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- /* ====================================================================
- 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.poi.examples.hsmf;
-
- import java.io.File;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.OutputStream;
- import java.io.PrintWriter;
-
- import org.apache.poi.hsmf.MAPIMessage;
- import org.apache.poi.hsmf.datatypes.AttachmentChunks;
- import org.apache.poi.hsmf.exceptions.ChunkNotFoundException;
-
- /**
- * Reads one or several Outlook MSG files and for each of them creates
- * a text file from available chunks and a directory that contains
- * attachments.
- */
- @SuppressWarnings({"java:S106","java:S4823"})
- public class Msg2txt {
-
- /**
- * The stem used to create file names for the text file and the directory
- * that contains the attachments.
- */
- private String fileNameStem;
-
- /**
- * The Outlook MSG file being processed.
- */
- private MAPIMessage msg;
-
- public Msg2txt(String fileName) throws IOException {
- fileNameStem = fileName;
- if(fileNameStem.endsWith(".msg") || fileNameStem.endsWith(".MSG")) {
- fileNameStem = fileNameStem.substring(0, fileNameStem.length() - 4);
- }
- msg = new MAPIMessage(fileName);
- }
-
- /**
- * Processes the message.
- *
- * @throws IOException if an exception occurs while writing the message out
- */
- public void processMessage() throws IOException {
- String txtFileName = fileNameStem + ".txt";
- String attDirName = fileNameStem + "-att";
- try (PrintWriter txtOut = new PrintWriter(txtFileName, "UTF-8")) {
- try {
- String displayFrom = msg.getDisplayFrom();
- txtOut.println("From: " + displayFrom);
- } catch (ChunkNotFoundException e) {
- // ignore
- }
- try {
- String displayTo = msg.getDisplayTo();
- txtOut.println("To: " + displayTo);
- } catch (ChunkNotFoundException e) {
- // ignore
- }
- try {
- String displayCC = msg.getDisplayCC();
- txtOut.println("CC: " + displayCC);
- } catch (ChunkNotFoundException e) {
- // ignore
- }
- try {
- String displayBCC = msg.getDisplayBCC();
- txtOut.println("BCC: " + displayBCC);
- } catch (ChunkNotFoundException e) {
- // ignore
- }
- try {
- String subject = msg.getSubject();
- txtOut.println("Subject: " + subject);
- } catch (ChunkNotFoundException e) {
- // ignore
- }
- try {
- String body = msg.getTextBody();
- txtOut.println(body);
- } catch (ChunkNotFoundException e) {
- System.err.println("No message body");
- }
-
- AttachmentChunks[] attachments = msg.getAttachmentFiles();
- if (attachments.length > 0) {
- File d = new File(attDirName);
- if (d.mkdir()) {
- for (AttachmentChunks attachment : attachments) {
- processAttachment(attachment, d);
- }
- } else {
- System.err.println("Can't create directory " + attDirName);
- }
- }
- }
- }
-
- /**
- * Processes a single attachment: reads it from the Outlook MSG file and
- * writes it to disk as an individual file.
- *
- * @param attachment the chunk group describing the attachment
- * @param dir the directory in which to write the attachment file
- * @throws IOException when any of the file operations fails
- */
- public void processAttachment(AttachmentChunks attachment,
- File dir) throws IOException {
- String fileName = attachment.getAttachFileName().toString();
- if(attachment.getAttachLongFileName() != null) {
- fileName = attachment.getAttachLongFileName().toString();
- }
-
- File f = new File(dir, fileName);
- try (OutputStream fileOut = new FileOutputStream(f)) {
- fileOut.write(attachment.getAttachData().getValue());
- }
- }
-
- /**
- * Processes the list of arguments as a list of names of Outlook MSG files.
- *
- * @param args the list of MSG files to process
- */
- public static void main(String[] args) {
- if(args.length <= 0) {
- System.err.println("No files names provided");
- } else {
- for (String arg : args) {
- try {
- Msg2txt processor = new Msg2txt(arg);
- processor.processMessage();
- } catch (IOException e) {
- System.err.println("Could not process " + arg + ": " + e);
- }
- }
- }
- }
-
- }
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