asset.php

<?php
/**
 * Static singleton class for handling Assets
 *
 * @usage
 *     Asset::css('myscript.css');
 *
 *     Asset::css(array(
 *         'my-script.css',
 *         'another.css',
 *     ));
 * 
 *     Asset::js('myjsfile.js');
 * 
 *     Asset::js('another.js');
 * 
 *     // Compile a js file from multiple files
 *     Asset::js_group('app.js', array(
 *         'app.main.js',
 *         'app.additional.js',
 *         'app.helpers.js',
 *     ));
 * 
 *     // Echo <script> and <link>
 *     echo Asset::css_includes();
 *     echo Asset::js_includes();
 */
 
class Asset {
	
	protected static $_css = array();
	protected static $_css_groups = array();
	protected static $_js = array();
	protected static $_js_groups = array();
	
	public static function css($file)
	{
		// Add single css
		if (is_string($file))
		{
			Asset::$_css[] = $file;
			return;
		}
		
		// Merge array
		Asset::$_css += $file;
	}
	
	public static function css_group($group, $file)
	{
		// Add single css
		if (is_string($file))
		{
			Asset::$_css_groups[$group][] = $file;
			return;
		}
		
		// If not set
		if ( ! isset(Asset::$_css_groups[$group]))
		{
			Asset::$_css_groups[$group] = array();
		}
		
		// Merge array
		Asset::$_css_groups[$group] += $file;
	}
	
	public static function js($file)
	{
		// Add single css
		if (is_string($file))
		{
			Asset::$_js[] = $file;
			return;
		}
		
		// Merge array
		Asset::$_js += $file;
	}
	
	public static function js_group($group, $file)
	{
		// Add single css
		if (is_string($file))
		{
			Asset::$_js_groups[$group][] = $file;
			return;
		}
		
		// If not set
		if ( ! isset(Asset::$_js_groups[$group]))
		{
			Asset::$_js_groups[$group] = array();
		}
		
		// Merge array
		Asset::$js_groups[$group] += $file;
	}
	
	public static function css_includes()
	{
		// Compile groups
		Assets::compile_groups();
		
		// Compile sass if neccessary
		Asset::compile_less();
		
		// Output
		$css = array();
		
		//
		foreach (Asset::$_css as $_css)
		{
			$css[] = '<link rel="stylesheet" href="'.$_css.'">';
		}
		
		// Return css includes
		return implode("\n", $css);
	}
	
	public static function js_includes()
	{
		// Output
		$js = array();
		
		// Compile groups
		Assets::compile_groups();
		
		//
		foreach (Asset::$_js as $_js)
		{
			$js[] = '<script src="'.$_js.'"></script>';
		}
		
		// Return css includes
		return implode("\n", $js);
	}
	
	public static function compile_groups($force = FALSE)
	{
		// compile time
	}
	
	public static function compile_less($force = FALSE)
	{
		foreach (Asset::$css as $_k => $_css)
		{
			if (strpos($_css, '.less') === FALSE)
			{
				continue;
			}
			
			// New file
			$css_output_file = str_replace('.less', '.css', $_css);
			
			// Compile
			require_once('lessc.inc.php');

			try
			{
				lessc::ccompile($_css, $css_output_file);
			}
			catch (Exception $e)
			{
				die($e);
			}
			
			// Replace .less for .css
			Asset::$css[$_k] = $css_output_file;
		}
	}
	
}

kodizga tushinmadim