105 lines
1.9 KiB
Go
105 lines
1.9 KiB
Go
// +build !windows,!darwin,!js
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package zenutil
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import (
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"context"
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"os"
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"os/exec"
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"strconv"
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"syscall"
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)
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var tool, path string
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func init() {
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for _, tool = range [3]string{"qarma", "zenity", "matedialog"} {
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path, _ = exec.LookPath(tool)
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if path != "" {
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return
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}
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}
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tool = "zenity"
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}
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// Run is internal.
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func Run(ctx context.Context, args []string) ([]byte, error) {
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if Command && path != "" {
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if Timeout > 0 {
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args = append(args, "--timeout", strconv.Itoa(Timeout))
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}
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syscall.Exec(path, append([]string{tool}, args...), os.Environ())
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}
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if ctx != nil {
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out, err := exec.CommandContext(ctx, tool, args...).Output()
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if ctx.Err() != nil {
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err = ctx.Err()
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}
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return out, err
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}
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return exec.Command(tool, args...).Output()
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}
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// RunProgress is internal.
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func RunProgress(ctx context.Context, max int, args []string) (m *progressDialog, err error) {
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if Command && path != "" {
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if Timeout > 0 {
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args = append(args, "--timeout", strconv.Itoa(Timeout))
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}
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syscall.Exec(path, append([]string{tool}, args...), os.Environ())
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}
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cmd := exec.Command(tool, args...)
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pipe, err := cmd.StdinPipe()
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if err != nil {
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return nil, err
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}
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if err = cmd.Start(); err != nil {
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return nil, err
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}
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if ctx == nil {
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ctx = context.Background()
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}
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m = &progressDialog{
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done: make(chan struct{}),
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lines: make(chan string),
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percent: true,
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max: max,
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}
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go func() {
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err := cmd.Wait()
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select {
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case _, ok := <-m.lines:
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if !ok {
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err = nil
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}
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default:
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}
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if cerr := ctx.Err(); cerr != nil {
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err = cerr
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}
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m.err = err
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close(m.done)
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}()
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go func() {
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defer cmd.Process.Signal(syscall.SIGTERM)
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for {
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var line string
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select {
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case s, ok := <-m.lines:
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if !ok {
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return
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}
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line = s
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case <-ctx.Done():
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return
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}
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if _, err := pipe.Write([]byte(line + "\n")); err != nil {
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return
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}
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}
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}()
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return
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}
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