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 9if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../'); 10if(!defined('NOSESSION')) define('NOSESSION',true); // we do not use a session or authentication here (better caching) 11if(!defined('DOKU_DISABLE_GZIP_OUTPUT')) define('DOKU_DISABLE_GZIP_OUTPUT',1); // we gzip ourself here 12if(!defined('NL')) define('NL',"\n"); 13require_once(DOKU_INC.'inc/init.php'); 14 15// Main (don't run when UNIT test) 16if(!defined('SIMPLE_TEST')){ 17 header('Content-Type: text/css; charset=utf-8'); 18 css_out(); 19} 20 21 22// ---------------------- functions ------------------------------ 23 24/** 25 * Output all needed Styles 26 * 27 * @author Andreas Gohr <andi@splitbrain.org> 28 */ 29function css_out(){ 30 global $conf; 31 global $lang; 32 global $config_cascade; 33 global $INPUT; 34 35 if ($INPUT->str('s') == 'feed') { 36 $mediatypes = array('feed'); 37 $type = 'feed'; 38 } else { 39 $mediatypes = array('screen', 'all', 'print', 'speech'); 40 $type = ''; 41 } 42 43 // decide from where to get the template 44 $tpl = trim(preg_replace('/[^\w-]+/','',$INPUT->str('t'))); 45 if(!$tpl) $tpl = $conf['template']; 46 47 // load styl.ini 48 $styleini = css_styleini($tpl $INPUT->bool('preview')); 49 50 // cache influencers 51 $tplinc = tpl_incdir($tpl); 52 $cache_files = getConfigFiles('main'); 53 $cache_files[] = $tplinc.'style.ini'; 54 $cache_files[] = DOKU_CONF."tpl/$tpl/style.ini"; 55 $cache_files[] = DOKU_CONF."tpl/$tpl/ini/".$flavour.".ini"; 56 $cache_files[] = __FILE__; 57 if($INPUT->bool('preview')) $cache_files[] = $conf['cachedir'].'/preview.ini'; 58 59 // Array of needed files and their web locations, the latter ones 60 // are needed to fix relative paths in the stylesheets 61 $media_files = array(); 62 foreach($mediatypes as $mediatype) { 63 $files = array(); 64 65 // load core styles 66 $files[DOKU_INC.'lib/styles/'.$mediatype.'.css'] = DOKU_BASE.'lib/styles/'; 67 68 // load jQuery-UI theme 69 if ($mediatype == 'screen') { 70 $files[DOKU_INC.'lib/scripts/jquery/jquery-ui-theme/smoothness.css'] = DOKU_BASE.'lib/scripts/jquery/jquery-ui-theme/'; 71 } 72 // load plugin styles 73 $files = array_merge($files, css_pluginstyles($mediatype)); 74 // load template styles 75 if (isset($styleini['stylesheets'][$mediatype])) { 76 $files = array_merge($files, $styleini['stylesheets'][$mediatype]); 77 } 78 // load user styles 79 if(!empty($config_cascade['userstyle'][$mediatype])) { 80 foreach($config_cascade['userstyle'][$mediatype] as $userstyle) { 81 $files[$userstyle] = DOKU_BASE; 82 } 83 } 84 85 // Let plugins decide to either put more styles here or to remove some 86 $media_files[$mediatype] = css_filewrapper($mediatype, $files); 87 $CSSEvt = new Doku_Event('CSS_STYLES_INCLUDED', $media_files[$mediatype]); 88 89 // Make it preventable. 90 if ( $CSSEvt->advise_before() ) { 91 $cache_files = array_merge($cache_files, array_keys($media_files[$mediatype]['files'])); 92 } else { 93 // unset if prevented. Nothing will be printed for this mediatype. 94 unset($media_files[$mediatype]); 95 } 96 97 // finish event. 98 $CSSEvt->advise_after(); 99 } 100 101 // The generated script depends on some dynamic options 102 $cache = new cache('styles'.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'].DOKU_BASE.$tpl.$type,'.css'); 103 $cache->_event = 'CSS_CACHE_USE'; 104 105 // check cache age & handle conditional request 106 // This may exit if a cache can be used 107 http_cached($cache->cache, 108 $cache->useCache(array('files' => $cache_files))); 109 110 // start output buffering 111 ob_start(); 112 113 // Fire CSS_STYLES_INCLUDED for one last time to let the 114 // plugins decide whether to include the DW default styles. 