| 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; |
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private $jscode = ''; |
| 14 |
private $url = ''; |
| 15 |
private $move = array('first' => array(), 'last' => array()); |
| 16 |
private $restofcontent = ''; |
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private $md5hash = ''; |
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private $whitelist = ''; |
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private $jsremovables = array(); |
| 20 |
private $inject_min_late = ''; |
| 21 |
|
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//Reads the page and collects script tags |
| 23 |
public function read($options) { |
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$noptimizeJS = apply_filters( 'autoptimize_filter_js_noptimize', false, $this->content ); |
| 25 |
if ($noptimizeJS) return false; |
| 26 |
|
| 27 |
// only optimize known good JS? |
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$whitelistJS = apply_filters( 'autoptimize_filter_js_whitelist', "" ); |
| 29 |
if (!empty($whitelistJS)) { |
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$this->whitelist = array_filter(array_map('trim',explode(",",$whitelistJS))); |
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} |
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|
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// is there JS we should simply remove |
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$removableJS = apply_filters( 'autoptimize_filter_js_removables', ''); |
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if (!empty($removableJS)) { |
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$this->jsremovables = array_filter(array_map('trim',explode(",",$removableJS))); |
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} |
| 38 |
|
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// only header? |
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if( apply_filters('autoptimize_filter_js_justhead',$options['justhead']) == true ) { |
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$content = explode('</head>',$this->content,2); |
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$this->content = $content[0].'</head>'; |
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$this->restofcontent = $content[1]; |
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} |
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|
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// include inline? |
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if( apply_filters('autoptimize_js_include_inline',$options['include_inline']) == true ) { |
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$this->include_inline = true; |
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} |
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|
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// filter to "late inject minified JS", default to true for now (it is faster) |
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$this->inject_min_late = apply_filters('autoptimize_filter_js_inject_min_late',true); |
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|
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// filters to override hardcoded do(nt)move(last) array contents (array in, array out!) |
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$this->dontmove = apply_filters( 'autoptimize_filter_js_dontmove', $this->dontmove ); |
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$this->domovelast = apply_filters( 'autoptimize_filter_js_movelast', $this->domovelast ); |
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$this->domove = apply_filters( 'autoptimize_filter_js_domove', $this->domove ); |
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|
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// get extra exclusions settings or filter |
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$excludeJS = $options['js_exclude']; |
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$excludeJS = apply_filters( 'autoptimize_filter_js_exclude', $excludeJS ); |
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if ($excludeJS!=="") { |
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$exclJSArr = array_filter(array_map('trim',explode(",",$excludeJS))); |
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$this->dontmove = array_merge($exclJSArr,$this->dontmove); |
| 65 |
} |
| 66 |
|
| 67 |
//Should we add try-catch? |
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if($options['trycatch'] == true) |
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$this->trycatch = true; |
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|
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// force js in head? |
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if($options['forcehead'] == true) { |
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$this->forcehead = true; |
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} else { |
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$this->forcehead = false; |
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} |
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$this->forcehead = apply_filters( 'autoptimize_filter_js_forcehead', $this->forcehead ); |
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|
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// get cdn url |
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$this->cdn_url = $options['cdn_url']; |
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|
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// noptimize me |
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$this->content = $this->hide_noptimize($this->content); |
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|
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// Save IE hacks |
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$this->content = $this->hide_iehacks($this->content); |
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|
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// comments |
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$this->content = $this->hide_comments($this->content); |
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|
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//Get script files |
