Minify CSS and JS
This commit is contained in:
KingOfDog
Marcel
parent
c07b714a0d
commit
f168cf6863
465
combine.php
465
combine.php
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@ -1,253 +1,256 @@
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<?php
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<?php
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$cache = true;
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$cache = true;
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$cachedir = dirname(__FILE__) . '/assets/cache';
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$cachedir = dirname(__FILE__) . '/assets/cache';
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$cssdir = dirname(__FILE__) . '/assets/css';
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$cssdir = dirname(__FILE__) . '/assets/css';
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$jsdir = dirname(__FILE__) . '/assets/js';
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$jsdir = dirname(__FILE__) . '/assets/js';
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// Determine the directory and type we should use
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// Determine the directory and type we should use
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switch ($_GET['type']) {
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switch ($_GET['type']) {
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case 'css':
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case 'css':
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$base = realpath($cssdir);
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$base = realpath($cssdir);
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break;
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break;
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case 'javascript':
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case 'javascript':
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$base = realpath($jsdir);
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$base = realpath($jsdir);
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break;
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break;
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default:
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default:
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header("HTTP/1.0 503 Not Implemented");
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header("HTTP/1.0 503 Not Implemented");
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exit;
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exit;
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};
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};
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$type = $_GET['type'];
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$type = $_GET['type'];
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$elements = explode(',', $_GET['files']);
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$elements = explode(',', $_GET['files']);
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// Determine last modification date of the files
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// Determine last modification date of the files
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$lastmodified = 0;
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$lastmodified = 0;
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while (list(, $element) = each($elements)) {
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$path = realpath($base . '/' . $element);
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if (($type == 'javascript' && substr($path, -3) != '.js') ||
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($type == 'css' && substr($path, -4) != '.css')) {
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header("HTTP/1.0 403 Forbidden");
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exit;
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}
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if (substr($path, 0, strlen($base)) != $base || !file_exists($path)) {
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header("HTTP/1.0 404 Not Found");
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exit;
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}
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$lastmodified = max($lastmodified, filemtime($path));
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}
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// Send Etag hash
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$hash = $lastmodified . '-' . md5($_GET['files']);
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header("Etag: \"" . $hash . "\"");
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if (isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
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stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == '"' . $hash . '"') {
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// Return visit and no modifications, so do not send anything
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header("HTTP/1.0 304 Not Modified");
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header('Content-Length: 0');
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} else {
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// First time visit or files were modified
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if ($cache) {
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// Determine supported compression method
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$gzip = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
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$deflate = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate');
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// Determine used compression method
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$encoding = $gzip ? 'gzip' : ($deflate ? 'deflate' : 'none');
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// Check for buggy versions of Internet Explorer
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if (!strstr($_SERVER['HTTP_USER_AGENT'], 'Opera') &&
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preg_match('/^Mozilla\/4\.0 \(compatible; MSIE ([0-9]\.[0-9])/i', $_SERVER['HTTP_USER_AGENT'], $matches)) {
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$version = floatval($matches[1]);
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if ($version < 6)
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$encoding = 'none';
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if ($version == 6 && !strstr($_SERVER['HTTP_USER_AGENT'], 'EV1'))
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$encoding = 'none';
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}
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// Try the cache first to see if the combined files were already generated
