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  • Committer: Jacek Nykis
  • Date: 2015-01-05 16:17:05 UTC
  • Revision ID: jacek.nykis@canonical.com-20150105161705-w544l1h5mcg7u4w9
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wp-includes/ID3/getid3.lib.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
/////////////////////////////////////////////////////////////////
 
7
//                                                             //
 
8
// getid3.lib.php - part of getID3()                           //
 
9
// See readme.txt for more details                             //
 
10
//                                                            ///
 
11
/////////////////////////////////////////////////////////////////
 
12
 
 
13
 
 
14
class getid3_lib
 
15
{
 
16
 
 
17
        public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
 
18
                $returnstring = '';
 
19
                for ($i = 0; $i < strlen($string); $i++) {
 
20
                        if ($hex) {
 
21
                                $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT);
 
22
                        } else {
 
23
                                $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ? $string{$i} : '¤');
 
24
                        }
 
25
                        if ($spaces) {
 
26
                                $returnstring .= ' ';
 
27
                        }
 
28
                }
 
29
                if (!empty($htmlencoding)) {
 
30
                        if ($htmlencoding === true) {
 
31
                                $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
 
32
                        }
 
33
                        $returnstring = htmlentities($returnstring, ENT_QUOTES, $htmlencoding);
 
34
                }
 
35
                return $returnstring;
 
36
        }
 
37
 
 
38
        public static function trunc($floatnumber) {
 
39
                // truncates a floating-point number at the decimal point
 
40
                // returns int (if possible, otherwise float)
 
41
                if ($floatnumber >= 1) {
 
42
                        $truncatednumber = floor($floatnumber);
 
43
                } elseif ($floatnumber <= -1) {
 
44
                        $truncatednumber = ceil($floatnumber);
 
45
                } else {
 
46
                        $truncatednumber = 0;
 
47
                }
 
48
                if (self::intValueSupported($truncatednumber)) {
 
49
                        $truncatednumber = (int) $truncatednumber;
 
50
                }
 
51
                return $truncatednumber;
 
52
        }
 
53
 
 
54
 
 
55
        public static function safe_inc(&$variable, $increment=1) {
 
56
                if (isset($variable)) {
 
57
                        $variable += $increment;
 
58
                } else {
 
59
                        $variable = $increment;
 
60
                }
 
61
                return true;
 
62
        }
 
63
 
 
64
        public static function CastAsInt($floatnum) {
 
65
                // convert to float if not already
 
66
                $floatnum = (float) $floatnum;
 
67
 
 
68
                // convert a float to type int, only if possible
 
69
                if (self::trunc($floatnum) == $floatnum) {
 
70
                        // it's not floating point
 
71
                        if (self::intValueSupported($floatnum)) {
 
72
                                // it's within int range
 
73
                                $floatnum = (int) $floatnum;
 
74
                        }
 
75
                }
 
76
                return $floatnum;
 
77
        }
 
78
 
 
79
        public static function intValueSupported($num) {
 
80
                // check if integers are 64-bit
 
81
                static $hasINT64 = null;
 
82
                if ($hasINT64 === null) { // 10x faster than is_null()
 
83
                        $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
 
84
                        if (!$hasINT64 && !defined('PHP_INT_MIN')) {
 
85
                                define('PHP_INT_MIN', ~PHP_INT_MAX);
 
86
                        }
 
87
                }
 
88
                // if integers are 64-bit - no other check required
 
89
                if ($hasINT64 || (($num <= PHP_INT_MAX) && ($num >= PHP_INT_MIN))) {
 
90
                        return true;
 
91
                }
 
92
                return false;
 
93
        }
 
94
 
 
95
        public static function DecimalizeFraction($fraction) {
 
96
                list($numerator, $denominator) = explode('/', $fraction);
 
97
                return $numerator / ($denominator ? $denominator : 1);
 
98
        }
 
99
 
 
100
 
 
101
        public static function DecimalBinary2Float($binarynumerator) {
 
102
                $numerator   = self::Bin2Dec($binarynumerator);
 
103
                $denominator = self::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
 
104
                return ($numerator / $denominator);
 
105
        }
 
106
 
 
107
 
 
108
        public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
 
109
                // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
 
110
                if (strpos($binarypointnumber, '.') === false) {
 
111
                        $binarypointnumber = '0.'.$binarypointnumber;
 
112
                } elseif ($binarypointnumber{0} == '.') {
 
113
                        $binarypointnumber = '0'.$binarypointnumber;
 
114
                }
 
115
                $exponent = 0;
 
116
                while (($binarypointnumber{0} != '1') || (substr($binarypointnumber, 1, 1) != '.')) {
 
117
                        if (substr($binarypointnumber, 1, 1) == '.') {
 
118
                                $exponent--;
 
119
                                $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
 
120
                        } else {
 
121
                                $pointpos = strpos($binarypointnumber, '.');
 
122
                                $exponent += ($pointpos - 1);
 
123
                                $binarypointnumber = str_replace('.', '', $binarypointnumber);
 
124
                                $binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1);
 
125
                        }
 
126
                }
 
127
                $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits + 2), $maxbits + 2, '0', STR_PAD_RIGHT);
 
128
                return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
 
129
        }
 
130
 
 
131
 
 
132
        public static function Float2BinaryDecimal($floatvalue) {
 
133
                // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
 
134
                $maxbits = 128; // to how many bits of precision should the calculations be taken?
 
135
                $intpart   = self::trunc($floatvalue);
 
136
                $floatpart = abs($floatvalue - $intpart);
 
137
                $pointbitstring = '';
 
138
                while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
 
139
                        $floatpart *= 2;
 
140
                        $pointbitstring .= (string) self::trunc($floatpart);
 
141
                        $floatpart -= self::trunc($floatpart);
 
142
                }
 
143
                $binarypointnumber = decbin($intpart).'.'.$pointbitstring;
 
144
                return $binarypointnumber;
 
145
        }
 
146
 
 
147
 
 
148
        public static function Float2String($floatvalue, $bits) {
 
149
                // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
 
150
                switch ($bits) {
 
151
                        case 32:
 
152
                                $exponentbits = 8;
 
153
                                $fractionbits = 23;
 
154
                                break;
 
155
 
 
156
                        case 64:
 
157
                                $exponentbits = 11;
 
158
                                $fractionbits = 52;
 
159
                                break;
 
160
 
 
161
                        default:
 
162
                                return false;
 
163
                                break;
 
164
                }
 
165
                if ($floatvalue >= 0) {
 
166
                        $signbit = '0';
 
167
                } else {
 
168
                        $signbit = '1';
 
169
                }
 
170
                $normalizedbinary  = self::NormalizeBinaryPoint(self::Float2BinaryDecimal($floatvalue), $fractionbits);
 
171
                $biasedexponent    = pow(2, $exponentbits - 1) - 1 + $normalizedbinary['exponent']; // (127 or 1023) +/- exponent
 
172
                $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT);
 
173
                $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT);
 
174
 
 
175
                return self::BigEndian2String(self::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits % 8, false);
 
176
        }
 
177
 
 
178
 
 
179
        public static function LittleEndian2Float($byteword) {
 
180
                return self::BigEndian2Float(strrev($byteword));
 
