| /**************************************************************** |
| * 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 java.util.Locale; |
| |
| import org.apache.james.mime4j.codec.DecodeMonitor; |
| import org.apache.james.mime4j.dom.FieldParser; |
| import org.apache.james.mime4j.dom.field.ContentTransferEncodingField; |
| import org.apache.james.mime4j.stream.Field; |
| import org.apache.james.mime4j.util.MimeUtil; |
| |
| /** |
| * Represents a <code>Content-Transfer-Encoding</code> field. |
| */ |
| public class ContentTransferEncodingFieldImpl extends AbstractField implements ContentTransferEncodingField { |
| |
| private boolean parsed = false; |
| private String encoding; |
| |
| ContentTransferEncodingFieldImpl(Field rawField, DecodeMonitor monitor) { |
| super(rawField, monitor); |
| } |
| |
| private void parse() { |
| parsed = true; |
| String body = getBody(); |
| if (body != null) { |
| encoding = body.trim().toLowerCase(Locale.US); |
| } else { |
| encoding = null; |
| } |
| } |
| |
| /** |
| * @see org.apache.james.mime4j.dom.field.ContentTransferEncodingField#getEncoding() |
| */ |
| public String getEncoding() { |
| if (!parsed) { |
| parse(); |
| } |
| return encoding; |
| } |
| |
| /** |
| * Gets the encoding of the given field if. Returns the default |
| * <code>7bit</code> if not set or if <code>f</code> is |
| * <code>null</code>. |
| * |
| * @return the encoding. |
| */ |
| public static String getEncoding(ContentTransferEncodingField f) { |
| if (f != null && f.getEncoding().length() != 0) { |
| return f.getEncoding(); |
| } |
| return MimeUtil.ENC_7BIT; |
| } |
| |
| public static final FieldParser<ContentTransferEncodingField> PARSER = new FieldParser<ContentTransferEncodingField>() { |
| |
| public ContentTransferEncodingField parse(final Field rawField, final DecodeMonitor monitor) { |
| return new ContentTransferEncodingFieldImpl(rawField, monitor); |
| } |
| |
| }; |
| } |