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#include "uriParse.h"
#include "compileTimeFormatter.h"
#include <boost/algorithm/string/case_conv.hpp>
#include <boost/lexical_cast.hpp>
#include <cctype>
#include <charconv>
#include <cstdint>
#include <cstring>
#include <utility>
namespace AdHoc {
Uri::Uri(const std::string & uri)
{
auto is_scheme_char = [](int c) {
return (!std::isalpha(c) && '+' != c && '-' != c && '.' != c) ? 0 : 1;
};
auto endor = [](std::string_view haystack, auto needle) {
if (const auto n = haystack.find_first_of(needle); n != std::string_view::npos) {
return n;
}
return haystack.length();
};
auto parsePort = [&uri, this](const std::string_view in) {
if (in.empty()) {
throw InvalidUri("Invalid format; no port after :", uri);
}
port.emplace();
if (const auto rc = std::from_chars(in.begin(), in.end(), *port);
rc.ptr != in.end() || rc.ec != std::errc {}) {
throw InvalidUri("Invalid port", uri);
}
};
std::string_view curstr = uri;
if (auto colon = curstr.find(':'); colon == std::string_view::npos) {
throw InvalidUri("Scheme marker not found", uri);
}
else {
if (!std::all_of(curstr.begin(), curstr.begin() + colon, is_scheme_char)) {
throw InvalidUri("Invalid format; no scheme end", uri);
}
scheme = curstr.substr(0, colon);
boost::algorithm::to_lower(scheme);
curstr.remove_prefix(colon + 1);
}
if (!curstr.starts_with("//")) {
throw InvalidUri("Invalid format; // not where expected", uri);
}
curstr.remove_prefix(2);
if (const auto n = curstr.find_first_of("@/"); n != std::string_view::npos && curstr[n] == '@') {
if (const auto colon = curstr.find_first_of("@:"); curstr[colon] == ':') {
username = curstr.substr(0, colon);
password = curstr.substr(colon + 1, n - colon - 1);
}
else {
username = curstr.substr(0, n);
}
curstr.remove_prefix(n + 1);
}
if (curstr.empty()) {
throw InvalidUri("Invalid format", uri);
}
if (curstr.starts_with('[')) {
if (const auto closeb = curstr.find(']'); closeb == std::string_view::npos) {
throw InvalidUri("IPv6 address not terminated", uri);
}
else {
host = curstr.substr(0, closeb + 1);
curstr.remove_prefix(closeb + 1);
}
}
else {
if (const auto hostend = curstr.find_first_of(":/"); hostend == std::string_view::npos) {
host = curstr;
return;
}
else {
if (hostend == 0) {
throw InvalidUri("Host cannot be blank", uri);
}
host = curstr.substr(0, hostend);
boost::algorithm::to_lower(host);
curstr.remove_prefix(hostend);
}
}
boost::algorithm::to_lower(host);
if (curstr.empty()) {
return;
}
if (curstr.starts_with(':')) {
curstr.remove_prefix(1);
if (curstr.empty()) {
throw InvalidUri("Invalid format; no port after :", uri);
}
if (const auto portend = curstr.find('/'); portend == std::string_view::npos) {
parsePort(curstr);
return;
}
else {
parsePort(curstr.substr(0, portend));
curstr.remove_prefix(portend);
}
}
curstr.remove_prefix(1);
if (const auto pathend = curstr.find_first_of("#?"); pathend == std::string_view::npos) {
path = curstr;
return;
}
else {
path = curstr.substr(0, pathend);
curstr.remove_prefix(pathend);
}
if (curstr.starts_with('?')) {
curstr.remove_prefix(1);
auto params = curstr.substr(0, endor(curstr, '#'));
while (!params.empty()) {
const auto pair = params.substr(0, endor(params, '&'));
if (const auto eq = pair.find('='); eq != std::string_view::npos) {
query.emplace(pair.substr(0, eq), pair.substr(eq + 1));
}
else {
query.emplace(pair, std::string {});
}
params.remove_prefix(pair.length());
if (!params.empty()) {
params.remove_prefix(1);
}
}
}
if (curstr.starts_with('#')) {
curstr.remove_prefix(1);
fragment = curstr;
}
}
InvalidUri::InvalidUri(std::string e, std::string u) :
Exception<std::invalid_argument>(std::string()), err(std::move(e)), uri(std::move(u))
{
}
AdHocFormatter(InvalidUriMsg, "InvalidUri (%?) parsing [%?]");
std::string
InvalidUri::message() const noexcept
{
return InvalidUriMsg::get(err, uri);
}
}
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