44 lines
756 B
Go
44 lines
756 B
Go
package txt
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// Year tries to find a matching year for a given string e.g. from a file oder directory name.
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func Year(s string) int {
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b := []byte(s)
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found := YearRegexp.FindAll(b, -1)
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for _, match := range found {
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year := Int(string(match))
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if year > YearMin && year < YearMax {
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return year
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}
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}
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return 0
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}
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// ExpandYear converts a string to a year and expands two-digit years if possible.
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func ExpandYear(s string) int {
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l := len(s)
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if l < 2 || l == 3 || l > 4 {
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return -1
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} else if !IsUInt(s) {
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return -1
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}
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year := Int(s)
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if l == 4 {
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return year
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} else if year >= 1 && year <= YearShort {
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year = year + 2000
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} else if year >= YearMinShort && year < 100 {
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year = year + 1900
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} else {
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return -1
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}
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return year
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}
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