181
        }
 
182
 
 
183
 
 
184
        public static function BigEndian2Float($byteword) {
 
185
                // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
 
186
                // http://www.psc.edu/general/software/packages/ieee/ieee.html
 
187
                // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
 
188
 
 
189
                $bitword = self::BigEndian2Bin($byteword);
 
190
                if (!$bitword) {
 
191
                        return 0;
 
192
                }
 
193
                $signbit = $bitword{0};
 
194
 
 
195
                switch (strlen($byteword) * 8) {
 
196
                        case 32:
 
197
                                $exponentbits = 8;
 
198
                                $fractionbits = 23;
 
199
                                break;
 
200
 
 
201
                        case 64:
 
202
                                $exponentbits = 11;
 
203
                                $fractionbits = 52;
 
204
                                break;
 
205
 
 
206
                        case 80:
 
207
                                // 80-bit Apple SANE format
 
208
                                // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
 
209
                                $exponentstring = substr($bitword, 1, 15);
 
210
                                $isnormalized = intval($bitword{16});
 
211
                                $fractionstring = substr($bitword, 17, 63);
 
212
                                $exponent = pow(2, self::Bin2Dec($exponentstring) - 16383);
 
213
                                $fraction = $isnormalized + self::DecimalBinary2Float($fractionstring);
 
214
                                $floatvalue = $exponent * $fraction;
 
215
                                if ($signbit == '1') {
 
216
                                        $floatvalue *= -1;
 
217
                                }
 
218
                                return $floatvalue;
 
219
                                break;
 
220
 
 
221
                        default:
 
222
                                return false;
 
223
                                break;
 
224
                }
 
225
                $exponentstring = substr($bitword, 1, $exponentbits);
 
226
                $fractionstring = substr($bitword, $exponentbits + 1, $fractionbits);
 
227
                $exponent = self::Bin2Dec($exponentstring);
 
228
                $fraction = self::Bin2Dec($fractionstring);
 
229
 
 
230
                if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
 
231
                        // Not a Number
 
232
                        $floatvalue = false;
 
233
                } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
 
234
                        if ($signbit == '1') {
 
235
                                $floatvalue = '-infinity';
 
236
                        } else {
 
237
                                $floatvalue = '+infinity';
 
238
                        }
 
239
                } elseif (($exponent == 0) && ($fraction == 0)) {
 
240
                        if ($signbit == '1') {
 
241
                                $floatvalue = -0;
 
242
                        } else {
 
243
                                $floatvalue = 0;
 
244
                        }
 
245
                        $floatvalue = ($signbit ? 0 : -0);
 
246
                } elseif (($exponent == 0) && ($fraction != 0)) {
 
247
                        // These are 'unnormalized' values
 
248
                        $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self::DecimalBinary2Float($fractionstring);
 
249
                        if ($signbit == '1') {
 
250
                                $floatvalue *= -1;
 
251
                        }
 
252
                } elseif ($exponent != 0) {
 
253
                        $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self::DecimalBinary2Float($fractionstring));
 
254
                        if ($signbit == '1') {
 
255
                                $floatvalue *= -1;
 
256
                        }
 
257
                }
 
258
                return (float) $floatvalue;
 
259
        }
 
260
 
 
261
 
 
262
        public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
 
263
                $intvalue = 0;
 
264
                $bytewordlen = strlen($byteword);
 
265
                if ($bytewordlen == 0) {
 
266
                        return false;
 
267
                }
 
268
                for ($i = 0; $i < $bytewordlen; $i++) {
 
269
                        if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
 
270
                                //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
 
271
                                $intvalue += (ord($byteword{$i}) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
 
272
                        } else {
 
273
                                $intvalue += ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
 
274
                        }
 
275
                }
 
276
                if ($signed && !$synchsafe) {
 
277
                        // synchsafe ints are not allowed to be signed
 
278
                        if ($bytewordlen <= PHP_INT_SIZE) {
 
279
                                $signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
 
280
                                if ($intvalue & $signMaskBit) {
 
281
                                        $intvalue = 0 - ($intvalue & ($signMaskBit - 1));
 
282
                                }
 
283
                        } else {
 
284
                                throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits ('.strlen($byteword).') in self::BigEndian2Int()');
 
285
                                break;
 
286
                        }
 
287
                }
 
288
                return self::CastAsInt($intvalue);
 
289
        }
 
290
 
 
291
 
 
292
        public static function LittleEndian2Int($byteword, $signed=false) {
 
293
                return self::BigEndian2Int(strrev($byteword), false, $signed);
 
294
        }
 
295
 
 
296
 
 
297
        public static function BigEndian2Bin($byteword) {
 
298
                $binvalue = '';
 
299
                $bytewordlen = strlen($byteword);
 
300
                for ($i = 0; $i < $bytewordlen; $i++) {
 
301
                        $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT);
 
302
                }
 
303
                return $binvalue;
 
304
        }
 
305
 
 
306
 
 
307
        public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
 
308
                if ($number < 0) {
 
309
                        throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers');
 
310
                }
 
311
                $maskbyte = (($synchsafe || $signed) ? 0x7F : 0xFF);
 
312
                $intstring = '';
 
313
                if ($signed) {
 
314
                        if ($minbytes > PHP_INT_SIZE) {
 
315
                                throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE).'-bits in self::BigEndian2String()');
 
316
                        }
 
317
                        $number = $number & (0x80 << (8 * ($minbytes - 1)));
 
318
                }
 
319
                while ($number != 0) {
 
320
                        $quotient = ($number / ($maskbyte + 1));
 
321
                        $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring;
 
322
                        $number = floor($quotient);
 
323
                }
 
324
                return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT);
 
325
        }
 
326
 
 
327
 
 
328
        public static function Dec2Bin($number) {
 
329
                while ($number >= 256) {
 
330
                        $bytes[] = (($number / 256) - (floor($number / 256))) * 256;
 
331
                        $number = floor($number / 256);
 
332
                }
 
333
                $bytes[] = $number;
 
334
                $binstring = '';
 
335
                for ($i = 0; $i < count($bytes); $i++) {
 
336
                        $binstring = (($i == count($bytes) - 1) ? decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT)).$binstring;
 
337
                }
 
338
                return $binstring;
 
339
        }
 
340
 
 
341
 
 
342
        public static function Bin2Dec($binstring, $signed=false) {
 
343
                $signmult = 1;
 
344
                if ($signed) {
 
345
                        if ($binstring{0} == '1') {
 
346
                                $signmult = -1;
 
347
                        }
 
348
                        $binstring = substr($binstring, 1);
 
349
                }
 
350
                $decvalue = 0;
 
351
                for ($i = 0; $i < strlen($binstring); $i++) {
 
352
                        $decvalue += ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
 
353
                }
 
354
                return self::CastAsInt($decvalue * $signmult);
 
355
        }
 
356
 
 
357
 
 
358
        public static function Bin2String($binstring) {
 
359
                // return 'hi' for input of '0110100001101001'
 
360
                $string = '';
 
361
                $binstringreversed = strrev($binstring);
 
362
                for ($i = 0; $i < strlen($binstringreversed); $i += 8) {
 
363
                        $string = chr(self::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
 
364
                }
 
365
                return $string;
 
366
        }
 
367
 
 
368
 
 
369
        public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) {
 
370
                $intstring = '';
 
