functions/i18n.php

   1 <?php
   2
   3 /**
   4  ** i18n.php
   5  **
   6  ** This file contains variuos functions that are needed to do
   7  ** internationalization of SquirrelMail.
   8  **
   9  ** Internally the output character set is used. Other characters are
  10  ** 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["en"]["NAME"]    = "English";
  18    $languages["no"]["NAME"]    = "Norsk";
  19    $languages["no"]["CHARSET"] = "iso-8859-1";
  20    $languages["de"]["NAME"]    = "Deutsch";
  21    $languages["de"]["CHARSET"] = "iso-8859-1";
  22    $languages["ru"]["NAME"]    = "Russian KOI8-R";
  23    $languages["ru"]["CHARSET"] = "koi8-r";
  24    $languages["pl"]["NAME"]    = "Polish";
  25    $languages["pl"]["CHARSET"] = "iso-8859-2";
  26    $languages["sv"]["NAME"]    = "Swedish";
  27    $languages["sv"]["CHARSET"] = "iso-8859-1";
  28    $languages["nl"]["NAME"]    = "Dutch";
  29    $languages["nl"]["CHARSET"] = "iso-8859-1";
  30    $languages["pt_BR"]["NAME"] = "Portugese (Brazil)";
  31    $languages["pt_BR"]["CHARSET"] = "iso-8859-1";
  32
  33    // Decodes a string to the internal encoding from the given charset
  34    function charset_decode ($charset, $string) {
  35       global $debug_mime;
  36
  37       // All HTML special characters are 7 bit and can be replaced first
  38       $string = htmlspecialchars ($string);
  39
  40       $charset = strtolower($charset);
  41
  42       if ($debug_mime) $string = $charset.":".$string;
  43
  44       if (ereg("iso-8859-(.*)", $charset, $res)) {
  45          if ($res[1] == "1")
  46             return charset_decode_iso_8859_1 ($string);
  47          if ($res[1] == "7")
  48             return charset_decode_iso_8859_7 ($string);
  49          else if ($res[1] == "15")
  50             return charset_decode_iso_8859_15 ($string);
  51          else
  52             return charset_decode_iso_8859_default ($string);
  53       } else if ($charset == "ns_4551-1") {
  54          return charset_decode_ns_4551_1 ($string);
  55       } else if ($charset == "koi8-r") {
  56         return charset_decode_koi8r ($string);
  57       } else
  58          return "$string";
  59    }
  60
  61    // iso-8859-1 is the same as Latin 1 and is normally used
  62    // in western europe.
  63    function charset_decode_iso_8859_1 ($string) {
  64       global $default_charset;
  65
  66       if (strtolower($default_charset) == "iso-8859-1") {
  67          return $string;
  68       } else {
  69          // Only do the slow convert if there are 8-bit characters
  70          if (ereg("[\200-\377]", $string)) {
  71             $string = str_replace("\201", "&#129;", $string);
  72             $string = str_replace("\202", "&#130;", $string);
  73             $string = str_replace("\203", "&#131;", $string);
  74             $string = str_replace("\204", "&#132;", $string);
  75             $string = str_replace("\205", "&#133;", $string);
  76             $string = str_replace("\206", "&#134;", $string);
  77             $string = str_replace("\207", "&#135;", $string);
  78             $string = str_replace("\210", "&#136;", $string);
  79             $string = str_replace("\211", "&#137;", $string);
  80             $string = str_replace("\212", "&#138;", $string);
  81             $string = str_replace("\213", "&#139;", $string);
  82             $string = str_replace("\214", "&#140;", $string);
  83             $string = str_replace("\215", "&#141;", $string);
  84             $string = str_replace("\216", "&#142;", $string);
  85             $string = str_replace("\217", "&#143;", $string);
  86             $string = str_replace("\220", "&#144;", $string);
  87             $string = str_replace("\221", "&#145;", $string);
  88             $string = str_replace("\222", "&#146;", $string);
  89             $string = str_replace("\223", "&#147;", $string);
  90             $string = str_replace("\224", "&#148;", $string);
  91             $string = str_replace("\225", "&#149;", $string);
  92             $string = str_replace("\226", "&#150;", $string);
  93             $string = str_replace("\227", "&#151;", $string);
  94             $string = str_replace("\230", "&#152;", $string);
  95             $string = str_replace("\231", "&#153;", $string);
  96             $string = str_replace("\232", "&#154;", $string);
  97             $string = str_replace("\233", "&#155;", $string);
  98             $string = str_replace("\234", "&#156;", $string);
  99             $string = str_replace("\235", "&#157;", $string);
 100             $string = str_replace("\236", "&#158;", $string);
 101             $string = str_replace("\237", "&#159;", $string);
 102             $string = str_replace("\240", "&#160;", $string);
