Mercurial > judyates

     1 <?php

     2 // +----------------------------------------------------------------------+

     3 // | PHP version 5                                                        |

     4 // +----------------------------------------------------------------------+

     5 // | Copyright (c) 2002-2006 James Heinrich, Allan Hansen                 |

     6 // +----------------------------------------------------------------------+

     7 // | This source file is subject to version 2 of the GPL license,         |

     8 // | that is bundled with this package in the file license.txt and is     |

     9 // | available through the world-wide-web at the following url:           |

    10 // | http://www.gnu.org/copyleft/gpl.html                                 |

    11 // +----------------------------------------------------------------------+

    12 // | getID3() - http://getid3.sourceforge.net or http://www.getid3.org    |

    13 // +----------------------------------------------------------------------+

    14 // | Authors: James Heinrich <infoØgetid3*org>                            |

    15 // |          Allan Hansen <ahØartemis*dk>                                |

    16 // +----------------------------------------------------------------------+

    17 // | module.lib.iconv_replacement.php                                     |

    18 // | getID3() library file.                                               |

    19 // | dependencies: NONE, required by getid3.php if no iconv() present.    |

    20 // +----------------------------------------------------------------------+

    21 //

    22 // $Id: module.lib.iconv_replacement.php,v 1.4 2006/11/02 10:48:02 ah Exp $

    23 

    24 

    25 class getid3_iconv_replacement

    26 {

    27 

    28     public static function iconv($in_charset, $out_charset, $string) {

    29 

    30         if ($in_charset == $out_charset) {

    31             return $string;

    32         }

    33         

    34         static $supported_charsets = array (

    35             'ISO-8859-1'    => 'iso88591', 

    36             'UTF-8'         => 'utf8',

    37             'UTF-16BE'      => 'utf16be', 

    38             'UTF-16LE'      => 'utf16le', 

    39             'UTF-16'        => 'utf16'

    40         );

    41 

    42         // Convert

    43         $function_name = 'iconv_' . @$supported_charsets[$in_charset] . '_' . @$supported_charsets[$out_charset];

    44         

    45         if (is_callable(array('getid3_iconv_replacement', $function_name))) {

    46             return getid3_iconv_replacement::$function_name($string);

    47         }

    48         

    49         // Invalid charset used

    50         if (!@$supported_charsets[$in_charset]) {

    51             throw new getid3_exception('PHP does not have iconv() support - cannot use ' . $in_charset . ' charset.');

    52         }

    53         

    54         if (!@$supported_charsets[$out_charset]) {

    55             throw new getid3_exception('PHP does not have iconv() support - cannot use ' . $out_charset . ' charset.');

    56         }

    57     }

    58 

    59 

    60 

    61     public static function iconv_int_utf8($charval) {

    62         if ($charval < 128) {

    63             // 0bbbbbbb

    64             $newcharstring = chr($charval);

    65         } elseif ($charval < 2048) {

    66             // 110bbbbb 10bbbbbb

    67             $newcharstring  = chr(($charval >> 6) | 0xC0);

    68             $newcharstring .= chr(($charval & 0x3F) | 0x80);

    69         } elseif ($charval < 65536) {

    70             // 1110bbbb 10bbbbbb 10bbbbbb

    71             $newcharstring  = chr(($charval >> 12) | 0xE0);

    72             $newcharstring .= chr(($charval >>  6) | 0xC0);

    73             $newcharstring .= chr(($charval & 0x3F) | 0x80);

    74         } else {

    75             // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb

    76             $newcharstring  = chr(($charval >> 18) | 0xF0);

    77             $newcharstring .= chr(($charval >> 12) | 0xC0);

    78             $newcharstring .= chr(($charval >>  6) | 0xC0);

    79             $newcharstring .= chr(($charval & 0x3F) | 0x80);

    80         }

    81         return $newcharstring;

    82     }

    83 

    84 

    85 

    86     // ISO-8859-1 => UTF-8

    87     public static function iconv_iso88591_utf8($string, $bom=false) {

    88         if (function_exists('utf8_encode')) {

    89             return utf8_encode($string);

    90         }

    91         // utf8_encode() unavailable, use getID3()'s iconv() conversions (possibly PHP is compiled without XML support)

    92         $newcharstring = '';

