CSS Porter

porter-css.php

<?php
/**
 * CSS Porter
 * this file loads and prints css files requested
 */
/*= app name for printing =*/
$appName = 'CSS Porter ver 1.0';
/*= relative path to the folder containing the css files =*/
$cssFolder = './../css';
/*= preset debug mode =*/
$debugMode = ($_GET['debug'] === 'yes') ? true : false;
/*= output buffer start =*/
ob_start();
/*= set output header =*/
header('Content-Type: text/css');
header('Content-Disposition: inline; filename="container.css"');
header('Cache-Control: no-cache');
header('Pragma: no-cache');
/*= print title =*/
if ($debugMode)
	printf("/* %s */\n", $appName);
/*= fetch raw request =*/
/*= if no css file list request detected, halt =*/
if (!array_key_exists('l', $_GET))
	die('/* no request */');
$rawRequestString = $_GET['l'];
/*= force direct to the folder containing this php file =*/
chdir(dirname(__FILE__));
/*= css file folder check =*/
if (!file_exists($cssFolder) || !is_dir($cssFolder))
	die('/* css directory not found */');
/*= force direct to directory containing css files =*/
chdir($cssFolder);
/*= print raw requests =*/
if ($debugMode)
	printf("/* raw request: %s */\n", $rawRequestString);
/*= turn requested file list (seperated by ',') into an array =*/
$requestList = explode(',', $rawRequestString);
/*= traversal all requested items and setup a hash table for files to be loaded =*/
/*= rawFiles is an array of css file contents with their filename as keys =*/
$rawFiles = array();
/*= printList is an array of css filenames in which order css file contents should be printed =*/
$printList = array();
if ($debugMode)
	print("/* requested css files: */\n");
foreach ($requestList as $value) {
	$requestItem = trim(basename($value));
	if ($requestItem === '') continue;
	if ($debugMode)
		printf("/* 	%s, */\n", $requestItem);
	if (!array_key_exists($requestItem, $rawFiles))
		$printList[] = $requestItem;
	$rawFiles[$requestItem] = false;
}
if ($debugMode)
	print("/* loading requested files: */\n");
foreach ($rawFiles as $key => $value) {
	$standardFileName = "{$key}.css";
	$preferedFileName = "{$key}.min.css";
	if (file_exists($preferedFileName) && is_file($preferedFileName)) {
		$rawFiles[$key] = cssCompress(file_get_contents($preferedFileName), $compression);
		if ($debugMode)
			printf("/* 	./%s (md5: %s) */\n", $preferedFileName, md5($rawFiles[$key]));
	} else if (file_exists($standardFileName) && is_file($standardFileName)) {
		$rawFiles[$key] = cssCompress(file_get_contents($standardFileName), $compression);
		if ($debugMode)
			printf("/* 	./%s (md5: %s) */\n", $standardFileName, md5($rawFiles[$key]));
	} else {
		if ($debugMode)
			printf("/* 	./%s %s */\n", $standardFileName, 'not found');
	}
}
for ($i = 0; $i < count($printList); ++$i) {
	$key = $printList[$i];
	$content = $rawFiles[$key];
	printf("\n/* %s */\n%s\n", $key, $content);
}
ob_end_flush();

function cssCompress($cssContent)
{
	// remove comment blocks
	$cssContent = preg_replace('/\/\*.*\*\//uUs', '', $cssContent);
	// remove white spaces
	$cssContent = preg_replace('/\s*(\n|\r)\s*/um', '', $cssContent);
	return $cssContent;
}
?>