BeamMP-Server/include/ArgsParser.h
2024-01-23 21:00:11 +01:00

68 lines
2.2 KiB
C++

// BeamMP, the BeamNG.drive multiplayer mod.
// Copyright (C) 2024 BeamMP Ltd., BeamMP team and contributors.
//
// BeamMP Ltd. can be contacted by electronic mail via contact@beammp.com.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
#pragma once
#include <initializer_list>
#include <optional>
#include <string>
#include <string_view>
#include <vector>
/*
* Allows syntax:
* --help : long flags
* --path=/home/lion : long assignments
*/
class ArgsParser {
public:
enum Flags : int {
NONE = 0,
REQUIRED = 1, // argument is required
HAS_VALUE = 2, // argument must have a value
};
ArgsParser() = default;
void Parse(const std::vector<std::string_view>& ArgList);
// prints errors if any errors occurred, in that case also returns false
bool Verify();
void RegisterArgument(std::vector<std::string>&& ArgumentNames, int Flags);
// pass all possible names for this argument (short, long, etc)
bool FoundArgument(const std::vector<std::string>& Names);
std::optional<std::string> GetValueOfArgument(const std::vector<std::string>& Names);
private:
void ConsumeLongAssignment(const std::string& Arg);
void ConsumeLongFlag(const std::string& Arg);
bool IsRegistered(const std::string& Name);
struct Argument {
std::string Name;
std::optional<std::string> Value;
};
struct RegisteredArgument {
std::vector<std::string> Names;
int Flags;
};
std::vector<RegisteredArgument> mRegisteredArguments;
std::vector<Argument> mFoundArgs;
};