| 1 |
<?php |
| 2 |
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly |
| 3 |
|
| 4 |
class autoptimizeScripts extends autoptimizeBase { |
| 5 |
private $scripts = array(); |
| 6 |
private $dontmove = array('document.write','html5.js','show_ads.js','google_ad','blogcatalog.com/w','tweetmeme.com/i','mybloglog.com/','histats.com/js','ads.smowtion.com/ad.js','statcounter.com/counter/counter.js','widgets.amung.us','ws.amazon.com/widgets','media.fastclick.net','/ads/','comment-form-quicktags/quicktags.php','edToolbar','intensedebate.com','scripts.chitika.net/','_gaq.push','jotform.com/','admin-bar.min.js','GoogleAnalyticsObject','plupload.full.min.js','syntaxhighlighter','adsbygoogle','gist.github.com','_stq','nonce','post_id','data-noptimize'); |
| 7 |
private $domove = array('gaJsHost','load_cmc','jd.gallery.transitions.js','swfobject.embedSWF(','tiny_mce.js','tinyMCEPreInit.go'); |
| 8 |
private $domovelast = array('addthis.com','/afsonline/show_afs_search.js','disqus.js','networkedblogs.com/getnetworkwidget','infolinks.com/js/','jd.gallery.js.php','jd.gallery.transitions.js','swfobject.embedSWF(','linkwithin.com/widget.js','tiny_mce.js','tinyMCEPreInit.go'); |
| 9 |
private $trycatch = false; |
| 10 |
private $alreadyminified = false; |
| 11 |
private $forcehead = true; |
| 12 |
private $include_inline = false; |
| 13 |
private $jscode = ''; |
| 14 |
private $url = ''; |
| 15 |
private $move = array('first' => array(), 'last' => array()); |
| 16 |
private $restofcontent = ''; |
| 17 |
private $md5hash = ''; |
| 18 |
private $whitelist = ''; |
| 19 |
private $jsremovables = array(); |
| 20 |
private $inject_min_late = ''; |
| 21 |
|
| 22 |
//Reads the page and collects script tags |
| 23 |
public function read($options) { |
| 24 |
$noptimizeJS = apply_filters( 'autoptimize_filter_js_noptimize', false, $this->content ); |
| 25 |
if ($noptimizeJS) return false; |
| 26 |
|
| 27 |
// only optimize known good JS? |
| 28 |
$whitelistJS = apply_filters( 'autoptimize_filter_js_whitelist', '', $this->content ); |
| 29 |
if (!empty($whitelistJS)) { |
| 30 |
$this->whitelist = array_filter(array_map('trim',explode(",",$whitelistJS))); |
| 31 |
} |
| 32 |
|
| 33 |
// is there JS we should simply remove |
| 34 |
$removableJS = apply_filters( 'autoptimize_filter_js_removables', '', $this->content ); |
| 35 |
if (!empty($removableJS)) { |
| 36 |
$this->jsremovables = array_filter(array_map('trim',explode(",",$removableJS))); |
| 37 |
} |
| 38 |
|
| 39 |
// only header? |
| 40 |
if( apply_filters('autoptimize_filter_js_justhead', $options['justhead']) == true ) { |
| 41 |
$content = explode('</head>',$this->content,2); |
| 42 |
$this->content = $content[0].'</head>'; |
| 43 |
$this->restofcontent = $content[1]; |
| 44 |
} |
| 45 |
|
| 46 |
// include inline? |
| 47 |
if( apply_filters('autoptimize_js_include_inline', $options['include_inline']) == true ) { |
| 48 |
$this->include_inline = true; |
| 49 |
} |
| 50 |
|
| 51 |
// filter to "late inject minified JS", default to true for now (it is faster) |
| 52 |
$this->inject_min_late = apply_filters('autoptimize_filter_js_inject_min_late',true); |
| 53 |
|
| 54 |