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$cachefile = 'cache-' . $hash . '.' . $type . ($encoding != 'none' ? '.' . $encoding : '');
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if (file_exists($cachedir . '/' . $cachefile)) {
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if ($fp = fopen($cachedir . '/' . $cachefile, 'rb')) {
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if ($encoding != 'none') {
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header("Content-Encoding: " . $encoding);
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}
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header("Content-Type: text/" . $type);
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header("Content-Length: " . filesize($cachedir . '/' . $cachefile));
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fpassthru($fp);
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fclose($fp);
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exit;
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}
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}
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}
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// Get contents of the files
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$contents = '';
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reset($elements);
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while (list(, $element) = each($elements)) {
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while (list(, $element) = each($elements)) {
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$path = realpath($base . '/' . $element);
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$path = realpath($base . '/' . $element);
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$contents .= "\n\n" . file_get_contents($path);
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// $contents = fn_minify_css($contents);
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if (($type == 'javascript' && substr($path, -3) != '.js') ||
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($type == 'css' && substr($path, -4) != '.css')) {
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header("HTTP/1.0 403 Forbidden");
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exit;
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}
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if (substr($path, 0, strlen($base)) != $base || !file_exists($path)) {
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header("HTTP/1.0 404 Not Found");
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exit;
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}
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$lastmodified = max($lastmodified, filemtime($path));
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}
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}
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// Send Content-Type
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// Send Etag hash
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header("Content-Type: text/" . $type);
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$hash = $lastmodified . '-' . md5($_GET['files']);
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header("Etag: \"" . $hash . "\"");
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if (isset($encoding) && $encoding != 'none') {
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if (isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
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// Send compressed contents
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stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == '"' . $hash . '"') {
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$contents = gzencode($contents, 9, $gzip ? FORCE_GZIP : FORCE_DEFLATE);
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// Return visit and no modifications, so do not send anything
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header("Content-Encoding: " . $encoding);
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header("HTTP/1.0 304 Not Modified");
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header('Content-Length: ' . strlen($contents));
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header('Content-Length: 0');
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echo $contents;
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} else {
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} else {
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// Send regular contents
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// First time visit or files were modified
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header('Content-Length: ' . strlen($contents));
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if ($cache) {
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echo $contents;
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// Determine supported compression method
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}
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$gzip = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
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echo strlen($contents);
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$deflate = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate');
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// Store cache
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// Determine used compression method
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if ($cache) {
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$encoding = $gzip ? 'gzip' : ($deflate ? 'deflate' : 'none');
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if ($fp = fopen($cachedir . '/' . $cachefile, 'wb')) {
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fwrite($fp, $contents);
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fclose($fp);
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}
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}
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}
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define('MINIFY_STRING', '"(?:[^"\\\]|\\\.)*"|\'(?:[^\'\\\]|\\\.)*\'');
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// Check for buggy versions of Internet Explorer
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define('MINIFY_COMMENT_CSS', '/\*[\s\S]*?\*/');
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if (!strstr($_SERVER['HTTP_USER_AGENT'], 'Opera') &&
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define('MINIFY_COMMENT_HTML', '<!\-{2}[\s\S]*?\-{2}>');
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preg_match('/^Mozilla\/4\.0 \(compatible; MSIE ([0-9]\.[0-9])/i', $_SERVER['HTTP_USER_AGENT'], $matches)) {
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define('X', "\x1A");
