in demo_example/http/http_request.hpp [60:245]
result_type consume(request& req, char input) {
switch (state_) {
case method_start:
if (!is_char(input) || is_ctl(input) || is_tspecial(input)) {
return bad;
} else {
state_ = method;
req.method.push_back(input);
return indeterminate;
}
case method:
if (input == ' ') {
state_ = uri;
return indeterminate;
} else if (!is_char(input) || is_ctl(input) ||
is_tspecial(input)) {
return bad;
} else {
req.method.push_back(input);
return indeterminate;
}
case uri:
if (input == ' ') {
state_ = http_version_h;
return indeterminate;
} else if (is_ctl(input)) {
return bad;
} else {
req.uri.push_back(input);
return indeterminate;
}
case http_version_h:
if (input == 'H') {
state_ = http_version_t_1;
return indeterminate;
} else {
return bad;
}
case http_version_t_1:
if (input == 'T') {
state_ = http_version_t_2;
return indeterminate;
} else {
return bad;
}
case http_version_t_2:
if (input == 'T') {
state_ = http_version_p;
return indeterminate;
} else {
return bad;
}
case http_version_p:
if (input == 'P') {
state_ = http_version_slash;
return indeterminate;
} else {
return bad;
}
case http_version_slash:
if (input == '/') {
req.http_version_major = 0;
req.http_version_minor = 0;
state_ = http_version_major_start;
return indeterminate;
} else {
return bad;
}
case http_version_major_start:
if (is_digit(input)) {
req.http_version_major =
req.http_version_major * 10 + input - '0';
state_ = http_version_major;
return indeterminate;
} else {
return bad;
}
case http_version_major:
if (input == '.') {
state_ = http_version_minor_start;
return indeterminate;
} else if (is_digit(input)) {
req.http_version_major =
req.http_version_major * 10 + input - '0';
return indeterminate;
} else {
return bad;
}
case http_version_minor_start:
if (is_digit(input)) {
req.http_version_minor =
req.http_version_minor * 10 + input - '0';
state_ = http_version_minor;
return indeterminate;
} else {
return bad;
}
case http_version_minor:
if (input == '\r') {
state_ = expecting_newline_1;
return indeterminate;
} else if (is_digit(input)) {
req.http_version_minor =
req.http_version_minor * 10 + input - '0';
return indeterminate;
} else {
return bad;
}
case expecting_newline_1:
if (input == '\n') {
state_ = header_line_start;
return indeterminate;
} else {
return bad;
}
case header_line_start:
if (input == '\r') {
state_ = expecting_newline_3;
return indeterminate;
} else if (!req.headers.empty() &&
(input == ' ' || input == '\t')) {
state_ = header_lws;
return indeterminate;
} else if (!is_char(input) || is_ctl(input) ||
is_tspecial(input)) {
return bad;
} else {
req.headers.push_back(header());
req.headers.back().name.push_back(input);
state_ = header_name;
return indeterminate;
}
case header_lws:
if (input == '\r') {
state_ = expecting_newline_2;
return indeterminate;
} else if (input == ' ' || input == '\t') {
return indeterminate;
} else if (is_ctl(input)) {
return bad;
} else {
state_ = header_value;
req.headers.back().value.push_back(input);
return indeterminate;
}
case header_name:
if (input == ':') {
state_ = space_before_header_value;
return indeterminate;
} else if (!is_char(input) || is_ctl(input) ||
is_tspecial(input)) {
return bad;
} else {
req.headers.back().name.push_back(input);
return indeterminate;
}
case space_before_header_value:
if (input == ' ') {
state_ = header_value;
return indeterminate;
} else {
return bad;
}
case header_value:
if (input == '\r') {
state_ = expecting_newline_2;
return indeterminate;
} else if (is_ctl(input)) {
return bad;
} else {
req.headers.back().value.push_back(input);
return indeterminate;
}
case expecting_newline_2:
if (input == '\n') {
state_ = header_line_start;
return indeterminate;
} else {
return bad;
}
case expecting_newline_3:
return (input == '\n') ? good : bad;
default:
return bad;
}
}