| /**************************************************************** |
| * Licensed to the Apache Software Foundation (ASF) under one * |
| * or more contributor license agreements. See the NOTICE file * |
| * distributed with this work for additional information * |
| * regarding copyright ownership. The ASF licenses this file * |
| * to you 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.james.mime4j.field; |
| |
| import static java.time.temporal.ChronoField.DAY_OF_MONTH; |
| import static java.time.temporal.ChronoField.DAY_OF_WEEK; |
| import static java.time.temporal.ChronoField.HOUR_OF_DAY; |
| import static java.time.temporal.ChronoField.MILLI_OF_SECOND; |
| import static java.time.temporal.ChronoField.MINUTE_OF_HOUR; |
| import static java.time.temporal.ChronoField.MONTH_OF_YEAR; |
| import static java.time.temporal.ChronoField.OFFSET_SECONDS; |
| import static java.time.temporal.ChronoField.SECOND_OF_MINUTE; |
| import static java.time.temporal.ChronoField.YEAR; |
| |
| import java.text.ParsePosition; |
| import java.time.Instant; |
| import java.time.ZoneId; |
| import java.time.format.DateTimeFormatter; |
| import java.time.format.DateTimeFormatterBuilder; |
| import java.time.format.ResolverStyle; |
| import java.time.format.SignStyle; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.Locale; |
| import java.util.Map; |
| |
| import org.apache.james.mime4j.codec.DecodeMonitor; |
| import org.apache.james.mime4j.dom.FieldParser; |
| import org.apache.james.mime4j.dom.field.DateTimeField; |
| import org.apache.james.mime4j.stream.Field; |
| |
| /** |
| * Date-time field such as <code>Date</code> or <code>Resent-Date</code>. |
| */ |
| public class DateTimeFieldLenientImpl extends AbstractField implements DateTimeField { |
| private static final int INITIAL_YEAR = 1970; |
| public static final DateTimeFormatter RFC_5322 = new DateTimeFormatterBuilder() |
| .parseCaseInsensitive() |
| .parseLenient() |
| .optionalStart() |
| .appendText(DAY_OF_WEEK, dayOfWeek()) |
| .appendLiteral(", ") |
| .optionalEnd() |
| .appendValue(DAY_OF_MONTH, 1, 2, SignStyle.NOT_NEGATIVE) |
| .appendLiteral(' ') |
| .appendText(MONTH_OF_YEAR, monthOfYear()) |
| .appendLiteral(' ') |
| .appendValueReduced(YEAR, 2, 4, INITIAL_YEAR) |
| .appendLiteral(' ') |
| .appendValue(HOUR_OF_DAY, 2) |
| .appendLiteral(':') |
| .appendValue(MINUTE_OF_HOUR, 2) |
| .optionalStart() |
| .appendLiteral(':') |
| .appendValue(SECOND_OF_MINUTE, 2) |
| .optionalEnd() |
| .optionalStart() |
| .appendLiteral('.') |
| .appendValue(MILLI_OF_SECOND, 3) |
| .optionalEnd() |
| .optionalStart() |
| .appendLiteral(' ') |
| .appendOffset("+HHMM", "GMT") |
| .optionalEnd() |
| .optionalStart() |
| .appendLiteral(' ') |
| .appendOffsetId() |
| .optionalEnd() |
| .toFormatter() |
| .withZone(ZoneId.of("GMT")) |
| .withResolverStyle(ResolverStyle.LENIENT) |
| .withResolverFields(DAY_OF_MONTH, MONTH_OF_YEAR, YEAR, HOUR_OF_DAY, MINUTE_OF_HOUR, SECOND_OF_MINUTE, MILLI_OF_SECOND, OFFSET_SECONDS) |
| .withLocale(Locale.US); |
| |
| private static Map<Long, String> monthOfYear() { |
| HashMap<Long, String> result = new HashMap<>(); |
| result.put(1L, "Jan"); |
| result.put(2L, "Feb"); |
| result.put(3L, "Mar"); |
| result.put(4L, "Apr"); |
| result.put(5L, "May"); |
| result.put(6L, "Jun"); |
| result.put(7L, "Jul"); |
| result.put(8L, "Aug"); |
| result.put(9L, "Sep"); |
| result.put(10L, "Oct"); |
| result.put(11L, "Nov"); |
| result.put(12L, "Dec"); |
| return result; |
| } |
| |
| private static Map<Long, String> dayOfWeek() { |
| HashMap<Long, String> result = new HashMap<>(); |
| result.put(1L, "Mon"); |
| result.put(2L, "Tue"); |
| result.put(3L, "Wed"); |
| result.put(4L, "Thu"); |
| result.put(5L, "Fri"); |
| result.put(6L, "Sat"); |
| result.put(7L, "Sun"); |
| return result; |
| } |
| |
| private boolean parsed = false; |
| private Date date; |
| |
| private DateTimeFieldLenientImpl(Field rawField, DecodeMonitor monitor) { |
| super(rawField, monitor); |
| } |
| |
| public Date getDate() { |
| if (!parsed) { |
| parse(); |
| } |
| return date; |
| } |
| |
| private void parse() { |
| parsed = true; |
| date = null; |
| String body = getBody(); |
| if (body != null) { |
| body = body.trim(); |
| } |
| try { |
| date = Date.from(Instant.from(RFC_5322.parse(body, new ParsePosition(0)))); |
| } catch (Exception e) { |
| // Ignore |
| } |
| } |
| |
| public static final FieldParser<DateTimeField> PARSER = new FieldParser<DateTimeField>() { |
| |
| public DateTimeField parse(final Field rawField, final DecodeMonitor monitor) { |
| return new DateTimeFieldLenientImpl(rawField, monitor); |
| } |
| |
| }; |
| |
| } |