package main

// NumberingType controls the page numbering style rendered in the footer.
type NumberingType int

const (
	NumNone   NumberingType = iota // No page number (title page, declaration)
	NumRoman                       // Roman numerals for front matter (II, III, …)
	NumArabic                      // Arabic numerals for main body (1, 2, …)
)

// toRoman converts a positive integer to an uppercase Roman numeral string.
func toRoman(n int) string {
	if n <= 0 {
		return ""
	}
	vals := []int{1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1}
	syms := []string{"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"}
	result := ""
	for i, v := range vals {
		for n >= v {
			n -= v
			result += syms[i]
		}
	}
	return result
}