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+<?php
+/**
+ * DokuWiki StyleSheet creator
+ *
+ * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+
+if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../');
+if(!defined('NOSESSION')) define('NOSESSION',true); // we do not use a session or authentication here (better caching)
+if(!defined('DOKU_DISABLE_GZIP_OUTPUT')) define('DOKU_DISABLE_GZIP_OUTPUT',1); // we gzip ourself here
+require_once(DOKU_INC.'inc/init.php');
+require_once(DOKU_INC.'inc/pageutils.php');
+require_once(DOKU_INC.'inc/httputils.php');
+require_once(DOKU_INC.'inc/io.php');
+require_once(DOKU_INC.'inc/confutils.php');
+
+// Main (don't run when UNIT test)
+if(!defined('SIMPLE_TEST')){
+ header('Content-Type: text/css; charset=utf-8');
+ css_out();
+}
+
+
+// ---------------------- functions ------------------------------
+
+/**
+ * Output all needed Styles
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_out(){
+ global $conf;
+ global $lang;
+ $style = '';
+ if (isset($_REQUEST['s']) &&
+ in_array($_REQUEST['s'], array('all', 'print', 'feed'))) {
+ $style = $_REQUEST['s'];
+ }
+
+ $tpl = trim(preg_replace('/[^\w-]+/','',$_REQUEST['t']));
+ if($tpl){
+ $tplinc = DOKU_INC.'lib/tpl/'.$tpl.'/';
+ $tpldir = DOKU_BASE.'lib/tpl/'.$tpl.'/';
+ }else{
+ $tplinc = DOKU_TPLINC;
+ $tpldir = DOKU_TPL;
+ }
+
+ // The generated script depends on some dynamic options
+ $cache = getCacheName('styles'.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'].DOKU_BASE.$tplinc.$style,'.css');
+
+ // load template styles
+ $tplstyles = array();
+ if(@file_exists($tplinc.'style.ini')){
+ $ini = parse_ini_file($tplinc.'style.ini',true);
+ foreach($ini['stylesheets'] as $file => $mode){
+ $tplstyles[$mode][$tplinc.$file] = $tpldir;
+ }
+ }
+
+ // Array of needed files and their web locations, the latter ones
+ // are needed to fix relative paths in the stylesheets
+ $files = array();
+ //if (isset($tplstyles['all'])) $files = array_merge($files, $tplstyles['all']);
+ if(!empty($style)){
+ $files[DOKU_INC.'lib/styles/'.$style.'.css'] = DOKU_MEDIA.'lib/styles/';
+ // load plugin, template, user styles
+ $files = array_merge($files, css_pluginstyles($style));
+ if (isset($tplstyles[$style])) $files = array_merge($files, $tplstyles[$style]);
+ $files[DOKU_CONF.'user'.$style.'.css'] = DOKU_MEDIA;
+ }else{
+ $files[DOKU_INC.'lib/styles/style.css'] = DOKU_MEDIA.'lib/styles/';
+ // load plugin, template, user styles
+ $files = array_merge($files, css_pluginstyles('screen'));
+ if (isset($tplstyles['screen'])) $files = array_merge($files, $tplstyles['screen']);
+ if($lang['direction'] == 'rtl'){
+ if (isset($tplstyles['rtl'])) $files = array_merge($files, $tplstyles['rtl']);
+ }
+ $files[DOKU_CONF.'userstyle.css'] = DOKU_BASE;
+ }
+
+ // check cache age & handle conditional request
+ header('Cache-Control: public, max-age=3600');
+ header('Pragma: public');
+ if(css_cacheok($cache,array_keys($files),$tplinc)){
+ 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 stylesheet
+ ob_start();
+
+ // print the default classes for interwiki links and file downloads
+ css_interwiki();
+ css_filetypes();
+
+ // load files
+ foreach($files as $file => $location){
+ print css_loadfile($file, $location);
+ }
+
+ // end output buffering and get contents
+ $css = ob_get_contents();
+ ob_end_clean();
+
+ // apply style replacements
+ $css = css_applystyle($css,$tplinc);
+
+ // compress whitespace and comments
+ if($conf['compress']){
+ $css = css_compress($css);
+ }
+
+ // save cache file
+ io_saveFile($cache,$css);
+ if(function_exists('gzopen')) io_saveFile("$cache.gz",$css);
+
+ // finally send output
+ if ($conf['gzip_output']) {
+ header('Vary: Accept-Encoding');
+ header('Content-Encoding: gzip');
+ print gzencode($css,9,FORCE_GZIP);
+ } else {
+ print $css;
+ }
+}
+
+/**
+ * Checks if a CSS Cache file still is valid
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_cacheok($cache,$files,$tplinc){
+ global $config_cascade;
+
+ if(isset($_REQUEST['purge'])) return false; //support purge request
+
+ $ctime = @filemtime($cache);
+ if(!$ctime) return false; //There is no cache
+
+ // some additional files to check
+ $files = array_merge($files, getConfigFiles('main'));
+ $files[] = $tplinc.'style.ini';
+ $files[] = __FILE__;
+
+ // now walk the files
+ foreach($files as $file){
+ if(@filemtime($file) > $ctime){
+ return false;
+ }
+ }
+ return true;
+}
+
+/**
+ * Does placeholder replacements in the style according to
+ * the ones defined in a templates style.ini file
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_applystyle($css,$tplinc){
+ if(@file_exists($tplinc.'style.ini')){
+ $ini = parse_ini_file($tplinc.'style.ini',true);
+ $css = strtr($css,$ini['replacements']);
+ }
+ return $css;
+}
+
+/**
+ * Prints classes for interwikilinks
+ *
+ * Interwiki links have two classes: 'interwiki' and 'iw_$name>' where
+ * $name is the identifier given in the config. All Interwiki links get
+ * an default style with a default icon. If a special icon is available
+ * for an interwiki URL it is set in it's own class. Both classes can be
+ * overwritten in the template or userstyles.
