Data structures describe the low resolution zoneinfo persistence format. More...

#include <stdint.h>
#include <Arduino.h>
#include <AceCommon.h>
#include "compat.h"
#include "BrokerCommon.h"

Include dependency graph for ZoneInfoLow.h:

This graph shows which files directly or indirectly include this file:

Classes
class	ace_time::ZoneInfoLow

struct	ace_time::ZoneInfoLow::ZoneContext
	Metadata about the zone database. More...

struct	ace_time::ZoneInfoLow::ZoneRule
	A time zone transition rule. More...

struct	ace_time::ZoneInfoLow::ZonePolicy
	A collection of transition rules which describe the DST rules of a given administrative region. More...

struct	ace_time::ZoneInfoLow::ZoneEra
	An entry in ZoneInfo which describes which ZonePolicy was being followed during a particular time period. More...

struct	ace_time::ZoneInfoLow::ZoneInfo
	Representation of a given time zone, implemented as an array of ZoneEra records. More...

class	ace_time::ZoneInfoLow::ZoneContextBroker
	Data broker for accessing a ZoneContext. More...

class	ace_time::ZoneInfoLow::ZoneRuleBroker
	Data broker for accessing ZoneRule. More...

class	ace_time::ZoneInfoLow::ZonePolicyBroker
	Data broker for accessing ZonePolicy. More...

class	ace_time::ZoneInfoLow::ZoneEraBroker
	Data broker for accessing ZoneEra. More...

class	ace_time::ZoneInfoLow::ZoneInfoBroker
	Data broker for accessing ZoneInfo. More...

class	ace_time::ZoneInfoLow::ZoneRegistryBroker
	Data broker for accessing the ZoneRegistry. More...

class	ace_time::ZoneInfoLow::ZoneInfoStore
	A storage object that creates an ZoneInfoBroker from a key that identifies the ZoneInfo. More...

Detailed Description

Data structures describe the low resolution zoneinfo persistence format.

It has a 1-minute resolution for AT, UNTIL, STDOFF; 15-minute resolution for DST offsets. The year fields use a 1-byte offset from a baseYear which gives a [-127,+126] range.

The BrokersLow.h file provides an abtraction layer which converts these low-level fields into a semantically consistent API which can be used by the AceTime classes.

The various zoneinfo database files (e.g. zonedb, zonedbx, zonedbc) will use one of these persistence formats, as defined by infos.h.

See also DEVELOPER.md for an overview of the ZoneInfoXXX layer.

Definition in file ZoneInfoLow.h.

Classes

Detailed Description