glib/gdatetime.h

   1 /*
   2  * Copyright (C) 2009-2010 Christian Hergert <chris@dronelabs.com>
   3  * Copyright © 2010 Codethink Limited
   4  *
   5  * This library is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU Lesser General Public License as
   7  * published by the Free Software Foundation; either version 2.1 of the
   8  * licence, or (at your option) any later version.
   9  *
  10  * This is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  13  * License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
  18  * USA.
  19  *
  20  * Authors: Christian Hergert <chris@dronelabs.com>
  21  *          Thiago Santos <thiago.sousa.santos@collabora.co.uk>
  22  *          Emmanuele Bassi <ebassi@linux.intel.com>
  23  *          Ryan Lortie <desrt@desrt.ca>
  24  */
  25
  26 #ifndef __G_DATE_TIME_H__
  27 #define __G_DATE_TIME_H__
  28
  29 #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  30 #error "Only <glib.h> can be included directly."
  31 #endif
  32
  33 #include <glib/gtimezone.h>
  34
  35 G_BEGIN_DECLS
  36
  37 /**
  38  * G_TIME_SPAN_DAY:
  39  *
  40  * Evaluates to a time span of one day.
  41  *
  42  * Since: 2.26
  43  */
  44 #define G_TIME_SPAN_DAY                 (G_GINT64_CONSTANT (86400000000))
  45
  46 /**
  47  * G_TIME_SPAN_HOUR:
  48  *
  49  * Evaluates to a time span of one hour.
  50  *
  51  * Since: 2.26
  52  */
  53 #define G_TIME_SPAN_HOUR                (G_GINT64_CONSTANT (3600000000))
  54
  55 /**
  56  * G_TIME_SPAN_MINUTE:
  57  *
  58  * Evaluates to a time span of one minute.
  59  *
  60  * Since: 2.26
  61  */
  62 #define G_TIME_SPAN_MINUTE              (G_GINT64_CONSTANT (60000000))
  63
  64 /**
  65  * G_TIME_SPAN_SECOND:
  66  *
  67  * Evaluates to a time span of one second.
  68  *
  69  * Since: 2.26
  70  */
  71 #define G_TIME_SPAN_SECOND              (G_GINT64_CONSTANT (1000000))
  72
  73 /**
  74  * G_TIME_SPAN_MILLISECOND:
  75  *
  76  * Evaluates to a time span of one millisecond.
  77  *
  78  * Since: 2.26
  79  */
  80 #define G_TIME_SPAN_MILLISECOND         (G_GINT64_CONSTANT (1000))
  81
  82 /**
  83  * GTimeSpan:
  84  *
  85  * A value representing an interval of time, in microseconds.
  86  *
  87  * Since: 2.26
  88  */
  89 typedef gint64 GTimeSpan;
  90
  91 /**
  92  * GDateTime:
  93  *
  94  * <structname>GDateTime</structname> is an opaque structure whose members
  95  * cannot be accessed directly.
  96  *
  97  * Since: 2.26
  98  */
  99 typedef struct _GDateTime GDateTime;
 100
 101 void                    g_date_time_unref                               (GDateTime      *datetime);
 102 GDateTime *             g_date_time_ref                                 (GDateTime      *datetime);
 103
 104 GDateTime *             g_date_time_new_now                             (GTimeZone      *tz);
 105 GDateTime *             g_date_time_new_now_local                       (void);
 106 GDateTime *             g_date_time_new_now_utc                         (void);
 107
 108 GDateTime *             g_date_time_new_from_unix_local                 (gint64          t);
 109 GDateTime *             g_date_time_new_from_unix_utc                   (gint64          t);
 110
 111 GDateTime *             g_date_time_new_from_timeval_local              (const GTimeVal *tv);
 112 GDateTime *             g_date_time_new_from_timeval_utc                (const GTimeVal *tv);
 113
 114 GDateTime *             g_date_time_new                                 (GTimeZone      *tz,
 115                                                                          gint            year,
 116                                                                          gint            month,
 117                                                                          gint            day,
 118                                                                          gint            hour,
 119                                                                          gint            minute,
 120                                                                          gdouble         seconds);
 121 GDateTime *             g_date_time_new_local                           (gint            year,
 122                                                                          gint            month,
 123                                                                          gint            day,
 124                                                                          gint            hour,
 125                                                                          gint            minute,
 126                                                                          gdouble         seconds);
 127 GDateTime *             g_date_time_new_utc                             (gint            year,
 128                                                                          gint            month,
 129                                                                          gint            day,
 130                                                                          gint            hour,
 131                                                                          gint            minute,
 132                                                                          gdouble         seconds);
 133
 134 G_GNUC_WARN_UNUSED_RESULT
 135 GDateTime *             g_date_time_add                                 (GDateTime      *datetime,
 136                                                                          GTimeSpan       timespan);
 137
 138 G_GNUC_WARN_UNUSED_RESULT
 139 GDateTime *             g_date_time_add_years                           (GDateTime      *datetime,
 140                                                                          gint            years);
 141 G_GNUC_WARN_UNUSED_RESULT
