diff options
Diffstat (limited to 'mod/dokuwiki/vendors/dokuwiki/lib/exe/css.php')
| -rw-r--r-- | mod/dokuwiki/vendors/dokuwiki/lib/exe/css.php | 330 |
1 files changed, 330 insertions, 0 deletions
diff --git a/mod/dokuwiki/vendors/dokuwiki/lib/exe/css.php b/mod/dokuwiki/vendors/dokuwiki/lib/exe/css.php new file mode 100644 index 000000000..2cb383de0 --- /dev/null +++ b/mod/dokuwiki/vendors/dokuwiki/lib/exe/css.php @@ -0,0 +1,330 @@ +<?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 : |