51 lines
804 B
Go
51 lines
804 B
Go
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package termutil
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import (
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"errors"
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"os"
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"syscall"
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)
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var (
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consctl *os.File
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// Plan 9 doesn't have syscall.SIGQUIT
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unlockSignals = []os.Signal{
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os.Interrupt, syscall.SIGTERM, syscall.SIGKILL,
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}
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)
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// TerminalWidth returns width of the terminal.
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func TerminalWidth() (int, error) {
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return 0, errors.New("Not supported")
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}
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func lockEcho() error {
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if consctl != nil {
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return errors.New("consctl already open")
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}
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var err error
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consctl, err = os.OpenFile("/dev/consctl", os.O_WRONLY, 0)
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if err != nil {
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return err
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}
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_, err = consctl.WriteString("rawon")
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if err != nil {
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consctl.Close()
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consctl = nil
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return err
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}
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return nil
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}
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func unlockEcho() error {
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if consctl == nil {
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return nil
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}
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if err := consctl.Close(); err != nil {
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return err
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}
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consctl = nil
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return nil
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}
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