photoprism/pkg/txt/convert.go

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package txt
import (
"regexp"
"strings"
)
var UnknownCountryCode = "zz"
var CountryWordsRegexp = regexp.MustCompile("[\\p{L}]{2,}")
// CountryCode tries to find a matching country code for a given string e.g. from a file oder directory name.
func CountryCode(s string) (code string) {
code = UnknownCountryCode
if s == "" || s == UnknownCountryCode {
return code
}
words := CountryWordsRegexp.FindAllString(s, -1)
for i, w := range words {
if i < len(words)-1 {
search := strings.ToLower(w + " " + words[i+1])
if match, ok := Countries[search]; ok {
return match
}
}
search := strings.ToLower(w)
if match, ok := Countries[search]; ok {
code = match
}
}
return code
}