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Plan9 #1445

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56991d9
initial plan9 support
Jun 27, 2025
2554456
Finish plan 9 support. Depends on a pending commit to x/term.
Jun 30, 2025
2a61bcc
ci: build for plan9
andreynering Jul 1, 2025
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3 changes: 3 additions & 0 deletions .github/workflows/build.yml
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Original file line number Diff line number Diff line change
Expand Up @@ -17,3 +17,6 @@ jobs:
go-version: ""
go-version-file: ./examples/go.mod
working-directory: ./examples

build-plan9:
uses: charmbracelet/meta/.github/workflows/build-plan9.yml@main
12 changes: 12 additions & 0 deletions signals_plan9.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
package tea

import "time"

// listenForResize sends messages (or errors) when the terminal resizes.
// Argument output should be the file descriptor for the terminal; usually
// os.Stdout.
func (p *Program) listenForResize(done chan struct{}) {
for {
time.Sleep(100 * time.Second)
}
}
46 changes: 46 additions & 0 deletions tty_plan9.go
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@@ -0,0 +1,46 @@
package tea

import (
"fmt"
"log"
"os"
"path/filepath"

"github.com/charmbracelet/x/term"
)

func (p *Program) initInput() (err error) {
// Check if input is a terminal
if f, ok := p.input.(term.File); ok && term.IsTerminal(f.Fd()) {
p.ttyInput = f
p.previousTtyInputState, err = term.MakeRaw(p.ttyInput.Fd())
if err != nil {
return fmt.Errorf("error entering raw mode: %w", err)
}
}

if f, ok := p.output.(term.File); ok && term.IsTerminal(f.Fd()) {
p.ttyOutput = f
}

return nil
}

func openInputTTY() (*os.File, error) {
f, err := os.Open("/dev/cons")
if err != nil {
return nil, fmt.Errorf("could not open a new TTY: %w", err)
}
return f, nil
}

const suspendSupported = false

// Send SIGTSTP to the entire process group.
func suspendProcess() {
p := os.Getpid()
ctl := filepath.Join("proc", fmt.Sprintf("%d", p), "ctl")
if err := os.WriteFile(ctl, []byte("stop"), 0); err != nil {
log.Printf("Write sto to %q: %v", ctl, err)
}
}
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