115 // This can be done by preventing the Default. 116 $media_files['DW_DEFAULT'] = css_filewrapper('DW_DEFAULT'); 117 trigger_event('CSS_STYLES_INCLUDED', $media_files['DW_DEFAULT'], 'css_defaultstyles'); 118 119 // build the stylesheet 120 foreach ($mediatypes as $mediatype) { 121 122 // Check if there is a wrapper set for this type. 123 if ( !isset($media_files[$mediatype]) ) { 124 continue; 125 } 126 127 $cssData = $media_files[$mediatype]; 128 129 // Print the styles. 130 print NL; 131 if ( $cssData['encapsulate'] === true ) print $cssData['encapsulationPrefix'] . ' {'; 132 print '/* START '.$cssData['mediatype'].' styles */'.NL; 133 134 // load files 135 foreach($cssData['files'] as $file => $location){ 136 $display = str_replace(fullpath(DOKU_INC), '', fullpath($file)); 137 print "\n/* XXXXXXXXX $display XXXXXXXXX */\n"; 138 print css_loadfile($file, $location); 139 } 140 141 print NL; 142 if ( $cssData['encapsulate'] === true ) print '} /* /@media '; 143 else print '/*'; 144 print ' END '.$cssData['mediatype'].' styles */'.NL; 145 } 146 147 // end output buffering and get contents 148 $css = ob_get_contents(); 149 ob_end_clean(); 150 151 // strip any source maps 152 stripsourcemaps($css); 153 154 // apply style replacements 155 $css = css_applystyle($css, $styleini['replacements']); 156 157 // parse less 158 $css = css_parseless($css); 159 160 // compress whitespace and comments 161 if($conf['compress']){ 162 $css = css_compress($css); 163 } 164 165 // embed small images right into the stylesheet 166 if($conf['cssdatauri']){ 167 $base = preg_quote(DOKU_BASE,'#'); 168 $css = preg_replace_callback('#(url\([ \'"]*)('.$base.')(.*?(?:\.(png|gif)))#i','css_datauri',$css); 169 } 170 171 http_cached_finish($cache->cache, $css); 172} 173 174/** 175 * Uses phpless to parse LESS in our CSS 176 * 177 * most of this function is error handling to show a nice useful error when 178 * LESS compilation fails 179 * 180 * @param string $css 181 * @return string 182 */ 183function css_parseless($css) { 184 global $conf; 185 186 $less = new lessc(); 187 $less->importDir = array(DOKU_INC); 188 $less->setPreserveComments(!$conf['compress']); 189 190 if (defined('DOKU_UNITTEST')){ 191 $less->importDir[] = TMP_DIR; 192 } 193 194 try { 195 return $less->compile($css); 196 } catch(Exception $e) { 197 // get exception message 198 $msg = str_replace(array("\n", "\r", "'"), array(), $e->getMessage()); 199 200 // try to use line number to find affected file 201 if(preg_match('/line: (\d+)$/', $msg, $m)){ 202 $msg = substr($msg, 0, -1* strlen($m[0])); //remove useless linenumber 203 $lno = $m[1]; 204 205 // walk upwards to last include 206 $lines = explode("\n", $css); 207 for($i=$lno-1; $i>=0; $i--){ 208 if(preg_match('/\/(\* XXXXXXXXX )(.*?)( XXXXXXXXX \*)\//', $lines[$i], $m)){ 209 // we found it, add info to message 210 $msg .= ' in '.$m[2].' at line '.($lno-$i); 211 break; 212 } 213 } 214 } 215 216 // something went wrong 217 $error = 'A fatal error occured during compilation of the CSS files. '. 218 'If you recently installed a new plugin or template it '. 219 'might be broken and you should try disabling it again. ['.$msg.']'; 220 221 echo ".dokuwiki:before { 222 content: '$error'; 223 background-color: red; 224 display: block; 225 background-color: #fcc; 226 border-color: #ebb; 227 color: #000; 228 padding: 0.5em; 229 }"; 230 231 exit; 232 } 233} 234 235/** 236 * Does placeholder replacements in the style according to 237 * the ones defined in a templates style.ini file 238 * 239 * This also adds the ini defined placeholders as less variables 240 * (sans the surrounding __ and with a ini_ prefix) 241 * 242 * @author Andreas Gohr <andi@splitbrain.org> 243 * 244 * @param string $css 245 * @param array $replacements array(placeholder => value) 246 * @return string 247 */ 248function css_applystyle($css, $replacements) { 249 // we convert ini replacements to LESS variable names 250 // and build a list of variable: value; pairs 251 $less = ''; 252 foreach((array) $replacements as $key => $value) { 253 $lkey = trim($key, '_'); 254 $lkey = '@ini_'.