org.glassfish.grizzly.http.server.LegacyLocaleParser Maven / Gradle / Ivy
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package org.glassfish.grizzly.http.server;
import java.util.Locale;
class LegacyLocaleParser implements LocaleParser {
// ------------------------------------------------ Methods from LocalParser
@Override
public Locale parseLocale(String source) {
// Extract the language and country for this source
String language;
String country;
String variant;
int dash = source.indexOf('-');
if (dash < 0) {
language = source;
country = "";
variant = "";
} else {
language = source.substring(0, dash);
country = source.substring(dash + 1);
int vDash = country.indexOf('-');
if (vDash > 0) {
String cTemp = country.substring(0, vDash);
variant = country.substring(vDash + 1);
country = cTemp;
} else {
variant = "";
}
}
if (!isAlpha(language) || !isAlpha(country) || !isAlpha(variant)) {
return null;
}
return new Locale(language, country, variant);
}
// --------------------------------------------------------- Private Methods
/*
* @return true if the given string is composed of
* upper- or lowercase letters only, false otherwise.
*/
private static boolean isAlpha(String value) {
if (value == null) {
return false;
}
for (int i = 0; i < value.length(); i++) {
char c = value.charAt(i);
if (!((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))) {
return false;
}
}
return true;
}
}