/**
* Returns the pages that use a given media file
*
* Does a quick lookup with the fulltext index, then
* evaluates the instructions of the found pages
*
* Aborts after $max found results
*/
function ft_mediause($id, $max)
{
if (!$max) {
$max = 1;
}
// need to find at least one
$result = array();
// quick lookup of the mediafile
// FIXME use metadata key lookup
$media = noNS($id);
$matches = idx_lookup(idx_tokenizer($media));
$docs = array_keys(ft_resultCombine(array_values($matches)));
if (!count($docs)) {
return $result;
}
// go through all found pages
$found = 0;
$pcre = preg_quote($media, '/');
foreach ($docs as $doc) {
$ns = getNS($doc);
preg_match_all('/\\{\\{([^|}]*' . $pcre . '[^|}]*)(|[^}]+)?\\}\\}/i', rawWiki($doc), $matches);
foreach ($matches[1] as $img) {
$img = trim($img);
if (preg_match('/^https?:\\/\\//i', $img)) {
continue;
}
// skip external images
list($img) = explode('?', $img);
// remove any parameters
resolve_mediaid($ns, $img, $exists);
// resolve the possibly relative img
if ($img == $id) {
// we have a match
$result[] = $doc;
$found++;
break;
}
}
if ($found >= $max) {
break;
}
}
sort($result);
return $result;
}
/**
* Returns a list of matching documents for the given query
*
* @author Andreas Gohr <*****@*****.**>
* @author Kazutaka Miyasaka <*****@*****.**>
*/
function _ft_pageSearch(&$data)
{
$Indexer = idx_get_indexer();
// parse the given query
$q = ft_queryParser($Indexer, $data['query']);
$data['highlight'] = $q['highlight'];
if (empty($q['parsed_ary'])) {
return array();
}
// lookup all words found in the query
$lookup = $Indexer->lookup($q['words']);
// get all pages in this dokuwiki site (!: includes nonexistent pages)
$pages_all = array();
foreach ($Indexer->getPages() as $id) {
$pages_all[$id] = 0;
// base: 0 hit
}
// process the query
$stack = array();
foreach ($q['parsed_ary'] as $token) {
switch (substr($token, 0, 3)) {
case 'W+:':
case 'W-:':
case 'W_:':
// word
$word = substr($token, 3);
$stack[] = (array) $lookup[$word];
break;
case 'P+:':
case 'P-:':
// phrase
$phrase = substr($token, 3);
// since phrases are always parsed as ((W1)(W2)...(P)),
// the end($stack) always points the pages that contain
// all words in this phrase
$pages = end($stack);
$pages_matched = array();
foreach (array_keys($pages) as $id) {
$evdata = array('id' => $id, 'phrase' => $phrase, 'text' => rawWiki($id));
$evt = new Doku_Event('FULLTEXT_PHRASE_MATCH', $evdata);
if ($evt->advise_before() && $evt->result !== true) {
$text = utf8_strtolower($evdata['text']);
if (strpos($text, $phrase) !== false) {
$evt->result = true;
}
}
$evt->advise_after();
if ($evt->result === true) {
$pages_matched[$id] = 0;
// phrase: always 0 hit
}
}
$stack[] = $pages_matched;
break;
case 'N+:':
case 'N-:':
// namespace
$ns = substr($token, 3);
$pages_matched = array();
foreach (array_keys($pages_all) as $id) {
if (strpos($id, $ns) === 0) {
$pages_matched[$id] = 0;
// namespace: always 0 hit
}
}
$stack[] = $pages_matched;
break;
case 'AND':
// and operation
list($pages1, $pages2) = array_splice($stack, -2);
$stack[] = ft_resultCombine(array($pages1, $pages2));
break;
case 'OR':
// or operation
list($pages1, $pages2) = array_splice($stack, -2);
$stack[] = ft_resultUnite(array($pages1, $pages2));
break;
case 'NOT':
// not operation (unary)
$pages = array_pop($stack);
$stack[] = ft_resultComplement(array($pages_all, $pages));
break;
}
}
$docs = array_pop($stack);
if (empty($docs)) {
return array();
}
// check: settings, acls, existence
foreach (array_keys($docs) as $id) {
if (isHiddenPage($id) || auth_quickaclcheck($id) < AUTH_READ || !page_exists($id, '', false)) {
unset($docs[$id]);
}
}
// sort docs by count
arsort($docs);
return $docs;
}
