private boolean parseExtlangs(StringTokenIterator itr, ParseStatus sts) {
if (itr.isDone() || sts.isError()) {
return false;
}
boolean found = false;
while (!itr.isDone()) {
String s = itr.current();
if (!isExtlang(s)) {
break;
}
found = true;
if (extlangs.isEmpty()) {
extlangs = new ArrayList<>(3);
}
extlangs.add(s);
sts.parseLength = itr.currentEnd();
itr.next();
if (extlangs.size() == 3) {
// Maximum 3 extlangs
break;
}
}
return found;
}
private boolean parseRegion(StringTokenIterator itr, ParseStatus sts) {
if (itr.isDone() || sts.isError()) {
return false;
}
boolean found = false;
String s = itr.current();
if (isRegion(s)) {
found = true;
region = s;
sts.parseLength = itr.currentEnd();
itr.next();
}
return found;
}
private boolean parseExtensions(StringTokenIterator itr, ParseStatus sts) {
if (itr.isDone() || sts.isError()) {
return false;
}
boolean found = false;
while (!itr.isDone()) {
String s = itr.current();
if (isExtensionSingleton(s)) {
int start = itr.currentStart();
String singleton = s;
StringBuilder sb = new StringBuilder(singleton);
itr.next();
while (!itr.isDone()) {
s = itr.current();
if (isExtensionSubtag(s)) {
sb.append(SEP).append(s);
sts.parseLength = itr.currentEnd();
} else {
break;
}
itr.next();
}
if (sts.parseLength <= start) {
sts.errorIndex = start;
sts.errorMsg = "Incomplete extension '" + singleton + "'";
break;
}
if (extensions.isEmpty()) {
extensions = new ArrayList<>(4);
}
extensions.add(sb.toString());
found = true;
} else {
break;
}
}
return found;
}
private boolean parseVariants(StringTokenIterator itr, ParseStatus sts) {
if (itr.isDone() || sts.isError()) {
return false;
}
boolean found = false;
while (!itr.isDone()) {
String s = itr.current();
if (!isVariant(s)) {
break;
}
found = true;
if (variants.isEmpty()) {
variants = new ArrayList<>(3);
}
variants.add(s);
sts.parseLength = itr.currentEnd();
itr.next();
}
return found;
}
private boolean parsePrivateuse(StringTokenIterator itr, ParseStatus sts) {
if (itr.isDone() || sts.isError()) {
return false;
}
boolean found = false;
String s = itr.current();
if (isPrivateusePrefix(s)) {
int start = itr.currentStart();
StringBuilder sb = new StringBuilder(s);
itr.next();
while (!itr.isDone()) {
s = itr.current();
if (!isPrivateuseSubtag(s)) {
break;
}
sb.append(SEP).append(s);
sts.parseLength = itr.currentEnd();
itr.next();
}
if (sts.parseLength <= start) {
// need at least 1 private subtag
sts.errorIndex = start;
sts.errorMsg = "Incomplete privateuse";
} else {
privateuse = sb.toString();
found = true;
}
}
return found;
}