From fde3881053377bd63d7ca08d0604e6ca87860b9c Mon Sep 17 00:00:00 2001
From: Jesse Luehrs <doy@tozt.net>
Date: Wed, 10 Nov 2021 14:06:31 -0500
Subject: wire up sending input to active process

---
 src/history.rs | 76 ++++++++++++++++++++++++++++++++++++++++++----------------
 1 file changed, 56 insertions(+), 20 deletions(-)

(limited to 'src/history.rs')

diff --git a/src/history.rs b/src/history.rs
index 128535b..3586a3c 100644
--- a/src/history.rs
+++ b/src/history.rs
@@ -1,4 +1,4 @@
-use async_std::io::ReadExt as _;
+use async_std::io::{ReadExt as _, WriteExt as _};
 use pty_process::Command as _;
 use textmode::Textmode as _;
 
@@ -24,37 +24,61 @@ impl History {
         let child = process
             .spawn_pty(Some(&pty_process::Size::new(24, 80)))
             .unwrap();
+        let (input_w, input_r) = async_std::channel::unbounded();
         let entry = crate::util::mutex(HistoryEntry::new(
             cmd,
             child.id().try_into().unwrap(),
+            input_w,
         ));
         let task_entry = async_std::sync::Arc::clone(&entry);
         let task_action = self.action.clone();
         async_std::task::spawn(async move {
             loop {
                 let mut buf = [0_u8; 4096];
-                match child.pty().read(&mut buf).await {
-                    Ok(bytes) => {
-                        task_entry.lock_arc().await.vt.process(&buf[..bytes]);
-                    }
-                    Err(e) => {
-                        if e.raw_os_error() != Some(libc::EIO) {
-                            eprintln!("pty read failed: {:?}", e);
+                let mut pty = child.pty();
+                let read = pty.read(&mut buf);
+                let write = input_r.recv();
+                match futures::future::select(read, write).await {
+                    futures::future::Either::Left((res, _)) => {
+                        match res {
+                            Ok(bytes) => {
+                                task_entry
+                                    .lock_arc()
+                                    .await
+                                    .vt
+                                    .process(&buf[..bytes]);
+                            }
+                            Err(e) => {
+                                if e.raw_os_error() != Some(libc::EIO) {
+                                    eprintln!("pty read failed: {:?}", e);
+                                }
+                                task_entry.lock_arc().await.running = false;
+                                task_action
+                                    .send(crate::state::Action::UpdateFocus(
+                                        crate::state::Focus::Readline,
+                                    ))
+                                    .await
+                                    .unwrap();
+                                break;
+                            }
                         }
-                        task_entry.lock_arc().await.running = false;
                         task_action
-                            .send(crate::state::Action::UpdateFocus(
-                                crate::state::Focus::Readline,
-                            ))
+                            .send(crate::state::Action::Render)
                             .await
                             .unwrap();
-                        break;
                     }
+                    futures::future::Either::Right((res, _)) => match res {
+                        Ok(bytes) => {
+                            pty.write(&bytes).await.unwrap();
+                        }
+                        Err(e) => {
+                            panic!(
+                                "failed to read from input channel: {}",
+                                e
+                            );
+                        }
+                    },
                 }
-                task_action
-                    .send(crate::state::Action::Render)
-                    .await
-                    .unwrap();
             }
         });
         self.entries.push(entry);
@@ -86,7 +110,6 @@ impl History {
                     .await
                     .unwrap();
             }
-            textmode::Key::Ctrl(_) => {}
             key => {
                 self.send_process_input(idx, &key.into_bytes())
                     .await
@@ -159,7 +182,14 @@ impl History {
         idx: usize,
         input: &[u8],
     ) -> anyhow::Result<()> {
-        todo!()
+        self.entries[idx]
+            .lock_arc()
+            .await
+            .input
+            .send(input.to_vec())
+            .await
+            .unwrap();
+        Ok(())
     }
 }
 
@@ -167,16 +197,22 @@ struct HistoryEntry {
     cmd: String,
     pid: nix::unistd::Pid,
     vt: vt100::Parser,
+    input: async_std::channel::Sender<Vec<u8>>,
     running: bool, // option end time
                    // start time
 }
 
 impl HistoryEntry {
-    fn new(cmd: &str, pid: i32) -> Self {
+    fn new(
+        cmd: &str,
+        pid: i32,
+        input: async_std::channel::Sender<Vec<u8>>,
+    ) -> Self {
         Self {
             cmd: cmd.into(),
             pid: nix::unistd::Pid::from_raw(pid),
             vt: vt100::Parser::new(24, 80, 0),
+            input,
             running: true,
         }
     }
-- 
cgit v1.2.3-54-g00ecf