Replace Python launcher with native Go UI

2026-09-03 11:43:21 -04:00
parent 0d4daeb45a
commit afd4148e9a
14 changed files with 2428 additions and 961 deletions
@@ -0,0 +1,156 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"syscall"
+	"time"
+)
+
+func initialize_paths(paths Paths) error {
+	if err := os.MkdirAll(paths.ConfigDir, 0700); err != nil {
+		return fmt.Errorf("create configuration directory: %w", err)
+	}
+	if err := os.MkdirAll(paths.CacheDir, 0700); err != nil {
+		return fmt.Errorf("create cache directory: %w", err)
+	}
+	logHandle, err := os.OpenFile(paths.LogFile, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, 0600)
+	if err != nil {
+		return fmt.Errorf("initialize launcher log: %w", err)
+	}
+	if err := logHandle.Chmod(0600); err != nil {
+		logHandle.Close()
+		return fmt.Errorf("protect launcher log: %w", err)
+	}
+	if err := logHandle.Close(); err != nil {
+		return fmt.Errorf("initialize launcher log: %w", err)
+	}
+	return nil
+}
+
+func write_private_file(path string, writeContent func(io.Writer) error) error {
+	directory := filepath.Dir(path)
+	if err := os.MkdirAll(directory, 0700); err != nil {
+		return err
+	}
+	temporary, err := os.CreateTemp(directory, filepath.Base(path)+".tmp-")
+	if err != nil {
+		return err
+	}
+	temporaryPath := temporary.Name()
+	defer os.Remove(temporaryPath)
+	if err := temporary.Chmod(0600); err != nil {
+		temporary.Close()
+		return err
+	}
+	if err := writeContent(temporary); err != nil {
+		temporary.Close()
+		return err
+	}
+	if err := temporary.Sync(); err != nil {
+		temporary.Close()
+		return err
+	}
+	if err := temporary.Close(); err != nil {
+		return err
+	}
+	if err := os.Rename(temporaryPath, path); err != nil {
+		return err
+	}
+	directoryHandle, err := os.Open(directory)
+	if err == nil {
+		_ = directoryHandle.Sync()
+		_ = directoryHandle.Close()
+	}
+	return nil
+}
+
+func write_password_file(configDir, password string) (string, error) {
+	if strings.ContainsAny(password, "\r\n") {
+		return "", fmt.Errorf("password cannot contain line breaks")
+	}
+	if err := os.MkdirAll(configDir, 0700); err != nil {
+		return "", err
+	}
+	file, err := os.CreateTemp(configDir, ".password-")
+	if err != nil {
+		return "", err
+	}
+	path := file.Name()
+	failed := true
+	defer func() {
+		if failed {
+			_ = os.Remove(path)
+		}
+	}()
+	if err := file.Chmod(0600); err != nil {
+		file.Close()
+		return "", err
+	}
+	if _, err := io.WriteString(file, password); err != nil {
+		file.Close()
+		return "", err
+	}
+	if err := file.Sync(); err != nil {
+		file.Close()
+		return "", err
+	}
+	if err := file.Close(); err != nil {
+		return "", err
+	}
+	failed = false
+	return path, nil
+}
+
+func expand_user_path(path string) (string, error) {
+	if path != "~" && !strings.HasPrefix(path, "~/") {
+		return path, nil
+	}
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return "", err
+	}
+	if path == "~" {
+		return homeDir, nil
+	}
+	return filepath.Join(homeDir, strings.TrimPrefix(path, "~/")), nil
+}
+
+func run_external(ui *TerminalUI, command *exec.Cmd) error {
+	if err := command.Start(); err != nil {
+		return err
+	}
+	done := make(chan error, 1)
+	go func() {
+		done <- command.Wait()
+	}()
+	select {
+	case err := <-done:
+		if receivedSignal := ui.take_termination(); receivedSignal != nil {
+			return &terminalSignalError{signal: receivedSignal}
+		}
+		var exitError *exec.ExitError
+		if errors.As(err, &exitError) {
+			if status, ok := exitError.Sys().(syscall.WaitStatus); ok && status.Signaled() {
+				return &terminalSignalError{signal: status.Signal()}
+			}
+		}
+		return err
+	case receivedSignal := <-ui.termination:
+		_ = command.Process.Signal(receivedSignal)
+		timer := time.NewTimer(3 * time.Second)
+		defer timer.Stop()
+		select {
+		case <-done:
+		case <-timer.C:
+			_ = command.Process.Kill()
+			<-done
+		}
+		return &terminalSignalError{signal: receivedSignal}
+	}
+}