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    $languages[2]["CODE"] = "de";
  23
  24    // Decodes a string to the internal encoding from the given charset
  25    function charset_decode ($charset, $string) {
  26       // All HTML special characters are 7 bit and can be replaced first
  27       $string = htmlspecialchars ($string);
  28
  29       $charset = strtolower($charset);
  30
  31       if (ereg("iso-8859-(.*)", $charset, $res)) {
  32          if ($res[1] == "1")
  33             return charset_decode_iso_8859_1 ($string);
  34          if ($res[1] == "7")
  35             return charset_decode_iso_8859_7 ($string);
  36          else if ($res[1] == "15")
  37             return charset_decode_iso_8859_15 ($string);
  38          else
  39             return charset_decode_iso_8859_default ($string);
  40       } else if ($charset == "ns_4551-1") {
  41          return charset_decode_ns_4551_1 ($string);
  42       } else if ($charset == "koi8-r") {
  43         return charset_decode_koi8r ($string);
  44       } else
  45          return $string;
  46    }
  47
  48    // iso-8859-1 is the same as Latin 1 and is normally used
  49    // in western europe.
  50    function charset_decode_iso_8859_1 ($string) {
  51       // This is only debug code as long as the internal
  52       // character set is iso-8859-1
  53
  54       // Latin small letter o with stroke
  55       while (ereg("\370", $string))
  56          $string = ereg_replace ("\370", "&#248;", $string);
  57
  58       return ($string);
  59    }
  60
  61    // iso-8859-7 is Greek.
  62    function charset_decode_iso_8859_7 ($string) {
  63       // Could not find Unicode equivalent of 0xA1 and 0xA2
  64       // 0xA4, 0xA5, 0xAA, 0xAE, 0xD2 and 0xFF should not be used
  65       $string = strtr($string, "\241\242\244\245\252\256\322\377",
  66                       "????????");
  67
  68       // Horizontal bar (parentheki pavla)
  69       while (ereg("\257", $string))
  70          $string = ereg_replace ("\257", "&#8213;", $string);
  71
  72       // ISO-8859-7 characters from 11/04 (0xB4) to 11/06 (0xB6)
  73       // These are Unicode 900-902
  74       while (ereg("([\264-\266])", $string, $res)) {
  75          $replace = "&#" . (ord($res[1])+720) . ";";
  76          $string = ereg_replace($res[1], $replace, $string);
  77       }
  78
  79       // 11/07 (0xB7) Middle dot is the same in iso-8859-1
  80
  81       // ISO-8859-7 characters from 11/08 (0xB8) to 11/10 (0xBA)
  82       // These are Unicode 900-902
  83       while (ereg("([\270-\272])", $string, $res)) {
  84          $replace = "&#" . (ord($res[1])+720) . ";";
  85          $string = ereg_replace($res[1], $replace, $string);
  86       }
  87
  88       // 11/11 (0xBB) Right angle quotation mark is the same as in
  89       // iso-8859-1
  90
  91       // And now the rest of the charset
  92       while (ereg("([\273-\376])", $string, $res)) {
  93          $replace = "&#" . (ord($res[1])+720) . ";";
  94          $string = ereg_replace($res[1], $replace, $string);
  95       }
  96
  97       return $string;
  98    }
  99
 100    // iso-8859-15 is Latin 15 and has very much the same use as Latin 1
 101    // but has the Euro symbol and some characters needed for French.
 102    function charset_decode_iso_8859_15 ($string) {
 103       // Euro sign
 104       while (ereg("\244", $replace))
 105          $string = ereg_replace ("\244", "&#8364;", $string);
 106       // Latin capital letter S with caron
 107       while (ereg("\246", $string))
 108          $string = ereg_replace ("\244", "&#352;", $string);
 109       // Latin small letter s with caron
 110       while (ereg("\250", $string))
 111          $string = ereg_replace ("\250", "&#353;", $string);
 112       // Latin capital letter Z with caron
 113       while (ereg("\264", $string))
 114          $string = ereg_replace ("\264", "&#381;", $string);
 115       // Latin small letter z with caron
 116       while (ereg("\270", $string))
 117          $string = ereg_replace ("\270", "&#382;", $string);
 118       // Latin capital ligature OE
 119       while (ereg("\274", $string))
 120          $string = ereg_replace ("\274", "&#338;", $string);
 121       // Latin small ligature oe
 122       while (ereg("\275", $string))
 123          $string = ereg_replace ("\275", "&#339;", $string);
 124       // Latin capital letter Y with diaeresis
 125       while (ereg("\276", $string))
 126          $string = ereg_replace ("\276", "&#376;", $string);
 127
 128       return ($string);
 129    }
 130
 131    // ISO-8859-15 is Cyrillic
 132    function charset_decode_iso_8859_5 ($string) {
 133       // Not yet implemented.
 134    }
 135
 136    // Remove all 8 bit characters from all other ISO-8859 character sets
 137    function charset_decode_iso_8859_default ($string) {
 138       return (strtr($string, "\240\241\242\243\244\245\246\247".
 139                     "\250\251\252\253\254\255\256\257".
 140                     "\260\261\262\263\264\265\266\267".
