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PHP Cross Reference of DokuWiki |
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1 <?php 2 /** 3 * DokuWiki StyleSheet creator 4 * 5 * @license GPL 2 (http://www.gnu.org/licenses/gpl.html) 6 * @author Andreas Gohr <andi@splitbrain.org> 7 */ 8 9 use dokuwiki\Cache\Cache; 10 use dokuwiki\Extension\Event; 11 12 if(!defined('DOKU_INC')) define('DOKU_INC', __DIR__ .'/../../'); 13 if(!defined('NOSESSION')) define('NOSESSION',true); // we do not use a session or authentication here (better caching) 14 if(!defined('DOKU_DISABLE_GZIP_OUTPUT')) define('DOKU_DISABLE_GZIP_OUTPUT',1); // we gzip ourself here 15 if(!defined('NL')) define('NL',"\n"); 16 require_once (DOKU_INC.'inc/init.php'); 17 18 // Main (don't run when UNIT test) 19 if(!defined('SIMPLE_TEST')){ 20 header('Content-Type: text/css; charset=utf-8'); 21 css_out(); 22 } 23 24 25 // ---------------------- functions ------------------------------ 26 27 /** 28 * Output all needed Styles 29 * 30 * @author Andreas Gohr <andi@splitbrain.org> 31 */ 32 function css_out(){ 33 global $conf; 34 global $lang; 35 global $config_cascade; 36 global $INPUT; 37 38 if ($INPUT->str('s') == 'feed') { 39 $mediatypes = array('feed'); 40 $type = 'feed'; 41 } else { 42 $mediatypes = array('screen', 'all', 'print', 'speech'); 43 $type = ''; 44 } 45 46 // decide from where to get the template 47 $tpl = trim(preg_replace('/[^\w-]+/','',$INPUT->str('t'))); 48 if(!$tpl) $tpl = $conf['template']; 49 50 // load style.ini 51 $styleUtil = new \dokuwiki\StyleUtils($tpl, $INPUT->bool('preview')); 52 $styleini = $styleUtil->cssStyleini(); 53 54 // cache influencers 55 $tplinc = tpl_incdir($tpl); 56 $cache_files = getConfigFiles('main'); 57 $cache_files[] = $tplinc.'style.ini'; 58 $cache_files[] = DOKU_CONF."tpl/$tpl/style.ini"; 59 $cache_files[] = __FILE__; 60 if($INPUT->bool('preview')) $cache_files[] = $conf['cachedir'].'/preview.ini'; 61 62 // Array of needed files and their web locations, the latter ones 63 // are needed to fix relative paths in the stylesheets 64 $media_files = array(); 65 foreach($mediatypes as $mediatype) { 66 $files = array(); 67 68 // load core styles 69 $files[DOKU_INC.'lib/styles/'.$mediatype.'.css'] = DOKU_BASE.'lib/styles/'; 70 71 // load jQuery-UI theme 72 if ($mediatype == 'screen') { 73 $files[DOKU_INC.'lib/scripts/jquery/jquery-ui-theme/smoothness.css'] = 74 DOKU_BASE.'lib/scripts/jquery/jquery-ui-theme/'; 75 } 76 // load plugin styles 77 $files = array_merge($files, css_pluginstyles($mediatype)); 78 // load template styles 79 if (isset($styleini['stylesheets'][$mediatype])) { 80 $files = array_merge($files, $styleini['stylesheets'][$mediatype]); 81 } 82 // load user styles 83 if(isset($config_cascade['userstyle'][$mediatype]) and is_array($config_cascade['userstyle'][$mediatype])) { 84 foreach($config_cascade['userstyle'][$mediatype] as $userstyle) { 85 $files[$userstyle] = DOKU_BASE; 86 } 87 } 88 89 // Let plugins decide to either put more styles here or to remove some 90 $media_files[$mediatype] = css_filewrapper($mediatype, $files); 91 $CSSEvt = new Event('CSS_STYLES_INCLUDED', $media_files[$mediatype]); 92 93 // Make it preventable. 94 if ( $CSSEvt->advise_before() ) { 95 $cache_files = array_merge($cache_files, array_keys($media_files[$mediatype]['files'])); 96 } else { 97 // unset if prevented. Nothing will be printed for this mediatype. 