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664 regels
22 KiB
664 regels
22 KiB
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Polyfill\Mbstring;
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/**
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* Partial mbstring implementation in PHP, iconv based, UTF-8 centric.
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*
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* Implemented:
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* - mb_chr - Returns a specific character from its Unicode code point
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* - mb_convert_encoding - Convert character encoding
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* - mb_convert_variables - Convert character code in variable(s)
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* - mb_decode_mimeheader - Decode string in MIME header field
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* - mb_encode_mimeheader - Encode string for MIME header XXX NATIVE IMPLEMENTATION IS REALLY BUGGED
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* - mb_convert_case - Perform case folding on a string
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* - mb_get_info - Get internal settings of mbstring
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* - mb_http_input - Detect HTTP input character encoding
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* - mb_http_output - Set/Get HTTP output character encoding
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* - mb_internal_encoding - Set/Get internal character encoding
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* - mb_list_encodings - Returns an array of all supported encodings
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* - mb_ord - Returns the Unicode code point of a character
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* - mb_output_handler - Callback function converts character encoding in output buffer
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* - mb_scrub - Replaces ill-formed byte sequences with substitute characters
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* - mb_strlen - Get string length
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* - mb_strpos - Find position of first occurrence of string in a string
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* - mb_strrpos - Find position of last occurrence of a string in a string
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* - mb_strtolower - Make a string lowercase
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* - mb_strtoupper - Make a string uppercase
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* - mb_substitute_character - Set/Get substitution character
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* - mb_substr - Get part of string
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* - mb_stripos - Finds position of first occurrence of a string within another, case insensitive
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* - mb_stristr - Finds first occurrence of a string within another, case insensitive
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* - mb_strrchr - Finds the last occurrence of a character in a string within another
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* - mb_strrichr - Finds the last occurrence of a character in a string within another, case insensitive
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* - mb_strripos - Finds position of last occurrence of a string within another, case insensitive
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* - mb_strstr - Finds first occurrence of a string within anothers
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* - mb_strwidth - Return width of string
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* - mb_substr_count - Count the number of substring occurrences
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*
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* Not implemented:
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* - mb_convert_kana - Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
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* - mb_decode_numericentity - Decode HTML numeric string reference to character
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* - mb_encode_numericentity - Encode character to HTML numeric string reference
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* - mb_ereg_* - Regular expression with multibyte support
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* - mb_parse_str - Parse GET/POST/COOKIE data and set global variable
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* - mb_preferred_mime_name - Get MIME charset string
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* - mb_regex_encoding - Returns current encoding for multibyte regex as string
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* - mb_regex_set_options - Set/Get the default options for mbregex functions
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* - mb_send_mail - Send encoded mail
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* - mb_split - Split multibyte string using regular expression
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* - mb_strcut - Get part of string
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* - mb_strimwidth - Get truncated string with specified width
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*
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* @author Nicolas Grekas <p@tchwork.com>
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*
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* @internal
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*/
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final class Mbstring
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{
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const MB_CASE_FOLD = PHP_INT_MAX;
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private static $encodingList = array('ASCII', 'UTF-8');
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private static $language = 'neutral';
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private static $internalEncoding = 'UTF-8';
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private static $caseFold = array(
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array('µ','ſ',"\xCD\x85",'ς',"\xCF\x90","\xCF\x91","\xCF\x95","\xCF\x96","\xCF\xB0","\xCF\xB1","\xCF\xB5","\xE1\xBA\x9B","\xE1\xBE\xBE"),
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array('μ','s','ι', 'σ','β', 'θ', 'φ', 'π', 'κ', 'ρ', 'ε', "\xE1\xB9\xA1",'ι'),
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);
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public static function mb_convert_encoding($s, $toEncoding, $fromEncoding = null)
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{
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if (is_array($fromEncoding) || false !== strpos($fromEncoding, ',')) {
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$fromEncoding = self::mb_detect_encoding($s, $fromEncoding);
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} else {
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$fromEncoding = self::getEncoding($fromEncoding);
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}
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$toEncoding = self::getEncoding($toEncoding);
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if ('BASE64' === $fromEncoding) {
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$s = base64_decode($s);
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$fromEncoding = $toEncoding;
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}