 141                     "\270\271\272\273\274\275\276\277".
 142                     "\300\301\302\303\304\305\306\307".
 143                     "\310\311\312\313\314\315\316\317".
 144                     "\320\321\322\323\324\325\326\327".
 145                     "\330\331\332\333\334\335\336\337".
 146                     "\340\341\342\343\344\345\346\347".
 147                     "\350\351\352\353\354\355\356\357".
 148                     "\360\361\362\363\364\365\366\367".
 149                     "\370\371\372\373\374\375\376\377",
 150                     "????????????????????????????????????????".
 151                     "????????????????????????????????????????".
 152                     "????????????????????????????????????????".
 153                     "????????"));
 154
 155    }
 156
 157    // This is the same as ISO-646-NO and is used by some
 158    // Microsoft programs when sending Norwegian characters
 159    function charset_decode_ns_4551_1 ($string) {
 160       // These characters are:
 161       // Latin capital letter AE
 162       // Latin capital letter O with stroke
 163       // Latin capital letter A with ring above
 164       // and the same as small letters
 165       return strtr ($string, "[\\]{|}", "ÆØÅæøå");
 166    }
 167
 168    // KOI8-R is used to encode Russian mail (Cyrrilic). Defined in RFC
 169    // 1489.
 170    function charset_decode_koi8r ($string) {
 171       global $default_charset;
 172
 173       if ($default_charset == "koi8-r") {
 174          return $string;
 175       } else {
 176          // Convert to Unicode HTML entities.
 177          // This code is rather ineffective.
 178          $string = ereg_replace("\200", "&#9472;", $string);
 179          $string = ereg_replace("\201", "&#9474;", $string);
 180          $string = ereg_replace("\202", "&#9484;", $string);
 181          $string = ereg_replace("\203", "&#9488;", $string);
 182          $string = ereg_replace("\204", "&#9492;", $string);
 183          $string = ereg_replace("\205", "&#9496;", $string);
 184          $string = ereg_replace("\206", "&#9500;", $string);
 185          $string = ereg_replace("\207", "&#9508;", $string);
 186          $string = ereg_replace("\210", "&#9516;", $string);
 187          $string = ereg_replace("\211", "&#9524;", $string);
 188          $string = ereg_replace("\212", "&#9532;", $string);
 189          $string = ereg_replace("\213", "&#9600;", $string);
 190          $string = ereg_replace("\214", "&#9604;", $string);
 191          $string = ereg_replace("\215", "&#9608;", $string);
 192          $string = ereg_replace("\216", "&#9612;", $string);
 193          $string = ereg_replace("\217", "&#9616;", $string);
 194          $string = ereg_replace("\220", "&#9617;", $string);
 195          $string = ereg_replace("\221", "&#9618;", $string);
 196          $string = ereg_replace("\222", "&#9619;", $string);
 197          $string = ereg_replace("\223", "&#8992;", $string);
 198          $string = ereg_replace("\224", "&#9632;", $string);
 199          $string = ereg_replace("\225", "&#8729;", $string);
 200          $string = ereg_replace("\226", "&#8730;", $string);
 201          $string = ereg_replace("\227", "&#8776;", $string);
 202          $string = ereg_replace("\230", "&#8804;", $string);
 203          $string = ereg_replace("\231", "&#8805;", $string);
 204          $string = ereg_replace("\232", "&#160;", $string);
 205          $string = ereg_replace("\233", "&#8993;", $string);
 206          $string = ereg_replace("\234", "&#176;", $string);
 207          $string = ereg_replace("\235", "&#178;", $string);
 208          $string = ereg_replace("\236", "&#183;", $string);
 209          $string = ereg_replace("\237", "&#247;", $string);
 210          $string = ereg_replace("\240", "&#9552;", $string);
 211          $string = ereg_replace("\241", "&#9553;", $string);
 212          $string = ereg_replace("\242", "&#9554;", $string);
 213          $string = ereg_replace("\243", "&#1105;", $string);
 214          $string = ereg_replace("\244", "&#9555;", $string);
 215          $string = ereg_replace("\245", "&#9556;", $string);
 216          $string = ereg_replace("\246", "&#9557;", $string);
 217          $string = ereg_replace("\247", "&#9558;", $string);
 218          $string = ereg_replace("\250", "&#9559;", $string);
 219          $string = ereg_replace("\251", "&#9560;", $string);
 220          $string = ereg_replace("\252", "&#9561;", $string);
 221          $string = ereg_replace("\253", "&#9562;", $string);
 222          $string = ereg_replace("\254", "&#9563;", $string);
 223          $string = ereg_replace("\255", "&#9564;", $string);
 224          $string = ereg_replace("\256", "&#9565;", $string);
 225          $string = ereg_replace("\257", "&#9566;", $string);
 226          $string = ereg_replace("\260", "&#9567;", $string);
 227          $string = ereg_replace("\261", "&#9568;", $string);
 228          $string = ereg_replace("\262", "&#9569;", $string);
 229          $string = ereg_replace("\263", "&#1025;", $string);
