gtimezone.h 3.6 KB

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  1. /*
  2. * Copyright © 2010 Codethink Limited
  3. *
  4. * This library is free software; you can redistribute it and/or
  5. * modify it under the terms of the GNU Lesser General Public
  6. * License as published by the Free Software Foundation; either
  7. * version 2.1 of the License, or (at your option) any later version.
  8. *
  9. * This library is distributed in the hope that it will be useful, but
  10. * WITHOUT ANY WARRANTY; without even the implied warranty of
  11. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  12. * Lesser General Public License for more details.
  13. *
  14. * You should have received a copy of the GNU Lesser General Public
  15. * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  16. *
  17. * Author: Ryan Lortie <desrt@desrt.ca>
  18. */
  19. #ifndef __G_TIME_ZONE_H__
  20. #define __G_TIME_ZONE_H__
  21. #if !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
  22. #error "Only <glib.h> can be included directly."
  23. #endif
  24. #include <glib/gtypes.h>
  25. G_BEGIN_DECLS
  26. typedef struct _GTimeZone GTimeZone;
  27. /**
  28. * GTimeType:
  29. * @G_TIME_TYPE_STANDARD: the time is in local standard time
  30. * @G_TIME_TYPE_DAYLIGHT: the time is in local daylight time
  31. * @G_TIME_TYPE_UNIVERSAL: the time is in UTC
  32. *
  33. * Disambiguates a given time in two ways.
  34. *
  35. * First, specifies if the given time is in universal or local time.
  36. *
  37. * Second, if the time is in local time, specifies if it is local
  38. * standard time or local daylight time. This is important for the case
  39. * where the same local time occurs twice (during daylight savings time
  40. * transitions, for example).
  41. */
  42. typedef enum
  43. {
  44. G_TIME_TYPE_STANDARD,
  45. G_TIME_TYPE_DAYLIGHT,
  46. G_TIME_TYPE_UNIVERSAL
  47. } GTimeType;
  48. GLIB_AVAILABLE_IN_ALL
  49. GTimeZone * g_time_zone_new (const gchar *identifier);
  50. GLIB_AVAILABLE_IN_ALL
  51. GTimeZone * g_time_zone_new_utc (void);
  52. GLIB_AVAILABLE_IN_ALL
  53. GTimeZone * g_time_zone_new_local (void);
  54. GLIB_AVAILABLE_IN_2_58
  55. GTimeZone * g_time_zone_new_offset (gint32 seconds);
  56. GLIB_AVAILABLE_IN_ALL
  57. GTimeZone * g_time_zone_ref (GTimeZone *tz);
  58. GLIB_AVAILABLE_IN_ALL
  59. void g_time_zone_unref (GTimeZone *tz);
  60. GLIB_AVAILABLE_IN_ALL
  61. gint g_time_zone_find_interval (GTimeZone *tz,
  62. GTimeType type,
  63. gint64 time_);
  64. GLIB_AVAILABLE_IN_ALL
  65. gint g_time_zone_adjust_time (GTimeZone *tz,
  66. GTimeType type,
  67. gint64 *time_);
  68. GLIB_AVAILABLE_IN_ALL
  69. const gchar * g_time_zone_get_abbreviation (GTimeZone *tz,
  70. gint interval);
  71. GLIB_AVAILABLE_IN_ALL
  72. gint32 g_time_zone_get_offset (GTimeZone *tz,
  73. gint interval);
  74. GLIB_AVAILABLE_IN_ALL
  75. gboolean g_time_zone_is_dst (GTimeZone *tz,
  76. gint interval);
  77. GLIB_AVAILABLE_IN_2_58
  78. const gchar * g_time_zone_get_identifier (GTimeZone *tz);
  79. G_END_DECLS
  80. #endif /* __G_TIME_ZONE_H__ */