PHP getCacheName函数代码示例

 /**
  * Executed after performing the action hooks
  *
  * Increases counter and purge cache
  */
 public function after_action()
 {
     if ($this->autoinc) {
         global $ID;
         p_set_metadata($ID, array('bureaucracy' => array($this->get_key() => $this->opt['value'] + 1)));
         // Force rerendering by removing the instructions cache file
         $cache_fn = getCacheName(wikiFN($ID) . $_SERVER['HTTP_HOST'] . $_SERVER['SERVER_PORT'], '.' . 'i');
         if (file_exists($cache_fn)) {
             unlink($cache_fn);
         }
     }
 }

 /**
  * Constructor
  *
  * Loads the cache
  */
 public function __construct()
 {
     global $conf;
     $this->logfile = fullpath($conf['metadir'] . '/' . $this->getConf('accesslog'));
     // file not found? assume absolute path
     if (!file_exists($this->logfile)) {
         $this->logfile = $this->getConf('accesslog');
     }
     // load the cache file
     $this->logcache = getCacheName($this->getConf('accesslog'), '.statdisplay');
     if (file_exists($this->logcache)) {
         $this->logdata = unserialize(io_readFile($this->logcache, false));
     }
 }

 /**
  * Check for pages changes and eventually purge cache.
  *
  * @author Samuele Tognini <samuele@samuele.netsons.org>
  *
  * @param Doku_Event $event
  * @param mixed      $param not defined
  */
 function _purgecache(&$event, $param)
 {
     global $ID;
     global $conf;
     /** @var cache_parser $cache */
     $cache =& $event->data;
     if (!isset($cache->page)) {
         return;
     }
     //purge only xhtml cache
     if ($cache->mode != "xhtml") {
         return;
     }
     //Check if it is an pagequery page
     if (!p_get_metadata($ID, 'pagequery')) {
         return;
     }
     $aclcache = $this->getConf('aclcache');
     if ($conf['useacl']) {
         $newkey = false;
         if ($aclcache == 'user') {
             //Cache per user
             if ($_SERVER['REMOTE_USER']) {
                 $newkey = $_SERVER['REMOTE_USER'];
             }
         } else {
             if ($aclcache == 'groups') {
                 //Cache per groups
                 global $INFO;
                 if ($INFO['userinfo']['grps']) {
                     $newkey = implode('#', $INFO['userinfo']['grps']);
                 }
             }
         }
         if ($newkey) {
             $cache->key .= "#" . $newkey;
             $cache->cache = getCacheName($cache->key, $cache->ext);
         }
     }
     //Check if a page is more recent than purgefile.
     if (@filemtime($cache->cache) < @filemtime($conf['cachedir'] . '/purgefile')) {
         $event->preventDefault();
         $event->stopPropagation();
         $event->result = false;
     }
 }

 /**
  * For pages containing an aggregation, add the last modified date of the database itself
  * to the cache dependencies
  *
  * @param Doku_Event $event event object by reference
  * @param mixed $param [the parameters passed as fifth argument to register_hook() when this
  *                           handler was registered]
  * @return bool
  */
 public function handle_cache_aggregation(Doku_Event $event, $param)
 {
     global $INPUT;
     /** @var \cache_parser $cache */
     $cache = $event->data;
     if ($cache->mode != 'xhtml') {
         return true;
     }
     if (!$cache->page) {
         return true;
     }
     // not a page cache
     $meta = p_get_metadata($cache->page, 'plugin struct');
     if (isset($meta['hasaggregation'])) {
         /** @var helper_plugin_struct_db $db */
         $db = plugin_load('helper', 'struct_db');
         // cache depends on last database save
         $cache->depends['files'][] = $db->getDB()->getAdapter()->getDbFile();
         // dynamic renders should never overwrite the default page cache
         // we need this in additon to handle_cache_dynamic() below because we can only
         // influence if a cache is used, not that it will be written
         if ($INPUT->has(SearchConfigParameters::$PARAM_FILTER) || $INPUT->has(SearchConfigParameters::$PARAM_OFFSET) || $INPUT->has(SearchConfigParameters::$PARAM_SORT)) {
             $cache->key .= 'dynamic';
         }
         // cache depends on today's date
         if ($meta['hasaggregation'] & SearchConfig::$CACHE_DATE) {
             $oldage = $cache->depends['age'];
             $newage = time() - mktime(0, 0, 1);
             // time since first second today
             $cache->depends['age'] = min($oldage, $newage);
         }
         // cache depends on current user
         if ($meta['hasaggregation'] & SearchConfig::$CACHE_USER) {
             $cache->key .= ';' . $INPUT->server->str('REMOTE_USER');
         }
         // rebuild cachename
         $cache->cache = getCacheName($cache->key, $cache->ext);
     }
     return true;
 }

