101 lines
1.8 KiB
Go
101 lines
1.8 KiB
Go
package main
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import (
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// "fmt"
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"bufio"
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"io"
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"os"
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"os/exec"
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"time"
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"fyne.io/fyne/v2"
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"fyne.io/fyne/v2/app"
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"fyne.io/fyne/v2/container"
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"fyne.io/fyne/v2/layout"
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"fyne.io/fyne/v2/widget"
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"github.com/creack/pty"
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)
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const MaxBufferSize = 16
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func main() {
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a := app.New()
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w := a.NewWindow("germ")
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ui := widget.NewTextGrid()
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os.Setenv("TERM", "dumb")
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c := exec.Command("/bin/bash")
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p, err := pty.Start(c)
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if err != nil {
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fyne.LogError("Failed to open pty", err)
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os.Exit(1)
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}
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defer c.Process.Kill()
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onTypedKey := func(key *fyne.KeyEvent) {
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if key.Name == fyne.KeyEnter || key.Name == fyne.KeyReturn {
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_, _ = p.Write([]byte{'\r'})
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}
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}
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onTypedRune := func(r rune) {
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p.Write([]byte(string(r)))
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}
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w.Canvas().SetOnTypedKey(onTypedKey)
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w.Canvas().SetOnTypedRune(onTypedRune)
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buffer := [][]rune{}
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reader := bufio.NewReader(p)
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// Goroutine that reads from pty
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go func() {
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line := []rune{}
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buffer = append(buffer, line)
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for {
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r, _, err := reader.ReadRune()
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if err != nil {
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if err == io.EOF {
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return
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}
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os.Exit(0)
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}
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line = append(line, r)
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buffer[len(buffer)-1] = line
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if r == '\n' {
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if len(buffer) > MaxBufferSize { // If the buffer is at capacity...
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buffer = buffer[1:] // ...pop the first line in the buffer
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}
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line = []rune{}
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buffer = append(buffer, line)
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}
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}
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}()
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// Goroutine that renders to UI
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go func() {
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for {
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time.Sleep(100 * time.Millisecond)
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ui.SetText("")
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var lines string
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for _, line := range buffer {
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lines = lines + string(line)
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}
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ui.SetText(string(lines))
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}
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}()
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// Create a new container with a wrapped layout
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// set the layout width to 420, height to 200
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w.SetContent(container.New(
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layout.NewGridWrapLayout(fyne.NewSize(900, 325)),
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ui,
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))
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w.ShowAndRun()
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} |