371
                while ($number > 0) {
 
372
                        if ($synchsafe) {
 
373
                                $intstring = $intstring.chr($number & 127);
 
374
                                $number >>= 7;
 
375
                        } else {
 
376
                                $intstring = $intstring.chr($number & 255);
 
377
                                $number >>= 8;
 
378
                        }
 
379
                }
 
380
                return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT);
 
381
        }
 
382
 
 
383
 
 
384
        public static function array_merge_clobber($array1, $array2) {
 
385
                // written by kcØhireability*com
 
386
                // taken from http://www.php.net/manual/en/function.array-merge-recursive.php
 
387
                if (!is_array($array1) || !is_array($array2)) {
 
388
                        return false;
 
389
                }
 
390
                $newarray = $array1;
 
391
                foreach ($array2 as $key => $val) {
 
392
                        if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
 
393
                                $newarray[$key] = self::array_merge_clobber($newarray[$key], $val);
 
394
                        } else {
 
395
                                $newarray[$key] = $val;
 
396
                        }
 
397
                }
 
398
                return $newarray;
 
399
        }
 
400
 
 
401
 
 
402
        public static function array_merge_noclobber($array1, $array2) {
 
403
                if (!is_array($array1) || !is_array($array2)) {
 
404
                        return false;
 
405
                }
 
406
                $newarray = $array1;
 
407
                foreach ($array2 as $key => $val) {
 
408
                        if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
 
409
                                $newarray[$key] = self::array_merge_noclobber($newarray[$key], $val);
 
410
                        } elseif (!isset($newarray[$key])) {
 
411
                                $newarray[$key] = $val;
 
412
                        }
 
413
                }
 
414
                return $newarray;
 
415
        }
 
416
 
 
417
 
 
418
        public static function ksort_recursive(&$theArray) {
 
419
                ksort($theArray);
 
420
                foreach ($theArray as $key => $value) {
 
421
                        if (is_array($value)) {
 
422
                                self::ksort_recursive($theArray[$key]);
 
423
                        }
 
424
                }
 
425
                return true;
 
426
        }
 
427
 
 
428
        public static function fileextension($filename, $numextensions=1) {
 
429
                if (strstr($filename, '.')) {
 
430
                        $reversedfilename = strrev($filename);
 
431
                        $offset = 0;
 
432
                        for ($i = 0; $i < $numextensions; $i++) {
 
433
                                $offset = strpos($reversedfilename, '.', $offset + 1);
 
434
                                if ($offset === false) {
 
435
                                        return '';
 
436
                                }
 
437
                        }
 
438
                        return strrev(substr($reversedfilename, 0, $offset));
 
439
                }
 
440
                return '';
 
441
        }
 
442
 
 
443
 
 
444
        public static function PlaytimeString($seconds) {
 
445
                $sign = (($seconds < 0) ? '-' : '');
 
446
                $seconds = round(abs($seconds));
 
447
                $H = (int) floor( $seconds                            / 3600);
 
448
                $M = (int) floor(($seconds - (3600 * $H)            ) /   60);
 
449
                $S = (int) round( $seconds - (3600 * $H) - (60 * $M)        );
 
450
                return $sign.($H ? $H.':' : '').($H ? str_pad($M, 2, '0', STR_PAD_LEFT) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT);
 
451
        }
 
452
 
 
453
 
 
454
        public static function DateMac2Unix($macdate) {
 
455
                // Macintosh timestamp: seconds since 00:00h January 1, 1904
 
456
                // UNIX timestamp:      seconds since 00:00h January 1, 1970
 
457
                return self::CastAsInt($macdate - 2082844800);
 
458
        }
 
459
 
 
460
 
 
461
        public static function FixedPoint8_8($rawdata) {
 
462
                return self::BigEndian2Int(substr($rawdata, 0, 1)) + (float) (self::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
 
463
        }
 
464
 
 
465
 
 
466
        public static function FixedPoint16_16($rawdata) {
 
467
                return self::BigEndian2Int(substr($rawdata, 0, 2)) + (float) (self::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
 
468
        }
 
469
 
 
470
 
 
471
        public static function FixedPoint2_30($rawdata) {
 
472
                $binarystring = self::BigEndian2Bin($rawdata);
 
473
                return self::Bin2Dec(substr($binarystring, 0, 2)) + (float) (self::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
 
474
        }
 
475
 
 
476
 
 
477
        public static function CreateDeepArray($ArrayPath, $Separator, $Value) {
 
478
                // assigns $Value to a nested array path:
 
479
                //   $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt')
 
480
                // is the same as:
 
481
                //   $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
 
482
                // or
 
483
                //   $foo['path']['to']['my'] = 'file.txt';
 
484
                $ArrayPath = ltrim($ArrayPath, $Separator);
 
485
                if (($pos = strpos($ArrayPath, $Separator)) !== false) {
 
486
                        $ReturnedArray[substr($ArrayPath, 0, $pos)] = self::CreateDeepArray(substr($ArrayPath, $pos + 1), $Separator, $Value);
 
487
                } else {
 
488
                        $ReturnedArray[$ArrayPath] = $Value;
 
489
                }
 
490
                return $ReturnedArray;
 
491
        }
 
492
 
 
493
        public static function array_max($arraydata, $returnkey=false) {
 
494
                $maxvalue = false;
 
495
                $maxkey = false;
 
496
                foreach ($arraydata as $key => $value) {
 
497
                        if (!is_array($value)) {
 
498
                                if ($value > $maxvalue) {
 
499
                                        $maxvalue = $value;
 
500
                                        $maxkey = $key;
 
501
                                }
 
502
                        }
 
503
                }
 
504
                return ($returnkey ? $maxkey : $maxvalue);
 
505
        }
 
506
 
 
507
        public static function array_min($arraydata, $returnkey=false) {
 
508
                $minvalue = false;
 
509
                $minkey = false;
 
510
                foreach ($arraydata as $key => $value) {
 
511
                        if (!is_array($value)) {
 
512
                                if ($value > $minvalue) {
 
513
                                        $minvalue = $value;
 
514
                                        $minkey = $key;
 
515
                                }
 
516
                        }
 
517
                }
 
518
                return ($returnkey ? $minkey : $minvalue);
 
519
        }
 
520
 
 
521
        public static function XML2array($XMLstring) {
 
522
                if ( function_exists( 'simplexml_load_string' ) && function_exists( 'libxml_disable_entity_loader' ) ) {
 
523
                        $loader = libxml_disable_entity_loader( true );
 
524
                        $XMLobject = simplexml_load_string( $XMLstring, 'SimpleXMLElement', LIBXML_NOENT );
 
525
                        $return = self::SimpleXMLelement2array( $XMLobject );
 
526
                        libxml_disable_entity_loader( $loader );
 
527
                        return $return;
 
528
                }
 
529
                return false;
 
530
        }
 
531
 
 
532
        public static function SimpleXMLelement2array($XMLobject) {
 
533
                if (!is_object($XMLobject) && !is_array($XMLobject)) {
 
534
                        return $XMLobject;
 
535
                }
 
536
                $XMLarray = (is_object($XMLobject) ? get_object_vars($XMLobject) : $XMLobject);
 
537
                foreach ($XMLarray as $key => $value) {
 
538
                        $XMLarray[$key] = self::SimpleXMLelement2array($value);
 
539
                }
 
540
                return $XMLarray;
 
