squirrelmail/functions/decode/koi8_r.php

<?php
/**
 * decode/koi8-r.php
 *
 * Copyright (c) 2003-2004 The SquirrelMail Project Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * This file contains koi8-r decoding function that is needed to read
 * koi8-r encoded mails in non-koi8-r locale.
 * 
 * Original data taken from:
 *  ftp://ftp.unicode.org/Public/MAPPINGS/VENDORS/MISC/KOI8-R.TXT
 *
 * Name:             KOI8-R (RFC1489) to Unicode
 * Unicode version:  3.0
 * Table version:    1.0
 * Table format:     Format A
 * Date:             18 August 1999
 * Authors:          Helmut Richter <richter@lrz.de>
 *
 * Copyright (c) 1991-1999 Unicode, Inc.  All Rights reserved.
 *
 * This file is provided as-is by Unicode, Inc. (The Unicode Consortium).
 * No claims are made as to fitness for any particular purpose.  No
 * warranties of any kind are expressed or implied.  The recipient
 * agrees to determine applicability of information provided.  If this
 * file has been provided on optical media by Unicode, Inc., the sole
 * remedy for any claim will be exchange of defective media within 90
 * days of receipt.
 *
 * Unicode, Inc. hereby grants the right to freely use the information
 * supplied in this file in the creation of products supporting the
 * Unicode Standard, and to make copies of this file in any form for
 * internal or external distribution as long as this notice remains
 * attached.
 *
 * @version $Id$
 * @package squirrelmail
 * @subpackage decode
 */

/**
 * Decode koi8r strings
 * @param string $string Encoded string
 * @return string Decoded string
 */
function charset_decode_koi8_r ($string) {
    global $default_charset;

    if (strtolower($default_charset) == 'koi8-r')
        return $string;

    /* Only do the slow convert if there are 8-bit characters */
    /* avoid using 0xA0 (\240) in ereg ranges. RH73 does not like that */
    if (! ereg("[\200-\237]", $string) and ! ereg("[\241-\377]", $string) )
        return $string;

    $koi8r = array(
	"\x80" => '&#9472;',
	"\x81" => '&#9474;',
	"\x82" => '&#9484;',
	"\x83" => '&#9488;',
	"\x84" => '&#9492;',
	"\x85" => '&#9496;',
	"\x86" => '&#9500;',
	"\x87" => '&#9508;',
	"\x88" => '&#9516;',
	"\x89" => '&#9524;',
	"\x8A" => '&#9532;',
	"\x8B" => '&#9600;',
	"\x8C" => '&#9604;',
	"\x8D" => '&#9608;',
	"\x8E" => '&#9612;',
	"\x8F" => '&#9616;',
	"\x90" => '&#9617;',
	"\x91" => '&#9618;',
	"\x92" => '&#9619;',
	"\x93" => '&#8992;',
	"\x94" => '&#9632;',
	"\x95" => '&#8729;',
	"\x96" => '&#8730;',
	"\x97" => '&#8776;',
	"\x98" => '&#8804;',
	"\x99" => '&#8805;',
	"\x9A" => '&#160;',
	"\x9B" => '&#8993;',
	"\x9C" => '&#176;',
	"\x9D" => '&#178;',
	"\x9E" => '&#183;',
	"\x9F" => '&#247;',
	"\xA0" => '&#9552;',
	"\xA1" => '&#9553;',
	"\xA2" => '&#9554;',
	"\xA3" => '&#1105;',
	"\xA4" => '&#9555;',
	"\xA5" => '&#9556;',
	"\xA6" => '&#9557;',
	"\xA7" => '&#9558;',
	"\xA8" => '&#9559;',
	"\xA9" => '&#9560;',
	"\xAA" => '&#9561;',
	"\xAB" => '&#9562;',
	"\xAC" => '&#9563;',
	"\xAD" => '&#9564;',
	"\xAE" => '&#9565;',
	"\xAF" => '&#9566;',
	"\xB0" => '&#9567;',
	"\xB1" => '&#9568;',
	"\xB2" => '&#9569;',
	"\xB3" => '&#1025;',
	"\xB4" => '&#9570;',
	"\xB5" => '&#9571;',
	"\xB6" => '&#9572;',
	"\xB7" => '&#9573;',
	"\xB8" => '&#9574;',
	"\xB9" => '&#9575;',
	"\xBA" => '&#9576;',
	"\xBB" => '&#9577;',
	"\xBC" => '&#9578;',
	"\xBD" => '&#9579;',
	"\xBE" => '&#9580;',
	"\xBF" => '&#169;',
	"\xC0" => '&#1102;',
	"\xC1" => '&#1072;',
	"\xC2" => '&#1073;',
	"\xC3" => '&#1094;',
	"\xC4" => '&#1076;',
	"\xC5" => '&#1077;',
	"\xC6" => '&#1092;',
	"\xC7" => '&#1075;',
	"\xC8" => '&#1093;',
	"\xC9" => '&#1080;',
	"\xCA" => '&#1081;',
	"\xCB" => '&#1082;',
	"\xCC" => '&#1083;',
	"\xCD" => '&#1084;',
	"\xCE" => '&#1085;',
	"\xCF" => '&#1086;',
	"\xD0" => '&#1087;',
	"\xD1" => '&#1103;',
	"\xD2" => '&#1088;',
	"\xD3" => '&#1089;',
	"\xD4" => '&#1090;',
	"\xD5" => '&#1091;',
	"\xD6" => '&#1078;',
	"\xD7" => '&#1074;',
	"\xD8" => '&#1100;',
	"\xD9" => '&#1099;',
	"\xDA" => '&#1079;',
	"\xDB" => '&#1096;',
	"\xDC" => '&#1101;',
	"\xDD" => '&#1097;',
	"\xDE" => '&#1095;',
	"\xDF" => '&#1098;',
	"\xE0" => '&#1070;',
	"\xE1" => '&#1040;',
	"\xE2" => '&#1041;',
	"\xE3" => '&#1062;',
	"\xE4" => '&#1044;',
	"\xE5" => '&#1045;',
	"\xE6" => '&#1060;',
	"\xE7" => '&#1043;',
	"\xE8" => '&#1061;',
	"\xE9" => '&#1048;',
	"\xEA" => '&#1049;',
	"\xEB" => '&#1050;',
	"\xEC" => '&#1051;',
	"\xED" => '&#1052;',
	"\xEE" => '&#1053;',
	"\xEF" => '&#1054;',
	"\xF0" => '&#1055;',
	"\xF1" => '&#1071;',
	"\xF2" => '&#1056;',
	"\xF3" => '&#1057;',
	"\xF4" => '&#1058;',
	"\xF5" => '&#1059;',
	"\xF6" => '&#1046;',
	"\xF7" => '&#1042;',
	"\xF8" => '&#1068;',
	"\xF9" => '&#1067;',
	"\xFA" => '&#1047;',
	"\xFB" => '&#1064;',
	"\xFC" => '&#1069;',
	"\xFD" => '&#1065;',
	"\xFE" => '&#1063;',
	"\xFF" => '&#1066;'
    );

    $string = str_replace(array_keys($koi8r), array_values($koi8r), $string);

    return $string;
}

?>