    93         if ($bom) {

    94             $newcharstring .= "\xEF\xBB\xBF";

    95         }

    96         for ($i = 0; $i < strlen($string); $i++) {

    97             $charval = ord($string{$i});

    98             $newcharstring .= getid3_iconv_replacement::iconv_int_utf8($charval);

    99         }

   100         return $newcharstring;

   101     }

   102 

   103 

   104 

   105     // ISO-8859-1 => UTF-16BE

   106     public static function iconv_iso88591_utf16be($string, $bom=false) {

   107         $newcharstring = '';

   108         if ($bom) {

   109             $newcharstring .= "\xFE\xFF";

   110         }

   111         for ($i = 0; $i < strlen($string); $i++) {

   112             $newcharstring .= "\x00".$string{$i};

   113         }

   114         return $newcharstring;

   115     }

   116 

   117 

   118 

   119     // ISO-8859-1 => UTF-16LE

   120     public static function iconv_iso88591_utf16le($string, $bom=false) {

   121         $newcharstring = '';

   122         if ($bom) {

   123             $newcharstring .= "\xFF\xFE";

   124         }

   125         for ($i = 0; $i < strlen($string); $i++) {

   126             $newcharstring .= $string{$i}."\x00";

   127         }

   128         return $newcharstring;

   129     }

   130 

   131 

   132 

   133     // ISO-8859-1 => UTF-16

   134     public static function iconv_iso88591_utf16($string) {

   135         return getid3_lib::iconv_iso88591_utf16le($string, true);

   136     }

   137 

   138 

   139 

   140     // UTF-8 => ISO-8859-1

   141     public static function iconv_utf8_iso88591($string) {

   142         if (function_exists('utf8_decode')) {

   143             return utf8_decode($string);

   144         }

   145         // utf8_decode() unavailable, use getID3()'s iconv() conversions (possibly PHP is compiled without XML support)

   146         $newcharstring = '';

   147         $offset = 0;

   148         $stringlength = strlen($string);

   149         while ($offset < $stringlength) {

   150             if ((ord($string{$offset}) | 0x07) == 0xF7) {

   151                 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb

   152                 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &

   153                            ((ord($string{($offset + 1)}) & 0x3F) << 12) &

   154                            ((ord($string{($offset + 2)}) & 0x3F) <<  6) &

   155                             (ord($string{($offset + 3)}) & 0x3F);

   156                 $offset += 4;

   157             } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {

   158                 // 1110bbbb 10bbbbbb 10bbbbbb

   159                 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &

   160                            ((ord($string{($offset + 1)}) & 0x3F) <<  6) &

   161                             (ord($string{($offset + 2)}) & 0x3F);

   162                 $offset += 3;

   163             } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {

   164                 // 110bbbbb 10bbbbbb

   165                 $charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &

   166                             (ord($string{($offset + 1)}) & 0x3F);

   167                 $offset += 2;

   168             } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {

   169                 // 0bbbbbbb

   170                 $charval = ord($string{$offset});

   171                 $offset += 1;

   172             } else {

   173                 // error? throw some kind of warning here?

   174                 $charval = false;

   175                 $offset += 1;

   176             }

   177             if ($charval !== false) {

   178                 $newcharstring .= (($charval < 256) ? chr($charval) : '?');

   179             }

   180         }

   181         return $newcharstring;

   182     }

   183 

   184 

   185 

   186     // UTF-8 => UTF-16BE

   187     public static function iconv_utf8_utf16be($string, $bom=false) {

   188         $newcharstring = '';

   189         if ($bom) {

   190             $newcharstring .= "\xFE\xFF";

   191         }

   192         $offset = 0;

   193         $stringlength = strlen($string);

   194         while ($offset < $stringlength) {

   195             if ((ord($string{$offset}) | 0x07) == 0xF7) {

   196                 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb

   197                 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &

   198                            ((ord($string{($offset + 1)}) & 0x3F) << 12) &

   199                            ((ord($string{($offset + 2)}) & 0x3F) <<  6) &

   200                             (ord($string{($offset + 3)}) & 0x3F);

   201                 $offset += 4;

   202             } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {

   203                 // 1110bbbb 10bbbbbb 10bbbbbb

   204                 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &

   205                            ((ord($string{($offset + 1)}) & 0x3F) <<  6) &

   206                             (ord($string{($offset + 2)}) & 0x3F);

   207                 $offset += 3;

   208             } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {

   209                 // 110bbbbb 10bbbbbb

   210                 $charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &

   211                             (ord($string{($offset + 1)}) & 0x3F);

   212                 $offset += 2;

   213             } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {

   214                 // 0bbbbbbb

   215                 $charval = ord($string{$offset});

   216                 $offset += 1;

   217             } else {

   218                 // error? throw some kind of warning here?

