feat: add .read command (#145)

src/repl/handler.rs

@@ -3,6 +3,8 @@ use crate::config::SharedConfig;
 use crate::print_now;
 use crate::render::render_stream;
 use crate::utils::copy;
+use std::fs;
+use std::io::Read;
 
 use super::abort::SharedAbortSignal;
 
@@ -22,6 +24,7 @@ pub enum ReplCmd {
     StartConversation,
     EndConversatoin,
     Copy,
+    ReadFile(String),
 }
 
 #[allow(clippy::module_name_repetitions)]
@@ -105,6 +108,12 @@ impl ReplCmdHandler {
                 copy(&self.reply.borrow()).with_context(|| "Failed to copy the last output")?;
                 print_now!("\n");
             }
+            ReplCmd::ReadFile(file) => {
+                let mut contents = String::new();
+                let mut file = fs::File::open(file).expect("Unable to open file");
+                file.read_to_string(&mut contents).expect("Unable to read file");
+                self.handle(ReplCmd::Submit(contents))?;
+            }
         }
         Ok(())
     }

src/repl/mod.rs

@@ -17,7 +17,7 @@ use anyhow::{Context, Result};
 use reedline::Signal;
 use std::rc::Rc;
 
-pub const REPL_COMMANDS: [(&str, &str); 13] = [
+pub const REPL_COMMANDS: [(&str, &str); 14] = [
     (".info", "Print system-wide information"),
     (".set", "Modify the configuration temporarily"),
     (".model", "Choose a model"),
@@ -31,6 +31,7 @@ pub const REPL_COMMANDS: [(&str, &str); 13] = [
     (".clear history", "Clear the history"),
     (".help", "Print this help message"),
     (".exit", "Exit the REPL"),
+    (".read", "Read the contents of a file into the prompt"),
 ];
 
 impl Repl {
@@ -118,6 +119,10 @@ impl Repl {
                     Some(name) => handler.handle(ReplCmd::SetRole(name.to_string()))?,
                     None => print_now!("Usage: .role <name>\n\n"),
                 },
+                ".read" => match args {
+                    Some(file) => handler.handle(ReplCmd::ReadFile(file.to_string()))?,
+                    None => print_now!("Usage: .read <file name>\n\n"),
+                },
                 ".info" => {
                     handler.handle(ReplCmd::ViewInfo)?;
                 }