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