541
        }
 
542
 
 
543
 
 
544
        // Allan Hansen <ahØartemis*dk>
 
545
        // self::md5_data() - returns md5sum for a file from startuing position to absolute end position
 
546
        public static function hash_data($file, $offset, $end, $algorithm) {
 
547
                static $tempdir = '';
 
548
                if (!self::intValueSupported($end)) {
 
549
                        return false;
 
550
                }
 
551
                switch ($algorithm) {
 
552
                        case 'md5':
 
553
                                $hash_function = 'md5_file';
 
554
                                $unix_call     = 'md5sum';
 
555
                                $windows_call  = 'md5sum.exe';
 
556
                                $hash_length   = 32;
 
557
                                break;
 
558
 
 
559
                        case 'sha1':
 
560
                                $hash_function = 'sha1_file';
 
561
                                $unix_call     = 'sha1sum';
 
562
                                $windows_call  = 'sha1sum.exe';
 
563
                                $hash_length   = 40;
 
564
                                break;
 
565
 
 
566
                        default:
 
567
                                throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()');
 
568
                                break;
 
569
                }
 
570
                $size = $end - $offset;
 
571
                while (true) {
 
572
                        if (GETID3_OS_ISWINDOWS) {
 
573
 
 
574
                                // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
 
575
                                // Fall back to create-temp-file method:
 
576
                                if ($algorithm == 'sha1') {
 
577
                                        break;
 
578
                                }
 
579
 
 
580
                                $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
 
581
                                foreach ($RequiredFiles as $required_file) {
 
582
                                        if (!is_readable(GETID3_HELPERAPPSDIR.$required_file)) {
 
583
                                                // helper apps not available - fall back to old method
 
584
                                                break 2;
 
585
                                        }
 
586
                                }
 
587
                                $commandline  = GETID3_HELPERAPPSDIR.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR, $file)).' | ';
 
588
                                $commandline .= GETID3_HELPERAPPSDIR.'tail.exe -c '.$size.' | ';
 
589
                                $commandline .= GETID3_HELPERAPPSDIR.$windows_call;
 
590
 
 
591
                        } else {
 
592
 
 
593
                                $commandline  = 'head -c'.$end.' '.escapeshellarg($file).' | ';
 
594
                                $commandline .= 'tail -c'.$size.' | ';
 
595
                                $commandline .= $unix_call;
 
596
 
 
597
                        }
 
598
                        if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
 
599
                                //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
 
600
                                break;
 
601
                        }
 
602
                        return substr(`$commandline`, 0, $hash_length);
 
603
                }
 
604
 
 
605
                if (empty($tempdir)) {
 
606
                        // yes this is ugly, feel free to suggest a better way
 
607
                        require_once(dirname(__FILE__).'/getid3.php');
 
608
                        $getid3_temp = new getID3();
 
609
                        $tempdir = $getid3_temp->tempdir;
 
610
                        unset($getid3_temp);
 
611
                }
 
612
                // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
 
613
                if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
 
614
                        // can't find anywhere to create a temp file, just fail
 
615
                        return false;
 
616
                }
 
617
 
 
618
                // Init
 
619
                $result = false;
 
620
 
 
621
                // copy parts of file
 
622
                try {
 
623
                        self::CopyFileParts($file, $data_filename, $offset, $end - $offset);
 
624
                        $result = $hash_function($data_filename);
 
625
                } catch (Exception $e) {
 
626
                        throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage());
 
627
                }
 
628
                unlink($data_filename);
 
629
                return $result;
 
630
        }
 
631
 
 
632
        public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) {
 
633
                if (!self::intValueSupported($offset + $length)) {
 
634
                        throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX / 1073741824).'GB limit');
 
635
                }
 
636
                if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) {
 
637
                        if (($fp_dest = fopen($filename_dest, 'wb'))) {
 
638
                                if (fseek($fp_src, $offset, SEEK_SET) == 0) {
 
639
                                        $byteslefttowrite = $length;
 
640
                                        while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3::FREAD_BUFFER_SIZE)))) {
 
641
                                                $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
 
642
                                                $byteslefttowrite -= $byteswritten;
 
643
                                        }
 
644
                                        return true;
 
645
                                } else {
 
646
                                        throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source);
 
647
                                }
 
648
                                fclose($fp_dest);
 
649
                        } else {
 
650
                                throw new Exception('failed to create file for writing '.$filename_dest);
 
651
                        }
 
652
                        fclose($fp_src);
 
653
                } else {
 
654
                        throw new Exception('failed to open file for reading '.$filename_source);
 
655
                }
 
656
                return false;
 
657
        }
 
658
 
 
659
        public static function iconv_fallback_int_utf8($charval) {
 
660
                if ($charval < 128) {
 
661
                        // 0bbbbbbb
 
662
                        $newcharstring = chr($charval);
 
663
                } elseif ($charval < 2048) {
 
664
                        // 110bbbbb 10bbbbbb
 
665
                        $newcharstring  = chr(($charval >>   6) | 0xC0);
 
666
                        $newcharstring .= chr(($charval & 0x3F) | 0x80);
 
667
                } elseif ($charval < 65536) {
 
668
                        // 1110bbbb 10bbbbbb 10bbbbbb
 
669
                        $newcharstring  = chr(($charval >>  12) | 0xE0);
 
670
                        $newcharstring .= chr(($charval >>   6) | 0xC0);
 
671
                        $newcharstring .= chr(($charval & 0x3F) | 0x80);
 
672
                } else {
 
673
                        // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
 
674
                        $newcharstring  = chr(($charval >>  18) | 0xF0);
 
675
                        $newcharstring .= chr(($charval >>  12) | 0xC0);
 
676
                        $newcharstring .= chr(($charval >>   6) | 0xC0);
 
677
                        $newcharstring .= chr(($charval & 0x3F) | 0x80);
 
678
                }
 
679
                return $newcharstring;
 
680
        }
 
681
 
 
682
        // ISO-8859-1 => UTF-8
 
683
        public static function iconv_fallback_iso88591_utf8($string, $bom=false) {
 
684
                if (function_exists('utf8_encode')) {
 
685
                        return utf8_encode($string);
 
686
                }
 
687
                // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
 
688
                $newcharstring = '';
 
689
                if ($bom) {
 
690
                        $newcharstring .= "\xEF\xBB\xBF";
 
691
                }
 
692
                for ($i = 0; $i < strlen($string); $i++) {
 
693
                        $charval = ord($string{$i});
 
694
                        $newcharstring .= self::iconv_fallback_int_utf8($charval);
 
695
                }
 
696
                return $newcharstring;
 
697
        }
 
698
 
 
699
        // ISO-8859-1 => UTF-16BE
 
700
        public static function iconv_fallback_iso88591_utf16be($string, $bom=false) {
 
701
                $newcharstring = '';
 
702
                if ($bom) {
 
703
                        $newcharstring .= "\xFE\xFF";
 
704
                }
 
705
                for ($i = 0; $i < strlen($string); $i++) {
 
706
                        $newcharstring .= "\x00".$string{$i};
 
707
                }
 
708
                return $newcharstring;
 
709
        }
 
710
 
 
711
        // ISO-8859-1 => UTF-16LE
 
712
        public static function iconv_fallback_iso88591_utf16le($string, $bom=false) {
 
