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#ifndef _DATETIME_H
#define _DATETIME_H
#include <ctime>
#include <sstream>
struct interval_t
{
unsigned int years;
unsigned int months;
unsigned int seconds;
std::time_t begin;
std::time_t end;
interval_t(int _seconds = 0, int _months = 0, int _years = 0,
std::time_t _begin = 0, std::time_t _end = 0)
: years(_years), months(_months), seconds(_seconds),
begin(_begin), end(_end) {
}
interval_t(const std::string& desc)
: years(0), months(0), seconds(0), begin(0), end(0) {
std::istringstream stream(desc);
parse(stream);
}
operator bool() const {
return seconds > 0 || months > 0 || years > 0;
}
void start(const std::time_t moment) {
begin = first(moment);
}
std::time_t first(const std::time_t moment = 0) const;
std::time_t increment(const std::time_t) const;
void parse(std::istream& in);
};
extern std::time_t now;
extern int now_year;
extern char input_format[128];
extern const char * formats[];
bool parse_date_mask(const char * date_str, struct std::tm * result);
bool parse_date(const char * date_str, std::time_t * result,
const int year = -1);
bool quick_parse_date(const char * date_str, std::time_t * result);
class datetime_error : public std::exception {
std::string reason;
public:
datetime_error(const std::string& _reason) throw() : reason(_reason) {}
virtual ~datetime_error() throw() {}
virtual const char* what() const throw() {
return reason.c_str();
}
};
#endif // _DATETIME_H
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