// filters to override hardcoded do(nt)move(last) array contents (array in, array out!) |
| 55 |
$this->dontmove = apply_filters( 'autoptimize_filter_js_dontmove', $this->dontmove ); |
| 56 |
$this->domovelast = apply_filters( 'autoptimize_filter_js_movelast', $this->domovelast ); |
| 57 |
$this->domove = apply_filters( 'autoptimize_filter_js_domove', $this->domove ); |
| 58 |
|
| 59 |
// get extra exclusions settings or filter |
| 60 |
$excludeJS = $options['js_exclude']; |
| 61 |
$excludeJS = apply_filters( 'autoptimize_filter_js_exclude', $excludeJS, $this->content ); |
| 62 |
if ($excludeJS!=="") { |
| 63 |
if (is_array($excludeJS)) { |
| 64 |
if(($removeKeys = array_keys($excludeJS,"remove")) !== false) { |
| 65 |
foreach ($removeKeys as $removeKey) { |
| 66 |
unset($excludeJS[$removeKey]); |
| 67 |
$this->jsremovables[]=$removeKey; |
| 68 |
} |
| 69 |
} |
| 70 |
$exclJSArr = array_keys($excludeJS); |
| 71 |
} else { |
| 72 |
$exclJSArr = array_filter(array_map('trim',explode(",",$excludeJS))); |
| 73 |
} |
| 74 |
$this->dontmove = array_merge($exclJSArr,$this->dontmove); |
| 75 |
} |
| 76 |
|
| 77 |
//Should we add try-catch? |
| 78 |
if($options['trycatch'] == true) |
| 79 |
$this->trycatch = true; |
| 80 |
|
| 81 |
// force js in head? |
| 82 |
if($options['forcehead'] == true) { |
| 83 |
$this->forcehead = true; |
| 84 |
} else { |
| 85 |
$this->forcehead = false; |
| 86 |
} |
| 87 |
$this->forcehead = apply_filters( 'autoptimize_filter_js_forcehead', $this->forcehead ); |
| 88 |
|
| 89 |
// get cdn url |
| 90 |
$this->cdn_url = $options['cdn_url']; |
| 91 |
|
| 92 |
// noptimize me |
| 93 |
$this->content = $this->hide_noptimize($this->content); |
| 94 |
|
| 95 |
// Save IE hacks |
| 96 |
$this->content = $this->hide_iehacks($this->content); |
| 97 |
|
| 98 |
// comments |
| 99 |
$this->content = $this->hide_comments($this->content); |
| 100 |
|
| 101 |
// Get script files |
| 102 |
if (preg_match_all('#<script.*</script>#Usmi',$this->content,$matches)) { |
| 103 |
foreach($matches[0] as $tag) { |
| 104 |
// only consider script aggregation for types whitelisted in should_aggregate-function |
| 105 |
if( !$this->should_aggregate($tag) ) { |
| 106 |
$tag=''; |
| 107 |
continue; |
| 108 |
} |
| 109 |
|
| 110 |
if (preg_match('#<script[^>]*src=("|\')([^>]*)("|\')#Usmi',$tag,$source)) { |
| 111 |
// non-inline script |
| 112 |
if ($this->isremovable($tag,$this->jsremovables)) { |
| 113 |
$this->content = str_replace($tag,'',$this->content); |
| 114 |
continue; |
| 115 |
} |
| 116 |
$explUrl = explode('?',$source[2],2); |
| 117 |
$url = $explUrl[0]; |
| 118 |
$path = $this->getpath($url); |
| 119 |
if($path !== false && preg_match('#\.js$#',$path) && $this->ismergeable($tag)) { |
| 120 |
// ok to optimize, add to array |
| 121 |
$this->scripts[] = $path; |
| 122 |
} else { |
| 123 |
$origTag = $tag; |
| 124 |
$newTag = $tag; |
| 125 |
|
| 126 |
// non-mergeable script (excluded or dynamic or external) |
| 127 |
if (is_array($excludeJS)) { |
| 128 |
// should we add flags? |
| 129 |
foreach ($excludeJS as $exclTag => $exclFlags) { |
| 130 |
if ( strpos($origTag,$exclTag)!==false && in_array($exclFlags,array("async","defer")) ) { |
