glib/glib/gtimezone.h
2011-04-11 13:20:55 -04:00

84 lines
3.4 KiB
C

/*
* Copyright © 2010 Codethink Limited
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2 of the
* licence, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*
* Author: Ryan Lortie <desrt@desrt.ca>
*/
#if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif
#ifndef __G_TIME_ZONE_H__
#define __G_TIME_ZONE_H__
#include <glib/gtypes.h>
G_BEGIN_DECLS
typedef struct _GTimeZone GTimeZone;
/**
* GTimeType:
* @G_TIME_TYPE_STANDARD: the time is in local standard time
* @G_TIME_TYPE_DAYLIGHT: the time is in local daylight time
* @G_TIME_TYPE_UNIVERSAL: the time is in UTC
*
* Disambiguates a given time in two ways.
*
* First, specifies if the given time is in universal or local time.
*
* Second, if the time is in local time, specifies if it is local
* standard time or local daylight time. This is important for the case
* where the same local time occurs twice (during daylight savings time
* transitions, for example).
*/
typedef enum
{
G_TIME_TYPE_STANDARD,
G_TIME_TYPE_DAYLIGHT,
G_TIME_TYPE_UNIVERSAL
} GTimeType;
void g_time_zone_refresh_local (void);
GTimeZone * g_time_zone_new (const gchar *identifier);
GTimeZone * g_time_zone_new_utc (void);
GTimeZone * g_time_zone_new_local (void);
GTimeZone * g_time_zone_ref (GTimeZone *tz);
void g_time_zone_unref (GTimeZone *tz);
gint g_time_zone_find_interval (GTimeZone *tz,
GTimeType type,
gint64 time_);
gint g_time_zone_adjust_time (GTimeZone *tz,
GTimeType type,
gint64 *time_);
const gchar * g_time_zone_get_abbreviation (GTimeZone *tz,
gint interval);
gint32 g_time_zone_get_offset (GTimeZone *tz,
gint interval);
gboolean g_time_zone_is_dst (GTimeZone *tz,
gint interval);
G_END_DECLS
#endif /* __G_TIME_ZONE_H__ */