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/*
* Copyright © 2019 The Android Password Authors. All Rights Reserved.
* SPDX-License-Identifier: LGPL-3.0-only WITH LGPL-3.0-linking-exception
*/
package me.msfjarvis.openpgpktx.util
import android.os.ParcelFileDescriptor
import android.os.ParcelFileDescriptor.AutoCloseInputStream
import android.os.ParcelFileDescriptor.AutoCloseOutputStream
import android.util.Log
import java.io.IOException
import java.io.InputStream
import java.io.OutputStream
internal object ParcelFileDescriptorUtil {
private const val TAG = "PFDUtils"
@Throws(IOException::class)
internal fun pipeFrom(inputStream: InputStream): ParcelFileDescriptor {
val pipe = ParcelFileDescriptor.createPipe()
val readSide = pipe[0]
val writeSide = pipe[1]
TransferThread(inputStream, AutoCloseOutputStream(writeSide))
.start()
return readSide
}
@Throws(IOException::class)
internal fun pipeTo(outputStream: OutputStream, output: ParcelFileDescriptor?): TransferThread {
val t = TransferThread(AutoCloseInputStream(output), outputStream)
t.start()
return t
}
internal class TransferThread(val `in`: InputStream, private val out: OutputStream) : Thread("IPC Transfer Thread") {
override fun run() {
val buf = ByteArray(4096)
var len: Int
try {
while (`in`.read(buf).also { len = it } > 0) {
out.write(buf, 0, len)
}
} catch (e: IOException) {
Log.e(TAG, "IOException when writing to out", e)
} finally {
try {
`in`.close()
} catch (ignored: IOException) {
}
try {
out.close()
} catch (ignored: IOException) {
}
}
}
init {
isDaemon = true
}
}
}
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