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$version = floatval($matches[1]);
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function n($s)
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if ($version < 6)
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{
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$encoding = 'none';
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return str_replace(["\r\n", "\r"], "\n", $s);
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}
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function t($a, $b)
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if ($version == 6 && !strstr($_SERVER['HTTP_USER_AGENT'], 'EV1'))
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{
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$encoding = 'none';
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if ($a && strpos($a, $b) === 0 && substr($a, -strlen($b)) === $b) {
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return substr(substr($a, strlen($b)), 0, -strlen($b));
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}
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return $a;
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}
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function fn_minify($pattern, $input)
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{
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return preg_split('#(' . implode('|', $pattern) . ')#', $input, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
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}
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function fn_minify_css($input, $comment = 2, $quote = 2)
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{
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if (!is_string($input) || !$input = n(trim($input))) return $input;
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$output = $prev = "";
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foreach (fn_minify([MINIFY_COMMENT_CSS, MINIFY_STRING], $input) as $part) {
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if (trim($part) === "") continue;
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if ($comment !== 1 && strpos($part, '/*') === 0 && substr($part, -2) === '*/') {
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if (
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$comment === 2 && (
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// Detect special comment(s) from the third character. It should be a `!` or `*` → `/*! keep */` or `/** keep */`
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strpos('*!', $part[2]) !== false ||
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// Detect license comment(s) from the content. It should contains character(s) like `@license`
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stripos($part, '@licence') !== false || // noun
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stripos($part, '@license') !== false || // verb
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stripos($part, '@preserve') !== false
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)
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) {
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$output .= $part;
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}
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}
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continue;
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}
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// Try the cache first to see if the combined files were already generated
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if ($part[0] === '"' && substr($part, -1) === '"' || $part[0] === "'" && substr($part, -1) === "'") {
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$cachefile = 'cache-' . $hash . '.' . $type . ($encoding != 'none' ? '.' . $encoding : '');
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// Remove quote(s) where possible …
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$q = $part[0];
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if (file_exists($cachedir . '/' . $cachefile)) {
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if (
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if ($fp = fopen($cachedir . '/' . $cachefile, 'rb')) {
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$quote !== 1 && (
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// <https://www.w3.org/TR/CSS2/syndata.html#uri>
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if ($encoding != 'none') {
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substr($prev, -4) === 'url(' && preg_match('#\burl\($#', $prev) ||
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header("Content-Encoding: " . $encoding);
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// <https://www.w3.org/TR/CSS2/syndata.html#characters>
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}
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substr($prev, -1) === '=' && preg_match('#^' . $q . '[a-zA-Z_][\w-]*?' . $q . '$#', $part)
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)
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header("Content-Type: text/" . $type);
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) {
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header("Content-Length: " . filesize($cachedir . '/' . $cachefile));
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$part = t($part, $q); // trim quote(s)
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fpassthru($fp);
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fclose($fp);
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exit;
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}
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}
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}
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$output .= $part;
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}
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// Get contents of the files
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$contents = '';
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reset($elements);
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while (list(, $element) = each($elements)) {
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$path = realpath($base . '/' . $element);
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$contents .= "\n\n" . file_get_contents($path);
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$contents = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $contents);
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$contents = str_replace(': ', ':', $contents);
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$contents = str_replace(array("\r\n", "\r", "\n", "\t", ' ', ' ', ' '), '', $contents);
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// $contents = fn_minify_css($contents);