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if ('BASE64' === $toEncoding) {
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return base64_encode($s);
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}
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if ('HTML-ENTITIES' === $toEncoding || 'HTML' === $toEncoding) {
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if ('HTML-ENTITIES' === $fromEncoding || 'HTML' === $fromEncoding) {
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$fromEncoding = 'Windows-1252';
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}
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if ('UTF-8' !== $fromEncoding) {
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$s = iconv($fromEncoding, 'UTF-8//IGNORE', $s);
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}
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return preg_replace_callback('/[\x80-\xFF]+/', array(__CLASS__, 'html_encoding_callback'), $s);
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}
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if ('HTML-ENTITIES' === $fromEncoding) {
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$s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
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$fromEncoding = 'UTF-8';
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}
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return iconv($fromEncoding, $toEncoding.'//IGNORE', $s);
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}
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public static function mb_convert_variables($toEncoding, $fromEncoding, &$a = null, &$b = null, &$c = null, &$d = null, &$e = null, &$f = null)
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{
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$vars = array(&$a, &$b, &$c, &$d, &$e, &$f);
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$ok = true;
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array_walk_recursive($vars, function (&$v) use (&$ok, $toEncoding, $fromEncoding) {
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if (false === $v = Mbstring::mb_convert_encoding($v, $toEncoding, $fromEncoding)) {
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$ok = false;
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}
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});
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return $ok ? $fromEncoding : false;
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}
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public static function mb_decode_mimeheader($s)
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{
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return iconv_mime_decode($s, 2, self::$internalEncoding);
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}
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public static function mb_encode_mimeheader($s, $charset = null, $transferEncoding = null, $linefeed = null, $indent = null)
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{
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trigger_error('mb_encode_mimeheader() is bugged. Please use iconv_mime_encode() instead', E_USER_WARNING);
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}
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public static function mb_convert_case($s, $mode, $encoding = null)
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{
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if ('' === $s .= '') {
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return '';
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}
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$encoding = self::getEncoding($encoding);
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if ('UTF-8' === $encoding) {
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$encoding = null;
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if (!preg_match('//u', $s)) {
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$s = @iconv('UTF-8', 'UTF-8//IGNORE', $s);
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}
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} else {
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$s = iconv($encoding, 'UTF-8//IGNORE', $s);
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}
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if (MB_CASE_TITLE == $mode) {
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$s = preg_replace_callback('/\b\p{Ll}/u', array(__CLASS__, 'title_case_upper'), $s);
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$s = preg_replace_callback('/\B[\p{Lu}\p{Lt}]+/u', array(__CLASS__, 'title_case_lower'), $s);
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} else {
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if (MB_CASE_UPPER == $mode) {
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static $upper = null;
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if (null === $upper) {
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$upper = self::getData('upperCase');
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}
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$map = $upper;
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} else {
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if (self::MB_CASE_FOLD === $mode) {
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$s = str_replace(self::$caseFold[0], self::$caseFold[1], $s);
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}
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static $lower = null;
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if (null === $lower) {
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$lower = self::getData('lowerCase');
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}
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$map = $lower;
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}
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static $ulenMask = array("\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4);
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$i = 0;
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$len = strlen($s);
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while ($i < $len) {
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$ulen = $s[$i] < "\x80" ? 1 : $ulenMask[$s[$i] & "\xF0"];
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$uchr = substr($s, $i, $ulen);
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$i += $ulen;
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if (isset($map[$uchr])) {
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$uchr = $map[$uchr];
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$nlen = strlen($uchr);
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if ($nlen == $ulen) {
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$nlen = $i;
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do {
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$s[--$nlen] = $uchr[--$ulen];
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} while ($ulen);
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} else {
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$s = substr_replace($s, $uchr, $i - $ulen, $ulen);
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$len += $nlen - $ulen;
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$i += $nlen - $ulen;
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}
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}
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}
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}
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if (null === $encoding) {