98 unset($media_files[$mediatype]); 99 } 100 101 // finish event. 102 $CSSEvt->advise_after(); 103 } 104 105 // The generated script depends on some dynamic options 106 $cache = new Cache( 107 'styles' . 108 $_SERVER['HTTP_HOST'] . 109 $_SERVER['SERVER_PORT'] . 110 $INPUT->bool('preview') . 111 DOKU_BASE . 112 $tpl . 113 $type, 114 '.css' 115 ); 116 $cache->setEvent('CSS_CACHE_USE'); 117 118 // check cache age & handle conditional request 119 // This may exit if a cache can be used 120 $cache_ok = $cache->useCache(array('files' => $cache_files)); 121 http_cached($cache->cache, $cache_ok); 122 123 // start output buffering 124 ob_start(); 125 126 // Fire CSS_STYLES_INCLUDED for one last time to let the 127 // plugins decide whether to include the DW default styles. 128 // This can be done by preventing the Default. 129 $media_files['DW_DEFAULT'] = css_filewrapper('DW_DEFAULT'); 130 Event::createAndTrigger('CSS_STYLES_INCLUDED', $media_files['DW_DEFAULT'], 'css_defaultstyles'); 131 132 // build the stylesheet 133 foreach ($mediatypes as $mediatype) { 134 135 // Check if there is a wrapper set for this type. 136 if ( !isset($media_files[$mediatype]) ) { 137 continue; 138 } 139 140 $cssData = $media_files[$mediatype]; 141 142 // Print the styles. 143 print NL; 144 if ( $cssData['encapsulate'] === true ) print $cssData['encapsulationPrefix'] . ' {'; 145 print '/* START '.$cssData['mediatype'].' styles */'.NL; 146 147 // load files 148 foreach($cssData['files'] as $file => $location){ 149 $display = str_replace(fullpath(DOKU_INC), '', fullpath($file)); 150 print "\n/* XXXXXXXXX $display XXXXXXXXX */\n"; 151 print css_loadfile($file, $location); 152 } 153 154 print NL; 155 if ( $cssData['encapsulate'] === true ) print '} /* /@media '; 156 else print '/*'; 157 print ' END '.$cssData['mediatype'].' styles */'.NL; 158 } 159 160 // end output buffering and get contents 161 $css = ob_get_contents(); 162 ob_end_clean(); 163 164 // strip any source maps 165 stripsourcemaps($css); 166 167 // apply style replacements 168 $css = css_applystyle($css, $styleini['replacements']); 169 170 // parse less 171 $css = css_parseless($css); 172 173 // compress whitespace and comments 174 if($conf['compress']){ 175 $css = css_compress($css); 176 } 177 178 // embed small images right into the stylesheet 179 if($conf['cssdatauri']){ 180 $base = preg_quote(DOKU_BASE,'#'); 181 $css = preg_replace_callback('#(url\([ \'"]*)('.$base.')(.*?(?:\.(png|gif)))#i','css_datauri',$css); 182 } 183 184 http_cached_finish($cache->cache, $css); 185 } 186 187 /** 188 * Uses phpless to parse LESS in our CSS 189 * 190 * most of this function is error handling to show a nice useful error when 191 * LESS compilation fails 192 * 193 * @param string $css 194 * @return string 195 */ 196 function css_parseless($css) { 197 global $conf; 198 199 $less = new lessc(); 200 $less->importDir = array(DOKU_INC); 201 $less->setPreserveComments(!$conf['compress']); 202 203 if (defined('DOKU_UNITTEST')){ 204 $less->importDir[] = TMP_DIR; 205 } 206 207 try { 208 return $less->compile($css); 209 } catch(Exception $e) { 210 // get exception message 211 $msg = str_replace(array("\n", "\r", "'"), array(), $e->getMessage()); 212 213 // try to use line number to find affected file 214 if(preg_match('/line: (\d+)$/', $msg, $m)){ 215 $msg = substr($msg, 0, -1* strlen($m[0])); //remove useless linenumber 216 $lno = $m[1]; 217 218 // walk upwards to last include 219 $lines = explode("\n", $css); 220 for($i=$lno-1; $i>=0; $i--){ 221 if(preg_match('/\/(\* XXXXXXXXX )(.