Archived
1
0
This repository has been archived on 2020-12-10. You can view files and clone it, but cannot push or open issues or pull requests.
old/combine.php
2018-10-16 18:28:42 +02:00

253 lines
8.5 KiB
PHP
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?php
$cache = true;
$cachedir = dirname(__FILE__) . '/assets/cache';
$cssdir = dirname(__FILE__) . '/assets/css';
$jsdir = dirname(__FILE__) . '/assets/js';
// Determine the directory and type we should use
switch ($_GET['type']) {
case 'css':
$base = realpath($cssdir);
break;
case 'javascript':
$base = realpath($jsdir);
break;
default:
header("HTTP/1.0 503 Not Implemented");
exit;
};
$type = $_GET['type'];
$elements = explode(',', $_GET['files']);
// Determine last modification date of the files
$lastmodified = 0;
while (list(, $element) = each($elements)) {
$path = realpath($base . '/' . $element);
if (($type == 'javascript' && substr($path, -3) != '.js') ||
($type == 'css' && substr($path, -4) != '.css')) {
header("HTTP/1.0 403 Forbidden");
exit;
}
if (substr($path, 0, strlen($base)) != $base || !file_exists($path)) {
header("HTTP/1.0 404 Not Found");
exit;
}
$lastmodified = max($lastmodified, filemtime($path));
}
// Send Etag hash
$hash = $lastmodified . '-' . md5($_GET['files']);
header("Etag: \"" . $hash . "\"");
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) &&
stripslashes($_SERVER['HTTP_IF_NONE_MATCH']) == '"' . $hash . '"') {
// Return visit and no modifications, so do not send anything
header("HTTP/1.0 304 Not Modified");
header('Content-Length: 0');
} else {
// First time visit or files were modified
if ($cache) {
// Determine supported compression method
$gzip = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip');
$deflate = strstr($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate');
// Determine used compression method
$encoding = $gzip ? 'gzip' : ($deflate ? 'deflate' : 'none');
// Check for buggy versions of Internet Explorer
if (!strstr($_SERVER['HTTP_USER_AGENT'], 'Opera') &&
preg_match('/^Mozilla\/4\.0 \(compatible; MSIE ([0-9]\.[0-9])/i', $_SERVER['HTTP_USER_AGENT'], $matches)) {
$version = floatval($matches[1]);
if ($version < 6)
$encoding = 'none';
if ($version == 6 && !strstr($_SERVER['HTTP_USER_AGENT'], 'EV1'))
$encoding = 'none';
}
// Try the cache first to see if the combined files were already generated
$cachefile = 'cache-' . $hash . '.' . $type . ($encoding != 'none' ? '.' . $encoding : '');
if (file_exists($cachedir . '/' . $cachefile)) {
if ($fp = fopen($cachedir . '/' . $cachefile, 'rb')) {
if ($encoding != 'none') {
header("Content-Encoding: " . $encoding);
}
header("Content-Type: text/" . $type);
header("Content-Length: " . filesize($cachedir . '/' . $cachefile));
fpassthru($fp);
fclose($fp);
exit;
}
}
}
// Get contents of the files
$contents = '';
reset($elements);
while (list(, $element) = each($elements)) {
$path = realpath($base . '/' . $element);
$contents .= "\n\n" . file_get_contents($path);
// $contents = fn_minify_css($contents);
}
// Send Content-Type
header("Content-Type: text/" . $type);
if (isset($encoding) && $encoding != 'none') {
// Send compressed contents
$contents = gzencode($contents, 9, $gzip ? FORCE_GZIP : FORCE_DEFLATE);
header("Content-Encoding: " . $encoding);
header('Content-Length: ' . strlen($contents));
echo $contents;
} else {
// Send regular contents
header('Content-Length: ' . strlen($contents));
echo $contents;
}
echo strlen($contents);
// Store cache
if ($cache) {
if ($fp = fopen($cachedir . '/' . $cachefile, 'wb')) {
fwrite($fp, $contents);
fclose($fp);
}
}
}
define('MINIFY_STRING', '"(?:[^"\\\]|\\\.)*"|\'(?:[^\'\\\]|\\\.)*\'');
define('MINIFY_COMMENT_CSS', '/\*[\s\S]*?\*/');
define('MINIFY_COMMENT_HTML', '<!\-{2}[\s\S]*?\-{2}>');
define('X', "\x1A");
function n($s)
{
return str_replace(["\r\n", "\r"], "\n", $s);
}
function t($a, $b)
{
if ($a && strpos($a, $b) === 0 && substr($a, -strlen($b)) === $b) {
return substr(substr($a, strlen($b)), 0, -strlen($b));
}
return $a;
}
function fn_minify($pattern, $input)
{
return preg_split('#(' . implode('|', $pattern) . ')#', $input, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE);
}
function fn_minify_css($input, $comment = 2, $quote = 2)
{
if (!is_string($input) || !$input = n(trim($input))) return $input;
$output = $prev = "";
foreach (fn_minify([MINIFY_COMMENT_CSS, MINIFY_STRING], $input) as $part) {
if (trim($part) === "") continue;
if ($comment !== 1 && strpos($part, '/*') === 0 && substr($part, -2) === '*/') {
if (
$comment === 2 && (
// Detect special comment(s) from the third character. It should be a `!` or `*` → `/*! keep */` or `/** keep */`
strpos('*!', $part[2]) !== false ||
// Detect license comment(s) from the content. It should contains character(s) like `@license`
stripos($part, '@licence') !== false || // noun
stripos($part, '@license') !== false || // verb
stripos($part, '@preserve') !== false
)
) {
$output .= $part;
}
continue;
}
if ($part[0] === '"' && substr($part, -1) === '"' || $part[0] === "'" && substr($part, -1) === "'") {
// Remove quote(s) where possible …
$q = $part[0];
if (
$quote !== 1 && (
// <https://www.w3.org/TR/CSS2/syndata.html#uri>
substr($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 whitespace(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 whitespace(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 semicolon and replace multiple semicolon(s) with a semicolon [^11]
'#;+([;\}])#',
// Replace multiple whitespace(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));
}