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+<?php
+/**
+ * DokuWiki StyleSheet creator
+ *
+ * @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
+ * @author Andreas Gohr <andi@splitbrain.org>
+ */
+
+use dokuwiki\Cache\Cache;
+use dokuwiki\Extension\Event;
+
+if(!defined('DOKU_INC')) define('DOKU_INC', __DIR__ .'/../../');
+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
+if(!defined('NL')) define('NL',"\n");
+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;
+ global $INPUT;
+
+ if ($INPUT->str('s') == 'feed') {
+ $mediatypes = array('feed');
+ $type = 'feed';
+ } else {
+ $mediatypes = array('screen', 'all', 'print', 'speech');
+ $type = '';
+ }
+
+ // decide from where to get the template
+ $tpl = trim(preg_replace('/[^\w-]+/','',$INPUT->str('t')));
+ if(!$tpl) $tpl = $conf['template'];
+
+ // load style.ini
+ $styleUtil = new \dokuwiki\StyleUtils($tpl, $INPUT->bool('preview'));
+ $styleini = $styleUtil->cssStyleini();
+
+ // cache influencers
+ $tplinc = tpl_incdir($tpl);
+ $cache_files = getConfigFiles('main');
+ $cache_files[] = $tplinc.'style.ini';
+ $cache_files[] = DOKU_CONF."tpl/$tpl/style.ini";
+ $cache_files[] = __FILE__;
+ if($INPUT->bool('preview')) $cache_files[] = $conf['cachedir'].'/preview.ini';
+
+ // Array of needed files and their web locations, the latter ones
+ // are needed to fix relative paths in the stylesheets
+ $media_files = array();
+ foreach($mediatypes as $mediatype) {
+ $files = array();
+
+ // load core styles
+ $files[DOKU_INC.'lib/styles/'.$mediatype.'.css'] = DOKU_BASE.'lib/styles/';
+
+ // load jQuery-UI theme
+ if ($mediatype == 'screen') {
+ $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($mediatype));
+ // load template styles
+ if (isset($styleini['stylesheets'][$mediatype])) {
+ $files = array_merge($files, $styleini['stylesheets'][$mediatype]);
+ }
+ // load user styles
+ if(is_array($config_cascade['userstyle'][$mediatype])) {
+ foreach($config_cascade['userstyle'][$mediatype] as $userstyle) {
+ $files[$userstyle] = DOKU_BASE;
+ }
+ }
+
+ // Let plugins decide to either put more styles here or to remove some
+ $media_files[$mediatype] = css_filewrapper($mediatype, $files);
+ $CSSEvt = new Event('CSS_STYLES_INCLUDED', $media_files[$mediatype]);
+
+ // Make it preventable.
+ if ( $CSSEvt->advise_before() ) {
+ $cache_files = array_merge($cache_files, array_keys($media_files[$mediatype]['files']));
+ } else {
+ // unset if prevented. Nothing will be printed for this mediatype.
+ unset($media_files[$mediatype]);
+ }
+
+ // finish event.
+ $CSSEvt->advise_after();
+ }
+
+ // The generated script depends on some dynamic options
+ $cache = new Cache(
+ 'styles' .
+ $_SERVER['HTTP_HOST'] .
+ $_SERVER['SERVER_PORT'] .
+ $INPUT->bool('preview') .
+ DOKU_BASE .
+ $tpl .
+ $type,
+ '.css'
+ );
+ $cache->setEvent('CSS_CACHE_USE');
+
+ // check cache age & handle conditional request
+ // This may exit if a cache can be used
+ $cache_ok = $cache->useCache(array('files' => $cache_files));
+ http_cached($cache->cache, $cache_ok);
+
+ // start output buffering
+ ob_start();
+
+ // Fire CSS_STYLES_INCLUDED for one last time to let the
+ // plugins decide whether to include the DW default styles.
+ // This can be done by preventing the Default.
+ $media_files['DW_DEFAULT'] = css_filewrapper('DW_DEFAULT');
+ Event::createAndTrigger('CSS_STYLES_INCLUDED', $media_files['DW_DEFAULT'], 'css_defaultstyles');
+
+ // build the stylesheet
+ foreach ($mediatypes as $mediatype) {
+
+ // Check if there is a wrapper set for this type.
+ if ( !isset($media_files[$mediatype]) ) {
+ continue;
+ }
+
+ $cssData = $media_files[$mediatype];
+
+ // Print the styles.
