values.c File Reference

#include <grass/datetime.h>

Include dependency graph for values.c:

Go to the source code of this file.

Functions
int	datetime_check_year (const DateTime *dt, int year)
	Returns: 0 is legal year for dt -1 illegal year for this dt -2 dt has no year component. More...
int	datetime_check_month (const DateTime *dt, int month)
	Returns: 0 is legal month for dt -1 illegal month for this dt -2 dt has no month component. More...
int	datetime_check_day (const DateTime *dt, int day)
	Returns: 0 is legal day for dt -1 illegal day for this dt -2 dt has no day component Note: if dt.mode is ABSOLUTE, then dt.year and dt.month must also be legal, since the 'day' must be a legal value for the dt.year/dt.month. More...
int	datetime_check_hour (const DateTime *dt, int hour)
	returns: 0 on success -1 if 'dt' has an invalid hour -2 if 'dt' has no hour More...
int	datetime_check_minute (const DateTime *dt, int minute)
	returns: 0 on success -1 if 'dt' has an invalid minute -2 if 'dt' has no minute More...
int	datetime_check_second (const DateTime *dt, double second)
	returns: 0 on success -1 if 'dt' has an invalid second -2 if 'dt' has no second More...
int	datetime_check_fracsec (const DateTime *dt, int fracsec)
	returns: 0 on success -1 if 'dt' has an invalid fracsec -2 if 'dt' has no fracsec More...
int	datetime_get_year (const DateTime *dt, int *year)
	returns 0 on success or negative value on error More...
int	datetime_set_year (DateTime *dt, int year)
	if dt.mode = ABSOLUTE, this also sets dt.day = 0 More...
int	datetime_get_month (const DateTime *dt, int *month)
	returns 0 on success or negative value on error More...
int	datetime_set_month (DateTime *dt, int month)
	if dt.mode = ABSOLUTE, this also sets dt.day = 0 More...
int	datetime_get_day (const DateTime *dt, int *day)
	returns 0 on success or negative value on error More...
int	datetime_set_day (DateTime *dt, int day)
	if dt.mode = ABSOLUTE, then the dt.year, dt.month: More...
int	datetime_get_hour (const DateTime *dt, int *hour)
	returns 0 on success or negative value on error More...
int	datetime_set_hour (DateTime *dt, int hour)
	returns 0 on success or negative value on error More...
int	datetime_get_minute (const DateTime *dt, int *minute)
	returns 0 on success or negative value on error More...
int	datetime_set_minute (DateTime *dt, int minute)
	returns 0 on success or negative value on error More...
int	datetime_get_second (const DateTime *dt, double *second)
	returns 0 on success or negative value on error More...
int	datetime_set_second (DateTime *dt, double second)
	returns 0 on success or negative value on error More...
int	datetime_get_fracsec (const DateTime *dt, int *fracsec)
	returns 0 on success or negative value on error More...
int	datetime_set_fracsec (DateTime *dt, int fracsec)
	returns 0 on success or negative value on error More...

Function Documentation

int datetime_check_day	(	const DateTime *	dt,
		int	day
	)

Returns: 0 is legal day for dt -1 illegal day for this dt -2 dt has no day component
Note: if dt.mode is ABSOLUTE, then dt.year and dt.month must also be legal, since the 'day' must be a legal value for the dt.year/dt.month.

Parameters

dt
day

Returns

int

Definition at line 91 of file values.c.

References datetime_days_in_month(), datetime_error(), datetime_get_month(), datetime_get_year(), datetime_is_absolute(), datetime_is_positive(), and stat.

Referenced by datetime_get_day(), and datetime_set_day().

int datetime_check_fracsec	(	const DateTime *	dt,
		int	fracsec
	)

returns: 0 on success -1 if 'dt' has an invalid fracsec -2 if 'dt' has no fracsec

Parameters

dt
fracsec

Returns

int

Definition at line 207 of file values.c.

References datetime_error().

Referenced by datetime_get_fracsec(), and datetime_set_fracsec().

int datetime_check_hour	(	const DateTime *	dt,
		int	hour
	)

returns: 0 on success -1 if 'dt' has an invalid hour -2 if 'dt' has no hour

Parameters

dt
hour

Returns

int

Definition at line 129 of file values.c.

References datetime_error().

Referenced by datetime_get_hour(), and datetime_set_hour().

int datetime_check_minute	(	const DateTime *	dt,
		int	minute
	)

returns: 0 on success -1 if 'dt' has an invalid minute -2 if 'dt' has no minute

Parameters

dt
minute

Returns

int

Definition at line 155 of file values.c.

References datetime_error().

Referenced by datetime_get_minute(), and datetime_set_minute().

int datetime_check_month	(	const DateTime *	dt,
		int	month
	)

Returns: 0 is legal month for dt -1 illegal month for this dt -2 dt has no month component.

Parameters

dt
month

Returns

int

Definition at line 55 of file values.c.

References datetime_error(), datetime_is_absolute(), and datetime_is_relative().