713
                $newcharstring = '';
 
714
                if ($bom) {
 
715
                        $newcharstring .= "\xFF\xFE";
 
716
                }
 
717
                for ($i = 0; $i < strlen($string); $i++) {
 
718
                        $newcharstring .= $string{$i}."\x00";
 
719
                }
 
720
                return $newcharstring;
 
721
        }
 
722
 
 
723
        // ISO-8859-1 => UTF-16LE (BOM)
 
724
        public static function iconv_fallback_iso88591_utf16($string) {
 
725
                return self::iconv_fallback_iso88591_utf16le($string, true);
 
726
        }
 
727
 
 
728
        // UTF-8 => ISO-8859-1
 
729
        public static function iconv_fallback_utf8_iso88591($string) {
 
730
                if (function_exists('utf8_decode')) {
 
731
                        return utf8_decode($string);
 
732
                }
 
733
                // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
 
734
                $newcharstring = '';
 
735
                $offset = 0;
 
736
                $stringlength = strlen($string);
 
737
                while ($offset < $stringlength) {
 
738
                        if ((ord($string{$offset}) | 0x07) == 0xF7) {
 
739
                                // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
 
740
                                $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
 
741
                                                   ((ord($string{($offset + 1)}) & 0x3F) << 12) &
 
742
                                                   ((ord($string{($offset + 2)}) & 0x3F) <<  6) &
 
743
                                                        (ord($string{($offset + 3)}) & 0x3F);
 
744
                                $offset += 4;
 
745
                        } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
 
746
                                // 1110bbbb 10bbbbbb 10bbbbbb
 
747
                                $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
 
748
                                                   ((ord($string{($offset + 1)}) & 0x3F) <<  6) &
 
749
                                                        (ord($string{($offset + 2)}) & 0x3F);
 
750
                                $offset += 3;
 
751
                        } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
 
752
                                // 110bbbbb 10bbbbbb
 
753
                                $charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &
 
754
                                                        (ord($string{($offset + 1)}) & 0x3F);
 
755
                                $offset += 2;
 
756
                        } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
 
757
                                // 0bbbbbbb
 
758
                                $charval = ord($string{$offset});
 
759
                                $offset += 1;
 
760
                        } else {
 
761
                                // error? throw some kind of warning here?
 
762
                                $charval = false;
 
763
                                $offset += 1;
 
764
                        }
 
765
                        if ($charval !== false) {
 
766
                                $newcharstring .= (($charval < 256) ? chr($charval) : '?');
 
767
                        }
 
768
                }
 
769
                return $newcharstring;
 
770
        }
 
771
 
 
772
        // UTF-8 => UTF-16BE
 
773
        public static function iconv_fallback_utf8_utf16be($string, $bom=false) {
 
774
                $newcharstring = '';
 
775
                if ($bom) {
 
776
                        $newcharstring .= "\xFE\xFF";
 
777
                }
 
778
                $offset = 0;
 
779
                $stringlength = strlen($string);
 
780
                while ($offset < $stringlength) {
 
781
                        if ((ord($string{$offset}) | 0x07) == 0xF7) {
 
782
                                // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
 
783
                                $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
 
784
                                                   ((ord($string{($offset + 1)}) & 0x3F) << 12) &
 
785
                                                   ((ord($string{($offset + 2)}) & 0x3F) <<  6) &
 
786
                                                        (ord($string{($offset + 3)}) & 0x3F);
 
787
                                $offset += 4;
 
788
                        } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
 
789
                                // 1110bbbb 10bbbbbb 10bbbbbb
 
790
                                $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
 
791
                                                   ((ord($string{($offset + 1)}) & 0x3F) <<  6) &
 
792
                                                        (ord($string{($offset + 2)}) & 0x3F);
 
793
                                $offset += 3;
 
794
                        } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
 
795
                                // 110bbbbb 10bbbbbb
 
796
                                $charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &
 
797
                                                        (ord($string{($offset + 1)}) & 0x3F);
 
798
                                $offset += 2;
 
799
                        } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
 
800
                                // 0bbbbbbb
 
801
                                $charval = ord($string{$offset});
 
802
                                $offset += 1;
 
803
                        } else {
 
804
                                // error? throw some kind of warning here?
 
805
                                $charval = false;
 
806
                                $offset += 1;
 
807
                        }
 
808
                        if ($charval !== false) {
 
809
                                $newcharstring .= (($charval < 65536) ? self::BigEndian2String($charval, 2) : "\x00".'?');
 
810
                        }
 
811
                }
 
812
                return $newcharstring;
 
813
        }
 
814
 
 
815
        // UTF-8 => UTF-16LE
 
816
        public static function iconv_fallback_utf8_utf16le($string, $bom=false) {
 
817
                $newcharstring = '';
 
818
                if ($bom) {
 
819
                        $newcharstring .= "\xFF\xFE";
 
820
                }
 
821
                $offset = 0;
 
822
                $stringlength = strlen($string);
 
823
                while ($offset < $stringlength) {
 
824
                        if ((ord($string{$offset}) | 0x07) == 0xF7) {
 
825
                                // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
 
826
                                $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &
 
827
                                                   ((ord($string{($offset + 1)}) & 0x3F) << 12) &
 
828
                                                   ((ord($string{($offset + 2)}) & 0x3F) <<  6) &
 
829
                                                        (ord($string{($offset + 3)}) & 0x3F);
 
830
                                $offset += 4;
 
831
                        } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {
 
832
                                // 1110bbbb 10bbbbbb 10bbbbbb
 
833
                                $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &
 
834
                                                   ((ord($string{($offset + 1)}) & 0x3F) <<  6) &
 
835
                                                        (ord($string{($offset + 2)}) & 0x3F);
 
836
                                $offset += 3;
 
837
                        } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {
 
838
                                // 110bbbbb 10bbbbbb
 
839
                                $charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &
 
840
                                                        (ord($string{($offset + 1)}) & 0x3F);
 
841
                                $offset += 2;
 
842
                        } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {
 
843
                                // 0bbbbbbb
 
844
                                $charval = ord($string{$offset});
 
845
                                $offset += 1;
 
846
                        } else {
 
847
                                // error? maybe throw some warning here?
 
848
                                $charval = false;
 
849
                                $offset += 1;
 
850
                        }
 
851
                        if ($charval !== false) {
 
852
                                $newcharstring .= (($charval < 65536) ? self::LittleEndian2String($charval, 2) : '?'."\x00");
 
853
                        }
 
854
                }
 
855
                return $newcharstring;
 
856
        }
 
857
 
 
858
        // UTF-8 => UTF-16LE (BOM)
 
859
        public static function iconv_fallback_utf8_utf16($string) {
 
860
                return self::iconv_fallback_utf8_utf16le($string, true);
 
861
        }
 
862
 
 
863
        // UTF-16BE => UTF-8
 
864
        public static function iconv_fallback_utf16be_utf8($string) {
 
865
                if (substr($string, 0, 2) == "\xFE\xFF") {
 
866
                        // strip BOM
 
867
                        $string = substr($string, 2);
 
868
                }
 
869
                $newcharstring = '';
 
870
                for ($i = 0; $i < strlen($string); $i += 2) {
 
871
                        $charval = self::BigEndian2Int(substr($string, $i, 2));
 