/**
 * Check for new messages from upstream
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function checkUpdateMessages()
{
    global $conf;
    global $INFO;
    global $updateVersion;
    if (!$conf['updatecheck']) {
        return;
    }
    if ($conf['useacl'] && !$INFO['ismanager']) {
        return;
    }
    $cf = getCacheName($updateVersion, '.updmsg');
    $lm = @filemtime($cf);
    // check if new messages needs to be fetched
    if ($lm < time() - 60 * 60 * 24 || $lm < @filemtime(DOKU_INC . DOKU_SCRIPT)) {
        @touch($cf);
        dbglog("checkUpdateMessages(): downloading messages to " . $cf);
        $http = new DokuHTTPClient();
        $http->timeout = 12;
        $resp = $http->get(DOKU_MESSAGEURL . $updateVersion);
        if (is_string($resp) && ($resp == "" || substr(trim($resp), -1) == '%')) {
            // basic sanity check that this is either an empty string response (ie "no messages")
            // or it looks like one of our messages, not WiFi login or other interposed response
            io_saveFile($cf, $resp);
        } else {
            dbglog("checkUpdateMessages(): unexpected HTTP response received");
        }
    } else {
        dbglog("checkUpdateMessages(): messages up to date");
    }
    $data = io_readFile($cf);
    // show messages through the usual message mechanism
    $msgs = explode("\n%\n", $data);
    foreach ($msgs as $msg) {
        if ($msg) {
            msg($msg, 2);
        }
    }
}

 /**
  * Gets a local scalable copy of the SVG with its dimensions
  *
  * @param $id
  * @param int $cachetime
  * @return bool|array either array($file, $width, $height) or false if no cache available
  */
 public function getAdjustedSVG($id, $cachetime = -1)
 {
     $info = $this->getInfo();
     $cachefile = getCacheName($id . $info['date'], '.svg');
     $cachedate = @filemtime($cachefile);
     if ($cachedate && $cachetime < time() - $cachedate) {
         list($width, $height) = $this->readSVGsize($cachefile);
         return array($cachefile, $width, $height);
     }
     // still here, create a new cache file
     if (preg_match('/^https?:\\/\\//i', $id)) {
         io_download($id, $cachefile);
         #FIXME make max size configurable
     } else {
         @copy(mediaFN($id), $cachefile);
     }
     clearstatcache(false, $cachefile);
     // adjust the size in the cache file
     if (file_exists($cachefile)) {
         list($width, $height) = $this->readSVGsize($cachefile, true);
         return array($cachefile, $width, $height);
     }
     return false;
 }

