| // Copyright 2008 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.tapestry5.validator; |
| |
| import org.apache.tapestry5.Field; |
| import org.apache.tapestry5.MarkupWriter; |
| import org.apache.tapestry5.ValidationException; |
| import org.apache.tapestry5.ioc.MessageFormatter; |
| import org.apache.tapestry5.services.FormSupport; |
| |
| import java.util.regex.Pattern; |
| |
| /** |
| * A validator that checks if a given string is well-formed email address. This validator is not configurable. |
| */ |
| public class Email extends AbstractValidator<Void, String> |
| { |
| private static final String ATOM = "[^\\x00-\\x1F^\\(^\\)^\\<^\\>^\\@^\\,^\\;^\\:^\\\\^\\\"^\\.^\\[^\\]^\\s]"; |
| |
| private static final String DOMAIN = "(" + ATOM + "+(\\." + ATOM + "+)*"; |
| |
| private static final String IP_DOMAIN = "\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\]"; |
| |
| private static final Pattern PATTERN = Pattern |
| .compile("^" + ATOM + "+(\\." + ATOM + "+)*@" + DOMAIN + "|" + IP_DOMAIN + ")$", Pattern.CASE_INSENSITIVE); |
| |
| public Email() |
| { |
| super(null, String.class, "invalid-email"); |
| } |
| |
| public void render(Field field, Void constraintValue, MessageFormatter formatter, MarkupWriter markupWriter, |
| FormSupport formSupport) |
| { |
| } |
| |
| private String buildMessage(MessageFormatter formatter, Field field) |
| { |
| return formatter.format(field.getLabel()); |
| } |
| |
| public void validate(Field field, Void constraintValue, MessageFormatter formatter, String value) |
| throws ValidationException |
| { |
| if (!PATTERN.matcher(value).matches()) throw new ValidationException(buildMessage(formatter, field)); |
| } |
| } |