (isset($Lyrics3data['synchedlyrics'][$timestamp])) {
270                                                 // timestamps only have a 1-second resolution, it's possible that multiple lines
271                                                 // could have the same timestamp, if so, append
272                                                 $Lyrics3data['synchedlyrics'][$timestamp] .= "\r\n".$lyricline;
273                                         } else {
274                                                 $Lyrics3data['synchedlyrics'][$timestamp] = $lyricline;
275                                         }
276                                 }
277                         }
278                 }
279                 $Lyrics3data['unsynchedlyrics'] = implode("\r\n", $notimestamplyricsarray);
280                 if (isset($Lyrics3data['synchedlyrics']) && is_array($Lyrics3data['synchedlyrics'])) {
281                         ksort($Lyrics3data['synchedlyrics']);
282                 }
283                 return true;
284         }
285
286         public function IntString2Bool($char) {
287                 if ($char == '1') {
288                         return true;
289                 } elseif ($char == '0') {
290                         return false;
291                 }
292                 return null;
293         }
294 }