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#ifndef _OPTION_H
#define _OPTION_H
#include <list>
#include <string>
#include <exception>
struct option_handler {
bool handled;
option_handler() : handled(false) {}
virtual ~option_handler() {}
virtual void operator()(const char * arg = NULL) = 0;
};
struct option_t {
char short_opt;
std::string long_opt;
bool wants_arg;
option_handler * handler;
option_t() : short_opt(0), wants_arg(false), handler(NULL) {}
};
class option_error : public std::exception {
std::string reason;
public:
option_error(const std::string& _reason) throw() : reason(_reason) {}
virtual ~option_error() throw() {}
virtual const char* what() const throw() {
return reason.c_str();
}
};
void add_option_handler(std::list<option_t>& options, const std::string& label,
const std::string& opt_chars, option_handler& option);
bool process_option(std::list<option_t>& options,
const std::string& opt, const char * arg = NULL);
void process_arguments(std::list<option_t>& options,
int argc, char ** argv, const bool anywhere,
std::list<std::string>& args);
void process_environment(std::list<option_t>& options,
char ** envp, const std::string& tag);
#endif // _OPTION_H
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