private String parseBody(byte[] data, int start, StompFrame frame) throws StompParseException {
String strLenght = frame.getHeaderValue("content-length");
int bodySize = -1;
if (strLenght != null) {
bodySize = Integer.parseInt(strLenght);
}
String body;
if (bodySize != -1) {
body = copyBody(data, start, start + bodySize);
} else {
body = copyBody(data, start);
}
return body;
}
public StompFrame parse(byte[] data) throws StompParseException {
if (data == null) throw new IllegalArgumentException("data must not be NULL!");
StompFrame frame = null;
int p = 0;
boolean inCommand = true;
boolean inHeader = false;
boolean previousWasEOL = false;
boolean bodyStart = false;
FrameType type = null;
try {
for (int i = 0; i <= data.length; i++) {
boolean consumed = false;
if (data[i] == StompFrame.PROTOCOL_EOL) {
// Skip CR after a LF
if (data.length > i + 1 && data[i + 1] == '\r') {
i++;
}
if (!previousWasEOL) {
previousWasEOL = true;
// Command or header end here
if (inCommand) {
type = parseFrameType(data, p, i);
frame = new StompFrame(type);
inCommand = false;
inHeader = true;
consumed = true;
} else if (inHeader) {
Pair<String> header = parseHeader(data, p, i);
frame.withHeader(header.right, header.left);
inHeader = true;
consumed = true;
} else {
}
} else {
// Two EOLs - Body starts after this OR we are done
p++; // Skip this EOL
String body = parseBody(data, p, frame);
if (body != null) {
frame.withBody(body);
}
break;
}
} else if (data[i] == StompFrame.PROTOCOL_END) {
previousWasEOL = false;
break;
} else {
previousWasEOL = false;
}
if (consumed) {
p = i + 1;
}
}
} catch (Throwable cause) {
throw new StompParseException(
"Can not parse message:" + System.lineSeparator() + new String(data, encoding), cause);
}
return frame;
}