| 131 |
$newTag = str_replace('<script ','<script '.$exclFlags.' ',$newTag); |
| 132 |
} |
| 133 |
} |
| 134 |
} |
| 135 |
|
| 136 |
// should we minify the non-aggregated script? |
| 137 |
if ($path && apply_filters('autoptimize_filter_js_minify_excluded',false)) { |
| 138 |
$_CachedMinifiedUrl = $this->minify_single($path); |
| 139 |
|
| 140 |
// replace orig URL with minified URL from cache if so |
| 141 |
if (!empty($_CachedMinifiedUrl)) { |
| 142 |
$newTag = str_replace($url, $_CachedMinifiedUrl, $newTag); |
| 143 |
} |
| 144 |
|
| 145 |
// remove querystring from URL in newTag |
| 146 |
if ( !empty($explUrl[1]) ) { |
| 147 |
$newTag = str_replace("?".$explUrl[1],"",$newTag); |
| 148 |
} |
| 149 |
} |
| 150 |
|
| 151 |
// should we move the non-aggregated script? |
| 152 |
if( $this->ismovable($newTag) ) { |
| 153 |
// can be moved, flags and all |
| 154 |
if( $this->movetolast($newTag) ) { |
| 155 |
$this->move['last'][] = $newTag; |
| 156 |
} else { |
| 157 |
$this->move['first'][] = $newTag; |
| 158 |
} |
| 159 |
} else { |
| 160 |
// cannot be moved, so if flag was added re-inject altered tag immediately |
| 161 |
if ( $origTag !== $newTag ) { |
| 162 |
$this->content = str_replace($origTag,$newTag,$this->content); |
| 163 |
$origTag = ''; |
| 164 |
} |
| 165 |
// and forget about the $tag (not to be touched any more) |
| 166 |
$tag = ''; |
| 167 |
} |
| 168 |
} |
| 169 |
} else { |
| 170 |
// Inline script |
| 171 |
if ($this->isremovable($tag,$this->jsremovables)) { |
| 172 |
$this->content = str_replace($tag,'',$this->content); |
| 173 |
continue; |
| 174 |
} |
| 175 |
|
| 176 |
// unhide comments, as javascript may be wrapped in comment-tags for old times' sake |
| 177 |
$tag = $this->restore_comments($tag); |
| 178 |
if($this->ismergeable($tag) && ( $this->include_inline )) { |
| 179 |
preg_match('#<script.*>(.*)</script>#Usmi',$tag,$code); |
| 180 |
$code = preg_replace('#.*<!\[CDATA\[(?:\s*\*/)?(.*)(?://|/\*)\s*?\]\]>.*#sm','$1',$code[1]); |
| 181 |
$code = preg_replace('/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/','',$code); |
| 182 |
$this->scripts[] = 'INLINE;'.$code; |
| 183 |
} else { |
| 184 |
// Can we move this? |
| 185 |
$autoptimize_js_moveable = apply_filters( 'autoptimize_js_moveable', '', $tag ); |
| 186 |
if( $this->ismovable($tag) || $autoptimize_js_moveable !== '' ) { |
| 187 |
if( $this->movetolast($tag) || $autoptimize_js_moveable === 'last' ) { |
| 188 |
$this->move['last'][] = $tag; |
| 189 |
} else { |
| 190 |
$this->move['first'][] = $tag; |
| 191 |
} |
| 192 |
} else { |
| 193 |
//We shouldn't touch this |
| 194 |
$tag = ''; |
| 195 |
} |
| 196 |
} |
| 197 |
// re-hide comments to be able to do the removal based on tag from $this->content |
| 198 |
$tag = $this->hide_comments($tag); |
| 199 |
} |
| 200 |
|
| 201 |
//Remove the original script tag |
| 202 |
$this->content = str_replace($tag,'',$this->content); |
| 203 |
} |
| 204 |
|
| 205 |
return true; |
| 206 |
} |
| 207 |
|
| 208 |
// No script files, great ;-) |
| 209 |
return false; |
| 210 |
} |
| 211 |
|
| 212 |
//Joins and optimizes JS |
| 213 |
public function minify() { |
| 214 |