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_interwiki(){
+
+ // default style
+ echo 'a.interwiki {';
+ echo ' background: transparent url('.DOKU_MEDIA.'lib/images/interwiki.png) 0px 1px no-repeat;';
+ echo ' padding-left: 16px;';
+ echo '}';
+
+ // additional styles when icon available
+ $iwlinks = getInterwiki();
+ foreach(array_keys($iwlinks) as $iw){
+ $class = preg_replace('/[^_\-a-z0-9]+/i','_',$iw);
+ if(@file_exists(DOKU_INC.'lib/images/interwiki/'.$iw.'.png')){
+ echo "a.iw_$class {";
+ echo ' background-image: url('.DOKU_MEDIA.'lib/images/interwiki/'.$iw.'.png)';
+ echo '}';
+ }elseif(@file_exists(DOKU_INC.'lib/images/interwiki/'.$iw.'.gif')){
+ echo "a.iw_$class {";
+ echo ' background-image: url('.DOKU_MEDIA.'lib/images/interwiki/'.$iw.'.gif)';
+ echo '}';
+ }
+ }
+}
+
+/**
+ * Prints classes for file download links
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_filetypes(){
+
+ // default style
+ echo 'a.mediafile {';
+ echo ' background: transparent url('.DOKU_MEDIA.'lib/images/fileicons/file.png) 0px 1px no-repeat;';
+ echo ' padding-left: 18px;';
+ echo ' padding-bottom: 1px;';
+ echo '}';
+
+ // additional styles when icon available
+ // scan directory for all icons
+ $exts = array();
+ if($dh = opendir(DOKU_INC.'lib/images/fileicons')){
+ while(false !== ($file = readdir($dh))){
+ if(preg_match('/([_\-a-z0-9]+(?:\.[_\-a-z0-9]+)*?)\.(png|gif)/i',$file,$match)){
+ $ext = strtolower($match[1]);
+ $type = '.'.strtolower($match[2]);
+ if($ext!='file' && (!isset($exts[$ext]) || $type=='.png')){
+ $exts[$ext] = $type;
+ }
+ }
+ }
+ closedir($dh);
+ }
+ foreach($exts as $ext=>$type){
+ $class = preg_replace('/[^_\-a-z0-9]+/','_',$ext);
+ echo "a.mf_$class {";
+ echo ' background-image: url('.DOKU_MEDIA.'lib/images/fileicons/'.$ext.$type.')';
+ echo '}';
+ }
+}
+
+/**
+ * Loads a given file and fixes relative URLs with the
+ * given location prefix
+ */
+function css_loadfile($file,$location=''){
+ if(!@file_exists($file)) return '';
+ $css = io_readFile($file);
+ if(!$location) return $css;
+
+ $css = preg_replace('#(url\([ \'"]*)((?!/|http://|https://| |\'|"))#','\\1'.$location.'\\3',$css);
+ return $css;
+}
+
+
+/**
+ * Returns a list of possible Plugin Styles (no existance check here)
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_pluginstyles($mode='screen'){
+ global $lang;
+ $list = array();
+ $plugins = plugin_list();
+ foreach ($plugins as $p){
+ if($mode == 'all'){
+ $list[DOKU_PLUGIN."$p/all.css"] = DOKU_BASE."lib/plugins/$p/";
+ }elseif($mode == 'print'){
+ $list[DOKU_PLUGIN."$p/print.css"] = DOKU_BASE."lib/plugins/$p/";
+ }elseif($mode == 'feed'){
+ $list[DOKU_PLUGIN."$p/feed.css"] = DOKU_BASE."lib/plugins/$p/";
+ }else{
+ $list[DOKU_PLUGIN."$p/style.css"] = DOKU_BASE."lib/plugins/$p/";
+ $list[DOKU_PLUGIN."$p/screen.css"] = DOKU_BASE."lib/plugins/$p/";
+ }
+ if($lang['direction'] == 'rtl'){
+ $list[DOKU_PLUGIN."$p/rtl.css"] = DOKU_BASE."lib/plugins/$p/";
+ }
+ }
+ return $list;
+}
+
+/**
+ * Very simple CSS optimizer
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_compress($css){
+ //strip comments through a callback
+ $css = preg_replace_callback('#(/\*)(.*?)(\*/)#s','css_comment_cb',$css);
+
+ //strip (incorrect but common) one line comments
+ $css = preg_replace('/(?<!:)\/\/.*$/m','',$css);
+
+ // strip whitespaces
+ $css = preg_replace('![\r\n\t ]+!',' ',$css);
+ $css = preg_replace('/ ?([:;,{}\/]) ?/','\\1',$css);
+
+ // shorten colors
+ $css = preg_replace("/#([0-9a-fA-F]{1})\\1([0-9a-fA-F]{1})\\2([0-9a-fA-F]{1})\\3/", "#\\1\\2\\3",$css);
+
+ return $css;
+}
+
+/**
+ * Callback for css_compress()
+ *
+ * Keeps short comments (< 5 chars) to maintain typical browser hacks
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+function css_comment_cb($matches){
+ if(strlen($matches[2]) > 4) return '';
+ return $matches[0];
+}
+
+//Setup VIM: ex: et ts=4 enc=utf-8 :