[6785] | 1 | /**************************************************************** |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one * |
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| 3 | * or more contributor license agreements. See the NOTICE file * |
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| 4 | * distributed with this work for additional information * |
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| 5 | * regarding copyright ownership. The ASF licenses this file * |
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| 6 | * to you under the Apache License, Version 2.0 (the * |
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| 7 | * "License"); you may not use this file except in compliance * |
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| 8 | * with the License. You may obtain a copy of the License at * |
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| 9 | * * |
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| 10 | * http://www.apache.org/licenses/LICENSE-2.0 * |
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| 11 | * * |
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| 12 | * Unless required by applicable law or agreed to in writing, * |
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| 13 | * software distributed under the License is distributed on an * |
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| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * |
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| 15 | * KIND, either express or implied. See the License for the * |
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| 16 | * specific language governing permissions and limitations * |
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| 17 | * under the License. * |
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| 18 | ****************************************************************/ |
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| 19 | |
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| 20 | package org.apache.james.mime4j.message; |
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| 21 | |
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| 22 | import org.apache.james.mime4j.util.ByteSequence; |
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| 23 | import org.apache.james.mime4j.util.ContentUtil; |
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| 24 | |
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| 25 | /** |
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| 26 | * Represents a MIME multipart body (see RFC 2045).A multipart body has a |
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| 27 | * ordered list of body parts. The multipart body also has a preamble and |
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| 28 | * epilogue. The preamble consists of whatever characters appear before the |
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| 29 | * first body part while the epilogue consists of whatever characters come after |
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| 30 | * the last body part. |
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| 31 | */ |
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| 32 | public class MultipartImpl extends AbstractMultipart { |
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| 33 | |
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| 34 | private ByteSequence preamble; |
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| 35 | private transient String preambleStrCache; |
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| 36 | private transient boolean preambleComputed = false; |
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| 37 | private ByteSequence epilogue; |
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| 38 | private transient String epilogueStrCache; |
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| 39 | private transient boolean epilogueComputed = false; |
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| 40 | |
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| 41 | /** |
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| 42 | * Creates a new empty <code>Multipart</code> instance. |
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| 43 | */ |
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| 44 | public MultipartImpl(String subType) { |
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| 45 | super(subType); |
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| 46 | preamble = null; |
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| 47 | preambleStrCache = null; |
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| 48 | preambleComputed = true; |
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| 49 | epilogue = null; |
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| 50 | epilogueStrCache = null; |
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| 51 | epilogueComputed = true; |
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| 52 | } |
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| 53 | |
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| 54 | // package private for now; might become public someday |
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| 55 | public ByteSequence getPreambleRaw() { |
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| 56 | return preamble; |
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| 57 | } |
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| 58 | |
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| 59 | public void setPreambleRaw(ByteSequence preamble) { |
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| 60 | this.preamble = preamble; |
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| 61 | this.preambleStrCache = null; |
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| 62 | this.preambleComputed = false; |
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| 63 | } |
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| 64 | |
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| 65 | /** |
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| 66 | * Gets the preamble. |
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| 67 | * |
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| 68 | * @return the preamble. |
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| 69 | */ |
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| 70 | @Override |
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| 71 | public String getPreamble() { |
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| 72 | if (!preambleComputed) { |
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| 73 | preambleStrCache = preamble != null ? ContentUtil.decode(preamble) : null; |
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| 74 | preambleComputed = true; |
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| 75 | } |
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| 76 | return preambleStrCache; |
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| 77 | } |
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| 78 | |
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| 79 | /** |
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| 80 | * Sets the preamble. |
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| 81 | * |
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| 82 | * @param preamble |
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| 83 | * the preamble. |
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| 84 | */ |
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| 85 | @Override |
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| 86 | public void setPreamble(String preamble) { |
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| 87 | this.preamble = preamble != null ? ContentUtil.encode(preamble) : null; |
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| 88 | this.preambleStrCache = preamble; |
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| 89 | this.preambleComputed = true; |
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| 90 | } |
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| 91 | |
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| 92 | // package private for now; might become public someday |
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| 93 | public ByteSequence getEpilogueRaw() { |
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| 94 | return epilogue; |
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| 95 | } |
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| 96 | |
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| 97 | public void setEpilogueRaw(ByteSequence epilogue) { |
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| 98 | this.epilogue = epilogue; |
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| 99 | this.epilogueStrCache = null; |
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| 100 | this.epilogueComputed = false; |
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| 101 | } |
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| 102 | |
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| 103 | /** |
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| 104 | * Gets the epilogue. |
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| 105 | * |
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| 106 | * @return the epilogue. |
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| 107 | */ |
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| 108 | @Override |
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| 109 | public String getEpilogue() { |
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| 110 | if (!epilogueComputed) { |
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| 111 | epilogueStrCache = epilogue != null ? ContentUtil.decode(epilogue) : null; |
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| 112 | epilogueComputed = true; |
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| 113 | } |
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| 114 | return epilogueStrCache; |
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| 115 | } |
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| 116 | |
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| 117 | /** |
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| 118 | * Sets the epilogue. |
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| 119 | * |
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| 120 | * @param epilogue |
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| 121 | * the epilogue. |
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| 122 | */ |
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| 123 | @Override |
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| 124 | public void setEpilogue(String epilogue) { |
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| 125 | this.epilogue = epilogue != null ? ContentUtil.encode(epilogue) : null; |
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| 126 | this.epilogueStrCache = epilogue; |
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| 127 | this.epilogueComputed = true; |
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| 128 | } |
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| 129 | |
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| 130 | } |
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