$lkey; 255 $less .= "$lkey: $value;\n"; 256 257 $replacements[$key] = $lkey; 258 } 259 260 // we now replace all old ini replacements with LESS variables 261 $css = strtr($css, $replacements); 262 263 // now prepend the list of LESS variables as the very first thing 264 $css = $less.$css; 265 return $css; 266} 267 268/** 269 * Load style ini contents 270 * 271 * Loads and merges style.ini files from template and config and prepares 272 * the stylesheet modes 273 * 274 * @author Andreas Gohr <andi@splitbrain.org> 275 * 276 * @param string $tpl the used template 277 * @param bool $preview load preview replacements 278 * @return array with keys 'stylesheets' and 'replacements' 279 */ 280function css_styleini($tpl, $preview=false) { 281 global $conf; 282 283 $stylesheets = array(); // mode, file => base 284 $replacements = array(); // placeholder => value 285 286 // load template's style.ini 287 $incbase = tpl_incdir($tpl); 288 $webbase = tpl_basedir($tpl); 289 $ini = $incbase.'style.ini'; 290 if(file_exists($ini)){ 291 $data = parse_ini_file($ini, true); 292 293 // stylesheets 294 if(is_array($data['stylesheets'])) foreach($data['stylesheets'] as $file => $mode){ 295 $stylesheets[$mode][$incbase.$file] = $webbase; 296 } 297 298 // replacements 299 if(is_array($data['replacements'])){ 300 $replacements = array_merge($replacements, css_fixreplacementurls($data['replacements'],$webbase)); 301 } 302 } 303 304 // load configs's style.ini 305 $webbase = DOKU_BASE; 306 $ini = DOKU_CONF."tpl/$tpl/style.ini"; 307 $incbase = dirname($ini).'/'; 308 if(file_exists($ini)){ 309 $data = parse_ini_file($ini, true); 310 311 // stylesheets 312 if(isset($data['stylesheets']) && is_array($data['stylesheets'])) foreach($data['stylesheets'] as $file => $mode){ 313 $stylesheets[$mode][$incbase.$file] = $webbase; 314 } 315 316 // replacements 317 if(isset($data['replacements']) && is_array($data['replacements'])){ 318 $replacements = array_merge($replacements, css_fixreplacementurls($data['replacements'],$webbase)); 319 } 320 } 321 322 // allow replacement overwrites in preview mode 323 if($preview) { 324 $webbase = DOKU_BASE; 325 $ini = $conf['cachedir'].'/preview.ini'; 326 if(file_exists($ini)) { 327 $data = parse_ini_file($ini, true); 328 // replacements 329 if(is_array($data['replacements'])) { 330 $replacements = array_merge($replacements, css_fixreplacementurls($data['replacements'], $webbase)); 331 } 332 } 333 } 334 335 return array( 336 'stylesheets' => $stylesheets, 337 'replacements' => $replacements 338 ); 339} 340 341/** 342 * Amend paths used in replacement relative urls, refer FS#2879 343 * 344 * @author Chris Smith <chris@jalakai.co.uk> 345 * 346 * @param array $replacements with key-value pairs 347 * @param string $location 348 * @return array 349 */ 350function css_fixreplacementurls($replacements, $location) { 351 foreach($replacements as $key => $value) { 352 $replacements[$key] = preg_replace('#(url\([ \'"]*)(?!/|data:|http://|https://| |\'|")#','\\1'.$location,$value); 353 } 354 return $replacements; 355} 356 357/** 358 * Wrapper for the files, content and mediatype for the event CSS_STYLES_INCLUDED 359 * 360 * @author Gerry Weißbach <gerry.w@gammaproduction.de> 361 * 362 * @param string $mediatype type ofthe current media files/content set 363 * @param array $files set of files that define the current mediatype 364 * @return array 365 */ 366function css_filewrapper($mediatype, $files=array()){ 367 return array( 368 'files' => $files, 369 'mediatype' => $mediatype, 370 'encapsulate' => in_array($mediatype, array('screen', 'print', 'speech')), 371 'encapsulationPrefix' => '@media '.