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if(preg_match_all('#<script.*</script>#Usmi',$this->content,$matches)) { |
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foreach($matches[0] as $tag) { |
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// only consider aggregation whitelisted in should_aggregate-function |
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if( !$this->should_aggregate($tag) ) { |
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$tag=''; |
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continue; |
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} |
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if(preg_match('#<script[^>]*src=("|\')([^>]*)("|\')#Usmi',$tag,$source)) { |
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if ($this->isremovable($tag,$this->jsremovables)) { |
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$this->content = str_replace($tag,'',$this->content); |
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continue; |
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} |
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|
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// External script |
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$url = current(explode('?',$source[2],2)); |
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$path = $this->getpath($url); |
| 108 |
if($path !== false && preg_match('#\.js$#',$path)) { |
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//Inline |
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if($this->ismergeable($tag)) { |
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//We can merge it |
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$this->scripts[] = $path; |
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} else { |
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//No merge, but maybe we can move it |
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if($this->ismovable($tag)) { |
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//Yeah, move it |
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if($this->movetolast($tag)) { |
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$this->move['last'][] = $tag; |
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} else { |
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$this->move['first'][] = $tag; |
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} |
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} else { |
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//We shouldn't touch this |
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$tag = ''; |
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} |
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} |
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} else { |
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//External script (example: google analytics) |
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//OR Script is dynamic (.php etc) |
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if($this->ismovable($tag)) { |
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if($this->movetolast($tag)) { |
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$this->move['last'][] = $tag; |
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} else { |
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$this->move['first'][] = $tag; |
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} |
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} else { |
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//We shouldn't touch this |
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$tag = ''; |
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} |
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} |
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} else { |
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// Inline script |
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if ($this->isremovable($tag,$this->jsremovables)) { |
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$this->content = str_replace($tag,'',$this->content); |
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continue; |
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} |
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|
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// unhide comments, as javascript may be wrapped in comment-tags for old times' sake |
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$tag = $this->restore_comments($tag); |
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if($this->ismergeable($tag) && ( $this->include_inline )) { |
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preg_match('#<script.*>(.*)</script>#Usmi',$tag,$code); |
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$code = preg_replace('#.*<!\[CDATA\[(?:\s*\*/)?(.*)(?://|/\*)\s*?\]\]>.*#sm','$1',$code[1]); |
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$code = preg_replace('/(?:^\\s*<!--\\s*|\\s*(?:\\/\\/)?\\s*-->\\s*$)/','',$code); |
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$this->scripts[] = 'INLINE;'.$code; |
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} else { |
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// Can we move this? |
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if($this->ismovable($tag)) { |
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if($this->movetolast($tag)) { |
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$this->move['last'][] = $tag; |
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} else { |
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$this->move['first'][] = $tag; |
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} |
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} else { |
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//We shouldn't touch this |
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$tag = ''; |
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} |
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} |
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// re-hide comments to be able to do the removal based on tag from $this->content |
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$tag = $this->hide_comments($tag); |
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} |
