Stream Servers

/**
 * Remote input stream server for daemon communication
 * @param in The input stream to wrap and expose remotely
 * @param port RMI port for service communication (default: any free port)
 */
class RemoteInputStreamServer(
    val `in`: InputStream,
    port: Int = SOCKET_ANY_FREE_PORT
) : RemoteInputStream, UnicastRemoteObject(
    port,
    LoopbackNetworkInterface.clientLoopbackSocketFactory,
    LoopbackNetworkInterface.serverLoopbackSocketFactory
)

/**
 * Close the underlying input stream
 */
override fun close()

/**
 * Read up to specified number of bytes from the stream
 * @param length Maximum number of bytes to read
 * @return Byte array containing read data (may be shorter than requested)
 */
override fun read(length: Int): ByteArray

/**
 * Read a single byte from the stream
 * @return The byte value as an integer, or -1 if end of stream
 */
override fun read(): Int

import org.jetbrains.kotlin.daemon.client.RemoteInputStreamServer
import java.io.ByteArrayInputStream
import java.io.FileInputStream

// Create from file
val fileStream = FileInputStream("input.txt")
val remoteFileStream = RemoteInputStreamServer(fileStream)

// Create from byte array
val data = "Hello, Kotlin Daemon!".toByteArray()
val byteArrayStream = ByteArrayInputStream(data)
val remoteByteStream = RemoteInputStreamServer(byteArrayStream, port = 0)

// Use in daemon communication
try {
    // Read single bytes
    var byte = remoteByteStream.read()
    while (byte != -1) {
        print(byte.toChar())
        byte = remoteByteStream.read()
    }
    
    // Read chunks
    val buffer = remoteByteStream.read(1024)
    println("Read ${buffer.size} bytes: ${String(buffer)}")
    
} finally {
    remoteByteStream.close()
}

/**
 * Remote output stream server for daemon communication
 * @param out The output stream to wrap and expose remotely
 * @param port RMI port for service communication (default: any free port)
 */
class RemoteOutputStreamServer(
    val out: OutputStream,
    port: Int = SOCKET_ANY_FREE_PORT
) : RemoteOutputStream, UnicastRemoteObject(
    port,
    LoopbackNetworkInterface.clientLoopbackSocketFactory,
    LoopbackNetworkInterface.serverLoopbackSocketFactory
)

/**
 * Close the underlying output stream
 */
override fun close()

/**
 * Write byte array data to the stream
 * @param data Byte array to write
 * @param offset Starting offset in the data array
 * @param length Number of bytes to write
 */
override fun write(data: ByteArray, offset: Int, length: Int)

/**
 * Write a single byte to the stream
 * @param dataByte The byte value to write
 */
override fun write(dataByte: Int)

import org.jetbrains.kotlin.daemon.client.RemoteOutputStreamServer
import java.io.ByteArrayOutputStream
import java.io.FileOutputStream

// Create from file
val fileStream = FileOutputStream("output.txt")
val remoteFileStream = RemoteOutputStreamServer(fileStream)

// Create from byte array
val byteArrayStream = ByteArrayOutputStream()
val remoteByteStream = RemoteOutputStreamServer(byteArrayStream, port = 0)

try {
    // Write single bytes
    val message = "Hello, Kotlin!"
    message.forEach { char ->
        remoteByteStream.write(char.code)
    }
    
    // Write byte arrays
    val data = "\nSecond line".toByteArray()
    remoteByteStream.write(data, 0, data.size)
    
    // Get written data (for ByteArrayOutputStream)
    val writtenData = byteArrayStream.toByteArray()
    println("Written: ${String(writtenData)}")
    
} finally {
    remoteByteStream.close()
}

import org.jetbrains.kotlin.daemon.client.*
import java.io.*

class FileTransferService {
    fun transferFile(sourceFile: File, targetFile: File) {
        val inputStream = FileInputStream(sourceFile)
        val outputStream = FileOutputStream(targetFile)
        
        val remoteInput = RemoteInputStreamServer(inputStream)
        val remoteOutput = RemoteOutputStreamServer(outputStream)
        
        try {
            // Transfer data in chunks
            val buffer = ByteArray(8192)
            var totalBytes = 0
            
            while (true) {
                val chunk = remoteInput.read(buffer.size)
                if (chunk.isEmpty()) break
                
                remoteOutput.write(chunk, 0, chunk.size)
                totalBytes += chunk.size
            }
            
            println("Transferred $totalBytes bytes from ${sourceFile.name} to ${targetFile.name}")
            