/**
 * Output all needed JavaScript
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function js_out()
{
    global $conf;
    global $lang;
    global $config_cascade;
    // The generated script depends on some dynamic options
    $cache = getCacheName('scripts' . $_SERVER['HTTP_HOST'] . $_SERVER['SERVER_PORT'], '.js');
    // array of core files
    $files = array(DOKU_INC . 'lib/scripts/helpers.js', DOKU_INC . 'lib/scripts/events.js', DOKU_INC . 'lib/scripts/delay.js', DOKU_INC . 'lib/scripts/cookie.js', DOKU_INC . 'lib/scripts/script.js', DOKU_INC . 'lib/scripts/tw-sack.js', DOKU_INC . 'lib/scripts/ajax.js', DOKU_INC . 'lib/scripts/index.js', DOKU_INC . 'lib/scripts/drag.js', DOKU_INC . 'lib/scripts/textselection.js', DOKU_INC . 'lib/scripts/toolbar.js', DOKU_INC . 'lib/scripts/edit.js', DOKU_INC . 'lib/scripts/linkwiz.js', DOKU_INC . 'lib/scripts/media.js', DOKU_INC . 'lib/scripts/subscriptions.js', DOKU_TPLINC . 'script.js');
    // add possible plugin scripts and userscript
    $files = array_merge($files, js_pluginscripts());
    if (isset($config_cascade['userscript']['default'])) {
        $files[] = $config_cascade['userscript']['default'];
    }
    // check cache age & handle conditional request
    header('Cache-Control: public, max-age=3600');
    header('Pragma: public');
    if (js_cacheok($cache, $files)) {
        http_conditionalRequest(filemtime($cache));
        if ($conf['allowdebug']) {
            header("X-CacheUsed: {$cache}");
        }
        // finally send output
        if ($conf['gzip_output'] && http_gzip_valid($cache)) {
            header('Vary: Accept-Encoding');
            header('Content-Encoding: gzip');
            readfile($cache . ".gz");
        } else {
            if (!http_sendfile($cache)) {
                readfile($cache);
            }
        }
        return;
    } else {
        http_conditionalRequest(time());
    }
    // start output buffering and build the script
    ob_start();
    // add some global variables
    print "var DOKU_BASE   = '" . DOKU_BASE . "';";
    print "var DOKU_TPL    = '" . DOKU_TPL . "';";
    print "var DOKU_UHN    = " . (int) useHeading('navigation') . ";";
    print "var DOKU_UHC    = " . (int) useHeading('content') . ";";
    // load JS specific translations
    $json = new JSON();
    $lang['js']['plugins'] = js_pluginstrings();
    echo 'LANG = ' . $json->encode($lang['js']) . ";\n";
    // load toolbar
    toolbar_JSdefines('toolbar');
    // load files
    foreach ($files as $file) {
        echo "\n\n/* XXXXXXXXXX begin of " . str_replace(DOKU_INC, '', $file) . " XXXXXXXXXX */\n\n";
        js_load($file);
        echo "\n\n/* XXXXXXXXXX end of " . str_replace(DOKU_INC, '', $file) . " XXXXXXXXXX */\n\n";
    }
    // init stuff
    js_runonstart("addEvent(document,'click',closePopups)");
    js_runonstart('addTocToggle()');
    js_runonstart("initSizeCtl('size__ctl','wiki__text')");
    js_runonstart("initToolbar('tool__bar','wiki__text',toolbar)");
    if ($conf['locktime'] != 0) {
        js_runonstart("locktimer.init(" . ($conf['locktime'] - 60) . ",'" . js_escape($lang['willexpire']) . "'," . $conf['usedraft'] . ")");
    }
    js_runonstart('scrollToMarker()');
    js_runonstart('focusMarker()');
    // init hotkeys - must have been done after init of toolbar
    # disabled for FS#1958    js_runonstart('initializeHotkeys()');
    // end output buffering and get contents
    $js = ob_get_contents();
    ob_end_clean();
    // compress whitespace and comments
    if ($conf['compress']) {
        $js = js_compress($js);
    }
    $js .= "\n";
    // https://bugzilla.mozilla.org/show_bug.cgi?id=316033
    // save cache file
    io_saveFile($cache, $js);
    if (function_exists('gzopen')) {
        io_saveFile("{$cache}.gz", $js);
    }
    // finally send output
    if ($conf['gzip_output']) {
        header('Vary: Accept-Encoding');
        header('Content-Encoding: gzip');
        print gzencode($js, 9, FORCE_GZIP);
    } else {
        print $js;
    }
}

