<?php

/*
 * ObjTemplate.class.php - one-to-one object oriented template class
 * 
 * (c) 2001 Ondrej Jombik, member of Platon SDG, http://www.platon.sk/
 *
 * Download the latest version from
 * http://www.platon.sk/projects/ObjTemplate/
 */

class ObjTemplate
{

	var $filename;
	var $html;
	var $start_tag, $end_tag;


	function ObjTemplate($filename = '')
	{
		$this->filename = $filename;

		$this->set_tags();

		return $this->reload();
	}

	function set_tags($start_tag = '%', $end_tag = '%')
	{
		$this->start_tag = $start_tag;
		$this->end_tag = $end_tag;
	}

	function load($filename)
	{
		if (file_exists($filename)) {
			$this->html = join('', file($filename));

			$this->_set_file();
			return 1;
		}

		return 0;
	}

	function reload() 
	{
		if (isset($this->filename)) 
			return $this->load($this->filename);

		return 0;
	}

	function add_before($string)
	{
		$this->html = $string . $this->html;
	}

	function add_after($string) 
	{
		$this->html .= $string;
	}

	function set($key, $value = "")
	{
		if(gettype($key) == "array") {
			while ( list ($k, $v) = each ($key) ) {
				if (!(empty($k))) {
					/* Empty values are allowed. Empty Keys are NOT. */

					$this->set($k, $v);
				}
			}
		}
		else {

			$regexp = $this->start_tag . $key . 
				( isset($this->end_tag) ? $this->end_tag : '\b' );

			if (isset($value)) {
				$this->html = preg_replace("/$regexp/i", $value, $this->html); 
			}
		}

		$this->_set_file();
	}

	function _set_file()
	{
		$regexp = $this->start_tag . 'file:([^%\b]+)' . 
			( isset($this->end_tag) ? $this->end_tag : '\b' );

		while (preg_match("/$regexp/i", $this->html, $matches)){

			$filename = $matches[1]; 
			$filename_with_path = dirname($this->filename) . '/' . $filename;

			if (file_exists($filename_with_path)) {
				$value = join('', file($filename_with_path));
			}
			else {
				$value = "<!-- ObjTemplate.class.php: "
					."file not found: $filename_with_path -->";
			}

			$filename = addslashes($filename);

			$regexp2 = $this->start_tag . "file:$filename" . 
				( isset($this->end_tag) ? $this->end_tag : '\b' );
			$this->html = preg_replace("/$regexp2/i", $value, $this->html); 
		}

	}

	function is_key($key)
	{
		$regexp = $this->start_tag . $key . 
			( isset($this->end_tag) ? $this->end_tag : '\b' );

		return preg_match("/$regexp/i", $this->html);
	}

	function get_keys()
	{
		$regexp = $this->start_tag . '([\w][_\w\d]*)'. 
			( isset($this->end_tag) ? $this->end_tag : '\b' );

		preg_match_all("/$regexp/i", $this->html, $matches);

		return $matches[1];
	}

	function hide()
	{
		$regexp = $this->start_tag . '\w+';
		$regexp .= ( isset($this->end_tag) ? $this->end_tag : '\b' );

		$this->html = preg_replace("/($regexp)/i", 
				'<!-- ObjTemplate.class.php: hide: \\1 -->', $this->html); 

		return $this->html();
	}

	function clean()
	{
		$regexp = $this->start_tag . '\w+' . 
			( isset($this->end_tag) ? $this->end_tag : '\b' );

		$this->html = preg_replace("/$regexp/i", '', $this->html); 

		return $this->html();
	}

	function html()
	{
		return $this->html;
	}

	function html_array()
	{
		$regexp =  $this->start_tag . 'include:([^%\b]+)' . 
			( isset($this->end_tag) ? $this->end_tag : '\b' ) . '';

		preg_match_all("/$regexp/is", $this->html, $matches);

		return array(preg_split("/$regexp/is", $this->html), $matches[1]);
	}
}

?>