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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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 com.android.voicemail.impl.mail;
import android.util.Base64;
import android.util.Base64OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
public class Base64Body implements Body {
private final InputStream mSource;
// Because we consume the input stream, we can only write out once
private boolean mAlreadyWritten;
public Base64Body(InputStream source) {
mSource = source;
}
@Override
public InputStream getInputStream() throws MessagingException {
return mSource;
}
/**
* This method consumes the input stream, so can only be called once
*
* @param out Stream to write to
* @throws IllegalStateException If called more than once
* @throws IOException
* @throws MessagingException
*/
@Override
public void writeTo(OutputStream out)
throws IllegalStateException, IOException, MessagingException {
if (mAlreadyWritten) {
throw new IllegalStateException("Base64Body can only be written once");
}
mAlreadyWritten = true;
try {
final Base64OutputStream b64out = new Base64OutputStream(out, Base64.DEFAULT);
IOUtils.copyLarge(mSource, b64out);
} finally {
mSource.close();
}
}
}
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