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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)
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;
$mediatype = 'screen';
if (isset($_REQUEST['s']) &&
in_array($_REQUEST['s'], array('all', 'print', 'feed'))) {
$mediatype = $_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 = tpl_incdir();
$tpldir = tpl_basedir();
}
// The generated script depends on some dynamic options
$cache = new cache('styles'.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'].DOKU_BASE.$tplinc.$mediatype,'.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();
// load core styles
$files[DOKU_INC.'lib/styles/'.$mediatype.'.css'] = DOKU_BASE.'lib/styles/';
// load jQuery-UI theme
$files[DOKU_INC.'lib/scripts/jquery/jquery-ui-theme/smoothness.css'] = DOKU_BASE.'lib/scripts/jquery/jquery-ui-theme/';
// load plugin styles
$files = array_merge($files, css_pluginstyles($mediatype));
// load template styles
if (isset($tplstyles[$mediatype])) {
$files = array_merge($files, $tplstyles[$mediatype]);
}
// if old 'default' userstyle setting exists, make it 'screen' userstyle for backwards compatibility
if (isset($config_cascade['userstyle']['default'])) {
$config_cascade['userstyle']['screen'] = $config_cascade['userstyle']['default'];
}
// load user styles
if(isset($config_cascade['userstyle'][$mediatype])){
$files[$config_cascade['userstyle'][$mediatype]] = DOKU_BASE;
}
// load rtl styles
// @todo: this currently adds the rtl styles only to the 'screen' media type
// but 'print' and 'all' should also be supported
if ($mediatype=='screen') {
if($lang['direction'] == 'rtl'){
if (isset($tplstyles['rtl'])) $files = array_merge($files, $tplstyles['rtl']);
}
}
$cache_files = array_merge(array_keys($files), getConfigFiles('main'));
$cache_files[] = $tplinc.'style.ini';
$cache_files[] = __FILE__;
// check cache age & handle conditional request
// This may exit if a cache can be used
http_cached($cache->cache,
$cache->useCache(array('files' => $cache_files)));
// start output buffering and build the stylesheet
ob_start();
// print the default classes for interwiki links and file downloads
css_interwiki();
css_filetypes();
// load files
foreach($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);
// place all @import statements at the top of the file
$css = css_moveimports($css);
// compress whitespace and comments
if($conf['compress']){
$css = css_compress($css);
}
// embed small images right into the stylesheet
if($conf['cssdatauri']){
$base = preg_quote(DOKU_BASE,'#');
$css = preg_replace_callback('#(url\([ \'"]*)('.$base.')(.*?(?:\.(png|gif)))#i','css_datauri',$css);
}
http_cached_finish($cache->cache, $css);
}
/**
* Does placeholder replacements in the style according to
* the ones defined in a templates style.ini file
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function css_applystyle($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: 1px 0px 1px 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 '.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 ".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\([ \'"]*)(?!/|data:|http://|https://| |\'|")#','\\1'.$location,$css);
$css = preg_replace('#(@import\s+[\'"])(?!/|data:|http://|https://)#', '\\1'.$location, $css);
return $css;
}
/**
* Converte local image URLs to data URLs if the filesize is small
*
* Callback for preg_replace_callback
*/
function css_datauri($match){
global $conf;
$pre = unslash($match[1]);
$base = unslash($match[2]);
$url = unslash($match[3]);
$ext = unslash($match[4]);
$local = DOKU_INC.$url;
$size = @filesize($local);
if($size && $size < $conf['cssdatauri']){
$data = base64_encode(file_get_contents($local));
}
if($data){
$url = 'data:image/'.$ext.';base64,'.$data;
}else{
$url = $base.$url;
}
return $pre.$url;
}
/**
* Returns a list of possible Plugin Styles (no existance check here)
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function css_pluginstyles($mediatype='screen'){
global $lang;
$list = array();
$plugins = plugin_list();
foreach ($plugins as $p){
$list[DOKU_PLUGIN."$p/$mediatype.css"] = DOKU_BASE."lib/plugins/$p/";
// alternative for screen.css
if ($mediatype=='screen') {
$list[DOKU_PLUGIN."$p/style.css"] = DOKU_BASE."lib/plugins/$p/";
}
if($lang['direction'] == 'rtl'){
$list[DOKU_PLUGIN."$p/rtl.css"] = DOKU_BASE."lib/plugins/$p/";
}
}
return $list;
}
/**
* Move all @import statements in a combined stylesheet to the top so they
* aren't ignored by the browser.
*
* @author Gabriel Birke <birke@d-scribe.de>
*/
function css_moveimports($css)
{
if(!preg_match_all('/@import\s+(?:url\([^)]+\)|"[^"]+")\s*[^;]*;\s*/', $css, $matches, PREG_OFFSET_CAPTURE)) {
return $css;
}
$newCss = "";
$imports = "";
$offset = 0;
foreach($matches[0] as $match) {
$newCss .= substr($css, $offset, $match[1] - $offset);
$imports .= $match[0];
$offset = $match[1] + strlen($match[0]);
}
$newCss .= substr($css, $offset);
return $imports.$newCss;
}
/**
* 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);
$css = preg_replace('/ ?: /',':',$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 :
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