functions/i18n.php

   1 <?
   2
   3 /**
   4  ** i18n.php
   5  **
   6  ** This file contains variuos functions that are needed to do
   7  ** internationalization of SquirrelMail.
   8  **
   9  ** Internally iso-8859-1 is used as character set. Other characters
  10  ** are encoded using Unicode entities according to HTML 4.0.
  11  **
  12  **/
  13
  14    $i18n_php = true;
  15
  16    // This array specifies the available languages.
  17    $languages[0]["NAME"] = "English";
  18    $languages[0]["CODE"] = "en";
  19    $languages[1]["NAME"] = "Norsk";
  20    $languages[1]["CODE"] = "no";
  21    $languages[2]["NAME"] = "Deutcsh";
  22    $languages[2]["CODE"] = "de";
  23    $languages[2]["NAME"] = "Russian KOI8-R";
  24    $languages[2]["CODE"] = "ru";
  25
  26    // Decodes a string to the internal encoding from the given charset
  27    function charset_decode ($charset, $string) {
  28       // All HTML special characters are 7 bit and can be replaced first
  29       $string = htmlspecialchars ($string);
  30
  31       $charset = strtolower($charset);
  32
  33       if (ereg("iso-8859-(.*)", $charset, $res)) {
  34          if ($res[1] == "1")
  35             return charset_decode_iso_8859_1 ($string);
  36          if ($res[1] == "7")
  37             return charset_decode_iso_8859_7 ($string);
  38          else if ($res[1] == "15")
  39             return charset_decode_iso_8859_15 ($string);
  40          else
  41             return charset_decode_iso_8859_default ($string);
  42       } else if ($charset == "ns_4551-1") {
  43          return charset_decode_ns_4551_1 ($string);
  44       } else if ($charset == "koi8-r") {
  45         return charset_decode_koi8r ($string);
  46       } else
  47          return $string;
  48    }
  49
  50    // iso-8859-1 is the same as Latin 1 and is normally used
  51    // in western europe.
  52    function charset_decode_iso_8859_1 ($string) {
  53       // This is only debug code as long as the internal
  54       // character set is iso-8859-1
  55
  56       // Latin small letter o with stroke
  57       $string = str_replace ("\370", "&#248;", $string);
  58
  59       return ($string);
  60    }
  61
  62    // iso-8859-7 is Greek.
  63    function charset_decode_iso_8859_7 ($string) {
  64       // Could not find Unicode equivalent of 0xA1 and 0xA2
  65       // 0xA4, 0xA5, 0xAA, 0xAE, 0xD2 and 0xFF should not be used
  66       $string = strtr($string, "\241\242\244\245\252\256\322\377",
  67                       "????????");
  68
  69       // Horizontal bar (parentheki pavla)
  70       while (ereg("\257", $string))
  71          $string = str_replace ("\257", "&#8213;", $string);
  72
  73       // ISO-8859-7 characters from 11/04 (0xB4) to 11/06 (0xB6)
  74       // These are Unicode 900-902
  75       while (ereg("([\264-\266])", $string, $res)) {
  76          $replace = "&#" . (ord($res[1])+720) . ";";
  77          $string = str_replace($res[1], $replace, $string);
  78       }
  79
  80       // 11/07 (0xB7) Middle dot is the same in iso-8859-1
  81
  82       // ISO-8859-7 characters from 11/08 (0xB8) to 11/10 (0xBA)
  83       // These are Unicode 900-902
  84       while (ereg("([\270-\272])", $string, $res)) {
  85          $replace = "&#" . (ord($res[1])+720) . ";";
  86          $string = str_replace($res[1], $replace, $string);
  87       }
  88
  89       // 11/11 (0xBB) Right angle quotation mark is the same as in
  90       // iso-8859-1
  91
  92       // And now the rest of the charset
  93       while (ereg("([\273-\376])", $string, $res)) {
  94          $replace = "&#" . (ord($res[1])+720) . ";";
  95          $string = str_replace($res[1], $replace, $string);
  96       }
  97
  98       return $string;
  99    }
 100
 101    // iso-8859-15 is Latin 15 and has very much the same use as Latin 1
 102    // but has the Euro symbol and some characters needed for French.
 103    function charset_decode_iso_8859_15 ($string) {
 104       // Euro sign
 105       $string = str_replace ("\244", "&#8364;", $string);
 106       // Latin capital letter S with caron
 107       $string = str_replace ("\244", "&#352;", $string);
 108       // Latin small letter s with caron
 109       $string = str_replace ("\250", "&#353;", $string);
 110       // Latin capital letter Z with caron
 111       $string = str_replace ("\264", "&#381;", $string);
 112       // Latin small letter z with caron
 113       $string = str_replace ("\270", "&#382;", $string);
 114       // Latin capital ligature OE
 115       $string = str_replace ("\274", "&#338;", $string);
 116       // Latin small ligature oe
 117       $string = str_replace ("\275", "&#339;", $string);
 118       // Latin capital letter Y with diaeresis
 119       $string = str_replace ("\276", "&#376;", $string);
 120
 121       return ($string);
 122    }
 123
 124    // ISO-8859-15 is Cyrillic
 125    function charset_decode_iso_8859_5 ($string) {
 126       // Convert to KOI8-R, then return this decoded.