foreach($this->scripts as $script) { |
| 215 |
if(preg_match('#^INLINE;#',$script)) { |
| 216 |
//Inline script |
| 217 |
$script = preg_replace('#^INLINE;#','',$script); |
| 218 |
$script = rtrim( $script, ";\n\t\r" ) . ';'; |
| 219 |
//Add try-catch? |
| 220 |
if($this->trycatch) { |
| 221 |
$script = 'try{'.$script.'}catch(e){}'; |
| 222 |
} |
| 223 |
$tmpscript = apply_filters( 'autoptimize_js_individual_script', $script, '' ); |
| 224 |
if ( has_filter('autoptimize_js_individual_script') && !empty($tmpscript) ) { |
| 225 |
$script=$tmpscript; |
| 226 |
$this->alreadyminified=true; |
| 227 |
} |
| 228 |
$this->jscode .= "\n" . $script; |
| 229 |
} else { |
| 230 |
//External script |
| 231 |
if($script !== false && file_exists($script) && is_readable($script)) { |
| 232 |
$scriptsrc = file_get_contents($script); |
| 233 |
$scripthash = md5($scriptsrc); |
| 234 |
$scriptsrc = preg_replace('/\x{EF}\x{BB}\x{BF}/','',$scriptsrc); |
| 235 |
$scriptsrc = rtrim($scriptsrc,";\n\t\r").';'; |
| 236 |
|
| 237 |
//Add try-catch? |
| 238 |
if($this->trycatch) { |
| 239 |
$scriptsrc = 'try{'.$scriptsrc.'}catch(e){}'; |
| 240 |
} |
| 241 |
$tmpscriptsrc = apply_filters( 'autoptimize_js_individual_script', $scriptsrc, $script ); |
| 242 |
if ( has_filter('autoptimize_js_individual_script') && !empty($tmpscriptsrc) ) { |
| 243 |
$scriptsrc=$tmpscriptsrc; |
| 244 |
$this->alreadyminified=true; |
| 245 |
} else if ($this->can_inject_late($script)) { |
| 246 |
$scriptsrc="/*!%%INJECTLATER".AUTOPTIMIZE_HASH."%%".base64_encode($script)."|".$scripthash."%%INJECTLATER%%*/"; |
| 247 |
} |
| 248 |
$this->jscode .= "\n".$scriptsrc; |
| 249 |
}/*else{ |
| 250 |
//Couldn't read JS. Maybe getpath isn't working? |
| 251 |
}*/ |
| 252 |
} |
| 253 |
} |
| 254 |
|
| 255 |
//Check for already-minified code |
| 256 |
$this->md5hash = md5($this->jscode); |
| 257 |
$ccheck = new autoptimizeCache($this->md5hash,'js'); |
| 258 |
if($ccheck->check()) { |
| 259 |
$this->jscode = $ccheck->retrieve(); |
| 260 |
return true; |
| 261 |
} |
| 262 |
unset($ccheck); |
| 263 |
|
| 264 |
//$this->jscode has all the uncompressed code now. |
| 265 |
if ($this->alreadyminified!==true) { |
| 266 |
if (class_exists('JSMin') && apply_filters( 'autoptimize_js_do_minify' , true)) { |
| 267 |
if (@is_callable(array("JSMin","minify"))) { |
| 268 |
$tmp_jscode = trim(JSMin::minify($this->jscode)); |
| 269 |
if (!empty($tmp_jscode)) { |
| 270 |
$this->jscode = $tmp_jscode; |
| 271 |
unset($tmp_jscode); |
| 272 |
} |
| 273 |
$this->jscode = $this->inject_minified($this->jscode); |
| 274 |
$this->jscode = apply_filters( 'autoptimize_js_after_minify', $this->jscode ); |
| 275 |
return true; |
| 276 |
} else { |
| 277 |
$this->jscode = $this->inject_minified($this->jscode); |
| 278 |
return false; |
| 279 |
} |
| 280 |
} else { |
| 281 |
$this->jscode = $this->inject_minified($this->jscode); |
| 282 |
return false; |
| 283 |
} |
| 284 |
} |
| 285 |
$this->jscode = apply_filters( 'autoptimize_js_after_minify', $this->jscode ); |
| 286 |
return true; |
| 287 |
} |
| 288 |
|
| 289 |
//Caches the JS in uncompressed, deflated and gzipped form. |
| 290 |
public function cache() { |
| 291 |
