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Support Static Caching
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‎Readme.md‎

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@@ -12,4 +12,8 @@ Add on for Statamic v3 to combine and minify all CSS and JS files found in the p
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Install by composer: `composer require thoughtco/statamic-minify`
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A new config file will be published, and you can modify the minification settings in `config/thoughtco/minify.php`.
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A new config file will be published, and you can modify the minification settings in `config/thoughtco/minify.php`.
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## Static Caching
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If you are using static caching, add `\Thoughtco\Minify\Replacers\MinifyReplacer::class` to your `statamic.static_caching.replacers` array.

‎src/Managers/MinifyManager.php‎

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<?php
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namespace Thoughtco\Minify\Managers;
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use Closure;
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use File;
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use MatthiasMullie\Minify;
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class MinifyManager
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{
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public function parse(string $response)
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{
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// if disabled by config
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$shouldMinify = config('thoughtco.minify.minify_enabled');
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// should minify is a closure
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if ($shouldMinify instanceof Closure) {
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if (! call_user_func($shouldMinify)) {
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return $response;
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}
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// its a class
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} else {
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if (class_exists($shouldMinify)) {
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if (! app()->make($shouldMinify)->handle()) {
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return $response;
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}
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}
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}
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// linkgroups as we match by media type
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$cssGroups = array();
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// link groups to remove
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$linkElements = array();
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$groupedLinkElements = array();
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// matches to remove
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$removeCSS = $removeCSSGroups = $removeJS = $removeJSGroups = array();
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$this->ignoreUrls = config('thoughtco.minify.ignore_urls', []);
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// are we minifying css ?
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if (in_array('css', config('thoughtco.minify.file_types', []))) {
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// match link[href]
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preg_match_all('/<link([^>]+)href="([^"]+)"([^>]*)>/i', $response, $linkMatches, PREG_OFFSET_CAPTURE);
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if (count($linkMatches) > 0){
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foreach ($linkMatches[0] as $i=>$match){
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// ignore if IE blocks
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if (stripos($match[0], 'rel="stylesheet') !== FALSE && preg_match('/IE([^>]*)>/i', substr($response, $match[1] - 6, 7)) !== 1) {
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preg_match('/media="([^"]+)"/i', $match[0], $mediaMatch);
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if (count($mediaMatch) > 1){
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if (strpos($linkMatches[2][$i][0], '//') === FALSE) {
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if ($this->shouldBeIgnored($linkMatches[2][$i][0])) {
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continue;
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}
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// no grouping
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if (strpos($linkMatches[0][$i][0], 'data-group') === FALSE) {
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$cssGroups[$mediaMatch[1]][] = $linkMatches[2][$i][0];
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$removeCSS[] = $match[0];
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// grouping
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} else {
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preg_match_all('/data-group="([^"]+)"/i', $linkMatches[0][$i][0], $groupMatch);
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// make an array
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if (!isset($cssGroups[$groupMatch[1][0]][$mediaMatch[1]])){
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$cssGroups[$groupMatch[1][0]][$mediaMatch[1]] = array();
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}
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$cssGroups[$groupMatch[1][0]][$mediaMatch[1]][] = $linkMatches[2][$i][0];
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$removeCSSGroups[$groupMatch[1][0]][] = $match[0];
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}
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}
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}
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}
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}
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}
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}
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// are we minifying js ?
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if (in_array('js', config('thoughtco.minify.file_types', []))) {
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// match script[src]
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preg_match_all('/<script([^>]+)src="([^"]+)"([^>]*)><\/script>/i', $response, $scriptMatches);
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if (count($scriptMatches) > 0) {
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foreach ($scriptMatches[0] as $i=>$match) {
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if (strpos($scriptMatches[2][$i], '//') === FALSE && strpos($scriptMatches[2][$i], '://') === FALSE) {
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if ($this->shouldBeIgnored($scriptMatches[2][$i])) {
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continue;
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}
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// no grouping
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if (strpos($scriptMatches[0][$i], 'data-group') === FALSE) {
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$linkElements[] = $scriptMatches[2][$i];
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$removeJS[] = $match;
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// grouping
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} else {
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preg_match_all('/data-group="([^"]+)"/i', $scriptMatches[0][$i], $groupMatch);
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$groupedLinkElements[$groupMatch[1][0]][] = $scriptMatches[2][$i];
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$removeJSGroups[$groupMatch[1][0]][] = $match;
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}
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}
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}
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}
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}
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// do we need to make min dir?
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$this->minPath = config('thoughtco.minify.min_path');
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$minPath = public_path($this->minPath);
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if (!File::isDirectory($minPath)){
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File::makeDirectory($minPath, $mode = 0777, true, true);
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}
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$replacementCSS = array();
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$replacementCSSGrouped = array();
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// loop over css groups
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foreach ($cssGroups as $media=>$files){
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// styles may be grouped
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$filesNoSubgroups = array();
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foreach ($files as $index=>$file){
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if (is_array($file)){
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$tag = $this->combineAndMinify($minPath, $file, 'css');
