1<?php
2
3/*
4 * This file is part of the Symfony package.
5 *
6 * (c) Fabien Potencier <fabien@symfony.com>
7 *
8 * For the full copyright and license information, please view the LICENSE
9 * file that was distributed with this source code.
10 */
11
12namespace Symfony\Polyfill\Mbstring;
13
14/**
15 * Partial mbstring implementation in PHP, iconv based, UTF-8 centric.
16 *
17 * Implemented:
18 * - mb_chr                  - Returns a specific character from its Unicode code point
19 * - mb_convert_encoding     - Convert character encoding
20 * - mb_convert_variables    - Convert character code in variable(s)
21 * - mb_decode_mimeheader    - Decode string in MIME header field
22 * - mb_encode_mimeheader    - Encode string for MIME header XXX NATIVE IMPLEMENTATION IS REALLY BUGGED
23 * - mb_decode_numericentity - Decode HTML numeric string reference to character
24 * - mb_encode_numericentity - Encode character to HTML numeric string reference
25 * - mb_convert_case         - Perform case folding on a string
26 * - mb_detect_encoding      - Detect character encoding
27 * - mb_get_info             - Get internal settings of mbstring
28 * - mb_http_input           - Detect HTTP input character encoding
29 * - mb_http_output          - Set/Get HTTP output character encoding
30 * - mb_internal_encoding    - Set/Get internal character encoding
31 * - mb_list_encodings       - Returns an array of all supported encodings
32 * - mb_ord                  - Returns the Unicode code point of a character
33 * - mb_output_handler       - Callback function converts character encoding in output buffer
34 * - mb_scrub                - Replaces ill-formed byte sequences with substitute characters
35 * - mb_strlen               - Get string length
36 * - mb_strpos               - Find position of first occurrence of string in a string
37 * - mb_strrpos              - Find position of last occurrence of a string in a string
38 * - mb_str_split            - Convert a string to an array
39 * - mb_strtolower           - Make a string lowercase
40 * - mb_strtoupper           - Make a string uppercase
41 * - mb_substitute_character - Set/Get substitution character
42 * - mb_substr               - Get part of string
43 * - mb_stripos              - Finds position of first occurrence of a string within another, case insensitive
44 * - mb_stristr              - Finds first occurrence of a string within another, case insensitive
45 * - mb_strrchr              - Finds the last occurrence of a character in a string within another
46 * - mb_strrichr             - Finds the last occurrence of a character in a string within another, case insensitive
47 * - mb_strripos             - Finds position of last occurrence of a string within another, case insensitive
48 * - mb_strstr               - Finds first occurrence of a string within another
49 * - mb_strwidth             - Return width of string
50 * - mb_substr_count         - Count the number of substring occurrences
51 *
52 * Not implemented:
53 * - mb_convert_kana         - Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
54 * - mb_ereg_*               - Regular expression with multibyte support
55 * - mb_parse_str            - Parse GET/POST/COOKIE data and set global variable
56 * - mb_preferred_mime_name  - Get MIME charset string
57 * - mb_regex_encoding       - Returns current encoding for multibyte regex as string
58 * - mb_regex_set_options    - Set/Get the default options for mbregex functions
59 * - mb_send_mail            - Send encoded mail
60 * - mb_split                - Split multibyte string using regular expression
61 * - mb_strcut               - Get part of string
62 * - mb_strimwidth           - Get truncated string with specified width
63 *
64 * @author Nicolas Grekas <p@tchwork.com>
65 *
66 * @internal
67 */
68final class Mbstring
69{
70    public const MB_CASE_FOLD = \PHP_INT_MAX;
71
72    private const CASE_FOLD = [
73        ['µ', 'ſ', "\xCD\x85", 'ς', "\xCF\x90", "\xCF\x91", "\xCF\x95", "\xCF\x96", "\xCF\xB0", "\xCF\xB1", "\xCF\xB5", "\xE1\xBA\x9B", "\xE1\xBE\xBE"],
74        ['μ', 's', 'ι',        'σ', 'β',        'θ',        'φ',        'π',        'κ',        'ρ',        'ε',        "\xE1\xB9\xA1", 'ι'],
75    ];
76
77    private static $encodingList = ['ASCII', 'UTF-8'];
78    private static $language = 'neutral';
79    private static $internalEncoding = 'UTF-8';
80
81    public static function mb_convert_encoding($s, $toEncoding, $fromEncoding = null)
82    {
83        if (\is_array($fromEncoding) || ($fromEncoding !== null && false !== strpos($fromEncoding, ','))) {
84            $fromEncoding = self::mb_detect_encoding($s, $fromEncoding);
85        } else {
86            $fromEncoding = self::getEncoding($fromEncoding);
87        }
88
89        $toEncoding = self::getEncoding($toEncoding);
