ci-bonfire / Sprint

system/libraries/Parser.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 49 and the first side effect is on line 38.

/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2015, British Columbia Institute of Technology
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * @package	CodeIgniter
 * @author	EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (http://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	http://codeigniter.com
 * @since	Version 1.0.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * Parser Class
 *
 * @package		CodeIgniter
 * @subpackage	Libraries
 * @category	Parser
 * @author		EllisLab Dev Team
 * @link		http://codeigniter.com/user_guide/libraries/parser.html
 */
class CI_Parser {

	/**
	 * Left delimiter character for pseudo vars
	 *
	 * @var string
	 */
	public $l_delim = '{';

	/**
	 * Right delimiter character for pseudo vars
	 *
	 * @var string
	 */
	public $r_delim = '}';

	/**
	 * Reference to CodeIgniter instance
	 *
	 * @var object
	 */
	protected $CI;

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

	/**
	 * Class constructor
	 *
	 * @return	void
	 */
	public function __construct()
	{
		$this->CI =& get_instance();
		log_message('info', 'Parser Class Initialized');
	}

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

	/**
	 * Parse a template
	 *
	 * Parses pseudo-variables contained in the specified template view,
	 * replacing them with the data in the second param
	 *
	 * @param	string
	 * @param	array
	 * @param	bool
	 * @return	string
	 */
	public function parse($template, $data, $return = FALSE)
	{
		$template = $this->CI->load->view($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
	 *
	 * @param	string
	 * @param	array
	 * @param	bool
	 * @return	string
	 */
	public 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
	 *
	 * @param	string
	 * @param	array
	 * @param	bool
	 * @return	string
	 */
	protected function _parse($template, $data, $return = FALSE)
	{
		if ($template === '')
		{
			return FALSE;
		}

		$replace = array();
		foreach ($data as $key => $val)
		{
			$replace = array_merge(
				$replace,
				is_array($val)
					? $this->_parse_pair($key, $val, $template)
					: $this->_parse_single($key, (string) $val, $template)
			);
		}

		unset($data);
		$template = strtr($template, $replace);

		if ($return === FALSE)
		{
			$this->CI->output->append_output($template);
		}

		return $template;
	}

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

	/**
	 * Set the left/right variable delimiters
	 *
	 * @param	string
	 * @param	string
	 * @return	void
	 */
	public function set_delimiters($l = '{', $r = '}')
	{
		$this->l_delim = $l;
		$this->r_delim = $r;
	}

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

	/**
	 * Parse a single key/value
	 *
	 * @param	string
	 * @param	string
	 * @param	string
	 * @return	string
	 */
	protected function _parse_single($key, $val, $string)
	{
		return array($this->l_delim.$key.$this->r_delim => (string) $val);
	}

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

	/**
	 * Parse a tag pair
	 *
	 * Parses tag pairs: {some_tag} string... {/some_tag}
	 *
	 * @param	string
	 * @param	array
	 * @param	string
	 * @return	string
	 */
	protected function _parse_pair($variable, $data, $string)
	{
		$replace = array();
		preg_match_all(
			'#'.preg_quote($this->l_delim.$variable.$this->r_delim).'(.+?)'.preg_quote($this->l_delim.'/'.$variable.$this->r_delim).'#s',
			$string,
			$matches,
			PREG_SET_ORDER
		);

		foreach ($matches as $match)
		{
			$str = '';
			foreach ($data as $row)
			{
				$temp = array();
				foreach ($row as $key => $val)
				{
					if (is_array($val))
					{
						$pair = $this->_parse_pair($key, $val, $match[1]);
						if ( ! empty($pair))
						{
							$temp = array_merge($temp, $pair);
						}

						continue;
					}

					$temp[$this->l_delim.$key.$this->r_delim] = $val;
				}

				$str .= strtr($match[1], $temp);
			}

			$replace[$match[0]] = $str;
		}

		return $replace;
	}

}