Sebastian Unterschütz
28 lines
761 B
Go
28 lines
761 B
Go
package main
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// NumberingType controls the page numbering style rendered in the footer.
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type NumberingType int
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const (
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NumNone NumberingType = iota // No page number (title page, declaration)
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NumRoman // Roman numerals for front matter (II, III, …)
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NumArabic // Arabic numerals for main body (1, 2, …)
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)
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// toRoman converts a positive integer to an uppercase Roman numeral string.
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func toRoman(n int) string {
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if n <= 0 {
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return ""
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}
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vals := []int{1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1}
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syms := []string{"M", "CM", "D", "CD", "C", "XC", "L", "XL", "X", "IX", "V", "IV", "I"}
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result := ""
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for i, v := range vals {
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for n >= v {
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n -= v
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result += syms[i]
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}
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}
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return result
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}
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