photoprism/pkg/sanitize/token.go

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package sanitize
import (
"strings"
)
// Token removes invalid character from a token string.
func Token(s string) string {
if s == "" || reject(s, 200) {
return ""
}
// Remove all invalid characters.
s = strings.Map(func(r rune) rune {
if (r < '0' || r > '9') && (r < 'a' || r > 'z') && (r < 'A' || r > 'Z') && r != '-' && r != '_' && r != ':' {
return -1
}
return r
}, s)
return s
}