 103             $string = str_replace("\241", "&#161;", $string);
 104             $string = str_replace("\242", "&#162;", $string);
 105             $string = str_replace("\243", "&#163;", $string);
 106             $string = str_replace("\244", "&#164;", $string);
 107             $string = str_replace("\245", "&#165;", $string);
 108             $string = str_replace("\246", "&#166;", $string);
 109             $string = str_replace("\247", "&#167;", $string);
 110             $string = str_replace("\250", "&#168;", $string);
 111             $string = str_replace("\251", "&#169;", $string);
 112             $string = str_replace("\252", "&#170;", $string);
 113             $string = str_replace("\253", "&#171;", $string);
 114             $string = str_replace("\254", "&#172;", $string);
 115             $string = str_replace("\255", "&#173;", $string);
 116             $string = str_replace("\256", "&#174;", $string);
 117             $string = str_replace("\257", "&#175;", $string);
 118             $string = str_replace("\260", "&#176;", $string);
 119             $string = str_replace("\261", "&#177;", $string);
 120             $string = str_replace("\262", "&#178;", $string);
 121             $string = str_replace("\263", "&#179;", $string);
 122             $string = str_replace("\264", "&#180;", $string);
 123             $string = str_replace("\265", "&#181;", $string);
 124             $string = str_replace("\266", "&#182;", $string);
 125             $string = str_replace("\267", "&#183;", $string);
 126             $string = str_replace("\270", "&#184;", $string);
 127             $string = str_replace("\271", "&#185;", $string);
 128             $string = str_replace("\272", "&#186;", $string);
 129             $string = str_replace("\273", "&#187;", $string);
 130             $string = str_replace("\274", "&#188;", $string);
 131             $string = str_replace("\275", "&#189;", $string);
 132             $string = str_replace("\276", "&#190;", $string);
 133             $string = str_replace("\277", "&#191;", $string);
 134             $string = str_replace("\300", "&#192;", $string);
 135             $string = str_replace("\301", "&#193;", $string);
 136             $string = str_replace("\302", "&#194;", $string);
 137             $string = str_replace("\303", "&#195;", $string);
 138             $string = str_replace("\304", "&#196;", $string);
 139             $string = str_replace("\305", "&#197;", $string);
 140             $string = str_replace("\306", "&#198;", $string);
 141             $string = str_replace("\307", "&#199;", $string);
 142             $string = str_replace("\310", "&#200;", $string);
 143             $string = str_replace("\311", "&#201;", $string);
 144             $string = str_replace("\312", "&#202;", $string);
 145             $string = str_replace("\313", "&#203;", $string);
 146             $string = str_replace("\314", "&#204;", $string);
 147             $string = str_replace("\315", "&#205;", $string);
 148             $string = str_replace("\316", "&#206;", $string);
 149             $string = str_replace("\317", "&#207;", $string);
 150             $string = str_replace("\320", "&#208;", $string);
 151             $string = str_replace("\321", "&#209;", $string);
 152             $string = str_replace("\322", "&#210;", $string);
 153             $string = str_replace("\323", "&#211;", $string);
 154             $string = str_replace("\324", "&#212;", $string);
 155             $string = str_replace("\325", "&#213;", $string);
 156             $string = str_replace("\326", "&#214;", $string);
 157             $string = str_replace("\327", "&#215;", $string);
 158             $string = str_replace("\330", "&#216;", $string);
 159             $string = str_replace("\331", "&#217;", $string);
 160             $string = str_replace("\332", "&#218;", $string);
 161             $string = str_replace("\333", "&#219;", $string);
 162             $string = str_replace("\334", "&#220;", $string);
 163             $string = str_replace("\335", "&#221;", $string);
 164             $string = str_replace("\336", "&#222;", $string);
 165             $string = str_replace("\337", "&#223;", $string);
 166             $string = str_replace("\340", "&#224;", $string);
 167             $string = str_replace("\341", "&#225;", $string);
 168             $string = str_replace("\342", "&#226;", $string);
 169             $string = str_replace("\343", "&#227;", $string);
 170             $string = str_replace("\344", "&#228;", $string);
 171             $string = str_replace("\345", "&#229;", $string);
 172             $string = str_replace("\346", "&#230;", $string);
 173             $string = str_replace("\347", "&#231;", $string);
 174             $string = str_replace("\350", "&#232;", $string);
