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/*
 * Copyright  2002,2004 The Apache Software Foundation
 *
 *  Licensed 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.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintStream;
import org.apache.tools.ant.BuildException;
import sun.misc.UUEncoder;

/**
 * An emailer that uuencodes attachments.
 *
 * @since Ant 1.5
 */
class UUMailer extends PlainMailer {
    protected void attach(File file, PrintStream out)
         throws IOException {
        if (!file.exists() || !file.canRead()) {
            throw new BuildException("File \"" + file.getName()
                 + "\" does not exist or is not "
                 + "readable.");
        }

        FileInputStream finstr = new FileInputStream(file);

        try {
            BufferedInputStream in = new BufferedInputStream(finstr);
            UUEncoder encoder = new UUEncoder(file.getName());

            encoder.encode(in, out);

        } finally {
            finstr.close();
        }
    }
}