   219                 $charval = false;

   220                 $offset += 1;

   221             }

   222             if ($charval !== false) {

   223                 $newcharstring .= (($charval < 65536) ? getid3_lib::BigEndian2String($charval, 2) : "\x00".'?');

   224             }

   225         }

   226         return $newcharstring;

   227     }

   228 

   229 

   230 

   231     // UTF-8 => UTF-16LE

   232     public static function iconv_utf8_utf16le($string, $bom=false) {

   233         $newcharstring = '';

   234         if ($bom) {

   235             $newcharstring .= "\xFF\xFE";

   236         }

   237         $offset = 0;

   238         $stringlength = strlen($string);

   239         while ($offset < $stringlength) {

   240             if ((ord($string{$offset}) | 0x07) == 0xF7) {

   241                 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb

   242                 $charval = ((ord($string{($offset + 0)}) & 0x07) << 18) &

   243                            ((ord($string{($offset + 1)}) & 0x3F) << 12) &

   244                            ((ord($string{($offset + 2)}) & 0x3F) <<  6) &

   245                             (ord($string{($offset + 3)}) & 0x3F);

   246                 $offset += 4;

   247             } elseif ((ord($string{$offset}) | 0x0F) == 0xEF) {

   248                 // 1110bbbb 10bbbbbb 10bbbbbb

   249                 $charval = ((ord($string{($offset + 0)}) & 0x0F) << 12) &

   250                            ((ord($string{($offset + 1)}) & 0x3F) <<  6) &

   251                             (ord($string{($offset + 2)}) & 0x3F);

   252                 $offset += 3;

   253             } elseif ((ord($string{$offset}) | 0x1F) == 0xDF) {

   254                 // 110bbbbb 10bbbbbb

   255                 $charval = ((ord($string{($offset + 0)}) & 0x1F) <<  6) &

   256                             (ord($string{($offset + 1)}) & 0x3F);

   257                 $offset += 2;

   258             } elseif ((ord($string{$offset}) | 0x7F) == 0x7F) {

   259                 // 0bbbbbbb

   260                 $charval = ord($string{$offset});

   261                 $offset += 1;

   262             } else {

   263                 // error? maybe throw some warning here?

   264                 $charval = false;

   265                 $offset += 1;

   266             }

   267             if ($charval !== false) {

   268                 $newcharstring .= (($charval < 65536) ? getid3_lib::LittleEndian2String($charval, 2) : '?'."\x00");

   269             }

   270         }

   271         return $newcharstring;

   272     }

   273 

   274     

   275     

   276     // UTF-8 => UTF-16

   277     public static function iconv_utf8_utf16($string) {

   278         return getid3_lib::iconv_utf8_utf16le($string, true);

   279     }

   280 

   281     

   282     

   283     // UTF-16BE => ISO-8859-1

   284     public static function iconv_utf16be_iso88591($string) {

   285         if (substr($string, 0, 2) == "\xFE\xFF") {

   286             // strip BOM

   287             $string = substr($string, 2);

   288         }

   289         $newcharstring = '';

   290         for ($i = 0; $i < strlen($string); $i += 2) {

   291             $charval = getid3_lib::BigEndian2Int(substr($string, $i, 2));

   292             $newcharstring .= (($charval < 256) ? chr($charval) : '?');

   293         }

   294         return $newcharstring;

   295     }

   296 

   297     

   298     

   299     // UTF-16BE => UTF-8

   300     public static function iconv_utf16be_utf8($string) {

   301         if (substr($string, 0, 2) == "\xFE\xFF") {

   302             // strip BOM

   303             $string = substr($string, 2);

   304         }

   305         $newcharstring = '';

   306         for ($i = 0; $i < strlen($string); $i += 2) {

   307             $charval = getid3_lib::BigEndian2Int(substr($string, $i, 2));

