File: /var/www/ilya/data/www/irkboard.ru/ips_kernel/classConvertCharset.php
<?php
/**
* Invision Power Services
* IP.Board v3.0.1
* Character set conversion library
* Last Updated: $Date: 2009-05-14 16:56:07 -0400 (Thu, 14 May 2009) $
*
* @author $Author: bfarber $
* @author Mikolaj Jedrzejak <mikolajj@op.pl>
* @copyright (c) 2001 - 2009 Invision Power Services, Inc.
* @copyright Copyright Mikolaj Jedrzejak (c) 2003-2004
* @license http://www.invisionpower.com/community/board/license.html
* @package Invision Power Services Kernel
* @link http://www.invisionpower.com
* @since Friday 2nd December 2005 10:18
* @version $Revision: 264 $
* @version 1.0 2004-07-27 00:37
* @link http://www.unicode.org Unicode Homepage
* @link http://www.mikkom.pl My Homepage
* @link https://www.invisionpower.com/index.php?appcomponent=downloads Downloads
*
* This class is an adaptation of the ConvertCharset.class.php provided by Mikolaj Jedrzejak.
* In order to use character set conversions, you must first download the conversion libraries from our website. See the 'Downloads' link.
* Upon downloading the tables, extract the zip and place the top-level i18n folder under ips_kernel/.
* His original conversion class and License are provided in the download with the conversion libraries for reference.
*
* Convert from iso-8859-7 to utf-8
* <code>
* $convert = new classConvertCharset();
* $converted_text = $convert->convertEncoding( $string, 'iso-8859-7', 'utf-8' );
* print $converted_text;
* </code>
*
*/
if ( ! defined( 'IPS_CLASSES_PATH' ) )
{
/**
* Define classes path
*/
define( 'IPS_CLASSES_PATH', dirname(__FILE__) );
}
class classConvertCharset
{
/**
* Array of error messages associated with the conversion
*
* @access public
* @var array Error messages
*/
public $errors = array();
/**
* Should HTML entities be turned into numeric entities
*
* @access private
* @var boolean
*/
private $entities = true;
/**
* Conversion method to use.
* Valid values include: mb, iconv, recode, internal
*
* @access public
* @var string
*/
public $method = 'internal';
/**
* Path for character sets
*
* @access public
* @var string
*/
public $charsetPath = '';
/**
* Converts a text string from its current charset to a destination charset
*
* @access public
* @param string Text string
* @param string Text string char set (original)
* @param string Desired character set (destination)
* @return string Converted string
*/
public function convertEncoding( $string, $string_char_set, $destination_char_set='UTF-8' )
{
$string_char_set = strtolower($string_char_set);
$t = $string;
//-----------------------------------------
// Did we pass a destination?
//-----------------------------------------
$destination_char_set = strtolower($destination_char_set);
//-----------------------------------------
// Not the same?
//-----------------------------------------
if ( $destination_char_set == $string_char_set )
{
return $string;
}
if( !$string_char_set )
{
return $string;
}
if( !$t OR $t == '' )
{
return $string;
}
//-----------------------------------------
// Do the convert - internally..
//-----------------------------------------
$method = "convertUsing_" . $this->method;
$text = $this->$method( $string, $string_char_set, $destination_char_set );
return $text ? $text : $t;
}
/**
* Converts a text string from its current charset to a destination charset using mb_convert_encoding
*
* @access private
* @param string Text string
* @param string Text string char set (original)
* @param string Desired character set (destination)
* @return string Converted string
*/
private function convertUsing_mb( $string, $string_char_set, $destination_char_set='UTF-8' )
{
if ( function_exists( 'mb_convert_encoding' ) )
{
$encodings = array_map( 'strtolower', mb_list_encodings() );
if( in_array( strtolower( $destination_char_set ), $encodings ) AND in_array( strtolower( $string_char_set ), $encodings ) )
{
$text = mb_convert_encoding( $string, $destination_char_set, $string_char_set );
}
else
{
$this->errors[] = "NO_MB_FUNCTION";
}
}
else
{
$this->errors[] = "NO_MB_FUNCTION";
}
return $text ? $text : $string;
}
/**
* Converts a text string from its current charset to a destination charset using iconv
*
* @access private
* @param string Text string
* @param string Text string char set (original)
* @param string Desired character set (destination)
* @return string Converted string
*/
private function convertUsing_iconv( $string, $string_char_set, $destination_char_set='UTF-8' )
{
if ( function_exists( 'iconv' ) )
{
$text = iconv( $string_char_set, $destination_char_set.'//TRANSLIT', $string );
}
else
{
$this->errors[] = "NO_ICONV_FUNCTION";
}
return $text ? $text : $string;
}
/**
* Converts a text string from its current charset to a destination charset using recode_string
*
* @access private
* @param string Text string
* @param string Text string char set (original)
* @param string Desired character set (destination)
* @return string Converted string
*/
private function convertUsing_recode( $string, $string_char_set, $destination_char_set='UTF-8' )
{
if ( function_exists( 'recode_string' ) )
{
$text = recode_string( $string_char_set.'..'.$destination_char_set, $string );
}
else
{
$this->errors[] = "NO_RECODE_FUNCTION";
}
return $text ? $text : $string;
}
/**
* Converts a text string from its current charset to a destination charset using internal conversion class.