 127       $string = convert_cyr_string($string, "i", "k");
 128       return charset_decode_koi8r($string);
 129    }
 130
 131    // Remove all 8 bit characters from all other ISO-8859 character sets
 132    function charset_decode_iso_8859_default ($string) {
 133       return (strtr($string, "\240\241\242\243\244\245\246\247".
 134                     "\250\251\252\253\254\255\256\257".
 135                     "\260\261\262\263\264\265\266\267".
 136                     "\270\271\272\273\274\275\276\277".
 137                     "\300\301\302\303\304\305\306\307".
 138                     "\310\311\312\313\314\315\316\317".
 139                     "\320\321\322\323\324\325\326\327".
 140                     "\330\331\332\333\334\335\336\337".
 141                     "\340\341\342\343\344\345\346\347".
 142                     "\350\351\352\353\354\355\356\357".
 143                     "\360\361\362\363\364\365\366\367".
 144                     "\370\371\372\373\374\375\376\377",
 145                     "????????????????????????????????????????".
 146                     "????????????????????????????????????????".
 147                     "????????????????????????????????????????".
 148                     "????????"));
 149
 150    }
 151
 152    // This is the same as ISO-646-NO and is used by some
 153    // Microsoft programs when sending Norwegian characters
 154    function charset_decode_ns_4551_1 ($string) {
 155       // These characters are:
 156       // Latin capital letter AE
 157       // Latin capital letter O with stroke
 158       // Latin capital letter A with ring above
 159       // and the same as small letters
 160       return strtr ($string, "[\\]{|}", "ÆØÅæøå");
 161    }
 162
 163    // KOI8-R is used to encode Russian mail (Cyrrilic). Defined in RFC
 164    // 1489.
 165    function charset_decode_koi8r ($string) {
 166       global $default_charset;
 167
 168       if ($default_charset == "koi8-r") {
 169          return $string;
 170       } else {
 171          // Convert to Unicode HTML entities.
 172          // This code is rather ineffective.
 173          $string = str_replace("\200", "&#9472;", $string);
 174          $string = str_replace("\201", "&#9474;", $string);
 175          $string = str_replace("\202", "&#9484;", $string);
 176          $string = str_replace("\203", "&#9488;", $string);
 177          $string = str_replace("\204", "&#9492;", $string);
 178          $string = str_replace("\205", "&#9496;", $string);
 179          $string = str_replace("\206", "&#9500;", $string);
 180          $string = str_replace("\207", "&#9508;", $string);
 181          $string = str_replace("\210", "&#9516;", $string);
 182          $string = str_replace("\211", "&#9524;", $string);
 183          $string = str_replace("\212", "&#9532;", $string);
 184          $string = str_replace("\213", "&#9600;", $string);
 185          $string = str_replace("\214", "&#9604;", $string);
 186          $string = str_replace("\215", "&#9608;", $string);
 187          $string = str_replace("\216", "&#9612;", $string);
 188          $string = str_replace("\217", "&#9616;", $string);
 189          $string = str_replace("\220", "&#9617;", $string);
 190          $string = str_replace("\221", "&#9618;", $string);
 191          $string = str_replace("\222", "&#9619;", $string);
 192          $string = str_replace("\223", "&#8992;", $string);
 193          $string = str_replace("\224", "&#9632;", $string);
 194          $string = str_replace("\225", "&#8729;", $string);
 195          $string = str_replace("\226", "&#8730;", $string);
 196          $string = str_replace("\227", "&#8776;", $string);
 197          $string = str_replace("\230", "&#8804;", $string);
 198          $string = str_replace("\231", "&#8805;", $string);
 199          $string = str_replace("\232", "&#160;", $string);
 200          $string = str_replace("\233", "&#8993;", $string);
 201          $string = str_replace("\234", "&#176;", $string);
 202          $string = str_replace("\235", "&#178;", $string);
 203          $string = str_replace("\236", "&#183;", $string);
 204          $string = str_replace("\237", "&#247;", $string);
 205          $string = str_replace("\240", "&#9552;", $string);
 206          $string = str_replace("\241", "&#9553;", $string);
 207          $string = str_replace("\242", "&#9554;", $string);
 208          $string = str_replace("\243", "&#1105;", $string);
 209          $string = str_replace("\244", "&#9555;", $string);
 210          $string = str_replace("\245", "&#9556;", $string);
 211          $string = str_replace("\246", "&#9557;", $string);
 212          $string = str_replace("\247", "&#9558;", $string);
 213          $string = str_replace("\250", "&#9559;", $string);
 214          $string = str_replace("\251", "&#9560;", $string);
 215          $string = str_replace("\252", "&#9561;", $string);
 216          $string = str_replace("\253", "&#9562;", $string);
 217          $string = str_replace("\254", "&#9563;", $string);
 218          $string = str_replace("\255", "&#9564;", $string);
 219          $string = str_replace("\256", "&#9565;", $string);
 220          $string = str_replace("\257", "&#9566;", $string);
