Ant example source code file (Message.java)

This example Ant source code file (Message.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

bufferedreader, file, filereader, filereader, io, ioexception, message, message, outputstreamwriter, printwriter, printwriter, projectcomponent, string, string, stringbuffer

The Message.java source code

/*
 *  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.tools.ant.taskdefs.email;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.PrintWriter;

import org.apache.tools.ant.ProjectComponent;

/**
 * Class representing an email message.
 *
 * @since Ant 1.5
 */
public class Message extends ProjectComponent {
    private File messageSource = null;
    private StringBuffer buffer = new StringBuffer();
    private String mimeType = "text/plain";
    private boolean specified = false;
    private String charset = null;

    /** Creates a new empty message  */
    public Message() {
    }


    /**
     * Creates a new message based on the given string
     *
     * @param text the message
     */
    public Message(String text) {
        addText(text);
    }


    /**
     * Creates a new message using the contents of the given file.
     *
     * @param file the source of the message
     */
    public Message(File file) {
        messageSource = file;
    }


    /**
     * Adds a textual part of the message
     *
     * @param text some text to add
     */
    public void addText(String text) {
        buffer.append(text);
    }


    /**
     * Sets the source file of the message
     *
     * @param src the source of the message
     */
    public void setSrc(File src) {
        this.messageSource = src;
    }


    /**
     * Sets the content type for the message
     *
     * @param mimeType a mime type e.g. "text/plain"
     */
    public void setMimeType(String mimeType) {
        this.mimeType = mimeType;
        specified = true;
    }


    /**
     * Returns the content type
     *
     * @return the mime type
     */
    public String getMimeType() {
        return mimeType;
    }


    /**
     * Prints the message onto an output stream
     *
     * @param ps The print stream to write to
     * @throws IOException if an error occurs
     */
    public void print(PrintStream ps)
         throws IOException {
        // We need character encoding aware printing here.
        // So, using PrintWriter over OutputStreamWriter instead of PrintStream
        PrintWriter out
            = charset != null ? new PrintWriter(new OutputStreamWriter(ps, charset))
                              : new PrintWriter(ps);
        if (messageSource != null) {
            // Read message from a file
            FileReader freader = new FileReader(messageSource);

            try {
                BufferedReader in = new BufferedReader(freader);
                String line = null;
                while ((line = in.readLine()) != null) {
                    out.println(getProject().replaceProperties(line));
                }
            } finally {
                freader.close();
            }
        } else {
            out.println(getProject().replaceProperties(buffer.substring(0)));
        }
        out.flush();
    }


    /**
     * Returns true if the mimeType has been set.
     *
     * @return false if the default value is in use
     */
    public boolean isMimeTypeSpecified() {
        return specified;
    }

    /**
     * Sets the character set of mail message.
     * Will be ignored if mimeType contains ....; Charset=... substring.
     * @param charset the character set name.
     * @since Ant 1.6
     */
    public void setCharset(String charset) {
      this.charset = charset;
    }
    /**
     * Returns the charset of mail message.
     *
     * @return Charset of mail message.
     * @since Ant 1.6
     */
    public String getCharset() {
      return charset;
    }
}