Mapping from one codepage to another can be done using the eZCodePageMapper class, it provides instantaneous mapping from one character code in one charset to the code in the other charset.

This table can be produced by the following code. Table 1 shows the charset to map from, table 2 shows the charset to map to and table 3 shows the characters that could be mapped.

function displayCharsetTable( $values,

                             
$x_start, $x_stop,

                             
$y_start, $y_stop )

{

   print( "<table>\n<tr><td></td>" );

   for ( $x = $x_start; $x < $x_stop; ++$x )

       print( "<td>$x</td>" );

   print( "</tr>\n" );

   for ( $y = $y_start; $y < $y_stop; ++$y )

   {

       print( "<tr><td>$y</td>" );

       for ( $x = $x_start; $x < $x_stop; ++$x )

       {

           if ( isset( $values[$x][$y] ) )

           {

               $value = $values[$x][$y];

               
$char_utf8 = htmlspecialchars( $value[0] );

               $char_code = $value[1];

               print( "<td>
$char_utf8</td>" );

           }

           else

               print( "<td></td>" );

       }

       print( "</tr>\n" );

   }

   print( "</table>\n" );

}

 

function generateCharsetTable( &$values, &$codepage,

                              
$x_start, $x_stop,

                              
$y_start, $y_stop )

{

   $values = array();

   for ( $y = $y_start; $y < $y_stop; ++$y )

   {

       for ( $x = $x_start; $x < $x_stop; ++$x )

       {

           $code = ($y*$y_stop) + $x;

           $utf8 = $codepage->codeToUtf8( $code );

           $values[$x][$y] = array( $utf8, $code );

       }

   }

}

 

header( "Content-Type: text/html; charset=utf8" );

 

include_once( "lib/ezi18n/classes/ezcodepagemapper.php" );

include_once( "lib/ezutils/classes/ezhttptool.php" );

 

$input_charset = "cyrillic";

$output_charset = "wincyrillic";

 

$http =& eZHTTPTool::instance();

if ( $http->hasPostVariable( "ChangeCharset" ) )

{

   if ( $http->hasPostVariable( "InputCharset" ) )

   {

       $input_charset = $http->postVariable( "InputCharset" );

   }

   if ( $http->hasPostVariable( "OutputCharset" ) )

   {

       $output_charset = $http->postVariable( "OutputCharset" );

   }

}

 

$input_codepage =& eZCodePage::instance( $input_charset );

$output_codepage =& eZCodePage::instance( $output_charset );

$codepage_mapper =& eZCodePageMapper::instance( $input_charset, $output_charset );

 

print( "

<form action=\"\" method=\"post\" name=\"CodepageMapping\">

<p>

Table <b>1</b> shows the charset to map from, table <b>2</b> shows the charset to map to

and table <b>3</b> shows the characters that could be mapped.

</p>

 

<p class=\"footnote\">

This page uses utf8 output to allow displaying two different charsets at the same time,

you might not see all characters depending on your font support.

</p>

" );

 

generateCharsetTable( $input_values, $input_codepage,

                     0,
 16,

                     0,
 16 );

generateCharsetTable( $output_values, $output_codepage,

                     0,
 16,

                     0,
 16 );

 

$mapped_values = array();

for ( $y = 0; $y < 16; ++$y )

{

   for ( $x = 0; $x < 16; ++$x )

   {

       $input_code = ($y*16) + $x;

       $output_code = $codepage_mapper->mapInputCode( $input_code );

       $output_utf8 = $output_codepage->codeToUtf8( $output_code );

       $output_x = ( $output_code % 16 );

       $output_y = ( $output_code / 16 );

       $mapped_values[$output_x][$output_y] = array( $output_utf8, $input_code );

   }

}

 

$charset_list = eZCodePage::codepageList();

 

print( "<table width=\"100%\">

<tr><td>

<select name=\"InputCharset\">" );

foreach( $charset_list as $charset )

{

   print( "<option 
value=\"$charset\" " . ( $input_codepage->charsetCode() == $charset ?
 "selected=\"selected\"" : "" ) . ">$charset</option>" );

}

print( "</select>

</td><td>

<select name=\"OutputCharset\">" );

foreach( $charset_list as $charset )

{

   print( "<option 
value=\"$charset\" " . ( $output_codepage->charsetCode() == $charset ?
 "selected=\"selected\"" : "" ) . ">$charset</option>" );

}

print( "</select>

 

</td><td>

<input class=\"stdbutton\" type=\"submit\" Name=\"ChangeCharset\" value=\"Change charset\">

</td></tr>

<tr><td>" );

print( "<h2>1. " . $input_codepage->charsetCode() );

if ( $input_codepage->charsetCode() != $input_codepage->requestedCharsetCode() )

   print( "(" . $input_codepage->requestedCharsetCode() . ")" );

print( "</h2>" );

displayCharsetTable( $input_values,

                    0, 16,

                    0, 16 );

print( "</td><td>" );

print( "<h2>2. " . $output_codepage->charsetCode() );

if ( $output_codepage->charsetCode() != $output_codepage->requestedCharsetCode() )

   print( "(" . $output_codepage->requestedCharsetCode() . ")" );

print( "</h2>" );

displayCharsetTable( $output_values,

                    0, 16,

                    0, 16 );

print( "</td>" );

print( "<td colspan=\"2\">" );

print( "<h2>3. " . $input_codepage->charsetCode() . " => " . $output_codepage->charsetCode() . "</h2>" );

displayCharsetTable( $mapped_values,

                    0, 16,

                    0, 16 );

print( "</td></tr>" );

print( "</table>" );

print( "</form>" );