 221          $string = str_replace("\260", "&#9567;", $string);
 222          $string = str_replace("\261", "&#9568;", $string);
 223          $string = str_replace("\262", "&#9569;", $string);
 224          $string = str_replace("\263", "&#1025;", $string);
 225          $string = str_replace("\264", "&#9570;", $string);
 226          $string = str_replace("\265", "&#9571;", $string);
 227          $string = str_replace("\266", "&#9572;", $string);
 228          $string = str_replace("\267", "&#9573;", $string);
 229          $string = str_replace("\270", "&#9574;", $string);
 230          $string = str_replace("\271", "&#9575;", $string);
 231          $string = str_replace("\272", "&#9576;", $string);
 232          $string = str_replace("\273", "&#9577;", $string);
 233          $string = str_replace("\274", "&#9578;", $string);
 234          $string = str_replace("\275", "&#9579;", $string);
 235          $string = str_replace("\276", "&#9580;", $string);
 236          $string = str_replace("\277", "&#169;", $string);
 237          $string = str_replace("\300", "&#1102;", $string);
 238          $string = str_replace("\301", "&#1072;", $string);
 239          $string = str_replace("\302", "&#1073;", $string);
 240          $string = str_replace("\303", "&#1094;", $string);
 241          $string = str_replace("\304", "&#1076;", $string);
 242          $string = str_replace("\305", "&#1077;", $string);
 243          $string = str_replace("\306", "&#1092;", $string);
 244          $string = str_replace("\307", "&#1075;", $string);
 245          $string = str_replace("\310", "&#1093;", $string);
 246          $string = str_replace("\311", "&#1080;", $string);
 247          $string = str_replace("\312", "&#1081;", $string);
 248          $string = str_replace("\313", "&#1082;", $string);
 249          $string = str_replace("\314", "&#1083;", $string);
 250          $string = str_replace("\315", "&#1084;", $string);
 251          $string = str_replace("\316", "&#1085;", $string);
 252          $string = str_replace("\317", "&#1086;", $string);
 253          $string = str_replace("\320", "&#1087;", $string);
 254          $string = str_replace("\321", "&#1103;", $string);
 255          $string = str_replace("\322", "&#1088;", $string);
 256          $string = str_replace("\323", "&#1089;", $string);
 257          $string = str_replace("\324", "&#1090;", $string);
 258          $string = str_replace("\325", "&#1091;", $string);
 259          $string = str_replace("\326", "&#1078;", $string);
 260          $string = str_replace("\327", "&#1074;", $string);
 261          $string = str_replace("\330", "&#1100;", $string);
 262          $string = str_replace("\331", "&#1099;", $string);
 263          $string = str_replace("\332", "&#1079;", $string);
 264          $string = str_replace("\333", "&#1096;", $string);
 265          $string = str_replace("\334", "&#1101;", $string);
 266          $string = str_replace("\335", "&#1097;", $string);
 267          $string = str_replace("\336", "&#1095;", $string);
 268          $string = str_replace("\337", "&#1098;", $string);
 269          $string = str_replace("\340", "&#1070;", $string);
 270          $string = str_replace("\341", "&#1040;", $string);
 271          $string = str_replace("\342", "&#1041;", $string);
 272          $string = str_replace("\343", "&#1062;", $string);
 273          $string = str_replace("\344", "&#1044;", $string);
 274          $string = str_replace("\345", "&#1045;", $string);
 275          $string = str_replace("\346", "&#1060;", $string);
 276          $string = str_replace("\347", "&#1043;", $string);
 277          $string = str_replace("\350", "&#1061;", $string);
 278          $string = str_replace("\351", "&#1048;", $string);
 279          $string = str_replace("\352", "&#1049;", $string);
 280          $string = str_replace("\353", "&#1050;", $string);
 281          $string = str_replace("\354", "&#1051;", $string);
 282          $string = str_replace("\355", "&#1052;", $string);
 283          $string = str_replace("\356", "&#1053;", $string);
 284          $string = str_replace("\357", "&#1054;", $string);
 285          $string = str_replace("\360", "&#1055;", $string);
 286          $string = str_replace("\361", "&#1071;", $string);
 287          $string = str_replace("\362", "&#1056;", $string);
 288          $string = str_replace("\363", "&#1057;", $string);
 289          $string = str_replace("\364", "&#1058;", $string);
 290          $string = str_replace("\365", "&#1059;", $string);
 291          $string = str_replace("\366", "&#1046;", $string);
 292          $string = str_replace("\367", "&#1042;", $string);
 293          $string = str_replace("\370", "&#1068;", $string);
 294          $string = str_replace("\371", "&#1067;", $string);
 295          $string = str_replace("\372", "&#1047;", $string);
 296          $string = str_replace("\373", "&#1064;", $string);
 297          $string = str_replace("\374", "&#1069;", $string);
 298          $string = str_replace("\375", "&#1065;", $string);
 299          $string = str_replace("\376", "&#1063;", $string);
 300          $string = str_replace("\377", "&#1066;", $string);
 301
 302          return $string;
 303       }
 304    }
 305
 306 ?>