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|
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//Remove the original script tag |
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$this->content = str_replace($tag,'',$this->content); |
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} |
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|
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return true; |
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} |
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|
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// No script files, great ;-) |
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return false; |
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} |
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|
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//Joins and optimizes JS |
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public function minify() { |
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foreach($this->scripts as $script) { |
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if(preg_match('#^INLINE;#',$script)) { |
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//Inline script |
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$script = preg_replace('#^INLINE;#','',$script); |
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$script = rtrim( $script, ";\n\t\r" ) . ';'; |
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//Add try-catch? |
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if($this->trycatch) { |
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$script = 'try{'.$script.'}catch(e){}'; |
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} |
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$tmpscript = apply_filters( 'autoptimize_js_individual_script', $script, "" ); |
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if ( has_filter('autoptimize_js_individual_script') && !empty($tmpscript) ) { |
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$script=$tmpscript; |
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$this->alreadyminified=true; |
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} |
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$this->jscode .= "\n" . $script; |
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} else { |
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//External script |
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if($script !== false && file_exists($script) && is_readable($script)) { |
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$scriptsrc = file_get_contents($script); |
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$scriptsrc = preg_replace('/\x{EF}\x{BB}\x{BF}/','',$scriptsrc); |
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$scriptsrc = rtrim($scriptsrc,";\n\t\r").';'; |
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//Add try-catch? |
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if($this->trycatch) { |
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$scriptsrc = 'try{'.$scriptsrc.'}catch(e){}'; |
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} |
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$tmpscriptsrc = apply_filters( 'autoptimize_js_individual_script', $scriptsrc, $script ); |
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if ( has_filter('autoptimize_js_individual_script') && !empty($tmpscriptsrc) ) { |
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$scriptsrc=$tmpscriptsrc; |
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$this->alreadyminified=true; |
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} else if ((( strpos($script,"min.js") !== false ) || ( strpos($script,"wp-includes/js/jquery/jquery.js") !== false )) && ( $this->inject_min_late === true )) { |
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$scriptsrc="%%INJECTLATER".AUTOPTIMIZE_HASH."%%".base64_encode($script)."|".md5($scriptsrc)."%%INJECTLATER%%"; |
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} |
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$this->jscode .= "\n".$scriptsrc; |
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}/*else{ |
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//Couldn't read JS. Maybe getpath isn't working? |
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}*/ |
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} |
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} |
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|
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//Check for already-minified code |
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$this->md5hash = md5($this->jscode); |
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$ccheck = new autoptimizeCache($this->md5hash,'js'); |
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if($ccheck->check()) { |
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$this->jscode = $ccheck->retrieve(); |
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return true; |
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} |
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unset($ccheck); |
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|
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//$this->jscode has all the uncompressed code now. |
| 234 |
if ($this->alreadyminified!==true) { |
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if (class_exists('JSMin') && apply_filters( 'autoptimize_js_do_minify' , true)) { |
| 236 |
if (@is_callable(array("JSMin","minify"))) { |
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$tmp_jscode = trim(JSMin::minify($this->jscode)); |
| 238 |
if (!empty($tmp_jscode)) { |
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$this->jscode = $tmp_jscode; |
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unset($tmp_jscode); |
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} |
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$this->jscode = $this->inject_minified($this->jscode); |
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$this->jscode = apply_filters( 'autoptimize_js_after_minify', $this->jscode ); |
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return true; |
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} else { |
