/usr/include/glib-2.0/glib/gdate.h is in libglib2.0-dev 2.42.1-1+b1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 | /* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 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/>.
*/
/*
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
#ifndef __G_DATE_H__
#define __G_DATE_H__
#if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
#error "Only <glib.h> can be included directly."
#endif
#include <time.h>
#include <glib/gtypes.h>
#include <glib/gquark.h>
G_BEGIN_DECLS
/* GDate
*
* Date calculations (not time for now, to be resolved). These are a
* mutant combination of Steffen Beyer's DateCalc routines
* (http://www.perl.com/CPAN/authors/id/STBEY/) and Jon Trowbridge's
* date routines (written for in-house software). Written by Havoc
* Pennington <hp@pobox.com>
*/
typedef gint32 GTime;
typedef guint16 GDateYear;
typedef guint8 GDateDay; /* day of the month */
typedef struct _GDate GDate;
/* enum used to specify order of appearance in parsed date strings */
typedef enum
{
G_DATE_DAY = 0,
G_DATE_MONTH = 1,
G_DATE_YEAR = 2
} GDateDMY;
/* actual week and month values */
typedef enum
{
G_DATE_BAD_WEEKDAY = 0,
G_DATE_MONDAY = 1,
G_DATE_TUESDAY = 2,
G_DATE_WEDNESDAY = 3,
G_DATE_THURSDAY = 4,
G_DATE_FRIDAY = 5,
G_DATE_SATURDAY = 6,
G_DATE_SUNDAY = 7
} GDateWeekday;
typedef enum
{
G_DATE_BAD_MONTH = 0,
G_DATE_JANUARY = 1,
G_DATE_FEBRUARY = 2,
G_DATE_MARCH = 3,
G_DATE_APRIL = 4,
G_DATE_MAY = 5,
G_DATE_JUNE = 6,
G_DATE_JULY = 7,
G_DATE_AUGUST = 8,
G_DATE_SEPTEMBER = 9,
G_DATE_OCTOBER = 10,
G_DATE_NOVEMBER = 11,
G_DATE_DECEMBER = 12
} GDateMonth;
#define G_DATE_BAD_JULIAN 0U
#define G_DATE_BAD_DAY 0U
#define G_DATE_BAD_YEAR 0U
/* Note: directly manipulating structs is generally a bad idea, but
* in this case it's an *incredibly* bad idea, because all or part
* of this struct can be invalid at any given time. Use the functions,
* or you will get hosed, I promise.
*/
struct _GDate
{
guint julian_days : 32; /* julian days representation - we use a
* bitfield hoping that 64 bit platforms
* will pack this whole struct in one big
* int
*/
guint julian : 1; /* julian is valid */
guint dmy : 1; /* dmy is valid */
/* DMY representation */
guint day : 6;
guint month : 4;
guint year : 16;
};
/* g_date_new() returns an invalid date, you then have to _set() stuff
* to get a usable object. You can also allocate a GDate statically,
* then call g_date_clear() to initialize.
*/
GLIB_AVAILABLE_IN_ALL
GDate* g_date_new (void);
GLIB_AVAILABLE_IN_ALL
GDate* g_date_new_dmy (GDateDay day,
GDateMonth month,
GDateYear year);
GLIB_AVAILABLE_IN_ALL
GDate* g_date_new_julian (guint32 julian_day);
GLIB_AVAILABLE_IN_ALL
void g_date_free (GDate *date);
/* check g_date_valid() after doing an operation that might fail, like
* _parse. Almost all g_date operations are undefined on invalid
* dates (the exceptions are the mutators, since you need those to
* return to validity).
*/
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid (const GDate *date);
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid_day (GDateDay day) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid_month (GDateMonth month) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid_year (GDateYear year) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid_weekday (GDateWeekday weekday) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid_julian (guint32 julian_date) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
gboolean g_date_valid_dmy (GDateDay day,
GDateMonth month,
GDateYear year) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
GDateWeekday g_date_get_weekday (const GDate *date);
GLIB_AVAILABLE_IN_ALL
GDateMonth g_date_get_month (const GDate *date);
GLIB_AVAILABLE_IN_ALL
GDateYear g_date_get_year (const GDate *date);
GLIB_AVAILABLE_IN_ALL
GDateDay g_date_get_day (const GDate *date);
GLIB_AVAILABLE_IN_ALL
guint32 g_date_get_julian (const GDate *date);
GLIB_AVAILABLE_IN_ALL
guint g_date_get_day_of_year (const GDate *date);
/* First monday/sunday is the start of week 1; if we haven't reached
* that day, return 0. These are not ISO weeks of the year; that
* routine needs to be added.
* these functions return the number of weeks, starting on the
* corrsponding day
*/
GLIB_AVAILABLE_IN_ALL
guint g_date_get_monday_week_of_year (const GDate *date);
GLIB_AVAILABLE_IN_ALL
guint g_date_get_sunday_week_of_year (const GDate *date);
GLIB_AVAILABLE_IN_ALL
guint g_date_get_iso8601_week_of_year (const GDate *date);
/* If you create a static date struct you need to clear it to get it
* in a sane state before use. You can clear a whole array at
* once with the ndates argument.
