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<?php
/**
* koi8-u encoding functions
*
* takes a string of unicode entities and converts it to a koi8-u encoded string
* Unsupported characters are replaced with ?.
*
* @copyright 2004-2010 The SquirrelMail Project Team
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @version $Id: koi8_u.php 13893 2010-01-25 02:47:41Z pdontthink $
* @package squirrelmail
* @subpackage encode
*/
/**
* Converts string to koi8-u
* @param string $string text with numeric unicode entities
* @return string koi8-u encoded text
*/
function charset_encode_koi8_u ($string) {
// don't run encoding function, if there is no encoded characters
if (! preg_match("'&#[0-9]+;'",$string) ) return $string;
$string=preg_replace("/&#([0-9]+);/e","unicodetokoi8u('\\1')",$string);
// $string=preg_replace("/&#[xX]([0-9A-F]+);/e","unicodetokoi8u(hexdec('\\1'))",$string);
return $string;
}
/**
* Return koi8-u symbol when unicode character number is provided
*
* This function is used internally by charset_encode_koi8_u
* function. It might be unavailable to other SquirrelMail functions.
* Don't use it or make sure, that functions/encode/koi8_u.php is
* included.
*
* @param int $var decimal unicode value
* @return string koi8-u character
*/
function unicodetokoi8u($var) {
$koi8uchars=array('160' => "\x9A",
'169' => "\xBF",
'176' => "\x9C",
'178' => "\x9D",
'183' => "\x9E",
'247' => "\x9F",
'1025' => "\xB3",
'1028' => "\xB4",
'1030' => "\xB6",
'1031' => "\xB7",
'1040' => "\xE1",
'1041' => "\xE2",
'1042' => "\xF7",
'1043' => "\xE7",
'1044' => "\xE4",
'1045' => "\xE5",
'1046' => "\xF6",
'1047' => "\xFA",
'1048' => "\xE9",
'1049' => "\xEA",
'1050' => "\xEB",
'1051' => "\xEC",
'1052' => "\xED",
'1053' => "\xEE",
'1054' => "\xEF",
'1055' => "\xF0",
'1056' => "\xF2",
'1057' => "\xF3",
'1058' => "\xF4",
'1059' => "\xF5",
'1060' => "\xE6",
'1061' => "\xE8",
'1062' => "\xE3",
'1063' => "\xFE",
'1064' => "\xFB",
'1065' => "\xFD",
'1066' => "\xFF",
'1067' => "\xF9",
'1068' => "\xF8",
'1069' => "\xFC",
'1070' => "\xE0",
'1071' => "\xF1",
'1072' => "\xC1",
'1073' => "\xC2",
'1074' => "\xD7",
'1075' => "\xC7",
'1076' => "\xC4",
'1077' => "\xC5",
'1078' => "\xD6",
'1079' => "\xDA",
'1080' => "\xC9",
'1081' => "\xCA",
'1082' => "\xCB",
'1083' => "\xCC",
'1084' => "\xCD",
'1085' => "\xCE",
'1086' => "\xCF",
'1087' => "\xD0",
'1088' => "\xD2",
'1089' => "\xD3",
'1090' => "\xD4",
'1091' => "\xD5",
'1092' => "\xC6",
'1093' => "\xC8",
'1094' => "\xC3",
'1095' => "\xDE",
'1096' => "\xDB",
'1097' => "\xDD",
'1098' => "\xDF",
'1099' => "\xD9",
'1100' => "\xD8",
'1101' => "\xDC",
'1102' => "\xC0",
'1103' => "\xD1",
'1105' => "\xA3",
'1108' => "\xA4",
'1110' => "\xA6",
'1111' => "\xA7",
'1168' => "\xBD",
'1169' => "\xAD",
'8729' => "\x95",
'8730' => "\x96",
'8776' => "\x97",
'8804' => "\x98",
'8805' => "\x99",
'8992' => "\x93",
'8993' => "\x9B",
'9472' => "\x80",
'9474' => "\x81",
'9484' => "\x82",
'9488' => "\x83",
'9492' => "\x84",
'9496' => "\x85",
'9500' => "\x86",
'9508' => "\x87",
'9516' => "\x88",
'9524' => "\x89",
'9532' => "\x8A",
'9552' => "\xA0",
'9553' => "\xA1",
'9554' => "\xA2",
'9556' => "\xA5",
'9559' => "\xA8",
'9560' => "\xA9",
'9561' => "\xAA",
'9562' => "\xAB",
'9563' => "\xAC",
'9565' => "\xAE",
'9566' => "\xAF",
'9567' => "\xB0",
'9568' => "\xB1",
'9569' => "\xB2",
'9571' => "\xB5",
'9574' => "\xB8",
'9575' => "\xB9",
'9576' => "\xBA",
'9577' => "\xBB",
'9578' => "\xBC",
'9580' => "\xBE",
'9600' => "\x8B",
'9604' => "\x8C",
'9608' => "\x8D",
'9612' => "\x8E",
'9616' => "\x8F",
'9617' => "\x90",
'9618' => "\x91",
'9619' => "\x92",
'9632' => "\x94");
if (array_key_exists($var,$koi8uchars)) {
$ret=$koi8uchars[$var];
} else {
$ret='?';
}
return $ret;
}
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