+ print NL;
+ if ( $cssData['encapsulate'] === true ) print $cssData['encapsulationPrefix'] . ' {';
+ print '/* START '.$cssData['mediatype'].' styles */'.NL;
+
+ // load files
+ foreach($cssData['files'] as $file => $location){
+ $display = str_replace(fullpath(DOKU_INC), '', fullpath($file));
+ print "\n/* XXXXXXXXX $display XXXXXXXXX */\n";
+ print css_loadfile($file, $location);
+ }
+
+ print NL;
+ if ( $cssData['encapsulate'] === true ) print '} /* /@media ';
+ else print '/*';
+ print ' END '.$cssData['mediatype'].' styles */'.NL;
+ }
+
+ // end output buffering and get contents
+ $css = ob_get_contents();
+ ob_end_clean();
+
+ // strip any source maps
+ stripsourcemaps($css);
+
+ // apply style replacements
+ $css = css_applystyle($css, $styleini['replacements']);
+
+ // parse less
+ $css = css_parseless($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);
+}
+
+/**
+ * Uses phpless to parse LESS in our CSS
+ *
+ * most of this function is error handling to show a nice useful error when
+ * LESS compilation fails
+ *
+ * @param string $css
+ * @return string
+ */
+function css_parseless($css) {
+ global $conf;
+
+ $less = new lessc();
+ $less->importDir = array(DOKU_INC);
+ $less->setPreserveComments(!$conf['compress']);
+
+ if (defined('DOKU_UNITTEST')){
+ $less->importDir[] = TMP_DIR;
+ }
+
+ try {
+ return $less->compile($css);
+ } catch(Exception $e) {
+ // get exception message
+ $msg = str_replace(array("\n", "\r", "'"), array(), $e->getMessage());
+
+ // try to use line number to find affected file
+ if(preg_match('/line: (\d+)$/', $msg, $m)){
+ $msg = substr($msg, 0, -1* strlen($m[0])); //remove useless linenumber
+ $lno = $m[1];
+
+ // walk upwards to last include
+ $lines = explode("\n", $css);
+ for($i=$lno-1; $i>=0; $i--){
+ if(preg_match('/\/(\* XXXXXXXXX )(.*?)( XXXXXXXXX \*)\//', $lines[$i], $m)){
+ // we found it, add info to message
+ $msg .= ' in '.$m[2].' at line '.($lno-$i);
+ break;
+ }
+ }
+ }
+
+ // something went wrong
+ $error = 'A fatal error occured during compilation of the CSS files. '.
+ 'If you recently installed a new plugin or template it '.
+ 'might be broken and you should try disabling it again. ['.$msg.']';
+
+ echo ".dokuwiki:before {
+ content: '$error';
+ background-color: red;
+ display: block;
+ background-color: #fcc;
+ border-color: #ebb;
+ color: #000;
+ padding: 0.5em;
+ }";
+
+ exit;
+ }
+}
+
+/**
+ * Does placeholder replacements in the style according to
+ * the ones defined in a templates style.ini file
+ *
+ * This also adds the ini defined placeholders as less variables
+ * (sans the surrounding __ and with a ini_ prefix)
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ *
+ * @param string $css
+ * @param array $replacements array(placeholder => value)
+ * @return string
+ */
+function css_applystyle($css, $replacements) {
+ // we convert ini replacements to LESS variable names
+ // and build a list of variable: value; pairs
+ $less = '';
+ foreach((array) $replacements as $key => $value) {
+ $lkey = trim($key, '_');
+ $lkey = '@ini_'.$lkey;
+ $less .= "$lkey: $value;\n";
+
+ $replacements[$key] = $lkey;
+ }
+
+ // we now replace all old ini replacements with LESS variables
+ $css = strtr($css, $replacements);
+
+ // now prepend the list of LESS variables as the very first thing
+ $css = $less.$css;
+ return $css;
+}
+
+/**
+ * Wrapper for the files, content and mediatype for the event CSS_STYLES_INCLUDED
+ *
+ * @author Gerry Weißbach <gerry.w@gammaproduction.de>
+ *
+ * @param string $mediatype type ofthe current media files/content set
+ * @param array $files set of files that define the current mediatype
+ * @return array
+ */
+function css_filewrapper($mediatype, $files=array()){
+ return array(
+ 'files' => $files,
+ 'mediatype' => $mediatype,
+ 'encapsulate' => $mediatype != 'all',
+ 'encapsulationPrefix' => '@media '.$mediatype
+ );
+}
+
+/**
+ * Prints the @media encapsulated default styles of DokuWiki
+ *
+ * @author Gerry Weißbach <gerry.w@gammaproduction.de>
+ *
+ * This function is being called by a CSS_STYLES_INCLUDED event
+ * The event can be distinguished by the mediatype which is:
+ * DW_DEFAULT
+ */
+function css_defaultstyles(){
+ // print the default classes for interwiki links and file downloads
+ print '@media screen {';
+ css_interwiki();
+ css_filetypes();
+ print '}';
+}
+
+/**
+ * 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
+ *
+ * @param string $file file system path
+ * @param string $location
+ * @return string
+ */
+function css_loadfile($file,$location=''){
+ $css_file = new DokuCssFile($file);
+ return $css_file->load($location);
+}
+
+/**
+ * Helper class to abstract loading of css/less files
+ *
+ * @author Chris Smith <chris@jalakai.co.uk>
+ */
+class DokuCssFile {
+
+ protected $filepath; // file system path to the CSS/Less file
+ protected $location; // base url location of the CSS/Less file
+ protected $relative_path = null;
+
+ public function __construct($file) {
+ $this->filepath = $file;
+ }
+
+ /**
+ * Load the contents of the css/less file and adjust any relative paths/urls (relative to this file) to be
+ * relative to the dokuwiki root: the web root (DOKU_BASE) for most files; the file system root (DOKU_INC)
+ * for less files.