 142 GDateTime *             g_date_time_add_months                          (GDateTime      *datetime,
 143                                                                          gint            months);
 144 G_GNUC_WARN_UNUSED_RESULT
 145 GDateTime *             g_date_time_add_weeks                           (GDateTime      *datetime,
 146                                                                          gint            weeks);
 147 G_GNUC_WARN_UNUSED_RESULT
 148 GDateTime *             g_date_time_add_days                            (GDateTime      *datetime,
 149                                                                          gint            days);
 150
 151 G_GNUC_WARN_UNUSED_RESULT
 152 GDateTime *             g_date_time_add_hours                           (GDateTime      *datetime,
 153                                                                          gint            hours);
 154 G_GNUC_WARN_UNUSED_RESULT
 155 GDateTime *             g_date_time_add_minutes                         (GDateTime      *datetime,
 156                                                                          gint            minutes);
 157 G_GNUC_WARN_UNUSED_RESULT
 158 GDateTime *             g_date_time_add_seconds                         (GDateTime      *datetime,
 159                                                                          gdouble         seconds);
 160
 161 G_GNUC_WARN_UNUSED_RESULT
 162 GDateTime *             g_date_time_add_full                            (GDateTime      *datetime,
 163                                                                          gint            years,
 164                                                                          gint            months,
 165                                                                          gint            days,
 166                                                                          gint            hours,
 167                                                                          gint            minutes,
 168                                                                          gdouble         seconds);
 169
 170 gint                    g_date_time_compare                             (gconstpointer   dt1,
 171                                                                          gconstpointer   dt2);
 172 GTimeSpan               g_date_time_difference                          (GDateTime      *end,
 173                                                                          GDateTime      *begin);
 174 guint                   g_date_time_hash                                (gconstpointer   datetime);
 175 gboolean                g_date_time_equal                               (gconstpointer   dt1,
 176                                                                          gconstpointer   dt2);
 177
 178 void                    g_date_time_get_ymd                             (GDateTime      *datetime,
 179                                                                          gint           *year,
 180                                                                          gint           *month,
 181                                                                          gint           *day);
 182
 183 gint                    g_date_time_get_year                            (GDateTime      *datetime);
 184 gint                    g_date_time_get_month                           (GDateTime      *datetime);
 185 gint                    g_date_time_get_day_of_month                    (GDateTime      *datetime);
 186
 187 gint                    g_date_time_get_week_numbering_year             (GDateTime      *datetime);
 188 gint                    g_date_time_get_week_of_year                    (GDateTime      *datetime);
 189 gint                    g_date_time_get_day_of_week                     (GDateTime      *datetime);
 190
 191 gint                    g_date_time_get_day_of_year                     (GDateTime      *datetime);
 192
 193 gint                    g_date_time_get_hour                            (GDateTime      *datetime);
 194 gint                    g_date_time_get_minute                          (GDateTime      *datetime);
 195 gint                    g_date_time_get_second                          (GDateTime      *datetime);
 196 gint                    g_date_time_get_microsecond                     (GDateTime      *datetime);
 197 gdouble                 g_date_time_get_seconds                         (GDateTime      *datetime);
 198
 199 gint64                  g_date_time_to_unix                             (GDateTime      *datetime);
 200 gboolean                g_date_time_to_timeval                          (GDateTime      *datetime,
 201                                                                          GTimeVal       *tv);
 202
 203 GTimeSpan               g_date_time_get_utc_offset                      (GDateTime      *datetime);
 204 const gchar *           g_date_time_get_timezone_abbreviation           (GDateTime      *datetime);
 205 gboolean                g_date_time_is_daylight_savings                 (GDateTime      *datetime);
 206
 207 GDateTime *             g_date_time_to_timezone                         (GDateTime      *datetime,
 208                                                                          GTimeZone      *tz);
 209 GDateTime *             g_date_time_to_local                            (GDateTime      *datetime);
 210 GDateTime *             g_date_time_to_utc                              (GDateTime      *datetime);
 211
 212 gchar *                 g_date_time_format                              (GDateTime      *datetime,
 213                                                                          const gchar    *format) G_GNUC_MALLOC;
 214
 215 G_END_DECLS
 216
 217 #endif /* __G_DATE_TIME_H__ */