private Response doOptions(Environment env) {
final Resource resource = resolveResource(env.pathInfo());
Message response = Response.successNoContent();
for (Method method : resource.supportedMethods()) {
response.headers().put(ALLOW, method.name());
}
for (ComplianceClass value : resource.davOptions()) {
response.headers().put(DAV, value.toString());
}
return response;
}
@Override
public final RequestLine parse(final ByteBuffer buffer) {
// mark the current position of the buffer
// if the parse is not complete, we will rewind to the mark()ed position
offset = buffer.position();
while (buffer.hasRemaining()) {
switch (stateStack.peek()) {
case METHOD:
byte c = buffer.get();
if (isTokenChar(c)) {
// valid char for HTTP method
continue;
} else if (c == ' ') {
int length = buffer.position() - offset;
String s =
new String(buffer.array(), buffer.arrayOffset() + offset, --length, US_ASCII);
this.method = Method.parse(s);
offset = buffer.position();
stateStack.pop();
} else {
throw new IllegalArgumentException(
String.format("Illegal character '%s' in %s", (char) c, stateStack.peek()));
}
break;
case REQUEST_URI:
switch (buffer.get()) {
case ' ':
int length = buffer.position() - offset;
String s =
new String(buffer.array(), buffer.arrayOffset() + offset, --length, US_ASCII);
try {
this.url = URLDecoder.decode(s, UTF_8.displayName());
} catch (UnsupportedEncodingException e) {
throw new IllegalArgumentException(e);
}
offset = buffer.position();
stateStack.pop();
break;
default:
break;
}
break;
case HTTP_VERSION:
final byte p = buffer.get();
switch (p) {
case '\r':
int length = buffer.position() - offset;
String s =
new String(buffer.array(), buffer.arrayOffset() + offset, --length, US_ASCII);
this.version = Version.parse(s);
offset = buffer.position();
stateStack.pop();
break;
case 'H':
case 'T':
case 'P':
case '/':
case '0':
case '1':
case '9':
case '.':
// valid char for HTTP Version
break;
default:
throw new IllegalArgumentException(
String.format("Illegal character '%s' in %s", (char) p, stateStack.peek()));
}
break;
case REQUEST_LINE_END:
switch (buffer.get()) {
case '\n':
try {
return new RequestLine(method, url, version);
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
default:
throw new IllegalArgumentException("\\n was not encountered");
}
}
}
buffer.position(offset);
return null;
}