<?php

/**
 * i18n.php
 *
 * Borrowed from squirrelmail for TUTOS
 *
 * Copyright (c) 1999-2002 The SquirrelMail Project Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * This file contains variuos functions that are needed to do
 * internationalization of SquirrelMail.
 *
 * Internally the output character set is used. Other characters are
 * encoded using Unicode entities according to HTML 4.0.
 *
 * $Id: i18n.php,v 1.3 2004/12/21 20:02:31 sarajkumar Exp $
 */

  /**
   * function borrowed from squirrelmail mime support
   * This functions decode strings that is encoded according to
   * RFC1522 (MIME Part Two: Message Header Extensions for Non-ASCII Text).
   * Patched by Christian Schmidt <christian@ostenfeld.dk>  23/03/2002
   */
  global $calpath;
  function decodeHeader ($string, $utfencode=true) {
    if (is_array($string)) {
      $string = implode("\n", $string);
    }
    $i = 0;
    while (preg_match('/^(.{' . $i . '})(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=/Ui',
                      $string, $res)) {
        $prefix = $res[1];
        // Ignore white-space between consecutive encoded-words
        if (strspn($res[2], " \t") != strlen($res[2])) {
            $prefix .= $res[2];
        }

        if (ucfirst($res[4]) == 'B') {
            $replace = base64_decode($res[5]);
        } else {
            $replace = str_replace('_', ' ', $res[5]);
            $replace = preg_replace('/=([0-9a-f]{2})/ie', 'chr(hexdec("\1"))',
                                    $replace);
            /* Only encode into entities by default. Some places
               don't need the encoding, like the compose form. */
            if ($utfencode) {
                $replace = charset_decode($res[3], $replace);
            }
        }
        $string = $prefix . $replace . substr($string, strlen($res[0]));
        $i = strlen($prefix) + strlen($replace);
    }
    return( $string );
  }

/* Decodes a string to the internal encoding from the given charset */
function charset_decode ($charset, $string) {

    /* All HTML special characters are 7 bit and can be replaced first */
    $string = htmlspecialchars ($string);

    $charset = strtolower($charset);

    if (ereg('iso-8859-([[:digit:]]+)', $charset, $res)) {
        if ($res[1] == '1') {
            $ret = charset_decode_iso_8859_1 ($string);
        } else if ($res[1] == '2') {
            $ret = charset_decode_iso_8859_2 ($string);
        } else if ($res[1] == '7') {
            $ret = charset_decode_iso_8859_7 ($string);
        } else if ($res[1] == '15') {
            $ret = charset_decode_iso_8859_15 ($string);
        } else {
            $ret = charset_decode_iso_8859_default ($string);
        }
    } else if ($charset == 'ns_4551-1') {
        $ret = charset_decode_ns_4551_1 ($string);
    } else if ($charset == 'koi8-r') {
        $ret = charset_decode_koi8r ($string);
    } else if ($charset == 'windows-1251') {
        $ret = charset_decode_koi8r ($string);
    } else {
        $ret = $string;
    }
    return( $ret );
}

/*
 iso-8859-1 is the same as Latin 1 and is normally used
 in western europe.
 */
function charset_decode_iso_8859_1 ($string) {
    global $default_charset;