872
                        $newcharstring .= self::iconv_fallback_int_utf8($charval);
 
873
                }
 
874
                return $newcharstring;
 
875
        }
 
876
 
 
877
        // UTF-16LE => UTF-8
 
878
        public static function iconv_fallback_utf16le_utf8($string) {
 
879
                if (substr($string, 0, 2) == "\xFF\xFE") {
 
880
                        // strip BOM
 
881
                        $string = substr($string, 2);
 
882
                }
 
883
                $newcharstring = '';
 
884
                for ($i = 0; $i < strlen($string); $i += 2) {
 
885
                        $charval = self::LittleEndian2Int(substr($string, $i, 2));
 
886
                        $newcharstring .= self::iconv_fallback_int_utf8($charval);
 
887
                }
 
888
                return $newcharstring;
 
889
        }
 
890
 
 
891
        // UTF-16BE => ISO-8859-1
 
892
        public static function iconv_fallback_utf16be_iso88591($string) {
 
893
                if (substr($string, 0, 2) == "\xFE\xFF") {
 
894
                        // strip BOM
 
895
                        $string = substr($string, 2);
 
896
                }
 
897
                $newcharstring = '';
 
898
                for ($i = 0; $i < strlen($string); $i += 2) {
 
899
                        $charval = self::BigEndian2Int(substr($string, $i, 2));
 
900
                        $newcharstring .= (($charval < 256) ? chr($charval) : '?');
 
901
                }
 
902
                return $newcharstring;
 
903
        }
 
904
 
 
905
        // UTF-16LE => ISO-8859-1
 
906
        public static function iconv_fallback_utf16le_iso88591($string) {
 
907
                if (substr($string, 0, 2) == "\xFF\xFE") {
 
908
                        // strip BOM
 
909
                        $string = substr($string, 2);
 
910
                }
 
911
                $newcharstring = '';
 
912
                for ($i = 0; $i < strlen($string); $i += 2) {
 
913
                        $charval = self::LittleEndian2Int(substr($string, $i, 2));
 
914
                        $newcharstring .= (($charval < 256) ? chr($charval) : '?');
 
915
                }
 
916
                return $newcharstring;
 
917
        }
 
918
 
 
919
        // UTF-16 (BOM) => ISO-8859-1
 
920
        public static function iconv_fallback_utf16_iso88591($string) {
 
921
                $bom = substr($string, 0, 2);
 
922
                if ($bom == "\xFE\xFF") {
 
923
                        return self::iconv_fallback_utf16be_iso88591(substr($string, 2));
 
924
                } elseif ($bom == "\xFF\xFE") {
 
925
                        return self::iconv_fallback_utf16le_iso88591(substr($string, 2));
 
926
                }
 
927
                return $string;
 
928
        }
 
929
 
 
930
        // UTF-16 (BOM) => UTF-8
 
931
        public static function iconv_fallback_utf16_utf8($string) {
 
932
                $bom = substr($string, 0, 2);
 
933
                if ($bom == "\xFE\xFF") {
 
934
                        return self::iconv_fallback_utf16be_utf8(substr($string, 2));
 
935
                } elseif ($bom == "\xFF\xFE") {
 
936
                        return self::iconv_fallback_utf16le_utf8(substr($string, 2));
 
937
                }
 
938
                return $string;
 
939
        }
 
940
 
 
941
        public static function iconv_fallback($in_charset, $out_charset, $string) {
 
942
 
 
943
                if ($in_charset == $out_charset) {
 
944
                        return $string;
 
945
                }
 
946
 
 
947
                // iconv() availble
 
948
                if (function_exists('iconv')) {
 
949
                        if ($converted_string = @iconv($in_charset, $out_charset.'//TRANSLIT', $string)) {
 
950
                                switch ($out_charset) {
 
951
                                        case 'ISO-8859-1':
 
952
                                                $converted_string = rtrim($converted_string, "\x00");
 
953
                                                break;
 
954
                                }
 
955
                                return $converted_string;
 
956
                        }
 
957
 
 
958
                        // iconv() may sometimes fail with "illegal character in input string" error message
 
959
                        // and return an empty string, but returning the unconverted string is more useful
 
960
                        return $string;
 
961
                }
 
962
 
 
963
 
 
964
                // iconv() not available
 
965
                static $ConversionFunctionList = array();
 
966
                if (empty($ConversionFunctionList)) {
 
967
                        $ConversionFunctionList['ISO-8859-1']['UTF-8']    = 'iconv_fallback_iso88591_utf8';
 
968
                        $ConversionFunctionList['ISO-8859-1']['UTF-16']   = 'iconv_fallback_iso88591_utf16';
 
969
                        $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
 
970
                        $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
 
971
                        $ConversionFunctionList['UTF-8']['ISO-8859-1']    = 'iconv_fallback_utf8_iso88591';
 
972
                        $ConversionFunctionList['UTF-8']['UTF-16']        = 'iconv_fallback_utf8_utf16';
 
973
                        $ConversionFunctionList['UTF-8']['UTF-16BE']      = 'iconv_fallback_utf8_utf16be';
 
974
                        $ConversionFunctionList['UTF-8']['UTF-16LE']      = 'iconv_fallback_utf8_utf16le';
 
975
                        $ConversionFunctionList['UTF-16']['ISO-8859-1']   = 'iconv_fallback_utf16_iso88591';
 
976
                        $ConversionFunctionList['UTF-16']['UTF-8']        = 'iconv_fallback_utf16_utf8';
 
977
                        $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
 
978
                        $ConversionFunctionList['UTF-16LE']['UTF-8']      = 'iconv_fallback_utf16le_utf8';
 
979
                        $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
 
980
                        $ConversionFunctionList['UTF-16BE']['UTF-8']      = 'iconv_fallback_utf16be_utf8';
 
981
                }
 
982
                if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
 
983
                        $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
 
984
                        return self::$ConversionFunction($string);
 
985
                }
 
986
                throw new Exception('PHP does not have iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
 
987
        }
 
988
 
 
989
 
 
990
        public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
 
991
                $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
 
992
                $HTMLstring = '';
 
993
 
 
994
                switch ($charset) {
 
995
                        case '1251':
 
996
                        case '1252':
 
997
                        case '866':
 
998
                        case '932':
 
999
                        case '936':
 
1000
                        case '950':
 
1001
                        case 'BIG5':
 
1002
                        case 'BIG5-HKSCS':
 
1003
                        case 'cp1251':
 
1004
                        case 'cp1252':
 
1005
                        case 'cp866':
 
1006
                        case 'EUC-JP':
 
1007
                        case 'EUCJP':
 
1008
                        case 'GB2312':
 
1009
                        case 'ibm866':
 
1010
                        case 'ISO-8859-1':
 
1011
                        case 'ISO-8859-15':
 
1012
                        case 'ISO8859-1':
 
1013
                        case 'ISO8859-15':
 
1014
                        case 'KOI8-R':
 
1015
                        case 'koi8-ru':
 
1016
                        case 'koi8r':
 
1017
                        case 'Shift_JIS':
 
1018
                        case 'SJIS':
 
1019
                        case 'win-1251':
 
1020
                        case 'Windows-1251':
 
1021
                        case 'Windows-1252':
 
1022
                                $HTMLstring = htmlentities($string, ENT_COMPAT, $charset);
 
