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restic/internal/ui/termstatus/terminal_unix.go

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//go:build !windows
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// +build !windows
package termstatus
import (
"io"
"os"
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"golang.org/x/term"
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)
// 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
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}
// CanUpdateStatus returns true if status lines can be printed, the process
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// output is not redirected to a file or pipe.
func CanUpdateStatus(fd uintptr) bool {
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if !term.IsTerminal(int(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"
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}