/**
 * Delete a draft
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function ajax_draftdel()
{
    $id = cleanID($_REQUEST['id']);
    if (empty($id)) {
        return;
    }
    $client = $_SERVER['REMOTE_USER'];
    if (!$client) {
        $client = clientIP(true);
    }
    $cname = getCacheName($client . $id, '.draft');
    @unlink($cname);
}

/**
 * Wrapper for GeSHi Code Highlighter, provides caching of its output
 *
 * @author Christopher Smith <chris@jalakai.co.uk>
 */
function p_xhtml_cached_geshi($code, $language)
{
    $cache = getCacheName($language . $code, ".code");
    if (@file_exists($cache) && !$_REQUEST['purge'] && filemtime($cache) > filemtime(DOKU_INC . 'inc/geshi.php')) {
        $highlighted_code = io_readFile($cache, false);
        @touch($cache);
    } else {
        require_once DOKU_INC . 'inc/geshi.php';
        $geshi = new GeSHi($code, strtolower($language), DOKU_INC . 'inc/geshi');
        $geshi->set_encoding('utf-8');
        $geshi->enable_classes();
        $geshi->set_header_type(GESHI_HEADER_PRE);
        $geshi->set_overall_class("code {$language}");
        $geshi->set_link_target($conf['target']['extern']);
        $highlighted_code = $geshi->parse_code();
        io_saveFile($cache, $highlighted_code);
    }
    return $highlighted_code;
}

/**
 * Return info about the current document as associative
 * array.
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 */
function pageinfo()
{
    global $ID;
    global $REV;
    global $USERINFO;
    global $conf;
    // include ID & REV not redundant, as some parts of DokuWiki may temporarily change $ID, e.g. p_wiki_xhtml
    // FIXME ... perhaps it would be better to ensure the temporary changes weren't necessary
    $info['id'] = $ID;
    $info['rev'] = $REV;
    if ($_SERVER['REMOTE_USER']) {
        $info['userinfo'] = $USERINFO;
        $info['perm'] = auth_quickaclcheck($ID);
        $info['subscribed'] = is_subscribed($ID, $_SERVER['REMOTE_USER']);
        $info['client'] = $_SERVER['REMOTE_USER'];
        // if some outside auth were used only REMOTE_USER is set
        if (!$info['userinfo']['name']) {
            $info['userinfo']['name'] = $_SERVER['REMOTE_USER'];
        }
    } else {
        $info['perm'] = auth_aclcheck($ID, '', null);
        $info['subscribed'] = false;
        $info['client'] = clientIP(true);
    }
    $info['namespace'] = getNS($ID);
    $info['locked'] = checklock($ID);
    $info['filepath'] = realpath(wikiFN($ID));
    $info['exists'] = @file_exists($info['filepath']);
    if ($REV) {
        //check if current revision was meant
        if ($info['exists'] && @filemtime($info['filepath']) == $REV) {
            $REV = '';
        } else {
            //really use old revision
            $info['filepath'] = realpath(wikiFN($ID, $REV));
            $info['exists'] = @file_exists($info['filepath']);
        }
    }
    $info['rev'] = $REV;
    if ($info['exists']) {
        $info['writable'] = is_writable($info['filepath']) && $info['perm'] >= AUTH_EDIT;
    } else {
        $info['writable'] = $info['perm'] >= AUTH_CREATE;
    }
    $info['editable'] = $info['writable'] && empty($info['lock']);
    $info['lastmod'] = @filemtime($info['filepath']);
    //load page meta data
    $info['meta'] = p_get_metadata($ID);
    //who's the editor
    if ($REV) {
        $revinfo = getRevisionInfo($ID, $REV, 1024);
    } else {
        $revinfo = isset($info['meta']['last_change']) ? $info['meta']['last_change'] : getRevisionInfo($ID, $info['lastmod'], 1024);
    }
    $info['ip'] = $revinfo['ip'];
    $info['user'] = $revinfo['user'];
    $info['sum'] = $revinfo['sum'];
    // See also $INFO['meta']['last_change'] which is the most recent log line for page $ID.
    // Use $INFO['meta']['last_change']['type']==='e' in place of $info['minor'].
    if ($revinfo['user']) {
        $info['editor'] = $revinfo['user'];
    } else {
        $info['editor'] = $revinfo['ip'];
    }
    // draft
    $draft = getCacheName($info['client'] . $ID, '.draft');
    if (@file_exists($draft)) {
        if (@filemtime($draft) < @filemtime(wikiFN($ID))) {
            // remove stale draft
            @unlink($draft);
        } else {
            $info['draft'] = $draft;
        }
    }
    return $info;
}