*/
GLIB_AVAILABLE_IN_ALL
void g_date_clear (GDate *date,
guint n_dates);
/* The parse routine is meant for dates typed in by a user, so it
* permits many formats but tries to catch common typos. If your data
* needs to be strictly validated, it is not an appropriate function.
*/
GLIB_AVAILABLE_IN_ALL
void g_date_set_parse (GDate *date,
const gchar *str);
GLIB_AVAILABLE_IN_ALL
void g_date_set_time_t (GDate *date,
time_t timet);
GLIB_AVAILABLE_IN_ALL
void g_date_set_time_val (GDate *date,
GTimeVal *timeval);
#ifndef G_DISABLE_DEPRECATED
GLIB_DEPRECATED_FOR(g_date_set_time_t)
void g_date_set_time (GDate *date,
GTime time_);
#endif
GLIB_AVAILABLE_IN_ALL
void g_date_set_month (GDate *date,
GDateMonth month);
GLIB_AVAILABLE_IN_ALL
void g_date_set_day (GDate *date,
GDateDay day);
GLIB_AVAILABLE_IN_ALL
void g_date_set_year (GDate *date,
GDateYear year);
GLIB_AVAILABLE_IN_ALL
void g_date_set_dmy (GDate *date,
GDateDay day,
GDateMonth month,
GDateYear y);
GLIB_AVAILABLE_IN_ALL
void g_date_set_julian (GDate *date,
guint32 julian_date);
GLIB_AVAILABLE_IN_ALL
gboolean g_date_is_first_of_month (const GDate *date);
GLIB_AVAILABLE_IN_ALL
gboolean g_date_is_last_of_month (const GDate *date);
/* To go forward by some number of weeks just go forward weeks*7 days */
GLIB_AVAILABLE_IN_ALL
void g_date_add_days (GDate *date,
guint n_days);
GLIB_AVAILABLE_IN_ALL
void g_date_subtract_days (GDate *date,
guint n_days);
/* If you add/sub months while day > 28, the day might change */
GLIB_AVAILABLE_IN_ALL
void g_date_add_months (GDate *date,
guint n_months);
GLIB_AVAILABLE_IN_ALL
void g_date_subtract_months (GDate *date,
guint n_months);
/* If it's feb 29, changing years can move you to the 28th */
GLIB_AVAILABLE_IN_ALL
void g_date_add_years (GDate *date,
guint n_years);
GLIB_AVAILABLE_IN_ALL
void g_date_subtract_years (GDate *date,
guint n_years);
GLIB_AVAILABLE_IN_ALL
gboolean g_date_is_leap_year (GDateYear year) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
guint8 g_date_get_days_in_month (GDateMonth month,
GDateYear year) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
guint8 g_date_get_monday_weeks_in_year (GDateYear year) G_GNUC_CONST;
GLIB_AVAILABLE_IN_ALL
guint8 g_date_get_sunday_weeks_in_year (GDateYear year) G_GNUC_CONST;
/* Returns the number of days between the two dates. If date2 comes
before date1, a negative value is return. */
GLIB_AVAILABLE_IN_ALL
gint g_date_days_between (const GDate *date1,
const GDate *date2);
/* qsort-friendly (with a cast...) */
GLIB_AVAILABLE_IN_ALL
gint g_date_compare (const GDate *lhs,
const GDate *rhs);
GLIB_AVAILABLE_IN_ALL
void g_date_to_struct_tm (const GDate *date,
struct tm *tm);
GLIB_AVAILABLE_IN_ALL
void g_date_clamp (GDate *date,
const GDate *min_date,
const GDate *max_date);
/* Swap date1 and date2's values if date1 > date2. */
GLIB_AVAILABLE_IN_ALL
void g_date_order (GDate *date1, GDate *date2);
/* Just like strftime() except you can only use date-related formats.
* Using a time format is undefined.
*/
GLIB_AVAILABLE_IN_ALL
gsize g_date_strftime (gchar *s,
gsize slen,
const gchar *format,
const GDate *date);
#ifndef G_DISABLE_DEPRECATED
#define g_date_weekday g_date_get_weekday
#define g_date_month g_date_get_month
#define g_date_year g_date_get_year
#define g_date_day g_date_get_day
#define g_date_julian g_date_get_julian
#define g_date_day_of_year g_date_get_day_of_year
#define g_date_monday_week_of_year g_date_get_monday_week_of_year
#define g_date_sunday_week_of_year g_date_get_sunday_week_of_year
#define g_date_days_in_month g_date_get_days_in_month
#define g_date_monday_weeks_in_year g_date_get_monday_weeks_in_year
#define g_date_sunday_weeks_in_year g_date_get_sunday_weeks_in_year
#endif /* G_DISABLE_DEPRECATED */
G_END_DECLS
#endif /* __G_DATE_H__ */
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