readAtMostTo
Removes at least 1, and up to byteCount bytes from this source and appends them to sink. Returns the number of bytes read, or -1 if this source is exhausted.
Parameters
sink
the destination to write the data from this source.
byteCount
the number of bytes to read.
Throws
when byteCount is negative.
when the source is closed.
Samples
import kotlinx.io.*
import kotlin.test.*
fun main() {
//sampleStart
val source = Buffer().also { it.write(byteArrayOf(1, 2, 3, 4, 5, 6)) }
val sink = Buffer()
val bytesRead = source.readAtMostTo(sink, 10) // read at most 10 bytes
assertEquals(6, bytesRead)
assertContentEquals(byteArrayOf(1, 2, 3, 4, 5, 6), sink.readByteArray())
//sampleEnd
}