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/*
* Copyright 2023 GNOME Foundation Inc.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* 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 2.1 of the License, 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, see <http://www.gnu.org/licenses/>.
*
* Authors:
* - Philip Withnall <pwithnall@gnome.org>
*/
#pragma once
#include "glib.h"
G_BEGIN_DECLS
/**
* GEraDate:
* @type: the type of date
* @year: year of the date, in the Gregorian calendar
* @month: month of the date, in the Gregorian calendar
* @day: day of the date, in the Gregorian calendar
*
* A date from a #GEraDescriptionSegment.
*
* If @type is %G_ERA_DATE_SET, @year, @month and @day are valid. Otherwise,
* they are undefined.
*
* Since: 2.80
*/
typedef struct {
enum {
G_ERA_DATE_SET,
G_ERA_DATE_PLUS_INFINITY,
G_ERA_DATE_MINUS_INFINITY,
} type;
int year;
int month;
int day;
} GEraDate;
int _g_era_date_compare (const GEraDate *date1,
const GEraDate *date2);
/**
* GEraDescriptionSegment:
* @ref_count: reference count
* @direction_multiplier: `-1` or `1` depending on the order of @start_date and
* @end_date
* @offset: offset of the first year in the era
* @start_date: start date (in the Gregorian calendar) of the era
* @end_date: end date (in the Gregorian calendar) of the era
* @era_name: (not nullable): name of the era
* @era_format: (not nullable): format string to use for `%EY`
*
* A segment of an `ERA` description string, describing a single era. See
* [`nl_langinfo(3)`](man:nl_langinfo(3)).
*
* Since: 2.80
*/
typedef struct {
gatomicrefcount ref_count;
int direction_multiplier;
guint64 offset;
GEraDate start_date; /* inclusive */
GEraDate end_date; /* inclusive */
char *era_name; /* UTF-8 encoded */
char *era_format; /* UTF-8 encoded */
} GEraDescriptionSegment;
GPtrArray *_g_era_description_parse (const char *desc);
GEraDescriptionSegment *_g_era_description_segment_ref (GEraDescriptionSegment *segment);
void _g_era_description_segment_unref (GEraDescriptionSegment *segment);
G_END_DECLS
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