diff options
Diffstat (limited to 'html/includes/encoding.php')
| -rw-r--r-- | html/includes/encoding.php | 304 |
1 files changed, 304 insertions, 0 deletions
diff --git a/html/includes/encoding.php b/html/includes/encoding.php new file mode 100644 index 0000000..a559a3b --- /dev/null +++ b/html/includes/encoding.php @@ -0,0 +1,304 @@ +<?php +/* +Copyright (c) 2008 Sebastián Grignoli +All rights reserved. +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +3. Neither the name of copyright holders nor the names of its + contributors may be used to endorse or promote products derived + from this software without specific prior written permission. +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED +TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR +PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS OR CONTRIBUTORS +BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. +*/ +/** + * @author "Sebastián Grignoli" <grignoli@gmail.com> + * @package Encoding + * @version 2.0 + * @link https://github.com/neitanod/forceutf8 + * @example https://github.com/neitanod/forceutf8 + * @license Revised BSD + */ +namespace ForceUTF8; +class Encoding { + const ICONV_TRANSLIT = "TRANSLIT"; + const ICONV_IGNORE = "IGNORE"; + const WITHOUT_ICONV = ""; + protected static $win1252ToUtf8 = array( + 128 => "\xe2\x82\xac", + 130 => "\xe2\x80\x9a", + 131 => "\xc6\x92", + 132 => "\xe2\x80\x9e", + 133 => "\xe2\x80\xa6", + 134 => "\xe2\x80\xa0", + 135 => "\xe2\x80\xa1", + 136 => "\xcb\x86", + 137 => "\xe2\x80\xb0", + 138 => "\xc5\xa0", + 139 => "\xe2\x80\xb9", + 140 => "\xc5\x92", + 142 => "\xc5\xbd", + 145 => "\xe2\x80\x98", + 146 => "\xe2\x80\x99", + 147 => "\xe2\x80\x9c", + 148 => "\xe2\x80\x9d", + 149 => "\xe2\x80\xa2", + 150 => "\xe2\x80\x93", + 151 => "\xe2\x80\x94", + 152 => "\xcb\x9c", + 153 => "\xe2\x84\xa2", + 154 => "\xc5\xa1", + 155 => "\xe2\x80\xba", + 156 => "\xc5\x93", + 158 => "\xc5\xbe", + 159 => "\xc5\xb8" + ); + protected static $brokenUtf8ToUtf8 = array( + "\xc2\x80" => "\xe2\x82\xac", + "\xc2\x82" => "\xe2\x80\x9a", + "\xc2\x83" => "\xc6\x92", + "\xc2\x84" => "\xe2\x80\x9e", + "\xc2\x85" => "\xe2\x80\xa6", + "\xc2\x86" => "\xe2\x80\xa0", + "\xc2\x87" => "\xe2\x80\xa1", + "\xc2\x88" => "\xcb\x86", + "\xc2\x89" => "\xe2\x80\xb0", + "\xc2\x8a" => "\xc5\xa0", + "\xc2\x8b" => "\xe2\x80\xb9", + "\xc2\x8c" => "\xc5\x92", + "\xc2\x8e" => "\xc5\xbd", + "\xc2\x91" => "\xe2\x80\x98", + "\xc2\x92" => "\xe2\x80\x99", + "\xc2\x93" => "\xe2\x80\x9c", + "\xc2\x94" => "\xe2\x80\x9d", + "\xc2\x95" => "\xe2\x80\xa2", + "\xc2\x96" => "\xe2\x80\x93", + "\xc2\x97" => "\xe2\x80\x94", + "\xc2\x98" => "\xcb\x9c", + "\xc2\x99" => "\xe2\x84\xa2", + "\xc2\x9a" => "\xc5\xa1", + "\xc2\x9b" => "\xe2\x80\xba", + "\xc2\x9c" => "\xc5\x93", + "\xc2\x9e" => "\xc5\xbe", + "\xc2\x9f" => "\xc5\xb8" + ); + protected static $utf8ToWin1252 = array( + "\xe2\x82\xac" => "\x80", + "\xe2\x80\x9a" => "\x82", + "\xc6\x92" => "\x83", + "\xe2\x80\x9e" => "\x84", + "\xe2\x80\xa6" => "\x85", + "\xe2\x80\xa0" => "\x86", + "\xe2\x80\xa1" => "\x87", + "\xcb\x86" => "\x88", + "\xe2\x80\xb0" => "\x89", + "\xc5\xa0" => "\x8a", + "\xe2\x80\xb9" => "\x8b", + "\xc5\x92" => "\x8c", + "\xc5\xbd" => "\x8e", + "\xe2\x80\x98" => "\x91", + "\xe2\x80\x99" => "\x92", + "\xe2\x80\x9c" => "\x93", + "\xe2\x80\x9d" => "\x94", + "\xe2\x80\xa2" => "\x95", + "\xe2\x80\x93" => "\x96", + "\xe2\x80\x94" => "\x97", + "\xcb\x9c" => "\x98", + "\xe2\x84\xa2" => "\x99", + "\xc5\xa1" => "\x9a", + "\xe2\x80\xba" => "\x9b", + "\xc5\x93" => "\x9c", + "\xc5\xbe" => "\x9e", + "\xc5\xb8" => "\x9f" + ); + static function toUTF8($text){ + /** + * Function \ForceUTF8\Encoding::toUTF8 + * + * This function leaves UTF8 characters alone, while converting almost all non-UTF8 to UTF8. + * + * It assumes that the encoding of the original string is either Windows-1252 or ISO 8859-1. + * + * It may fail to convert characters to UTF-8 if they fall into one of these scenarios: + * + * 1) when any of these characters: ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞß + * are followed by any of these: ("group B") + * ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶•¸¹º»¼½¾¿ + * For example: %ABREPRESENT%C9%BB. «REPRESENTÉ» + * The "«" (%AB) character will be converted, but the "É" followed by "»" (%C9%BB) + * is also a valid unicode character, and will be left unchanged. + * + * 2) when any of these: àáâãäåæçèéêëìíîï are followed by TWO chars from group B, + * 3) when any of these: ðñòó are followed by THREE chars from group B. + * + * @name toUTF8 + * @param string $text Any string. + * @return string The same string, UTF8 encoded + * + */ + if(is_array($text)) + { + foreach($text as $k => $v) + { + $text[$k] = self::toUTF8($v); + } + return $text; + } elseif(is_string($text)) { + if ( function_exists('mb_strlen') && ((int) ini_get('mbstring.func_overload')) & 2) { + $max = mb_strlen($text,'8bit'); + } else { + $max = strlen($text); + } + $buf = ""; + for($i = 0; $i < $max; $i++){ + $c1 = $text{$i}; + if($c1>="\xc0"){ //Should be converted to UTF8, if it's not UTF8 already + $c2 = $i+1 >= $max? "\x00" : $text{$i+1}; + $c3 = $i+2 >= $max? "\x00" : $text{$i+2}; + $c4 = $i+3 >= $max? "\x00" : $text{$i+3}; + if($c1 >= "\xc0" & $c1 <= "\xdf"){ //looks like 2 bytes UTF8 + if($c2 >= "\x80" && $c2 <= "\xbf"){ //yeah, almost sure it's UTF8 already + $buf .= $c1 . $c2; + $i++; + } else { //not valid UTF8. Convert it. + $cc1 = (chr(ord($c1) / 64) | "\xc0"); + $cc2 = ($c1 & "\x3f") | "\x80"; + $buf .= $cc1 . $cc2; + } + } elseif($c1 >= "\xe0" & $c1 <= "\xef"){ //looks like 3 bytes UTF8 + if($c2 >= "\x80" && $c2 <= "\xbf" && $c3 >= "\x80" && $c3 <= "\xbf"){ //yeah, almost sure it's UTF8 already + $buf .= $c1 . $c2 . $c3; + $i = $i + 2; + } else { //not valid UTF8. Convert it. + $cc1 = (chr(ord($c1) / 64) | "\xc0"); + $cc2 = ($c1 & "\x3f") | "\x80"; + $buf .= $cc1 . $cc2; + } + } elseif($c1 >= "\xf0" & $c1 <= "\xf7"){ //looks like 4 bytes UTF8 + if($c2 >= "\x80" && $c2 <= "\xbf" && $c3 >= "\x80" && $c3 <= "\xbf" && $c4 >= "\x80" && $c4 <= "\xbf"){ //yeah, almost sure it's UTF8 already + $buf .= $c1 . $c2 . $c3 . $c4; + $i = $i + 3; + } else { //not valid UTF8. Convert it. + $cc1 = (chr(ord($c1) / 64) | "\xc0"); + $cc2 = ($c1 & "\x3f") | "\x80"; + $buf .