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//
// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2026
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
#pragma once
#include "td/utils/common.h"
#include "td/utils/misc.h"
#include "td/utils/Slice.h"
#include "td/utils/Status.h"
#include "td/utils/StringBuilder.h"
#include <functional>
namespace td {
class OptionParser {
class Option {
public:
enum class Type { NoArg, Arg };
Type type;
char short_key;
string long_key;
string description;
std::function<Status(Slice)> arg_callback;
};
void add_option(Option::Type type, char short_key, Slice long_key, Slice description,
std::function<Status(Slice)> callback);
public:
template <class T>
static std::function<Status(Slice)> parse_integer(T &value) {
return [&value](Slice value_str) {
TRY_RESULT_ASSIGN(value, to_integer_safe<T>(value_str));
return Status::OK();
};
}
static std::function<void(Slice)> parse_string(string &value) {
return [&value](Slice value_str) {
value = value_str.str();
};
}
void set_usage(Slice executable_name, Slice usage);
void set_description(string description);
void add_checked_option(char short_key, Slice long_key, Slice description, std::function<Status(Slice)> callback);
void add_checked_option(char short_key, Slice long_key, Slice description, std::function<Status(void)> callback);
void add_option(char short_key, Slice long_key, Slice description, std::function<Status(Slice)> callback) = delete;
void add_option(char short_key, Slice long_key, Slice description, std::function<Status(void)> callback) = delete;
void add_option(char short_key, Slice long_key, Slice description, std::function<void(Slice)> callback);
void add_option(char short_key, Slice long_key, Slice description, std::function<void(void)> callback);
void add_check(std::function<Status()> check);
// returns found non-option parameters
Result<vector<char *>> run(int argc, char *argv[], int expected_non_option_count = -1) TD_WARN_UNUSED_RESULT;
// for testing only
Result<vector<char *>> run_impl(int argc, char *argv[], int expected_non_option_count) TD_WARN_UNUSED_RESULT;
friend StringBuilder &operator<<(StringBuilder &sb, const OptionParser &o);
private:
vector<Option> options_;
vector<std::function<Status()>> checks_;
string usage_;
string description_;
};
} // namespace td
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