/**
  * Returns an utf8 encoded Namespace for a Page and input Namespace
  * @param $NS
  * @param $PAGE
  */
 function getNamespaceFromID($NS, &$PAGE)
 {
     global $conf;
     // Check current page - if its an NS add the startpage
     $clean = true;
     resolve_pageid(getNS($NS), $NS, $clean);
     if (!page_exists($NS) && array_pop(explode(':', $NS)) != strtolower($conf['start'])) {
         // Compare to lowercase since clean lowers it.
         $NS .= ':' . $conf['start'];
         resolve_pageid(getNS($NS), $NS, $clean);
     }
     $PAGE = noNS($NS);
     $NS = getNS($NS);
     return utf8_encodeFN(str_replace(':', '/', $NS));
 }

 /**
  * Returns an array of pages with discussion sections, sorted by recent comments
  * Note: also used for content by Feed Plugin
  *
  * @param string $ns
  * @param null|int $num
  * @param string|bool $skipEmpty
  * @return array
  */
 function getThreads($ns, $num = null, $skipEmpty = false)
 {
     global $conf;
     require_once DOKU_INC . 'inc/search.php';
     $dir = $conf['datadir'] . utf8_encodeFN($ns ? '/' . str_replace(':', '/', $ns) : '');
     // returns the list of pages in the given namespace and it's subspaces
     $items = array();
     search($items, $dir, 'search_allpages', array());
     // add pages with comments to result
     $result = array();
     foreach ($items as $item) {
         $id = ($ns ? $ns . ':' : '') . $item['id'];
         // some checks
         $perm = auth_quickaclcheck($id);
         if ($perm < AUTH_READ) {
             continue;
         }
         // skip if no permission
         $file = metaFN($id, '.comments');
         if (!@file_exists($file)) {
             continue;
         }
         // skip if no comments file
         $data = unserialize(io_readFile($file, false));
         $status = $data['status'];
         $number = $data['number'];
         if (!$status || $status == 2 && !$number) {
             continue;
         }
         // skip if comments are off or closed without comments
         if ($skipEmpty == 'y' && $number == 0) {
             continue;
         }
         // skip if discussion is empty and flag is set
         $date = filemtime($file);
         $meta = p_get_metadata($id);
         $result[$date . '_' . $id] = array('id' => $id, 'file' => $file, 'title' => $meta['title'], 'date' => $date, 'user' => $meta['creator'], 'desc' => $meta['description']['abstract'], 'num' => $number, 'comments' => $this->td($id, $number), 'status' => $status, 'perm' => $perm, 'exists' => true, 'anchor' => 'discussion__section');
     }
     // finally sort by time of last comment
     krsort($result);
     if (is_numeric($num)) {
         $result = array_slice($result, 0, $num);
     }
     return $result;
 }

/**
 * Removes empty directories
 *
 * Sends IO_NAMESPACE_DELETED events for 'pages' and 'media' namespaces.
 * Event data:
 * $data[0]    ns: The colon separated namespace path minus the trailing page name.
 * $data[1]    ns_type: 'pages' or 'media' namespace tree.
 *
 * @todo use safemode hack
 * @author  Andreas Gohr <[email protected]>
 * @author Ben Coburn <[email protected]>
 */
function io_sweepNS($id, $basedir = 'datadir')
{
    global $conf;
    $types = array('datadir' => 'pages', 'mediadir' => 'media');
    $ns_type = isset($types[$basedir]) ? $types[$basedir] : false;
    //scan all namespaces
    while (($id = getNS($id)) !== false) {
        $dir = $conf[$basedir] . '/' . utf8_encodeFN(str_replace(':', '/', $id));
        //try to delete dir else return
        if (@rmdir($dir)) {
            if ($ns_type !== false) {
                $data = array($id, $ns_type);
                trigger_event('IO_NAMESPACE_DELETED', $data);
            }
        } else {
            return;
        }
    }
}

