rudimentary driver for computercraft peripherals: it emulates a computer that is the whole network and does not provide a lua context which may cause nullpointers. good enough to allow accessing cc disk drives and read/write floppies in them.

li/cil/oc/common/Proxy.scala

@@ -28,6 +28,7 @@ class Proxy {
     api.Driver.add(driver.RedstoneCard)
     api.Driver.add(driver.CommandBlock)
     api.Driver.add(driver.PowerSupply)
+    api.Driver.add(driver.Peripheral)
 
     MinecraftForge.EVENT_BUS.register(Computer)
     MinecraftForge.EVENT_BUS.register(network.Network)

li/cil/oc/server/component/Filesystem.scala

@@ -10,8 +10,8 @@ import scala.Some
 import scala.collection.mutable
 
 class FileSystem(val fileSystem: api.fs.FileSystem, var label: String) extends ManagedComponent {
-  val node = api.Network.newNode(this, Visibility.Neighbors).
-    withComponent("filesystem").
+  val node = api.Network.newNode(this, Visibility.Network).
+    withComponent("filesystem", Visibility.Neighbors).
     create()
 
   private val owners = mutable.Map.empty[String, mutable.Set[Int]]

li/cil/oc/server/component/Peripheral.scala

@@ -0,0 +1,86 @@
+package li.cil.oc.server.component
+
+import dan200.computer.api.{IMount, IWritableMount, IComputerAccess, IPeripheral}
+import li.cil.oc.api
+import li.cil.oc.api.network._
+import scala.collection.convert.WrapAsScala._
+import scala.collection.mutable
+
+class Peripheral(peripheral: IPeripheral) extends ManagedComponent with IComputerAccess {
+  val node = api.Network.newNode(this, Visibility.Network).
+    withComponent("peripheral").
+    create()
+
+  private val mounts = mutable.Map.empty[String, ManagedEnvironment]
+
+  // ----------------------------------------------------------------------- //
+
+  @LuaCallback(value = "getType", asynchronous = true)
+  def getType(context: Context, args: Arguments): Array[Object] =
+    result(peripheral.getType)
+
+  @LuaCallback(value = "getMethodNames", asynchronous = true)
+  def getMethodNames(context: Context, args: Arguments): Array[Object] =
+    peripheral.getMethodNames.map(_.asInstanceOf[AnyRef])
+
+  @LuaCallback(value = "callMethod", asynchronous = true)
+  def callMethod(context: Context, args: Arguments): Array[Object] = {
+    val method = args.checkInteger(0)
+    peripheral.callMethod(this, null, method, args.drop(1).map {
+      case x: Array[Byte] => new String(x, "UTF-8")
+      case x => x
+    }.toArray)
+  }
+
+  // ----------------------------------------------------------------------- //
+
+  override def onConnect(node: Node) {
+    super.onConnect(node)
+    if (node == this.node) {
+      peripheral.attach(this)
+    }
+  }
+
+  override def onDisconnect(node: Node) {
+    super.onDisconnect(node)
+    if (node == this.node) {
+      peripheral.detach(this)
+      for ((_, env) <- mounts) {
+        env.node.remove()
+      }
+    }
+  }
+
+  // ----------------------------------------------------------------------- //
+
+  def getID = -1
+
+  def getAttachmentName = node.address
+
+  def queueEvent(event: String, arguments: Array[AnyRef]) {
+    node.sendToReachable("computer.signal", Seq(event) ++ arguments: _*)
+  }
+
+  def mount(desiredLocation: String, mount: IMount) =
+    mountFileSystem(desiredLocation, api.FileSystem.fromComputerCraft(mount))
+
+  def mountWritable(desiredLocation: String, mount: IWritableMount) =
+    mountFileSystem(desiredLocation, api.FileSystem.fromComputerCraft(mount))
+
+  private def mountFileSystem(desiredLocation: String, fs: api.fs.FileSystem) =
+    if (!mounts.contains(desiredLocation)) {
+      val env = api.FileSystem.asManagedEnvironment(fs, desiredLocation)
+      env.node.asInstanceOf[Component].setVisibility(Visibility.Network)
+      node.connect(env.node)
+      mounts += desiredLocation -> env
+      desiredLocation
+    }
+    else null
+
+  def unmount(location: String) {
+    mounts.remove(location) match {
+      case Some(env) => env.node.remove()
+      case _ =>
+    }
+  }
+}

li/cil/oc/server/driver/Peripheral.scala

@@ -0,0 +1,20 @@
+package li.cil.oc.server.driver
+
+import dan200.computer.api.IPeripheral
+import li.cil.oc.api.driver
+import li.cil.oc.server.component
+import net.minecraft.world.World
+
+object Peripheral extends driver.Block {
+  def worksWith(world: World, x: Int, y: Int, z: Int) =
+    world.getBlockTileEntity(x, y, z) match {
+      case peripheral: IPeripheral => true
+      case _ => false
+    }
+
+  def createEnvironment(world: World, x: Int, y: Int, z: Int) =
+    world.getBlockTileEntity(x, y, z) match {
+      case peripheral: IPeripheral => new component.Peripheral(peripheral)
+      case _ => null
+    }
+}

li/cil/oc/server/fs/ComputerCraftFileSystem.scala

@@ -18,7 +18,7 @@ class ComputerCraftFileSystem(val mount: IMount) extends InputStreamFileSystem {
   override def list(path: String) = {
     val result = new java.util.ArrayList[String]
     mount.list(path, result)
-    result.toArray.asInstanceOf[Array[String]]
+    result.toArray.map(_.asInstanceOf[String])
   }
 
   override def size(path: String) = mount.getSize(path)