/class/Patchwork/PHP/Override/Mbstring.php
PHP | 336 lines | 223 code | 54 blank | 59 comment | 53 complexity | e44eb2939fcc4001bf1313d7b50e869a MD5 | raw file
- <?php // vi: set fenc=utf-8 ts=4 sw=4 et:
- /*
- * Copyright (C) 2012 Nicolas Grekas - p@tchwork.com
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the (at your option):
- * Apache License v2.0 (http://apache.org/licenses/LICENSE-2.0.txt), or
- * GNU General Public License v2.0 (http://gnu.org/licenses/gpl-2.0.txt).
- */
- namespace Patchwork\PHP\Override;
- /**
- * Partial mbstring implementation in PHP, iconv based, UTF-8 centric.
- *
- * Implemented:
- * - mb_convert_encoding - Convert character encoding
- * - mb_decode_mimeheader - Decode string in MIME header field
- * - mb_encode_mimeheader - Encode string for MIME header XXX NATIVE IMPLEMENTATION IS REALLY BUGGED
- * - mb_convert_case - Perform case folding on a string
- * - mb_internal_encoding - Set/Get internal character encoding
- * - mb_list_encodings - Returns an array of all supported encodings
- * - mb_strlen - Get string length
- * - mb_strpos - Find position of first occurrence of string in a string
- * - mb_strrpos - Find position of last occurrence of a string in a string
- * - mb_strtolower - Make a string lowercase
- * - mb_strtoupper - Make a string uppercase
- * - mb_substitute_character - Set/Get substitution character
- * - mb_substr - Get part of string
- * - mb_stripos - Finds position of first occurrence of a string within another, case insensitive
- * - mb_stristr - Finds first occurrence of a string within another, case insensitive
- * - mb_strrchr - Finds the last occurrence of a character in a string within another
- * - mb_strrichr - Finds the last occurrence of a character in a string within another, case insensitive
- * - mb_strripos - Finds position of last occurrence of a string within another, case insensitive
- * - mb_strstr - Finds first occurrence of a string within anothers
- *
- * Not implemented:
- * - mb_check_encoding - Check if the string is valid for the specified encoding
- * - mb_convert_kana - Convert "kana" one from another ("zen-kaku", "han-kaku" and more)
- * - mb_convert_variables - Convert character code in variable(s)
- * - mb_decode_numericentity - Decode HTML numeric string reference to character
- * - mb_detect_encoding - Detect character encoding
- * - mb_detect_order - Set/Get character encoding detection order
- * - mb_encode_numericentity - Encode character to HTML numeric string reference
- * - mb_ereg* - Regular expression with multibyte support
- * - mb_get_info - Get internal settings of mbstring
- * - mb_http_input - Detect HTTP input character encoding
- * - mb_http_output - Set/Get HTTP output character encoding
- * - mb_language - Set/Get current language
- * - mb_list_encodings_alias_names - Returns an array of all supported alias encodings
- * - mb_list_mime_names - Returns an array or string of all supported mime names
- * - mb_output_handler - Callback function converts character encoding in output buffer
- * - mb_parse_str - Parse GET/POST/COOKIE data and set global variable
- * - mb_preferred_mime_name - Get MIME charset string
- * - mb_regex_encoding - Returns current encoding for multibyte regex as string
- * - mb_regex_set_options - Set/Get the default options for mbregex functions
- * - mb_send_mail - Send encoded mail
- * - mb_split - Split multibyte string using regular expression
- * - mb_strcut - Get part of string
- * - mb_strimwidth - Get truncated string with specified width
- * - mb_strwidth - Return width of string
- * - mb_substr_count - Count the number of substring occurrences
- */
- class Mbstring