$mediatype 372 ); 373} 374 375/** 376 * Prints the @media encapsulated default styles of DokuWiki 377 * 378 * @author Gerry Weißbach <gerry.w@gammaproduction.de> 379 * 380 * This function is being called by a CSS_STYLES_INCLUDED event 381 * The event can be distinguished by the mediatype which is: 382 * DW_DEFAULT 383 */ 384function css_defaultstyles(){ 385 // print the default classes for interwiki links and file downloads 386 print '@media screen {'; 387 css_interwiki(); 388 css_filetypes(); 389 print '}'; 390} 391 392/** 393 * Prints classes for interwikilinks 394 * 395 * Interwiki links have two classes: 'interwiki' and 'iw_$name>' where 396 * $name is the identifier given in the config. All Interwiki links get 397 * an default style with a default icon. If a special icon is available 398 * for an interwiki URL it is set in it's own class. Both classes can be 399 * overwritten in the template or userstyles. 400 * 401 * @author Andreas Gohr <andi@splitbrain.org> 402 */ 403function css_interwiki(){ 404 405 // default style 406 echo 'a.interwiki {'; 407 echo ' background: transparent url('.DOKU_BASE.'lib/images/interwiki.png) 0px 1px no-repeat;'; 408 echo ' padding: 1px 0px 1px 16px;'; 409 echo '}'; 410 411 // additional styles when icon available 412 $iwlinks = getInterwiki(); 413 foreach(array_keys($iwlinks) as $iw){ 414 $class = preg_replace('/[^_\-a-z0-9]+/i','_',$iw); 415 if(file_exists(DOKU_INC.'lib/images/interwiki/'.$iw.'.png')){ 416 echo "a.iw_$class {"; 417 echo ' background-image: url('.DOKU_BASE.'lib/images/interwiki/'.$iw.'.png)'; 418 echo '}'; 419 }elseif(file_exists(DOKU_INC.'lib/images/interwiki/'.$iw.'.gif')){ 420 echo "a.iw_$class {"; 421 echo ' background-image: url('.DOKU_BASE.'lib/images/interwiki/'.$iw.'.gif)'; 422 echo '}'; 423 } 424 } 425} 426 427/** 428 * Prints classes for file download links 429 * 430 * @author Andreas Gohr <andi@splitbrain.org> 431 */ 432function css_filetypes(){ 433 434 // default style 435 echo '.mediafile {'; 436 echo ' background: transparent url('.DOKU_BASE.'lib/images/fileicons/file.png) 0px 1px no-repeat;'; 437 echo ' padding-left: 18px;'; 438 echo ' padding-bottom: 1px;'; 439 echo '}'; 440 441 // additional styles when icon available 442 // scan directory for all icons 443 $exts = array(); 444 if($dh = opendir(DOKU_INC.'lib/images/fileicons')){ 445 while(false !== ($file = readdir($dh))){ 446 if(preg_match('/([_\-a-z0-9]+(?:\.[_\-a-z0-9]+)*?)\.(png|gif)/i',$file,$match)){ 447 $ext = strtolower($match[1]); 448 $type = '.'.strtolower($match[2]); 449 if($ext!='file' && (!isset($exts[$ext]) || $type=='.png')){ 450 $exts[$ext] = $type; 451 } 452 } 453 } 454 closedir($dh); 455 } 456 foreach($exts as $ext=>$type){ 457 $class = preg_replace('/[^_\-a-z0-9]+/','_',$ext); 458 echo ".mf_$class {"; 459 echo ' background-image: url('.DOKU_BASE.'lib/images/fileicons/'.$ext.$type.')'; 460 echo '}'; 461 } 462} 463 464/** 465 * Loads a given file and fixes relative URLs with the 466 * given location prefix 467 * 468 * @param string $file file system path 469 * @param string $location 470 * @return string 471 */ 472function css_loadfile($file,$location=''){ 473 $css_file = new DokuCssFile($file); 474 return $css_file->load($location); 475} 476 477/** 478 * Helper class to abstract loading of css/less files 479 * 480 * @author Chris Smith <chris@jalakai.co.uk> 481 */ 482class DokuCssFile { 483 484 protected $filepath; // file system path to the CSS/Less file 485 protected $location; // base url location of the CSS/Less file 486 protected $relative_path = null; 487 488 public function __construct($file) { 489 $this->filepath = $file; 490 } 491 492 /** 493 * Load the contents of the css/less file and adjust any relative paths/urls (relative to this file) to be 494 * relative to the dokuwiki root: the web root (DOKU_BASE) for most files; the file system root (DOKU_INC) 495 * for less files. 