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300 lines
9.8 KiB
300 lines
9.8 KiB
// Copyright (c) 2014-2020, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
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#pragma once
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#include <functional>
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#include <iostream>
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#include <sstream>
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#include <array>
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#include <type_traits>
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#include <boost/program_options/parsers.hpp>
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#include <boost/program_options/options_description.hpp>
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#include <boost/program_options/variables_map.hpp>
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#include "include_base_utils.h"
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namespace command_line
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{
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//! \return True if `str` is `is_iequal("y" || "yes" || `tr("yes"))`.
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bool is_yes(const std::string& str);
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//! \return True if `str` is `is_iequal("n" || "no" || `tr("no"))`.
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bool is_no(const std::string& str);
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template<typename T, bool required = false, bool dependent = false, int NUM_DEPS = 1>
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struct arg_descriptor;
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template<typename T>
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struct arg_descriptor<T, false>
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{
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typedef T value_type;
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const char* name;
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const char* description;
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T default_value;
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bool not_use_default;
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};
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template<typename T>
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struct arg_descriptor<std::vector<T>, false>
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{
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typedef std::vector<T> value_type;
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const char* name;
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const char* description;
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};
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template<typename T>
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struct arg_descriptor<T, true>
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{
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static_assert(!std::is_same<T, bool>::value, "Boolean switch can't be required");
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typedef T value_type;
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const char* name;
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const char* description;
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};
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template<typename T>
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struct arg_descriptor<T, false, true>
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{
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typedef T value_type;
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const char* name;
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const char* description;
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T default_value;
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const arg_descriptor<bool, false>& ref;
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std::function<T(bool, bool, T)> depf;
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bool not_use_default;
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};
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template<typename T, int NUM_DEPS>
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struct arg_descriptor<T, false, true, NUM_DEPS>
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{
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typedef T value_type;
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const char* name;
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const char* description;
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T default_value;
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std::array<const arg_descriptor<bool, false> *, NUM_DEPS> ref;
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std::function<T(std::array<bool, NUM_DEPS>, bool, T)> depf;
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bool not_use_default;
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};
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template<typename T>
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boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, true>& /*arg*/)
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{
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return boost::program_options::value<T>()->required();
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}
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template<typename T>
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boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false>& arg)
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{
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auto semantic = boost::program_options::value<T>();
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if (!arg.not_use_default)
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semantic->default_value(arg.default_value);
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return semantic;
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}
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template<typename T>
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boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false, true>& arg)
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{
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auto semantic = boost::program_options::value<T>();
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if (!arg.not_use_default) {
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std::ostringstream format;
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format << arg.depf(false, true, arg.default_value) << ", "
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<< arg.depf(true, true, arg.default_value) << " if '"
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<< arg.ref.name << "'";
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semantic->default_value(arg.depf(arg.ref.default_value, true, arg.default_value), format.str());
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}
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return semantic;
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}
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template<typename T, int NUM_DEPS>
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boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false, true, NUM_DEPS>& arg)
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{
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auto semantic = boost::program_options::value<T>();
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if (!arg.not_use_default) {
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std::array<bool, NUM_DEPS> depval;
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depval.fill(false);
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std::ostringstream format;
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format << arg.depf(depval, true, arg.default_value);
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for (size_t i = 0; i < depval.size(); ++i)
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{
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depval.fill(false);
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depval[i] = true;
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format << ", " << arg.depf(depval, true, arg.default_value) << " if '" << arg.ref[i]->name << "'";
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}
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for (size_t i = 0; i < depval.size(); ++i)
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depval[i] = arg.ref[i]->default_value;
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semantic->default_value(arg.depf(depval, true, arg.default_value), format.str());
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}
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return semantic;
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}
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template<typename T>
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boost::program_options::typed_value<T, char>* make_semantic(const arg_descriptor<T, false>& arg, const T& def)
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{
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auto semantic = boost::program_options::value<T>();
