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/*
* Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Function.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <stdio.h>
namespace Core {
class ArgsParser {
public:
ArgsParser();
enum class Required {
Yes,
No
};
struct Option {
bool requires_argument { true };
const char* help_string { nullptr };
const char* long_name { nullptr };
char short_name { 0 };
const char* value_name { nullptr };
Function<bool(const char*)> accept_value;
String name_for_display() const
{
if (long_name)
return String::format("--%s", long_name);
return String::format("-%c", short_name);
}
};
struct Arg {
const char* help_string { nullptr };
const char* name { nullptr };
int min_values { 0 };
int max_values { 1 };
Function<bool(const char*)> accept_value;
};
bool parse(int argc, char** argv, bool exit_on_failure = true);
// *Without* trailing newline!
void set_general_help(const char* help_string) { m_general_help = help_string; };
void print_usage(FILE*, const char* argv0);
void add_option(Option&&);
void add_option(bool& value, const char* help_string, const char* long_name, char short_name);
void add_option(const char*& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
void add_option(int& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
void add_option(double& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
void add_positional_argument(Arg&&);
void add_positional_argument(const char*& value, const char* help_string, const char* name, Required required = Required::Yes);
void add_positional_argument(String& value, const char* help_string, const char* name, Required required = Required::Yes);
void add_positional_argument(int& value, const char* help_string, const char* name, Required required = Required::Yes);
void add_positional_argument(double& value, const char* help_string, const char* name, Required required = Required::Yes);
void add_positional_argument(Vector<const char*>& value, const char* help_string, const char* name, Required required = Required::Yes);
private:
Vector<Option> m_options;
Vector<Arg> m_positional_args;
bool m_show_help { false };
const char* m_general_help { nullptr };
};
}
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