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lazygit/pkg/gui/pty.go
Jesse Duffield 1dd7307fde start moving commit panel handlers into controller
more

and more

move rebase commit refreshing into existing abstraction

and more

and more

WIP

and more

handling clicks

properly fix merge conflicts

update cheatsheet

lots more preparation to start moving things into controllers

WIP

better typing

expand on remotes controller

moving more code into controllers
2022-03-17 19:13:40 +11:00

82 lines
1.9 KiB
Go

//go:build !windows
// +build !windows
package gui
import (
"io"
"os/exec"
"strings"
"github.com/creack/pty"
"github.com/jesseduffield/gocui"
)
func (gui *Gui) desiredPtySize() *pty.Winsize {
width, height := gui.Views.Main.Size()
return &pty.Winsize{Cols: uint16(width), Rows: uint16(height)}
}
func (gui *Gui) onResize() error {
if gui.State.Ptmx == nil {
return nil
}
// TODO: handle resizing properly: we need to actually clear the main view
// and re-read the output from our pty. Or we could just re-run the original
// command from scratch
if err := pty.Setsize(gui.State.Ptmx, gui.desiredPtySize()); err != nil {
return err
}
return nil
}
// Some commands need to output for a terminal to active certain behaviour.
// For example, git won't invoke the GIT_PAGER env var unless it thinks it's
// talking to a terminal. We typically write cmd outputs straight to a view,
// which is just an io.Reader. the pty package lets us wrap a command in a
// pseudo-terminal meaning we'll get the behaviour we want from the underlying
// command.
func (gui *Gui) newPtyTask(view *gocui.View, cmd *exec.Cmd, prefix string) error {
width, _ := gui.Views.Main.Size()
pager := gui.git.Config.GetPager(width)
if pager == "" {
// if we're not using a custom pager we don't need to use a pty
return gui.newCmdTask(view, cmd, prefix)
}
cmdStr := strings.Join(cmd.Args, " ")
cmd.Env = append(cmd.Env, "GIT_PAGER="+pager)
_, height := view.Size()
_, oy := view.Origin()
manager := gui.getManager(view)
start := func() (*exec.Cmd, io.Reader) {
ptmx, err := pty.StartWithSize(cmd, gui.desiredPtySize())
if err != nil {
gui.c.Log.Error(err)
}
gui.State.Ptmx = ptmx
return cmd, ptmx
}
onClose := func() {
gui.State.Ptmx.Close()
gui.State.Ptmx = nil
}
if err := manager.NewTask(manager.NewCmdTask(start, prefix, height+oy+10, onClose), cmdStr); err != nil {
return err
}
return nil
}