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- /*
- * Copyright (c) 2020, Sergey Bugaev <bugaevc@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #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
- };
- enum class FailureBehavior {
- PrintUsageAndExit,
- PrintUsage,
- Exit,
- Ignore,
- };
- 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::formatted("--{}", long_name);
- return String::formatted("-{: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* const* argv, FailureBehavior failure_behavior = FailureBehavior::PrintUsageAndExit);
- // *Without* trailing newline!
- void set_general_help(const char* help_string) { m_general_help = help_string; };
- void set_stop_on_first_non_option(bool stop_on_first_non_option) { m_stop_on_first_non_option = stop_on_first_non_option; }
- 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(String& value, const char* help_string, const char* long_name, char short_name, const char* value_name);
- void add_option(StringView& value, char const* help_string, char const* long_name, char short_name, char const* 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(StringView& value, char const* help_string, char const* 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);
- void add_positional_argument(Vector<String>& 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 };
- bool m_stop_on_first_non_option { false };
- };
- }
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