 /**
  * AJAX call handler for ACL plugin
  *
  * @param Doku_Event $event  event object by reference
  * @param mixed $param  empty
  * @return void
  */
 public function handle_ajax_call_acl(Doku_Event &$event, $param)
 {
     if ($event->data !== 'plugin_acl') {
         return;
     }
     $event->stopPropagation();
     $event->preventDefault();
     global $ID;
     global $INPUT;
     if (!auth_isadmin()) {
         echo 'for admins only';
         return;
     }
     if (!checkSecurityToken()) {
         echo 'CRSF Attack';
         return;
     }
     $ID = getID();
     /** @var $acl admin_plugin_acl */
     $acl = plugin_load('admin', 'acl');
     $acl->handle();
     $ajax = $INPUT->str('ajax');
     header('Content-Type: text/html; charset=utf-8');
     if ($ajax == 'info') {
         $acl->_html_info();
     } elseif ($ajax == 'tree') {
         $ns = $INPUT->str('ns');
         if ($ns == '*') {
             $ns = '';
         }
         $ns = cleanID($ns);
         $lvl = count(explode(':', $ns));
         $ns = utf8_encodeFN(str_replace(':', '/', $ns));
         $data = $acl->_get_tree($ns, $ns);
         foreach (array_keys($data) as $item) {
             $data[$item]['level'] = $lvl + 1;
         }
         echo html_buildlist($data, 'acl', array($acl, '_html_list_acl'), array($acl, '_html_li_acl'));
     }
 }

 /**
  * List all media files.
  * 
  * Available options are 'recursive' for also including the subnamespaces
  * in the listing, and 'pattern' for filtering the returned files against
  * a regular expression matching their name.
  * 
  * @author Gina Haeussge <[email protected]>
  */
 function listAttachments($ns, $options = array())
 {
     global $conf;
     global $lang;
     $ns = cleanID($ns);
     if (!is_array($options)) {
         $options = array();
     }
     if (!isset($options['recursive'])) {
         $options['recursive'] = false;
     }
     if (auth_quickaclcheck($ns . ':*') >= AUTH_READ) {
         $dir = utf8_encodeFN(str_replace(':', '/', $ns));
         $data = array();
         require_once DOKU_INC . 'inc/search.php';
         search($data, $conf['mediadir'], 'search_media', array('recursive' => $options['recursive']), $dir);
         if (!count($data)) {
             return array();
         }
         $files = array();
         foreach ($data as $item) {
             if (isset($options['pattern']) && !@preg_match($options['pattern'], $item['id'])) {
                 continue;
             }
             $file = array();
             $file['id'] = $item['id'];
             $file['size'] = $item['size'];
             $file['lastModified'] = new IXR_Date($item['mtime']);
             $file['isimg'] = $item['isimg'];
             $file['writable'] = $item['writeable'];
             $file['perms'] = auth_quickaclcheck(getNS($item['id']) . ':*');
             array_push($files, $file);
         }
         return $files;
     } else {
         return new IXR_Error(1, 'You are not allowed to list media files.');
     }
 }

 /**
  * Obtain list of pages and title, based on url parameters
  *
  * @param Doku_Event $event
  * @return string|bool
  */
 protected function collectExportPages(Doku_Event $event)
 {
     global $ACT;
     global $ID;
     global $INPUT;
     global $conf;
     // list of one or multiple pages
     $list = array();
     if ($ACT == 'export_odt') {
         $list[0] = $ID;
         $title = $INPUT->str('book_title');
         if (!$title) {
             $title = p_get_first_heading($ID);
         }
     } elseif ($ACT == 'export_odtns') {
         //check input for title and ns
         if (!($title = $INPUT->str('book_title'))) {
             $this->showPageWithErrorMsg($event, 'needtitle');
             return false;
         }
         $docnamespace = cleanID($INPUT->str('book_ns'));
         if (!@is_dir(dirname(wikiFN($docnamespace . ':dummy')))) {
             $this->showPageWithErrorMsg($event, 'needns');
             return false;
         }
         //sort order
         $order = $INPUT->str('book_order', 'natural', true);
         $sortoptions = array('pagename', 'date', 'natural');
         if (!in_array($order, $sortoptions)) {
             $order = 'natural';
         }
         //search depth
         $depth = $INPUT->int('book_nsdepth', 0);
         if ($depth < 0) {
             $depth = 0;
         }
         //page search
         $result = array();
         $opts = array('depth' => $depth);
         //recursive all levels
         $dir = utf8_encodeFN(str_replace(':', '/', $docnamespace));
         search($result, $conf['datadir'], 'search_allpages', $opts, $dir);
         //sorting
         if (count($result) > 0) {
             if ($order == 'date') {
                 usort($result, array($this, '_datesort'));
             } elseif ($order == 'pagename') {
                 usort($result, array($this, '_pagenamesort'));
             }
         }
         foreach ($result as $item) {
             $list[] = $item['id'];
         }
     } elseif (isset($_COOKIE['list-pagelist']) && !empty($_COOKIE['list-pagelist'])) {
         // Here is $ACT == 'export_odtbook'
         //is in Bookmanager of bookcreator plugin a title given?
         if (!($title = $INPUT->str('book_title'))) {
             $this->showPageWithErrorMsg($event, 'needtitle');
             return false;
         } else {
             $list = explode("|", $_COOKIE['list-pagelist']);
         }
     } else {
         //show empty bookcreator message
         $this->showPageWithErrorMsg($event, 'empty');
         return false;
     }
     $list = array_map('cleanID', $list);
     return array($title, $list);
 }

