commit | 1985fd408d3608146ad3a05d792bccb521f9f6a4 | [log] [tgz] |
---|---|---|
author | Guillaume J. Charmes <git+guillaume@charmes.net> | Sat Oct 28 07:19:50 2023 -0700 |
committer | GitHub <noreply@github.com> | Sat Oct 28 07:19:50 2023 -0700 |
tree | f4a8d720578f397953103fcfd6ea0a0b8a231b73 | |
parent | 8042b227ecab217df70cd53d5acb05d894485102 [diff] | |
parent | 3abf458f02ea9f96d9c45f7e735aea501ae65ef8 [diff] |
Merge pull request #167 from sio/ioctl Avoid calls to (*os.File).Fd() and operations on raw file descriptor ints
Pty is a Go package for using unix pseudo-terminals.
go get github.com/creack/pty
Note that those examples are for demonstration purpose only, to showcase how to use the library. They are not meant to be used in any kind of production environment.
package main import ( "io" "os" "os/exec" "github.com/creack/pty" ) func main() { c := exec.Command("grep", "--color=auto", "bar") f, err := pty.Start(c) if err != nil { panic(err) } go func() { f.Write([]byte("foo\n")) f.Write([]byte("bar\n")) f.Write([]byte("baz\n")) f.Write([]byte{4}) // EOT }() io.Copy(os.Stdout, f) }
package main import ( "io" "log" "os" "os/exec" "os/signal" "syscall" "github.com/creack/pty" "golang.org/x/term" ) func test() error { // Create arbitrary command. c := exec.Command("bash") // Start the command with a pty. ptmx, err := pty.Start(c) if err != nil { return err } // Make sure to close the pty at the end. defer func() { _ = ptmx.Close() }() // Best effort. // Handle pty size. ch := make(chan os.Signal, 1) signal.Notify(ch, syscall.SIGWINCH) go func() { for range ch { if err := pty.InheritSize(os.Stdin, ptmx); err != nil { log.Printf("error resizing pty: %s", err) } } }() ch <- syscall.SIGWINCH // Initial resize. defer func() { signal.Stop(ch); close(ch) }() // Cleanup signals when done. // Set stdin in raw mode. oldState, err := term.MakeRaw(int(os.Stdin.Fd())) if err != nil { panic(err) } defer func() { _ = term.Restore(int(os.Stdin.Fd()), oldState) }() // Best effort. // Copy stdin to the pty and the pty to stdout. // NOTE: The goroutine will keep reading until the next keystroke before returning. go func() { _, _ = io.Copy(ptmx, os.Stdin) }() _, _ = io.Copy(os.Stdout, ptmx) return nil } func main() { if err := test(); err != nil { log.Fatal(err) } }