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<?php
/**
* @package MediaWiki
* @addtogroup Ajax
*/
if( !defined( 'MEDIAWIKI' ) ) {
die( 1 );
}
/**
* 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 '';
}
define( 'AJAX_SEARCH_VERSION', 2 ); //AJAX search cache version
function wfSajaxSearch( $term ) {
global $wgContLang, $wgOut, $wgUser, $wgCapitalLinks, $wgMemc;
$limit = 16;
$sk = $wgUser->getSkin();
$output = '';
$term = trim( $term );
$term = $wgContLang->checkTitleEncoding( $wgContLang->recodeInput( js_unescape( $term ) ) );
if ( $wgCapitalLinks )
$term = $wgContLang->ucfirst( $term );
$term_title = Title::newFromText( $term );
$memckey = $term_title ? wfMemcKey( 'ajaxsearch', md5( $term_title->getFullText() ) ) : wfMemcKey( 'ajaxsearch', md5( $term ) );
$cached = $wgMemc->get($memckey);
if( is_array( $cached ) && $cached['version'] == AJAX_SEARCH_VERSION ) {
$response = new AjaxResponse( $cached['html'] );
$response->setCacheDuration( 30*60 );
return $response;
}
$r = $more = '';
$canSearch = true;
$results = PrefixSearch::titleSearch( $term, $limit + 1 );
foreach( array_slice( $results, 0, $limit ) as $titleText ) {
$r .= '<li>' . $sk->makeKnownLink( $titleText ) . "</li>\n";
}
// Hack to check for specials
if( $results ) {
$t = Title::newFromText( $results[0] );
if( $t && $t->getNamespace() == NS_SPECIAL ) {
$canSearch = false;
if( count( $results ) > $limit ) {
$more = '<i>' .
$sk->makeKnownLinkObj(
SpecialPage::getTitleFor( 'Specialpages' ),
wfMsgHtml( 'moredotdotdot' ) ) .
'</i>';
}
} else {
if( count( $results ) > $limit ) {
$more = '<i>' .
$sk->makeKnownLinkObj(
SpecialPage::getTitleFor( "Allpages", $term ),
wfMsgHtml( 'moredotdotdot' ) ) .
'</i>';
}
}
}
$valid = (bool) $term_title;
$term_url = urlencode( $term );
$term_diplay = htmlspecialchars( $valid ? $term_title->getFullText() : $term );
$subtitlemsg = ( $valid ? 'searchsubtitle' : 'searchsubtitleinvalid' );
$subtitle = wfMsgWikiHtml( $subtitlemsg, $term_diplay );
$html = '<div id="searchTargetHide"><a onclick="Searching_Hide_Results();">'
. wfMsgHtml( 'hideresults' ) . '</a></div>'
. '<h1 class="firstHeading">'.wfMsgHtml('search')
. '</h1><div id="contentSub">'. $subtitle . '</div>';
if( $canSearch ) {
$html .= '<ul><li>'
. $sk->makeKnownLink( $wgContLang->specialPage( 'Search' ),
wfMsgHtml( 'searchcontaining', $term_diplay ),
"search={$term_url}&fulltext=Search" )
. '</li><li>' . $sk->makeKnownLink( $wgContLang->specialPage( 'Search' ),
wfMsgHtml( 'searchnamed', $term_diplay ) ,
"search={$term_url}&go=Go" )
. "</li></ul>";
}
if( $r ) {
$html .= "<h2>" . wfMsgHtml( 'articletitles', $term_diplay ) . "</h2>"
. '<ul>' .$r .'</ul>' . $more;
}
$wgMemc->set( $memckey, array( 'version' => AJAX_SEARCH_VERSION, 'html' => $html ), 30 * 60 );
$response = new AjaxResponse( $html );
$response->setCacheDuration( 30*60 );
return $response;
}
/**
* Called for AJAX watch/unwatch requests.
* @param $pagename Prefixed title string for page to watch/unwatch
* @param $watch String 'w' to watch, 'u' to unwatch
* @return String '<w#>' or '<u#>' on successful watch or unwatch,
* respectively, followed by an HTML message to display in the alert box; or
* '<err#>' on error
*/
function wfAjaxWatch($pagename = "", $watch = "") {
if(wfReadOnly()) {
// redirect to action=(un)watch, which will display the database lock
// message
return '<err#>';
}
if('w' !== $watch && 'u' !== $watch) {
return '<err#>';
}
$watch = 'w' === $watch;
$title = Title::newFromDBkey($pagename);
if(!$title) {
// Invalid title
return '<err#>';
}
$article = new Article($title);
$watching = $title->userIsWatching();
if($watch) {
if(!$watching) {
$dbw = wfGetDB(DB_MASTER);
$dbw->begin();
$article->doWatch();
$dbw->commit();
}
} else {
if($watching) {
$dbw = wfGetDB(DB_MASTER);
$dbw->begin();
$article->doUnwatch();
$dbw->commit();
}
}
if( $watch ) {
return '<w#>'.wfMsgExt( 'addedwatchtext', array( 'parse' ), $title->getPrefixedText() );
} else {
return '<u#>'.wfMsgExt( 'removedwatchtext', array( 'parse' ), $title->getPrefixedText() );
}
}
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