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if ($tag != ''){
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$replacementCSSGrouped[$media][] = '<link rel="stylesheet" type="text/css" href="'.$this->minPath.$tag['file'].'.css?'.$tag['version'].'" media="'.$index.'" />';
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}
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} else {
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$filesNoSubgroups[] = $file;
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}
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}
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// or not
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$tag = $this->combineAndMinify($minPath, $filesNoSubgroups, 'css');
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if ($tag != ''){
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$replacementCSS[] = '<link rel="stylesheet" type="text/css" href="'.$this->minPath.$tag['file'].'.css?'.$tag['version'].'" media="'.$media.'" />';
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}
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}
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// if we have css to replace
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if (count($replacementCSS) > 0){
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// no grouping
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if (count($removeCSS) > 0){
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$response = str_replace($removeCSS[0], implode("\n\t", $replacementCSS), $response);
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}
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// replace first instance of group with combined
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foreach ($removeCSSGroups as $index=>$group){
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$response = str_replace($group[0], implode("\n\t", $replacementCSSGrouped[$index]), $response);
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}
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}
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// loop over js
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if (count($linkElements) > 0){
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$tag = $this->combineAndMinify($minPath, $linkElements, 'js');
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if ($tag != ''){
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$response = str_replace($removeJS[0], '<script type="text/javascript" src="'.$this->minPath.$tag['file'].'.js?'.$tag['version'].'"></script>', $response);
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}
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}
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// loop over grouped js
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if (count($groupedLinkElements) > 0){
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foreach ($groupedLinkElements as $group=>$linkElements){
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$tag = $this->combineAndMinify($minPath, $linkElements, 'js');
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if ($tag != ''){
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$response = str_replace($removeJSGroups[$group][0], '<script type="text/javascript" src="'.$this->minPath.$tag['file'].'.js?'.$tag['version'].'"></script>', $response);
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}
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}
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}
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// remove everything
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foreach ($removeCSS as $el){
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$response = str_replace(array($el."\n", $el."\r", $el), '', $response);
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}
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foreach ($removeCSSGroups as $index=>$els){
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foreach ($els as $el){
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$response = str_replace(array($el."\n", $el."\r", $el), '', $response);
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}
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}
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foreach ($removeJS as $el){
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$response = str_replace(array($el."\n", $el."\r", $el), '', $response);
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}
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foreach ($removeJSGroups as $index=>$els){
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foreach ($els as $el){
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$response = str_replace(array($el."\n", $el."\r", $el), '', $response);
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}
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}
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return $response;
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}
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// combine and minify files
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protected function combineAndMinify($minPath, $aFiles, $type)
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{
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// get file last modified dates
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$aLastModifieds = array();
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foreach ($aFiles as $sFile){
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$aLastModifieds[] = File::lastModified(public_path($sFile));
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}
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if (count($aLastModifieds) < 1) return;
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// sort dates, newest first
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rsort($aLastModifieds);
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// get array of filenames
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$vals = array_values($aFiles);
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// alphabetic sort
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sort($vals);
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// create an md5 of the filenames
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$md5files = md5(implode('', $vals));
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// extension
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$extension = ($type == 'css' ? 'css' : 'js');
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// create a unique tag, last modified file
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$iETag = $md5files;
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// archive name
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$sMergedFilename = $minPath.'/'.$iETag.'.'.$extension;
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// we already have this archive
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if (File::exists($sMergedFilename)) {
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if (File::lastModified($sMergedFilename) >= $aLastModifieds[0]){
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return array('file' => $iETag, 'version' => $aLastModifieds[0]);
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}
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}
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// get merge code
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$sCode = '';
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$sCodeAfter = '';
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// type?
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if ($type == 'js'){
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$minifier = new Minify\JS();
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} else {
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$minifier = new Minify\CSS();
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}
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foreach ($aFiles as $sFile) {
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$minifier->add(public_path($sFile));
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}
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$sCode = $minifier->minify();
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// write file
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File::put($sMergedFilename, $sCode);
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// get time
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$time = File::lastModified($sMergedFilename);
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return array('file' => $iETag, 'version' => $time);
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}
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protected function shouldBeIgnored($url)
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{
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$ignore = false;
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foreach ($this->ignoreUrls as $ignoreUrl) {
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if (preg_match($ignoreUrl, $url)) {
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$ignore = true;
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}
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}
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return $ignore;
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}
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}

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