* The bulk of this function was written by Mikolaj Jedrzejak and used with permission via the License
*
* @access private
* @param string Text string
* @param string Text string char set (original)
* @param string Desired character set (destination)
* @return string Converted string
*/
private function convertUsing_internal( $string, $string_char_set, $destination_char_set='UTF-8' )
{
$text = '';
$original = $string;
if( !$this->charsetPath )
{
$this->charsetPath = IPS_KERNEL_PATH . '/i18n/ConvertTables/';
}
/**
* This divison was made to prevent errors during convertion to/from utf-8 with
* "entities" enabled, because we need to use proper destination(to)/source(from)
* encoding table to write proper entities.
*
* This is the first case. We are convertinf from 1byte chars...
**/
if ($string_char_set != "utf-8")
{
/**
* Now build table with both charsets for encoding change.
**/
if ($destination_char_set != "utf-8")
{
$charsetTable = $this->_makeConversionTable( $string_char_set, $destination_char_set );
}
else
{
$charsetTable = $this->_makeConversionTable( $string_char_set );
}
if( !count($charsetTable) )
{
$this->errors[] = "Character set table not found";
return $original;
}
/**
* For each char in a string...
**/
for ($i = 0; $i < strlen($string); $i++)
{
$hexChar = "";
$unicodeHexChar = "";
$hexChar = strtoupper(dechex(ord($string[$i])));
// This is fix from Mario Klingemann, it prevents
// droping chars below 16 because of missing leading 0 [zeros]
if ( strlen($hexChar)==1 )
{
$hexChar = "0" . $hexChar;
}
// This is quick fix of 10 chars in gsm0338
// Thanks goes to Andrea Carpani who pointed on this problem and solve it ;)
if ( ( $string_char_set == "gsm0338" ) && ( $hexChar == '1B' ) )
{
$i++;
$hexChar .= strtoupper(dechex(ord($string[$i])));
}
if ( $destination_char_set != "utf-8" )
{
if ( in_array( $hexChar, $charsetTable[$string_char_set] ) )
{
$unicodeHexChar = array_search( $hexChar, $charsetTable[$string_char_set] );
$unicodeHexChars = explode( "+",$unicodeHexChar );
for( $unicodeHexCharElement = 0; $unicodeHexCharElement < count($unicodeHexChars); $unicodeHexCharElement++ )
{
if ( array_key_exists( $unicodeHexChars[$unicodeHexCharElement], $charsetTable[$destination_char_set] ) )
{
if ( $this->entities == true )
{
$text .= $this->_unicodeEntity( $this->_hexToUtf( $unicodeHexChars[$unicodeHexCharElement] ) );
}
else
{
$text .= chr(hexdec($charsetTable[$destination_char_set][$unicodeHexChars[$unicodeHexCharElement]]));
}
}
else
{
$this->errors[] = "NO_CHAR_IN_DESTINATION: {$string[$i]}";
return $original;
}
}
}
else
{
$this->errors[] = "NO_CHAR_IN_SOURCE: {$string[$i]}";
return $original;
}
}
else
{
if ( in_array( $hexChar, $charsetTable[$string_char_set] ) )
{
$unicodeHexChar = array_search( $hexChar, $charsetTable[$string_char_set] );
$unicodeHexChars = explode( "+", $unicodeHexChar );
/**
* Sometimes there are two or more utf-8 chars per one regular char.
