1 files changed, 103 insertions, 0 deletions
diff --git a/src/org/openintents/openpgp/util/ParcelFileDescriptorUtil.java b/src/org/openintents/openpgp/util/ParcelFileDescriptorUtil.java
new file mode 100644
index 00000000..58c62110
--- /dev/null
+++ b/src/org/openintents/openpgp/util/ParcelFileDescriptorUtil.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2014 Dominik Schürmann <dominik@dominikschuermann.de>
+ *               2013 Flow (http://stackoverflow.com/questions/18212152/transfer-inputstream-to-another-service-across-process-boundaries-with-parcelf)
+ *
+ * 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.openintents.openpgp.util;
+
+import android.os.ParcelFileDescriptor;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+public class ParcelFileDescriptorUtil {
+
+    public interface IThreadListener {
+        void onThreadFinished(final Thread thread);
+    }
+
+    public static ParcelFileDescriptor pipeFrom(InputStream inputStream, IThreadListener listener)
+            throws IOException {
+        ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
+        ParcelFileDescriptor readSide = pipe[0];
+        ParcelFileDescriptor writeSide = pipe[1];
+
+        // start the transfer thread
+        new TransferThread(inputStream, new ParcelFileDescriptor.AutoCloseOutputStream(writeSide),
+                listener)
+                .start();
+
+        return readSide;
+    }
+
+    public static ParcelFileDescriptor pipeTo(OutputStream outputStream, IThreadListener listener)
+            throws IOException {
+        ParcelFileDescriptor[] pipe = ParcelFileDescriptor.createPipe();
+        ParcelFileDescriptor readSide = pipe[0];
+        ParcelFileDescriptor writeSide = pipe[1];
+
+        // start the transfer thread
+        new TransferThread(new ParcelFileDescriptor.AutoCloseInputStream(readSide), outputStream,
+                listener)
+                .start();
+
+        return writeSide;
+    }
+
+    static class TransferThread extends Thread {
+        final InputStream mIn;
+        final OutputStream mOut;
+        final IThreadListener mListener;
+
+        TransferThread(InputStream in, OutputStream out, IThreadListener listener) {
+            super("ParcelFileDescriptor Transfer Thread");
+            mIn = in;
+            mOut = out;
+            mListener = listener;
+            setDaemon(true);
+        }
+
+        @Override
+        public void run() {
+            byte[] buf = new byte[1024];
+            int len;
+
+            try {
+                while ((len = mIn.read(buf)) > 0) {
+                    mOut.write(buf, 0, len);
+                }
+                mOut.flush(); // just to be safe
+            } catch (IOException e) {
+                //Log.e(OpenPgpApi.TAG, "TransferThread" + getId() + ": writing failed", e);
+            } finally {
+                try {
+                    mIn.close();
+                } catch (IOException e) {
+                    //Log.e(OpenPgpApi.TAG, "TransferThread" + getId(), e);
+                }
+                try {
+                    mOut.close();
+                } catch (IOException e) {
+                    //Log.e(OpenPgpApi.TAG, "TransferThread" + getId(), e);
+                }
+            }
+            if (mListener != null) {
+                //Log.d(OpenPgpApi.TAG, "TransferThread " + getId() + " finished!");
+                mListener.onThreadFinished(this);
+            }
+        }
+    }
+}
+\ No newline at end of file