- {
- const MB_CASE_FOLD = PHP_INT_MAX;
- protected static
- $internal_encoding = 'UTF-8',
- $caseFold = array(
- array('ΔΎ','?',"\xCD\x85",'?',"\xCF\x90","\xCF\x91","\xCF\x95","\xCF\x96","\xCF\xB0","\xCF\xB1","\xCF\xB5","\xE1\xBA\x9B","\xE1\xBE\xBE"),
- array('?','s','?', '?','?', '?', '?', '?', '?', '?', '?', "\xE1\xB9\xA1",'?' )
- );
- static function mb_convert_encoding($s, $to_encoding, $from_encoding = INF)
- {
- INF === $from_encoding && $from_encoding = self::$internal_encoding;
- if ('base64' === $from_encoding)
- {
- $s = base64_decode($s);
- $from_encoding = $to_encoding;
- }
- if ('base64' === $to_encoding) return base64_encode($s);
- if ('html-entities' === $to_encoding)
- {
- 'html-entities' === $from_encoding && $from_encoding = 'Windows-1252';
- 'utf-8' === $from_encoding || $s = iconv($from_encoding, 'UTF-8//IGNORE', $s);
- return preg_replace_callback('/[\x80-\xFF]+/', array(__CLASS__, 'html_encoding_callback'), $s);
- }
- if ('html-entities' === $from_encoding)
- {
- $s = html_entity_decode($s, ENT_COMPAT, 'UTF-8');
- $from_encoding = 'UTF-8';
- }
- return iconv($from_encoding, $to_encoding . '//IGNORE', $s);
- }
- static function mb_decode_mimeheader($s)
- {
- return iconv_mime_decode($s, 2, self::$internal_encoding . '//IGNORE');
- }
- static function mb_encode_mimeheader($s, $charset = INF, $transfer_encoding = INF, $linefeed = INF, $indent = INF)
- {
- user_error('mb_encode_mimeheader() is bugged. Please use iconv_mime_encode() instead.');
- }
- static function mb_convert_case($s, $mode, $encoding = INF)
- {
- if ('' === $s) return '';
- INF === $encoding && $encoding = self::$internal_encoding;
- if ('UTF-8' === strtoupper($encoding)) $encoding = INF;
- else $s = iconv($encoding, 'UTF-8//IGNORE', $s);
- if (MB_CASE_UPPER == $mode)
- {
- static $upper;
- isset($upper) || $upper = self::getData('upperCase');
- $map = $upper;
- }
- else
- {
- if (self::MB_CASE_FOLD === $mode) $s = str_replace(self::$caseFold[0], self::$caseFold[1], $s);
- static $lower;
- isset($lower) || $lower = self::getData('lowerCase');
- $map = $lower;
- }
- static $ulen_mask = array("\xC0" => 2, "\xD0" => 2, "\xE0" => 3, "\xF0" => 4);
- $i = 0;
- $len = strlen($s);
- while ($i < $len)
- {
- $ulen = $s[$i] < "\x80" ? 1 : $ulen_mask[$s[$i] & "\xF0"];
- $uchr = substr($s, $i, $ulen);
- $i += $ulen;
- if (isset($map[$uchr]))
- {
- $uchr = $map[$uchr];
- $nlen = strlen($uchr);
- if ($nlen == $ulen)
- {
- $nlen = $i;
- do $s[--$nlen] = $uchr[--$ulen];
- while ($ulen);
- }
- else
- {
- $s = substr_replace($s, $uchr, $i, $ulen);
- $len += $nlen - $ulen;
- $i += $nlen - $ulen;
- }
- }
- }
- if (MB_CASE_TITLE == $mode)
- {
- $s = preg_replace_callback('/\b\p{Ll}/u', array(__CLASS__, 'title_case_callback'), $s);
- }
- if (INF === $encoding) return $s;
- else return iconv('UTF-8', $encoding, $s);
- }
- static function mb_internal_encoding($encoding = INF)
- {
- if (INF === $encoding) return self::$internal_encoding;
- if ('UTF-8' === strtoupper($encoding) || false !== @iconv($encoding, $encoding, ' '))
- {
- self::$internal_encoding = $encoding;
- return true;
- }
- return false;
- }
- static function mb_list_encodings()
- {
- return array('UTF-8');
- }
- static function mb_strlen($s, $encoding = INF)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- return iconv_strlen($s, $encoding . '//IGNORE');
- }
- static function mb_strpos ($haystack, $needle, $offset = 0, $encoding = INF)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- if ('' === (string) $needle)
- {
- user_error(__METHOD__ . ': Empty delimiter', E_USER_WARNING);
- return false;
- }
- else return iconv_strpos($haystack, $needle, $offset, $encoding . '//IGNORE');
