termstatus: detect and respect dumb terminals on Unix

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
This commit is contained in:
Igor Fedorenko 2018-09-20 09:50:29 -04:00
parent 6bc99ce451
commit 541d232f1c

View file

@ -4,6 +4,7 @@ package termstatus
import (
"io"
"os"
"golang.org/x/sys/unix"
@ -24,7 +25,15 @@ func moveCursorUp(wr io.Writer, fd uintptr) func(io.Writer, uintptr, int) {
// canUpdateStatus returns true if status lines can be printed, the process
// output is not redirected to a file or pipe.
func canUpdateStatus(fd uintptr) bool {
return isatty.IsTerminal(fd)
if !isatty.IsTerminal(fd) {
return false
}
term := os.Getenv("TERM")
if term == "" {
return false
}
// TODO actually read termcap db and detect if terminal supports what we need
return term != "dumb"
}
// getTermSize returns the dimensions of the given terminal.