*?)( XXXXXXXXX \*)\//', $lines[$i], $m)){ 222 // we found it, add info to message 223 $msg .= ' in '.$m[2].' at line '.($lno-$i); 224 break; 225 } 226 } 227 } 228 229 // something went wrong 230 $error = 'A fatal error occured during compilation of the CSS files. '. 231 'If you recently installed a new plugin or template it '. 232 'might be broken and you should try disabling it again. ['.$msg.']'; 233 234 echo ".dokuwiki:before { 235 content: '$error'; 236 background-color: red; 237 display: block; 238 background-color: #fcc; 239 border-color: #ebb; 240 color: #000; 241 padding: 0.5em; 242 }"; 243 244 exit; 245 } 246 } 247 248 /** 249 * Does placeholder replacements in the style according to 250 * the ones defined in a templates style.ini file 251 * 252 * This also adds the ini defined placeholders as less variables 253 * (sans the surrounding __ and with a ini_ prefix) 254 * 255 * @author Andreas Gohr <andi@splitbrain.org> 256 * 257 * @param string $css 258 * @param array $replacements array(placeholder => value) 259 * @return string 260 */ 261 function css_applystyle($css, $replacements) { 262 // we convert ini replacements to LESS variable names 263 // and build a list of variable: value; pairs 264 $less = ''; 265 foreach((array) $replacements as $key => $value) { 266 $lkey = trim($key, '_'); 267 $lkey = '@ini_'.$lkey; 268 $less .= "$lkey: $value;\n"; 269 270 $replacements[$key] = $lkey; 271 } 272 273 // we now replace all old ini replacements with LESS variables 274 $css = strtr($css, $replacements); 275 276 // now prepend the list of LESS variables as the very first thing 277 $css = $less.$css; 278 return $css; 279 } 280 281 /** 282 * Wrapper for the files, content and mediatype for the event CSS_STYLES_INCLUDED 283 * 284 * @author Gerry Weißbach <gerry.w@gammaproduction.de> 285 * 286 * @param string $mediatype type ofthe current media files/content set 287 * @param array $files set of files that define the current mediatype 288 * @return array 289 */ 290 function css_filewrapper($mediatype, $files=array()){ 291 return array( 292 'files' => $files, 293 'mediatype' => $mediatype, 294 'encapsulate' => $mediatype != 'all', 295 'encapsulationPrefix' => '@media '.$mediatype 296 ); 297 } 298 299 /** 300 * Prints the @media encapsulated default styles of DokuWiki 301 * 302 * @author Gerry Weißbach <gerry.w@gammaproduction.de> 303 * 304 * This function is being called by a CSS_STYLES_INCLUDED event 305 * The event can be distinguished by the mediatype which is: 306 * DW_DEFAULT 307 */ 308 function css_defaultstyles(){ 309 // print the default classes for interwiki links and file downloads 310 print '@media screen {'; 311 css_interwiki(); 312 css_filetypes(); 313 print '}'; 314 } 315 316 /** 317 * Prints classes for interwikilinks 318 * 319 * Interwiki links have two classes: 'interwiki' and 'iw_$name>' where 320 * $name is the identifier given in the config. All Interwiki links get 321 * an default style with a default icon. If a special icon is available 322 * for an interwiki URL it is set in it's own class. Both classes can be 323 * overwritten in the template or userstyles. 