| /* |
| * Copyright 1999-2004 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.cocoon.woody.datatype.validationruleimpl; |
| |
| import org.apache.cocoon.woody.datatype.ValidationRule; |
| import org.apache.cocoon.woody.datatype.validationruleimpl.AbstractValidationRuleBuilder; |
| import org.apache.cocoon.woody.util.DomHelper; |
| import org.apache.oro.text.regex.Perl5Compiler; |
| import org.apache.oro.text.regex.Pattern; |
| import org.apache.oro.text.regex.MalformedPatternException; |
| import org.w3c.dom.Element; |
| |
| /** |
| * Builds {@link RegExpValidationRule}s. |
| * |
| * @version $Id: RegExpValidationRuleBuilder.java,v 1.4 2004/03/05 13:02:30 bdelacretaz Exp $ |
| */ |
| public class RegExpValidationRuleBuilder extends AbstractValidationRuleBuilder { |
| |
| public ValidationRule build(Element validationRuleElement) throws Exception { |
| RegExpValidationRule rule = new RegExpValidationRule(); |
| |
| String regexp = DomHelper.getAttribute(validationRuleElement, "pattern"); |
| buildFailMessage(validationRuleElement, rule); |
| |
| Perl5Compiler compiler = new Perl5Compiler(); |
| Pattern pattern = null; |
| try { |
| pattern = compiler.compile(regexp, Perl5Compiler.READ_ONLY_MASK); |
| } catch (MalformedPatternException e) { |
| throw new Exception("Invalid regular expression at " + DomHelper.getLocation(validationRuleElement) + ": " + e.getMessage()); |
| } |
| rule.setPattern(regexp, pattern); |
| |
| buildFailMessage(validationRuleElement, rule); |
| |
| return rule; |
| } |
| |
| } |