phpmyadmin/libraries/charset_conversion.lib.php

   1 <?php
   2 /* vim: set expandtab sw=4 ts=4 sts=4: */
   3 /**
   4  * Charset conversion functions.
   5  *
   6  * @package PhpMyAdmin
   7  */
   8 if (! defined('PHPMYADMIN')) {
   9     exit;
  10 }
  11
  12 define('PMA_CHARSET_NONE', 0);
  13 define('PMA_CHARSET_ICONV', 1);
  14 define('PMA_CHARSET_RECODE', 2);
  15 define('PMA_CHARSET_ICONV_AIX', 3);
  16
  17 // Finally detect which function we will use:
  18 if ($cfg['RecodingEngine'] == 'iconv') {
  19     if (@function_exists('iconv')) {
  20         if ((@stristr(PHP_OS, 'AIX'))
  21             && (@strcasecmp(ICONV_IMPL, 'unknown') == 0)
  22             && (@strcasecmp(ICONV_VERSION, 'unknown') == 0)
  23         ) {
  24             $PMA_recoding_engine = PMA_CHARSET_ICONV_AIX;
  25         } else {
  26             $PMA_recoding_engine = PMA_CHARSET_ICONV;
  27         }
  28     } else {
  29         $PMA_recoding_engine = PMA_CHARSET_NONE;
  30         PMA_warnMissingExtension('iconv');
  31     }
  32 } elseif ($cfg['RecodingEngine'] == 'recode') {
  33     if (@function_exists('recode_string')) {
  34         $PMA_recoding_engine = PMA_CHARSET_RECODE;
  35     } else {
  36         $PMA_recoding_engine = PMA_CHARSET_NONE;
  37         PMA_warnMissingExtension('recode');
  38     }
  39 } elseif ($cfg['RecodingEngine'] == 'auto') {
  40     if (@function_exists('iconv')) {
  41         if ((@stristr(PHP_OS, 'AIX'))
  42             && (@strcasecmp(ICONV_IMPL, 'unknown') == 0)
  43             && (@strcasecmp(ICONV_VERSION, 'unknown') == 0)
  44         ) {
  45             $PMA_recoding_engine = PMA_CHARSET_ICONV_AIX;
  46         } else {
  47             $PMA_recoding_engine = PMA_CHARSET_ICONV;
  48         }
  49     } elseif (@function_exists('recode_string')) {
  50         $PMA_recoding_engine = PMA_CHARSET_RECODE;
  51     } else {
  52         $PMA_recoding_engine = PMA_CHARSET_NONE;
  53     }
  54 } else {
  55     $PMA_recoding_engine = PMA_CHARSET_NONE;
  56 }
  57
  58 /* Load AIX iconv wrapper if needed */
  59 if ($PMA_recoding_engine == PMA_CHARSET_ICONV_AIX) {
  60     include_once './libraries/iconv_wrapper.lib.php';
  61 }
  62
  63 /**
  64  * Converts encoding of text according to parameters with detected
  65  * conversion function.
  66  *
  67  * @param string $src_charset  source charset
  68  * @param string $dest_charset target charset
  69  * @param string $what         what to convert
  70  *
  71  * @return string   converted text
  72  *
  73  * @access  public
  74  *
  75  */
  76 function PMA_convert_string($src_charset, $dest_charset, $what)
  77 {
  78     if ($src_charset == $dest_charset) {
  79         return $what;
  80     }
  81     switch ($GLOBALS['PMA_recoding_engine']) {
  82     case PMA_CHARSET_RECODE:
  83         return recode_string($src_charset . '..'  . $dest_charset, $what);
  84     case PMA_CHARSET_ICONV:
  85         return iconv(
  86             $src_charset, $dest_charset . $GLOBALS['cfg']['IconvExtraParams'], $what
  87         );
  88     case PMA_CHARSET_ICONV_AIX:
  89         return PMA_aix_iconv_wrapper(
  90             $src_charset, $dest_charset . $GLOBALS['cfg']['IconvExtraParams'], $what
  91         );
  92     default:
  93         return $what;
  94     }
  95 } //  end of the "PMA_convert_string()" function
  96
  97 ?>