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return $s;
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}
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return iconv('UTF-8', $encoding.'//IGNORE', $s);
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}
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public static function mb_internal_encoding($encoding = null)
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{
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if (null === $encoding) {
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return self::$internalEncoding;
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}
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$encoding = self::getEncoding($encoding);
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if ('UTF-8' === $encoding || false !== @iconv($encoding, $encoding, ' ')) {
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self::$internalEncoding = $encoding;
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return true;
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}
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return false;
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}
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public static function mb_language($lang = null)
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{
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if (null === $lang) {
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return self::$language;
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}
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switch ($lang = strtolower($lang)) {
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case 'uni':
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case 'neutral':
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self::$language = $lang;
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return true;
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}
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return false;
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}
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public static function mb_list_encodings()
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{
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return array('UTF-8');
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}
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public static function mb_encoding_aliases($encoding)
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{
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switch (strtoupper($encoding)) {
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case 'UTF8':
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case 'UTF-8':
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return array('utf8');
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}
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return false;
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}
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public static function mb_check_encoding($var = null, $encoding = null)
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{
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if (null === $encoding) {
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if (null === $var) {
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return false;
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}
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$encoding = self::$internalEncoding;
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}
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return self::mb_detect_encoding($var, array($encoding)) || false !== @iconv($encoding, $encoding, $var);
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}
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public static function mb_detect_encoding($str, $encodingList = null, $strict = false)
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{
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if (null === $encodingList) {
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$encodingList = self::$encodingList;
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} else {
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if (!is_array($encodingList)) {
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$encodingList = array_map('trim', explode(',', $encodingList));
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}
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$encodingList = array_map('strtoupper', $encodingList);
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}
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foreach ($encodingList as $enc) {
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switch ($enc) {
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case 'ASCII':
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if (!preg_match('/[\x80-\xFF]/', $str)) {
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return $enc;
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}
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break;
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case 'UTF8':
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case 'UTF-8':
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if (preg_match('//u', $str)) {
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return 'UTF-8';
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}
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break;
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default:
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if (0 === strncmp($enc, 'ISO-8859-', 9)) {
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return $enc;
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}
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}
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}
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return false;
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}
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public static function mb_detect_order($encodingList = null)
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{
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if (null === $encodingList) {
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return self::$encodingList;
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}
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if (!is_array($encodingList)) {
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$encodingList = array_map('trim', explode(',', $encodingList));
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}
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$encodingList = array_map('strtoupper', $encodingList);
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foreach ($encodingList as $enc) {
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switch ($enc) {
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default:
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if (strncmp($enc, 'ISO-8859-', 9)) {
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return false;
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}
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case 'ASCII':
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case 'UTF8':
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case 'UTF-8':
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}
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}
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self::$encodingList = $encodingList;
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return true;
