001 /**************************************************************** 002 * Licensed to the Apache Software Foundation (ASF) under one * 003 * or more contributor license agreements. See the NOTICE file * 004 * distributed with this work for additional information * 005 * regarding copyright ownership. The ASF licenses this file * 006 * to you under the Apache License, Version 2.0 (the * 007 * "License"); you may not use this file except in compliance * 008 * with the License. You may obtain a copy of the License at * 009 * * 010 * http://www.apache.org/licenses/LICENSE-2.0 * 011 * * 012 * Unless required by applicable law or agreed to in writing, * 013 * software distributed under the License is distributed on an * 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * 015 * KIND, either express or implied. See the License for the * 016 * specific language governing permissions and limitations * 017 * under the License. * 018 ****************************************************************/ 019 020 package org.apache.james.mime4j.field; 021 022 import java.io.StringReader; 023 import java.util.Date; 024 025 import org.apache.commons.logging.Log; 026 import org.apache.commons.logging.LogFactory; 027 import org.apache.james.mime4j.field.datetime.parser.DateTimeParser; 028 import org.apache.james.mime4j.field.datetime.parser.ParseException; 029 import org.apache.james.mime4j.field.datetime.parser.TokenMgrError; 030 import org.apache.james.mime4j.util.ByteSequence; 031 032 /** 033 * Date-time field such as <code>Date</code> or <code>Resent-Date</code>. 034 */ 035 public class DateTimeField extends AbstractField { 036 private static Log log = LogFactory.getLog(DateTimeField.class); 037 038 private boolean parsed = false; 039 040 private Date date; 041 private ParseException parseException; 042 043 DateTimeField(String name, String body, ByteSequence raw) { 044 super(name, body, raw); 045 } 046 047 public Date getDate() { 048 if (!parsed) 049 parse(); 050 051 return date; 052 } 053 054 @Override 055 public ParseException getParseException() { 056 if (!parsed) 057 parse(); 058 059 return parseException; 060 } 061 062 private void parse() { 063 String body = getBody(); 064 065 try { 066 date = new DateTimeParser(new StringReader(body)).parseAll() 067 .getDate(); 068 } catch (ParseException e) { 069 if (log.isDebugEnabled()) { 070 log.debug("Parsing value '" + body + "': " + e.getMessage()); 071 } 072 parseException = e; 073 } catch (TokenMgrError e) { 074 if (log.isDebugEnabled()) { 075 log.debug("Parsing value '" + body + "': " + e.getMessage()); 076 } 077 parseException = new ParseException(e.getMessage()); 078 } 079 080 parsed = true; 081 } 082 083 static final FieldParser PARSER = new FieldParser() { 084 public ParsedField parse(final String name, final String body, 085 final ByteSequence raw) { 086 return new DateTimeField(name, body, raw); 087 } 088 }; 089 }