496 * 497 * @param string $location base url for this file 498 * @return string the CSS/Less contents of the file 499 */ 500 public function load($location='') { 501 if (!file_exists($this->filepath)) return ''; 502 503 $css = io_readFile($this->filepath); 504 if (!$location) return $css; 505 506 $this->location = $location; 507 508 $css = preg_replace_callback('#(url\( *)([\'"]?)(.*?)(\2)( *\))#',array($this,'replacements'),$css); 509 $css = preg_replace_callback('#(@import\s+)([\'"])(.*?)(\2)#',array($this,'replacements'),$css); 510 511 return $css; 512 } 513 514 /** 515 * Get the relative file system path of this file, relative to dokuwiki's root folder, DOKU_INC 516 * 517 * @return string relative file system path 518 */ 519 protected function getRelativePath(){ 520 521 if (is_null($this->relative_path)) { 522 $basedir = array(DOKU_INC); 523 524 // during testing, files may be found relative to a second base dir, TMP_DIR 525 if (defined('DOKU_UNITTEST')) { 526 $basedir[] = realpath(TMP_DIR); 527 } 528 529 $basedir = array_map('preg_quote_cb', $basedir); 530 $regex = '/^('.join('|',$basedir).')/'; 531 $this->relative_path = preg_replace($regex, '', dirname($this->filepath)); 532 } 533 534 return $this->relative_path; 535 } 536 537 /** 538 * preg_replace callback to adjust relative urls from relative to this file to relative 539 * to the appropriate dokuwiki root location as described in the code 540 * 541 * @param array see http://php.net/preg_replace_callback 542 * @return string see http://php.net/preg_replace_callback 543 */ 544 public function replacements($match) { 545 546 // not a relative url? - no adjustment required 547 if (preg_match('#^(/|data:|https?://)#',$match[3])) { 548 return $match[0]; 549 } 550 // a less file import? - requires a file system location 551 else if (substr($match[3],-5) == '.less') { 552 if ($match[3]{0} != '/') { 553 $match[3] = $this->getRelativePath() . '/' . $match[3]; 554 } 555 } 556 // everything else requires a url adjustment 557 else { 558 $match[3] = $this->location . $match[3]; 559 } 560 561 return join('',array_slice($match,1)); 562 } 563} 564 565/** 566 * Convert local image URLs to data URLs if the filesize is small 567 * 568 * Callback for preg_replace_callback 569 * 570 * @param array $match 571 * @return string 572 */ 573function css_datauri($match){ 574 global $conf; 575 576 $pre = unslash($match[1]); 577 $base = unslash($match[2]); 578 $url = unslash($match[3]); 579 $ext = unslash($match[4]); 580 581 $local = DOKU_INC.$url; 582 $size = @filesize($local); 583 if($size && $size < $conf['cssdatauri']){ 584 $data = base64_encode(file_get_contents($local)); 585 } 586 if($data){ 587 $url = 'data:image/'.$ext.';base64,'.$data; 588 }else{ 589 $url = $base.$url; 590 } 591 return $pre.$url; 592} 593 594 595/** 596 * Returns a list of possible Plugin Styles (no existance check here) 597 * 598 * @author Andreas Gohr <andi@splitbrain.org> 599 * 600 * @param string $mediatype 601 * @return array 602 */ 603function css_pluginstyles($mediatype='screen'){ 604 $list = array(); 605 $plugins = plugin_list(); 606 foreach ($plugins as $p){ 607 $list[DOKU_PLUGIN."$p/$mediatype.css"] = DOKU_BASE."lib/plugins/$p/"; 608 $list[DOKU_PLUGIN."