/lenasys/trunk

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

/**

 * CodeIgniter

 *

 * An open source application development framework for PHP 5.1.6 or newer

 *

 * @package		CodeIgniter

 * @author		ExpressionEngine Dev Team

 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.

 * @license		http://codeigniter.com/user_guide/license.html

 * @link		http://codeigniter.com

 * @since		Version 1.0

 * @filesource

 */

// ------------------------------------------------------------------------

/**

 * Parser Class

 *

 * @package		CodeIgniter

 * @subpackage	Libraries

 * @category	Parser

 * @author		ExpressionEngine Dev Team

 * @link		http://codeigniter.com/user_guide/libraries/parser.html

 */

class CI_Parser {

	var $l_delim = '{';

	var $r_delim = '}';

	var $object;

	/**

	 *  Parse a template

	 *

	 * Parses pseudo-variables contained in the specified template view,

	 * replacing them with the data in the second param

	 *

	 * @access	public

	 * @param	string

	 * @param	array

	 * @param	bool

	 * @return	string

	 */

	public function parse($template, $data, $return = FALSE)

	{

		$CI =& get_instance();

		$template = $CI->load->view($template, $data, TRUE);

		return $this->_parse($template, $data, $return);

	}

	// --------------------------------------------------------------------

	/**

	 *  Parse a String

	 *

	 * Parses pseudo-variables contained in the specified string,

	 * replacing them with the data in the second param

	 *

	 * @access	public

	 * @param	string

	 * @param	array

	 * @param	bool

	 * @return	string

	 */

	function parse_string($template, $data, $return = FALSE)

	{

		return $this->_parse($template, $data, $return);

	}

	// --------------------------------------------------------------------

	/**

	 *  Parse a template

	 *

	 * Parses pseudo-variables contained in the specified template,

	 * replacing them with the data in the second param

	 *

	 * @access	public

	 * @param	string

	 * @param	array

	 * @param	bool

	 * @return	string

	 */

	function _parse($template, $data, $return = FALSE)

	{

		if ($template == '')

		{

			return FALSE;

		}

		foreach ($data as $key => $val)

		{

			if (is_array($val))

			{

				$template = $this->_parse_pair($key, $val, $template);

			}

			else

			{

				$template = $this->_parse_single($key, (string)$val, $template);

			}

		}

		if ($return == FALSE)

		{

			$CI =& get_instance();

			$CI->output->append_output($template);

		}

		return $template;

	}

	// --------------------------------------------------------------------

	/**

	 *  Set the left/right variable delimiters

	 *

	 * @access	public

	 * @param	string

	 * @param	string

	 * @return	void

	 */

	function set_delimiters($l = '{', $r = '}')

	{

		$this->l_delim = $l;

		$this->r_delim = $r;

	}

	// --------------------------------------------------------------------

	/**

	 *  Parse a single key/value

	 *

	 * @access	private

	 * @param	string

	 * @param	string

	 * @param	string

	 * @return	string

	 */

	function _parse_single($key, $val, $string)

	{

		return str_replace($this->l_delim.$key.$this->r_delim, $val, $string);

	}

	// --------------------------------------------------------------------

	/**

	 *  Parse a tag pair

	 *

	 * Parses tag pairs:  {some_tag} string... {/some_tag}

	 *

	 * @access	private

	 * @param	string

	 * @param	array

	 * @param	string

	 * @return	string

	 */

	function _parse_pair($variable, $data, $string)

	{

		if (FALSE === ($match = $this->_match_pair($string, $variable)))

		{

			return $string;

		}

		$str = '';

		foreach ($data as $row)

		{

			$temp = $match['1'];

			foreach ($row as $key => $val)

			{

				if ( ! is_array($val))

				{

					$temp = $this->_parse_single($key, $val, $temp);

				}

				else

				{

					$temp = $this->_parse_pair($key, $val, $temp);

				}

			}

			$str .= $temp;

		}

		return str_replace($match['0'], $str, $string);

	}

	// --------------------------------------------------------------------

	/**

	 *  Matches a variable pair

	 *

	 * @access	private

	 * @param	string

	 * @param	string

	 * @return	mixed

	 */

	function _match_pair($string, $variable)

	{

		if ( ! preg_match("|" . preg_quote($this->l_delim) . $variable . preg_quote($this->r_delim) . "(.+?)". preg_quote($this->l_delim) . '/' . $variable . preg_quote($this->r_delim) . "|s", $string, $match))

		{

			return FALSE;

		}

		return $match;

	}

}

// END Parser Class

/* End of file Parser.php */

/* Location: ./system/libraries/Parser.php */