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iso8601.h
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iso8601.h
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/*
* Copyright 2005-2020 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#ifndef PCMK__CRM_COMMON_ISO8601__H
# define PCMK__CRM_COMMON_ISO8601__H
# include <time.h>
# include <ctype.h>
# include <stdint.h> // uint32_t
# include <stdbool.h> // bool
#ifdef __cplusplus
extern "C" {
#endif
/**
* \file
* \brief ISO_8601 Date handling
* \ingroup date
*/
/*
* See https://en.wikipedia.org/wiki/ISO_8601
*/
typedef struct crm_time_s crm_time_t;
typedef struct crm_time_period_s {
crm_time_t *start;
crm_time_t *end;
crm_time_t *diff;
} crm_time_period_t;
/* Creates a new date/time object conforming to ISO 8601, for example:
* Ordinal: 2010-01 12:00:00 +10:00
* Gregorian: 2010-01-01 12:00:00 +10:00
* ISO Week: 2010-W53-6 12:00:00 +10:00
*
* Notes:
* Only one of date, time is required
* If date or timezone is unspecified, they default to the current one
* Supplying NULL results in the current date/time
* Dashes may be omitted from dates
* Colons may be omitted from times and timezones
* A timezone of 'Z' denotes UTC time
*/
crm_time_t *crm_time_new(const char *string);
crm_time_t *crm_time_new_undefined(void);
void crm_time_free(crm_time_t * dt);
bool crm_time_is_defined(const crm_time_t *t);
char *crm_time_as_string(const crm_time_t *dt, int flags);
#define crm_time_log(level, prefix, dt, flags) \
crm_time_log_alias(level, __FILE__, __func__, __LINE__, prefix, dt, flags)
void crm_time_log_alias(int log_level, const char *file, const char *function,
int line, const char *prefix,
const crm_time_t *date_time, int flags);
# define crm_time_log_date 0x001
# define crm_time_log_timeofday 0x002
# define crm_time_log_with_timezone 0x004
# define crm_time_log_duration 0x008
# define crm_time_ordinal 0x010
# define crm_time_weeks 0x020
# define crm_time_seconds 0x100
# define crm_time_epoch 0x200
crm_time_t *crm_time_parse_duration(const char *duration_str);
crm_time_t *crm_time_calculate_duration(const crm_time_t *dt,
const crm_time_t *value);
crm_time_period_t *crm_time_parse_period(const char *period_str);
void crm_time_free_period(crm_time_period_t *period);
int crm_time_compare(const crm_time_t *a, const crm_time_t *b);
int crm_time_get_timeofday(const crm_time_t *dt, uint32_t *h, uint32_t *m,
uint32_t *s);
int crm_time_get_timezone(const crm_time_t *dt, uint32_t *h, uint32_t *m);
int crm_time_get_gregorian(const crm_time_t *dt, uint32_t *y, uint32_t *m,
uint32_t *d);
int crm_time_get_ordinal(const crm_time_t *dt, uint32_t *y, uint32_t *d);
int crm_time_get_isoweek(const crm_time_t *dt, uint32_t *y, uint32_t *w,
uint32_t * d);
/* Time in seconds since 0000-01-01 00:00:00Z */
long long crm_time_get_seconds(const crm_time_t *dt);
/* Time in seconds since 1970-01-01 00:00:00Z */
long long crm_time_get_seconds_since_epoch(const crm_time_t *dt);
void crm_time_set(crm_time_t *target, const crm_time_t *source);
void crm_time_set_timet(crm_time_t *target, const time_t *source);
/* Returns a new time object */
crm_time_t *pcmk_copy_time(const crm_time_t *source);
crm_time_t *crm_time_add(const crm_time_t *dt, const crm_time_t *value);
crm_time_t *crm_time_subtract(const crm_time_t *dt, const crm_time_t *value);
/* All crm_time_add_... functions support negative values */
void crm_time_add_seconds(crm_time_t * dt, int value);
void crm_time_add_minutes(crm_time_t * dt, int value);
void crm_time_add_hours(crm_time_t * dt, int value);
void crm_time_add_days(crm_time_t * dt, int value);
void crm_time_add_weeks(crm_time_t * dt, int value);
void crm_time_add_months(crm_time_t * dt, int value);
void crm_time_add_years(crm_time_t * dt, int value);
/* Useful helper functions */
int crm_time_january1_weekday(int year);
int crm_time_weeks_in_year(int year);
int crm_time_days_in_month(int month, int year);
bool crm_time_leapyear(int year);
bool crm_time_check(const crm_time_t *dt);
#ifdef __cplusplus
}
#endif
#endif

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