$p/$mediatype.less"] = DOKU_BASE."lib/plugins/$p/"; 609 // alternative for screen.css 610 if ($mediatype=='screen') { 611 $list[DOKU_PLUGIN."$p/style.css"] = DOKU_BASE."lib/plugins/$p/"; 612 $list[DOKU_PLUGIN."$p/style.less"] = DOKU_BASE."lib/plugins/$p/"; 613 } 614 } 615 return $list; 616} 617 618/** 619 * Very simple CSS optimizer 620 * 621 * @author Andreas Gohr <andi@splitbrain.org> 622 * 623 * @param string $css 624 * @return string 625 */ 626function css_compress($css){ 627 //strip comments through a callback 628 $css = preg_replace_callback('#(/\*)(.*?)(\*/)#s','css_comment_cb',$css); 629 630 //strip (incorrect but common) one line comments 631 $css = preg_replace_callback('/^.*\/\/.*$/m','css_onelinecomment_cb',$css); 632 633 // strip whitespaces 634 $css = preg_replace('![\r\n\t ]+!',' ',$css); 635 $css = preg_replace('/ ?([;,{}\/]) ?/','\\1',$css); 636 $css = preg_replace('/ ?: /',':',$css); 637 638 // number compression 639 $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" 640 $css = preg_replace('/([: ])\.(0)+((?:pt|pc|in|mm|cm|em|ex|px)\b|%)(?=[^\{]*[;\}])/', '$1$2', $css); // ".0em" to "0" 641 $css = preg_replace('/([: ]0)0*(\.0*)?((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/', '$1', $css); // "0.0em" to "0" 642 $css = preg_replace('/([: ]\d+)(\.0*)((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/', '$1$3', $css); // "1.0em" to "1em" 643 $css = preg_replace('/([: ])0+(\d+|\d*\.\d+)((?:pt|pc|in|mm|cm|em|ex|px)(?=[^\{]*[;\}])\b|%)/', '$1$2$3', $css); // "001em" to "1em" 644 645 // shorten attributes (1em 1em 1em 1em -> 1em) 646 $css = preg_replace('/(?<![\w\-])((?:margin|padding|border|border-(?:width|radius)):)([\w\.]+)( \2)+(?=[;\}]| !)/', '$1$2', $css); // "1em 1em 1em 1em" to "1em" 647 $css = preg_replace('/(?<![\w\-])((?:margin|padding|border|border-(?:width)):)([\w\.]+) ([\w\.]+) \2 \3(?=[;\}]| !)/', '$1$2 $3', $css); // "1em 2em 1em 2em" to "1em 2em" 648 649 // shorten colors 650 $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); 651 652 return $css; 653} 654 655/** 656 * Callback for css_compress() 657 * 658 * Keeps short comments (< 5 chars) to maintain typical browser hacks 659 * 660 * @author Andreas Gohr <andi@splitbrain.org> 661 * 662 * @param array $matches 663 * @return string 664 */ 665function css_comment_cb($matches){ 666 if(strlen($matches[2]) > 4) return ''; 667 return $matches[0]; 668} 669 670/** 671 * Callback for css_compress() 672 * 673 * Strips one line comments but makes sure it will not destroy url() constructs with slashes 674 * 675 * @param array $matches 676 * @return string 677 */ 678function css_onelinecomment_cb($matches) { 679 $line = $matches[0]; 680 681 $i = 0; 682 $len = strlen($line); 683 684 while ($i< $len){ 685 $nextcom = strpos($line, '//', $i); 686 $nexturl = stripos($line, 'url(', $i); 687 688 if($nextcom === false) { 689 // no more comments, we're done 690 $i = $len; 691 break; 692 } 693 694 // keep any quoted string that starts before a comment 695 $nextsqt = strpos($line, "'", $i); 696 $nextdqt = strpos($line, '"', $i); 697 if(min($nextsqt, $nextdqt) < $nextcom) { 698 $skipto = false; 699 if($nextsqt !== false && ($nextdqt === false || $nextsqt < $nextdqt)) { 700 $skipto = strpos($line, "'", $nextsqt+1) +1; 701 } else if ($nextdqt !== false) { 702 $skipto = strpos($line, '"', $nextdqt+1) +1; 703 } 704 705 if($skipto !== false) { 706 $i = $skipto; 707 continue; 708 } 709 } 710 711 if($nexturl === false || $nextcom < $nexturl) { 712 // no url anymore, strip comment and be done 713 $i = $nextcom; 714 break; 715 } 716 717 // we have an upcoming url 718 $i = strpos($line, ')', $nexturl); 719 } 720 721 return substr($line, 0, $i); 722} 723 724//Setup VIM: ex: et ts=4 : 725
