add command for protocols

src/flutclient.rs

@@ -10,7 +10,7 @@ use crate::{
     grid::{self, Flut},
     increment_counter,
     protocols::{BinaryParser, IOProtocol, Parser, Responder, TextParser},
-    set_pixel_rgba, Canvas, Color, Command, Coordinate, Protocol, Response,
+    set_pixel_rgba, Canvas, Color, Command, Coordinate, Protocol, ProtocolStatus, Response,
 };
 
 macro_rules! build_parser_type_enum {
@@ -36,6 +36,17 @@ macro_rules! build_parser_type_enum {
         }
 
         impl ParserTypes {
+            pub fn get_status() -> Vec<ProtocolStatus> {
+                let mut protos = Vec::new();
+                $(
+                    #[cfg(feature = $feat)]
+                    protos.push(ProtocolStatus::Enabled($feat));
+                    #[cfg(not(feature = $feat))]
+                    protos.push(ProtocolStatus::Disabled($feat));
+                )*
+                protos
+            }
+
             pub fn announce() {
                 $(
                     #[cfg(feature = $feat)]
@@ -88,6 +99,14 @@ where
         Ok(())
     }
 
+    async fn protocols_command(&mut self) -> io::Result<()> {
+        match_parser! {
+            parser: self.parser => parser.unparse(Response::Protocols(ParserTypes::get_status()), &mut self.writer).await?
+        };
+        self.writer.flush().await?;
+        Ok(())
+    }
+
     async fn size_command(&mut self, canvas: Canvas) -> io::Result<()> {
         let (x, y) = self.grids[canvas as usize].get_size();
         match_parser!(parser: self.parser => parser.unparse(
@@ -166,6 +185,7 @@ where
                     match parsed {
                         Ok(Command::Help) => self.help_command().await?,
                         Ok(Command::Size(canvas)) => self.size_command(canvas).await?,
+                        Ok(Command::Protocols) => self.protocols_command().await?,
                         Ok(Command::GetPixel(canvas, x, y)) => self.get_pixel_command(canvas, x, y).await?,
                         Ok(Command::SetPixel(canvas, x, y, color)) => self.set_pixel_command(canvas, x, y, &color),
                         Ok(Command::ChangeCanvas(canvas)) => {

src/lib.rs

@@ -68,6 +68,7 @@ pub enum Protocol {
 #[derive(Debug, PartialEq)]
 pub enum Command {
     Help,
+    Protocols,
     Size(Canvas),
     GetPixel(Canvas, Coordinate, Coordinate),
     SetPixel(Canvas, Coordinate, Coordinate, Color),