 175             $string = str_replace("\351", "&#233;", $string);
 176             $string = str_replace("\352", "&#234;", $string);
 177             $string = str_replace("\353", "&#235;", $string);
 178             $string = str_replace("\354", "&#236;", $string);
 179             $string = str_replace("\355", "&#237;", $string);
 180             $string = str_replace("\356", "&#238;", $string);
 181             $string = str_replace("\357", "&#239;", $string);
 182             $string = str_replace("\360", "&#240;", $string);
 183             $string = str_replace("\361", "&#241;", $string);
 184             $string = str_replace("\362", "&#242;", $string);
 185             $string = str_replace("\363", "&#243;", $string);
 186             $string = str_replace("\364", "&#244;", $string);
 187             $string = str_replace("\365", "&#245;", $string);
 188             $string = str_replace("\366", "&#246;", $string);
 189             $string = str_replace("\367", "&#247;", $string);
 190             $string = str_replace("\370", "&#248;", $string);
 191             $string = str_replace("\371", "&#249;", $string);
 192             $string = str_replace("\372", "&#250;", $string);
 193             $string = str_replace("\373", "&#251;", $string);
 194             $string = str_replace("\374", "&#252;", $string);
 195             $string = str_replace("\375", "&#253;", $string);
 196             $string = str_replace("\376", "&#254;", $string);
 197             $string = str_replace("\377", "&#255;", $string);
 198          }
 199       }
 200
 201       return ($string);
 202    }
 203
 204    // iso-8859-7 is Greek.
 205    function charset_decode_iso_8859_7 ($string) {
 206       global $default_charset;
 207
 208       if (strtolower($default_charset) == "iso-8859-7") {
 209          return $string;
 210       } else {
 211          // Only do the slow convert if there are 8-bit characters
 212          if (ereg("[\200-\377]", $string)) {
 213             // Some diverse characters in the beginning
 214             $string = str_replace("\240", "&#160;", $string);
 215             $string = str_replace("\241", "&#8216;", $string);
 216             $string = str_replace("\242", "&#8217;", $string);
 217             $string = str_replace("\243", "&#163;", $string);
 218             $string = str_replace("\246", "&#166;", $string);
 219             $string = str_replace("\247", "&#167;", $string);
 220             $string = str_replace("\250", "&#168;", $string);
 221             $string = str_replace("\251", "&#169;", $string);
 222             $string = str_replace("\253", "&#171;", $string);
 223             $string = str_replace("\254", "&#172;", $string);
 224             $string = str_replace("\255", "&#173;", $string);
 225             $string = str_replace("\257", "&#8213;", $string);
 226             $string = str_replace("\260", "&#176;", $string);
 227             $string = str_replace("\261", "&#177;", $string);
 228             $string = str_replace("\262", "&#178;", $string);
 229             $string = str_replace("\263", "&#179;", $string);
 230
 231          // Horizontal bar (parentheki pavla)
 232             $string = str_replace ("\257", "&#8213;", $string);
 233
 234             // ISO-8859-7 characters from 11/04 (0xB4) to 11/06 (0xB6)
 235             // These are Unicode 900-902
 236             while (ereg("([\264-\266])", $string, $res)) {
 237                $replace = "&#" . (ord($res[1])+720) . ";";
 238                $string = str_replace($res[1], $replace, $string);
 239             }
 240
 241             // 11/07 (0xB7) Middle dot is the same in iso-8859-1
 242             $string = str_replace("\267", "&#183;", $string);
 243
 244             // ISO-8859-7 characters from 11/08 (0xB8) to 11/10 (0xBA)
 245             // These are Unicode 900-902
 246             while (ereg("([\270-\272])", $string, $res)) {
 247                $replace = "&#" . (ord($res[1])+720) . ";";
 248                $string = str_replace($res[1], $replace, $string);
 249             }
 250
 251             // 11/11 (0xBB) Right angle quotation mark is the same as in
 252             // iso-8859-1
 253             $string = str_replace("\273", "&#187;", $string);
 254
 255          // And now the rest of the charset
 256             while (ereg("([\274-\376])", $string, $res)) {
 257                $replace = "&#" . (ord($res[1])+720) . ";";
 258                $string = str_replace($res[1], $replace, $string);
 259             }
 260          }
 261       }
 262
 263       return $string;
 264    }
 265
 266    // iso-8859-15 is Latin 15 and has very much the same use as Latin 1
 267    // but has the Euro symbol and some characters needed for French.