324 * 325 * @author Andreas Gohr <andi@splitbrain.org> 326 */ 327 function css_interwiki(){ 328 329 // default style 330 echo 'a.interwiki {'; 331 echo ' background: transparent url('.DOKU_BASE.'lib/images/interwiki.png) 0 0 no-repeat;'; 332 echo ' background-size: 1.2em;'; 333 echo ' padding: 0 0 0 1.4em;'; 334 echo '}'; 335 336 // additional styles when icon available 337 $iwlinks = getInterwiki(); 338 foreach (array_keys($iwlinks) as $iw) { 339 $class = preg_replace('/[^_\-a-z0-9]+/i', '_', $iw); 340 foreach (['svg', 'png', 'gif'] as $ext) { 341 $file = 'lib/images/interwiki/' . $iw . '.' . $ext; 342 343 if (file_exists(DOKU_INC . $file)) { 344 echo "a.iw_$class {"; 345 echo ' background-image: url(' . DOKU_BASE . $file . ')'; 346 echo '}'; 347 break; 348 } 349 } 350 } 351 } 352 353 /** 354 * Prints classes for file download links 355 * 356 * @author Andreas Gohr <andi@splitbrain.org> 357 */ 358 function css_filetypes(){ 359 360 // default style 361 echo '.mediafile {'; 362 echo ' background: transparent url('.DOKU_BASE.'lib/images/fileicons/svg/file.svg) 0px 1px no-repeat;'; 363 echo ' background-size: 1.2em;'; 364 echo ' padding-left: 1.5em;'; 365 echo '}'; 366 367 // additional styles when icon available 368 // scan directory for all icons 369 $exts = array(); 370 if($dh = opendir(DOKU_INC.'lib/images/fileicons/svg')){ 371 while(false !== ($file = readdir($dh))){ 372 if(preg_match('/(.*?)\.svg$/i',$file, $match)){ 373 $exts[] = strtolower($match[1]); 374 } 375 } 376 closedir($dh); 377 } 378 foreach($exts as $ext){ 379 $class = preg_replace('/[^_\-a-z0-9]+/','_',$ext); 380 echo ".mf_$class {"; 381 echo ' background-image: url('.DOKU_BASE.'lib/images/fileicons/svg/'.$ext.'.svg)'; 382 echo '}'; 383 } 384 } 385 386 /** 387 * Loads a given file and fixes relative URLs with the 388 * given location prefix 389 * 390 * @param string $file file system path 391 * @param string $location 392 * @return string 393 */ 394 function css_loadfile($file,$location=''){ 395 $css_file = new DokuCssFile($file); 396 return $css_file->load($location); 397 } 398 399 /** 400 * Helper class to abstract loading of css/less files 401 * 402 * @author Chris Smith <chris@jalakai.co.uk> 403 */ 404 class DokuCssFile { 405 406 protected $filepath; // file system path to the CSS/Less file 407 protected $location; // base url location of the CSS/Less file 408 protected $relative_path = null; 409 410 public function __construct($file) { 411 $this->filepath = $file; 412 } 413 414 /** 415 * Load the contents of the css/less file and adjust any relative paths/urls (relative to this file) to be 416 * relative to the dokuwiki root: the web root (DOKU_BASE) for most files; the file system root (DOKU_INC) 417 * for less files. 418 * 419 * @param string $location base url for this file 420 * @return string the CSS/Less contents of the file 421 */ 422 public function load($location='') { 423 if (!file_exists($this->filepath)) return ''; 424 425 $css = io_readFile($this->filepath); 426 if (!$location) return $css; 427 428 $this->location = $location; 429 430 $css = preg_replace_callback('#(url\( *)([\'"]?)(.*?)(\2)( *\))#',array($this,'replacements'),$css); 431 $css = preg_replace_callback('#(@import\s+)([\'"])(.*?)