Referenced by datetime_get_month(), and datetime_set_month().

int datetime_check_second	(	const DateTime *	dt,
		double	second
	)

returns: 0 on success -1 if 'dt' has an invalid second -2 if 'dt' has no second

Parameters

dt
second

Returns

int

Definition at line 181 of file values.c.

References datetime_error().

Referenced by datetime_get_second(), and datetime_set_second().

int datetime_check_year	(	const DateTime *	dt,
		int	year
	)

Returns: 0 is legal year for dt -1 illegal year for this dt -2 dt has no year component.

Parameters

dt
year

Returns

int

Definition at line 29 of file values.c.

References datetime_error(), and datetime_is_absolute().

Referenced by datetime_get_year(), and datetime_set_year().

int datetime_get_day	(	const DateTime *	dt,
		int *	day
	)

returns 0 on success or negative value on error

Parameters

dt
day

Returns

int

Definition at line 325 of file values.c.

References datetime_check_day(), and stat.

Referenced by datetime_format().

int datetime_get_fracsec	(	const DateTime *	dt,
		int *	fracsec
	)

returns 0 on success or negative value on error

Parameters

dt
fracsec

Returns

int

Definition at line 508 of file values.c.

References datetime_check_fracsec(), and stat.

Referenced by datetime_format().

int datetime_get_hour	(	const DateTime *	dt,
		int *	hour
	)

returns 0 on success or negative value on error

Parameters

dt
hour

Returns

int

Definition at line 376 of file values.c.

References datetime_check_hour(), and stat.

Referenced by datetime_format().

int datetime_get_minute	(	const DateTime *	dt,
		int *	minute
	)

returns 0 on success or negative value on error

Parameters

dt
minute

Returns

int

Definition at line 420 of file values.c.

References datetime_check_minute(), and stat.

Referenced by datetime_format().

int datetime_get_month	(	const DateTime *	dt,
		int *	month
	)

returns 0 on success or negative value on error

Parameters

dt
month

Returns

int

Definition at line 276 of file values.c.

References datetime_check_month(), and stat.

Referenced by datetime_check_day(), and datetime_format().

int datetime_get_second	(	const DateTime *	dt,
		double *	second
	)

returns 0 on success or negative value on error

Parameters

dt
second

Returns

int

Definition at line 464 of file values.c.

References datetime_check_second(), and stat.

Referenced by datetime_format().

int datetime_get_year	(	const DateTime *	dt,
		int *	year
	)

returns 0 on success or negative value on error

Parameters

dt
year

Returns

int

Definition at line 227 of file values.c.

References datetime_check_year(), and stat.

Referenced by datetime_check_day(), and datetime_format().

int datetime_set_day	(	DateTime *	dt,
		int	day
	)

if dt.mode = ABSOLUTE, then the dt.year, dt.month:

if (day >  <b>datetime_days_in_month</b> (dt.year, dt.month)) 
{error} 

This implies that year/month must be set for ABSOLUTE datetimes.

Returns 0 on success or negative value on error

Parameters

dt
day

Returns

int

Definition at line 354 of file values.c.

References datetime_check_day(), and stat.

Referenced by datetime_get_local_time(), and datetime_get_local_timezone().

int datetime_set_fracsec	(	DateTime *	dt,
		int	fracsec
	)

returns 0 on success or negative value on error

Parameters

dt
fracsec

Returns

int

Definition at line 530 of file values.c.

References datetime_check_fracsec(), and stat.

int datetime_set_hour	(	DateTime *	dt,
		int	hour
	)

returns 0 on success or negative value on error

Parameters

dt
hour

Returns

int

Definition at line 398 of file values.c.

References datetime_check_hour(), and stat.

Referenced by datetime_get_local_time(), and datetime_get_local_timezone().

int datetime_set_minute	(	DateTime *	dt,
		int	minute
	)

returns 0 on success or negative value on error

Parameters

dt
minute

Returns

int

Definition at line 442 of file values.c.

References datetime_check_minute(), and stat.

Referenced by datetime_change_timezone(), datetime_get_local_time(), and datetime_get_local_timezone().

int datetime_set_month	(	DateTime *	dt,
		int	month
	)

if dt.mode = ABSOLUTE, this also sets dt.day = 0

returns 0 on success or negative value on error

Parameters

dt
month

Returns

int

Definition at line 300 of file values.c.

References datetime_check_month(), datetime_is_absolute(), and stat.

Referenced by datetime_get_local_time(), and datetime_get_local_timezone().

int datetime_set_second	(	DateTime *	dt,
		double	second
	)

returns 0 on success or negative value on error

Parameters

dt
second

Returns

int

Definition at line 486 of file values.c.

References datetime_check_second(), and stat.

Referenced by datetime_get_local_time(), and datetime_get_local_timezone().

int datetime_set_year	(	DateTime *	dt,
		int	year
	)

if dt.mode = ABSOLUTE, this also sets dt.day = 0

returns 0 on success or negative value on error

Parameters

dt
year

Returns

int

Definition at line 251 of file values.c.

References datetime_check_year(), datetime_is_absolute(), and stat.

Referenced by datetime_get_local_time(), and datetime_get_local_timezone().