Timezone Class Reference

Timezone information More...

#include <cc/Timezone>

Inheritance diagram for Timezone:

Classes
class	FormatError
	Failed to parse timezone information file. More...

Public Types
using	Item = TimeInfo
	Timezone information record

Public Member Functions
	Timezone ()=default
	Create a null timezone file.
	Timezone (const String &data)
	Load timezone information from data (RFC 8536 format)
long	count () const
	Number of time information entries
const TimeInfo &	at (long i) const
	Get time information entry at i.
const TimeInfo &	operator[] (long i) const
	Get time information entry at i.
const TimeInfo &	infoForTime (double time) const
	Get time zone information for time.
int	operator() (double time) const
	Get UTF offset for time.
Public Member Functions inherited from Object
	Object ()=default
	Create a null object.
	operator bool () const
	Check if this is a non-null object.
bool	isNull () const
	Check if this is a null object.
template<class T >
bool	is () const
	Check if this object is of type T.
template<class T >
T	as () const
	Cast this object to type T.
bool	isWeak () const
	Check if the underlying object reference is weak.
bool	operator== (const Object &other) const
	Equality operator.
std::strong_ordering	operator<=> (const Object &other) const
	Ordering operator.
long	useCount () const
	Reference count.

Static Public Member Functions
static Timezone	local ()
	Get local timezone information.
static int	offset (double time)
	Get the local UTC offset for time (in seconds)
static Date	date (double time)
	Create the local calendar date by breaking down time.
static Date	currentDate ()
	Create the local calendar date of the current system time.
static double	nextTime (const Date &date, int hour, int minutes=0, int seconds=0)
	Get the next time matching the given day time.
static Timezone	loadFromFile (const String &path)
	Load timezone information from path.
using	value_type = TimeInfo
using	size_type = long
using	const_iterator = ArrayIterator<const Timezone, 1>
using	const_reverse_iterator = ArrayIterator<const Timezone, -1>
const_iterator	begin () const
const_iterator	cbegin () const
const_iterator	end () const
const_iterator	cend () const
const_reverse_iterator	rbegin () const
const_reverse_iterator	crbegin () const
const_reverse_iterator	rend () const
const_reverse_iterator	crend () const

Additional Inherited Members
Protected Member Functions inherited from Object
template<class T >
T	weak () const
template<class T >
void	initOnce ()
	Create the object state when called the first time.
template<class T >
void	initOncePerThread ()
	Create a distinct object state for each thread when called the first time in that thread.
	Object (State *newState)
	Initialize object with newState.
	Object (State *state, Alias)
	Object (State *state, Weak)
Object &	operator= (std::nullptr_t)
Static Protected Member Functions inherited from Object
template<class T >
static T	alias (const State *state)
	Create an alias object for the given state.
template<class T >
static T	weak (const State *state)
Protected Attributes inherited from Object
Handle< State >	me
	Internal object state

Detailed Description

Timezone information

See also

Date

Member Typedef Documentation

Item

using Item = TimeInfo

Timezone information record

Constructor & Destructor Documentation

Timezone() [1/2]

Timezone ( )

default

Create a null timezone file.

Timezone() [2/2]

Timezone ( const String & data )

explicit

Load timezone information from data (RFC 8536 format)

Exceptions

FormatError
InputExhaustion

Member Function Documentation

local()

Timezone local ( )

static

Get local timezone information.

offset()

static int offset ( double time )

static

Get the local UTC offset for time (in seconds)

date()

static Date date ( double time )

static

Create the local calendar date by breaking down time.

currentDate()

Date currentDate ( )

static

Create the local calendar date of the current system time.

nextTime()

double nextTime ( const Date & date, int hour, int minutes = 0, int seconds = 0 )

static

Get the next time matching the given day time.

Parameters

date	Date in the local timezone.
hour	Hour of the day (0..23)
minutes	Minutes (0..60)
seconds	Seconds (0..60)

Returns

The next time the local time hits the given day time

This method computes the next time at which the local time hits the giving hour, minutes and seconds. The local timezone and eventual change in daylight saving time is taken into account.

loadFromFile()

Timezone loadFromFile ( const String & path )

static

Load timezone information from path.

Exceptions

SystemError
FormatError
InputExhaustion

count()

long count

(

)

const

Number of time information entries

at()

const TimeInfo & at

(

long

i

)

const

Get time information entry at i.

operator[]()

const TimeInfo & operator[]

(

long

i

)

const

Get time information entry at i.

infoForTime()

const TimeInfo & infoForTime

(

double

time

)

const

Get time zone information for time.

operator()()

int operator()

(

double

time

)

const

Get UTF offset for time.