 /**
  * get to-be directory and filename (without extension)
  *
  * all files are stored in the media directory into 'plugin_abc/<namespaces>/'
  * and the filename is a mixture of abc-id and abc-title (e.g. 42_the_title.abc|...)
  *
  */
 function _getFileBase($src)
 {
     global $ID;
     global $ACT;
     global $conf;
     $mediadir = $conf['mediadir'];
     // where to store the abc media files
     $abcdir = $this->getConf('mediaNS') ? $mediadir . '/' . $this->getConf('mediaNS') : $mediadir;
     io_makeFileDir($abcdir);
     $fileDir = $abcdir . '/' . utf8_encodeFN(str_replace(':', '/', getNS($ID)));
     // the abcID is what comes after the 'X:'
     preg_match("/\\s?X\\s?:(.*?)\n/se", $src, $matchesX);
     $abcID = preg_replace('/\\s?X\\s?:/', '', $matchesX[0]);
     // the abcTitle is what comes after the (first) 'T:'
     preg_match("/\\s?T\\s?:(.*?)\n/se", $src, $matchesT);
     $abcTitle = preg_replace('/\\s?T\\s?:/', '', $matchesT[0]);
     $fileName = cleanID($abcID . "_" . $abcTitle);
     // no double slash when in root namespace
     $slashStr = getNS($ID) ? "/" : "";
     // have different fileBase for previewing
     $previewPrefix = $ACT != 'preview' ? "" : "x";
     $fileBase = $fileDir . $slashStr . $previewPrefix . $fileName;
     // unfortunately abcm2ps seems not to be able to handle
     // file names (realpath) of more than 120 characters
     $realFileBaseLen = strlen(fullpath($abcdir)) - strlen($abcdir) + strlen($fileBase);
     $char_len = 114;
     if ($realFileBaseLen >= $char_len) {
         $truncLen = strlen($fileBase) + ($char_len - $realFileBaseLen);
         $fileBase = substr($fileBase, 0, $truncLen);
     }
     return $fileBase;
 }

 function _exportContainercontent($exporter)
 {
     global $ID, $INFO, $conf;
     if ($ID == $conf['start']) {
         $title = $conf['title'];
     } elseif (isset($INFO['meta']['title'])) {
         $title = $INFO['meta']['title'];
     } else {
         $title = $ID;
     }
     $exporter->setParameters('Container: ' . $title, getAbsUrl(), getAbsUrl() . 'doku.php?', 'utf-8', $this->agentlink);
     // create container object
     $wikicontainer = new SIOCDokuWikiContainer($ID, normalizeUri($exporter->siocURL('container', $ID)));
     /* container is type=wiki */
     if ($ID == $conf['start']) {
         $wikicontainer->isWiki();
     }
     /* sioc:name              */
     if ($INFO['exists']) {
         $wikicontainer->addTitle($INFO['meta']['title']);
     }
     /* has_parent             */
     if ($INFO['namespace']) {
         $wikicontainer->addParent($INFO['namespace']);
     }
     // search next level entries (posts, sub containers) in container
     require_once DOKU_INC . 'inc/search.php';
     $dir = utf8_encodeFN(str_replace(':', '/', $ID));
     $entries = array();
     $posts = array();
     $containers = array();
     search($entries, $conf['datadir'], 'search_index', array('ns' => $ID), $dir);
     foreach ($entries as $entry) {
         if ($entry['type'] === 'f') {
             // wikisite
             $posts[] = $entry;
         } elseif ($entry['type'] === 'd') {
             // sub container
             $containers[] = $entry;
         }
     }
     // without sub content it can't be a container (so it does not exist as a container)
     if (count($posts) + count($containers) == 0) {
         $this->_exit("HTTP/1.0 404 Not Found");
     }
     if (count($posts) > 0) {
         $wikicontainer->addArticles($posts);
     }
     if (count($containers) > 0) {
         $wikicontainer->addContainers($containers);
     }
     //print_r($containers);die();
     // add container to exporter
     $exporter->addObject($wikicontainer);
     return $exporter;
 }