+ *
+ * @param string $location base url for this file
+ * @return string the CSS/Less contents of the file
+ */
+ public function load($location='') {
+ if (!file_exists($this->filepath)) return '';
+
+ $css = io_readFile($this->filepath);
+ if (!$location) return $css;
+
+ $this->location = $location;
+
+ $css = preg_replace_callback('#(url\( *)([\'"]?)(.*?)(\2)( *\))#',array($this,'replacements'),$css);
+ $css = preg_replace_callback('#(@import\s+)([\'"])(.*?)(\2)#',array($this,'replacements'),$css);
+
+ return $css;
+ }
+
+ /**
+ * Get the relative file system path of this file, relative to dokuwiki's root folder, DOKU_INC
+ *
+ * @return string relative file system path
+ */
+ protected function getRelativePath(){
+
+ if (is_null($this->relative_path)) {
+ $basedir = array(DOKU_INC);
+
+ // during testing, files may be found relative to a second base dir, TMP_DIR
+ if (defined('DOKU_UNITTEST')) {
+ $basedir[] = realpath(TMP_DIR);
+ }
+
+ $basedir = array_map('preg_quote_cb', $basedir);
+ $regex = '/^('.join('|',$basedir).')/';
+ $this->relative_path = preg_replace($regex, '', dirname($this->filepath));
+ }
+
+ return $this->relative_path;
+ }
+
+ /**
+ * preg_replace callback to adjust relative urls from relative to this file to relative
+ * to the appropriate dokuwiki root location as described in the code
+ *
+ * @param array see http://php.net/preg_replace_callback
+ * @return string see http://php.net/preg_replace_callback
+ */
+ public function replacements($match) {
+
+ if (preg_match('#^(/|data:|https?://)#', $match[3])) { // not a relative url? - no adjustment required
+ return $match[0];
+ } elseif (substr($match[3], -5) == '.less') { // a less file import? - requires a file system location
+ if ($match[3][0] != '/') {
+ $match[3] = $this->getRelativePath() . '/' . $match[3];
+ }
+ } else { // everything else requires a url adjustment
+ $match[3] = $this->location . $match[3];
+ }
+
+ return join('',array_slice($match,1));
+ }
+}
+
+/**
+ * Convert local image URLs to data URLs if the filesize is small
+ *
+ * Callback for preg_replace_callback
+ *
+ * @param array $match
+ * @return string
+ */
+function css_datauri($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 (!empty($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>
+ *
+ * @param string $mediatype
+ * @return array
+ */
+function css_pluginstyles($mediatype='screen'){
+ $list = array();
+ $plugins = plugin_list();
+ foreach ($plugins as $p){
+ $list[DOKU_PLUGIN."$p/$mediatype.css"] = DOKU_BASE."lib/plugins/$p/";
+ $list[DOKU_PLUGIN."$p/$mediatype.less"] = DOKU_BASE."lib/plugins/$p/";
+ // alternative for screen.css
+ if ($mediatype=='screen') {
+ $list[DOKU_PLUGIN."$p/style.css"] = DOKU_BASE."lib/plugins/$p/";
+ $list[DOKU_PLUGIN."$p/style.less"] = DOKU_BASE."lib/plugins/$p/";
+ }
+ }
+ return $list;
+}
+
+/**
+ * Very simple CSS optimizer
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ *
+ * @param string $css
+ * @return string
+ */
+function css_compress($css){
+ // replace quoted strings with placeholder
+ $quote_storage = [];
+
+ $quote_cb = function ($match) use (&$quote_storage) {
+ $quote_storage[] = $match[0];
