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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.internet;
import android.util.Base64;
import android.util.Base64OutputStream;
import com.android.voicemail.impl.mail.Body;
import com.android.voicemail.impl.mail.MessagingException;
import com.android.voicemail.impl.mail.TempDirectory;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FilterInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.apache.commons.io.IOUtils;
/**
* A Body that is backed by a temp file. The Body exposes a getOutputStream method that allows the
* user to write to the temp file. After the write the body is available via getInputStream and
* writeTo one time. After writeTo is called, or the InputStream returned from getInputStream is
* closed the file is deleted and the Body should be considered disposed of.
*/
public class BinaryTempFileBody implements Body {
private File file;
/**
* An alternate way to put data into a BinaryTempFileBody is to simply supply an already- created
* file. Note that this file will be deleted after it is read.
*
* @param filePath The file containing the data to be stored on disk temporarily
*/
public void setFile(String filePath) {
file = new File(filePath);
}
public OutputStream getOutputStream() throws IOException {
file = File.createTempFile("body", null, TempDirectory.getTempDirectory());
file.deleteOnExit();
return new FileOutputStream(file);
}
@Override
public InputStream getInputStream() throws MessagingException {
try {
return new BinaryTempFileBodyInputStream(new FileInputStream(file));
} catch (IOException ioe) {
throw new MessagingException("Unable to open body", ioe);
}
}
@Override
public void writeTo(OutputStream out) throws IOException, MessagingException {
InputStream in = getInputStream();
Base64OutputStream base64Out = new Base64OutputStream(out, Base64.CRLF | Base64.NO_CLOSE);
IOUtils.copy(in, base64Out);
base64Out.close();
file.delete();
in.close();
}
class BinaryTempFileBodyInputStream extends FilterInputStream {
public BinaryTempFileBodyInputStream(InputStream in) {
super(in);
}
@Override
public void close() throws IOException {
super.close();
file.delete();
}
}
}
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