 /**
  * Display a tree menu to select a page or namespace
  *
  * @author Andreas Gohr <[email protected]>
  */
 function _html_explorer()
 {
     global $conf;
     global $ID;
     global $lang;
     $dir = $conf['datadir'];
     $ns = $this->ns;
     if (empty($ns)) {
         $ns = dirname(str_replace(':', '/', $ID));
         if ($ns == '.') {
             $ns = '';
         }
     } elseif ($ns == '*') {
         $ns = '';
     }
     $ns = utf8_encodeFN(str_replace(':', '/', $ns));
     $data = $this->_get_tree($ns);
     // wrap a list with the root level around the other namespaces
     array_unshift($data, array('level' => 0, 'id' => '*', 'type' => 'd', 'open' => 'true', 'label' => '[' . $lang['mediaroot'] . ']'));
     echo html_buildlist($data, 'acl', array($this, '_html_list_acl'), array($this, '_html_li_acl'));
 }

/**
 * returns the full path to the mediafile specified by ID
 *
 * The filename is URL encoded to protect Unicode chars
 *
 * @author Andreas Gohr <[email protected]>
 * @author Kate Arzamastseva <[email protected]>
 *
 * @param string     $id  media id
 * @param string|int $rev empty string or revision timestamp
 * @return string full path
 */
function mediaFN($id, $rev = '')
{
    global $conf;
    $id = cleanID($id);
    $id = str_replace(':', '/', $id);
    if (empty($rev)) {
        $fn = $conf['mediadir'] . '/' . utf8_encodeFN($id);
    } else {
        $ext = mimetype($id);
        $name = substr($id, 0, -1 * strlen($ext[0]) - 1);
        $fn = $conf['mediaolddir'] . '/' . utf8_encodeFN($name . '.' . (int) $rev . '.' . $ext[0]);
    }
    return $fn;
}

}
if (!auth_isadmin()) {
    die('for admins only');
}
if (!checkSecurityToken()) {
    die('CRSF Attack');
}
$ID = getID();
$acl = plugin_load('admin', 'acl');
$acl->handle();
$ajax = $_REQUEST['ajax'];
header('Content-Type: text/html; charset=utf-8');
if ($ajax == 'info') {
    $acl->_html_info();
} elseif ($ajax == 'tree') {
    global $conf;
    global $ID;
    $dir = $conf['datadir'];
    $ns = $_REQUEST['ns'];
    if ($ns == '*') {
        $ns = '';
    }
    $ns = cleanID($ns);
    $lvl = count(explode(':', $ns));
    $ns = utf8_encodeFN(str_replace(':', '/', $ns));
    $data = $acl->_get_tree($ns, $ns);
    foreach (array_keys($data) as $item) {
        $data[$item]['level'] = $lvl + 1;
    }
    echo html_buildlist($data, 'acl', array($acl, '_html_list_acl'), array($acl, '_html_li_acl'));
}