* Extream, example is polish old Mazovia encoding, where one char contains
* two lettes 007a (z) and 0142 (l slash), we need to figure out how to
* solve this problem.
* The letters are merge with "plus" sign, there can be more than two chars.
* In Mazowia we have 007A+0142, but sometimes it can look like this
* 0x007A+0x0142+0x2034 (that string means nothing, it just shows the possibility...)
**/
for( $unicodeHexCharElement = 0; $unicodeHexCharElement < count($unicodeHexChars); $unicodeHexCharElement++)
{
if ( $this->entities == true )
{
$text .= $this->_unicodeEntity( $this->_hexToUtf( $unicodeHexChars[$unicodeHexCharElement] ) );
}
else
{
$text .= $this->_hexToUtf( $unicodeHexChars[$unicodeHexCharElement] );
}
}
}
else
{
$this->errors[] = "NO_CHAR_IN_SOURCE: {$string[$i]}";
return $original;
}
}
}
}
/**
* This is second case. We are encoding from multibyte char string.
**/
else if( $string_char_set == "utf-8" )
{
$hexChar = "";
$unicodeHexChar = "";
$charsetTable = $this->_makeConversionTable( $destination_char_set );
if( is_array($charsetTable[$destination_char_set]) AND count($charsetTable[$destination_char_set]) )
{
foreach ( $charsetTable[$destination_char_set] as $unicodeHexChar => $hexChar )
{
if ($this->entities == true)
{
$entityOrChar = $this->_unicodeEntity($this->_hexToUtf($unicodeHexChar));
}
else
{
$entityOrChar = chr(hexdec($HexChar));
}
$string = str_replace( $this->_hexToUtf( $unicodeHexChar), $entityOrChar, $string );
}
}
$text = $string;
}
return $text ? $text : $original;
}
/**
* Convert unicode characters to unicode HTML entities
*
* @access private
* @param string $unicodeString Input Unicode string (1 char can take more than 1 byte)
* @return string This is an input string olso with unicode chars, bus saved as entities
* @see _hexToUtf()
**/
private function _unicodeEntity( $unicodeString )
{
$outString = "";
$stringLength = strlen( $unicodeString );
for( $charPosition = 0; $charPosition < $stringLength; $charPosition++ )
{
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
if ($asciiChar < 128) //1 7 0bbbbbbb (127)
{
$outString .= $char;
}
else if ($asciiChar >> 5 == 6) //2 11 110bbbbb 10bbbbbb (2047)
{
$firstByte = ($asciiChar & 31);
$charPosition++;
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
$secondByte = ($asciiChar & 63);
$asciiChar = ($firstByte * 64) + $secondByte;
$entity = sprintf ( "&#%d;", $asciiChar );
$outString .= $entity;
}
else if ($asciiChar >> 4 == 14) //3 16 1110bbbb 10bbbbbb 10bbbbbb
{
$firstByte = ($asciiChar & 31);
$charPosition++;
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
$secondByte = ($asciiChar & 63);
$charPosition++;
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
$thirdByte = ($asciiChar & 63);
$asciiChar = ((($firstByte * 64) + $secondByte) * 64) + $thirdByte;
$entity = sprintf ("&#%d;", $asciiChar);
$outString .= $entity;
}
else if ($asciiChar >> 3 == 30) //4 21 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
{
$firstByte = ($asciiChar & 31);
$charPosition++;
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
$secondByte = ($asciiChar & 63);
$charPosition++;
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
$thirdByte = ($asciiChar & 63);
$charPosition++;
$char = $unicodeString [$charPosition];
$asciiChar = ord ($char);
$fourthByte = ($asciiChar & 63);
$asciiChar = ((((($firstByte * 64) + $secondByte) * 64) + $thirdByte) * 64) + $fourthByte;
$entity = sprintf ("&#%d;", $asciiChar);
$outString .= $entity;
}
}
return $outString;
}
/**
* Convert unicode characters to unicode HTML entities.
* It is very similar to _unicodeEntity function (link below). There is one difference
* in returned format. This time it's a regular char(s), in most cases it will be one or two chars.
*
* @access private
* @param string $utfCharInHex Hexadecimal value of a unicode char.
* @return string Encoded hexadecimal value as a regular char.