90
91        if ('BASE64' === $fromEncoding) {
92            $s = base64_decode($s);
93            $fromEncoding = $toEncoding;
94        }
95
96        if ('BASE64' === $toEncoding) {
97            return base64_encode($s);
98        }
99
100        if ('HTML-ENTITIES' === $toEncoding || 'HTML' === $toEncoding) {
101            if ('HTML-ENTITIES' === $fromEncoding || 'HTML' === $fromEncoding) {
102                $fromEncoding = 'Windows-1252';
103            }
104            if ('UTF-8' !== $fromEncoding) {
105                $s = \iconv($fromEncoding, 'UTF-8//IGNORE', $s);
106            }
107
108            return preg_replace_callback('/[\x80-\xFF]+/', [__CLASS__, 'html_encoding_callback'], $s);
109        }
110
111        if ('HTML-ENTITIES' === $fromEncoding) {
112            $s = html_entity_decode($s, \ENT_COMPAT, 'UTF-8');
113            $fromEncoding = 'UTF-8';
114        }
115
116        return \iconv($fromEncoding, $toEncoding.'//IGNORE', $s);
117    }
118
119    public static function mb_convert_variables($toEncoding, $fromEncoding, &...$vars)
120    {
121        $ok = true;
122        array_walk_recursive($vars, function (&$v) use (&$ok, $toEncoding, $fromEncoding) {
123            if (false === $v = self::mb_convert_encoding($v, $toEncoding, $fromEncoding)) {
124                $ok = false;
125            }
126        });
127
128        return $ok ? $fromEncoding : false;
129    }
130
131    public static function mb_decode_mimeheader($s)
132    {
133        return \iconv_mime_decode($s, 2, self::$internalEncoding);
134    }
135
136    public static function mb_encode_mimeheader($s, $charset = null, $transferEncoding = null, $linefeed = null, $indent = null)
137    {
138        trigger_error('mb_encode_mimeheader() is bugged. Please use iconv_mime_encode() instead', \E_USER_WARNING);
139    }
140
141    public static function mb_decode_numericentity($s, $convmap, $encoding = null)
142    {
143        if (null !== $s && !is_scalar($s) && !(\is_object($s) && method_exists($s, '__toString'))) {
144            trigger_error('mb_decode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', \E_USER_WARNING);
145
146            return null;
147        }
148
149        if (!\is_array($convmap) || (80000 > \PHP_VERSION_ID && !$convmap)) {
150            return false;
151        }
152
153        if (null !== $encoding && !is_scalar($encoding)) {
154            trigger_error('mb_decode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', \E_USER_WARNING);
155
156            return '';  // Instead of null (cf. mb_encode_numericentity).
157        }
158
159        $s = (string) $s;
160        if ('' === $s) {
161            return '';
162        }
163
164        $encoding = self::getEncoding($encoding);
165
166        if ('UTF-8' === $encoding) {
167            $encoding = null;
168            if (!preg_match('//u', $s)) {
169                $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
170            }
171        } else {
172            $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
173        }
174
175        $cnt = floor(\count($convmap) / 4) * 4;
176
177        for ($i = 0; $i < $cnt; $i += 4) {
178            // collector_decode_htmlnumericentity ignores $convmap[$i + 3]
179            $convmap[$i] += $convmap[$i + 2];
180            $convmap[$i + 1] += $convmap[$i + 2];
181        }
182
183        $s = preg_replace_callback('/&#(?:0*([0-9]+)|x0*([0-9a-fA-F]+))(?!&);?/', function (array $m) use ($cnt, $convmap) {
184            $c = isset($m[2]) ? (int) hexdec($m[2]) : $m[1];
185            for ($i = 0; $i < $cnt; $i += 4) {
186                if ($c >= $convmap[$i] && $c <= $convmap[$i + 1]) {
187                    return self::mb_chr($c - $convmap[$i + 2]);
188                }
189            }
190
191            return $m[0];
192        }, $s);
193
194        if (null === $encoding) {
195            return $s;
196        }
197
198        return \iconv('UTF-8', $encoding.'//IGNORE', $s);
199    }
200
201    public static function mb_encode_numericentity($s, $convmap, $encoding = null, $is_hex = false)
202    {
203        if (null !== $s && !is_scalar($s) && !(\is_object($s) && method_exists($s, '__toString'))) {
204            trigger_error('mb_encode_numericentity() expects parameter 1 to be string, '.\gettype($s).' given', \E_USER_WARNING);
205
206            return null;
207        }
208
209        if (!\is_array($convmap) || (80000 > \PHP_VERSION_ID && !$convmap)) {
210            return false;
211        }
212
213        if (null !== $encoding && !is_scalar($encoding)) {
214            trigger_error('mb_encode_numericentity() expects parameter 3 to be string, '.\gettype($s).' given', \E_USER_WARNING);
215
216            return null;  // Instead of '' (cf. mb_decode_numericentity).
