90 lines
3.0 KiB
Java
90 lines
3.0 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.emailcommon.internet;
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import com.android.emailcommon.TempDirectory;
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import com.android.emailcommon.mail.Body;
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import com.android.emailcommon.mail.MessagingException;
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import org.apache.commons.io.IOUtils;
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import android.util.Base64;
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import android.util.Base64OutputStream;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FilterInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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/**
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* A Body that is backed by a temp file. The Body exposes a getOutputStream method that allows
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* the user to write to the temp file. After the write the body is available via getInputStream
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* and writeTo one time. After writeTo is called, or the InputStream returned from
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* getInputStream is closed the file is deleted and the Body should be considered disposed of.
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*/
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public class BinaryTempFileBody implements Body {
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private File mFile;
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/**
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* An alternate way to put data into a BinaryTempFileBody is to simply supply an already-
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* created file. Note that this file will be deleted after it is read.
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* @param filePath The file containing the data to be stored on disk temporarily
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*/
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public void setFile(String filePath) {
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mFile = new File(filePath);
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}
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public OutputStream getOutputStream() throws IOException {
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mFile = File.createTempFile("body", null, TempDirectory.getTempDirectory());
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mFile.deleteOnExit();
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return new FileOutputStream(mFile);
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}
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public InputStream getInputStream() throws MessagingException {
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try {
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return new BinaryTempFileBodyInputStream(new FileInputStream(mFile));
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}
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catch (IOException ioe) {
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throw new MessagingException("Unable to open body", ioe);
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}
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}
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public void writeTo(OutputStream out) throws IOException, MessagingException {
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InputStream in = getInputStream();
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Base64OutputStream base64Out = new Base64OutputStream(
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out, Base64.CRLF | Base64.NO_CLOSE);
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IOUtils.copy(in, base64Out);
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base64Out.close();
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mFile.delete();
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}
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class BinaryTempFileBodyInputStream extends FilterInputStream {
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public BinaryTempFileBodyInputStream(InputStream in) {
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super(in);
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}
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@Override
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public void close() throws IOException {
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super.close();
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mFile.delete();
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}
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}
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}
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