* @see _unicodeEntity()
**/
private function _hexToUtf( $utfCharInHex )
{
$outputChar = "";
$utfCharInDec = hexdec($utfCharInHex);
if( $utfCharInDec < 128 )
{
$outputChar .= chr($utfCharInDec);
}
else if( $utfCharInDec < 2048 )
{
$outputChar .= chr( ( $utfCharInDec>>6 ) + 192 ) . chr( ( $utfCharInDec&63 ) + 128 );
}
else if( $utfCharInDec < 65536 )
{
$outputChar .= chr( ( $utfCharInDec>>12 ) + 224 ) . chr( ( ( $utfCharInDec>>6 ) &63 ) + 128 ) . chr( ( $utfCharInDec&63 ) + 128 );
}
else if( $utfCharInDec < 2097152 )
{
$outputChar .= chr( $utfCharInDec>>18+240 ) . chr( ( ( $utfCharInDec>>12 ) &63 ) + 128 ) . chr( ( $utfCharInDec>>6 ) &63 + 128 ) . chr( $utfCharInDec&63 + 128 );
}
return $outputChar;
}
/**
* Create the conversion tables to use.
*
* This function creates table with two SBCS (Single Byte Character Set). Every conversion is through this table.
*
* - The file with encoding tables have to be save in "Format A" of unicode.org charset table format.
* - BOTH charsets MUST be SBCS
* - The files with encoding tables have to be complete (None of chars can be missing, unles you are sure you are not going to use it)
*
* "Format A" encoding file, if you have to build it by yourself should aplly these rules:
* - you can comment everything with #
* - first column contains 1 byte chars in hex starting from 0x..
* - second column contains unicode equivalent in hex starting from 0x....
* - then every next column is optional, but in "Format A" it should contain unicode char name or/and your own comment
* - the columns can be splited by "spaces", "tabs", "," or any combination of these
* - below is an example
*
* <code>
* #
* # The entries are in ANSI X3.4 order.
* #
* 0x00 0x0000 # NULL end extra comment, if needed
* 0x01 0x0001 # START OF HEADING
* # Oh, one more thing, you can make comments inside of a rows if you like.
* 0x02 0x0002 # START OF TEXT
* 0x03 0x0003 # END OF TEXT
* next line, and so on...
* </code>
*
* You can get full tables with encodings from http://www.unicode.org
*
* @access private
* @param string $firstEncoding Name of first encoding and first encoding filename (thay have to be the same)
* @param string $secondEncoding Name of second encoding and second encoding filename (thay have to be the same). Optional for building a joined table.
* @return array Table necessary to change one encoding to another.
**/
private function _makeConversionTable( $firstEncoding, $secondEncoding = "" )
{
$convertTable = array();
for( $i = 0; $i < func_num_args(); $i++ )
{
/**
* Because func_*** can't be used inside of another function call
* we have to save it as a separate value.
**/
$fileName = func_get_arg($i);
if ( !is_file( $this->charsetPath . $fileName ) )
{
$this->errors[] = "FILE_NOT_FOUND: {$fileName}";
return;
}
$fileWithEncTabe = fopen( $this->charsetPath . $fileName, "r" ) or die(); //This die(); is just to make sure...
while(!feof($fileWithEncTabe))
{
/**
* We asume that line is not longer
* than 1024 which is the default value for fgets function
**/
if( $oneLine = trim( fgets( $fileWithEncTabe, 1024 ) ) )
{
/**
* We don't need all comment lines. I check only for "#" sign, because
* this is a way of making comments by unicode.org in thair encoding files
* and that's where the files are from :-)
**/
if ( substr( $oneLine, 0, 1 ) != "#" )
{
/**
* Sometimes inside the charset file the hex walues are separated by
* "space" and sometimes by "tab", the below preg_split can also be used
* to split files where separator is a ",", "\r", "\n" and "\f"
**/
$hexValue = preg_split ( "/[\s,]+/", $oneLine, 3 ); //We need only first 2 values
/**
* Sometimes char is UNDEFINED, or missing so we can't use it for convertion
**/
if (substr($hexValue[1], 0, 1) != "#")
{
$arrayKey = strtoupper(str_replace(strtolower("0x"), "", $hexValue[1]));
$arrayValue = strtoupper(str_replace(strtolower("0x"), "", $hexValue[0]));
$convertTable[ func_get_arg($i) ][ $arrayKey ] = $arrayValue;
}
}
}
}
}
return $convertTable;
}
}
?>