217        }
218
219        if (null !== $is_hex && !is_scalar($is_hex)) {
220            trigger_error('mb_encode_numericentity() expects parameter 4 to be boolean, '.\gettype($s).' given', \E_USER_WARNING);
221
222            return null;
223        }
224
225        $s = (string) $s;
226        if ('' === $s) {
227            return '';
228        }
229
230        $encoding = self::getEncoding($encoding);
231
232        if ('UTF-8' === $encoding) {
233            $encoding = null;
234            if (!preg_match('//u', $s)) {
235                $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
236            }
237        } else {
238            $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
239        }
240
241        static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4];
242
243        $cnt = floor(\count($convmap) / 4) * 4;
244        $i = 0;
245        $len = \strlen($s);
246        $result = '';
247
248        while ($i < $len) {
249            $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
250            $uchr = substr($s, $i, $ulen);
251            $i += $ulen;
252            $c = self::mb_ord($uchr);
253
254            for ($j = 0; $j < $cnt; $j += 4) {
255                if ($c >= $convmap[$j] && $c <= $convmap[$j + 1]) {
256                    $cOffset = ($c + $convmap[$j + 2]) & $convmap[$j + 3];
257                    $result .= $is_hex ? sprintf('&#x%X;', $cOffset) : '&#'.$cOffset.';';
258                    continue 2;
259                }
260            }
261            $result .= $uchr;
262        }
263
264        if (null === $encoding) {
265            return $result;
266        }
267
268        return \iconv('UTF-8', $encoding.'//IGNORE', $result);
269    }
270
271    public static function mb_convert_case($s, $mode, $encoding = null)
272    {
273        $s = (string) $s;
274        if ('' === $s) {
275            return '';
276        }
277
278        $encoding = self::getEncoding($encoding);
279
280        if ('UTF-8' === $encoding) {
281            $encoding = null;
282            if (!preg_match('//u', $s)) {
283                $s = @\iconv('UTF-8', 'UTF-8//IGNORE', $s);
284            }
285        } else {
286            $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
287        }
288
289        if (\MB_CASE_TITLE == $mode) {
290            static $titleRegexp = null;
291            if (null === $titleRegexp) {
292                $titleRegexp = self::getData('titleCaseRegexp');
293            }
294            $s = preg_replace_callback($titleRegexp, [__CLASS__, 'title_case'], $s);
295        } else {
296            if (\MB_CASE_UPPER == $mode) {
297                static $upper = null;
298                if (null === $upper) {
299                    $upper = self::getData('upperCase');
300                }
301                $map = $upper;
302            } else {
303                if (self::MB_CASE_FOLD === $mode) {
304                    $s = str_replace(self::CASE_FOLD[0], self::CASE_FOLD[1], $s);
305                }
306
307                static $lower = null;
308                if (null === $lower) {
309                    $lower = self::getData('lowerCase');
310                }
311                $map = $lower;
312            }
313
314            static $ulenMask = ["\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4];
315
316            $i = 0;
317            $len = \strlen($s);
318
319            while ($i < $len) {
320                $ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
321                $uchr = substr($s, $i, $ulen);
322                $i += $ulen;
323
324                if (isset($map[$uchr])) {
325                    $uchr = $map[$uchr];
326                    $nlen = \strlen($uchr);
327
328                    if ($nlen == $ulen) {
329                        $nlen = $i;
330                        do {
331                            $s[--$nlen] = $uchr[--$ulen];
332                        } while ($ulen);
333                    } else {
334                        $s = substr_replace($s, $uchr, $i - $ulen, $ulen);
335                        $len += $nlen - $ulen;
336                        $i += $nlen - $ulen;
337                    }
338                }
339            }
340        }
341
342        if (null === $encoding) {
343            return $s;
344        }
345
346        return \iconv('UTF-8', $encoding.'//IGNORE', $s);
