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readline
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main
utils_unix.go
83 строки
2 KB
Derick Rethans
Added 'os400' (#201)
18 апр 2022, 15:41
Не верифицирован
18 апр 2022, 15:41
c34436b
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// +build aix darwin dragonfly freebsd linux,!appengine netbsd openbsd os400 solaris package readline import ( "io" "os" "os/signal" "sync" "syscall" ) type winsize struct { Row uint16 Col uint16 Xpixel uint16 Ypixel uint16 } // SuspendMe use to send suspend signal to myself, when we in the raw mode. // For OSX it need to send to parent's pid // For Linux it need to send to myself func SuspendMe() { p, _ := os.FindProcess(os.Getppid()) p.Signal(syscall.SIGTSTP) p, _ = os.FindProcess(os.Getpid()) p.Signal(syscall.SIGTSTP) } // get width of the terminal func getWidth(stdoutFd int) int { cols, _, err := GetSize(stdoutFd) if err != nil { return -1 } return cols } func GetScreenWidth() int { w := getWidth(syscall.Stdout) if w < 0 { w = getWidth(syscall.Stderr) } return w } // ClearScreen clears the console screen func ClearScreen(w io.Writer) (int, error) { return w.Write([]byte("\033[H")) } func DefaultIsTerminal() bool { return IsTerminal(syscall.Stdin) && (IsTerminal(syscall.Stdout) || IsTerminal(syscall.Stderr)) } func GetStdin() int { return syscall.Stdin } // ----------------------------------------------------------------------------- var ( widthChange sync.Once widthChangeCallback func() ) func DefaultOnWidthChanged(f func()) { widthChangeCallback = f widthChange.Do(func() { ch := make(chan os.Signal, 1) signal.Notify(ch, syscall.SIGWINCH) go func() { for { _, ok := <-ch if !ok { break } widthChangeCallback() } }() }) }