*
* Add OpenSearch autodiscovery & suggestions to PmWiki
*
* Developed and tested using PmWiki 2.2.0,
*
* To install, first add the following to your config file,
* adjusted for your configuration:
include_once("$FarmD/cookbook/opensearch.php");
* For more information, please see the online documentation at
* http://www.pmwiki.org/wiki/Cookbook/OpenSearch
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License,
* Version 2, as published by the Free Software Foundation.
* http://www.gnu.org/copyleft/gpl.html
*/
$RecipeInfo['OpenSearch']['Version'] = '2009-02-20';
SDV( $OpenSearchUrl, $ScriptUrl );
$HTMLHeaderFmt['opensearch'] =
"\n';
if ( !in_array( $action, array( 'search', 'suggest', 'opensearchdescription' ) ) ) return;
$HandleActions['search'] = 'HandleSuggestedSearch'; // default 'HandleSearchA'
$HandleActions['suggest'] = 'HandleSuggest';
$HandleAuth['suggest'] = 'read';
$HandleActions['opensearchdescription'] = 'HandleOpenSearchDescription';
$HandleAuth['opensearchdescription'] = 'read';
function HandleSuggestedSearch( $pagename, $level = 'read' ) {
$rq = htmlspecialchars(stripmagic(@$_REQUEST['q']), ENT_NOQUOTES);
if ( $rq && ( substr_count( $rq, '.' ) == 1 ) && PageExists($rq) ) Redirect($rq);
HandleSearchA( $pagename, $level );
}
function HandleOpenSearchDescription( $pagename, $level = 'read' ) {
global $WikiTitle, $Charset, $OpenSearchData, $OpenSearchUrl;
header("Content-type: application/opensearchdescription+xml; charset=UTF-8");
// see http://www.opensearch.org/Specifications/OpenSearch/1.1 for all valid elements
SDVA( $OpenSearchData, array(
'ShortName' => substr( $WikiTitle, 0, 16 ),
'Description' => "Search $WikiTitle"
) );
echo "\n
$ScriptUrl\n";
foreach( $OpenSearchData as $k => $v ) {
if ( $Charset != 'UTF-8' ) $v = mb_convert_encoding( $v, 'UTF-8', $Charset );
if ( ( $k == 'Image' ) && !strcasecmp( substr( $v, -3 ), 'ico' ) )
echo "\t".''.$v."\n";
else echo "\t<$k>$v\n";
}
echo '';
}
function HandleSuggest( $pagename, $level = 'read' ) {
global $Charset, $SearchPatterns, $OpenSearchSuggestMaxResults;
SDV( $OpenSearchSuggestMaxResults, 10 );
$rq = htmlspecialchars( stripmagic(@$_REQUEST['q']), ENT_NOQUOTES );
$json[0] = $rq;
$json[1] = array();
if ($rq) {
$ls = ListPages( "/$rq/i" );
if ($ls) {
sort($ls);
$group_begins = preg_grep( "/^$rq/i", $ls );
$name_begins = preg_grep( "/\.$rq/i", $ls );
$casematch = preg_grep( "/^$rq/", $ls );
$doubles = strlen($rq)>1 ? preg_grep( "/$rq.*$rq/i", $ls ) : array();
$ls = array_slice(array_unique(array_merge( $group_begins, $name_begins, $casematch, $doubles, $ls )), 0, $OpenSearchSuggestMaxResults );
$json[1] = $ls;
foreach ( array( 2=>'$Title', 3=>'$PageUrl' ) as $i => $var ) foreach( $ls as $pn ) {
$json[$i][] = PageVar( $pagename, $var, $pn );
}
}
}
header("Content-type: application/x-suggestions+json; charset=$Charset");
//echo json_encode($json);
echo '[';
foreach( $json as $i => $a ) {
if ($i) echo ',';
$a = str_replace( array('\\','"'), array('\\\\','\\"'), $a );
if (is_array($a)) {
echo '[';
foreach( $a as $j => $s ) {
if ($j) echo ',';
echo '"'.$s.'"';
}
echo ']';
} else echo '"'.$a.'"';
}
echo ']';
exit;
}