- }
- static function mb_strrpos($haystack, $needle, $offset = 0, $encoding = INF)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- if ($offset != (int) $offset)
- {
- $offset = 0;
- }
- else if ($offset = (int) $offset)
- {
- $haystack = self::mb_substr($haystack, $offset, 2147483647, $encoding);
- }
- $pos = iconv_strrpos($haystack, $needle, $encoding . '//IGNORE');
- return false !== $pos ? $offset + $pos : false;
- }
- static function mb_strtolower($s, $encoding = INF)
- {
- return self::mb_convert_case($s, MB_CASE_LOWER, $encoding);
- }
- static function mb_strtoupper($s, $encoding = INF)
- {
- return self::mb_convert_case($s, MB_CASE_UPPER, $encoding);
- }
- static function mb_substitute_character($c = INF)
- {
- return INF !== $c ? false : 'none';
- }
- static function mb_substr($s, $start, $length = 2147483647, $encoding = INF)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- if ($start < 0)
- {
- $start = iconv_strlen($s, $encoding . '//IGNORE') + $start;
- if ($start < 0) $start = 0;
- }
- if ($length < 0)
- {
- $length = iconv_strlen($s, $encoding . '//IGNORE') + $length - $start;
- if ($length < 0) return '';
- }
- return (string) iconv_substr($s, $start, $length, $encoding . '//IGNORE');
- }
- static function mb_stripos($haystack, $needle, $offset = 0, $encoding = INF)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- $haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
- $needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);
- return self::mb_strpos($haystack, $needle, $offset, $encoding);
- }
- static function mb_stristr($haystack, $needle, $part = false, $encoding = INF)
- {
- $pos = self::mb_stripos($haystack, $needle, $encoding);
- return self::getSubpart($pos, $part, $haystack, $encoding);
- }
- static function mb_strrchr($haystack, $needle, $part = false, $encoding = INF)
- {
- $needle = self::mb_substr($needle, 0, 1, $encoding);
- $pos = iconv_strrpos($haystack, $needle, $encoding);
- return self::getSubpart($pos, $part, $haystack, $encoding);
- }
- static function mb_strrichr($haystack, $needle, $part = false, $encoding = INF)
- {
- $needle = self::mb_substr($needle, 0, 1, $encoding);
- $pos = self::mb_strripos($haystack, $needle, $encoding);
- return self::getSubpart($pos, $part, $haystack, $encoding);
- }
- static function mb_strripos($haystack, $needle, $offset = 0, $encoding = INF)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- $haystack = self::mb_convert_case($haystack, self::MB_CASE_FOLD, $encoding);
- $needle = self::mb_convert_case($needle, self::MB_CASE_FOLD, $encoding);
- return self::mb_strrpos($haystack, $needle, $offset, $encoding);
- }
- static function mb_strstr($haystack, $needle, $part = false, $encoding = INF)
- {
- $pos = strpos($haystack, $needle);
- if (false === $pos) return false;
- if ($part) return substr($haystack, 0, $pos);
- else return substr($haystack, $pos);
- }
- protected static function getSubpart($pos, $part, $haystack, $encoding)
- {
- INF === $encoding && $encoding = self::$internal_encoding;
- if (false === $pos) return false;
- if ($part) return self::mb_substr($haystack, 0, $pos, $encoding);
- else return self::mb_substr($haystack, $pos, 2147483647, $encoding);
- }
- protected static function html_encoding_callback($m)
- {
- return htmlentities($m, ENT_COMPAT, 'UTF-8');
- }
- protected static function title_case_callback($s)
- {
- return self::mb_convert_case($s[0], MB_CASE_UPPER, 'UTF-8');
- }
- protected static function getData($file)
- {
- $file = __DIR__ . '/unidata/' . $file . '.ser';
- if (file_exists($file)) return unserialize(file_get_contents($file));
- else return false;
- }
- }