    if (strtolower($default_charset) <> 'iso-8859-1') {
        /* Only do the slow convert if there are 8-bit characters */
        if (ereg("[\200-\377]", $string)) {
            $string = str_replace("\201", '&#129;', $string);
            $string = str_replace("\202", '&#130;', $string);
            $string = str_replace("\203", '&#131;', $string);
            $string = str_replace("\204", '&#132;', $string);
            $string = str_replace("\205", '&#133;', $string);
            $string = str_replace("\206", '&#134;', $string);
            $string = str_replace("\207", '&#135;', $string);
            $string = str_replace("\210", '&#136;', $string);
            $string = str_replace("\211", '&#137;', $string);
            $string = str_replace("\212", '&#138;', $string);
            $string = str_replace("\213", '&#139;', $string);
            $string = str_replace("\214", '&#140;', $string);
            $string = str_replace("\215", '&#141;', $string);
            $string = str_replace("\216", '&#142;', $string);
            $string = str_replace("\217", '&#143;', $string);
            $string = str_replace("\220", '&#144;', $string);
            $string = str_replace("\221", '&#145;', $string);
            $string = str_replace("\222", '&#146;', $string);
            $string = str_replace("\223", '&#147;', $string);
            $string = str_replace("\224", '&#148;', $string);
            $string = str_replace("\225", '&#149;', $string);
            $string = str_replace("\226", '&#150;', $string);
            $string = str_replace("\227", '&#151;', $string);
            $string = str_replace("\230", '&#152;', $string);
            $string = str_replace("\231", '&#153;', $string);
            $string = str_replace("\232", '&#154;', $string);
            $string = str_replace("\233", '&#155;', $string);
            $string = str_replace("\234", '&#156;', $string);
            $string = str_replace("\235", '&#157;', $string);
            $string = str_replace("\236", '&#158;', $string);
            $string = str_replace("\237", '&#159;', $string);
            $string = str_replace("\240", '&#160;', $string);
            $string = str_replace("\241", '&#161;', $string);
            $string = str_replace("\242", '&#162;', $string);
            $string = str_replace("\243", '&#163;', $string);
            $string = str_replace("\244", '&#164;', $string);
            $string = str_replace("\245", '&#165;', $string);
            $string = str_replace("\246", '&#166;', $string);
            $string = str_replace("\247", '&#167;', $string);
            $string = str_replace("\250", '&#168;', $string);
            $string = str_replace("\251", '&#169;', $string);
            $string = str_replace("\252", '&#170;', $string);
            $string = str_replace("\253", '&#171;', $string);
            $string = str_replace("\254", '&#172;', $string);
            $string = str_replace("\255", '&#173;', $string);
            $string = str_replace("\256", '&#174;', $string);
            $string = str_replace("\257", '&#175;', $string);
            $string = str_replace("\260", '&#176;', $string);
            $string = str_replace("\261", '&#177;', $string);
            $string = str_replace("\262", '&#178;', $string);
            $string = str_replace("\263", '&#179;', $string);
            $string = str_replace("\264", '&#180;', $string);
            $string = str_replace("\265", '&#181;', $string);
            $string = str_replace("\266", '&#182;', $string);
            $string = str_replace("\267", '&#183;', $string);
            $string = str_replace("\270", '&#184;', $string);
            $string = str_replace("\271", '&#185;', $string);
            $string = str_replace("\272", '&#186;', $string);
            $string = str_replace("\273", '&#187;', $string);
            $string = str_replace("\274", '&#188;', $string);
            $string = str_replace("\275", '&#189;', $string);
            $string = str_replace("\276", '&#190;', $string);
            $string = str_replace("\277", '&#191;', $string);
            $string = str_replace("\300", '&#192;', $string);
            $string = str_replace("\301", '&#193;', $string);
            $string = str_replace("\302", '&#194;', $string);
            $string = str_replace("\303", '&#195;', $string);
            $string = str_replace("\304", '&#196;', $string);
            $string = str_replace("\305", '&#197;', $string);
            $string = str_replace("\306", '&#198;', $string);
            $string = str_replace("\307", '&#199;', $string);
            $string = str_replace("\310", '&#200;', $string);
            $string = str_replace("\311", '&#201;', $string);
            $string = str_replace("\312", '&#202;', $string);
            $string = str_replace("\313", '&#203;', $string);
            $string = str_replace("\314", '&#204;', $string);
            $string = str_replace("\315", '&#205;', $string);
            $string = str_replace("\316", '&#206;', $string);
            $string = str_replace("\317", '&#207;', $string);
            $string = str_replace("\320", '&#208;', $string);
            $string = str_replace("\321", '&#209;', $string);
            $string = str_replace("\322", '&#210;', $string);
            $string = str_replace("\323", '&#211;', $string);
            $string = str_replace("\324", '&#212;', $string);
            $string = str_replace("\325", '&#213;', $string);
            $string = str_replace("\326", '&#214;', $string);
            $string = str_replace("\327", '&#215;', $string);
            $string = str_replace("\330", '&#216;', $string);
            $string = str_replace("\331", '&#217;', $string);
            $string = str_replace("\332", '&#218;', $string);
            $string = str_replace("\333", '&#219;', $string);
            $string = str_replace("\334", '&#220;', $string);
            $string = str_replace("\335", '&#221;', $string);
            $string = str_replace("\336", '&#222;', $string);
            $string = str_replace("\337", '&#223;', $string);
            $string = str_replace("\340", '&#224;', $string);
            $string = str_replace("\341", '&#225;', $string);
            $string = str_replace("\342", '&#226;', $string);
            $string = str_replace("\343", '&#227;', $string);
            $string = str_replace("\344", '&#228;', $string);
            $string = str_replace("\345", '&#229;', $string);
            $string = str_replace("\346", '&#230;', $string);
            $string = str_replace("\347", '&#231;', $string);
            $string = str_replace("\350", '&#232;', $string);
            $string = str_replace("\351", '&#233;', $string);
            $string = str_replace("\352", '&#234;', $string);
            $string = str_replace("\353", '&#235;', $string);
            $string = str_replace("\354", '&#236;', $string);
            $string = str_replace("\355", '&#237;', $string);
            $string = str_replace("\356", '&#238;', $string);
            $string = str_replace("\357", '&#239;', $string);
            $string = str_replace("\360", '&#240;', $string);
            $string = str_replace("\361", '&#241;', $string);
            $string = str_replace("\362", '&#242;', $string);
            $string = str_replace("\363", '&#243;', $string);
            $string = str_replace("\364", '&#244;', $string);
            $string = str_replace("\365", '&#245;', $string);
            $string = str_replace("\366", '&#246;', $string);
            $string = str_replace("\367", '&#247;', $string);
            $string = str_replace("\370", '&#248;', $string);
            $string = str_replace("\371", '&#249;', $string);
            $string = str_replace("\372", '&#250;', $string);
            $string = str_replace("\373", '&#251;', $string);
            $string = str_replace("\374", '&#252;', $string);
            $string = str_replace("\375", '&#253;', $string);
            $string = str_replace("\376", '&#254;', $string);
            $string = str_replace("\377", '&#255;', $string);
        }
    }

    return ($string);
}

/* iso-8859-2 is used for some eastern European languages */
function charset_decode_iso_8859_2 ($string) {
    global $default_charset;

    if (strtolower($default_charset) == 'iso-8859-2')
        return $string;

    /* Only do the slow convert if there are 8-bit characters */
    if (! ereg("[\200-\377]", $string))
        return $string;