 268    function charset_decode_iso_8859_15 ($string) {
 269       // Euro sign
 270       $string = str_replace ("\244", "&#8364;", $string);
 271       // Latin capital letter S with caron
 272       $string = str_replace ("\244", "&#352;", $string);
 273       // Latin small letter s with caron
 274       $string = str_replace ("\250", "&#353;", $string);
 275       // Latin capital letter Z with caron
 276       $string = str_replace ("\264", "&#381;", $string);
 277       // Latin small letter z with caron
 278       $string = str_replace ("\270", "&#382;", $string);
 279       // Latin capital ligature OE
 280       $string = str_replace ("\274", "&#338;", $string);
 281       // Latin small ligature oe
 282       $string = str_replace ("\275", "&#339;", $string);
 283       // Latin capital letter Y with diaeresis
 284       $string = str_replace ("\276", "&#376;", $string);
 285
 286       return (charset_decode_iso_8859_1($string));
 287    }
 288
 289    // ISO-8859-15 is Cyrillic
 290    function charset_decode_iso_8859_5 ($string) {
 291       // Convert to KOI8-R, then return this decoded.
 292       $string = convert_cyr_string($string, "i", "k");
 293       return charset_decode_koi8r($string);
 294    }
 295
 296    // Remove all 8 bit characters from all other ISO-8859 character sets
 297    function charset_decode_iso_8859_default ($string) {
 298       return (strtr($string, "\240\241\242\243\244\245\246\247".
 299                     "\250\251\252\253\254\255\256\257".
 300                     "\260\261\262\263\264\265\266\267".
 301                     "\270\271\272\273\274\275\276\277".
 302                     "\300\301\302\303\304\305\306\307".
 303                     "\310\311\312\313\314\315\316\317".
 304                     "\320\321\322\323\324\325\326\327".
 305                     "\330\331\332\333\334\335\336\337".
 306                     "\340\341\342\343\344\345\346\347".
 307                     "\350\351\352\353\354\355\356\357".
 308                     "\360\361\362\363\364\365\366\367".
 309                     "\370\371\372\373\374\375\376\377",
 310                     "????????????????????????????????????????".
 311                     "????????????????????????????????????????".
 312                     "????????????????????????????????????????".
 313                     "????????"));
 314
 315    }
 316
 317    // This is the same as ISO-646-NO and is used by some
 318    // Microsoft programs when sending Norwegian characters
 319    function charset_decode_ns_4551_1 ($string) {
 320       // These characters are:
 321       // Latin capital letter AE
 322       // Latin capital letter O with stroke
 323       // Latin capital letter A with ring above
 324       // and the same as small letters
 325       return strtr ($string, "[\\]{|}", "ÆØÅæøå");
 326    }
 327
 328    // KOI8-R is used to encode Russian mail (Cyrrilic). Defined in RFC
 329    // 1489.
