phpsass-compile.php

<?php

/**
 * This file is intended to be used in conjunction with Apache2's mod_actions,
 * wherein you can have a .htaccess file like so for automatic compilation:
 *     Action compile-sass /git/phpsass/compile-apache.php
 *     AddHandler compile-sass .sass .scss
 */
header('X-Powered-By: phpsass');
header('Content-type: text/css');

$file_path = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
$cache_path = __DIR__ . '/css/cache/';
$css_file = rtrim($_SERVER['DOCUMENT_ROOT'], '/') . $file_path;
$syntax = strtolower(substr($css_file, -4, 4));
if( $syntax != 'scss' && $syntax != 'sass' ){
	exit();
}
$style = isset($_GET['style']) ? $_GET['style'] : 'expanded';
if(!is_string($style) || !in_array($style, array('expanded', 'nested', 'compact', 'compressed'))){
	$style = 'expanded';
}
$cache_file  = $cache_path . '/' . md5($file_path) . ".{$syntax}.{$style}.css";

$options = array(
	'style' => $style,
	'cache' => TRUE,
	'syntax' => $syntax,
	'debug' => TRUE,
	'line_numbers' => TRUE,
	'callbacks' => array(
		'warn' => 'warn',
		'debug' => 'debug'
	),
	'load_path_functions' => array('loadCallback'),
    'load_paths' => array(dirname($css_file)),
    'functions' => getFunctions(array('Compass')),
    'extensions' => array('Compass')
);

// Execute the compiler.
try {
	if( $options['cache'] ){
		if( file_modify_time($css_file) > file_modify_time($cache_file) ){
			include './phpsass/SassParser.php';
			$parser = new SassParser($options);
			$css = $parser->toCss($css_file);
			file_put_contents($cache_file, $css);
			echo $css;
		}else{
			echo file_get_contents($cache_file);
		}
	}else{
        include './phpsass/SassParser.php';
        $parser = new SassParser($options);
        echo $parser->toCss($css_file);
    }
} catch (Exception $e) {
	echo $e->getMessage();	
}

function file_modify_time($file_path)
{
	return file_exists($file_path) ? max( @filectime($file_path), @filemtime($file_path) ) : -1;
}

function warn($text, $context)
{
	print "/** WARN: $text, on line {$context->node->token->line} of {$context->node->token->filename} **/\n";
}
function debug($text, $context)
{
	print "/** DEBUG: $text, on line {$context->node->token->line} of {$context->node->token->filename} **/\n";
}
function loadCallback($file, $parser)
{
    $paths = array();
    foreach ($parser->extensions as $extensionName) {
        $namespace = ucwords(preg_replace('/[^0-9a-z]+/', '_', strtolower($extensionName)));
        $extensionPath = './phpsass/Extensions/' . $namespace . '/' . $namespace . '.php';
        if (file_exists($extensionPath)) {
            require_once($extensionPath);
            $hook = $namespace . '::resolveExtensionPath';
            $returnPath = call_user_func($hook, $file, $parser);
            if (!empty($returnPath)) {
                $paths[] = $returnPath;
            }

        }
    }
    return $paths;
}
function getFunctions($extensions)
{
    $output = array();
    if (!empty($extensions)) {
        foreach ($extensions as $extension) {
            $name = explode('/', $extension, 2);
            $namespace = ucwords(preg_replace('/[^0-9a-z]+/', '_', strtolower(array_shift($name))));
            $extensionPath = './phpsass/Extensions/' . $namespace . '/' . $namespace . '.php';
            if (file_exists(
                $extensionPath
            )
            ) {
                require_once($extensionPath);
                $namespace = $namespace . '::';
                $function = 'getFunctions';
                $output = array_merge($output, call_user_func($namespace . $function, $namespace));
            }
        }
    }
    return $output;
}