mirror of
https://github.com/restic/restic.git
synced 2024-12-27 10:17:58 +00:00
47 lines
1.2 KiB
Go
47 lines
1.2 KiB
Go
// +build !windows
|
|
|
|
package termstatus
|
|
|
|
import (
|
|
"io"
|
|
"os"
|
|
|
|
"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 {
|
|
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.
|
|
// 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
|
|
}
|