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if (!arg.not_use_default)
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semantic->default_value(def);
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return semantic;
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}
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template<typename T>
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boost::program_options::typed_value<std::vector<T>, char>* make_semantic(const arg_descriptor<std::vector<T>, false>& /*arg*/)
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{
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auto semantic = boost::program_options::value< std::vector<T> >();
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semantic->default_value(std::vector<T>(), "");
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return semantic;
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}
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template<typename T, bool required, bool dependent, int NUM_DEPS>
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void add_arg(boost::program_options::options_description& description, const arg_descriptor<T, required, dependent, NUM_DEPS>& arg, bool unique = true)
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{
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if (0 != description.find_nothrow(arg.name, false))
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{
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CHECK_AND_ASSERT_MES(!unique, void(), "Argument already exists: " << arg.name);
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return;
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}
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description.add_options()(arg.name, make_semantic(arg), arg.description);
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}
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template<typename T>
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void add_arg(boost::program_options::options_description& description, const arg_descriptor<T, false>& arg, const T& def, bool unique = true)
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{
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if (0 != description.find_nothrow(arg.name, false))
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{
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CHECK_AND_ASSERT_MES(!unique, void(), "Argument already exists: " << arg.name);
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return;
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}
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description.add_options()(arg.name, make_semantic(arg, def), arg.description);
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}
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template<>
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inline void add_arg(boost::program_options::options_description& description, const arg_descriptor<bool, false>& arg, bool unique)
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{
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if (0 != description.find_nothrow(arg.name, false))
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{
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CHECK_AND_ASSERT_MES(!unique, void(), "Argument already exists: " << arg.name);
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return;
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}
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description.add_options()(arg.name, boost::program_options::bool_switch(), arg.description);
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}
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template<typename charT>
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boost::program_options::basic_parsed_options<charT> parse_command_line(int argc, const charT* const argv[],
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const boost::program_options::options_description& desc, bool allow_unregistered = false)
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{
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auto parser = boost::program_options::command_line_parser(argc, argv);
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parser.options(desc);
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if (allow_unregistered)
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{
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parser.allow_unregistered();
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}
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return parser.run();
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}
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template<typename F>
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bool handle_error_helper(const boost::program_options::options_description& desc, F parser)
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{
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try
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{
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return parser();
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}
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catch (const std::exception& e)
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{
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std::cerr << "Failed to parse arguments: " << e.what() << std::endl;
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std::cerr << desc << std::endl;
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return false;
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}
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catch (...)
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{
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std::cerr << "Failed to parse arguments: unknown exception" << std::endl;
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std::cerr << desc << std::endl;
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return false;
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}
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}
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template<typename T, bool required, bool dependent, int NUM_DEPS>
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typename std::enable_if<!std::is_same<T, bool>::value, bool>::type has_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent, NUM_DEPS>& arg)
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{
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auto value = vm[arg.name];
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return !value.empty();
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}
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template<typename T, bool required, bool dependent, int NUM_DEPS>
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bool is_arg_defaulted(const boost::program_options::variables_map& vm, const arg_descriptor<T, required, dependent, NUM_DEPS>& arg)
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{
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return vm[arg.name].defaulted();
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}
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template<typename T>
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T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, false, true>& arg)
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{
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return arg.depf(get_arg(vm, arg.ref), is_arg_defaulted(vm, arg), vm[arg.name].template as<T>());
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}
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template<typename T, int NUM_DEPS>
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T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, false, true, NUM_DEPS>& arg)
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{
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std::array<bool, NUM_DEPS> depval;
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for (size_t i = 0; i < depval.size(); ++i)
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depval[i] = get_arg(vm, *arg.ref[i]);
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return arg.depf(depval, is_arg_defaulted(vm, arg), vm[arg.name].template as<T>());
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}
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template<typename T, bool required>
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T get_arg(const boost::program_options::variables_map& vm, const arg_descriptor<T, required>& arg)
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{
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return vm[arg.name].template as<T>();
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}
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template<bool dependent, int NUM_DEPS>
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inline bool has_arg(const boost::program_options::variables_map& vm, const arg_descriptor<bool, false, dependent, NUM_DEPS>& arg)
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{
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return get_arg(vm, arg);
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}
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extern const arg_descriptor<bool> arg_help;
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extern const arg_descriptor<bool> arg_version;
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}
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