158 lines
3.9 KiB
PHP
158 lines
3.9 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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if ( $num < 2048 )
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return chr( ( $num >> 6 ) + 192 ) . chr( ( $num&63 ) + 128 );
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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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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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return '';
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}
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/**
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* Called for AJAX watch/unwatch requests.
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* @param $pagename Prefixed title string for page to watch/unwatch
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* @param $watch String 'w' to watch, 'u' to unwatch
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* @return String '<w#>' or '<u#>' on successful watch or unwatch,
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* respectively, followed by an HTML message to display in the alert box; or
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* '<err#>' on error
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*/
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function wfAjaxWatch( $pagename = "", $watch = "" ) {
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if ( wfReadOnly() ) {
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// redirect to action=(un)watch, which will display the database lock
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// message
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return '<err#>';
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}
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if ( 'w' !== $watch && 'u' !== $watch ) {
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return '<err#>';
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}
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$watch = 'w' === $watch;
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$title = Title::newFromDBkey( $pagename );
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if ( !$title ) {
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// Invalid title
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return '<err#>';
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}
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$article = new Article( $title );
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$watching = $title->userIsWatching();
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if ( $watch ) {
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if ( !$watching ) {
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$dbw = wfGetDB( DB_MASTER );
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$dbw->begin();
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$ok = $article->doWatch();
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$dbw->commit();
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}
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} else {
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if ( $watching ) {
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$dbw = wfGetDB( DB_MASTER );
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$dbw->begin();
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$ok = $article->doUnwatch();
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$dbw->commit();
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}
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}
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// Something stopped the change
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if ( isset( $ok ) && !$ok ) {
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return '<err#>';
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}
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if ( $watch ) {
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return '<w#>' . wfMsgExt( 'addedwatchtext', array( 'parse' ), $title->getPrefixedText() );
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} else {
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return '<u#>' . wfMsgExt( 'removedwatchtext', array( 'parse' ), $title->getPrefixedText() );
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}
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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 thumbnail URL for a given file at a given resolution.
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*/
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function wfAjaxGetThumbnailUrl( $file, $width, $height ) {
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$file = wfFindFile( $file );
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if ( !$file || !$file->exists() )
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return null;
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$url = $file->getThumbnail( $width, $height )->url;
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return $url;
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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 || !$file->exists() )
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return null;
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$url = $file->getUrl();
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return $url;
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}
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