91 lines
3.5 KiB
PHP
91 lines
3.5 KiB
PHP
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<?php
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/** ensure this file is being included by a parent file */
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if (!defined('_JEXEC') && !defined('_VALID_MOS')) die('Restricted access');
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/**
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* This file allows to dynamically switch between file.system based mode and FTP based mode
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*/
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class ext_TextEncoding
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{
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static function changeCharset($inputCharset, $outputCharset, $text)
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{
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if ($inputCharset == $outputCharset) return $text;
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// Due to iconv bug when dealing with text with non ASCII encoding for last char, we use this workaround http://fr.php.net/manual/fr/function.iconv.php#81494
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if(function_exists("iconv"))
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{
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return iconv($inputCharset, $outputCharset, $text);
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}else
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{
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$content = @htmlentities($text, ENT_QUOTES, $inputCharset);
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return @html_entity_decode($content, ENT_QUOTES , $outputCharset);
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}
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}
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static function parseCharset($locale)
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{
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$test = explode("@", $locale);
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$locale = $test[0];
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$encoding = substr(strrchr($locale, "."), 1);
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if (is_numeric($encoding))
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{
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if (substr($encoding, 0, 2) == "12") // CP12xx are changed to Windows-12xx to allow PHP4 conversion
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$encoding = "windows-".$encoding;
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else $encoding = "CP".$encoding; // In other cases, PHP4 won't work anyway, so use CPxxxx encoding (that iconv supports)
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} else if ($locale == "C")
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{ // Locale not set correctly, most probable error cause is /etc/init.d/apache having "LANG=C" defined
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// In any case, "C" is ASCII-7 bit so it's safe to use the extra bit as if it was UTF-8
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$encoding = "UTF-8";
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}
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if ($encoding == 'UTF8') $encoding = "UTF-8";
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if (!strlen($encoding)) $encoding = "UTF-8";
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return $encoding;
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}
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static function getEncoding(){
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// Get the current locale (expecting the filesystem is in the same locale, as the standard says)
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return ext_TextEncoding::parseCharset(setlocale(LC_CTYPE, 0));
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}
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static function fromUTF8($filesystemElement, $test = false){
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if($test && !ext_TextEncoding::isUtf8($filesystemElement)){
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return $filesystemElement;
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}
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$enc = ext_TextEncoding::getEncoding();
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return ext_TextEncoding::changeCharset("UTF-8", $enc, $filesystemElement);
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}
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/** This function is used when the server's PHP configuration is using magic quote */
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static function magicDequote($text)
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{
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// If the PHP server enables magic quotes, remove them
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if (get_magic_quotes_gpc())
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return stripslashes($text);
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return $text;
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}
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static function fromPostedFileName($filesystemElement)
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{
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return ext_TextEncoding::fromUTF8(ext_TextEncoding::magicDequote($filesystemElement));
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}
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static function toUTF8($filesystemElement, $test = true){
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if($test && ext_TextEncoding::isUtf8($filesystemElement)){
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return $filesystemElement;
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}
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$enc = ext_TextEncoding::getEncoding();
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return ext_TextEncoding::changeCharset($enc, "UTF-8", $filesystemElement);
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}
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static function isUtf8($string){
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return preg_match('%^(?:
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[\x09\x0A\x0D\x20-\x7E] # ASCII
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| [\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
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| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
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| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
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| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
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| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
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| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
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| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
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)*$%xs', $string);
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}
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}
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