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// Copyright (c) 2019-2021, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package cli
import (
"os"
"strconv"
"golang.org/x/sys/unix"
)
func getColumns() int {
if columns := os.Getenv("COLUMNS"); columns != "" {
if n, err := strconv.ParseInt(columns, 10, 0); err == nil {
return int(n)
}
}
fd := int(os.Stdout.Fd())
if ws, err := unix.IoctlGetWinsize(fd, unix.TIOCGWINSZ); err == nil {
return int(ws.Col)
}
return 80
}
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