82 lines
2.5 KiB
C++
82 lines
2.5 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#pragma once
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#include "td/utils/common.h"
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#include "td/utils/misc.h"
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#include "td/utils/Slice.h"
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#include "td/utils/Status.h"
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#include "td/utils/StringBuilder.h"
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#include <functional>
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namespace td {
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class OptionParser {
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class Option {
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public:
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enum class Type { NoArg, Arg };
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Type type;
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char short_key;
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string long_key;
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string description;
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std::function<Status(Slice)> arg_callback;
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};
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void add_option(Option::Type type, char short_key, Slice long_key, Slice description,
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std::function<Status(Slice)> callback);
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public:
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template <class T>
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static std::function<Status(Slice)> parse_integer(T &value) {
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return [&value](Slice value_str) {
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TRY_RESULT_ASSIGN(value, to_integer_safe<T>(value_str));
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return Status::OK();
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};
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}
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static std::function<void(Slice)> parse_string(string &value) {
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return [&value](Slice value_str) {
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value = value_str.str();
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};
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}
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void set_usage(Slice executable_name, Slice usage);
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void set_description(string description);
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void add_checked_option(char short_key, Slice long_key, Slice description, std::function<Status(Slice)> callback);
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void add_checked_option(char short_key, Slice long_key, Slice description, std::function<Status(void)> callback);
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void add_option(char short_key, Slice long_key, Slice description, std::function<Status(Slice)> callback) = delete;
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void add_option(char short_key, Slice long_key, Slice description, std::function<Status(void)> callback) = delete;
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void add_option(char short_key, Slice long_key, Slice description, std::function<void(Slice)> callback);
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void add_option(char short_key, Slice long_key, Slice description, std::function<void(void)> callback);
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void add_check(std::function<Status()> check);
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// returns found non-option parameters
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Result<vector<char *>> run(int argc, char *argv[], int expected_non_option_count = -1) TD_WARN_UNUSED_RESULT;
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// for testing only
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Result<vector<char *>> run_impl(int argc, char *argv[], int expected_non_option_count) TD_WARN_UNUSED_RESULT;
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friend StringBuilder &operator<<(StringBuilder &sb, const OptionParser &o);
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private:
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vector<Option> options_;
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vector<std::function<Status()>> checks_;
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string usage_;
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string description_;
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};
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} // namespace td
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