38 lines
1.3 KiB
Kotlin
38 lines
1.3 KiB
Kotlin
package com.aurora.extensions
|
|
|
|
import com.aurora.store.data.model.DownloadInfo
|
|
import kotlinx.coroutines.Dispatchers
|
|
import kotlinx.coroutines.flow.Flow
|
|
import kotlinx.coroutines.flow.flow
|
|
import kotlinx.coroutines.flow.flowOn
|
|
import java.io.InputStream
|
|
import java.io.OutputStream
|
|
import kotlin.concurrent.fixedRateTimer
|
|
|
|
fun InputStream.copyTo(out: OutputStream, streamSize: Long): Flow<DownloadInfo> {
|
|
return flow {
|
|
var bytesCopied: Long = 0
|
|
val buffer = ByteArray(DEFAULT_BUFFER_SIZE)
|
|
var bytes = read(buffer)
|
|
var lastTotalBytesRead: Long = 0
|
|
var speed: Long = 0
|
|
@Suppress("KotlinConstantConditions") // False-positive for bytesCopied always being zero
|
|
val timer = fixedRateTimer("timer", true, 0L, 1000) {
|
|
val totalBytesRead = bytesCopied
|
|
speed = totalBytesRead - lastTotalBytesRead
|
|
lastTotalBytesRead = totalBytesRead
|
|
}
|
|
|
|
while (bytes >= 0) {
|
|
out.write(buffer, 0, bytes)
|
|
out.flush()
|
|
|
|
bytesCopied += bytes
|
|
// Emit stream progress in percentage
|
|
emit(DownloadInfo((bytesCopied * 100 / streamSize).toInt(), bytes.toLong(), speed))
|
|
bytes = read(buffer)
|
|
}
|
|
timer.cancel()
|
|
}.flowOn(Dispatchers.IO)
|
|
}
|