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Java example source code file (MIMEMessage.java)
The MIMEMessage.java Java example source code/* * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.xml.internal.org.jvnet.mimepull; import java.io.IOException; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.net.URLDecoder; import java.nio.ByteBuffer; import java.util.*; import java.util.logging.Level; import java.util.logging.Logger; /** * Represents MIME message. MIME message parsing is done lazily using a * pull parser. * * @author Jitendra Kotamraju */ public class MIMEMessage { private static final Logger LOGGER = Logger.getLogger(MIMEMessage.class.getName()); MIMEConfig config; private final InputStream in; private final List<MIMEPart> partsList; private final Map<String, MIMEPart> partsMap; private final Iterator<MIMEEvent> it; private boolean parsed; // true when entire message is parsed private MIMEPart currentPart; private int currentIndex; /** * @see MIMEMessage(InputStream, String, MIMEConfig) */ public MIMEMessage(InputStream in, String boundary) { this(in, boundary, new MIMEConfig()); } /** * Creates a MIME message from the content's stream. The content stream * is closed when EOF is reached. * * @param in MIME message stream * @param boundary the separator for parts(pass it without --) * @param config various configuration parameters */ public MIMEMessage(InputStream in, String boundary, MIMEConfig config) { this.in = in; this.config = config; MIMEParser parser = new MIMEParser(in, boundary, config); it = parser.iterator(); partsList = new ArrayList<MIMEPart>(); partsMap = new HashMap<String, MIMEPart>(); if (config.isParseEagerly()) { parseAll(); } } /** * Gets all the attachments by parsing the entire MIME message. Avoid * this if possible since it is an expensive operation. * * @return list of attachments. */ public List<MIMEPart> getAttachments() { if (!parsed) { parseAll(); } return partsList; } /** * Creates nth attachment lazily. It doesn't validate * if the message has so many attachments. To * do the validation, the message needs to be parsed. * The parsing of the message is done lazily and is done * while reading the bytes of the part. * * @param index sequential order of the part. starts with zero. * @return attachemnt part */ public MIMEPart getPart(int index) { LOGGER.log(Level.FINE, "index={0}", index); MIMEPart part = (index < partsList.size()) ? partsList.get(index) : null; if (parsed && part == null) { throw new MIMEParsingException("There is no "+index+" attachment part "); } if (part == null) { // Parsing will done lazily and will be driven by reading the part part = new MIMEPart(this); partsList.add(index, part); } LOGGER.log(Level.FINE, "Got attachment at index={0} attachment={1}", new Object[]{index, part}); return part; } /** * Creates a lazy attachment for a given Content-ID. It doesn't validate * if the message contains an attachment with the given Content-ID. To * do the validation, the message needs to be parsed. The parsing of the * message is done lazily and is done while reading the bytes of the part. * * @param contentId Content-ID of the part, expects Content-ID without <, > * @return attachemnt part */ public MIMEPart getPart(String contentId) { LOGGER.log(Level.FINE, "Content-ID={0}", contentId); MIMEPart part = getDecodedCidPart(contentId); if (parsed && part == null) { throw new MIMEParsingException("There is no attachment part with Content-ID = "+contentId); } if (part == null) { // Parsing is done lazily and is driven by reading the part part = new MIMEPart(this, contentId); partsMap.put(contentId, part); } LOGGER.log(Level.FINE, "Got attachment for Content-ID={0} attachment={1}", new Object[]{contentId, part}); return part; } // this is required for Indigo interop, it writes content-id without escaping private MIMEPart getDecodedCidPart(String cid) { MIMEPart part = partsMap.get(cid); if (part == null) { if (cid.indexOf('%') != -1) { try { String tempCid = URLDecoder.decode(cid, "utf-8"); part = partsMap.get(tempCid); } catch(UnsupportedEncodingException ue) { // Ignore it } } } return part; } /** * Parses the whole MIME message eagerly */ public final void parseAll() { while(makeProgress()) { // Nothing to do } } /** * Parses the MIME message in a pull fashion. * * @return * false if the parsing is completed. */ public synchronized boolean makeProgress() { if (!it.hasNext()) { return false; } MIMEEvent event = it.next(); switch(event.getEventType()) { case START_MESSAGE : LOGGER.log(Level.FINE, "MIMEEvent={0}", MIMEEvent.EVENT_TYPE.START_MESSAGE); break; case START_PART : LOGGER.log(Level.FINE, "MIMEEvent={0}", MIMEEvent.EVENT_TYPE.START_PART); break; case HEADERS : LOGGER.log(Level.FINE, "MIMEEvent={0}", MIMEEvent.EVENT_TYPE.HEADERS); MIMEEvent.Headers headers = (MIMEEvent.Headers)event; InternetHeaders ih = headers.getHeaders(); List<String> cids = ih.getHeader("content-id"); String cid = (cids != null) ? cids.get(0) : currentIndex+""; if (cid.length() > 2 && cid.charAt(0)=='<') { cid = cid.substring(1,cid.length()-1); } MIMEPart listPart = (currentIndex < partsList.size()) ? partsList.get(currentIndex) : null; MIMEPart mapPart = getDecodedCidPart(cid); if (listPart == null && mapPart == null) { currentPart = getPart(cid); partsList.add(currentIndex, currentPart); } else if (listPart == null) { currentPart = mapPart; partsList.add(currentIndex, mapPart); } else if (mapPart == null) { currentPart = listPart; currentPart.setContentId(cid); partsMap.put(cid, currentPart); } else if (listPart != mapPart) { throw new MIMEParsingException("Created two different attachments using Content-ID and index"); } currentPart.setHeaders(ih); break; case CONTENT : LOGGER.log(Level.FINER, "MIMEEvent={0}", MIMEEvent.EVENT_TYPE.CONTENT); MIMEEvent.Content content = (MIMEEvent.Content)event; ByteBuffer buf = content.getData(); currentPart.addBody(buf); break; case END_PART : LOGGER.log(Level.FINE, "MIMEEvent={0}", MIMEEvent.EVENT_TYPE.END_PART); currentPart.doneParsing(); ++currentIndex; break; case END_MESSAGE : LOGGER.log(Level.FINE, "MIMEEvent={0}", MIMEEvent.EVENT_TYPE.END_MESSAGE); parsed = true; try { in.close(); } catch(IOException ioe) { throw new MIMEParsingException(ioe); } break; default : throw new MIMEParsingException("Unknown Parser state = "+event.getEventType()); } return true; } } Other Java examples (source code examples)Here is a short list of links related to this Java MIMEMessage.java source code file: |
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