/**
 * Build a tree outline of available media namespaces
 *
 * @author Andreas Gohr <[email protected]>
 */
function bootstrap_media_nstree($ns)
{
    global $conf;
    global $lang;
    // currently selected namespace
    $ns = cleanID($ns);
    if (empty($ns)) {
        global $ID;
        $ns = (string) getNS($ID);
    }
    $ns_dir = utf8_encodeFN(str_replace(':', '/', $ns));
    $data = array();
    search($data, $conf['mediadir'], 'search_index', array('ns' => $ns_dir, 'nofiles' => true));
    // wrap a list with the root level around the other namespaces
    array_unshift($data, array('level' => 0, 'id' => '', 'open' => 'true', 'label' => '[' . $lang['mediaroot'] . ']'));
    // insert the current ns into the hierarchy if it isn't already part of it
    $ns_parts = explode(':', $ns);
    $tmp_ns = '';
    $pos = 0;
    foreach ($ns_parts as $level => $part) {
        if ($tmp_ns) {
            $tmp_ns .= ':' . $part;
        } else {
            $tmp_ns = $part;
        }
        // find the namespace parts or insert them
        while ($data[$pos]['id'] != $tmp_ns) {
            if ($pos >= count($data) || $data[$pos]['level'] <= $level + 1 && strnatcmp(utf8_encodeFN($data[$pos]['id']), utf8_encodeFN($tmp_ns)) > 0) {
                array_splice($data, $pos, 0, array(array('level' => $level + 1, 'id' => $tmp_ns, 'open' => 'true')));
                break;
            }
            ++$pos;
        }
    }
    echo bootstrap_toc_html_buildlist($data, '', 'bootstrap_media_nstree_item', 'bootstrap_media_nstree_li');
}

 /**
  * Gather all photos matching the given criteria
  */
 function _findimages(&$data)
 {
     global $conf;
     $files = array();
     // http URLs are supposed to be media RSS feeds
     if (preg_match('/^https?:\\/\\//i', $data['ns'])) {
         $files = $this->_loadRSS($data['ns']);
         $data['_single'] = false;
     } elseif (preg_match('/^facebook:/i', $data['ns'])) {
         $files = $this->_loadFacebook($data['ns']);
         $data['_single'] = false;
     } else {
         $dir = utf8_encodeFN(str_replace(':', '/', $data['ns']));
         // all possible images for the given namespace (or a single image)
         if (is_file($conf['mediadir'] . '/' . $dir)) {
             require_once DOKU_INC . 'inc/JpegMeta.php';
             $files[] = array('id' => $data['ns'], 'isimg' => preg_match('/\\.(jpe?g|gif|png)$/', $dir), 'file' => basename($dir), 'mtime' => filemtime($conf['mediadir'] . '/' . $dir), 'meta' => new JpegMeta($conf['mediadir'] . '/' . $dir));
             $data['_single'] = true;
         } else {
             $depth = $data['recursive'] ? 0 : 1;
             search($files, $conf['mediadir'], 'search_media', array('depth' => $depth), $dir);
             $data['_single'] = false;
         }
     }
     // done, yet?
     $len = count($files);
     if (!$len) {
         return $files;
     }
     if ($data['single']) {
         return $files;
     }
     // filter images
     for ($i = 0; $i < $len; $i++) {
         if (!$files[$i]['isimg']) {
             unset($files[$i]);
             // this is faster, because RE was done before
         } elseif ($data['filter']) {
             if (!preg_match($data['filter'], noNS($files[$i]['id']))) {
                 unset($files[$i]);
             }
         }
     }
     if ($len < 1) {
         return $files;
     }
     // random?
     if ($data['random']) {
         shuffle($files);
     } else {
         // sort?
         if ($data['sort'] == 'date') {
             usort($files, array($this, '_datesort'));
         } elseif ($data['sort'] == 'mod') {
             usort($files, array($this, '_modsort'));
         } elseif ($data['sort'] == 'title') {
             usort($files, array($this, '_titlesort'));
         }
         // reverse?
         if ($data['reverse']) {
             $files = array_reverse($files);
         }
     }
     // limits and offsets?
     if ($data['offset']) {
         $files = array_slice($files, $data['offset']);
     }
     if ($data['limit']) {
         $files = array_slice($files, 0, $data['limit']);
     }
     return $files;
 }

 /**
  * Get a list of namespaces below the given namespace.
  * Recursively fetches subnamespaces.
  *
  * @param string $topns The top namespace
  * @return array Multi-dimensional array of all namespaces below $tns
  */
 protected function _getNamespaceList($topns = '')
 {
     global $conf;
     $topns = utf8_encodeFN(str_replace(':', '/', $topns));
     $excludes = $this->getConf('addpage_exclude');
     if ($excludes == "") {
         $excludes = array();
     } else {
         $excludes = @explode(';', strtolower($excludes));
     }
     $searchdata = array();
     search($searchdata, $conf['datadir'], 'search_namespaces', array(), $topns);
     $namespaces = array();
     foreach ($searchdata as $ns) {
         foreach ($excludes as $exclude) {
             if (strpos($ns['id'], $exclude) === 0) {
                 continue 2;
             }
         }
         $namespaces[] = $ns['id'];
     }
     return $namespaces;
 }