    /* NO-BREAK SPACE */
    $string = str_replace("\240", '&#160;', $string);
    /* LATIN CAPITAL LETTER A WITH OGONEK */
    $string = str_replace("\241", '&#260;', $string);
    /* BREVE */
    $string = str_replace("\242", '&#728;', $string);
    // LATIN CAPITAL LETTER L WITH STROKE
    $string = str_replace("\243", '&#321;', $string);
    // CURRENCY SIGN
    $string = str_replace("\244", '&#164;', $string);
    // LATIN CAPITAL LETTER L WITH CARON
    $string = str_replace("\245", '&#317;', $string);
    // LATIN CAPITAL LETTER S WITH ACUTE
    $string = str_replace("\246", '&#346;', $string);
    // SECTION SIGN
    $string = str_replace("\247", '&#167;', $string);
    // DIAERESIS
    $string = str_replace("\250", '&#168;', $string);
    // LATIN CAPITAL LETTER S WITH CARON
    $string = str_replace("\251", '&#352;', $string);
    // LATIN CAPITAL LETTER S WITH CEDILLA
    $string = str_replace("\252", '&#350;', $string);
    // LATIN CAPITAL LETTER T WITH CARON
    $string = str_replace("\253", '&#356;', $string);
    // LATIN CAPITAL LETTER Z WITH ACUTE
    $string = str_replace("\254", '&#377;', $string);
    // SOFT HYPHEN
    $string = str_replace("\255", '&#173;', $string);
    // LATIN CAPITAL LETTER Z WITH CARON
    $string = str_replace("\256", '&#381;', $string);
    // LATIN CAPITAL LETTER Z WITH DOT ABOVE
    $string = str_replace("\257", '&#379;', $string);
    // DEGREE SIGN
    $string = str_replace("\260", '&#176;', $string);
    // LATIN SMALL LETTER A WITH OGONEK
    $string = str_replace("\261", '&#261;', $string);
    // OGONEK
    $string = str_replace("\262", '&#731;', $string);
    // LATIN SMALL LETTER L WITH STROKE
    $string = str_replace("\263", '&#322;', $string);
    // ACUTE ACCENT
    $string = str_replace("\264", '&#180;', $string);
    // LATIN SMALL LETTER L WITH CARON
    $string = str_replace("\265", '&#318;', $string);
    // LATIN SMALL LETTER S WITH ACUTE
    $string = str_replace("\266", '&#347;', $string);
    // CARON
    $string = str_replace("\267", '&#711;', $string);
    // CEDILLA
    $string = str_replace("\270", '&#184;', $string);
    // LATIN SMALL LETTER S WITH CARON
    $string = str_replace("\271", '&#353;', $string);
    // LATIN SMALL LETTER S WITH CEDILLA
    $string = str_replace("\272", '&#351;', $string);
    // LATIN SMALL LETTER T WITH CARON
    $string = str_replace("\273", '&#357;', $string);
    // LATIN SMALL LETTER Z WITH ACUTE
    $string = str_replace("\274", '&#378;', $string);
    // DOUBLE ACUTE ACCENT
    $string = str_replace("\275", '&#733;', $string);
    // LATIN SMALL LETTER Z WITH CARON
    $string = str_replace("\276", '&#382;', $string);
    // LATIN SMALL LETTER Z WITH DOT ABOVE
    $string = str_replace("\277", '&#380;', $string);
    // LATIN CAPITAL LETTER R WITH ACUTE
    $string = str_replace("\300", '&#340;', $string);
    // LATIN CAPITAL LETTER A WITH ACUTE
    $string = str_replace("\301", '&#193;', $string);
    // LATIN CAPITAL LETTER A WITH CIRCUMFLEX
    $string = str_replace("\302", '&#194;', $string);
    // LATIN CAPITAL LETTER A WITH BREVE
    $string = str_replace("\303", '&#258;', $string);
    // LATIN CAPITAL LETTER A WITH DIAERESIS
    $string = str_replace("\304", '&#196;', $string);
    // LATIN CAPITAL LETTER L WITH ACUTE
    $string = str_replace("\305", '&#313;', $string);
    // LATIN CAPITAL LETTER C WITH ACUTE
    $string = str_replace("\306", '&#262;', $string);
    // LATIN CAPITAL LETTER C WITH CEDILLA
    $string = str_replace("\307", '&#199;', $string);
    // LATIN CAPITAL LETTER C WITH CARON
    $string = str_replace("\310", '&#268;', $string);
    // LATIN CAPITAL LETTER E WITH ACUTE
    $string = str_replace("\311", '&#201;', $string);
    // LATIN CAPITAL LETTER E WITH OGONEK
    $string = str_replace("\312", '&#280;', $string);
    // LATIN CAPITAL LETTER E WITH DIAERESIS
    $string = str_replace("\313", '&#203;', $string);
    // LATIN CAPITAL LETTER E WITH CARON
    $string = str_replace("\314", '&#282;', $string);
    // LATIN CAPITAL LETTER I WITH ACUTE
    $string = str_replace("\315", '&#205;', $string);
    // LATIN CAPITAL LETTER I WITH CIRCUMFLEX
    $string = str_replace("\316", '&#206;', $string);
    // LATIN CAPITAL LETTER D WITH CARON
    $string = str_replace("\317", '&#270;', $string);
    // LATIN CAPITAL LETTER D WITH STROKE
    $string = str_replace("\320", '&#272;', $string);