347    }
348
349    public static function mb_internal_encoding($encoding = null)
350    {
351        if (null === $encoding) {
352            return self::$internalEncoding;
353        }
354
355        $normalizedEncoding = self::getEncoding($encoding);
356
357        if ('UTF-8' === $normalizedEncoding || false !== @\iconv($normalizedEncoding, $normalizedEncoding, ' ')) {
358            self::$internalEncoding = $normalizedEncoding;
359
360            return true;
361        }
362
363        if (80000 > \PHP_VERSION_ID) {
364            return false;
365        }
366
367        throw new \ValueError(sprintf('Argument #1 ($encoding) must be a valid encoding, "%s" given', $encoding));
368    }
369
370    public static function mb_language($lang = null)
371    {
372        if (null === $lang) {
373            return self::$language;
374        }
375
376        switch ($normalizedLang = strtolower($lang)) {
377            case 'uni':
378            case 'neutral':
379                self::$language = $normalizedLang;
380
381                return true;
382        }
383
384        if (80000 > \PHP_VERSION_ID) {
385            return false;
386        }
387
388        throw new \ValueError(sprintf('Argument #1 ($language) must be a valid language, "%s" given', $lang));
389    }
390
391    public static function mb_list_encodings()
392    {
393        return ['UTF-8'];
394    }
395
396    public static function mb_encoding_aliases($encoding)
397    {
398        switch (strtoupper($encoding)) {
399            case 'UTF8':
400            case 'UTF-8':
401                return ['utf8'];
402        }
403
404        return false;
405    }
406
407    public static function mb_check_encoding($var = null, $encoding = null)
408    {
409        if (null === $encoding) {
410            if (null === $var) {
411                return false;
412            }
413            $encoding = self::$internalEncoding;
414        }
415
416        return self::mb_detect_encoding($var, [$encoding]) || false !== @\iconv($encoding, $encoding, $var);
417    }
418
419    public static function mb_detect_encoding($str, $encodingList = null, $strict = false)
420    {
421        if (null === $encodingList) {
422            $encodingList = self::$encodingList;
423        } else {
424            if (!\is_array($encodingList)) {
425                $encodingList = array_map('trim', explode(',', $encodingList));
426            }
427            $encodingList = array_map('strtoupper', $encodingList);
428        }
429
430        foreach ($encodingList as $enc) {
431            switch ($enc) {
432                case 'ASCII':
433                    if (!preg_match('/[\x80-\xFF]/', $str)) {
434                        return $enc;
435                    }
436                    break;
437
438                case 'UTF8':
439                case 'UTF-8':
440                    if (preg_match('//u', $str)) {
441                        return 'UTF-8';
442                    }
443                    break;
444
445                default:
446                    if (0 === strncmp($enc, 'ISO-8859-', 9)) {
447                        return $enc;
448                    }
449            }
450        }
451
452        return false;
453    }
454
455    public static function mb_detect_order($encodingList = null)
456    {
457        if (null === $encodingList) {
458            return self::$encodingList;
459        }
460
461        if (!\is_array($encodingList)) {
462            $encodingList = array_map('trim', explode(',', $encodingList));
463        }
464        $encodingList = array_map('strtoupper', $encodingList);
465
466        foreach ($encodingList as $enc) {
467            switch ($enc) {
468                default:
469                    if (strncmp($enc, 'ISO-8859-', 9)) {
470                        return false;
471                    }
472                    // no break
473                case 'ASCII':
474                case 'UTF8':
475                case 'UTF-8':
476            }
477        }
478
479        self::$encodingList = $encodingList;
480
481        return true;
482    }
483
484    public static function mb_strlen($s, $encoding = null)
485    {
486        $encoding = self::getEncoding($encoding);
487        if ('CP850' === $encoding || 'ASCII' === $encoding) {
488            return \strlen($s);
489        }
