date.h

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#ifndef MUTT_MUTT_DATE_H
#define MUTT_MUTT_DATE_H
 
#include <locale.h>
#include <stdbool.h>
#include <stdint.h>
#include <time.h>
#ifdef __APPLE__
#include <xlocale.h>
#endif
 
struct Buffer;
 
/* theoretically time_t can be float but it is integer on most (if not all) systems */
#define TIME_T_MAX ((((time_t) 1 << (sizeof(time_t) * 8 - 2)) - 1) * 2 + 1)
#define TIME_T_MIN (-TIME_T_MAX - 1)
#define TM_YEAR_MAX                                                            \
  (1970 + (((((TIME_T_MAX - 59) / 60) - 59) / 60) - 23) / 24 / 366)
#define TM_YEAR_MIN (1970 - (TM_YEAR_MAX - 1970) - 1)
 
struct Tz
{
  char tzname[8];         
  unsigned char zhours;   
  unsigned char zminutes; 
  bool zoccident;         
};
 
time_t    mutt_date_add_timeout(time_t now, time_t timeout);
int       mutt_date_check_month(const char *s);
time_t    mutt_date_now(void);
uint64_t  mutt_date_now_ms(void);
struct tm mutt_date_gmtime(time_t t);
size_t    mutt_date_localtime_format(char *buf, size_t buflen, const char *format, time_t t);
size_t    mutt_date_localtime_format_locale(char *buf, size_t buflen, const char *format, time_t t, locale_t loc);
struct tm mutt_date_localtime(time_t t);
int       mutt_date_local_tz(time_t t);
void      mutt_date_make_date(struct Buffer *buf, bool local);
int       mutt_date_make_imap(char *buf, size_t buflen, time_t timestamp);
time_t    mutt_date_make_time(struct tm *t, bool local);
int       mutt_date_make_tls(char *buf, size_t buflen, time_t timestamp);
void      mutt_date_normalize_time(struct tm *tm);
time_t    mutt_date_parse_date(const char *s, struct Tz *tz_out);
time_t    mutt_date_parse_imap(const char *s);
void      mutt_date_sleep_ms(size_t ms);
 
#endif /* MUTT_MUTT_DATE_H */