array(), 'footer' => array() ); protected $mTimes = array( 'header' => array(), 'footer' => array() ); protected $jsMin = 'JSMin'; protected $cssMin = 'CssMin'; /** * Constructor of the class */ public function __construct() { //Init assetic's object to manage js minify $this->js = new AssetFactory( getcwd() ); $this->js->setAssetManager( new AssetManager ); $this->js->setFilterManager( new FilterManager ); //Init assetic's object to manage css minify $this->css = new AssetFactory( getcwd() ); $this->css->setAssetManager( new AssetManager ); $this->css->setFilterManager( new FilterManager ); //Defines filter for js minify $this->js->getFilterManager()->set($this->jsMin, new JSMinFilter); $this->jsFilters []= $this->jsMin; //Defines filter for css minify $this->css->getFilterManager()->set($this->cssMin, new CssMinFilter); $this->css->getFilterManager()->set('CssRewrite', new CssRewriteFilter); $this->cssFilters []= $this->cssMin; //Define assets path to save asseticized files $uploadsDir = wp_upload_dir(); $this->assetsUrl = $uploadsDir['baseurl'] . '/am_assets/'; $this->assetsPath = $uploadsDir['basedir'] . '/am_assets/'; if ( !is_dir($this->assetsPath) ) //Creates the AM cache dir mkdir($this->assetsPath, 0777); elseif ( get_option('am_last_gc', 0) <= time() - 864000 ) //Every 10 days the garbage collector is called $this->gc(); //Manager for Filesystem management $this->cache = new FilesystemCache( $this->assetsPath ); //Detects all js and css added to WordPress and removes their inclusion add_action( 'wp_print_styles', array( $this, 'extractStyles' ) ); add_action( 'wp_print_scripts', array( $this, 'extractScripts' ) ); //Inclusion of scripts in and before add_action( 'wp_head', array( $this, 'headerServe' ) ); add_action( 'wp_footer', array( $this, 'footerServe' ) ); } /** * Garbage collector for 10 days old files */ public function gc() { update_option( 'am_last_gc', time() ); foreach ( glob("{$this->assetsPath}*.*") as $filepath ) if ( filemtime($filepath) <= time() - 864000 ) //If the file is older than 10 days then is removed unlink($filepath); } /** * Cleans the path of the site from the filepath */ public function cleanPath( $filepath ) { return str_replace( get_site_url(), "", $filepath ); } /** * Takes all the scripts enqueued to the theme and removes them from the queue */ public function extractScripts() { global $wp_scripts; if ( empty($wp_scripts->queue) ) return; // Trigger dependency resolution $wp_scripts->all_deps($wp_scripts->queue); foreach( $wp_scripts->to_do as $key => $handle ) { //Removes absolute part of the path if it's specified in the src $script = $this->cleanPath($wp_scripts->registered[$handle]->src); $script = str_replace( "/wp-includes/", str_replace( getcwd(), '', ABSPATH ) . "wp-includes/", $script ); //Doesn't manage other domains included scripts if ( strpos($script, "http") === 0 || strpos($script, "//") === 0 ) continue; $where = 'footer'; //Unfortunately not every WP plugin developer is a JS ninja //So... let's put it in the header. if ( empty($wp_scripts->registered[$handle]->extra) ) $where = 'header'; //Saves the source filename for every script enqueued $filepath = getcwd() . $script; if ( empty($script) || !is_file($filepath) ) continue; $this->scripts[ $where ][ $handle ] = $filepath; $this->mTimes[ $where ][ $handle ] = filemtime( $this->scripts[ $where ][ $handle ] ); //Removes scripts from the queue so this plugin will be //responsible to include all the scripts except other domains ones. $wp_scripts->dequeue( $handle ); //Move the handle to the done array. $wp_scripts->done[] = $handle; unset($wp_scripts->to_do[$key]); } } /** * Takes all the stylesheets enqueued to the theme and removes them from the queue */ public function extractStyles() { global $wp_styles; if ( empty($wp_styles->queue) ) return; // Trigger dependency resolution $wp_styles->all_deps($wp_styles->queue); foreach( $wp_styles->to_do as $key => $handle ) { //Removes absolute part of the path if it's specified in the src $style = $this->cleanPath($wp_styles->registered[$handle]->src); //Doesn't manage other domains included stylesheets if ( strpos($style, "http") === 0 || strpos($style, "//") === 0 ) continue; //Separation between css-frameworks stylesheets and .css stylesheets $ext = substr( $style, -5 ); if ( in_array( $ext, array('.sass', '.scss') ) ) { $filepath = getcwd() . $style; if ( !file_exists($filepath) ) continue; $this->sass[ $handle ] = $filepath; $this->mTimesSass[ $handle ] = filemtime($this->sass[ $handle ]); } elseif ( $ext == '.less' ) { $filepath = getcwd() . $style; if ( !file_exists($filepath) ) continue; $this->less[ $handle ] = $filepath; $this->mTimesLess[ $handle ] = filemtime($this->less[ $handle ]); } else { $filepath = getcwd() . $style; if ( !file_exists($filepath) ) continue; $this->styles[ $handle ] = $filepath; $this->mTimesStyles[ $handle ] = filemtime($this->styles[ $handle ]); } //Removes css from the queue so this plugin will be //responsible to include all the stylesheets except other domains ones. $wp_styles->dequeue( $handle ); //Move the handle to the done array. $wp_styles->done[] = $handle; unset($wp_styles->to_do[$key]); } } /** * Returns header's inclusion for CSS and JS (if provided) */ public function headerServe() { //Compiles CSS stylesheets $this->generateCss(); //Compiles SASS stylesheets $this->generateSass(); //Compiles LESS stylesheets $this->generateLess(); //Manages the stylesheets if ( !empty($this->styles) ) { $mtime = md5(implode('&', $this->mTimesStyles)); //Saves the asseticized stylesheets if ( !$this->cache->has( "head-{$mtime}.css" ) ) $this->cache->set( "head-{$mtime}.css", str_replace('../', '/', $this->css->createAsset( $this->styles, $this->cssFilters )->dump() ) ); //Prints css inclusion in the page $this->dumpCss( "head-{$mtime}.css" ); } //Manages the scripts to be printed in the header $this->headerServeScripts(); } /** * Takes all the SASS stylesheets and manages their queue to asseticize them */ public function generateSass() { if ( empty($this->sass) ) return false; $mtime = md5(implode('&', $this->mTimesSass)); //If SASS stylesheets have been updated -> compass compile if ( !$this->cache->has( "sass-{$mtime}.css" ) ) { if ( get_option('am_use_compass', 0) != 0 ) { //Defines compass filter instance and sprite images paths $compassInstance = new CompassFilter( get_option('am_compass_path', '/usr/bin/compass') ); $compassInstance->setImagesDir(get_theme_root() . "/" . get_template() . "/images"); $compassInstance->setGeneratedImagesPath( $this->assetsPath ); $compassInstance->setHttpGeneratedImagesPath( str_replace( getcwd(), '', $this->assetsPath ) ); $this->css->getFilterManager()->set('Compass', $compassInstance); $filter = 'Compass'; } else { $this->css->getFilterManager()->set('Scssphp', new ScssphpFilter); $filter = 'Scssphp'; } //Saves the asseticized stylesheets $this->cache->set( "sass-{$mtime}.css", $this->css->createAsset( $this->sass, array( $filter, 'CssRewrite' ) )->dump() ); } //Adds SASS compiled stylesheet to normal css queue $this->styles['sass-am-generated'] = $this->assetsPath . "sass-{$mtime}.css"; $this->mTimesStyles['sass-am-generated'] = filemtime($this->styles['sass-am-generated']); } /** * Takes all the LESS stylesheets and manages their queue to asseticize them */ public function generateLess() { if ( empty($this->less) ) return false; $mtime = md5(implode('&', $this->mTimesLess)); //If LESS stylesheets have been updated compile them if ( !$this->cache->has( "less-{$mtime}.css" ) ) { //Defines compass filter instance and sprite images paths $this->css->getFilterManager()->set('Lessphp', new LessphpFilter); //Saves the asseticized stylesheets $this->cache->set( "less-{$mtime}.css", $this->css->createAsset( $this->less, array( 'Lessphp', 'CssRewrite' ) )->dump() ); } //Adds LESS compiled stylesheet to normal css queue $this->styles['less-am-generated'] = $this->assetsPath . "less-{$mtime}.css"; $this->mTimesStyles['less-am-generated'] = filemtime($this->styles['less-am-generated']); } /** * Takes all the CSS stylesheets and manages their queue to asseticize them */ public function generateCss() { if ( empty($this->styles) ) return false; $mtime = md5(implode('&', $this->mTimesStyles)); //If CSS stylesheets have been updated compile and save them if ( !$this->cache->has( "styles-{$mtime}.css" ) ) $this->cache->set( "styles-{$mtime}.css", $this->css->createAsset( $this->styles, array( 'CssRewrite' ) )->dump() ); //Adds CSS compiled stylesheet to normal css queue $this->styles = array( 'styles-am-generated' => $this->assetsPath . "styles-{$mtime}.css"); $this->mTimesStyles = array( 'styles-am-generated' => filemtime($this->styles['styles-am-generated']) ); } /** * Returns header's inclusion for JS (if provided) */ public function headerServeScripts() { if ( empty($this->scripts['header']) ) return false; $mtime = md5(implode('&', $this->mTimes['header'])); //Saves the asseticized header scripts if ( !$this->cache->has( "head-{$mtime}.js" ) ) $this->cache->set( "head-{$mtime}.js", $this->js->createAsset( $this->scripts['header'], $this->jsFilters )->dump() ); //Prints "; } /** * Prints tag to include the CSS */ protected function dumpCss( $filename ) { echo ""; } /** * Prints \n"; } } new AssetsMinifyInit;