103 lines
3.5 KiB
Java
103 lines
3.5 KiB
Java
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/*
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* Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
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* 2013 Flow (http://stackoverflow.com/questions/18212152/transfer-inputstream-to-another-service-across-process-boundaries-with-parcelf)
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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 org.openintents.openpgp.util;
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import android.os.ParcelFileDescriptor;
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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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public class ParcelFileDescriptorUtil {
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public interface IThreadListener {
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void onThreadFinished(final Thread thread);
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}
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public static ParcelFileDescriptor pipeFrom(InputStream inputStream, IThreadListener listener)
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throws IOException {
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ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
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ParcelFileDescriptor readSide = pipe[0];
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ParcelFileDescriptor writeSide = pipe[1];
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// start the transfer thread
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new TransferThread(inputStream, new ParcelFileDescriptor.AutoCloseOutputStream(writeSide),
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listener)
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.start();
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return readSide;
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}
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public static ParcelFileDescriptor pipeTo(OutputStream outputStream, IThreadListener listener)
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throws IOException {
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ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
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ParcelFileDescriptor readSide = pipe[0];
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ParcelFileDescriptor writeSide = pipe[1];
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// start the transfer thread
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new TransferThread(new ParcelFileDescriptor.AutoCloseInputStream(readSide), outputStream,
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listener)
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.start();
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return writeSide;
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}
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static class TransferThread extends Thread {
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final InputStream mIn;
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final OutputStream mOut;
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final IThreadListener mListener;
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TransferThread(InputStream in, OutputStream out, IThreadListener listener) {
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super("ParcelFileDescriptor Transfer Thread");
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mIn = in;
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mOut = out;
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mListener = listener;
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setDaemon(true);
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}
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@Override
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public void run() {
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byte[] buf = new byte[1024];
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int len;
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try {
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while ((len = mIn.read(buf)) > 0) {
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mOut.write(buf, 0, len);
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}
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mOut.flush(); // just to be safe
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} catch (IOException e) {
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//Log.e(OpenPgpApi.TAG, "TransferThread" + getId() + ": writing failed", e);
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} finally {
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try {
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mIn.close();
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} catch (IOException e) {
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//Log.e(OpenPgpApi.TAG, "TransferThread" + getId(), e);
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}
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try {
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mOut.close();
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} catch (IOException e) {
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//Log.e(OpenPgpApi.TAG, "TransferThread" + getId(), e);
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}
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}
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if (mListener != null) {
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//Log.d(OpenPgpApi.TAG, "TransferThread " + getId() + " finished!");
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mListener.onThreadFinished(this);
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}
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}
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}
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}
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