<?php
/** ensure this file is being included by a parent file */
if (!defined('_JEXEC') && !defined('_VALID_MOS')) die('Restricted access');
/**
* This file allows to dynamically switch between file.system based mode and FTP based mode
*/
class ext_TextEncoding
{
static function changeCharset($inputCharset, $outputCharset, $text)
{
if ($inputCharset == $outputCharset) return $text;
// Due to iconv bug when dealing with text with non ASCII encoding for last char, we use this workaround http://fr.php.net/manual/fr/function.iconv.php#81494
if(function_exists("iconv"))
{
return iconv($inputCharset, $outputCharset, $text);
}else
{
$content = @htmlentities($text, ENT_QUOTES, $inputCharset);
return @html_entity_decode($content, ENT_QUOTES , $outputCharset);
}
}
static function parseCharset($locale)
{
$test = explode("@", $locale);
$locale = $test[0];
$encoding = substr(strrchr($locale, "."), 1);
if (is_numeric($encoding))
{
if (substr($encoding, 0, 2) == "12") // CP12xx are changed to Windows-12xx to allow PHP4 conversion
$encoding = "windows-".$encoding;
else $encoding = "CP".$encoding; // In other cases, PHP4 won't work anyway, so use CPxxxx encoding (that iconv supports)
} else if ($locale == "C")
{ // Locale not set correctly, most probable error cause is /etc/init.d/apache having "LANG=C" defined
// In any case, "C" is ASCII-7 bit so it's safe to use the extra bit as if it was UTF-8
$encoding = "UTF-8";
}
if (!strlen($encoding)) $encoding = "UTF-8";
return $encoding;
}
static function getEncoding(){
// Get the current locale (expecting the filesystem is in the same locale, as the standard says)
return ext_TextEncoding::parseCharset(setlocale(LC_CTYPE, 0));
}
static function fromUTF8($filesystemElement, $test = false){
if($test && !ext_TextEncoding::isUtf8($filesystemElement)){
return $filesystemElement;
}
$enc = ext_TextEncoding::getEncoding();
return ext_TextEncoding::changeCharset("UTF-8", $enc, $filesystemElement);
}
/** This function is used when the server's PHP configuration is using magic quote */
static function magicDequote($text)
{
// If the PHP server enables magic quotes, remove them
if (get_magic_quotes_gpc())
return stripslashes($text);
return $text;
}
static function fromPostedFileName($filesystemElement)
{
return ext_TextEncoding::fromUTF8(ext_TextEncoding::magicDequote($filesystemElement));
}
static function toUTF8($filesystemElement, $test = true){
if($test && ext_TextEncoding::isUtf8($filesystemElement)){
return $filesystemElement;
}
$enc = ext_TextEncoding::getEncoding();
return ext_TextEncoding::changeCharset($enc, "UTF-8", $filesystemElement);
}
static function isUtf8($string){
return preg_match('%^(?:
[\x09\x0A\x0D\x20-\x7E] # ASCII
| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
)*$%xs', $string);
}
}