        } finally {
            remoteInput.close()
            remoteOutput.close()
        }
    }
}

// Usage
val transferService = FileTransferService()
transferService.transferFile(File("source.txt"), File("target.txt"))

import org.jetbrains.kotlin.daemon.client.*
import java.io.*

class StreamCommunication {
    private val inputBuffer = ByteArrayInputStream("Command data".toByteArray())
    private val outputBuffer = ByteArrayOutputStream()
    
    fun setupCommunication(): Pair<RemoteInputStreamServer, RemoteOutputStreamServer> {
        val remoteInput = RemoteInputStreamServer(inputBuffer)
        val remoteOutput = RemoteOutputStreamServer(outputBuffer)
        
        return remoteInput to remoteOutput
    }
    
    fun sendCommand(command: String) {
        val data = command.toByteArray()
        val inputStream = ByteArrayInputStream(data)
        val remoteInput = RemoteInputStreamServer(inputStream)
        
        try {
            // Simulate reading command
            val readData = remoteInput.read(data.size)
            println("Command sent: ${String(readData)}")
        } finally {
            remoteInput.close()
        }
    }
    
    fun receiveResponse(): String {
        val response = outputBuffer.toByteArray()
        return String(response)
    }
}

val communication = StreamCommunication()
val (input, output) = communication.setupCommunication()

// Send data through streams
communication.sendCommand("compile MyClass.kt")
val response = communication.receiveResponse()
println("Response: $response")

class BufferedStreamServer {
    fun createBufferedInput(data: ByteArray, bufferSize: Int = 1024): RemoteInputStreamServer {
        val bufferedStream = BufferedInputStream(
            ByteArrayInputStream(data),
            bufferSize
        )
        return RemoteInputStreamServer(bufferedStream)
    }
    
    fun createBufferedOutput(output: OutputStream, bufferSize: Int = 1024): RemoteOutputStreamServer {
        val bufferedStream = BufferedOutputStream(output, bufferSize)
        return RemoteOutputStreamServer(bufferedStream)
    }
    
    fun processData(inputData: ByteArray): ByteArray {
        val outputStream = ByteArrayOutputStream()
        val remoteInput = createBufferedInput(inputData)
        val remoteOutput = createBufferedOutput(outputStream)
        
        try {
            // Process data in chunks
            while (true) {
                val chunk = remoteInput.read(512)
                if (chunk.isEmpty()) break
                
                // Transform data (example: uppercase)
                val transformedChunk = String(chunk).uppercase().toByteArray()
                remoteOutput.write(transformedChunk, 0, transformedChunk.size)
            }
            
            return outputStream.toByteArray()
            
        } finally {
            remoteInput.close()
            remoteOutput.close()
        }
    }
}

val server = BufferedStreamServer()
val input = "hello, world!".toByteArray()
val output = server.processData(input)
println("Processed: ${String(output)}") // "HELLO, WORLD!"

class StreamResourceManager {
    private val activeStreams = mutableListOf<AutoCloseable>()
    
    fun createManagedInputStream(inputStream: InputStream): RemoteInputStreamServer {
        val remoteStream = RemoteInputStreamServer(inputStream)
        activeStreams.add(remoteStream)
        return remoteStream
    }
    
    fun createManagedOutputStream(outputStream: OutputStream): RemoteOutputStreamServer {
        val remoteStream = RemoteOutputStreamServer(outputStream)
        activeStreams.add(remoteStream)
        return remoteStream
    }
    
    fun closeAllStreams() {
        activeStreams.forEach { stream ->
            try {
                stream.close()
            } catch (e: Exception) {
                println("Error closing stream: ${e.message}")
            }
        }
        activeStreams.clear()
    }
    
    fun withManagedStreams(block: (StreamResourceManager) -> Unit) {
        try {
            block(this)
        } finally {
            closeAllStreams()
        }
    }
}

// Usage with automatic resource management
StreamResourceManager().withManagedStreams { manager ->
    val input = manager.createManagedInputStream(
        FileInputStream("input.txt")
    )
    val output = manager.createManagedOutputStream(
        FileOutputStream("output.txt")
    )
    
    // Use streams...
    val data = input.read(1024)
    output.write(data, 0, data.size)
    
    // Streams are automatically closed
}