    // LATIN CAPITAL LETTER N WITH ACUTE
    $string = str_replace("\321", '&#323;', $string);
    // LATIN CAPITAL LETTER N WITH CARON
    $string = str_replace("\322", '&#327;', $string);
    // LATIN CAPITAL LETTER O WITH ACUTE
    $string = str_replace("\323", '&#211;', $string);
    // LATIN CAPITAL LETTER O WITH CIRCUMFLEX
    $string = str_replace("\324", '&#212;', $string);
    // LATIN CAPITAL LETTER O WITH DOUBLE ACUTE
    $string = str_replace("\325", '&#336;', $string);
    // LATIN CAPITAL LETTER O WITH DIAERESIS
    $string = str_replace("\326", '&#214;', $string);
    // MULTIPLICATION SIGN
    $string = str_replace("\327", '&#215;', $string);
    // LATIN CAPITAL LETTER R WITH CARON
    $string = str_replace("\330", '&#344;', $string);
    // LATIN CAPITAL LETTER U WITH RING ABOVE
    $string = str_replace("\331", '&#366;', $string);
    // LATIN CAPITAL LETTER U WITH ACUTE
    $string = str_replace("\332", '&#218;', $string);
    // LATIN CAPITAL LETTER U WITH DOUBLE ACUTE
    $string = str_replace("\333", '&#368;', $string);
    // LATIN CAPITAL LETTER U WITH DIAERESIS
    $string = str_replace("\334", '&#220;', $string);
    // LATIN CAPITAL LETTER Y WITH ACUTE
    $string = str_replace("\335", '&#221;', $string);
    // LATIN CAPITAL LETTER T WITH CEDILLA
    $string = str_replace("\336", '&#354;', $string);
    // LATIN SMALL LETTER SHARP S
    $string = str_replace("\337", '&#223;', $string);
    // LATIN SMALL LETTER R WITH ACUTE
    $string = str_replace("\340", '&#341;', $string);
    // LATIN SMALL LETTER A WITH ACUTE
    $string = str_replace("\341", '&#225;', $string);
    // LATIN SMALL LETTER A WITH CIRCUMFLEX
    $string = str_replace("\342", '&#226;', $string);
    // LATIN SMALL LETTER A WITH BREVE
    $string = str_replace("\343", '&#259;', $string);
    // LATIN SMALL LETTER A WITH DIAERESIS
    $string = str_replace("\344", '&#228;', $string);
    // LATIN SMALL LETTER L WITH ACUTE
    $string = str_replace("\345", '&#314;', $string);
    // LATIN SMALL LETTER C WITH ACUTE
    $string = str_replace("\346", '&#263;', $string);
    // LATIN SMALL LETTER C WITH CEDILLA
    $string = str_replace("\347", '&#231;', $string);
    // LATIN SMALL LETTER C WITH CARON
    $string = str_replace("\350", '&#269;', $string);
    // LATIN SMALL LETTER E WITH ACUTE
    $string = str_replace("\351", '&#233;', $string);
    // LATIN SMALL LETTER E WITH OGONEK
    $string = str_replace("\352", '&#281;', $string);
    // LATIN SMALL LETTER E WITH DIAERESIS
    $string = str_replace("\353", '&#235;', $string);
    // LATIN SMALL LETTER E WITH CARON
    $string = str_replace("\354", '&#283;', $string);
    // LATIN SMALL LETTER I WITH ACUTE
    $string = str_replace("\355", '&#237;', $string);
    // LATIN SMALL LETTER I WITH CIRCUMFLEX
    $string = str_replace("\356", '&#238;', $string);
    // LATIN SMALL LETTER D WITH CARON
    $string = str_replace("\357", '&#271;', $string);
    // LATIN SMALL LETTER D WITH STROKE
    $string = str_replace("\360", '&#273;', $string);
    // LATIN SMALL LETTER N WITH ACUTE
    $string = str_replace("\361", '&#324;', $string);
    // LATIN SMALL LETTER N WITH CARON
    $string = str_replace("\362", '&#328;', $string);
    // LATIN SMALL LETTER O WITH ACUTE
    $string = str_replace("\363", '&#243;', $string);
    // LATIN SMALL LETTER O WITH CIRCUMFLEX
    $string = str_replace("\364", '&#244;', $string);
    // LATIN SMALL LETTER O WITH DOUBLE ACUTE
    $string = str_replace("\365", '&#337;', $string);
    // LATIN SMALL LETTER O WITH DIAERESIS
    $string = str_replace("\366", '&#246;', $string);
    // DIVISION SIGN
    $string = str_replace("\367", '&#247;', $string);
    // LATIN SMALL LETTER R WITH CARON
    $string = str_replace("\370", '&#345;', $string);
    // LATIN SMALL LETTER U WITH RING ABOVE
    $string = str_replace("\371", '&#367;', $string);
    // LATIN SMALL LETTER U WITH ACUTE
    $string = str_replace("\372", '&#250;', $string);
    // LATIN SMALL LETTER U WITH DOUBLE ACUTE
    $string = str_replace("\373", '&#369;', $string);
    // LATIN SMALL LETTER U WITH DIAERESIS
    $string = str_replace("\374", '&#252;', $string);
    // LATIN SMALL LETTER Y WITH ACUTE
    $string = str_replace("\375", '&#253;', $string);
    // LATIN SMALL LETTER T WITH CEDILLA
    $string = str_replace("\376", '&#355;', $string);
    // DOT ABOVE
    $string = str_replace("\377", '&#729;', $string);

