NSDataByteArray.kt

import kotlinx.cinterop.memScoped
import kotlinx.cinterop.allocArrayOf
import kotlinx.cinterop.addressOf
import kotlinx.cinterop.usePinned
import platform.Foundation.NSData
import platform.Foundation.create
import platform.posix.memcpy

public fun ByteArray.toData(): NSData = memScoped {
    NSData.create(bytes = allocArrayOf(this@toData),
        length = this@toData.size.toULong())
}

public fun NSData.toByteArray(): ByteArray = ByteArray(this@toByteArray.length.toInt()).apply {
    usePinned {
        memcpy(it.addressOf(0), this@toByteArray.bytes, this@toByteArray.length)
    }
}