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<?php
/**
* TSimpleDynamicParser class file.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package Prado\Data\SqlMap\Configuration
*/
namespace Prado\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>
* @package Prado\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);
}
}
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