    return $string;
}

/* iso-8859-7 is Greek. */
function charset_decode_iso_8859_7 ($string) {
    global $default_charset;

    if (strtolower($default_charset) == 'iso-8859-7') {
        return $string;
    }

    /* Only do the slow convert if there are 8-bit characters */
    if (!ereg("[\200-\377]", $string)) {
        return $string;
    }

    /* Some diverse characters in the beginning */
    $string = str_replace("\240", '&#160;', $string);
    $string = str_replace("\241", '&#8216;', $string);
    $string = str_replace("\242", '&#8217;', $string);
    $string = str_replace("\243", '&#163;', $string);
    $string = str_replace("\246", '&#166;', $string);
    $string = str_replace("\247", '&#167;', $string);
    $string = str_replace("\250", '&#168;', $string);
    $string = str_replace("\251", '&#169;', $string);
    $string = str_replace("\253", '&#171;', $string);
    $string = str_replace("\254", '&#172;', $string);
    $string = str_replace("\255", '&#173;', $string);
    $string = str_replace("\257", '&#8213;', $string);
    $string = str_replace("\260", '&#176;', $string);
    $string = str_replace("\261", '&#177;', $string);
    $string = str_replace("\262", '&#178;', $string);
    $string = str_replace("\263", '&#179;', $string);

    /* Horizontal bar (parentheki pavla) */
    $string = str_replace ("\257", '&#8213;', $string);

    /*
     * ISO-8859-7 characters from 11/04 (0xB4) to 11/06 (0xB6)
     * These are Unicode 900-902
     */
    $string = preg_replace("/([\264-\266])/","'&#' . (ord(\\1)+720)",$string);
    
    /* 11/07 (0xB7) Middle dot is the same in iso-8859-1 */
    $string = str_replace("\267", '&#183;', $string);

    /*
     * ISO-8859-7 characters from 11/08 (0xB8) to 11/10 (0xBA)
     * These are Unicode 900-902
     */
    $string = preg_replace("/([\270-\272])/","'&#' . (ord(\\1)+720)",$string);

    /*
     * 11/11 (0xBB) Right angle quotation mark is the same as in
     * iso-8859-1
     */
    $string = str_replace("\273", '&#187;', $string);

    /* And now the rest of the charset */
    $string = preg_replace("/([\274-\376])/","'&#' . (ord(\\1)+720)",$string);

    return $string;
}

/*
 * iso-8859-15 is Latin 9 and has very much the same use as Latin 1
 * but has the Euro symbol and some characters needed for French.
 */
function charset_decode_iso_8859_15 ($string) {
    // Euro sign
    $string = str_replace ("\244", '&#8364;', $string);
    // Latin capital letter S with caron
    $string = str_replace ("\246", '&#352;', $string);
    // Latin small letter s with caron
    $string = str_replace ("\250", '&#353;', $string);
    // Latin capital letter Z with caron
    $string = str_replace ("\264", '&#381;', $string);
    // Latin small letter z with caron
    $string = str_replace ("\270", '&#382;', $string);
    // Latin capital ligature OE
    $string = str_replace ("\274", '&#338;', $string);
    // Latin small ligature oe
    $string = str_replace ("\275", '&#339;', $string);
    // Latin capital letter Y with diaeresis
    $string = str_replace ("\276", '&#376;', $string);

    return (charset_decode_iso_8859_1($string));
}

/* ISO-8859-5 is Cyrillic */
function charset_decode_iso_8859_5 ($string) {
    // Convert to KOI8-R, then return this decoded.
    $string = convert_cyr_string($string, 'i', 'k');
    return charset_decode_koi8r($string);
}

/* Remove all 8 bit characters from all other ISO-8859 character sets */
function charset_decode_iso_8859_default ($string) {
    return (strtr($string, "\240\241\242\243\244\245\246\247".
                    "\250\251\252\253\254\255\256\257".
                    "\260\261\262\263\264\265\266\267".
                    "\270\271\272\273\274\275\276\277".
                    "\300\301\302\303\304\305\306\307".
                    "\310\311\312\313\314\315\316\317".
                    "\320\321\322\323\324\325\326\327".
                    "\330\331\332\333\334\335\336\337".
                    "\340\341\342\343\344\345\346\347".
                    "\350\351\352\353\354\355\356\357".
                    "\360\361\362\363\364\365\366\367".
                    "\370\371\372\373\374\375\376\377",
                    "????????????????????????????????????????".
                    "????????????????????????????????????????".
                    "????????????????????????????????????????".
                    "????????"));

}

/*
 * This is the same as ISO-646-NO and is used by some
 * Microsoft programs when sending Norwegian characters
 */
function charset_decode_ns_4551_1 ($string) {
    /*
     * These characters are:
     * Latin capital letter AE
     * Latin capital letter O with stroke
     * Latin capital letter A with ring above
     * and the same as small letters
     */
    return strtr ($string, "[\\]{|}", "ÆØÅæøå");
}

/*
 * KOI8-R is used to encode Russian mail (Cyrrilic). Defined in RFC
 * 1489.
 */
function charset_decode_koi8r ($string) {
    global $default_charset;