$cache = new autoptimizeCache($this->md5hash,'js'); |
| 292 |
if(!$cache->check()) { |
| 293 |
//Cache our code |
| 294 |
$cache->cache($this->jscode,'text/javascript'); |
| 295 |
} |
| 296 |
$this->url = AUTOPTIMIZE_CACHE_URL.$cache->getname(); |
| 297 |
$this->url = $this->url_replace_cdn($this->url); |
| 298 |
} |
| 299 |
|
| 300 |
// Returns the content |
| 301 |
public function getcontent() { |
| 302 |
// Restore the full content |
| 303 |
if(!empty($this->restofcontent)) { |
| 304 |
$this->content .= $this->restofcontent; |
| 305 |
$this->restofcontent = ''; |
| 306 |
} |
| 307 |
|
| 308 |
// Add the scripts taking forcehead/ deferred (default) into account |
| 309 |
if($this->forcehead == true) { |
| 310 |
$replaceTag=array("</head>","before"); |
| 311 |
$defer=""; |
| 312 |
} else { |
| 313 |
$replaceTag=array("</body>","before"); |
| 314 |
$defer="defer "; |
| 315 |
} |
| 316 |
|
| 317 |
$defer = apply_filters( 'autoptimize_filter_js_defer', $defer ); |
| 318 |
$bodyreplacementpayload = '<script type="text/javascript" '.$defer.'src="'.$this->url.'"></script>'; |
| 319 |
$bodyreplacementpayload = apply_filters('autoptimize_filter_js_bodyreplacementpayload',$bodyreplacementpayload); |
| 320 |
|
| 321 |
$bodyreplacement = implode('',$this->move['first']); |
| 322 |
$bodyreplacement .= $bodyreplacementpayload; |
| 323 |
$bodyreplacement .= implode('',$this->move['last']); |
| 324 |
|
| 325 |
$replaceTag = apply_filters( 'autoptimize_filter_js_replacetag', $replaceTag ); |
| 326 |
|
| 327 |
if (strlen($this->jscode)>0) { |
| 328 |
$this->inject_in_html($bodyreplacement,$replaceTag); |
| 329 |
} |
| 330 |
|
| 331 |
// restore comments |
| 332 |
$this->content = $this->restore_comments($this->content); |
| 333 |
|
| 334 |
// Restore IE hacks |
| 335 |
$this->content = $this->restore_iehacks($this->content); |
| 336 |
|
| 337 |
// Restore noptimize |
| 338 |
$this->content = $this->restore_noptimize($this->content); |
| 339 |
|
| 340 |
// Return the modified HTML |
| 341 |
return $this->content; |
| 342 |
} |
| 343 |
|
| 344 |
// Checks against the white- and blacklists |
| 345 |
private function ismergeable($tag) { |
| 346 |
if (apply_filters('autoptimize_filter_js_dontaggregate',false)) { |
| 347 |
return false; |
| 348 |
} else if (!empty($this->whitelist)) { |
| 349 |
foreach ($this->whitelist as $match) { |
| 350 |
if(strpos($tag,$match)!==false) { |
| 351 |
return true; |
| 352 |
} |
| 353 |
} |
| 354 |
// no match with whitelist |
| 355 |
return false; |
| 356 |
} else { |
| 357 |
foreach($this->domove as $match) { |
| 358 |
if(strpos($tag,$match)!==false) { |
| 359 |
// Matched something |
| 360 |
return false; |
| 361 |
} |
| 362 |
} |
| 363 |
|
| 364 |
if ($this->movetolast($tag)) { |
| 365 |
return false; |
| 366 |
} |
| 367 |
|
| 368 |
foreach($this->dontmove as $match) { |
| 369 |
if(strpos($tag,$match)!==false) { |
| 370 |
//Matched something |
| 371 |
return false; |
| 372 |
} |
| 373 |
} |
| 374 |
|
| 375 |
// If we're here it's safe to merge |
| 376 |
return true; |
| 377 |
} |
| 378 |
} |
| 379 |
|
| 380 |
// Checks againstt the blacklist |
| 381 |
private function ismovable($tag) { |
| 382 |
