restic/internal/ui/termstatus/terminal_unix.go

39 lines
1.0 KiB
Go

// +build !windows
package termstatus
import (
"io"
"golang.org/x/sys/unix"
isatty "github.com/mattn/go-isatty"
)
// clearCurrentLine removes all characters from the current line and resets the
// cursor position to the first column.
func clearCurrentLine(wr io.Writer, fd uintptr) func(io.Writer, uintptr) {
return posixClearCurrentLine
}
// moveCursorUp moves the cursor to the line n lines above the current one.
func moveCursorUp(wr io.Writer, fd uintptr) func(io.Writer, uintptr, int) {
return posixMoveCursorUp
}
// 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)
}
// getTermSize returns the dimensions of the given terminal.
// the code is taken from "golang.org/x/crypto/ssh/terminal"
func getTermSize(fd uintptr) (width, height int, err error) {
ws, err := unix.IoctlGetWinsize(int(fd), unix.TIOCGWINSZ)
if err != nil {
return -1, -1, err
}
return int(ws.Col), int(ws.Row), nil
}