 330    function charset_decode_koi8r ($string) {
 331       global $default_charset;
 332
 333       if ($default_charset == "koi8-r") {
 334          return $string;
 335       } else {
 336          // Convert to Unicode HTML entities.
 337          // This code is rather ineffective.
 338          $string = str_replace("\200", "&#9472;", $string);
 339          $string = str_replace("\201", "&#9474;", $string);
 340          $string = str_replace("\202", "&#9484;", $string);
 341          $string = str_replace("\203", "&#9488;", $string);
 342          $string = str_replace("\204", "&#9492;", $string);
 343          $string = str_replace("\205", "&#9496;", $string);
 344          $string = str_replace("\206", "&#9500;", $string);
 345          $string = str_replace("\207", "&#9508;", $string);
 346          $string = str_replace("\210", "&#9516;", $string);
 347          $string = str_replace("\211", "&#9524;", $string);
 348          $string = str_replace("\212", "&#9532;", $string);
 349          $string = str_replace("\213", "&#9600;", $string);
 350          $string = str_replace("\214", "&#9604;", $string);
 351          $string = str_replace("\215", "&#9608;", $string);
 352          $string = str_replace("\216", "&#9612;", $string);
 353          $string = str_replace("\217", "&#9616;", $string);
 354          $string = str_replace("\220", "&#9617;", $string);
 355          $string = str_replace("\221", "&#9618;", $string);
 356          $string = str_replace("\222", "&#9619;", $string);
 357          $string = str_replace("\223", "&#8992;", $string);
 358          $string = str_replace("\224", "&#9632;", $string);
 359          $string = str_replace("\225", "&#8729;", $string);
 360          $string = str_replace("\226", "&#8730;", $string);
 361          $string = str_replace("\227", "&#8776;", $string);
 362          $string = str_replace("\230", "&#8804;", $string);
 363          $string = str_replace("\231", "&#8805;", $string);
 364          $string = str_replace("\232", "&#160;", $string);
 365          $string = str_replace("\233", "&#8993;", $string);
 366          $string = str_replace("\234", "&#176;", $string);
 367          $string = str_replace("\235", "&#178;", $string);
 368          $string = str_replace("\236", "&#183;", $string);
 369          $string = str_replace("\237", "&#247;", $string);
 370          $string = str_replace("\240", "&#9552;", $string);
 371          $string = str_replace("\241", "&#9553;", $string);
 372          $string = str_replace("\242", "&#9554;", $string);
 373          $string = str_replace("\243", "&#1105;", $string);
 374          $string = str_replace("\244", "&#9555;", $string);
 375          $string = str_replace("\245", "&#9556;", $string);
 376          $string = str_replace("\246", "&#9557;", $string);
 377          $string = str_replace("\247", "&#9558;", $string);
 378          $string = str_replace("\250", "&#9559;", $string);
 379          $string = str_replace("\251", "&#9560;", $string);
 380          $string = str_replace("\252", "&#9561;", $string);
 381          $string = str_replace("\253", "&#9562;", $string);
 382          $string = str_replace("\254", "&#9563;", $string);
 383          $string = str_replace("\255", "&#9564;", $string);
 384          $string = str_replace("\256", "&#9565;", $string);
 385          $string = str_replace("\257", "&#9566;", $string);
 386          $string = str_replace("\260", "&#9567;", $string);
 387          $string = str_replace("\261", "&#9568;", $string);
 388          $string = str_replace("\262", "&#9569;", $string);
 389          $string = str_replace("\263", "&#1025;", $string);
 390          $string = str_replace("\264", "&#9570;", $string);
 391          $string = str_replace("\265", "&#9571;", $string);
 392          $string = str_replace("\266", "&#9572;", $string);
 393          $string = str_replace("\267", "&#9573;", $string);
 394          $string = str_replace("\270", "&#9574;", $string);
 395          $string = str_replace("\271", "&#9575;", $string);
 396          $string = str_replace("\272", "&#9576;", $string);
 397          $string = str_replace("\273", "&#9577;", $string);
 398          $string = str_replace("\274", "&#9578;", $string);
 399          $string = str_replace("\275", "&#9579;", $string);