1023
                                break;
 
1024
 
 
1025
                        case 'UTF-8':
 
1026
                                $strlen = strlen($string);
 
1027
                                for ($i = 0; $i < $strlen; $i++) {
 
1028
                                        $char_ord_val = ord($string{$i});
 
1029
                                        $charval = 0;
 
1030
                                        if ($char_ord_val < 0x80) {
 
1031
                                                $charval = $char_ord_val;
 
1032
                                        } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F  &&  $i+3 < $strlen) {
 
1033
                                                $charval  = (($char_ord_val & 0x07) << 18);
 
1034
                                                $charval += ((ord($string{++$i}) & 0x3F) << 12);
 
1035
                                                $charval += ((ord($string{++$i}) & 0x3F) << 6);
 
1036
                                                $charval +=  (ord($string{++$i}) & 0x3F);
 
1037
                                        } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07  &&  $i+2 < $strlen) {
 
1038
                                                $charval  = (($char_ord_val & 0x0F) << 12);
 
1039
                                                $charval += ((ord($string{++$i}) & 0x3F) << 6);
 
1040
                                                $charval +=  (ord($string{++$i}) & 0x3F);
 
1041
                                        } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03  &&  $i+1 < $strlen) {
 
1042
                                                $charval  = (($char_ord_val & 0x1F) << 6);
 
1043
                                                $charval += (ord($string{++$i}) & 0x3F);
 
1044
                                        }
 
1045
                                        if (($charval >= 32) && ($charval <= 127)) {
 
1046
                                                $HTMLstring .= htmlentities(chr($charval));
 
1047
                                        } else {
 
1048
                                                $HTMLstring .= '&#'.$charval.';';
 
1049
                                        }
 
1050
                                }
 
1051
                                break;
 
1052
 
 
1053
                        case 'UTF-16LE':
 
1054
                                for ($i = 0; $i < strlen($string); $i += 2) {
 
1055
                                        $charval = self::LittleEndian2Int(substr($string, $i, 2));
 
1056
                                        if (($charval >= 32) && ($charval <= 127)) {
 
1057
                                                $HTMLstring .= chr($charval);
 
1058
                                        } else {
 
1059
                                                $HTMLstring .= '&#'.$charval.';';
 
1060
                                        }
 
1061
                                }
 
1062
                                break;
 
1063
 
 
1064
                        case 'UTF-16BE':
 
1065
                                for ($i = 0; $i < strlen($string); $i += 2) {
 
1066
                                        $charval = self::BigEndian2Int(substr($string, $i, 2));
 
1067
                                        if (($charval >= 32) && ($charval <= 127)) {
 
1068
                                                $HTMLstring .= chr($charval);
 
1069
                                        } else {
 
1070
                                                $HTMLstring .= '&#'.$charval.';';
 
1071
                                        }
 
1072
                                }
 
1073
                                break;
 
1074
 
 
1075
                        default:
 
1076
                                $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()';
 
1077
                                break;
 
1078
                }
 
1079
                return $HTMLstring;
 
1080
        }
 
1081
 
 
1082
 
 
1083
 
 
1084
        public static function RGADnameLookup($namecode) {
 
1085
                static $RGADname = array();
 
1086
                if (empty($RGADname)) {
 
1087
                        $RGADname[0] = 'not set';
 
1088
                        $RGADname[1] = 'Track Gain Adjustment';
 
1089
                        $RGADname[2] = 'Album Gain Adjustment';
 
1090
                }
 
1091
 
 
1092
                return (isset($RGADname[$namecode]) ? $RGADname[$namecode] : '');
 
1093
        }
 
1094
 
 
1095
 
 
1096
        public static function RGADoriginatorLookup($originatorcode) {
 
1097
                static $RGADoriginator = array();
 
1098
                if (empty($RGADoriginator)) {
 
1099
                        $RGADoriginator[0] = 'unspecified';
 
1100
                        $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
 
1101
                        $RGADoriginator[2] = 'set by user';
 
1102
                        $RGADoriginator[3] = 'determined automatically';
 
1103
                }
 
1104
 
 
1105
                return (isset($RGADoriginator[$originatorcode]) ? $RGADoriginator[$originatorcode] : '');
 
1106
        }
 
1107
 
 
1108
 
 
1109
        public static function RGADadjustmentLookup($rawadjustment, $signbit) {
 
1110
                $adjustment = $rawadjustment / 10;
 
1111
                if ($signbit == 1) {
 
1112
                        $adjustment *= -1;
 
1113
                }
 
1114
                return (float) $adjustment;
 
1115
        }
 
1116
 
 
1117
 
 
1118
        public static function RGADgainString($namecode, $originatorcode, $replaygain) {
 
1119
                if ($replaygain < 0) {
 
1120
                        $signbit = '1';
 
1121
                } else {
 
1122
                        $signbit = '0';
 
1123
                }
 
1124
                $storedreplaygain = intval(round($replaygain * 10));
 
1125
                $gainstring  = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT);
 
1126
                $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT);
 
1127
                $gainstring .= $signbit;
 
1128
                $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT);
 
1129
 
 
1130
                return $gainstring;
 
1131
        }
 
1132
 
 
1133
        public static function RGADamplitude2dB($amplitude) {
 
1134
                return 20 * log10($amplitude);
 
1135
        }
 
1136
 
 
1137
 
 
1138
        public static function GetDataImageSize($imgData, &$imageinfo=array()) {
 
1139
                static $tempdir = '';
 
1140
                if (empty($tempdir)) {
 
1141
                        // yes this is ugly, feel free to suggest a better way
 
1142
                        require_once(dirname(__FILE__).'/getid3.php');
 
1143
                        $getid3_temp = new getID3();
 
1144
                        $tempdir = $getid3_temp->tempdir;
 
1145
                        unset($getid3_temp);
 
1146
                }
 
1147
                $GetDataImageSize = false;
 
1148
                if ($tempfilename = tempnam($tempdir, 'gI3')) {
 
1149
                        if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
 
1150
                                fwrite($tmp, $imgData);
 
1151
                                fclose($tmp);
 
1152
                                $GetDataImageSize = @getimagesize($tempfilename, $imageinfo);
 
1153
                        }
 
1154
                        unlink($tempfilename);
 
1155
                }
 
1156
                return $GetDataImageSize;
 
1157
        }
 
1158
 
 
1159
        public static function ImageExtFromMime($mime_type) {
 
1160
                // temporary way, works OK for now, but should be reworked in the future
 
1161
                return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
 
1162
        }
 
1163
 
 
1164
        public static function ImageTypesLookup($imagetypeid) {
 
1165
                static $ImageTypesLookup = array();
 
1166
                if (empty($ImageTypesLookup)) {
 
1167
                        $ImageTypesLookup[1]  = 'gif';
 
1168
                        $ImageTypesLookup[2]  = 'jpeg';
 
1169
                        $ImageTypesLookup[3]  = 'png';
 
1170
                        $ImageTypesLookup[4]  = 'swf';
 
1171
                        $ImageTypesLookup[5]  = 'psd';
 
1172
                        $ImageTypesLookup[6]  = 'bmp';
 
1173
                        $ImageTypesLookup[7]  = 'tiff (little-endian)';
 
1174
                        $ImageTypesLookup[8]  = 'tiff (big-endian)';
 