490
491        return @\iconv_strlen($s, $encoding);
492    }
493
494    public static function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
495    {
496        $encoding = self::getEncoding($encoding);
497        if ('CP850' === $encoding || 'ASCII' === $encoding) {
498            return strpos($haystack, $needle, $offset);
499        }
500
501        $needle = (string) $needle;
502        if ('' === $needle) {
503            if (80000 > \PHP_VERSION_ID) {
504                trigger_error(__METHOD__.': Empty delimiter', \E_USER_WARNING);
505
506                return false;
507            }
508
509            return 0;
510        }
511
512        return \iconv_strpos($haystack, $needle, $offset, $encoding);
513    }
514
515    public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
516    {
517        $encoding = self::getEncoding($encoding);
518        if ('CP850' === $encoding || 'ASCII' === $encoding) {
519            return strrpos($haystack, $needle, $offset);
520        }
521
522        if ($offset != (int) $offset) {
523            $offset = 0;
524        } elseif ($offset = (int) $offset) {
525            if ($offset < 0) {
526                if (0 > $offset += self::mb_strlen($needle)) {
527                    $haystack = self::mb_substr($haystack, 0, $offset, $encoding);
528                }
529                $offset = 0;
530            } else {
531                $haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
532            }
533        }
534
535        $pos = '' !== $needle || 80000 > \PHP_VERSION_ID
536            ? \iconv_strrpos($haystack, $needle, $encoding)
537            : self::mb_strlen($haystack, $encoding);
538
539        return false !== $pos ? $offset + $pos : false;
540    }
541
542    public static function mb_str_split($string, $split_length = 1, $encoding = null)
543    {
544        if (null !== $string && !is_scalar($string) && !(\is_object($string) && method_exists($string, '__toString'))) {
545            trigger_error('mb_str_split() expects parameter 1 to be string, '.\gettype($string).' given', \E_USER_WARNING);
546
547            return null;
548        }
549
550        if (1 > $split_length = (int) $split_length) {
551            if (80000 > \PHP_VERSION_ID) {
552                trigger_error('The length of each segment must be greater than zero', \E_USER_WARNING);
553                return false;
554            }
555
556            throw new \ValueError('Argument #2 ($length) must be greater than 0');
557        }
558
559        if (null === $encoding) {
560            $encoding = mb_internal_encoding();
561        }
562
563        if ('UTF-8' === $encoding = self::getEncoding($encoding)) {
564            $rx = '/(';
565            while (65535 < $split_length) {
566                $rx .= '.{65535}';
567                $split_length -= 65535;
568            }
569            $rx .= '.{'.$split_length.'})/us';
570
571            return preg_split($rx, $string, null, \PREG_SPLIT_DELIM_CAPTURE | \PREG_SPLIT_NO_EMPTY);
572        }
573
574        $result = [];
575        $length = mb_strlen($string, $encoding);
576
577        for ($i = 0; $i < $length; $i += $split_length) {
578            $result[] = mb_substr($string, $i, $split_length, $encoding);
579        }
580
581        return $result;
582    }
583
584    public static function mb_strtolower($s, $encoding = null)
585    {
586        return self::mb_convert_case($s, \MB_CASE_LOWER, $encoding);
587    }
588
589    public static function mb_strtoupper($s, $encoding = null)
590    {
591        return self::mb_convert_case($s, \MB_CASE_UPPER, $encoding);
592    }
593
594    public static function mb_substitute_character($c = null)
595    {
596        if (null === $c) {
597            return 'none';
598        }
599        if (0 === strcasecmp($c, 'none')) {
600            return true;
601        }
602        if (80000 > \PHP_VERSION_ID) {
603            return false;
604        }
605        if (\is_int($c) || 'long' === $c || 'entity' === $c) {
606            return false;
607        }
608
609        throw new \ValueError('Argument #1 ($substitute_character) must be "none", "long", "entity" or a valid codepoint');
610    }
611
612    public static function mb_substr($s, $start, $length = null, $encoding = null)
613    {
614        $encoding = self::getEncoding($encoding);
