crush/internal/filepathext/filepath.go

package filepathext

import (
	"path/filepath"
	"runtime"
	"strings"
)

// SmartJoin joins two paths, treating the second path as absolute if it is an
// absolute path.
func SmartJoin(one, two string) string {
	if SmartIsAbs(two) {
		return two
	}
	return filepath.Join(one, two)
}

// SmartIsAbs checks if a path is absolute, considering both OS-specific and
// Unix-style paths.
func SmartIsAbs(path string) bool {
	switch runtime.GOOS {
	case "windows":
		return filepath.IsAbs(path) || strings.HasPrefix(filepath.ToSlash(path), "/")
	default:
		return filepath.IsAbs(path)
	}
}