1175
                        $ImageTypesLookup[9]  = 'jpc';
 
1176
                        $ImageTypesLookup[10] = 'jp2';
 
1177
                        $ImageTypesLookup[11] = 'jpx';
 
1178
                        $ImageTypesLookup[12] = 'jb2';
 
1179
                        $ImageTypesLookup[13] = 'swc';
 
1180
                        $ImageTypesLookup[14] = 'iff';
 
1181
                }
 
1182
                return (isset($ImageTypesLookup[$imagetypeid]) ? $ImageTypesLookup[$imagetypeid] : '');
 
1183
        }
 
1184
 
 
1185
        public static function CopyTagsToComments(&$ThisFileInfo) {
 
1186
 
 
1187
                // Copy all entries from ['tags'] into common ['comments']
 
1188
                if (!empty($ThisFileInfo['tags'])) {
 
1189
                        foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
 
1190
                                foreach ($tagarray as $tagname => $tagdata) {
 
1191
                                        foreach ($tagdata as $key => $value) {
 
1192
                                                if (!empty($value)) {
 
1193
                                                        if (empty($ThisFileInfo['comments'][$tagname])) {
 
1194
 
 
1195
                                                                // fall through and append value
 
1196
 
 
1197
                                                        } elseif ($tagtype == 'id3v1') {
 
1198
 
 
1199
                                                                $newvaluelength = strlen(trim($value));
 
1200
                                                                foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
 
1201
                                                                        $oldvaluelength = strlen(trim($existingvalue));
 
1202
                                                                        if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) {
 
1203
                                                                                // new value is identical but shorter-than (or equal-length to) one already in comments - skip
 
1204
                                                                                break 2;
 
1205
                                                                        }
 
1206
                                                                }
 
1207
 
 
1208
                                                        } elseif (!is_array($value)) {
 
1209
 
 
1210
                                                                $newvaluelength = strlen(trim($value));
 
1211
                                                                foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
 
1212
                                                                        $oldvaluelength = strlen(trim($existingvalue));
 
1213
                                                                        if (($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
 
1214
                                                                                $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
 
1215
                                                                                break 2;
 
1216
                                                                        }
 
1217
                                                                }
 
1218
 
 
1219
                                                        }
 
1220
                                                        if (is_array($value) || empty($ThisFileInfo['comments'][$tagname]) || !in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
 
1221
                                                                $value = (is_string($value) ? trim($value) : $value);
 
1222
                                                                $ThisFileInfo['comments'][$tagname][] = $value;
 
1223
                                                        }
 
1224
                                                }
 
1225
                                        }
 
1226
                                }
 
1227
                        }
 
1228
 
 
1229
                        // Copy to ['comments_html']
 
1230
                        foreach ($ThisFileInfo['comments'] as $field => $values) {
 
1231
                                if ($field == 'picture') {
 
1232
                                        // pictures can take up a lot of space, and we don't need multiple copies of them
 
1233
                                        // let there be a single copy in [comments][picture], and not elsewhere
 
1234
                                        continue;
 
1235
                                }
 
1236
                                foreach ($values as $index => $value) {
 
1237
                                        if (is_array($value)) {
 
1238
                                                $ThisFileInfo['comments_html'][$field][$index] = $value;
 
1239
                                        } else {
 
1240
                                                $ThisFileInfo['comments_html'][$field][$index] = str_replace('&#0;', '', self::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
 
1241
                                        }
 
1242
                                }
 
1243
                        }
 
1244
                }
 
1245
                return true;
 
1246
        }
 
1247
 
 
1248
 
 
1249
        public static function EmbeddedLookup($key, $begin, $end, $file, $name) {
 
1250
 
 
1251
                // Cached
 
1252
                static $cache;
 
1253
                if (isset($cache[$file][$name])) {
 
1254
                        return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
 
1255
                }
 
1256
 
 
1257
                // Init
 
1258
                $keylength  = strlen($key);
 
1259
                $line_count = $end - $begin - 7;
 
1260
 
 
1261
                // Open php file
 
1262
                $fp = fopen($file, 'r');
 
1263
 
 
1264
                // Discard $begin lines
 
1265
                for ($i = 0; $i < ($begin + 3); $i++) {
 
1266
                        fgets($fp, 1024);
 
1267
                }
 
1268
 
 
1269
                // Loop thru line
 
1270
                while (0 < $line_count--) {
 
1271
 
 
1272
                        // Read line
 
1273
                        $line = ltrim(fgets($fp, 1024), "\t ");
 
1274
 
 
1275
                        // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
 
1276
                        //$keycheck = substr($line, 0, $keylength);
 
1277
                        //if ($key == $keycheck)  {
 
1278
                        //      $cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
 
1279
                        //      break;
 
1280
                        //}
 
1281
 
 
1282
                        // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
 
1283
                        //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
 
1284
                        $explodedLine = explode("\t", $line, 2);
 
1285
                        $ThisKey   = (isset($explodedLine[0]) ? $explodedLine[0] : '');
 
1286
                        $ThisValue = (isset($explodedLine[1]) ? $explodedLine[1] : '');
 
1287
                        $cache[$file][$name][$ThisKey] = trim($ThisValue);
 
1288
                }
 
1289
 
 
1290
                // Close and return
 
1291
                fclose($fp);
 
1292
                return (isset($cache[$file][$name][$key]) ? $cache[$file][$name][$key] : '');
 
1293
        }
 
1294
 
 
1295
        public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {
 
1296
                global $GETID3_ERRORARRAY;
 
1297
 
 
1298
                if (file_exists($filename)) {
 
1299
                        if (include_once($filename)) {
 
1300
                                return true;
 
1301
                        } else {
 
1302
                                $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';
 
1303
                        }
 
1304
                } else {
 
1305
                        $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';
 
1306
                }
 
1307
                if ($DieOnFailure) {
 
1308
                        throw new Exception($diemessage);
 
1309
                } else {
 
1310
                        $GETID3_ERRORARRAY[] = $diemessage;
 
1311
                }
 
1312
                return false;
 
1313
        }
 
1314
 
 
1315
        public static function trimNullByte($string) {
 
1316
                return trim($string, "\x00");
 
1317
        }
 
1318
 
 
1319
        public static function getFileSizeSyscall($path) {
 
1320
                $filesize = false;
 
1321
 
 
1322
                if (GETID3_OS_ISWINDOWS) {
 
1323
                        if (class_exists('COM')) { // From PHP 5.3.15 and 5.4.5, COM and DOTNET is no longer built into the php core.you have to add COM support in php.ini:
 
1324
                                $filesystem = new COM('Scripting.FileSystemObject');
 
1325
                                $file = $filesystem->GetFile($path);
 
1326
                                $filesize = $file->Size();
 
1327
                                unset($filesystem, $file);
 
1328
                        } else {
 
1329
                                $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI';
 
1330
                        }
 
1331
                } else {
 
1332
                        $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\'';
 
1333
                }
 
1334
                if (isset($commandline)) {
 
1335
                        $output = trim(`$commandline`);
 
1336
                        if (ctype_digit($output)) {
 
1337
                                $filesize = (float) $output;
 
1338
                        }
 
1339
                }
 
1340
                return $filesize;
 
1341
        }
 
1342
}
 
 
b'\\ No newline at end of file'