implemented escapeLike() and modifiers %~like, %like~, %~like~

dibi/drivers/mssql.php

@@ -230,6 +230,20 @@ class DibiMsSqlDriver extends DibiObject implements IDibiDriver, IDibiResultDriv
 
 
 
+	/**
+	 * Encodes string for use in a LIKE statement.
+	 * @param  string
+	 * @param  int
+	 * @return string
+	 */
+	public function escapeLike($value, $pos)
+	{
+		$value = strtr($value, array("'" => "''", '%' => '[%]', '_' => '[_]', '[' => '[[]'));
+		return ($pos <= 0 ? "'%" : "'") . $value . ($pos >= 0 ? "%'" : "'");
+	}
+
+
+
 	/**
 	 * Decodes data from result set.
 	 * @param  string    value