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//===-- UriParser.cpp -----------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Utility/UriParser.h"
#include "llvm/Support/raw_ostream.h"
#include <string>
#include <cstdint>
#include <optional>
#include <tuple>
using namespace lldb_private;
llvm::raw_ostream &lldb_private::operator<<(llvm::raw_ostream &OS,
const URI &U) {
OS << U.scheme << "://[" << U.hostname << ']';
if (U.port)
OS << ':' << *U.port;
return OS << U.path;
}
std::optional<URI> URI::Parse(llvm::StringRef uri) {
URI ret;
const llvm::StringRef kSchemeSep("://");
auto pos = uri.find(kSchemeSep);
if (pos == std::string::npos)
return std::nullopt;
// Extract path.
ret.scheme = uri.substr(0, pos);
auto host_pos = pos + kSchemeSep.size();
auto path_pos = uri.find('/', host_pos);
if (path_pos != std::string::npos)
ret.path = uri.substr(path_pos);
else
ret.path = "/";
auto host_port = uri.substr(
host_pos,
((path_pos != std::string::npos) ? path_pos : uri.size()) - host_pos);
// Extract hostname
if (host_port.starts_with('[')) {
// hostname is enclosed with square brackets.
pos = host_port.rfind(']');
if (pos == std::string::npos)
return std::nullopt;
ret.hostname = host_port.substr(1, pos - 1);
host_port = host_port.drop_front(pos + 1);
if (!host_port.empty() && !host_port.consume_front(":"))
return std::nullopt;
} else {
std::tie(ret.hostname, host_port) = host_port.split(':');
}
// Extract port
if (!host_port.empty()) {
uint16_t port_value = 0;
if (host_port.getAsInteger(0, port_value))
return std::nullopt;
ret.port = port_value;
} else
ret.port = std::nullopt;
return ret;
}
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