 /**
  * Build a tree info structure from media or page directories
  *
  * @param int    $type
  * @param string $open The hierarchy to open FIXME not supported yet
  * @param string $base The namespace to start from
  * @return array
  */
 public function tree($type = self::TYPE_PAGES, $open = '', $base = '')
 {
     global $conf;
     $opendir = utf8_encodeFN(str_replace(':', '/', $open));
     $basedir = utf8_encodeFN(str_replace(':', '/', $base));
     $opts = array('pagesonly' => $type == self::TYPE_PAGES, 'listdirs' => true, 'listfiles' => true, 'sneakyacl' => $conf['sneaky_index'], 'showmsg' => false, 'depth' => 1);
     $data = array();
     if ($type == self::TYPE_PAGES) {
         search($data, $conf['datadir'], 'search_universal', $opts, $basedir);
     } elseif ($type == self::TYPE_MEDIA) {
         search($data, $conf['mediadir'], 'search_universal', $opts, $basedir);
     }
     return $data;
 }

/**
 * Return sub index for index view
 *
 * @author Andreas Gohr <[email protected]>
 */
function ajax_index()
{
    global $conf;
    require_once DOKU_INC . 'inc/search.php';
    require_once DOKU_INC . 'inc/html.php';
    // wanted namespace
    $ns = cleanID($_POST['idx']);
    $dir = utf8_encodeFN(str_replace(':', '/', $ns));
    $lvl = count(explode(':', $ns));
    $data = array();
    search($data, $conf['datadir'], 'search_index', array('ns' => $ns), $dir);
    foreach ($data as $item) {
        $item['level'] = $lvl + 1;
        echo html_li_index($item);
        echo '<div class="li">';
        echo html_list_index($item);
        echo '</div>';
        echo '</li>';
    }
}

/**
 * Build a tree outline of available media namespaces
 *
 * @author Andreas Gohr <[email protected]>
 */
function media_nstree($ns)
{
    global $conf;
    global $lang;
    // currently selected namespace
    $ns = cleanID($ns);
    if (empty($ns)) {
        global $ID;
        $ns = dirname(str_replace(':', '/', $ID));
        if ($ns == '.') {
            $ns = '';
        }
    }
    $ns = utf8_encodeFN(str_replace(':', '/', $ns));
    $data = array();
    search($data, $conf['mediadir'], 'search_index', array('ns' => $ns, 'nofiles' => true));
    // wrap a list with the root level around the other namespaces
    array_unshift($data, array('level' => 0, 'id' => '', 'open' => 'true', 'label' => '[' . $lang['mediaroot'] . ']'));
    echo html_buildlist($data, 'idx', 'media_nstree_item', 'media_nstree_li');
}

 /**
  * Get a list of changed files
  */
 function _getSyncList($type = 'pages')
 {
     if (!$this->_connect()) {
         return array();
     }
     global $conf;
     $no = $this->profno;
     $list = array();
     $ns = $this->profiles[$no]['ns'];
     // get remote file list
     if ($type == 'pages') {
         $ok = $this->client->query('dokuwiki.getPagelist', $ns, array('depth' => (int) $this->profiles[$no]['depth'], 'hash' => true));
     } else {
         $ok = $this->client->query('wiki.getAttachments', $ns, array('depth' => (int) $this->profiles[$no]['depth'], 'hash' => true));
     }
     if (!$ok) {
         msg('Failed to fetch remote file list. ' . $this->client->getErrorMessage(), -1);
         return false;
     }
     $remote = $this->client->getResponse();
     // put into synclist
     foreach ($remote as $item) {
         $list[$item['id']]['remote'] = $item;
         unset($list[$item['id']]['remote']['id']);
     }
     unset($remote);
     // get local file list
     $local = array();
     $dir = utf8_encodeFN(str_replace(':', '/', $ns));
     require_once DOKU_INC . 'inc/search.php';
     if ($type == 'pages') {
         search($local, $conf['datadir'], 'search_allpages', array('depth' => (int) $this->profiles[$no]['depth'], 'hash' => true), $dir);
     } else {
         search($local, $conf['mediadir'], 'search_media', array('depth' => (int) $this->profiles[$no]['depth'], 'hash' => true), $dir);
     }
     // put into synclist
     foreach ($local as $item) {
         // skip identical files
         if ($list[$item['id']]['remote']['hash'] == $item['hash']) {
             unset($list[$item['id']]);
             continue;
         }
         $list[$item['id']]['local'] = $item;
         unset($list[$item['id']]['local']['id']);
     }
     unset($local);
     ksort($list);
     return $list;
 }

