feat(ad_client) adding some initial methods

crates/ad_client/examples/demo.rs

@@ -0,0 +1,11 @@
+//! A simple demo of the client behaviour
+use ad_client::Client;
+use std::io;
+
+fn main() -> io::Result<()> {
+    let mut client = Client::new()?;
+    client.echo("hello, world!")?;
+    client.open("README.md")?;
+
+    Ok(())
+}

crates/ad_client/src/lib.rs

@@ -1,6 +1,6 @@
 //! A simple 9p based client for interacting with ad
 use ninep::client;
-use std::io;
+use std::{fmt, io};
 
 /// A simple 9p client for ad
 #[derive(Debug)]
@@ -15,8 +15,30 @@ impl Client {
         })
     }
 
-    /// Get the currently active buffer id
+    /// Get the currently active buffer id.
     pub fn current_buffer(&mut self) -> io::Result<String> {
         self.inner.read_str("buffers/current")
     }
+
+    fn _ctl(&mut self, command: &str, args: impl fmt::Display) -> io::Result<()> {
+        self.inner
+            .write("ctl", 0, format!("{command} {args}").as_bytes())?;
+
+        Ok(())
+    }
+
+    /// Echo a string message in the status line.
+    pub fn echo(&mut self, msg: impl fmt::Display) -> io::Result<()> {
+        self._ctl("echo", msg)
+    }
+
+    /// Open the requested file.
+    pub fn open(&mut self, path: impl Into<String>) -> io::Result<()> {
+        self._ctl("open", path.into())
+    }
+
+    /// Reload the currently active buffer.
+    pub fn reload_current_buffer(&mut self) -> io::Result<()> {
+        self._ctl("reload", "")
+    }
 }