74 lines
1.8 KiB
C++
74 lines
1.8 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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module;
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#include <variant>
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#include <string>
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#include <stdexcept>
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#include <algorithm>
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#include <cstring>
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#include <boost/program_options.hpp>
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export module katja.command_line;
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namespace katja
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{
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export enum class command
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{
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updates,
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search,
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help
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};
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export struct command_line
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{
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const command type;
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const std::vector<std::string> arguments;
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};
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export class invalid_command_error : public std::runtime_error
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{
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const std::string command;
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public:
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invalid_command_error()
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: std::runtime_error("Expecting the command line to begin with a command.")
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{
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}
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invalid_command_error(const std::string& invalid_command)
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: command{ invalid_command },
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std::runtime_error("Unknown command given on the command line.")
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{
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}
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};
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export command_line parse_command_line(int argc, const char **argv)
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{
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if (argc == 1)
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{
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throw invalid_command_error();
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}
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std::vector<std::string> arguments;
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std::copy(argv + 2, argv + argc, std::back_inserter(arguments));
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if (strcmp("updates", argv[1]) == 0)
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{
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return command_line{ command::updates, std::move(arguments) };
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}
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if (strcmp("search", argv[1]) == 0)
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{
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return command_line{ command::search, std::move(arguments) };
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}
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if (strcmp("help", argv[1]) == 0)
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{
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return command_line{ command::help, std::move(arguments) };
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}
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throw invalid_command_error(argv[1]);
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}
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}
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