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Diffstat (limited to 'lib/exe/css.php')
| -rw-r--r-- | lib/exe/css.php | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/lib/exe/css.php b/lib/exe/css.php new file mode 100644 index 000000000..7b6523b41 --- /dev/null +++ b/lib/exe/css.php @@ -0,0 +1,165 @@ +<?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',realpath(dirname(__FILE__).'/../../').'/'); +define('NOSESSION',true); // we do not use a session or authentication here (better caching) +require_once(DOKU_INC.'inc/init.php'); +require_once(DOKU_INC.'inc/pageutils.php'); +require_once(DOKU_INC.'inc/io.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; + $print = (bool) $_REQUEST['print']; //print mode? + + // The generated script depends on some dynamic options + $cache = getCacheName('styles'.$print,'.css'); + + // Array of needed files and their web locations, the latter ones + // are needed to fix relative paths in the stylesheets + $files = array(); + if($print){ + $files[DOKU_TPLINC.'print.css'] = DOKU_TPL; + // load plugin styles + $files = array_merge($files, css_pluginstyles('print')); + $files[DOKU_CONF.'userprint.css'] = ''; + }else{ + $files[DOKU_INC.'lib/styles/style.css'] = DOKU_BASE.'lib/styles/'; + //fixme spellchecker style + $files[DOKU_TPLINC.'layout.css'] = DOKU_TPL; + $files[DOKU_TPLINC.'design.css'] = DOKU_TPL; + if($lang['direction'] == 'rtl'){ + $files[DOKU_TPLINC.'rtl.css'] = DOKU_TPL; + } + // load plugin styles + $files = array_merge($files, css_pluginstyles('screen')); + $files[DOKU_CONF.'userstyle.css'] = ''; + } + + // check cache age + if(css_cacheok($cache,array_keys($files))){ + readfile($cache); + return; + } + + // start output buffering and build the stylesheet + ob_start(); + + // load files + foreach($files as $file => $location){ + print css_loadfile($file, $location); + } + + // end output buffering and get contents + $css = ob_get_contents(); + ob_end_clean(); + + // compress whitespace and comments + if($conf['compress']){ + $css = css_compress($css); + } + + // save cache file + io_saveFile($cache,$css); + + // finally send output + print $css; +} + +/** + * Checks if a CSS Cache file still is valid + * + * @author Andreas Gohr <andi@splitbrain.org> + */ +function css_cacheok($cache,$files){ + $ctime = @filemtime($cache); + if(!$ctime) return false; //There is no cache + + // some additional files to check + $files[] = DOKU_CONF.'dokuwiki.conf'; + $files[] = DOKU_CONF.'local.conf'; + $files[] = __FILE__; + + // now walk the files + foreach($files as $file){ + if(@filemtime($file) > $ctime){ + return false; + } + } + return true; +} + +/** + * Loads a given file and fixes relative URLs with the + * given location prefix + */ +function css_loadfile($file,$location=''){ + if(!@file_exists($file)) return ''; + $css = io_readFile($file); + if(!$location) return $css; + + $css = preg_replace('!(url\( *)([^/])!','\\1'.$location.'\\2',$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'){ + $list = array(); + $plugins = plugin_list(); + foreach ($plugins as $p){ + if($mode == 'print'){ + $list[DOKU_PLUGIN."$p/print.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/"; + } + } + return $list; +} + +/** + * Very simple CSS optimizer + * + * @author Andreas Gohr <andi@splitbrain.org> + */ +function css_compress($css){ + // strip whitespaces + $css = preg_replace('![\r\n\t ]+!',' ',$css); + $css = preg_replace('/ ?([:;,{}]) ?/','\\1',$css); + + // strip comments (ungreedy) + // We keep very small comments to maintain typical browser hacks + $css = preg_replace('!(/\*)(.{4,})(\*/)!U','',$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; +} + + +//Setup VIM: ex: et ts=4 enc=utf-8 : +?> |