/blog/www/system/library/ZendY/View/Helper/BundleAbstract.php

<?php
abstract class ZendY_View_Helper_BundleAbstract
{
    /**
     * View object
     *
     * @var Zend_View_Interface
     */
    public $view = null;

    private $_items = array();

    private $_baseUrl = '';
    private $_documentRoot = '';
    private $_cacheDir = '';
    private $_urlPrefix = '';

    private $_bundleId = '';
    private $_bundleExt = '';

    /**
     * Set the View object
     *
     * @param  Zend_View_Interface $view
     * @return Zend_View_Helper_Abstract
     */
    public function setView(Zend_View_Interface $view)
    {
        $this->view = $view;
        $this->_baseUrl = $this->view->baseUrl();
        return $this;
    }

    public function getItems()
    {
        return $this->_items;
    }

    public function setDocumentRoot($value)
    {
        $this->_documentRoot = $value;
        return $this;
    }

    public function getDocumentRoot()
    {
        return $this->_documentRoot;
    }

    public function setCacheDir($value)
    {
        $this->_cacheDir = $value;
        if ('' === $this->_urlPrefix) {
            $this->_urlPrefix = $this->_cacheDir;
        }
        return $this;
    }

    public function getCacheDir()
    {
        return $this->_cacheDir;
    }

    public function setUrlPrefix($value)
    {
        $this->_urlPrefix = $value;
        return $this;
    }

    public function getUrlPrefix()
    {
        return $this->_urlPrefix;
    }

    public function setBundleExt($value)
    {
        $this->_bundleExt = $value;
        return $this;
    }

    public function getBundleExt()
    {
        return $this->_bundleExt;
    }

    public function __construct()
    {
        $this->_documentRoot = $_SERVER['DOCUMENT_ROOT'];
    }

    abstract public function toString();

    protected function _addFile($file)
    {
        $this->_items[] = array(
            'type' => 'file',
            'src' => $this->_cutBaseUrl($file),
        );
        $this->_bundleId = '';
    }

    protected function _addSource($source)
    {
        $this->_items[] = array(
            'type' => 'inline',
            'src' => $source,
        );
        $this->_bundleId = '';
    }

    protected function _cutBaseUrl($url)
    {
        if ($this->_baseUrl
                && substr_compare($url, $this->_baseUrl, 0,
                        strlen($this->_baseUrl)) === 0) {
            $url = substr($url, strlen($this->_baseUrl));
        }
        return $url;
    }

    protected function _getBundleData()
    {
        $data = '';
        foreach ($this->_items as $item) {
            if ($item['type'] == 'file') {
                $data .= file_get_contents($this->_documentRoot . '/'
                        . $item['src']) . PHP_EOL;
            } else {
                $data .= $item['src'] . PHP_EOL;
            }
            
        }
        return $data;
    }

    protected function _createBundle($bundleFile)
    {
        $data = $this->_getBundleData();
        file_put_contents($bundleFile, $data);
    }

    protected function _getBundleId()
    {
        if ('' === $this->_bundleId) {
            $id = '';
            foreach ($this->_items as $item) {
                $id .= $item['src'];
            }
            $this->_bundleId = md5($id);
        }
        return $this->_bundleId;
    }

    protected function _getBundlePath()
    {
        $id = $this->_getBundleId();
        return "{$this->_cacheDir}/{$id}{$this->_bundleExt}";
    }

    protected function _getBundleUrl()
    {
        $id = $this->_getBundleId();
        return "{$this->_baseUrl}/{$this->_urlPrefix}/{$id}{$this->_bundleExt}";
    }

    public function __toString()
    {
        return $this->toString();
    }
}