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}
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public static function mb_strlen($s, $encoding = null)
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{
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$encoding = self::getEncoding($encoding);
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if ('CP850' === $encoding || 'ASCII' === $encoding) {
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return strlen($s);
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}
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return @iconv_strlen($s, $encoding);
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}
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public static function mb_strpos($haystack, $needle, $offset = 0, $encoding = null)
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{
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$encoding = self::getEncoding($encoding);
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if ('CP850' === $encoding || 'ASCII' === $encoding) {
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return strpos($haystack, $needle, $offset);
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}
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if ('' === $needle .= '') {
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trigger_error(__METHOD__.': Empty delimiter', E_USER_WARNING);
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return false;
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}
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return iconv_strpos($haystack, $needle, $offset, $encoding);
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}
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public static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = null)
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{
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$encoding = self::getEncoding($encoding);
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if ('CP850' === $encoding || 'ASCII' === $encoding) {
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return strrpos($haystack, $needle, $offset);
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}
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if ($offset != (int) $offset) {
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$offset = 0;
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} elseif ($offset = (int) $offset) {
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if ($offset < 0) {
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$haystack = self::mb_substr($haystack, 0, $offset, $encoding);
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$offset = 0;
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} else {
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$haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
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}
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}
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$pos = iconv_strrpos($haystack, $needle, $encoding);
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return false !== $pos ? $offset + $pos : false;
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}
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public static function mb_strtolower($s, $encoding = null)
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{
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return self::mb_convert_case($s, MB_CASE_LOWER, $encoding);
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}
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public static function mb_strtoupper($s, $encoding = null)
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{
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return self::mb_convert_case($s, MB_CASE_UPPER, $encoding);
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}
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public static function mb_substitute_character($c = null)
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{
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if (0 === strcasecmp($c, 'none')) {
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return true;
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}
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return null !== $c ? false : 'none';
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}
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public static function mb_substr($s, $start, $length = null, $encoding = null)
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{
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$encoding = self::getEncoding($encoding);
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if ('CP850' === $encoding || 'ASCII' === $encoding) {
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return substr($s, $start, null === $length ? 2147483647 : $length);
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}
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if ($start < 0) {
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$start = iconv_strlen($s, $encoding) + $start;
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if ($start < 0) {
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$start = 0;
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}
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}
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if (null === $length) {
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$length = 2147483647;
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} elseif ($length < 0) {
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$length = iconv_strlen($s, $encoding) + $length - $start;
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if ($length < 0) {
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return '';
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}
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}
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return iconv_substr($s, $start, $length, $encoding).'';
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}
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public static function mb_stripos($haystack, $needle, $offset = 0, $encoding = null)
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{
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$haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
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$needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);
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return self::mb_strpos($haystack, $needle, $offset, $encoding);
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}
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public static function mb_stristr($haystack, $needle, $part = false, $encoding = null)
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{
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$pos = self::mb_stripos($haystack, $needle, 0, $encoding);
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return self::getSubpart($pos, $part, $haystack, $encoding);
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}
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public static function mb_strrchr($haystack, $needle, $part = false, $encoding = null)
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{
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$encoding = self::getEncoding($encoding);
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if ('CP850' === $encoding || 'ASCII' === $encoding) {
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return strrchr($haystack, $needle, $part);
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}
