#ifndef OLSON_H
#define OLSON_H

#include <time.h>

#define OLSON_API

typedef struct zoneinfo_* zoneinfo_t;

OLSON_API void
olson_init(const char* tzdir);

OLSON_API zoneinfo_t
olson_create(const char* name);

OLSON_API void
olson_destroy(zoneinfo_t sp);

OLSON_API zoneinfo_t
olson_gmt(void);

OLSON_API const char*
olson_name(zoneinfo_t sp);

OLSON_API char*
olson_asctime(const struct tm*, char*);

OLSON_API char*
olson_ctime(zoneinfo_t sp, const time_t*, char*);

OLSON_API double
olson_difftime(const time_t, const time_t);

OLSON_API struct tm*
olson_gmtime(const time_t*, struct tm*);

OLSON_API struct tm*
olson_localtime(zoneinfo_t sp, const time_t*, struct tm*);

OLSON_API time_t
olson_mktime(zoneinfo_t sp, struct tm* const);

OLSON_API struct tm*
olson_offtime(const time_t*, const long, struct tm*);

OLSON_API void
olson_tzset(zoneinfo_t sp, const char* name);

OLSON_API void
olson_tzsetwall(zoneinfo_t sp);

OLSON_API long
olson_gmtoff(zoneinfo_t sp, int isdst);

OLSON_API const char*
olson_zone(zoneinfo_t sp, int isdst);

#if 0
# define asctime 0
# define asctime_r 0
# define ctime 0
# define ctime_r 0
# define difftime 0
# define gmtime 0
# define gmtime_r 0
# define localtime 0
# define localtime_r 0
# define mktime 0
# define offtime 0
# define posix2time 0
# define time2posix 0
# define timegm 0
# define timelocal 0
# define timeoff 0
# define tzset 0
# define tzsetwall 0
# define timezone 0
# define daylight 0
# define altzone 0
# define tzname 0
#endif

#endif /* OLSON_H */