Add 'external' and switch functions.

shard.yml

@@ -1,5 +1,5 @@
 name: ipc
-version: 0.1.2
+version: 0.2.0
 
 authors:
   - Philippe Pittoli <karchnu@karchnu.fr>
@@ -15,6 +15,6 @@ dependencies:
     branch: master
 
 libraries:
-  libipc: ">= 0.1.2"
+  libipc: ">= 0.2.0"
 
 license: ISC

src/bindings.cr

@@ -34,4 +34,18 @@ lib LibIPC
   fun close = ipc_close(Void*, LibC::UInt64T) : LibC::Int
   fun close_fd = ipc_close_fd(Void*, LibC::Int) : LibC::Int
   fun close_all = ipc_close_all(Void*) : LibC::Int
+
+  # Add a new external file descriptor.
+  # LibIPC won't automatically read the content.
+  fun external = ipc_add_external (Void*, LibC::Int) : LibC::Int
+
+  # Add a new switch (messages are automatically exchanged between these two file descriptors).
+  fun add_switch = ipc_add_switch (Void*, LibC::Int, LibC::Int) : LibC::Int
+
+  # Set IO callbacks for a file descriptor.
+  # Returned "char" is a cb_event_types enum.
+  # One of the callbacks can be "NULL" to keep the default callback, thus changing only input or output operations.
+  fun switch_callbacks = ipc_set_switch_callbacks (Void*, LibC::Int,
+    (LibC::Int, LibC::Char*, LibC::UInt64T* -> LibC::Char),
+    (LibC::Int, LibC::Char*, LibC::UInt64T  -> LibC::Char));
 end

src/high-level-bindings.cr

@@ -108,6 +108,26 @@ class IPC
     end
   end
 
+  def external(fd : LibC::Int)
+    if LibIPC.external(@context, fd) != 0
+      raise "Oh noes, 'external' iz brkn"
+    end
+  end
+
+  def add_switch(fd1 : LibC::Int, fd2 : LibC::Int)
+    if LibIPC.add_switch(@context, fd1, fd2) != 0
+      raise "Oh noes, 'add_switch' iz brkn"
+    end
+  end
+
+  def switch_callbacks(fd : LibC::Int,
+                       fn_in  : (LibC::Int, LibC::Char*, LibC::UInt64T* -> LibC::Char),
+                       fn_out : (LibC::Int, LibC::Char*, LibC::UInt64T  -> LibC::Char))
+    if LibIPC.switch_callbacks(@context, fd, fn_in, fn_out) != 0
+      raise "Oh noes, 'switch_callbacks' iz brkn"
+    end
+  end
+
   def wait : IPC::Event
     eventtype : UInt8 = 0
     index : LibC::UInt64T = 0