/lib/exe/css.php
PHP | 333 lines | 198 code | 45 blank | 90 comment | 45 complexity | 2831f1a74c2054c5a8855c348c21507a MD5 | raw file
- <?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');
- // 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;
- global $config_cascade;
- $style = '';
- if (isset($_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_BASE.'lib/styles/';
- // load plugin, template, user styles
- $files = array_merge($files, css_pluginstyles($style));
- if (isset($tplstyles[$style])) $files = array_merge($files, $tplstyles[$style]);
- if(isset($config_cascade['userstyle'][$style])){
- $files[$config_cascade['userstyle'][$style]] = DOKU_BASE;
- }
- }else{
- $files[DOKU_INC.'lib/styles/style.css'] = DOKU_BASE.'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, $tplstyles['rtl']);
- }
- if(isset($config_cascade['userstyle']['default'])){
- $files[$config_cascade['userstyle']['default']] = 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_BASE.'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_BASE.'lib/images/interwiki/'.$iw.'.png)';
- echo '}';
- }elseif(@file_exists(DOKU_INC.'lib/images/interwiki/'.$iw.'.gif')){
- echo "a.iw_$class {";
- echo ' background-image: url('.DOKU_BASE.'lib/images/interwiki/'.$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_BASE.'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_$class {";
- echo ' background-image: url('.DOKU_BASE.'lib/images/fileicons/'.$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 :