зеркало из https://github.com/mozilla/pjs.git
104 строки
3.2 KiB
Java
104 строки
3.2 KiB
Java
/* -*- Mode: java; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is the Grendel mail/news client.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1997
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* Netscape Communications Corporation. All Rights Reserved.
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*
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* Created: Jamie Zawinski <jwz@netscape.com>, 21 Aug 1997.
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*/
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package grendel.mime.parser;
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import grendel.mime.IMimeOperator;
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import grendel.mime.encoder.MimeEncoder;
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import grendel.mime.encoder.MimeBase64Decoder;
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import grendel.mime.encoder.MimeQuotedPrintableDecoder;
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import grendel.mime.encoder.MimeUUDecoder;
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import calypso.util.ByteBuf;
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import javax.mail.internet.InternetHeaders;
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import java.util.Enumeration;
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/** This abstract class represents the parsers for all MIME objects which are
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not containers for other MIME objects. The implication of this is that
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they are MIME types which can have Content-Transfer-Encodings applied to
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their data.
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@see MimeContainer
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*/
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class MimeLeaf extends MimeObject {
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MimeEncoder decoder = null;
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ByteBuf decoded = null;
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public MimeLeaf(String content_type, InternetHeaders headers) {
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super(content_type, headers);
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decoder = null;
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if (headers != null) {
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String enc[] = headers.getHeader("Content-Transfer-Encoding");
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String encoding = (enc == null || enc.length == 0 ? null : enc[0]);
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if (encoding == null)
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;
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else if (encoding.equalsIgnoreCase("base64"))
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decoder = new MimeBase64Decoder();
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else if (encoding.equalsIgnoreCase("quoted-printable"))
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decoder = new MimeQuotedPrintableDecoder();
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else if (encoding.equalsIgnoreCase("uuencode") ||
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encoding.equalsIgnoreCase("uue") ||
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encoding.equalsIgnoreCase("x-uuencode") ||
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encoding.equalsIgnoreCase("x-uue"))
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decoder = new MimeUUDecoder();
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}
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if (decoder != null)
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decoded = new ByteBuf();
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}
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public Enumeration children() { return null; }
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public void pushBytes(ByteBuf buffer) {
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if (decoder == null)
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// If there's no decoder, push the bytes through raw.
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operator.pushBytes(buffer);
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else {
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// If there is a decoder, decode them, and pus the result through.
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decoded.setLength(0);
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decoder.translate(buffer, decoded);
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operator.pushBytes(decoded);
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}
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}
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public void pushEOF() {
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if (decoder != null) {
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// If there is a decoder, tell it we're at EOF, and give it a chance
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// to spit out its last batch of buffered bytes. Then feed them
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// through to the operator.
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decoded.setLength(0);
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decoder.eof(decoded);
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if (decoded.length() != 0)
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operator.pushBytes(decoded);
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decoder = null;
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decoded = null;
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}
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super.pushEOF();
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}
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}
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