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<?php
/**
* Easy Min
*
* Simple minification for better website performance
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012-2016
* @link https://git.timshomepage.net/aviat4ion/Easy-Min
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
namespace Aviat\EasyMin;
//Creative rewriting of /g/groupname to ?g=groupname
$pi = $_SERVER['PATH_INFO'];
$pia = explode('/', $pi);
$pia_len = count($pia);
$i = 1;
while($i < $pia_len)
{
$j = $i+1;
$j = (isset($pia[$j])) ? $j : $i;
$_GET[$pia[$i]] = $pia[$j];
$i = $j + 1;
};
class FileNotChangedException extends \Exception {}
class BaseMin {
/**
* Get value of the if-modified-since header
*
* @return int - timestamp to compare for cache control
*/
protected function get_if_modified()
{
return (array_key_exists('HTTP_IF_MODIFIED_SINCE', $_SERVER))
? strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE'])
: time();
}
/**
* Get value of etag to compare to hash of output
*
* @return string - the etag to compare
*/
protected function get_if_none_match()
{
return (array_key_exists('HTTP_IF_NONE_MATCH', $_SERVER))
? $_SERVER['HTTP_IF_NONE_MATCH']
: '';
}
/**
* Determine whether or not to send debug version
*
* @return boolean
*/
protected function is_not_debug()
{
return ! $this->is_debug_call();
}
/**
* Determine whether or not to send debug version
*
* @return boolean
*/
protected function is_debug_call()
{
return array_key_exists('debug', $_GET);
}
/**
* Send actual output to browser
*
* @param string $content - the body of the response
* @param string $mime_type - the content type
* @param int $last_modified - the last modified date
* @return void
*/
protected function send_final_output($content, $mime_type, $last_modified)
{
//This GZIPs the CSS for transmission to the user
//making file size smaller and transfer rate quicker
ob_start("ob_gzhandler");
$expires = $last_modified + 691200;
$last_modified_date = gmdate('D, d M Y H:i:s', $last_modified);
$expires_date = gmdate('D, d M Y H:i:s', $expires);
header("Content-Type: {$mime_type}; charset=utf8");
header("Cache-control: public, max-age=691200, must-revalidate");
header("Last-Modified: {$last_modified_date} GMT");
header("Expires: {$expires_date} GMT");
echo $content;
ob_end_flush();
}
/**
* Send a 304 Not Modified header
*
* @return void
*/
public static function send304()
{
header("status: 304 Not Modified", true, 304);
}
}