/**
 * Return info about the current document as associative
 * array.
 *
 * @author Andreas Gohr <andi@splitbrain.org>
 *
 * @return array with info about current document
 */
function pageinfo()
{
    global $ID;
    global $REV;
    global $RANGE;
    global $lang;
    /* @var Input $INPUT */
    global $INPUT;
    $info = basicinfo($ID);
    // include ID & REV not redundant, as some parts of DokuWiki may temporarily change $ID, e.g. p_wiki_xhtml
    // FIXME ... perhaps it would be better to ensure the temporary changes weren't necessary
    $info['id'] = $ID;
    $info['rev'] = $REV;
    if ($INPUT->server->has('REMOTE_USER')) {
        $sub = new Subscription();
        $info['subscribed'] = $sub->user_subscription();
    } else {
        $info['subscribed'] = false;
    }
    $info['locked'] = checklock($ID);
    $info['filepath'] = fullpath(wikiFN($ID));
    $info['exists'] = file_exists($info['filepath']);
    $info['currentrev'] = @filemtime($info['filepath']);
    if ($REV) {
        //check if current revision was meant
        if ($info['exists'] && $info['currentrev'] == $REV) {
            $REV = '';
        } elseif ($RANGE) {
            //section editing does not work with old revisions!
            $REV = '';
            $RANGE = '';
            msg($lang['nosecedit'], 0);
        } else {
            //really use old revision
            $info['filepath'] = fullpath(wikiFN($ID, $REV));
            $info['exists'] = file_exists($info['filepath']);
        }
    }
    $info['rev'] = $REV;
    if ($info['exists']) {
        $info['writable'] = is_writable($info['filepath']) && $info['perm'] >= AUTH_EDIT;
    } else {
        $info['writable'] = $info['perm'] >= AUTH_CREATE;
    }
    $info['editable'] = $info['writable'] && empty($info['locked']);
    $info['lastmod'] = @filemtime($info['filepath']);
    //load page meta data
    $info['meta'] = p_get_metadata($ID);
    //who's the editor
    $pagelog = new PageChangeLog($ID, 1024);
    if ($REV) {
        $revinfo = $pagelog->getRevisionInfo($REV);
    } else {
        if (!empty($info['meta']['last_change']) && is_array($info['meta']['last_change'])) {
            $revinfo = $info['meta']['last_change'];
        } else {
            $revinfo = $pagelog->getRevisionInfo($info['lastmod']);
            // cache most recent changelog line in metadata if missing and still valid
            if ($revinfo !== false) {
                $info['meta']['last_change'] = $revinfo;
                p_set_metadata($ID, array('last_change' => $revinfo));
            }
        }
    }
    //and check for an external edit
    if ($revinfo !== false && $revinfo['date'] != $info['lastmod']) {
        // cached changelog line no longer valid
        $revinfo = false;
        $info['meta']['last_change'] = $revinfo;
        p_set_metadata($ID, array('last_change' => $revinfo));
    }
    $info['ip'] = $revinfo['ip'];
    $info['user'] = $revinfo['user'];
    $info['sum'] = $revinfo['sum'];
    // See also $INFO['meta']['last_change'] which is the most recent log line for page $ID.
    // Use $INFO['meta']['last_change']['type']===DOKU_CHANGE_TYPE_MINOR_EDIT in place of $info['minor'].
    if ($revinfo['user']) {
        $info['editor'] = $revinfo['user'];
    } else {
        $info['editor'] = $revinfo['ip'];
    }
    // draft
    $draft = getCacheName($info['client'] . $ID, '.draft');
    if (file_exists($draft)) {
        if (@filemtime($draft) < @filemtime(wikiFN($ID))) {
            // remove stale draft
            @unlink($draft);
        } else {
            $info['draft'] = $draft;
        }
    }
    return $info;
//.........这里部分代码省略.........