+ return '"STR'.(count($quote_storage)-1).'"';
+ };
+
+ $css = preg_replace_callback('/(([\'"]).*?(?<!\\\\)\2)/', $quote_cb, $css);
+
+ // strip comments through a callback
+ $css = preg_replace_callback('#(/\*)(.*?)(\*/)#s','css_comment_cb',$css);
+
+ // strip (incorrect but common) one line comments
+ $css = preg_replace_callback('/^.*\/\/.*$/m','css_onelinecomment_cb',$css);
+
+ // strip whitespaces
+ $css = preg_replace('![\r\n\t ]+!',' ',$css);
+ $css = preg_replace('/ ?([;,{}\/]) ?/','\\1',$css);
+ $css = preg_replace('/ ?: /',':',$css);
+
+ // number compression
+ $css = preg_replace(
+ '/([: ])0+(\.\d+?)0*((?:pt|pc|in|mm|cm|em|ex|px)\b|%)(?=[^\{]*[;\}])/',
+ '$1$2$3',
+ $css
+ ); // "0.1em" to ".1em", "1.10em" to "1.1em"
+ $css = preg_replace(
+ '/([: ])\.(0)+((?:pt|pc|in|mm|cm|em|ex|px)\b|%)(?=[^\{]*[;\}])/',
+ '$1$2',
+ $css
+ ); // ".0em" to "0"
+ $css = preg_replace(
+ '/([: ]0)0*(\.0*)?((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/',
+ '$1',
+ $css
+ ); // "0.0em" to "0"
+ $css = preg_replace(
+ '/([: ]\d+)(\.0*)((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/',
+ '$1$3',
+ $css
+ ); // "1.0em" to "1em"
+ $css = preg_replace(
+ '/([: ])0+(\d+|\d*\.\d+)((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/',
+ '$1$2$3',
+ $css
+ ); // "001em" to "1em"
+
+ // shorten attributes (1em 1em 1em 1em -> 1em)
+ $css = preg_replace(
+ '/(?<![\w\-])((?:margin|padding|border|border-(?:width|radius)):)([\w\.]+)( \2)+(?=[;\}]| !)/',
+ '$1$2',
+ $css
+ ); // "1em 1em 1em 1em" to "1em"
+ $css = preg_replace(
+ '/(?<![\w\-])((?:margin|padding|border|border-(?:width)):)([\w\.]+) ([\w\.]+) \2 \3(?=[;\}]| !)/',
+ '$1$2 $3',
+ $css
+ ); // "1em 2em 1em 2em" to "1em 2em"
+
+ // 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
+ );
+
+ // replace back protected strings
+ $quote_back_cb = function ($match) use (&$quote_storage) {
+ return $quote_storage[$match[1]];
+ };
+
+ $css = preg_replace_callback('/"STR(\d+)"/', $quote_back_cb, $css);
+ $css = trim($css);
+
+ return $css;
+}
+
+/**
+ * Callback for css_compress()
+ *
+ * Keeps short comments (< 5 chars) to maintain typical browser hacks
+ *
+ * @author Andreas Gohr <andi@splitbrain.org>
+ *
+ * @param array $matches
+ * @return string
+ */
+function css_comment_cb($matches){
+ if(strlen($matches[2]) > 4) return '';
+ return $matches[0];
+}
+
+/**
+ * Callback for css_compress()
+ *
+ * Strips one line comments but makes sure it will not destroy url() constructs with slashes
+ *
+ * @param array $matches
+ * @return string
+ */
+function css_onelinecomment_cb($matches) {
+ $line = $matches[0];
+
+ $i = 0;
+ $len = strlen($line);
+
+ while ($i< $len){
+ $nextcom = strpos($line, '//', $i);
+ $nexturl = stripos($line, 'url(', $i);
+
+ if($nextcom === false) {
+ // no more comments, we're done
+ $i = $len;
+ break;
+ }
+
+ if($nexturl === false || $nextcom < $nexturl) {
+ // no url anymore, strip comment and be done
+ $i = $nextcom;
+ break;
+ }
+
+ // we have an upcoming url
+ $i = strpos($line, ')', $nexturl);
+ }
+
+ return substr($line, 0, $i);
+}
+
+//Setup VIM: ex: et ts=4 :
generated by cgit v1.2.1 (git 2.18.0) at 2024-04-19 12:38:02 +0000