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<?php
/* $Id: charset_conversion.lib.php,v 1.17 2003/06/13 07:37:23 nijel Exp $ */
// vim: expandtab sw=4 ts=4 sts=4:
/**
* Charset conversion functions.
*/
if (!defined('PMA_CHARSET_CONVERSION_LIB_INCLUDED')){
define('PMA_CHARSET_CONVERSION_LIB_INCLUDED', 1);
/**
* Loads the recode or iconv extensions if any of it is not loaded yet
*/
if (isset($cfg['AllowAnywhereRecoding'])
&& $cfg['AllowAnywhereRecoding']
&& $allow_recoding) {
// Initializes configuration for default, if not set:
if (!isset($cfg['RecodingEngine'])) {
$cfg['RecodingEngine'] = 'auto';
}
if ($cfg['RecodingEngine'] == 'recode') {
if (!@extension_loaded('recode')) {
PMA_dl('recode');
if (!@extension_loaded('recode')) {
echo $strCantLoadRecodeIconv;
exit();
}
}
$PMA_recoding_engine = 'recode';
} else if ($cfg['RecodingEngine'] == 'iconv') {
if (!@extension_loaded('iconv')) {
PMA_dl('iconv');
if (!@extension_loaded('iconv')) {
echo $strCantLoadRecodeIconv;
exit();
}
}
$PMA_recoding_engine = 'iconv';
} else {
if (@extension_loaded('iconv')) {
$PMA_recoding_engine = 'iconv';
} else if (@extension_loaded('recode')) {
$PMA_recoding_engine = 'recode';
} else {
PMA_dl('iconv');
if (!@extension_loaded('iconv')) {
PMA_dl('recode');
if (!@extension_loaded('recode')) {
echo $strCantLoadRecodeIconv;
exit();
} else {
$PMA_recoding_engine = 'recode';
}
} else {
$PMA_recoding_engine = 'iconv';
}
}
}
} // end load recode/iconv extension
define('PMA_CHARSET_NONE', 0);
define('PMA_CHARSET_ICONV', 1);
define('PMA_CHARSET_LIBICONV', 2);
define('PMA_CHARSET_RECODE', 3);
if (!isset($cfg['IconvExtraParams'])) {
$cfg['IconvExtraParams'] = '';
}
// Finally detects which function will we use:
if (isset($cfg['AllowAnywhereRecoding'])
&& $cfg['AllowAnywhereRecoding']
&& $allow_recoding) {
if (!isset($PMA_recoding_engine)) {
$PMA_recoding_engine = $cfg['RecodingEngine'];
}
if ($PMA_recoding_engine == 'iconv') {
if (@function_exists('iconv')) {
$PMA_recoding_engine = PMA_CHARSET_ICONV;
} else if (@function_exists('libiconv')) {
$PMA_recoding_engine = PMA_CHARSET_LIBICONV;
} else {
$PMA_recoding_engine = PMA_CHARSET_NONE;
if (!isset($GLOBALS['is_header_sent'])) {
include('./header.inc.php');
}
echo $strCantUseRecodeIconv;
include('./footer.inc.php');
exit();
}
} else if ($PMA_recoding_engine == 'recode') {
if (@function_exists('recode_string')) {
$PMA_recoding_engine = PMA_CHARSET_RECODE;
} else {
$PMA_recoding_engine = PMA_CHARSET_NONE;
if (!isset($GLOBALS['is_header_sent'])) {
include('./header.inc.php');
}
echo $strCantUseRecodeIconv;
include('./footer.inc.php');
exit();
}
} else {
if (@function_exists('iconv')) {
$PMA_recoding_engine = PMA_CHARSET_ICONV;
} else if (@function_exists('libiconv')) {
$PMA_recoding_engine = PMA_CHARSET_LIBICONV;
} elseif (@function_exists('recode_string')) {
$PMA_recoding_engine = PMA_CHARSET_RECODE;
} else {
$PMA_recoding_engine = PMA_CHARSET_NONE;
if (!isset($GLOBALS['is_header_sent'])) {
include('./header.inc.php');
}
echo $strCantUseRecodeIconv;
include('./footer.inc.php');
exit();
}
}
} else {
$PMA_recoding_engine = PMA_CHARSET_NONE;
}
/**
* Converts encoding according to current settings.