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$this->jscode = $this->inject_minified($this->jscode); |
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return false; |
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} |
| 249 |
} else { |
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$this->jscode = $this->inject_minified($this->jscode); |
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return false; |
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} |
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} |
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return true; |
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} |
| 256 |
|
| 257 |
//Caches the JS in uncompressed, deflated and gzipped form. |
| 258 |
public function cache() { |
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$cache = new autoptimizeCache($this->md5hash,'js'); |
| 260 |
if(!$cache->check()) { |
| 261 |
//Cache our code |
| 262 |
$cache->cache($this->jscode,'text/javascript'); |
| 263 |
} |
| 264 |
$this->url = AUTOPTIMIZE_CACHE_URL.$cache->getname(); |
| 265 |
$this->url = $this->url_replace_cdn($this->url); |
| 266 |
} |
| 267 |
|
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// Returns the content |
| 269 |
public function getcontent() { |
| 270 |
// Restore the full content |
| 271 |
if(!empty($this->restofcontent)) { |
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$this->content .= $this->restofcontent; |
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$this->restofcontent = ''; |
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} |
| 275 |
|
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// Add the scripts taking forcehead/ deferred (default) into account |
| 277 |
if($this->forcehead == true) { |
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$replaceTag=array("</head>","before"); |
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$defer=""; |
| 280 |
} else { |
| 281 |
$replaceTag=array("</body>","before"); |
| 282 |
$defer="defer "; |
| 283 |
} |
| 284 |
|
| 285 |
$defer = apply_filters( 'autoptimize_filter_js_defer', $defer ); |
| 286 |
$bodyreplacementpayload = '<script type="text/javascript" '.$defer.'src="'.$this->url.'"></script>'; |
| 287 |
$bodyreplacementpayload = apply_filters('autoptimize_filter_js_bodyreplacementpayload',$bodyreplacementpayload); |
| 288 |
|
| 289 |
$bodyreplacement = implode('',$this->move['first']); |
| 290 |
$bodyreplacement .= $bodyreplacementpayload; |
| 291 |
$bodyreplacement .= implode('',$this->move['last']); |
| 292 |
|
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$replaceTag = apply_filters( 'autoptimize_filter_js_replacetag', $replaceTag ); |
| 294 |
|
| 295 |
if (strlen($this->jscode)>0) { |
| 296 |
$this->inject_in_html($bodyreplacement,$replaceTag); |
| 297 |
} |
| 298 |
|
| 299 |
// restore comments |
| 300 |
$this->content = $this->restore_comments($this->content); |
| 301 |
|
| 302 |
// Restore IE hacks |
| 303 |
$this->content = $this->restore_iehacks($this->content); |
| 304 |
|
| 305 |
// Restore noptimize |
| 306 |
$this->content = $this->restore_noptimize($this->content); |
| 307 |
|
| 308 |
// Return the modified HTML |
| 309 |
return $this->content; |
| 310 |
} |
| 311 |
|
| 312 |
// Checks against the white- and blacklists |
| 313 |
private function ismergeable($tag) { |
| 314 |
if (!empty($this->whitelist)) { |
| 315 |
foreach ($this->whitelist as $match) { |
| 316 |
if(strpos($tag,$match)!==false) { |
| 317 |
return true; |
| 318 |
} |
| 319 |
} |
| 320 |
// no match with whitelist |
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return false; |
| 322 |
} else { |
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foreach($this->domove as $match) { |
| 324 |
if(strpos($tag,$match)!==false) { |
| 325 |
// Matched something |
| 326 |
return false; |
| 327 |
} |
| 328 |
} |
| 329 |
|
| 330 |
if ($this->movetolast($tag)) { |
| 331 |
return false; |
| 332 |
} |
| 333 |
|
| 334 |
foreach($this->dontmove as $match) { |
| 335 |
if(strpos($tag,$match)!==false) { |
| 336 |
//Matched something |
| 337 |
return false; |
| 338 |
} |
| 339 |
} |
| 340 |
|
| 341 |
// If we're here it's safe to merge |
| 342 |
return true; |
| 343 |
} |
| 344 |
} |
| 345 |
|
| 346 |
// Checks againstt the blacklist |
| 347 |
private function ismovable($tag) { |
| 348 |
if ($this->include_inline !== true || apply_filters('autoptimize_filter_js_unmovable',true)) { |
| 349 |
return false; |
| 350 |
} |
| 351 |
|
| 352 |
foreach($this->domove as $match) { |
| 353 |
if(strpos($tag,$match)!==false) { |
| 354 |
// Matched something |
| 355 |
return true; |
| 356 |
} |
| 357 |
} |
| 358 |
|
| 359 |
if ($this->movetolast($tag)) { |
| 360 |
return true; |
| 361 |
} |
| 362 |
|
| 363 |
foreach($this->dontmove as $match) { |
| 364 |
if(strpos($tag,$match)!==false) { |
| 365 |
// Matched something |
| 366 |
return false; |
| 367 |
} |
| 368 |
} |
| 369 |
|
| 370 |
// If we're here it's safe to move |
| 371 |
return true; |
| 372 |
} |
| 373 |
|
| 374 |
private function movetolast($tag) { |
| 375 |
foreach($this->domovelast as $match) { |
| 376 |
if(strpos($tag,$match)!==false) { |
| 377 |
// Matched, return true |
| 378 |
return true; |
| 379 |
} |
| 380 |
} |
| 381 |
|
| 382 |
// Should be in 'first' |
| 383 |
return false; |
| 384 |
} |
| 385 |
|
| 386 |
/** |
| 387 |
* Determines wheter a <script> $tag should be aggregated or not. |
| 388 |
* |
| 389 |
* We consider these as "aggregation-safe" currently: |
| 390 |
* - script tags without a `type` attribute |
| 391 |
* - script tags with an explicit `type` of `text/javascript`, 'text/ecmascript', |
| 392 |
* 'application/javascript' or 'application/ecmascript' |
| 393 |
* |
| 394 |
* Everything else should return false. |
| 395 |
* |
| 396 |
* @param string $tag |
| 397 |
* @return bool |
| 398 |
* |
| 399 |
* original function by https://github.com/zytzagoo/ on his AO fork, thanks Tomas! |
| 400 |
*/ |
| 401 |
public function should_aggregate($tag) { |
| 402 |
preg_match('#<(script[^>]*)>#i',$tag,$scripttag); |
| 403 |
if ( strpos($scripttag[1], 'type')===false ) { |
| 404 |
return true; |
| 405 |
} else if ( preg_match('/type\s*=\s*["\']?(?:text|application)\/(?:javascript|ecmascript)["\']?/i', $scripttag[1]) ) { |
| 406 |
return true; |
| 407 |
} else { |
| 408 |
return false; |
| 409 |
} |
| 410 |
} |
| 411 |
} |
| 412 |
|
