/**
* Escapes the specified token.
*
* @param token token
* @return escaped token
*/
public static byte[] escape(final byte[] token) {
final TokenBuilder tb = new TokenBuilder();
for (final byte t : token) {
if (t >= 0x20 && t <= 0x7e) tb.addByte(t);
else hex(tb, t);
}
return tb.finish();
}
/**
* Returns a URI encoded token.
*
* @param token token
* @param iri input
* @return encoded token
*/
public static byte[] uri(final byte[] token, final boolean iri) {
final TokenBuilder tb = new TokenBuilder();
for (final byte t : token) {
if (letterOrDigit(t) || contains(iri ? IRIRES : RES, t)) tb.addByte(t);
else hex(tb, t);
}
return tb.finish();
}
/**
* Adds the specified byte in hex code.
*
* @param tb token builder
* @param b byte to be added
*/
private static void hex(final TokenBuilder tb, final byte b) {
tb.add('%');
tb.addByte(HEX[(b & 0xFF) >> 4]);
tb.addByte(HEX[b & 0xFF & 15]);
}