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#ifndef __VERIFLECT_ARG_PARSER_H__
#define __VERIFLECT_ARG_PARSER_H__
#include <iostream>
#include <string>
#include <unordered_map>
#include <vector>
class ArgParser {
public:
enum OptionType { OPTION_TYPE_UNDEFINED = 0, OPTION_TYPE_FLAG, OPTION_TYPE_STRING, OPTION_TYPE_INT, OPTION_TYPE_FLOAT };
struct OptionValue {
std::string str;
union {
int i32;
float f32;
};
};
struct Option {
std::string short_name;
std::string long_name;
OptionType type;
std::string desc;
OptionValue value;
OptionValue default_value;
bool parsed;
};
ArgParser();
~ArgParser();
bool AddFlag(const std::string& short_name, const std::string& long_name, const std::string& desc);
bool AddOptionString(const std::string& short_name, const std::string& long_name, const std::string& desc,
const std::string& default_value = "");
bool AddOptionInt(const std::string& short_name, const std::string& long_name, const std::string& desc, int default_value = 0);
bool AddOptionFloat(const std::string& short_name, const std::string& long_name, const std::string& desc,
float default_value = 0);
bool Parse(int argc, char** argv, std::ostream& os);
size_t GetArgCount() const;
bool GetArg(size_t i, std::string* p_value) const;
const std::vector<std::string>& GetArgs() const;
bool GetFlag(const std::string& short_name, const std::string& long_name) const;
bool GetString(const std::string& short_name, const std::string& long_name, std::string* p_value) const;
bool GetInt(const std::string& short_name, const std::string& long_name, int* p_value) const;
bool GetFloat(const std::string& short_name, const std::string& long_name, float* p_value) const;
void PrintHelp(std::ostream& os);
private:
ArgParser::Option* FindOptionByShortName(const std::string& short_name);
const ArgParser::Option* FindOptionByShortName(const std::string& short_name) const;
ArgParser::Option* FindOptionByLongName(const std::string& long_name);
const ArgParser::Option* FindOptionByLongName(const std::string& long_name) const;
private:
std::vector<ArgParser::Option> m_options;
std::vector<std::string> m_args;
};
#endif // __VERIFLECT_ARG_PARSER_H__
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