<?php

/**
 * Package: YATC :: Yet Another Templating Class
 * File: yatc.php
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License 
 * as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * @author Robert Basic
 * @link http://basicdizajn.com/
 * @copyright 2008 Robert Basic
 * @package YATC
 * @version 0.0.2
 * 
 */

class YATC{
	
	/**
	 * Array of template files
	 *
	 * @var array
	 */
	
	var $tpl_file_array = array();
	
	/**
	 * Path to template file
	 *
	 * @var string
	 */
	
	var $tpl_file = "";
	
	/**
	 * Variables which are assigned to be inserted into the template
	 *
	 * @var mixed
	 */
	
	var $vars_to_insert = array();
	
	/**
	 * Left delimiter of the block in which assigned variable is inserted in.
	 *
	 * @var string
	 */
	
	var $dlm_left = "{#";
	
	/**
	 * Right delimiter of the block in which assigned variable is inserted in.
	 *
	 * @var string
	 */
	
	var $dlm_right = "#}";
	
	/**
	 * Total number of delimiters in $tpl_file template file.
	 *
	 * @var integer
	 */
	
	var $num_of_dlms = 0;
	
	/**
	 * Number of inserted variables into the template file.
	 *
	 * @var integer
	 */
	
	var $num_of_inserted_vars = 0;
	
	/**
	 * Show each template file from $tpl_file_array, file by file, line by line
	 *
	 */
	
	function show(){
		
		foreach ($this->tpl_file_array as $this->tpl_file) {
			
			if(file_exists($this->tpl_file)){
		
				$fp = fopen($this->tpl_file,'rb');
					
				while(!feof($fp)){
						
					$chunk = fgets($fp);
					$this->printLine($chunk);
						
				}
							
			}
			else{
				
				$this->error("No such template file. Make sure file exists. File: $this->tpl_file");
				
			}
		
		}
		
	}
	
	/**
	 * Prints out an error
	 *
	 * @param string $error_msg
	 */
	
	function error($error_msg){
		
		echo $error_msg;
		
	}
	
	/**
	 * Returns the number of variables that needs to be inserted into the template file
	 *
	 * @return integer
	 */
	
	function numOfVarsToInsert(){
		
		return count($this->vars_to_insert);
		
	}
	
	/**
	 * Returns number of left delimiters in one line
	 *
	 * @param string $line
	 * @return integer
	 */
	
	function numOfDlmsInOneLine($line){
		
		return substr_count($line,$this->dlm_left);
		
	}
	
	/**
	 * Calculates the total number of delimiters in the template file
	 *
	 * @return integer
	 */
	
	function numOfDlms(){
		
		$fp = fopen($this->tpl_file,'rb');
		
		$num = 0;
		
		while (!feof($fp)){
						
			$chunk = fgets($fp);
			$num += substr_count($chunk,$this->dlm_left);
			
		}
		
		fclose($fp);
		
		return $num;
		
	}
	
	/**
	 * Prints out each line, and if needed places the variable in the variable place
	 *
	 * @param string $line
	 */
	
	function printLine($line){
				
		$num_of_dlms_in_one_line = $this->numOfDlmsInOneLine($line);
		
		if($num_of_dlms_in_one_line>0){
		
			for($i=0;$i<$num_of_dlms_in_one_line;$i++){
			
				$from = strpos($line,$this->dlm_left);
				$to = strpos($line,$this->dlm_right);
				
				$replace = substr($line,$from,$to-$from+strlen($this->dlm_left));
				
				$line = str_replace($replace,$this->vars_to_insert[$this->num_of_inserted_vars],$line);
				
				$this->num_of_inserted_vars++;
				
			}
											
		}
		
		echo $line;
		
	}
	
}

?>