aboutsummaryrefslogtreecommitdiffstats
path: root/calendar/cal-util/timeutil.c
diff options
context:
space:
mode:
Diffstat (limited to 'calendar/cal-util/timeutil.c')
-rw-r--r--calendar/cal-util/timeutil.c314
1 files changed, 0 insertions, 314 deletions
diff --git a/calendar/cal-util/timeutil.c b/calendar/cal-util/timeutil.c
deleted file mode 100644
index b48a02b5fa..0000000000
--- a/calendar/cal-util/timeutil.c
+++ /dev/null
@@ -1,314 +0,0 @@
-/* Miscellaneous time-related utilities
- *
- * Copyright (C) 1998 The Free Software Foundation
- * Copyright (C) 2000 Helix Code, Inc.
- * Copyright (C) 2000 Ximian, Inc.
- *
- * Authors: Federico Mena <federico@ximian.com>
- * Miguel de Icaza <miguel@ximian.com>
- */
-
-#include <string.h>
-#include <glib.h>
-#include "timeutil.h"
-
-
-
-void
-print_time_t (time_t t)
-{
- struct tm *tm = localtime (&t);
-
- printf ("%d/%02d/%02d %02d:%02d:%02d",
- 1900 + tm->tm_year, tm->tm_mon+1, tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-}
-
-char *
-isodate_from_time_t (time_t t)
-{
- struct tm *tm;
- static char isotime [40];
-
- tm = localtime (&t);
- strftime (isotime, sizeof (isotime)-1, "%Y%m%dT%H%M%S", tm);
- return isotime;
-}
-
-time_t
-time_add_minutes (time_t time, int minutes)
-{
- struct tm *tm = localtime (&time);
- time_t new_time;
-
- tm->tm_min += minutes;
- if ((new_time = mktime (tm)) == -1) {
- g_message ("time_add_minutes(): mktime() could not handle "
- "adding %d minutes with\n", minutes);
- print_time_t (time);
- printf ("\n");
- return time;
- }
- return new_time;
-}
-
-/* Adds a day onto the time, using local time.
- Note that if clocks go forward due to daylight savings time, there are
- some non-existent local times, so the hour may be changed to make it a
- valid time. This also means that it may not be wise to keep calling
- time_add_day() to step through a certain period - if the hour gets changed
- to make it valid time, any further calls to time_add_day() will also return
- this hour, which may not be what you want. */
-time_t
-time_add_day (time_t time, int days)
-{
- struct tm *tm = localtime (&time);
- time_t new_time;
-#if 0
- int dst_flag = tm->tm_isdst;
-#endif
-
- tm->tm_mday += days;
- tm->tm_isdst = -1;
-
- if ((new_time = mktime (tm)) == -1) {
- g_message ("time_add_day(): mktime() could not handling adding %d days with\n",
- days);
- print_time_t (time);
- printf ("\n");
- return time;
- }
-
-#if 0
- /* I don't know what this is for. See also time_day_begin() and
- time_day_end(). - Damon. */
- if (dst_flag > tm->tm_isdst) {
- tm->tm_hour++;
- new_time += 3600;
- } else if (dst_flag < tm->tm_isdst) {
- tm->tm_hour--;
- new_time -= 3600;
- }
-#endif
-
- return new_time;
-}
-
-time_t
-time_add_week (time_t time, int weeks)
-{
- return time_add_day (time, weeks * 7);
-}
-
-time_t
-time_add_month (time_t time, int months)
-{
- struct tm *tm = localtime (&time);
- time_t new_time;
- int mday;
-
- mday = tm->tm_mday;
-
- tm->tm_mon += months;
- tm->tm_isdst = -1;
- if ((new_time = mktime (tm)) == -1) {
- g_message ("time_add_month(): mktime() could not handling adding %d months with\n",
- months);
- print_time_t (time);
- printf ("\n");
- return time;
- }
- tm = localtime (&new_time);
- if (tm->tm_mday < mday) {
- tm->tm_mon--;
- tm->tm_mday = time_days_in_month (tm->tm_year+1900, tm->tm_mon);
- return new_time = mktime (tm);
- }
- else
- return new_time;
-}
-
-time_t
-time_add_year (time_t time, int years)
-{
- struct tm *tm = localtime (&time);
- time_t new_time;
-
- tm->tm_year += years;
- if ((new_time = mktime (tm)) == -1) {
- g_message ("time_add_year(): mktime() could not handling adding %d years with\n",
- years);
- print_time_t (time);
- printf ("\n");
- return time;
- }
- return new_time;
-}
-
-/* Number of days in a month, for normal and leap years */
-static const int days_in_month[2][12] = {
- { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
- { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
-};
-
-/* Returns whether the specified year is a leap year */
-static int
-is_leap_year (int year)
-{
- if (year <= 1752)
- return !(year % 4);
- else
- return (!(year % 4) && (year % 100)) || !(year % 400);
-}
-
-int
-time_days_in_month (int year, int month)
-{
- g_return_val_if_fail (year >= 1900, 0);
- g_return_val_if_fail ((month >= 0) && (month < 12), 0);
-
- return days_in_month [is_leap_year (year)][month];
-}
-
-time_t
-time_from_day (int year, int month, int day)
-{
- struct tm tm;
-
- memset (&tm, 0, sizeof (tm));
- tm.tm_year = year - 1900;
- tm.tm_mon = month;
- tm.tm_mday = day;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-time_t
-time_year_begin (time_t t)
-{
- struct tm tm;
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_mon = 0;
- tm.tm_mday = 1;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-time_t
-time_year_end (time_t t)
-{
- struct tm tm;
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_mon = 0;
- tm.tm_mday = 1;
- tm.tm_year++;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-time_t
-time_month_begin (time_t t)
-{
- struct tm tm;
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_mday = 1;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-time_t
-time_month_end (time_t t)
-{
- struct tm tm;
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_mday = 1;
- tm.tm_mon++;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-time_t
-time_week_begin (time_t t)
-{
- struct tm tm;
-
- /* FIXME: make it take week_starts_on_monday into account */
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_mday -= tm.tm_wday;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-time_t
-time_week_end (time_t t)
-{
- struct tm tm;
-
- /* FIXME: make it take week_starts_on_monday into account */
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_mday += 7 - tm.tm_wday;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-/* Returns the start of the day, according to the local time. */
-time_t
-time_day_begin (time_t t)
-{
- struct tm tm;
-
- tm = *localtime (&t);
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}
-
-/* Returns the end of the day, according to the local time. */
-time_t
-time_day_end (time_t t)
-{
- struct tm tm;
-
- tm = *localtime (&t);
- tm.tm_mday++;
- tm.tm_hour = 0;
- tm.tm_min = 0;
- tm.tm_sec = 0;
- tm.tm_isdst = -1;
-
- return mktime (&tm);
-}