[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.MimeException; |
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| 23 | import org.apache.james.mime4j.codec.DecodeMonitor; |
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| 24 | import org.apache.james.mime4j.dom.Header; |
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| 25 | import org.apache.james.mime4j.dom.field.Field; |
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| 26 | import org.apache.james.mime4j.field.DefaultFieldParser; |
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| 27 | import org.apache.james.mime4j.parser.AbstractContentHandler; |
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| 28 | import org.apache.james.mime4j.stream.RawField; |
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| 29 | |
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| 30 | /** |
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| 31 | * Abstract implementation of ContentHandler that automates common |
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| 32 | * tasks. Currently performs header parsing. |
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| 33 | * |
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| 34 | * Older versions of this class performed decoding of content streams. |
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| 35 | * This can be now easily achieved by calling setContentDecoding(true) on the MimeStreamParser. |
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| 36 | */ |
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| 37 | public abstract class SimpleContentHandler extends AbstractContentHandler { |
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| 38 | |
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| 39 | private final DecodeMonitor monitor; |
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| 40 | |
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| 41 | public SimpleContentHandler(final DecodeMonitor monitor) { |
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| 42 | super(); |
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| 43 | this.monitor = monitor; |
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| 44 | } |
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| 45 | |
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| 46 | public SimpleContentHandler() { |
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| 47 | this(null); |
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| 48 | } |
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| 49 | |
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| 50 | /** |
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| 51 | * Called after headers are parsed. |
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| 52 | */ |
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| 53 | public abstract void headers(Header header); |
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| 54 | |
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| 55 | /* Implement introduced callbacks. */ |
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| 56 | |
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| 57 | private Header currHeader; |
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| 58 | |
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| 59 | /** |
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| 60 | * @see org.apache.james.mime4j.parser.AbstractContentHandler#startHeader() |
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| 61 | */ |
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| 62 | @Override |
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| 63 | public final void startHeader() { |
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| 64 | currHeader = new HeaderImpl(); |
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| 65 | } |
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| 66 | |
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| 67 | /** |
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| 68 | * @see org.apache.james.mime4j.parser.AbstractContentHandler#field(RawField) |
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| 69 | */ |
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| 70 | @Override |
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| 71 | public final void field(RawField field) throws MimeException { |
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| 72 | Field parsedField = DefaultFieldParser.parse(field.getRaw(), monitor); |
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| 73 | currHeader.addField(parsedField); |
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| 74 | } |
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| 75 | |
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| 76 | /** |
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| 77 | * @see org.apache.james.mime4j.parser.AbstractContentHandler#endHeader() |
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| 78 | */ |
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| 79 | @Override |
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| 80 | public final void endHeader() { |
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| 81 | Header tmp = currHeader; |
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| 82 | currHeader = null; |
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| 83 | headers(tmp); |
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| 84 | } |
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| 85 | |
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| 86 | } |
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