147 lines
3.9 KiB
PHP
147 lines
3.9 KiB
PHP
<?php defined('BASEPATH') || exit('No direct script access allowed');
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/**
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*
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* @author Eike Foken <kontakt@eikefoken.de>
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*/
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class Assets {
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private $assetsFolder;
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private $cacheFolder;
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private $css = array();
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private $javascript = array();
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private $CI;
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/**
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* Constructor.
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*/
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public function __construct($config = array()) {
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log_message('debug', "Asset Class Initialized");
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// set the super object to a local variable
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$this->CI =& get_instance();
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// set the asset path
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$this->assetsPath = ($config['assets_folder'] != '') ? $config['assets_folder'] : 'assets';
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if (!is_dir($this->assetsPath)) {
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log_message('error', "Asset folder does not exist");
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}
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// set the cache path
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$this->cachePath = ($config['cache_folder'] != '') ? $config['cache_folder'] : 'assets/cache';
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if (!is_dir($this->cachePath) || !is_really_writable($this->cachePath)) {
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$this->cacheEnable = false;
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}
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}
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/**
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* Loads an asset.
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*
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* @param string $type
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* @param string $filename
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* @param mixed $attributes
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*/
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public function load($type, $filename, $attributes = '') {
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// validate type parameter
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$type = strtolower($type);
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if (!in_array($type, array('image', 'images', 'icon', 'icons', 'css', 'js'))) {
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log_message('error', "Invalid asset type '" . $type . "' used.");
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}
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if (in_array($type, array('image', 'icon'))) {
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$type .= 's';
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}
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// build the path strings
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$filepath = $this->assetsPath . $type . '/' . $filename;
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if (!file_exists($filepath)) {
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log_message('error', "Unable to load requested asset: $filename");
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return '';
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}
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switch ($type) {
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case 'images':
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case 'icons':
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if (!isset($attributes['alt'])) {
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$attributes['alt'] = '';
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}
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$output = '<img src="' . $this->CI->config->slash_item('base_url') . $filepath . '"' . $this->parseAttributes($attributes) . ' />';
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break;
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case 'css':
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$output = '<link href="' . $this->CI->config->slash_item('base_url') . $filepath . '" rel="stylesheet" type="text/css"' . $this->parseAttributes($attributes) . " />\n";
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break;
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case 'js':
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// $this->javascript[] = array('filepath' => $filepath, 'attributes' => $attributes);
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// $code = file_get_contents(FCPATH . $this->assetsFolder . $type . '/' . $filename);
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// if ($this->CI->config->item('enable_jsmin') == true) {
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// $this->CI->load->library('jsmin');
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// $code = $this->CI->jsmin->minify($code);
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// }
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// $httpHeaders = '<' . '?php header("Content-type: text/javascript; charset: UTF-8");?' . '>';
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// if ($this->CI->config->item('compress_output') == true) {
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// $httpHeaders .= '';
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// }
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// $code = $httpHeaders . "\n" . $code;
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// file_put_contents(FCPATH . $this->cacheFolder . $type . '_' . md5($code) . '.php', $code);
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$output = '<script src="' . $this->CI->config->slash_item('base_url') . $filepath . '" language="javascript" type="text/javascript"></script>';
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$output .= "\n";
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break;
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default:
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$output = '';
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}
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return $output;
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}
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/**
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* Generates an URL of the given asset.
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*
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* @param string $type
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* @param string $filename
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* @return string
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*/
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public function url($type, $filename) {
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$type = strtolower($type);
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if (!in_array($type, array('image', 'images', 'icon', 'icons', 'css', 'js'))) {
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log_message('error', "'" . $type . "' is not a valid asset type");
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return;
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}
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if (in_array($type, array('image', 'icon'))) {
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$type .= 's';
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}
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return $this->CI->config->slash_item('base_url') . $this->assetsPath . $type . '/' . $filename;
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}
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/**
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* Parses out the attributes.
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*
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* @param mixed $attributes
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* @return string
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*/
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private function parseAttributes($attributes) {
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if (is_string($attributes)) {
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return ($attributes != '') ? ' '.$attributes : '';
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}
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$output = '';
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foreach ($attributes as $key => $value) {
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$output .= ' ' . $key . '="' . $value . '"';
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}
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return $output;
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}
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}
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/* End of file Assets.php */
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/* Location: ./application/libraries/Assets.php */
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