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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)
require_once(DOKU_INC.'inc/init.php');
require_once(DOKU_INC.'inc/pageutils.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 $lang;
switch ($_REQUEST['s']) {
case 'all':
case 'print':
case 'feed':
$style = $_REQUEST['s'];
break;
default:
$style = '';
break;
}
$tpl = trim(preg_replace('/[^\w-]+/','',$_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
$cache = getCacheName('styles'.DOKU_BASE.$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]);
$files[DOKU_CONF.'user'.$style.'.css'] = '';
}else{
$files[DOKU_INC.'lib/styles/style.css'] = DOKU_BASE.'lib/styles/';
if($conf['spellchecker']){
$files[DOKU_INC.'lib/styles/spellcheck.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']);
}
$files[DOKU_CONF.'userstyle.css'] = '';
}
// check cache age & handle conditional request
header('Cache-Control: public, max-age=3600');
header('Pragma: public');
if(css_cacheok($cache,array_keys($files),$tplinc)){
http_conditionalRequest(filemtime($cache));
if($conf['allowdebug']) header("X-CacheUsed: $cache");
readfile($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);
// finally send output
print $css;
}
/**
* Checks if a CSS Cache file still is valid
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function css_cacheok($cache,$files,$tplinc){
if($_REQUEST['purge']) return false; //support purge request
$ctime = @filemtime($cache);
if(!$ctime) return false; //There is no cache
// some additional files to check
$files[] = DOKU_CONF.'dokuwiki.php';
$files[] = DOKU_CONF.'local.php';
$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
$mimes = getMimeTypes();
foreach(array_keys($mimes) as $mime){
$class = preg_replace('/[^_\-a-z0-9]+/i','_',$mime);
if(@file_exists(DOKU_INC.'lib/images/fileicons/'.$mime.'.png')){
echo "a.mf_$class {";
echo ' background-image: url('.DOKU_BASE.'lib/images/fileicons/'.$mime.'.png)';
echo '}';
}elseif(@file_exists(DOKU_INC.'lib/images/fileicons/'.$mime.'.gif')){
echo "a.mf_$class {";
echo ' background-image: url('.DOKU_BASE.'lib/images/fileicons/'.$mime.'.gif)';
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 :
?>
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