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https://github.com/RGBCube/serenity
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1c4f38749e
This allows its use in places where multiple calls to ArgsParser::parse() are needed, such as Shell builtins.
89 lines
3.3 KiB
C++
89 lines
3.3 KiB
C++
/*
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* Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
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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
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* modification, are 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
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Function.h>
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#include <AK/String.h>
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#include <AK/Vector.h>
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#include <stdio.h>
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namespace Core {
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class ArgsParser {
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public:
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ArgsParser();
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enum class Required {
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Yes,
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No
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};
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struct Option {
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bool requires_argument { true };
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const char* help_string { nullptr };
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const char* long_name { nullptr };
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char short_name { 0 };
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const char* value_name { nullptr };
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Function<bool(const char*)> accept_value;
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String name_for_display() const
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{
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if (long_name)
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return String::format("--%s", long_name);
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return String::format("-%c", short_name);
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}
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};
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struct Arg {
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const char* help_string { nullptr };
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const char* name { nullptr };
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int min_values { 0 };
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int max_values { 1 };
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Function<bool(const char*)> accept_value;
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};
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bool parse(int argc, char** argv, bool exit_on_failure = true);
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void print_usage(FILE*, const char* argv0);
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void add_option(Option&&);
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void add_option(bool& value, const char* help_string, const char* long_name, char short_name);
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void add_option(const char*& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
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void add_option(int& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
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void add_positional_argument(Arg&&);
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void add_positional_argument(const char*& value, const char* help_string, const char* name, Required required = Required::Yes);
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void add_positional_argument(int& value, const char* help_string, const char* name, Required required = Required::Yes);
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void add_positional_argument(Vector<const char*>& value, const char* help_string, const char* name, Required required = Required::Yes);
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private:
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Vector<Option> m_options;
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Vector<Arg> m_positional_args;
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bool m_show_help { false };
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};
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}
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