/**
 * returns the full path to the mediafile specified by ID
 *
 * The filename is URL encoded to protect Unicode chars
 *
 * @author Andreas Gohr <[email protected]>
 */
function mediaFN($id)
{
    global $conf;
    $id = cleanID($id);
    $id = str_replace(':', '/', $id);
    $fn = $conf['mediadir'] . '/' . utf8_encodeFN($id);
    return $fn;
}

//.........这里部分代码省略.........
         //Search optional namespaces
         if (!empty($opts['nss'])) {
             $nss = $opts['nss'];
             for ($a = 0; $a < count($nss); $a++) {
                 if (preg_match("/^" . $id . "(\$|:.+)/i", $nss[$a][0], $match)) {
                     //It contains an optional namespace
                     $isopen = true;
                 } elseif (preg_match("/^" . $nss[$a][0] . "(:.*)/i", $id, $match)) {
                     //It's inside an optional namespace
                     if ($nss[$a][1] == -1 || substr_count($match[1], ":") < $nss[$a][1]) {
                         $isopen = true;
                     } else {
                         $isopen = false;
                     }
                 }
             }
         }
         if ($opts['nons']) {
             return $isopen;
         } elseif ($opts['max'] > 0 && !$isopen && $lvl >= $opts['max']) {
             $isopen = false;
             //Stop recursive searching
             $return = false;
             //change type
             $type = "l";
         } elseif ($opts['js']) {
             $return = true;
         } else {
             $return = $isopen;
         }
         //Set title and headpage
         $title = $this->_getTitle($id, $headpage, $hns);
         if (!$hns && $opts['nopg']) {
             $hns = $id . ":" . $conf['start'];
         }
     } else {
         //Nopg.Dont show pages
         if ($opts['nopg']) {
             return false;
         }
         $return = true;
         //Nons.Set all pages at first level
         if ($opts['nons']) {
             $lvl = 1;
         }
         //don't add
         if (substr($file, -4) != '.txt') {
             return false;
         }
         //check hiddens and acl
         if (isHiddenPage($id) || auth_quickaclcheck($id) < AUTH_READ) {
             return false;
         }
         //Skip files in plugin conf
         if (!empty($skip_file) && preg_match($skip_file, $id)) {
             return false;
         }
         //Skip headpages to hide
         if (!$opts['nons'] && !empty($headpage) && $opts['hide_headpage']) {
             if ($id == $conf['start']) {
                 return false;
             }
             $ahp = explode(",", $headpage);
             foreach ($ahp as $hp) {
                 switch ($hp) {
                     case ":inside:":
                         if (noNS($id) == noNS(getNS($id))) {
                             return false;
                         }
                         break;
                     case ":same:":
                         if (@is_dir(dirname(wikiFN($id)) . "/" . utf8_encodeFN(noNS($id)))) {
                             return false;
                         }
                         break;
                         //it' s an inside start
                     //it' s an inside start
                     case ":start:":
                         if (noNS($id) == $conf['start']) {
                             return false;
                         }
                         break;
                     default:
                         if (noNS($id) == cleanID($hp)) {
                             return false;
                         }
                 }
             }
         }
         //Set title
         if (!$conf['useheading'] || !($title = p_get_first_heading($id, FALSE))) {
             $title = noNS($id);
         }
         $title = htmlspecialchars($title, ENT_QUOTES);
     }
     $item = array('id' => $id, 'type' => $type, 'level' => $lvl, 'open' => $isopen, 'title' => $title, 'hns' => $hns, 'file' => $file, 'return' => $return);
     $item['sort'] = $this->_setorder($item);
     $data[] = $item;
     return $return;
 }