 /**
  * @param string $key primary identifier
  * @param string $ext file extension
  */
 public function __construct($key, $ext)
 {
     $this->key = $key;
     $this->ext = $ext;
     $this->cache = getCacheName($key, $ext);
 }

    function registerOnLoad($js)
    {
        global $ID;
        global $lang;
        $preview_button = $lang['btn_preview'];
        $fckg_conf_direction = $this->getConf('direction');
        if ($fckg_conf_direction == "dokuwiki") {
            $fckg_lang_direction = $lang['direction'];
        } else {
            $fckg_lang_direction = $fckg_conf_direction;
        }
        $media_tmp_ns = preg_match('/:/', $ID) ? preg_replace('/:\\w+$/', "", $ID, 1) : "";
        $locktimer_msg = "Your lock for editing this page is about to expire in a minute.\\n" . "You can reset the timer by clicking the Back-up button.";
        $meta_fn = metaFN($ID, '.fckg');
        $meta_id = 'meta/' . str_replace(':', '/', $ID) . '.fckg';
        global $INFO;
        global $conf;
        global $USERINFO;
        $_OS = strtolower(PHP_OS);
        $cname = getCacheName($INFO['client'] . $ID, '.draft');
        $open_upload = $this->getConf('open_upload');
        $editor_backup = $this->getConf('editor_bak');
        $create_folder = $this->getConf('create_folder');
        if (!isset($INFO['userinfo']) && !$open_upload) {
            $user_type = 'visitor';
        } else {
            $user_type = 'user';
        }
        // if no ACL is used always return upload rights
        if ($conf['useacl']) {
            $client = $_SERVER['REMOTE_USER'];
        } else {
            $client = "";
        }
        $fnencode = isset($conf['fnencode']) ? $conf['fnencode'] : 'url';
        $user_groups = $USERINFO['grps'];
        if (!$user_groups) {
            $user_groups = array();
        }
        if (@in_array("guest", $user_groups)) {
            $create_folder = 'n';
            $user_type = 'visitor';
        }
        $user_groups = implode(";;", $user_groups);
        if ($INFO['isadmin'] || $INFO['ismanager']) {
            $client = "";
        }
        $user_name = $USERINFO['name'];
        $user_email = $USERINFO['mail'];
        $ver_anteater = mktime(0, 0, 0, 11, 7, 2010);
        $dwiki_version = mktime(0, 0, 0, 01, 01, 2008);
        if (isset($conf['fnencode'])) {
            $ver_anteater = mktime(0, 0, 0, 11, 7, 2010);
            $dwiki_version = mktime(0, 0, 0, 11, 7, 2010);
        } else {
            if (function_exists('getVersionData')) {
                $verdata = getVersionData();
                if (isset($verdata) && preg_match('/(\\d+)-(\\d+)-(\\d+)/', $verdata['date'], $ver_date)) {
                    if ($ver_date[1] >= 2005 && ($ver_date[3] > 0 && $ver_date[3] < 31) && ($ver_date[2] > 0 && $ver_date[2] <= 12)) {
                        // month        day               year
                        $dwiki_version = @mktime(0, 0, 0, $ver_date[2], $ver_date[3], $ver_date[1]);
                        if (!$dwiki_version) {
                            $dwiki_version = mktime(0, 0, 0, 01, 01, 2008);
                        }
                        $ver_anteater = mktime(0, 0, 0, 11, 7, 2010);
                    }
                }
            }
        }
        $default_fb = $this->getConf('default_fb');
        if ($default_fb == 'none') {
            $client = "";
        }
        $doku_base = DOKU_BASE;
        return <<<end_of_string


