Subversion-Projekte lars-tiefland.prado

<?php
/**
 * TSimpleDynamicParser class file.
 *
 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2008 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Id: TSimpleDynamicParser.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @package System.Data.SqlMap.Configuration
 */

/**
 * TSimpleDynamicParser finds place holders $name$ in the sql text and replaces
 * it with a TSimpleDynamicParser::DYNAMIC_TOKEN.
 *
 * @author Wei Zhuo <weizho[at]gmail[dot]com>
 * @version $Id: TSimpleDynamicParser.php 2541 2008-10-21 15:05:13Z qiang.xue $
 * @package System.Data.SqlMap.Configuration
 * @since 3.1
 */
class TSimpleDynamicParser
{
        const PARAMETER_TOKEN_REGEXP = '/\$([^\$]+)\$/';
        const DYNAMIC_TOKEN = '`!`';

        /**
         * Parse the sql text for dynamic place holders of the form $name$.
         * @param string Sql text.
         * @return array name value pairs 'sql' and 'parameters'.
         */
        public function parse($sqlText)
        {
                $matches = array();
                $mappings = array();
                preg_match_all(self::PARAMETER_TOKEN_REGEXP, $sqlText, $matches);
                for($i = 0, $k=count($matches[1]); $i<$k; $i++)
                {
                        $mappings[] = $matches[1][$i];
                        $sqlText = str_replace($matches[0][$i], self::DYNAMIC_TOKEN, $sqlText);
                }
                return array('sql'=>$sqlText, 'parameters'=>$mappings);
        }
}