*
* @param mixed what to convert (string or array of strings or object returned by mysql_fetch_field)
*
* @return string converted string or array of strings
*
* @global array the configuration array
* @global boolean whether recoding is allowed or not
* @global string the current charset
* @global array the charset to convert to
*
* @access public
*
* @author nijel
*/
function PMA_convert_display_charset($what) {
global $cfg, $allow_recoding, $charset, $convcharset;
if (!(isset($cfg['AllowAnywhereRecoding']) && $cfg['AllowAnywhereRecoding'] && $allow_recoding)) {
return $what;
}
else if (is_array($what)) {
$result = array();
reset($what);
while (list($key, $val) = each($what)) {
if (is_string($val) || is_array($val)) {
if (is_string($key)) {
$result[PMA_convert_display_charset($key)] = PMA_convert_display_charset($val);
} else {
$result[$key] = PMA_convert_display_charset($val);
}
} else {
$result[$key] = $val;
}
} // end while
return $result;
}
else if (is_string($what)) {
switch ($GLOBALS['PMA_recoding_engine']) {
case PMA_CHARSET_RECODE:
return recode_string($convcharset . '..' . $charset, $what);
break;
case PMA_CHARSET_ICONV:
return iconv($convcharset, $charset . $cfg['IconvExtraParams'], $what);
break;
case PMA_CHARSET_LIBICONV:
return libiconv($convcharset, $charset, $what);
break;
default:
return $what;
}
}
else if (is_object($what)) {
// isn't it object returned from mysql_fetch_field ?
if (@is_string($what->name)) {
$what->name = PMA_convert_display_charset($what->name);
}
if (@is_string($what->table)) {
$what->table = PMA_convert_display_charset($what->table);
}
if (@is_string($what->Database)) {
$what->Database = PMA_convert_display_charset($what->Database);
}
return $what;
}
else {
// when we don't know what it is we don't touch it...
return $what;
}
} // end of the "PMA_convert_display_charset()" function
/**
* Converts encoding of text according to current settings.
*
* @param string what to convert
*
* @return string converted text
*
* @global array the configuration array
* @global boolean whether recoding is allowed or not
* @global string the current charset
* @global array the charset to convert to
*
* @access public
*
* @author nijel
*/
function PMA_convert_charset($what) {
global $cfg, $allow_recoding, $charset, $convcharset;
if (!(isset($cfg['AllowAnywhereRecoding']) && $cfg['AllowAnywhereRecoding'] && $allow_recoding)) {
return $what;
} else {
switch ($GLOBALS['PMA_recoding_engine']) {
case PMA_CHARSET_RECODE:
return recode_string($charset . '..' . $convcharset, $what);
break;
case PMA_CHARSET_ICONV:
return iconv($charset, $convcharset . $cfg['IconvExtraParams'], $what);
break;
case PMA_CHARSET_LIBICONV:
return libiconv($charset, $convcharset, $what);
break;
default:
return $what;
}
}
} // end of the "PMA_convert_charset()" function
/**
* Converts encoding of text according to parameters with detected
* conversion function.
*
* @param string source charset
* @param string target charset
* @param string what to convert
*
* @return string converted text
*
* @access public
*
* @author nijel
*/
function PMA_convert_string($src_charset, $dest_charset, $what) {
switch ($GLOBALS['PMA_recoding_engine']) {
case PMA_CHARSET_RECODE:
return recode_string($src_charset . '..' . $dest_charset, $what);
break;
case PMA_CHARSET_ICONV:
return iconv($src_charset, $dest_charset . $GLOBALS['cfg']['IconvExtraParams'], $what);
break;
case PMA_CHARSET_LIBICONV:
return libiconv($src_charset, $dest_charset, $what);
break;
default:
return $what;
}
} // end of the "PMA_convert_string()" function
/**
* Converts encoding of file according to parameters with detected
* conversion function. The old file will be unlinked and new created and
* its file name is returned.
*
* @param string source charset
* @param string target charset
* @param string file to convert
*
* @return string new temporay file
*
* @access public
*
* @author nijel
*/
function PMA_convert_file($src_charset, $dest_charset, $file) {
switch ($GLOBALS['PMA_recoding_engine']) {
case PMA_CHARSET_RECODE:
case PMA_CHARSET_ICONV:
case PMA_CHARSET_LIBICONV:
$tmpfname = tempnam('', 'PMA_convert_file');
$fin = fopen($file, 'r');
$fout = fopen($tmpfname, 'w');
if ($GLOBALS['PMA_recoding_engine'] == PMA_CHARSET_RECODE) {
recode_file($src_charset . '..' . $dest_charset, $fin, $fout);
} else {
while (!feof($fin)) {
$line = fgets($fin, 4096);
if ($GLOBALS['PMA_recoding_engine'] == PMA_CHARSET_ICONV) {
$dist = iconv($src_charset, $dest_charset . $GLOBALS['cfg']['IconvExtraParams'], $line);
} else {
$dist = libiconv($src_charset, $dest_charset, $line);
}
fputs($fout, $dist);
} // end while
}
fclose($fin);
fclose($fout);
unlink($file);
return $tmpfname;
break;
default:
return $file;
}
} // end of the "PMA_convert_file()" function
} // $__PMA_CHARSET_CONVERSION_LIB__
?>