(\2)#',array($this,'replacements'),$css); 432 433 return $css; 434 } 435 436 /** 437 * Get the relative file system path of this file, relative to dokuwiki's root folder, DOKU_INC 438 * 439 * @return string relative file system path 440 */ 441 protected function getRelativePath(){ 442 443 if (is_null($this->relative_path)) { 444 $basedir = array(DOKU_INC); 445 446 // during testing, files may be found relative to a second base dir, TMP_DIR 447 if (defined('DOKU_UNITTEST')) { 448 $basedir[] = realpath(TMP_DIR); 449 } 450 451 $basedir = array_map('preg_quote_cb', $basedir); 452 $regex = '/^('.join('|',$basedir).')/'; 453 $this->relative_path = preg_replace($regex, '', dirname($this->filepath)); 454 } 455 456 return $this->relative_path; 457 } 458 459 /** 460 * preg_replace callback to adjust relative urls from relative to this file to relative 461 * to the appropriate dokuwiki root location as described in the code 462 * 463 * @param array see http://php.net/preg_replace_callback 464 * @return string see http://php.net/preg_replace_callback 465 */ 466 public function replacements($match) { 467 468 if (preg_match('#^(/|data:|https?://)#', $match[3])) { // not a relative url? - no adjustment required 469 return $match[0]; 470 } elseif (substr($match[3], -5) == '.less') { // a less file import? - requires a file system location 471 if ($match[3][0] != '/') { 472 $match[3] = $this->getRelativePath() . '/' . $match[3]; 473 } 474 } else { // everything else requires a url adjustment 475 $match[3] = $this->location . $match[3]; 476 } 477 478 return join('',array_slice($match,1)); 479 } 480 } 481 482 /** 483 * Convert local image URLs to data URLs if the filesize is small 484 * 485 * Callback for preg_replace_callback 486 * 487 * @param array $match 488 * @return string 489 */ 490 function css_datauri($match){ 491 global $conf; 492 493 $pre = unslash($match[1]); 494 $base = unslash($match[2]); 495 $url = unslash($match[3]); 496 $ext = unslash($match[4]); 497 498 $local = DOKU_INC.$url; 499 $size = @filesize($local); 500 if($size && $size < $conf['cssdatauri']){ 501 $data = base64_encode(file_get_contents($local)); 502 } 503 if (!empty($data)){ 504 $url = 'data:image/'.$ext.';base64,'.$data; 505 }else{ 506 $url = $base.$url; 507 } 508 return $pre.$url; 509 } 510 511 512 /** 513 * Returns a list of possible Plugin Styles (no existance check here) 514 * 515 * @author Andreas Gohr <andi@splitbrain.org> 516 * 517 * @param string $mediatype 518 * @return array 519 */ 520 function css_pluginstyles($mediatype='screen'){ 521 $list = array(); 522 $plugins = plugin_list(); 523 foreach ($plugins as $p){ 524 $list[DOKU_PLUGIN."$p/$mediatype.css"] = DOKU_BASE."lib/plugins/$p/"; 525 $list[DOKU_PLUGIN."$p/$mediatype.less"] = DOKU_BASE."lib/plugins/$p/"; 526 // alternative for screen.css 527 if ($mediatype=='screen') { 528 $list[DOKU_PLUGIN."$p/style.css"] = DOKU_BASE."lib/plugins/$p/"; 529 $list[DOKU_PLUGIN."$p/style.less"] = DOKU_BASE."lib/plugins/$p/"; 530 } 531 } 532 return $list; 533 } 534 535 /** 536 * Very simple CSS optimizer 537 * 538 * @author Andreas Gohr <andi@splitbrain.org> 539 * 540 * @param string $css 541 * @return string 542 */ 543 function css_compress($css){ 544 // replace quoted strings with placeholder 545 $quote_storage = []; 546 547 $quote_cb = function ($match) use (&$quote_storage) { 548 $quote_storage[] = $match[0]; 549 return '"STR'.(count($quote_storage)-1).'"'; 550 }; 551 552 $css = preg_replace_callback('/(([\'"]).*?(?<!