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

    /*
     * Convert to Unicode HTML entities.
     * This code is rather ineffective.
     */
    $string = str_replace("\200", '&#9472;', $string);
    $string = str_replace("\201", '&#9474;', $string);
    $string = str_replace("\202", '&#9484;', $string);
    $string = str_replace("\203", '&#9488;', $string);
    $string = str_replace("\204", '&#9492;', $string);
    $string = str_replace("\205", '&#9496;', $string);
    $string = str_replace("\206", '&#9500;', $string);
    $string = str_replace("\207", '&#9508;', $string);
    $string = str_replace("\210", '&#9516;', $string);
    $string = str_replace("\211", '&#9524;', $string);
    $string = str_replace("\212", '&#9532;', $string);
    $string = str_replace("\213", '&#9600;', $string);
    $string = str_replace("\214", '&#9604;', $string);
    $string = str_replace("\215", '&#9608;', $string);
    $string = str_replace("\216", '&#9612;', $string);
    $string = str_replace("\217", '&#9616;', $string);
    $string = str_replace("\220", '&#9617;', $string);
    $string = str_replace("\221", '&#9618;', $string);
    $string = str_replace("\222", '&#9619;', $string);
    $string = str_replace("\223", '&#8992;', $string);
    $string = str_replace("\224", '&#9632;', $string);
    $string = str_replace("\225", '&#8729;', $string);
    $string = str_replace("\226", '&#8730;', $string);
    $string = str_replace("\227", '&#8776;', $string);
    $string = str_replace("\230", '&#8804;', $string);
    $string = str_replace("\231", '&#8805;', $string);
    $string = str_replace("\232", '&#160;', $string);
    $string = str_replace("\233", '&#8993;', $string);
    $string = str_replace("\234", '&#176;', $string);
    $string = str_replace("\235", '&#178;', $string);
    $string = str_replace("\236", '&#183;', $string);
    $string = str_replace("\237", '&#247;', $string);
    $string = str_replace("\240", '&#9552;', $string);
    $string = str_replace("\241", '&#9553;', $string);
    $string = str_replace("\242", '&#9554;', $string);
    $string = str_replace("\243", '&#1105;', $string);
    $string = str_replace("\244", '&#9555;', $string);
    $string = str_replace("\245", '&#9556;', $string);
    $string = str_replace("\246", '&#9557;', $string);
    $string = str_replace("\247", '&#9558;', $string);
    $string = str_replace("\250", '&#9559;', $string);
    $string = str_replace("\251", '&#9560;', $string);
    $string = str_replace("\252", '&#9561;', $string);
    $string = str_replace("\253", '&#9562;', $string);
    $string = str_replace("\254", '&#9563;', $string);
    $string = str_replace("\255", '&#9564;', $string);
    $string = str_replace("\256", '&#9565;', $string);
    $string = str_replace("\257", '&#9566;', $string);
    $string = str_replace("\260", '&#9567;', $string);
    $string = str_replace("\261", '&#9568;', $string);
    $string = str_replace("\262", '&#9569;', $string);
    $string = str_replace("\263", '&#1025;', $string);
    $string = str_replace("\264", '&#9570;', $string);
    $string = str_replace("\265", '&#9571;', $string);
    $string = str_replace("\266", '&#9572;', $string);
    $string = str_replace("\267", '&#9573;', $string);
    $string = str_replace("\270", '&#9574;', $string);
    $string = str_replace("\271", '&#9575;', $string);
    $string = str_replace("\272", '&#9576;', $string);
    $string = str_replace("\273", '&#9577;', $string);
    $string = str_replace("\274", '&#9578;', $string);
    $string = str_replace("\275", '&#9579;', $string);
    $string = str_replace("\276", '&#9580;', $string);
    $string = str_replace("\277", '&#169;', $string);
    $string = str_replace("\300", '&#1102;', $string);
    $string = str_replace("\301", '&#1072;', $string);
    $string = str_replace("\302", '&#1073;', $string);
    $string = str_replace("\303", '&#1094;', $string);
    $string = str_replace("\304", '&#1076;', $string);
    $string = str_replace("\305", '&#1077;', $string);
    $string = str_replace("\306", '&#1092;', $string);
    $string = str_replace("\307", '&#1075;', $string);
    $string = str_replace("\310", '&#1093;', $string);
    $string = str_replace("\311", '&#1080;', $string);
    $string = str_replace("\312", '&#1081;', $string);
    $string = str_replace("\313", '&#1082;', $string);
    $string = str_replace("\314", '&#1083;', $string);
    $string = str_replace("\315", '&#1084;', $string);
    $string = str_replace("\316", '&#1085;', $string);
    $string = str_replace("\317", '&#1086;', $string);
    $string = str_replace("\320", '&#1087;', $string);
    $string = str_replace("\321", '&#1103;', $string);
    $string = str_replace("\322", '&#1088;', $string);
    $string = str_replace("\323", '&#1089;', $string);
    $string = str_replace("\324", '&#1090;', $string);
    $string = str_replace("\325", '&#1091;', $string);
    $string = str_replace("\326", '&#1078;', $string);
    $string = str_replace("\327", '&#1074;', $string);
    $string = str_replace("\330", '&#1100;', $string);
    $string = str_replace("\331", '&#1099;', $string);
    $string = str_replace("\332", '&#1079;', $string);
    $string = str_replace("\333", '&#1096;', $string);
    $string = str_replace("\334", '&#1101;', $string);
    $string = str_replace("\335", '&#1097;', $string);
    $string = str_replace("\336", '&#1095;', $string);
    $string = str_replace("\337", '&#1098;', $string);
    $string = str_replace("\340", '&#1070;', $string);
    $string = str_replace("\341", '&#1040;', $string);
    $string = str_replace("\342", '&#1041;', $string);
    $string = str_replace("\343", '&#1062;', $string);
    $string = str_replace("\344", '&#1044;', $string);
    $string = str_replace("\345", '&#1045;', $string);
    $string = str_replace("\346", '&#1060;', $string);
    $string = str_replace("\347", '&#1043;', $string);
    $string = str_replace("\350", '&#1061;', $string);
    $string = str_replace("\351", '&#1048;', $string);
    $string = str_replace("\352", '&#1049;', $string);
    $string = str_replace("\353", '&#1050;', $string);
    $string = str_replace("\354", '&#1051;', $string);
    $string = str_replace("\355", '&#1052;', $string);
    $string = str_replace("\356", '&#1053;', $string);
    $string = str_replace("\357", '&#1054;', $string);
    $string = str_replace("\360", '&#1055;', $string);
    $string = str_replace("\361", '&#1071;', $string);
    $string = str_replace("\362", '&#1056;', $string);
    $string = str_replace("\363", '&#1057;', $string);
    $string = str_replace("\364", '&#1058;', $string);
    $string = str_replace("\365", '&#1059;', $string);
    $string = str_replace("\366", '&#1046;', $string);
    $string = str_replace("\367", '&#1042;', $string);
    $string = str_replace("\370", '&#1068;', $string);
    $string = str_replace("\371", '&#1067;', $string);
    $string = str_replace("\372", '&#1047;', $string);
    $string = str_replace("\373", '&#1064;', $string);
    $string = str_replace("\374", '&#1069;', $string);
    $string = str_replace("\375", '&#1065;', $string);
    $string = str_replace("\376", '&#1063;', $string);
    $string = str_replace("\377", '&#1066;', $string);