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}
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// Send Content-Type
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header("Content-Type: text/" . $type);
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if (isset($encoding) && $encoding != 'none') {
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// Send compressed contents
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$contents = gzencode($contents, 9, $gzip ? FORCE_GZIP : FORCE_DEFLATE);
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header("Content-Encoding: " . $encoding);
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header('Content-Length: ' . strlen($contents));
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echo $contents;
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} else {
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} else {
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$output .= fn_minify_css_union($part);
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// Send regular contents
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header('Content-Length: ' . strlen($contents));
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echo $contents;
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}
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}
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$prev = $part;
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echo strlen($contents);
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}
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return trim($output);
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}
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function fn_minify_css_union($input)
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// Store cache
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{
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if ($cache) {
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if (stripos($input, 'calc(') !== false) {
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if ($fp = fopen($cachedir . '/' . $cachefile, 'wb')) {
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// Keep important white–space(s) in `calc()`
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fwrite($fp, $contents);
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$input = preg_replace_callback('#\b(calc\()\s*(.*?)\s*\)#i', function ($m) {
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fclose($fp);
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return $m[1] . preg_replace('#\s+#', X, $m[2]) . ')';
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}
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}, $input);
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}
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}
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}
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$input = preg_replace([
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// Fix case for `#foo<space>[bar="baz"]`, `#foo<space>*` and `#foo<space>:first-child` [^1]
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define('MINIFY_STRING', '"(?:[^"\\\]|\\\.)*"|\'(?:[^\'\\\]|\\\.)*\'');
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'#(?<=[\w])\s+(\*|\[|:[\w-]+)#',
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define('MINIFY_COMMENT_CSS', '/\*[\s\S]*?\*/');
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// Fix case for `[bar="baz"]<space>.foo`, `*<space>.foo`, `:nth-child(2)<space>.foo` and `@media<space>(foo: bar)<space>and<space>(baz: qux)` [^2]
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define('MINIFY_COMMENT_HTML', '<!\-{2}[\s\S]*?\-{2}>');
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'#([*\]\)])\s+(?=[\w\#.])#', '#\b\s+\(#', '#\)\s+\b#',
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define('X', "\x1A");
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// Minify HEX color code … [^3]
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'#\#([a-f\d])\1([a-f\d])\2([a-f\d])\3\b#i',
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function n($s)
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// Remove white–space(s) around punctuation(s) [^4]
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{
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'#\s*([~!@*\(\)+=\{\}\[\]:;,>\/])\s*#',
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return str_replace(["\r\n", "\r"], "\n", $s);
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// Replace zero unit(s) with `0` [^5]
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}
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'#\b(?<!\d\.)(?:0+\.)?0+(?:[a-z]+\b)#i',
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// Replace `0.6` with `.6` [^6]
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function t($a, $b)
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'#\b0+\.(\d+)#',
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{
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// Replace `:0 0`, `:0 0 0` and `:0 0 0 0` with `:0` [^7]
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if ($a && strpos($a, $b) === 0 && substr($a, -strlen($b)) === $b) {
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'#:(0\s+){0,3}0(?=[!,;\)\}]|$)#',
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return substr(substr($a, strlen($b)), 0, -strlen($b));
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// Replace `background(?:-position)?:(0|none)` with `background$1:0 0` [^8]
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}
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'#\b(background(?:-position)?):(?:0|none)([;,\}])#i',
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return $a;
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// Replace `(border(?:-radius)?|outline):none` with `$1:0` [^9]
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}
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'#\b(border(?:-radius)?|outline):none\b#i',
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// Remove empty selector(s) [^10]
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function fn_minify($pattern, $input)
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'#(^|[\{\}])(?:[^\{\}]+)\{\}#',
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{
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// Remove the last semi–colon and replace multiple semi–colon(s) with a semi–colon [^11]
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return preg_split('#(' . implode('|', $pattern) . ')#', $input, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
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'#;+([;\}])#',
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}
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// Replace multiple white–space(s) with a space [^12]
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'#\s+#'