\\\\)\2)/', $quote_cb, $css); 553 554 // strip comments through a callback 555 $css = preg_replace_callback('#(/\*)(.*?)(\*/)#s','css_comment_cb',$css); 556 557 // strip (incorrect but common) one line comments 558 $css = preg_replace_callback('/^.*\/\/.*$/m','css_onelinecomment_cb',$css); 559 560 // strip whitespaces 561 $css = preg_replace('![\r\n\t ]+!',' ',$css); 562 $css = preg_replace('/ ?([;,{}\/]) ?/','\\1',$css); 563 $css = preg_replace('/ ?: /',':',$css); 564 565 // number compression 566 $css = preg_replace( 567 '/([: ])0+(\.\d+?)0*((?:pt|pc|in|mm|cm|em|ex|px)\b|%)(?=[^\{]*[;\}])/', 568 '$1$2$3', 569 $css 570 ); // "0.1em" to ".1em", "1.10em" to "1.1em" 571 $css = preg_replace( 572 '/([: ])\.(0)+((?:pt|pc|in|mm|cm|em|ex|px)\b|%)(?=[^\{]*[;\}])/', 573 '$1$2', 574 $css 575 ); // ".0em" to "0" 576 $css = preg_replace( 577 '/([: ]0)0*(\.0*)?((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/', 578 '$1', 579 $css 580 ); // "0.0em" to "0" 581 $css = preg_replace( 582 '/([: ]\d+)(\.0*)((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/', 583 '$1$3', 584 $css 585 ); // "1.0em" to "1em" 586 $css = preg_replace( 587 '/([: ])0+(\d+|\d*\.\d+)((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/', 588 '$1$2$3', 589 $css 590 ); // "001em" to "1em" 591 592 // shorten attributes (1em 1em 1em 1em -> 1em) 593 $css = preg_replace( 594 '/(?<![\w\-])((?:margin|padding|border|border-(?:width|radius)):)([\w\.]+)( \2)+(?=[;\}]| !)/', 595 '$1$2', 596 $css 597 ); // "1em 1em 1em 1em" to "1em" 598 $css = preg_replace( 599 '/(?<![\w\-])((?:margin|padding|border|border-(?:width)):)([\w\.]+) ([\w\.]+) \2 \3(?=[;\}]| !)/', 600 '$1$2 $3', 601 $css 602 ); // "1em 2em 1em 2em" to "1em 2em" 603 604 // shorten colors 605 $css = preg_replace( 606 "/#([0-9a-fA-F]{1})\\1([0-9a-fA-F]{1})\\2([0-9a-fA-F]{1})\\3(?=[^\{]*[;\}])/", 607 "#\\1\\2\\3", 608 $css 609 ); 610 611 // replace back protected strings 612 $quote_back_cb = function ($match) use (&$quote_storage) { 613 return $quote_storage[$match[1]]; 614 }; 615 616 $css = preg_replace_callback('/"STR(\d+)"/', $quote_back_cb, $css); 617 $css = trim($css); 618 619 return $css; 620 } 621 622 /** 623 * Callback for css_compress() 624 * 625 * Keeps short comments (< 5 chars) to maintain typical browser hacks 626 * 627 * @author Andreas Gohr <andi@splitbrain.org> 628 * 629 * @param array $matches 630 * @return string 631 */ 632 function css_comment_cb($matches){ 633 if(strlen($matches[2]) > 4) return ''; 634 return $matches[0]; 635 } 636 637 /** 638 * Callback for css_compress() 639 * 640 * Strips one line comments but makes sure it will not destroy url() constructs with slashes 641 * 642 * @param array $matches 643 * @return string 644 */ 645 function css_onelinecomment_cb($matches) { 646 $line = $matches[0]; 647 648 $i = 0; 649 $len = strlen($line); 650 651 while ($i< $len){ 652 $nextcom = strpos($line, '//', $i); 653 $nexturl = stripos($line, 'url(', $i); 654 655 if($nextcom === false) { 656 // no more comments, we're done 657 $i = $len; 658 break; 659 } 660 661 if($nexturl === false || $nextcom < $nexturl) { 662 // no url anymore, strip comment and be done 663 $i = $nextcom; 664 break; 665 } 666 667 // we have an upcoming url 668 $i = strpos($line, ')', $nexturl); 669 } 670 671 return substr($line, 0, $i); 672 } 673 674 //Setup VIM: ex: et ts=4 :
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