   308             $newcharstring .= getid3_iconv_replacement::iconv_int_utf8($charval);

   309         }

   310         return $newcharstring;

   311     }

   312     

   313     

   314     

   315     // UTF-16BE => UTF-16LE

   316     public static function iconv_utf16be_utf16le($string) {

   317         return getid3_iconv_replacement::iconv_utf8_utf16le(getid3_iconv_replacement::iconv_utf16be_utf8($string));

   318     }

   319     

   320     

   321     

   322     // UTF-16BE => UTF-16

   323     public static function iconv_utf16be_utf16($string) {

   324         return getid3_iconv_replacement::iconv_utf8_utf16(getid3_iconv_replacement::iconv_utf16be_utf8($string));

   325     }

   326     

   327     

   328     

   329     // UTF-16LE => ISO-8859-1

   330     public static function iconv_utf16le_iso88591($string) {

   331         if (substr($string, 0, 2) == "\xFF\xFE") {

   332             // strip BOM

   333             $string = substr($string, 2);

   334         }

   335         $newcharstring = '';

   336         for ($i = 0; $i < strlen($string); $i += 2) {

   337             $charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2));

   338             $newcharstring .= (($charval < 256) ? chr($charval) : '?');

   339         }

   340         return $newcharstring;

   341     }

   342 

   343     

   344     

   345     // UTF-16LE => UTF-8

   346     public static function iconv_utf16le_utf8($string) {

   347         if (substr($string, 0, 2) == "\xFF\xFE") {

   348             // strip BOM

   349             $string = substr($string, 2);

   350         }

   351         $newcharstring = '';

   352         for ($i = 0; $i < strlen($string); $i += 2) {

   353             $charval = getid3_lib::LittleEndian2Int(substr($string, $i, 2));

   354             $newcharstring .= getid3_iconv_replacement::iconv_int_utf8($charval);

   355         }

   356         return $newcharstring;

   357     }

   358 

   359     

   360     

   361     // UTF-16LE => UTF-16BE

   362     public static function iconv_utf16le_utf16be($string) {

   363         return getid3_iconv_replacement::iconv_utf8_utf16be(getid3_iconv_replacement::iconv_utf16le_utf8($string));

   364     }

   365     

   366     

   367     

   368     // UTF-16LE => UTF-16

   369     public static function iconv_utf16le_utf16($string) {

   370         return getid3_iconv_replacement::iconv_utf8_utf16(getid3_iconv_replacement::iconv_utf16le_utf8($string));

   371     }

   372     

   373     

   374     

   375     // UTF-16 => ISO-8859-1

   376     public static function iconv_utf16_iso88591($string) {

   377         $bom = substr($string, 0, 2);

   378         if ($bom == "\xFE\xFF") {

   379             return getid3_lib::iconv_utf16be_iso88591(substr($string, 2));

   380         } elseif ($bom == "\xFF\xFE") {

   381             return getid3_lib::iconv_utf16le_iso88591(substr($string, 2));

   382         }

   383         return $string;

   384     }

   385 

   386     

   387     

   388     // UTF-16 => UTF-8

   389     public static function iconv_utf16_utf8($string) {

   390         $bom = substr($string, 0, 2);

   391         if ($bom == "\xFE\xFF") {

   392             return getid3_iconv_replacement::iconv_utf16be_utf8(substr($string, 2));

   393         } elseif ($bom == "\xFF\xFE") {

   394             return getid3_iconv_replacement::iconv_utf16le_utf8(substr($string, 2));

   395         }

   396         return $string;

   397     }

   398     

   399     

   400     

   401     // UTF-16 => UTF-16BE

   402     public static function iconv_utf16_utf16be($string) {

   403         return getid3_iconv_replacement::iconv_utf8_utf16be(getid3_iconv_replacement::iconv_utf16_utf8($string));

   404     }

   405     

   406     

   407     

   408     // UTF-16 => UTF-16LE

   409     public static function iconv_utf16_utf16le($string) {

   410         return getid3_iconv_replacement::iconv_utf8_utf16le(getid3_iconv_replacement::iconv_utf16_utf8($string));

   411     }

   412 

   413 }

   414 

   415 ?>
author	rlm
date	Mon, 22 Feb 2010 11:34:16 -0500
parents	3f6b44aa6b35
children