 230          $string = ereg_replace("\264", "&#9570;", $string);
 231          $string = ereg_replace("\265", "&#9571;", $string);
 232          $string = ereg_replace("\266", "&#9572;", $string);
 233          $string = ereg_replace("\267", "&#9573;", $string);
 234          $string = ereg_replace("\270", "&#9574;", $string);
 235          $string = ereg_replace("\271", "&#9575;", $string);
 236          $string = ereg_replace("\272", "&#9576;", $string);
 237          $string = ereg_replace("\273", "&#9577;", $string);
 238          $string = ereg_replace("\274", "&#9578;", $string);
 239          $string = ereg_replace("\275", "&#9579;", $string);
 240          $string = ereg_replace("\276", "&#9580;", $string);
 241          $string = ereg_replace("\277", "&#169;", $string);
 242          $string = ereg_replace("\300", "&#1102;", $string);
 243          $string = ereg_replace("\301", "&#1072;", $string);
 244          $string = ereg_replace("\302", "&#1073;", $string);
 245          $string = ereg_replace("\303", "&#1094;", $string);
 246          $string = ereg_replace("\304", "&#1076;", $string);
 247          $string = ereg_replace("\305", "&#1077;", $string);
 248          $string = ereg_replace("\306", "&#1092;", $string);
 249          $string = ereg_replace("\307", "&#1075;", $string);
 250          $string = ereg_replace("\310", "&#1093;", $string);
 251          $string = ereg_replace("\311", "&#1080;", $string);
 252          $string = ereg_replace("\312", "&#1081;", $string);
 253          $string = ereg_replace("\313", "&#1082;", $string);
 254          $string = ereg_replace("\314", "&#1083;", $string);
 255          $string = ereg_replace("\315", "&#1084;", $string);
 256          $string = ereg_replace("\316", "&#1085;", $string);
 257          $string = ereg_replace("\317", "&#1086;", $string);
 258          $string = ereg_replace("\320", "&#1087;", $string);
 259          $string = ereg_replace("\321", "&#1103;", $string);
 260          $string = ereg_replace("\322", "&#1088;", $string);
 261          $string = ereg_replace("\323", "&#1089;", $string);
 262          $string = ereg_replace("\324", "&#1090;", $string);
 263          $string = ereg_replace("\325", "&#1091;", $string);
 264          $string = ereg_replace("\326", "&#1078;", $string);
 265          $string = ereg_replace("\327", "&#1074;", $string);
 266          $string = ereg_replace("\330", "&#1100;", $string);
 267          $string = ereg_replace("\331", "&#1099;", $string);
 268          $string = ereg_replace("\332", "&#1079;", $string);
 269          $string = ereg_replace("\333", "&#1096;", $string);
 270          $string = ereg_replace("\334", "&#1101;", $string);
 271          $string = ereg_replace("\335", "&#1097;", $string);
 272          $string = ereg_replace("\336", "&#1095;", $string);
 273          $string = ereg_replace("\337", "&#1098;", $string);
 274          $string = ereg_replace("\340", "&#1070;", $string);
 275          $string = ereg_replace("\341", "&#1040;", $string);
 276          $string = ereg_replace("\342", "&#1041;", $string);
 277          $string = ereg_replace("\343", "&#1062;", $string);
 278          $string = ereg_replace("\344", "&#1044;", $string);
 279          $string = ereg_replace("\345", "&#1045;", $string);
 280          $string = ereg_replace("\346", "&#1060;", $string);
 281          $string = ereg_replace("\347", "&#1043;", $string);
 282          $string = ereg_replace("\350", "&#1061;", $string);
 283          $string = ereg_replace("\351", "&#1048;", $string);
 284          $string = ereg_replace("\352", "&#1049;", $string);
 285          $string = ereg_replace("\353", "&#1050;", $string);
 286          $string = ereg_replace("\354", "&#1051;", $string);
 287          $string = ereg_replace("\355", "&#1052;", $string);
 288          $string = ereg_replace("\356", "&#1053;", $string);
 289          $string = ereg_replace("\357", "&#1054;", $string);
 290          $string = ereg_replace("\360", "&#1055;", $string);
 291          $string = ereg_replace("\361", "&#1071;", $string);
 292          $string = ereg_replace("\362", "&#1056;", $string);
 293          $string = ereg_replace("\363", "&#1057;", $string);
 294          $string = ereg_replace("\364", "&#1058;", $string);
 295          $string = ereg_replace("\365", "&#1059;", $string);
 296          $string = ereg_replace("\366", "&#1046;", $string);
 297          $string = ereg_replace("\367", "&#1042;", $string);
 298          $string = ereg_replace("\370", "&#1068;", $string);
 299          $string = ereg_replace("\371", "&#1067;", $string);
 300          $string = ereg_replace("\372", "&#1047;", $string);
 301          $string = ereg_replace("\373", "&#1064;", $string);
 302          $string = ereg_replace("\374", "&#1069;", $string);
 303          $string = ereg_replace("\375", "&#1065;", $string);
 304          $string = ereg_replace("\376", "&#1063;", $string);
 305          $string = ereg_replace("\377", "&#1066;", $string);
 306
 307          return $string;
 308       }
 309    }
 310
 311 ?>