mirror of https://github.com/octoleo/restic.git
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
// +build !windows
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package termstatus
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import (
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"io"
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"syscall"
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"unsafe"
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isatty "github.com/mattn/go-isatty"
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)
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// clearCurrentLine removes all characters from the current line and resets the
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// cursor position to the first column.
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func clearCurrentLine(wr io.Writer, fd uintptr) func(io.Writer, uintptr) {
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return posixClearCurrentLine
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}
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// moveCursorUp moves the cursor to the line n lines above the current one.
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func moveCursorUp(wr io.Writer, fd uintptr) func(io.Writer, uintptr, int) {
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return posixMoveCursorUp
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}
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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.
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func canUpdateStatus(fd uintptr) bool {
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return isatty.IsTerminal(fd)
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}
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// getTermSize returns the dimensions of the given terminal.
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// the code is taken from "golang.org/x/crypto/ssh/terminal"
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func getTermSize(fd uintptr) (width, height int, err error) {
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var dimensions [4]uint16
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if _, _, err := syscall.Syscall6(syscall.SYS_IOCTL, fd, uintptr(syscall.TIOCGWINSZ), uintptr(unsafe.Pointer(&dimensions)), 0, 0, 0); err != 0 {
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return -1, -1, err
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}
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return int(dimensions[1]), int(dimensions[0]), nil
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}
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