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79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
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/*
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* Copyright (C) 2024 Xiaomi Corporation. All rights reserved.
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* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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*/
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#ifndef OPTION_PARSER_H_
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#define OPTION_PARSER_H_
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#include <functional>
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#include <string>
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#include <vector>
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#include "config.h"
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namespace analyzer {
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class OptionParser
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{
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public:
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enum class HasArgument { No, Yes };
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enum class ArgumentCount { One, OneOrMore, ZeroOrMore };
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struct Option;
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using Callback = std::function<void(const char *)>;
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using NullCallback = std::function<void()>;
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struct Option {
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Option(char short_name, const std::string &long_name,
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const std::string &metavar, HasArgument has_argument,
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const std::string &help, const Callback &);
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char short_name;
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std::string long_name;
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std::string metavar;
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bool has_argument;
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std::string help;
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Callback callback;
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};
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struct Argument {
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Argument(const std::string &name, ArgumentCount, const Callback &);
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std::string name;
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ArgumentCount count;
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Callback callback;
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int handled_count = 0;
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};
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explicit OptionParser(const char *program_name, const char *description);
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void AddOption(const Option &);
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void AddOption(char short_name, const char *long_name, const char *help,
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const NullCallback &);
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void AddOption(const char *long_name, const char *help,
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const NullCallback &);
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void AddOption(char short_name, const char *long_name, const char *metavar,
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const char *help, const Callback &);
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void AddArgument(const std::string &name, ArgumentCount, const Callback &);
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void SetErrorCallback(const Callback &);
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void Parse(int argc, char *argv[]);
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void PrintHelp();
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private:
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static int Match(const char *s, const std::string &full, bool has_argument);
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void ANALYZER_PRINTF_FORMAT(2, 3) Errorf(const char *format, ...);
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void HandleArgument(size_t *arg_index, const char *arg_value);
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void DefaultError(const std::string &);
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std::string program_name_;
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std::string description_;
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std::vector<Option> options_;
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std::vector<Argument> arguments_;
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Callback on_error_;
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};
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} // namespace analyzer
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#endif
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