8bb2b3e3bf
This fixes the two phpunit tests of Revision of Legacy encoding when native iconv is not available in php. Allow js_unescape to take advantage of our wrapper, too. (although that function seems completely unused...)
99 lines
2.2 KiB
PHP
99 lines
2.2 KiB
PHP
<?php
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/**
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* @file
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* @ingroup Ajax
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*/
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if ( !defined( 'MEDIAWIKI' ) ) {
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die( 1 );
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}
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/**
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* Function converts an Javascript escaped string back into a string with
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* specified charset (default is UTF-8).
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* Modified function from http://pure-essence.net/stuff/code/utf8RawUrlDecode.phps
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*
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* @param $source String escaped with Javascript's escape() function
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* @param $iconv_to String destination character set will be used as second parameter
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* in the iconv function. Default is UTF-8.
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* @return string
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*/
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function js_unescape( $source, $iconv_to = 'UTF-8' ) {
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$decodedStr = '';
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$pos = 0;
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$len = strlen ( $source );
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while ( $pos < $len ) {
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$charAt = substr ( $source, $pos, 1 );
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if ( $charAt == '%' ) {
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$pos++;
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$charAt = substr ( $source, $pos, 1 );
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if ( $charAt == 'u' ) {
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// we got a unicode character
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$pos++;
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$unicodeHexVal = substr ( $source, $pos, 4 );
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$unicode = hexdec ( $unicodeHexVal );
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$decodedStr .= code2utf( $unicode );
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$pos += 4;
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} else {
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// we have an escaped ascii character
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$hexVal = substr ( $source, $pos, 2 );
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$decodedStr .= chr ( hexdec ( $hexVal ) );
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$pos += 2;
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}
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} else {
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$decodedStr .= $charAt;
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$pos++;
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}
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}
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if ( $iconv_to != "UTF-8" ) {
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$decodedStr = iconv( "utf-8", $iconv_to, $decodedStr );
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}
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return $decodedStr;
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}
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/**
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* Function coverts number of utf char into that character.
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* Function taken from: http://www.php.net/manual/en/function.utf8-encode.php#49336
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*
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* @param $num Integer
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* @return utf8char
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*/
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function code2utf( $num ) {
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if ( $num < 128 ) {
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return chr( $num );
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}
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if ( $num < 2048 ) {
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return chr( ( $num >> 6 ) + 192 ) . chr( ( $num&63 ) + 128 );
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}
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if ( $num < 65536 ) {
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return chr( ( $num >> 12 ) + 224 ) . chr( ( ( $num >> 6 )&63 ) + 128 ) . chr( ( $num&63 ) + 128 );
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}
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if ( $num < 2097152 ) {
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return chr( ( $num >> 18 ) + 240 ) . chr( ( ( $num >> 12 )&63 ) + 128 ) . chr( ( ( $num >> 6 )&63 ) + 128 ) . chr( ( $num&63 ) + 128 );
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}
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return '';
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}
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/**
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* Called in some places (currently just extensions)
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* to get the URL for a given file.
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*/
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function wfAjaxGetFileUrl( $file ) {
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$file = wfFindFile( $file );
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if ( !$file || !$file->exists() ) {
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return null;
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}
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$url = $file->getUrl();
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return $url;
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}
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