<script type='text/javascript'>
 //<![CDATA[

if(window.dw_locktimer) {
   var locktimer = dw_locktimer;
} 
var FCKRecovery = "";
var oldonload = window.onload;
var ourLockTimerINI = false;
var oldBeforeunload;

  var fckg_onload = function() { {$js} };  
 
  jQuery(window).bind('load',{},fckg_onload);
  
   function fckgEditorTextChanged() {
   window.textChanged = false;   
   oldBeforeunload(); 
   if(window.dwfckTextChanged) {        
      return LANG.notsavedyet;
   }  
 }

//.........这里部分代码省略.........

 function get_resized_image($width, $height, $override_sizetype = '', $filetype = '')
 {
     global $ihConf;
     $sizetype = $override_sizetype == '' ? $this->sizetype : $override_sizetype;
     switch ($sizetype) {
         case 'large':
             $file_extension = $ihConf['large']['filetype'] == 'no_change' ? $this->extension : '.' . $ihConf['large']['filetype'];
             $background = $ihConf['large']['bg'];
             $quality = $ihConf['large']['quality'];
             $width = $ihConf['large']['width'];
             $height = $ihConf['large']['height'];
             break;
         case 'medium':
             $file_extension = $ihConf['medium']['filetype'] == 'no_change' ? $this->extension : '.' . $ihConf['medium']['filetype'];
             $background = $ihConf['medium']['bg'];
             $quality = $ihConf['medium']['quality'];
             break;
         case 'small':
             $file_extension = $ihConf['small']['filetype'] == 'no_change' ? $this->extension : '.' . $ihConf['small']['filetype'];
             $background = $ihConf['small']['bg'];
             $quality = $ihConf['small']['quality'];
             break;
         default:
             $file_extension = $this->extension;
             $background = $ihConf['default']['bg'];
             $quality = $ihConf['default']['quality'];
             break;
     }
     list($newwidth, $newheight, $resize) = $this->calculate_size($width, $height);
     // set canvas dimensions
     if ($newwidth > 0 && $newheight > 0) {
         $this->canvas['width'] = $newwidth;
         $this->canvas['height'] = $newheight;
     }
     $this->initialize_overlays($sizetype);
     // override filetype?
     $file_extension = $filetype == '' ? $file_extension : $filetype;
     // Do we need to resize, watermark, zoom or convert to another filetype?
     if ($resize || $this->watermark['file'] != '' || $this->zoom['file'] != '' || $file_extension != $this->extension) {
         $local = getCacheName($this->src . $this->watermark['file'] . $this->zoom['file'] . $quality . $background . $ihConf['watermark']['gravity'] . $ihConf['zoom']['gravity'], '.image.' . $newwidth . 'x' . $newheight . $file_extension);
         //echo $local . '<br />';
         $mtime = @filemtime($local);
         // 0 if not exists
         if ($mtime > @filemtime($this->filename) && $mtime > @filemtime($this->watermark['file']) && $mtime > @filemtime($this->zoom['file']) || $this->resize_imageIM($file_extension, $local, $background, $quality) || $this->resize_imageGD($file_extension, $local, $background, $quality)) {
             return str_replace($ihConf['dir']['docroot'], '', $local);
         }
         //still here? resizing failed
     }
     return $this->src;
 }

 /**
  * Returns the local binary to use
  *
  * Downloads it if necessary
  *
  * @return bool|string
  */
 protected function getLocalBinary()
 {
     global $conf;
     $bin = $this->getBinaryName();
     if (!$bin) {
         return false;
     }
     // check distributed files first
     if (file_exists(__DIR__ . '/ditaa/' . $bin)) {
         return __DIR__ . '/ditaa/' . $bin;
     }
     $info = $this->getInfo();
     $cache = getCacheName($info['date'], ".{$bin}");
     if (file_exists($cache)) {
         return $cache;
     }
     $url = 'https://github.com/akavel/ditaa/releases/download/g1.0.0/' . $bin;
     if (io_download($url, $cache, false, '', 0)) {
         @chmod($cache, $conf['dmode']);
         return $cache;
     }
     return false;
 }