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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',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 :
?>
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