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$needle = self::mb_substr($needle, 0, 1, $encoding);
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$pos = iconv_strrpos($haystack, $needle, $encoding);
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return self::getSubpart($pos, $part, $haystack, $encoding);
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}
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public static function mb_strrichr($haystack, $needle, $part = false, $encoding = null)
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{
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$needle = self::mb_substr($needle, 0, 1, $encoding);
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$pos = self::mb_strripos($haystack, $needle, $encoding);
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return self::getSubpart($pos, $part, $haystack, $encoding);
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}
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public static function mb_strripos($haystack, $needle, $offset = 0, $encoding = null)
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{
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$haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
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$needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);
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return self::mb_strrpos($haystack, $needle, $offset, $encoding);
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}
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public static function mb_strstr($haystack, $needle, $part = false, $encoding = null)
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{
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$pos = strpos($haystack, $needle);
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if (false === $pos) {
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return false;
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}
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if ($part) {
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return substr($haystack, 0, $pos);
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}
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return substr($haystack, $pos);
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}
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public static function mb_get_info($type = 'all')
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{
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$info = array(
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'internal_encoding' => self::$internalEncoding,
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'http_output' => 'pass',
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'http_output_conv_mimetypes' => '^(text/|application/xhtml\+xml)',
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'func_overload' => 0,
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'func_overload_list' => 'no overload',
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'mail_charset' => 'UTF-8',
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'mail_header_encoding' => 'BASE64',
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'mail_body_encoding' => 'BASE64',
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'illegal_chars' => 0,
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'encoding_translation' => 'Off',
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'language' => self::$language,
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'detect_order' => self::$encodingList,
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'substitute_character' => 'none',
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|
'strict_detection' => 'Off',
|
|
);
|
|
|
|
if ('all' === $type) {
|
|
return $info;
|
|
}
|
|
if (isset($info[$type])) {
|
|
return $info[$type];
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public static function mb_http_input($type = '')
|
|
{
|
|
return false;
|
|
}
|
|
|
|
public static function mb_http_output($encoding = null)
|
|
{
|
|
return null !== $encoding ? 'pass' === $encoding : 'pass';
|
|
}
|
|
|
|
public static function mb_strwidth($s, $encoding = null)
|
|
{
|
|
$encoding = self::getEncoding($encoding);
|
|
|
|
if ('UTF-8' !== $encoding) {
|
|
$s = iconv($encoding, 'UTF-8//IGNORE', $s);
|
|
}
|
|
|
|
$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, $wide);
|
|
|
|
return ($wide << 1) + iconv_strlen($s, 'UTF-8');
|
|
}
|
|
|
|
public static function mb_substr_count($haystack, $needle, $encoding = null)
|
|
{
|
|
return substr_count($haystack, $needle);
|
|
}
|
|
|
|
public static function mb_output_handler($contents, $status)
|
|
{
|
|
return $contents;
|
|
}
|
|
|
|
public static function mb_chr($code, $encoding = null)
|
|
{
|
|
if (0x80 > $code %= 0x200000) {
|
|
$s = chr($code);
|
|
} elseif (0x800 > $code) {
|
|
$s = chr(0xC0 | $code >> 6).chr(0x80 | $code & 0x3F);
|
|
} elseif (0x10000 > $code) {
|
|
$s = chr(0xE0 | $code >> 12).chr(0x80 | $code >> 6 & 0x3F).chr(0x80 | $code & 0x3F);
|
|
} else {
|
|
$s = chr(0xF0 | $code >> 18).chr(0x80 | $code >> 12 & 0x3F).chr(0x80 | $code >> 6 & 0x3F).chr(0x80 | $code & 0x3F);
|
|
}
|
|
|
|
if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
|
|
$s = mb_convert_encoding($s, $encoding, 'UTF-8');
|
|
}
|
|
|
|
return $s;
|
|
}
|
|
|
|
public static function mb_ord($s, $encoding = null)
|
|
{
|
|
if ('UTF-8' !== $encoding = self::getEncoding($encoding)) {
|
|
$s = mb_convert_encoding($s, 'UTF-8', $encoding);
|
|
}
|
|
|
|
$code = ($s = unpack('C*', substr($s, 0, 4))) ? $s[1] : 0;
|
|
if (0xF0 <= $code) {
|
|
return (($code - 0xF0) << 18) + (($s[2] - 0x80) << 12) + (($s[3] - 0x80) << 6) + $s[4] - 0x80;
|
|
}
|
|
if (0xE0 <= $code) {
|
|
return (($code - 0xE0) << 12) + (($s[2] - 0x80) << 6) + $s[3] - 0x80;
|
|
}
|
|
if (0xC0 <= $code) {
|
|
return (($code - 0xC0) << 6) + $s[2] - 0x80;
|
|
}
|
|
|
|
return $code;
|
|
}
|
|
|
|
private static function getSubpart($pos, $part, $haystack, $encoding)
|
|
{
|
|
if (false === $pos) {
|
|
return false;
|
|
}
|
|
if ($part) {
|
|
return self::mb_substr($haystack, 0, $pos, $encoding);
|
|
}
|
|
|
|
return self::mb_substr($haystack, $pos, null, $encoding);
|
|
}
|
|
|
|
private static function html_encoding_callback($m)
|
|
{
|
|
$i = 1;
|
|
$entities = '';
|
|
$m = unpack('C*', htmlentities($m[0], ENT_COMPAT, 'UTF-8'));
|
|
|
|
while (isset($m[$i])) {
|
|
if (0x80 > $m[$i]) {
|
|
$entities .= chr($m[$i++]);
|
|
continue;
|
|
}
|
|
if (0xF0 <= $m[$i]) {
|
|
$c = (($m[$i++] - 0xF0) << 18) + (($m[$i++] - 0x80) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
|
|
} elseif (0xE0 <= $m[$i]) {
|
|
$c = (($m[$i++] - 0xE0) << 12) + (($m[$i++] - 0x80) << 6) + $m[$i++] - 0x80;
|
|
} else {
|
|
$c = (($m[$i++] - 0xC0) << 6) + $m[$i++] - 0x80;
|
|
}
|
|
|
|
$entities .= '&#'.$c.';';
|
|
}
|
|
|
|
return $entities;
|
|
}
|
|
|
|
private static function title_case_lower($s)
|
|
{
|
|
return self::mb_convert_case($s[0], MB_CASE_LOWER, 'UTF-8');
|
|
}
|
|
|
|
private static function title_case_upper($s)
|
|
{
|
|
return self::mb_convert_case($s[0], MB_CASE_UPPER, 'UTF-8');
|
|
}
|
|
|
|
private static function getData($file)
|
|
{
|
|
if (file_exists($file = __DIR__.'/Resources/unidata/'.$file.'.php')) {
|
|
return require $file;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static function getEncoding($encoding)
|
|
{
|
|
if (null === $encoding) {
|
|
return self::$internalEncoding;
|
|
}
|
|
|
|
$encoding = strtoupper($encoding);
|
|
|
|
if ('8BIT' === $encoding || 'BINARY' === $encoding) {
|
|
return 'CP850';
|
|
}
|
|
if ('UTF8' === $encoding) {
|
|
return 'UTF-8';
|
|
}
|
|
|
|
return $encoding;
|
|
}
|
|
}
|