if ($this->include_inline !== true || apply_filters('autoptimize_filter_js_unmovable',true)) { |
| 383 |
return false; |
| 384 |
} |
| 385 |
|
| 386 |
foreach($this->domove as $match) { |
| 387 |
if(strpos($tag,$match)!==false) { |
| 388 |
// Matched something |
| 389 |
return true; |
| 390 |
} |
| 391 |
} |
| 392 |
|
| 393 |
if ($this->movetolast($tag)) { |
| 394 |
return true; |
| 395 |
} |
| 396 |
|
| 397 |
foreach($this->dontmove as $match) { |
| 398 |
if(strpos($tag,$match)!==false) { |
| 399 |
// Matched something |
| 400 |
return false; |
| 401 |
} |
| 402 |
} |
| 403 |
|
| 404 |
// If we're here it's safe to move |
| 405 |
return true; |
| 406 |
} |
| 407 |
|
| 408 |
private function movetolast($tag) { |
| 409 |
foreach($this->domovelast as $match) { |
| 410 |
if(strpos($tag,$match)!==false) { |
| 411 |
// Matched, return true |
| 412 |
return true; |
| 413 |
} |
| 414 |
} |
| 415 |
|
| 416 |
// Should be in 'first' |
| 417 |
return false; |
| 418 |
} |
| 419 |
|
| 420 |
/** |
| 421 |
* Determines wheter a <script> $tag should be aggregated or not. |
| 422 |
* |
| 423 |
* We consider these as "aggregation-safe" currently: |
| 424 |
* - script tags without a `type` attribute |
| 425 |
* - script tags with an explicit `type` of `text/javascript`, 'text/ecmascript', |
| 426 |
* 'application/javascript' or 'application/ecmascript' |
| 427 |
* |
| 428 |
* Everything else should return false. |
| 429 |
* |
| 430 |
* @param string $tag |
| 431 |
* @return bool |
| 432 |
* |
| 433 |
* original function by https://github.com/zytzagoo/ on his AO fork, thanks Tomas! |
| 434 |
*/ |
| 435 |
public function should_aggregate($tag) { |
| 436 |
preg_match('#<(script[^>]*)>#i',$tag,$scripttag); |
| 437 |
if ( strpos($scripttag[1], 'type')===false ) { |
| 438 |
return true; |
| 439 |
} else if ( preg_match('/type\s*=\s*["\']?(?:text|application)\/(?:javascript|ecmascript)["\']?/i', $scripttag[1]) ) { |
| 440 |
return true; |
| 441 |
} else { |
| 442 |
return false; |
| 443 |
} |
| 444 |
} |
| 445 |
|
| 446 |
/** |
| 447 |
* Determines wheter a <script> $tag can be excluded from minification (as already minified) based on: |
| 448 |
* - inject_min_late being active |
| 449 |
* - filename ending in `min.js` |
| 450 |
* - filename matching `js/jquery/jquery.js` (wordpress core jquery, is minified) |
| 451 |
* - filename matching one passed in the consider minified filter |
| 452 |
* |
| 453 |
* @param string $jsPath |
| 454 |
* @return bool |
| 455 |
*/ |
| 456 |
private function can_inject_late($jsPath) { |
| 457 |
$consider_minified_array = apply_filters('autoptimize_filter_js_consider_minified',false); |
| 458 |
if ( $this->inject_min_late !== true ) { |
| 459 |
// late-inject turned off |
| 460 |
return false; |
| 461 |
} else if ( (strpos($jsPath,"min.js") === false) && ( strpos($jsPath,"wp-includes/js/jquery/jquery.js") === false ) && ( str_replace($consider_minified_array, '', $jsPath) === $jsPath ) ) { |
| 462 |
// file not minified based on filename & filter |
| 463 |
return false; |
| 464 |
} else { |
| 465 |
// phew, all is safe, we can late-inject |
| 466 |
return true; |
| 467 |
} |
| 468 |
} |
| 469 |
} |
| 470 |
|
