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-rw-r--r--Libraries/LibCore/ArgsParser.h94
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diff --git a/Libraries/LibCore/ArgsParser.h b/Libraries/LibCore/ArgsParser.h
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--- a/Libraries/LibCore/ArgsParser.h
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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(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 };
-};
-
-}