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Diffstat (limited to 'includes/AjaxFunctions.php')
| -rw-r--r-- | includes/AjaxFunctions.php | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/includes/AjaxFunctions.php b/includes/AjaxFunctions.php new file mode 100644 index 00000000..4387a607 --- /dev/null +++ b/includes/AjaxFunctions.php @@ -0,0 +1,157 @@ +<?php + +if( !defined( 'MEDIAWIKI' ) ) + die( 1 ); + +require_once('WebRequest.php'); + +/** + * Function converts an Javascript escaped string back into a string with + * specified charset (default is UTF-8). + * Modified function from http://pure-essence.net/stuff/code/utf8RawUrlDecode.phps + * + * @param $source String escaped with Javascript's escape() function + * @param $iconv_to String destination character set will be used as second paramether in the iconv function. Default is UTF-8. + * @return string + */ +function js_unescape($source, $iconv_to = 'UTF-8') { + $decodedStr = ''; + $pos = 0; + $len = strlen ($source); + while ($pos < $len) { + $charAt = substr ($source, $pos, 1); + if ($charAt == '%') { + $pos++; + $charAt = substr ($source, $pos, 1); + if ($charAt == 'u') { + // we got a unicode character + $pos++; + $unicodeHexVal = substr ($source, $pos, 4); + $unicode = hexdec ($unicodeHexVal); + $decodedStr .= code2utf($unicode); + $pos += 4; + } + else { + // we have an escaped ascii character + $hexVal = substr ($source, $pos, 2); + $decodedStr .= chr (hexdec ($hexVal)); + $pos += 2; + } + } + else { + $decodedStr .= $charAt; + $pos++; + } + } + + if ($iconv_to != "UTF-8") { + $decodedStr = iconv("UTF-8", $iconv_to, $decodedStr); + } + + return $decodedStr; +} + +/** + * Function coverts number of utf char into that character. + * Function taken from: http://sk2.php.net/manual/en/function.utf8-encode.php#49336 + * + * @param $num Integer + * @return utf8char + */ +function code2utf($num){ + if ( $num<128 ) + return chr($num); + if ( $num<2048 ) + return chr(($num>>6)+192).chr(($num&63)+128); + if ( $num<65536 ) + return chr(($num>>12)+224).chr((($num>>6)&63)+128).chr(($num&63)+128); + if ( $num<2097152 ) + return chr(($num>>18)+240).chr((($num>>12)&63)+128).chr((($num>>6)&63)+128) .chr(($num&63)+128); + return ''; +} + +class AjaxCachePolicy { + var $policy; + + function AjaxCachePolicy( $policy = null ) { + $this->policy = $policy; + } + + function setPolicy( $policy ) { + $this->policy = $policy; + } + + function writeHeader() { + header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); + if ( is_null( $this->policy ) ) { + // Bust cache in the head + header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past + // always modified + header ("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1 + header ("Pragma: no-cache"); // HTTP/1.0 + } else { + header ("Expires: " . gmdate( "D, d M Y H:i:s", time() + $this->policy ) . " GMT"); + header ("Cache-Control: s-max-age={$this->policy},public,max-age={$this->policy}"); + } + } +} + + +function wfSajaxSearch( $term ) { + global $wgContLang, $wgAjaxCachePolicy, $wgOut; + $limit = 16; + + $l = new Linker; + + $term = str_replace( ' ', '_', $wgContLang->ucfirst( + $wgContLang->checkTitleEncoding( $wgContLang->recodeInput( js_unescape( $term ) ) ) + ) ); + + if ( strlen( str_replace( '_', '', $term ) )<3 ) + return; + + $wgAjaxCachePolicy->setPolicy( 30*60 ); + + $db =& wfGetDB( DB_SLAVE ); + $res = $db->select( 'page', 'page_title', + array( 'page_namespace' => 0, + "page_title LIKE '". $db->strencode( $term) ."%'" ), + "wfSajaxSearch", + array( 'LIMIT' => $limit+1 ) + ); + + $r = ""; + + $i=0; + while ( ( $row = $db->fetchObject( $res ) ) && ( ++$i <= $limit ) ) { + $nt = Title::newFromDBkey( $row->page_title ); + $r .= '<li>' . $l->makeKnownLinkObj( $nt ) . "</li>\n"; + } + if ( $i > $limit ) { + $more = '<i>' . $l->makeKnownLink( $wgContLang->specialPage( "Allpages" ), + wfMsg('moredotdotdot'), + "namespace=0&from=" . wfUrlEncode ( $term ) ) . + '</i>'; + } else { + $more = ''; + } + + $subtitlemsg = ( Title::newFromText($term) ? 'searchsubtitle' : 'searchsubtitleinvalid' ); + $subtitle = $wgOut->parse( wfMsg( $subtitlemsg, wfEscapeWikiText($term) ) ); + + $term = htmlspecialchars( $term ); + return '<div style="float:right; border:solid 1px black;background:gainsboro;padding:2px;"><a onclick="Searching_Hide_Results();">' + . wfMsg( 'hideresults' ) . '</a></div>' + . '<h1 class="firstHeading">'.wfMsg('search') + . '</h1><div id="contentSub">'. $subtitle . '</div><ul><li>' + . $l->makeKnownLink( $wgContLang->specialPage( 'Search' ), + wfMsg( 'searchcontaining', $term ), + "search=$term&fulltext=Search" ) + . '</li><li>' . $l->makeKnownLink( $wgContLang->specialPage( 'Search' ), + wfMsg( 'searchnamed', $term ) , + "search=$term&go=Go" ) + . "</li></ul><h2>" . wfMsg( 'articletitles', $term ) . "</h2>" + . '<ul>' .$r .'</ul>'.$more; +} + +?> |