/**
* Parses standard hex and sortable url safe base64
*
* @param s
* @param offset
* @param len
* @return
* @see TimeUUIDUtils#toSortableUrlSafeBase64(UUID)
*/
public static UUID parse(CharSequence s, int offset, int len) {
// if (!isValid(s, offset, len))
// throw new IllegalArgumentException("invalid TimeUUID ["
// + s.subSequence(offset, offset + len) + "]");
UUID retval = null;
if (len == 32) {
long msb = Hex.parseLong(s.subSequence(offset, offset + len));
long lsb = Hex.parseLong(s.subSequence(offset + 16, offset + 32));
retval = new UUID(msb, lsb);
} else if (len == 36) {
long msb = Hex.parseLong(s.subSequence(offset, offset + len));
long lsb = Hex.parseLong(s.subSequence(offset + 19, offset + 36));
retval = new UUID(msb, lsb);
} else if (len == 22) {
retval = TimeUUIDUtils.fromSortableUrlSafeBase64(s, offset);
}
if (retval == null) {
throw new IllegalArgumentException(
"String not in expected format [" + s.subSequence(offset, offset + len) + "]");
}
return retval;
}
/**
* Appends a String representation of this object to the given {@link Appendable} object.
*
* <p>For reasons I'll probably never understand, Sun has decided to have a number of I/O classes
* implement Appendable which forced them to destroy an otherwise nice and simple interface with
* {@link IOException}s.
*
* <p>I decided to ignore any possible IOExceptions in this method.
*
* @param a the Appendable object, may be <code>null</code>
* @return an Appendable object, defaults to a {@link StringBuilder} if <code>a</code> is <code>
* null</code>
*/
public Appendable toAppendable(Appendable a) {
Appendable out = a;
if (out == null) {
out = new StringBuilder(36);
}
try {
Hex.append(out, (int) (time >> 32)).append('-');
Hex.append(out, (short) (time >> 16)).append('-');
Hex.append(out, (short) time).append('-');
Hex.append(out, (short) (clockSeqAndNode >> 48)).append('-');
Hex.append(out, clockSeqAndNode, 12);
} catch (IOException ex) {
// What were they thinking?
}
return out;
}
/**
* Parses a textual representation of a UUID.
*
* <p>No validation is performed. If the {@link CharSequence} is shorter than 36 characters,
* {@link ArrayIndexOutOfBoundsException}s will be thrown.
*
* @param s the {@link CharSequence}, may not be <code>null</code>
*/
public UUID(CharSequence s) {
this(Hex.parseLong(s.subSequence(0, 18)), Hex.parseLong(s.subSequence(19, 36)));
}