135 lines
2.7 KiB
PHP
135 lines
2.7 KiB
PHP
<?php
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/**
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* MiniMVC
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*
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* Convention-based micro-framework for PHP
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*
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* @package miniMVC
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* @author Timothy J. Warren
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* @copyright Copyright (c) 2011 - 2012
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* @link https://github.com/aviat4ion/miniMVC
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* @license http://philsturgeon.co.uk/code/dbad-license
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*/
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// --------------------------------------------------------------------------
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/**
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* CSS Minifier and Cacher
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*
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* @package miniMVC
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* @subpackage Assets
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*/
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//Get config files
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require('./config/config.php');
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//Include the css groups
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$groups = require("./config/css_groups.php");
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//The name of this file
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$this_file = __FILE__;
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// --------------------------------------------------------------------------
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/**
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* CSS Minifier
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*
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* @param string $buffer
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* @return string
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*/
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function compress($buffer) {
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//Remove CSS comments
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$buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);
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//Remove tabs, spaces, newlines, etc.
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$buffer = preg_replace('`\s+`', ' ', $buffer);
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$replace = array(
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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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': ' => ':',
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'; ' => ';',
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);
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//Eradicate every last space!
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$buffer = trim(strtr($buffer, $replace));
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$buffer = str_replace('{ ', '{', $buffer);
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$buffer = str_replace('} ', '}', $buffer);
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return $buffer;
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}
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// --------------------------------------------------------------------------
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//Creative rewriting
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$pi = $_SERVER['PATH_INFO'];
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$pia = explode('/', $pi);
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$pia_len = count($pia);
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$i = 1;
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while($i < $pia_len)
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{
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$j = $i+1;
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$j = (isset($pia[$j])) ? $j : $i;
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$_GET[$pia[$i]] = $pia[$j];
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$i = $j + 1;
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};
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$css = '';
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$modified = array();
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if (isset($groups[$_GET['g']]))
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{
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foreach ($groups[$_GET['g']] as &$file)
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{
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$new_file = $css_root.$file;
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$css .= file_get_contents($new_file);
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$modified[] = filemtime($new_file);
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}
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}
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//Add this page too
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$modified[] = filemtime($this_file);
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//Get the latest modified date
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rsort($modified);
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$last_modified = $modified[0];
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$requested_time= (isset($_SERVER['HTTP_IF_MODIFIED_SINCE']))
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? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])
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: time();
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if ($last_modified === $requested_time)
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{
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header("HTTP/1.1 304 Not Modified");
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exit();
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}
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if (!isset($_GET['debug']))
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{
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$css = compress($css);
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}
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$size = strlen($css) * 8;
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//This GZIPs the CSS for transmission to the user
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//making file size smaller and transfer rate quicker
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ob_start("ob_gzhandler");
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header("Content-Type: text/css; charset=utf8");
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header("Cache-control: public, max-age=691200, must-revalidate");
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header("Last-Modified: ".gmdate('D, d M Y H:i:s', $last_modified)." GMT");
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header("Expires: ".gmdate('D, d M Y H:i:s', (filemtime($this_file) + 691200))." GMT");
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echo $css;
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ob_end_flush();
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//End of css.php
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