615        if ('CP850' === $encoding || 'ASCII' === $encoding) {
616            return (string) substr($s, $start, null === $length ? 2147483647 : $length);
617        }
618
619        if ($start < 0) {
620            $start = \iconv_strlen($s, $encoding) + $start;
621            if ($start < 0) {
622                $start = 0;
623            }
624        }
625
626        if (null === $length) {
627            $length = 2147483647;
628        } elseif ($length < 0) {
629            $length = \iconv_strlen($s, $encoding) + $length - $start;
630            if ($length < 0) {
631                return '';
632            }
633        }
634
635        return (string) \iconv_substr($s, $start, $length, $encoding);
636    }
637
638    public static function mb_stripos($haystack, $needle, $offset = 0, $encoding = null)
639    {
640        $haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
641        $needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);
642
643        return self::mb_strpos($haystack, $needle, $offset, $encoding);
644    }
645
646    public static function mb_stristr($haystack, $needle, $part = false, $encoding = null)
647    {
648        $pos = self::mb_stripos($haystack, $needle, 0, $encoding);
649
650        return self::getSubpart($pos, $part, $haystack, $encoding);
651    }
652
653    public static function mb_strrchr($haystack, $needle, $part = false, $encoding = null)
654    {
655        $encoding = self::getEncoding($encoding);
656        if ('CP850' === $encoding || 'ASCII' === $encoding) {
657            $pos = strrpos($haystack, $needle);
658        } else {
659            $needle = self::mb_substr($needle, 0, 1, $encoding);
660            $pos = \iconv_strrpos($haystack, $needle, $encoding);
661        }
662
663        return self::getSubpart($pos, $part, $haystack, $encoding);
664    }
665
666    public static function mb_strrichr($haystack, $needle, $part = false, $encoding = null)
667    {
668        $needle = self::mb_substr($needle, 0, 1, $encoding);
669        $pos = self::mb_strripos($haystack, $needle, $encoding);
670
671        return self::getSubpart($pos, $part, $haystack, $encoding);
672    }
673
674    public static function mb_strripos($haystack, $needle, $offset = 0, $encoding = null)
675    {
676        $haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
677        $needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);
678
679        return self::mb_strrpos($haystack, $needle, $offset, $encoding);
680    }
681
682    public static function mb_strstr($haystack, $needle, $part = false, $encoding = null)
683    {
684        $pos = strpos($haystack, $needle);
685        if (false === $pos) {
686            return false;
687        }
688        if ($part) {
689            return substr($haystack, 0, $pos);
690        }
691
692        return substr($haystack, $pos);
693    }
694
695    public static function mb_get_info($type = 'all')
696    {
697        $info = [
698            'internal_encoding' => self::$internalEncoding,
699            'http_output' => 'pass',
700            'http_output_conv_mimetypes' => '^(text/|application/xhtml\+xml)',
701            'func_overload' => 0,
702            'func_overload_list' => 'no overload',
703            'mail_charset' => 'UTF-8',
704            'mail_header_encoding' => 'BASE64',
705            'mail_body_encoding' => 'BASE64',
706            'illegal_chars' => 0,
707            'encoding_translation' => 'Off',
708            'language' => self::$language,
709            'detect_order' => self::$encodingList,
710            'substitute_character' => 'none',
711            'strict_detection' => 'Off',
712        ];
713
714        if ('all' === $type) {
715            return $info;
716        }
717        if (isset($info[$type])) {
718            return $info[$type];
719        }
720
721        return false;
722    }
723
724    public static function mb_http_input($type = '')
725    {
726        return false;
727    }
728
729    public static function mb_http_output($encoding = null)
730    {
731        return null !== $encoding ? 'pass' === $encoding : 'pass';
732    }
733
734    public static function mb_strwidth($s, $encoding = null)
735    {
736        $encoding = self::getEncoding($encoding);
737
738        if ('UTF-8' !== $encoding) {
739            $s = \iconv($encoding, 'UTF-8//IGNORE', $s);
740        }
741
