shared_ptr<socket::Buffer> HttpParser::Parse(queue<shared_ptr<socket::Buffer>> &buffers, shared_ptr<http::HttpEntity> entity)
{
static char LF = 10;
static char CR = 13;
int curr_line = 0;
string name, value;
int buffer_size = 0;
char *buffer;
queue<shared_ptr<socket::Buffer>> copy = buffers;
while (!copy.empty()) {
buffer_size += copy.front()->Size();
copy.pop();
}
int offset = 0;
buffer = new char[buffer_size];
while (!buffers.empty()) {
memcpy(buffer + offset, buffers.front()->Buf(), buffers.front()->Size());
offset += buffers.front()->Size();
buffers.pop();
}
int token_count = 0;
int* starts = new int[3];
int* ends = new int[3];
int last_pos_processed = 0;
bool token_s_found = false;
int consecutive_lf = 0;
for (int j = 0; j < buffer_size; j++) {
if (buffer[j] == LF || buffer[j] == CR) {
if (buffer[j] == LF) {
consecutive_lf++;
}
if (consecutive_lf >= 2) {
break;
}
if (token_s_found) {
token_s_found = false;
ends[token_count++] = j;
}
if (token_count == 0)
continue;
if (curr_line == 0 && token_count == 3) {
entity->SetMethod(string(buffer + starts[0], buffer + ends[0]));
entity->SetResourcePath(string(buffer + starts[1], buffer + ends[1]));
entity->SetVersion(string(buffer + starts[2], buffer + ends[2]));
last_pos_processed = ends[2] + 1;
} else if (curr_line > 0 && token_count == 2) {
entity->AddHeader(string(buffer + starts[0], buffer + ends[0]), string(buffer + starts[1], buffer + ends[1]));
last_pos_processed = ends[1] + 1;
}
token_count = 0;
curr_line++;
} else if (curr_line == 0) {
consecutive_lf = 0;
if (buffer[j] == ' ') {
if (token_s_found && token_count < 2) {
token_s_found = false;
ends[token_count++] = j;
}
} else {
if (!token_s_found) {
token_s_found = true;
starts[token_count] = j;
}
}
} else {
consecutive_lf = 0;
if (buffer[j] == ' ' || buffer[j] == ':') {
if (token_s_found && token_count < 1) {
token_s_found = false;
ends[token_count++] = j;
}
} else {
if (!token_s_found) {
token_s_found = true;
starts[token_count] = j;
}
}
}
}
delete starts;
delete ends;
shared_ptr<socket::Buffer> buff;
int remaining_byte_number = buffer_size - last_pos_processed;
if (remaining_byte_number > 0) {
char *remaining_bytes = new char[remaining_byte_number];
buff = shared_ptr<socket::Buffer>(new socket::Buffer(remaining_bytes, remaining_byte_number));
} else {
buff = shared_ptr<socket::Buffer>(new socket::Buffer());
}
return buff;
}