    return $string;
}

/*
 * Set up the language to be output
 * if $do_search is true, then scan the browser information
 * for a possible language that we know
 */
function set_up_language($sm_language, $do_search = false) {

    static $SetupAlready = 0;
    global $HTTP_ACCEPT_LANGUAGE, $use_gettext, $languages,
           $squirrelmail_language, $squirrelmail_default_language,
           $sm_notAlias;

    if ($SetupAlready) {
        return;
    }
    $SetupAlready = TRUE;

    if ($do_search && ! $sm_language && isset($HTTP_ACCEPT_LANGUAGE)) {
        $sm_language = substr($HTTP_ACCEPT_LANGUAGE, 0, 2);
    }
    
    if (!$sm_language && isset($squirrelmail_default_language)) {
        $squirrelmail_language = $squirrelmail_default_language;
        $sm_language = $squirrelmail_default_language;
    }
    $sm_notAlias = $sm_language;
    while (isset($languages[$sm_notAlias]['ALIAS'])) {
        $sm_notAlias = $languages[$sm_notAlias]['ALIAS'];
    }

    if ( isset($sm_language) &&
         $use_gettext &&
         $sm_language != '' &&
         isset($languages[$sm_notAlias]['CHARSET']) ) {
        bindtextdomain( 'squirrelmail', '../locale/' );
        textdomain( 'squirrelmail' );
        if ( !ini_get('safe_mode') &&
             getenv( 'LC_ALL' ) != $sm_notAlias ) {
            putenv( "LC_ALL=$sm_notAlias" );
            putenv( "LANG=$sm_notAlias" );
            putenv( "LANGUAGE=$sm_notAlias" );
        }
        setlocale(LC_ALL, $sm_notAlias);
        $squirrelmail_language = $sm_notAlias;
        header( 'Content-Type: text/html; charset=' . $languages[$sm_notAlias]['CHARSET'] );
    }
}

function set_my_charset(){

    /*
     * There can be a $default_charset setting in the
     * config.php file, but the user may have a different language
     * selected for a user interface. This function checks the
     * language selected by the user and tags the outgoing messages
     * with the appropriate charset corresponding to the language
     * selection. This is "more right" (tm), than just stamping the
     * message blindly with the system-wide $default_charset.
     */
    global $data_dir, $username, $default_charset, $languages;

    $my_language = getPref($data_dir, $username, 'language');
    if (!$my_language) {
        return;
    }
    while (isset($languages[$my_language]['ALIAS'])) {
        $my_language = $languages[$my_language]['ALIAS'];
    }
    $my_charset = $languages[$my_language]['CHARSET'];
    if ($my_charset) {
        $default_charset = $my_charset;
    }
}

/* ------------------------------ main --------------------------- */

global $squirrelmail_language, $languages, $use_gettext;

if (! isset($squirrelmail_language)) {
    $squirrelmail_language = '';
}

/* This array specifies the available languages. */

// The glibc locale is ca_ES.

$languages['ca_ES']['NAME']    = 'Catalan';
$languages['ca_ES']['CHARSET'] = 'iso-8859-1';
$languages['ca']['ALIAS'] = 'ca_ES';

$languages['cs_CZ']['NAME']    = 'Czech';
$languages['cs_CZ']['CHARSET'] = 'iso-8859-2';
$languages['cs']['ALIAS']      = 'cs_CZ';

// Danish locale is da_DK.

$languages['da_DK']['NAME']    = 'Danish';
$languages['da_DK']['CHARSET'] = 'iso-8859-1';
$languages['da']['ALIAS'] = 'da_DK';

$languages['de_DE']['NAME']    = 'Deutsch';
$languages['de_DE']['CHARSET'] = 'iso-8859-1';
$languages['de']['ALIAS'] = 'de_DE';

// There is no en_EN! There is en_US, en_BR, en_AU, and so forth, 
// but who cares about !US, right? Right? :)

$languages['en_US']['NAME']    = 'English';
$languages['en_US']['CHARSET'] = 'iso-8859-1';
$languages['en']['ALIAS'] = 'en_US';

$languages['es_ES']['NAME']    = 'Spanish';
$languages['es_ES']['CHARSET'] = 'iso-8859-1';
$languages['es']['ALIAS'] = 'es_ES';

$languages['et_EE']['NAME']    = 'Estonian';
$languages['et_EE']['CHARSET'] = 'iso-8859-15';
$languages['et']['ALIAS'] = 'et_EE';

$languages['fi_FI']['NAME']    = 'Finnish';
$languages['fi_FI']['CHARSET'] = 'iso-8859-1';
$languages['fi']['ALIAS'] = 'fi_FI';

$languages['fr_FR']['NAME']    = 'French';
$languages['fr_FR']['CHARSET'] = 'iso-8859-1';
$languages['fr']['ALIAS'] = 'fr_FR';

