laravel parser helper

parser-helper

<?php

namespace App\Helpers;

/**
 * Parser Class
 *
 * @package		Laravel
 * @subpackage	Libraries
 * @category	Parser
 * @author		Wagura Maurice
 * @link		https://gist.github.com/wagura-maurice/6f09fd9e9ea68bb6e4795d7afa9e8539.js
 */
class Parser {

	const _l = '{';
	const _r = '}';

	/**
	 * 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 static function parse_string($template, $data, $return = FALSE)
	{
		return Self::_parse($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 static function _parse($template, $data, $return = FALSE)
	{
		if ($template === '')
		{
			return FALSE;
		}

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

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

		return $template;
	}

	/**
	 * Parse a single key/value
	 *
	 * @param	string
	 * @param	string
	 * @param	string
	 * @return	string
	 */
	protected static function _parse_single($key, $val, $string)
	{
		return array(Self::_l.$key.Self::_r => (string) $val);
	}

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

	/**
	 * Parse a tag pair
	 *
	 * Parses tag pairs: {some_tag} string... {/some_tag}
	 *
	 * @param	string
	 * @param	array
	 * @param	string
	 * @return	string
	 */
	protected static function _parse_pair($variable, $data, $string)
	{
		$replace = array();
		preg_match_all(
			'#'.preg_quote(Self::_l.$variable.Self::_r).'(.+?)'.preg_quote(Self::_l.'/'.$variable.Self::_r).'#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))
					{
						$pair = Self::_parse_pair($key, $val, $match[1]);
						if ( ! empty($pair))
						{
							$temp = array_merge($temp, $pair);
						}

						continue;
					}

					$temp[Self::_l.$key.Self::_r] = $val;
				}

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

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

		return $replace;
	}

}