 400          $string = str_replace("\276", "&#9580;", $string);
 401          $string = str_replace("\277", "&#169;", $string);
 402          $string = str_replace("\300", "&#1102;", $string);
 403          $string = str_replace("\301", "&#1072;", $string);
 404          $string = str_replace("\302", "&#1073;", $string);
 405          $string = str_replace("\303", "&#1094;", $string);
 406          $string = str_replace("\304", "&#1076;", $string);
 407          $string = str_replace("\305", "&#1077;", $string);
 408          $string = str_replace("\306", "&#1092;", $string);
 409          $string = str_replace("\307", "&#1075;", $string);
 410          $string = str_replace("\310", "&#1093;", $string);
 411          $string = str_replace("\311", "&#1080;", $string);
 412          $string = str_replace("\312", "&#1081;", $string);
 413          $string = str_replace("\313", "&#1082;", $string);
 414          $string = str_replace("\314", "&#1083;", $string);
 415          $string = str_replace("\315", "&#1084;", $string);
 416          $string = str_replace("\316", "&#1085;", $string);
 417          $string = str_replace("\317", "&#1086;", $string);
 418          $string = str_replace("\320", "&#1087;", $string);
 419          $string = str_replace("\321", "&#1103;", $string);
 420          $string = str_replace("\322", "&#1088;", $string);
 421          $string = str_replace("\323", "&#1089;", $string);
 422          $string = str_replace("\324", "&#1090;", $string);
 423          $string = str_replace("\325", "&#1091;", $string);
 424          $string = str_replace("\326", "&#1078;", $string);
 425          $string = str_replace("\327", "&#1074;", $string);
 426          $string = str_replace("\330", "&#1100;", $string);
 427          $string = str_replace("\331", "&#1099;", $string);
 428          $string = str_replace("\332", "&#1079;", $string);
 429          $string = str_replace("\333", "&#1096;", $string);
 430          $string = str_replace("\334", "&#1101;", $string);
 431          $string = str_replace("\335", "&#1097;", $string);
 432          $string = str_replace("\336", "&#1095;", $string);
 433          $string = str_replace("\337", "&#1098;", $string);
 434          $string = str_replace("\340", "&#1070;", $string);
 435          $string = str_replace("\341", "&#1040;", $string);
 436          $string = str_replace("\342", "&#1041;", $string);
 437          $string = str_replace("\343", "&#1062;", $string);
 438          $string = str_replace("\344", "&#1044;", $string);
 439          $string = str_replace("\345", "&#1045;", $string);
 440          $string = str_replace("\346", "&#1060;", $string);
 441          $string = str_replace("\347", "&#1043;", $string);
 442          $string = str_replace("\350", "&#1061;", $string);
 443          $string = str_replace("\351", "&#1048;", $string);
 444          $string = str_replace("\352", "&#1049;", $string);
 445          $string = str_replace("\353", "&#1050;", $string);
 446          $string = str_replace("\354", "&#1051;", $string);
 447          $string = str_replace("\355", "&#1052;", $string);
 448          $string = str_replace("\356", "&#1053;", $string);
 449          $string = str_replace("\357", "&#1054;", $string);
 450          $string = str_replace("\360", "&#1055;", $string);
 451          $string = str_replace("\361", "&#1071;", $string);
 452          $string = str_replace("\362", "&#1056;", $string);
 453          $string = str_replace("\363", "&#1057;", $string);
 454          $string = str_replace("\364", "&#1058;", $string);
 455          $string = str_replace("\365", "&#1059;", $string);
 456          $string = str_replace("\366", "&#1046;", $string);
 457          $string = str_replace("\367", "&#1042;", $string);
 458          $string = str_replace("\370", "&#1068;", $string);
 459          $string = str_replace("\371", "&#1067;", $string);
 460          $string = str_replace("\372", "&#1047;", $string);
 461          $string = str_replace("\373", "&#1064;", $string);
 462          $string = str_replace("\374", "&#1069;", $string);
 463          $string = str_replace("\375", "&#1065;", $string);
 464          $string = str_replace("\376", "&#1063;", $string);
 465          $string = str_replace("\377", "&#1066;", $string);
 466
 467          return $string;
 468       }
 469    }
 470
 471 ?>