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function fn_minify_css($input, $comment = 2, $quote = 2)
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], [
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{
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// [^1]
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if (!is_string($input) || !$input = n(trim($input))) return $input;
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X . '$1',
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$output = $prev = "";
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// [^2]
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foreach (fn_minify([MINIFY_COMMENT_CSS, MINIFY_STRING], $input) as $part) {
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'$1' . X, X . '(', ')' . X,
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if (trim($part) === "") continue;
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// [^3]
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if ($comment !== 1 && strpos($part, '/*') === 0 && substr($part, -2) === '*/') {
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'#$1$2$3',
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if (
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// [^4]
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$comment === 2 && (
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'$1',
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// Detect special comment(s) from the third character. It should be a `!` or `*` → `/*! keep */` or `/** keep */`
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// [^5]
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strpos('*!', $part[2]) !== false ||
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'0',
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// Detect license comment(s) from the content. It should contains character(s) like `@license`
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// [^6]
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stripos($part, '@licence') !== false || // noun
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'.$1',
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stripos($part, '@license') !== false || // verb
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// [^7]
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stripos($part, '@preserve') !== false
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':0',
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)
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// [^8]
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) {
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'$1:0 0$2',
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$output .= $part;
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// [^9]
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}
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'$1:0',
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continue;
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// [^10]
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}
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'$1',
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if ($part[0] === '"' && substr($part, -1) === '"' || $part[0] === "'" && substr($part, -1) === "'") {
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// [^11]
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// Remove quote(s) where possible …
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'$1',
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$q = $part[0];
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// [^12]
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if (
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' '
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$quote !== 1 && (
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||||||
], $input);
|
// <https://www.w3.org/TR/CSS2/syndata.html#uri>
|
||||||
return trim(str_replace(X, ' ', $input));
|
substr($prev, -4) === 'url(' && preg_match('#\burl\($#', $prev) ||
|
||||||
}
|
// <https://www.w3.org/TR/CSS2/syndata.html#characters>
|
||||||
|
substr($prev, -1) === '=' && preg_match('#^' . $q . '[a-zA-Z_][\w-]*?' . $q . '$#', $part)
|
||||||
|
)
|
||||||
|
) {
|
||||||
|
$part = t($part, $q); // trim quote(s)
|
||||||
|
}
|
||||||
|
$output .= $part;
|
||||||
|
} else {
|
||||||
|
$output .= fn_minify_css_union($part);
|
||||||
|
}
|
||||||
|
$prev = $part;
|
||||||
|
}
|
||||||
|
return trim($output);
|
||||||
|
}
|
||||||
|
|
||||||
|
function fn_minify_css_union($input)
|
||||||
|
{
|
||||||
|
if (stripos($input, 'calc(') !== false) {
|
||||||
|
// Keep important white–space(s) in `calc()`
|
||||||
|
$input = preg_replace_callback('#\b(calc\()\s*(.*?)\s*\)#i', function ($m) {
|
||||||
|
return $m[1] . preg_replace('#\s+#', X, $m[2]) . ')';
|
||||||
|
}, $input);
|
||||||
|
}
|
||||||
|
$input = preg_replace([
|
||||||
|
// Fix case for `#foo<space>[bar="baz"]`, `#foo<space>*` and `#foo<space>:first-child` [^1]
|
||||||
|
'#(?<=[\w])\s+(\*|\[|:[\w-]+)#',
|
||||||
|
// Fix case for `[bar="baz"]<space>.foo`, `*<space>.foo`, `:nth-child(2)<space>.foo` and `@media<space>(foo: bar)<space>and<space>(baz: qux)` [^2]
|
||||||
|
'#([*\]\)])\s+(?=[\w\#.])#', '#\b\s+\(#', '#\)\s+\b#',
|
||||||
|
// Minify HEX color code … [^3]
|
||||||
|
'#\#([a-f\d])\1([a-f\d])\2([a-f\d])\3\b#i',
|
||||||
|
// Remove white–space(s) around punctuation(s) [^4]
|
||||||
|
'#\s*([~!@*\(\)+=\{\}\[\]:;,>\/])\s*#',
|
||||||
|
// Replace zero unit(s) with `0` [^5]
|
||||||
|
'#\b(?<!\d\.)(?:0+\.)?0+(?:[a-z]+\b)#i',
|
||||||
|
// Replace `0.6` with `.6` [^6]
|
||||||
|
'#\b0+\.(\d+)#',
|
||||||
|
// Replace `:0 0`, `:0 0 0` and `:0 0 0 0` with `:0` [^7]
|
||||||
|
'#:(0\s+){0,3}0(?=[!,;\)\}]|$)#',
|
||||||
|
// Replace `background(?:-position)?:(0|none)` with `background$1:0 0` [^8]
|
||||||
|
'#\b(background(?:-position)?):(?:0|none)([;,\}])#i',
|
||||||
|
// Replace `(border(?:-radius)?|outline):none` with `$1:0` [^9]
|
||||||
|
'#\b(border(?:-radius)?|outline):none\b#i',
|
||||||
|
// Remove empty selector(s) [^10]
|
||||||
|
'#(^|[\{\}])(?:[^\{\}]+)\{\}#',
|
||||||
|
// Remove the last semi–colon and replace multiple semi–colon(s) with a semi–colon [^11]
|
||||||
|
'#;+([;\}])#',
|
||||||
|
// Replace multiple white–space(s) with a space [^12]
|
||||||
|
'#\s+#'
|
||||||
|
], [
|
||||||
|
// [^1]
|
||||||
|
X . '$1',
|
||||||
|
// [^2]
|
||||||
|
'$1' . X, X . '(', ')' . X,
|
||||||
|
// [^3]
|
||||||
|
'#$1$2$3',
|
||||||
|
// [^4]
|
||||||
|
'$1',
|
||||||
|
// [^5]
|
||||||
|
'0',
|
||||||
|
// [^6]
|
||||||
|
'.$1',
|
||||||
|
// [^7]
|
||||||
|
':0',
|
||||||
|
// [^8]
|
||||||
|
'$1:0 0$2',
|
||||||
|
// [^9]
|
||||||
|
'$1:0',
|
||||||
|
// [^10]
|
||||||
|
'$1',
|
||||||
|
// [^11]
|
||||||
|
'$1',
|
||||||
|
// [^12]
|
||||||
|
' '
|
||||||
|
], $input);
|
||||||
|
return trim(str_replace(X, ' ', $input));
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user