742        $s = preg_replace('/[\x{1100}-\x{115F}\x{2329}\x{232A}\x{2E80}-\x{303E}\x{3040}-\x{A4CF}\x{AC00}-\x{D7A3}\x{F900}-\x{FAFF}\x{FE10}-\x{FE19}\x{FE30}-\x{FE6F}\x{FF00}-\x{FF60}\x{FFE0}-\x{FFE6}\x{20000}-\x{2FFFD}\x{30000}-\x{3FFFD}]/u', '', $s, -1, $wide);
743
744        return ($wide << 1) + \iconv_strlen($s, 'UTF-8');
745    }
746
747    public static function mb_substr_count($haystack, $needle, $encoding = null)
748    {
749        return substr_count($haystack, $needle);
750    }
751
752    public static function mb_output_handler($contents, $status)
753    {
754        return $contents;
755    }
756
757    public static function mb_chr($code, $encoding = null)
758    {
759        if (0x80 > $code %= 0x200000) {
760            $s = \chr($code);
761        } elseif (0x800 > $code) {
762            $s = \chr(0xC0 | $code >> 6).\chr(0x80 | $code & 0x3F);
763        } elseif (0x10000 > $code) {
764            $s = \chr(0xE0 | $code >> 12).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
765        } else {
766            $s = \chr(0xF0 | $code >> 18).\chr(0x80 | $code >> 12 & 0x3F).\chr(0x80 | $code >> 6 & 0x3F).\chr(0x80 | $code & 0x3F);
767        }
768
769        if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
770            $s = mb_convert_encoding($s, $encoding, 'UTF-8');
771        }
772
773        return $s;
774    }
775
776    public static function mb_ord($s, $encoding = null)
777    {
778        if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
779            $s = mb_convert_encoding($s, 'UTF-8', $encoding);
780        }
781
782        if (1 === \strlen($s)) {
783            return \ord($s);
784        }
785
786        $code = ($s = unpack('C*', substr($s, 0, 4))) ? $s[1] : 0;
787        if (0xF0 <= $code) {
788            return (($code - 0xF0) << 18) + (($s[2] - 0x80) << 12) + (($s[3] - 0x80) << 6) + $s[4] - 0x80;
789        }
790        if (0xE0 <= $code) {
791            return (($code - 0xE0) << 12) + (($s[2] - 0x80) << 6) + $s[3] - 0x80;
792        }
793        if (0xC0 <= $code) {
794            return (($code - 0xC0) << 6) + $s[2] - 0x80;
795        }
796
797        return $code;
798    }
799
800    private static function getSubpart($pos, $part, $haystack, $encoding)
801    {
802        if (false === $pos) {
803            return false;
804        }
805        if ($part) {
806            return self::mb_substr($haystack, 0, $pos, $encoding);
807        }
808
809        return self::mb_substr($haystack, $pos, null, $encoding);
810    }
811
812    private static function html_encoding_callback(array $m)
813    {
814        $i = 1;
815        $entities = '';
816        $m = unpack('C*', htmlentities($m[0], \ENT_COMPAT, 'UTF-8'));
817
818        while (isset($m[$i])) {
819            if (0x80 > $m[$i]) {
820                $entities .= \chr($m[$i++]);
821                continue;
822            }
823            if (0xF0 <= $m[$i]) {
824                $c = (($m[$i++] - 0xF0) << 18) + (($m[$i++] - 0x80) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
825            } elseif (0xE0 <= $m[$i]) {
826                $c = (($m[$i++] - 0xE0) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
827            } else {
828                $c = (($m[$i++] - 0xC0) << 6) + $m[$i++] - 0x80;
829            }
830
831            $entities .= '&#'.$c.';';
832        }
833
834        return $entities;
835    }
836
837    private static function title_case(array $s)
838    {
839        return self::mb_convert_case($s[1], \MB_CASE_UPPER, 'UTF-8').self::mb_convert_case($s[2], \MB_CASE_LOWER, 'UTF-8');
840    }
841
842    private static function getData($file)
843    {
844        if (file_exists($file = __DIR__.'/Resources/unidata/'.$file.'.php')) {
845            return require $file;
846        }
847
848        return false;
849    }
850
851    private static function getEncoding($encoding)
852    {
853        if (null === $encoding) {
854            return self::$internalEncoding;
855        }
856
857        if ('UTF-8' === $encoding) {
858            return 'UTF-8';
859        }
860
861        $encoding = strtoupper($encoding);
862
863        if ('8BIT' === $encoding || 'BINARY' === $encoding) {
864            return 'CP850';
865        }
866
867        if ('UTF8' === $encoding) {
868            return 'UTF-8';
869        }
870
871        return $encoding;
872    }
873}
874