$languages['hr_HR']['NAME']    = 'Croatian';
$languages['hr_HR']['CHARSET'] = 'iso-8859-2';
$languages['hr']['ALIAS'] = 'hr_HR';

$languages['hu_HU']['NAME']    = 'Hungarian';
$languages['hu_HU']['CHARSET'] = 'iso-8859-2';
$languages['hu']['ALIAS'] = 'hu_HU';

$languages['id_ID']['NAME']    = 'Indonesian';
$languages['id_ID']['CHARSET'] = 'iso-8859-1';
$languages['id']['ALIAS'] = 'id_ID';

$languages['is_IS']['NAME']    = 'Icelandic';
$languages['is_IS']['CHARSET'] = 'iso-8859-1';
$languages['is']['ALIAS'] = 'is_IS';

$languages['it_IT']['NAME']    = 'Italian';
$languages['it_IT']['CHARSET'] = 'iso-8859-1';
$languages['it']['ALIAS'] = 'it_IT';

$languages['ko_KR']['NAME']    = 'Korean';
$languages['ko_KR']['CHARSET'] = 'euc-KR';
$languages['ko']['ALIAS'] = 'ko_KR';

$languages['nl_NL']['NAME']    = 'Dutch';
$languages['nl_NL']['CHARSET'] = 'iso-8859-1';
$languages['nl']['ALIAS'] = 'nl_NL';

$languages['no_NO']['NAME']    = 'Norwegian (Bokm&aring;l)';
$languages['no_NO']['CHARSET'] = 'iso-8859-1';
$languages['no']['ALIAS'] = 'no_NO';
$languages['nn_NO']['NAME']    = 'Norwegian (Nynorsk)';
$languages['nn_NO']['CHARSET'] = 'iso-8859-1';

$languages['pl_PL']['NAME']    = 'Polish';
$languages['pl_PL']['CHARSET'] = 'iso-8859-2';
$languages['pl']['ALIAS'] = 'pl_PL';

$languages['pt_PT']['NAME'] = 'Portuguese (Portugal)';
$languages['pt_PT']['CHARSET'] = 'iso-8859-1';
$languages['pt_BR']['NAME']    = 'Portuguese (Brazil)';
$languages['pt_BR']['CHARSET'] = 'iso-8859-1';
$languages['pt']['ALIAS'] = 'pt_PT';

$languages['ru_RU']['NAME']    = 'Russian';
$languages['ru_RU']['CHARSET'] = 'koi8-r';
$languages['ru']['ALIAS'] = 'ru_RU';

$languages['sr_YU']['NAME']    = 'Serbian';
$languages['sr_YU']['CHARSET'] = 'iso-8859-2';
$languages['sr']['ALIAS'] = 'sr_YU';

$languages['sv_SE']['NAME']    = 'Swedish';
$languages['sv_SE']['CHARSET'] = 'iso-8859-1';
$languages['sv']['ALIAS'] = 'sv_SE';

$languages['tr_TR']['NAME']    = 'Turkish';
$languages['tr_TR']['CHARSET'] = 'iso-8859-9';
$languages['tr']['ALIAS'] = 'tr_TR';

$languages['zh_TW']['NAME']    = 'Taiwan';
$languages['zh_TW']['CHARSET'] = 'big5';
$languages['tw']['ALIAS'] = 'zh_TW';

/*
$languages['zh_TW']['NAME']    = 'Chinese';
$languages['zh_TW']['CHARSET'] = 'gb2312';
$languages['tw']['ALIAS'] = 'zh_CN';
*/

$languages['sk_SK']['NAME']     = 'Slovak';
$languages['sk_SK']['CHARSET']  = 'iso-8859-2';
$languages['sk']['ALIAS']       = 'sk_SK';

$languages['ro_RO']['NAME']    = 'Romanian';
$languages['ro_RO']['CHARSET'] = 'iso-8859-2';
$languages['ro']['ALIAS'] = 'ro_RO';

$languages['th_TH']['NAME']    = 'Thai';
$languages['th_TH']['CHARSET'] = 'tis-620';
$languages['th']['ALIAS'] = 'th_TH';

$languages['lt_LT']['NAME']    = 'Lithuanian';
$languages['lt_LT']['CHARSET'] = 'iso-8859-13';
$languages['lt']['ALIAS'] = 'lt_LT';

$languages['sl_SI']['NAME']    = 'Slovenian';
$languages['sl_SI']['CHARSET'] = 'iso-8859-2';
$languages['sl']['ALIAS'] = 'sl_SI';

$languages['bg_BG']['NAME']    = 'Bulgarian';
$languages['bg_BG']['CHARSET'] = 'windows-1251';
$languages['bg']['ALIAS'] = 'bg_BG';

/* Detect whether gettext is installed. */
$gettext_flags = 0;
if (function_exists('_')) {
    $gettext_flags += 1;
}
if (function_exists('bindtextdomain')) {
    $gettext_flags += 2;
}
if (function_exists('textdomain')) {
    $gettext_flags += 4;
}

/* If gettext is fully loaded, cool */
if ($gettext_flags == 7) {
    $use_gettext = true;
}
/* If we can fake gettext, try that */
elseif ($gettext_flags == 0) {
    $use_gettext = true;
    include_once($calpath .'gettext.php');
} else {
    /* Uh-ho.  A weird install */
    if (! $gettext_flags & 1) {
        function _($str) {
            return $str;
        }
    }
    if (! $gettext_flags & 2) {
        function bindtextdomain() {
            return;
        }
    }
    if (! $gettext_flags & 4) {
        function textdomain() {
            return;
        }
    }
}

?>
