value exprs

squirrel_client/src/main.rs

@@ -0,0 +1,38 @@
+use std::io;
+use std::io::{Read, Write};
+use std::net::TcpStream;
+
+fn main() {
+    match TcpStream::connect("localhost:5433") {
+        Ok(mut stream) => {
+            println!("Connected to Database");
+            loop {
+                print!("SQUIRREL: ");
+                io::stdout().flush().unwrap();
+
+                let mut msg_str = String::new();
+                let bytes = std::io::stdin().read_line(&mut msg_str).unwrap();
+                if bytes == 0 {
+                    break;
+                }
+                let msg = msg_str.as_bytes();
+
+                stream.write(msg).unwrap();
+
+                let mut response_size_buffer = [0 as u8; 8];
+                stream.read_exact(&mut response_size_buffer).unwrap();
+                let response_size: usize = usize::from_le_bytes(response_size_buffer);
+                let mut response_buffer = vec![0 as u8; response_size];
+                stream.read_exact(&mut response_buffer).unwrap();
+                println!(
+                    "{}",
+                    String::from_utf8(response_buffer).expect("a utf-8 string")
+                );
+            }
+        }
+        Err(e) => {
+            println!("Failed to connect: {}", e);
+        }
+    }
+    println!("Goodbye!");
+}