= $cc1 . $cc2; + } + } else { //doesn't look like UTF8, but should be converted + $cc1 = (chr(ord($c1) / 64) | "\xc0"); + $cc2 = (($c1 & "\x3f") | "\x80"); + $buf .= $cc1 . $cc2; + } + } elseif(($c1 & "\xc0") == "\x80"){ // needs conversion + if(isset(self::$win1252ToUtf8[ord($c1)])) { //found in Windows-1252 special cases + $buf .= self::$win1252ToUtf8[ord($c1)]; + } else { + $cc1 = (chr(ord($c1) / 64) | "\xc0"); + $cc2 = (($c1 & "\x3f") | "\x80"); + $buf .= $cc1 . $cc2; + } + } else { // it doesn't need conversion + $buf .= $c1; + } + } + return $buf; + } else { + return $text; + } + } + static function toWin1252($text, $option = self::WITHOUT_ICONV) { + if(is_array($text)) { + foreach($text as $k => $v) { + $text[$k] = self::toWin1252($v, $option); + } + return $text; + } elseif(is_string($text)) { + return static::utf8_decode($text, $option); + } else { + return $text; + } + } + static function toISO8859($text) { + return self::toWin1252($text); + } + static function toLatin1($text) { + return self::toWin1252($text); + } + static function fixUTF8($text, $option = self::WITHOUT_ICONV){ + if(is_array($text)) { + foreach($text as $k => $v) { + $text[$k] = self::fixUTF8($v, $option); + } + return $text; + } + $last = ""; + while($last <> $text){ + $last = $text; + $text = self::toUTF8(static::utf8_decode($text, $option)); + } + $text = self::toUTF8(static::utf8_decode($text, $option)); + return $text; + } + static function UTF8FixWin1252Chars($text){ + // If you received an UTF-8 string that was converted from Windows-1252 as it was ISO8859-1 + // (ignoring Windows-1252 chars from 80 to 9F) use this function to fix it. + // See: http://en.wikipedia.org/wiki/Windows-1252 + return str_replace(array_keys(self::$brokenUtf8ToUtf8), array_values(self::$brokenUtf8ToUtf8), $text); + } + static function removeBOM($str=""){ + if(substr($str, 0,3) == pack("CCC",0xef,0xbb,0xbf)) { + $str=substr($str, 3); + } + return $str; + } + public static function normalizeEncoding($encodingLabel) + { + $encoding = strtoupper($encodingLabel); + $encoding = preg_replace('/[^a-zA-Z0-9\s]/', '', $encoding); + $equivalences = array( + 'ISO88591' => 'ISO-8859-1', + 'ISO8859' => 'ISO-8859-1', + 'ISO' => 'ISO-8859-1', + 'LATIN1' => 'ISO-8859-1', + 'LATIN' => 'ISO-8859-1', + 'UTF8' => 'UTF-8', + 'UTF' => 'UTF-8', + 'WIN1252' => 'ISO-8859-1', + 'WINDOWS1252' => 'ISO-8859-1' + ); + if(empty($equivalences[$encoding])){ + return 'UTF-8'; + } + return $equivalences[$encoding]; + } + public static function encode($encodingLabel, $text) + { + $encodingLabel = self::normalizeEncoding($encodingLabel); + if($encodingLabel == 'UTF-8') return Encoding::toUTF8($text); + if($encodingLabel == 'ISO-8859-1') return Encoding::toLatin1($text); + } + protected static function utf8_decode($text, $option) + { + if ($option == self::WITHOUT_ICONV || !function_exists('iconv')) { + $o = utf8_decode( + str_replace(array_keys(self::$utf8ToWin1252), array_values(self::$utf8ToWin1252), self::toUTF8($text)) + ); + } else { + $o = iconv("UTF-8", "Windows-1252" . ($option == self::ICONV_TRANSLIT ? '//TRANSLIT' : ($option == self::ICONV_IGNORE ? '//IGNORE' : '')), $text); + } + return $o; + } +}
\ No newline at end of file |