Control a Shell With pty-shell

Introducing pty-shell which is an extension of pty crate

Transcript

1. Control a Shell With pty-shell
   Rust of Us - Chapter 5
   2015-12-23
   @hibariya
   

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2. Hi, there.
   ● Hika Hibariya
   ● @hibariya
   ● hibariya.org
   

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3. pty
   

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4. pty: Fork With a New TTY
   https://github.com/hibariya/pty-rs
   ● pty::fork()
   ● Substitute of PTY.spawn
   

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5. pty: Fork With a New TTY
   

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6. It’s Not Enough
   My original purpose is to control STDIO of a
   shell process. To accomplish it, I have to do
   followings.
   ● Do exec a shell command (e.g. bash)
   ● Make parent process enter raw-mode
   ● Connect parent STDIO to child STDIO
   ● Notify winsize changes from parent to child
   

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7. pty-shell
   

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8. pty-shell: A Dedicated Extension For Shell
   

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9. pty-shell: Control STDIO of a Shell
   https://github.com/hibariya/pty-shell
   Spawns a new shell and connects to its parent’
   s STDIO. Then makes the parent act as proxy.
   Anyway, you can hook the INPUT/OUTPUT of
   a shell process. For example: you can play any
   sound effect and/or you can record or share
   output of the terminal.
   

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10. What To Use?
    For example: Terminal sharing tool
    https://github.com/idobata/hokaido
    

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11. Do Something On INPUT/OUTPUT
    

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12. Play Sound Effects
    

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13. Send Messages
    

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14. Record It
    

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15. Anything
    

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16. use pty;
    use pty_shell::{PtyProxy, PtyHandler};
    struct MyHandler;
    impl PtyHandler for MyHandler {
    fn input(&mut self, input: Vec) {
    // do something with input
    }
    fn output(&mut self, output: Vec) {
    // do something with output
    }
    }
    

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17. fn main() {
    let child = pty::fork().unwrap();
    child.exec("bash");
    child.proxy(MyHandler);
    child.wait();
    }
    

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18. extern crate pty_shell;
    

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