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authornobody <nobody@localhost>2001-05-19 20:49:14 +0800
committernobody <nobody@localhost>2001-05-19 20:49:14 +0800
commit88afa58a5b1f01cbefd89795c4dab371fb31f9c3 (patch)
tree8ef1ebf263e35adadb85e8450c2559f6d9edc16b /calendar/cal-util/timeutil.c
parent0b11ddccb9aa109b28f69fefb790453b558a096c (diff)
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Diffstat (limited to 'calendar/cal-util/timeutil.c')
-rw-r--r--calendar/cal-util/timeutil.c385
1 files changed, 0 insertions, 385 deletions
diff --git a/calendar/cal-util/timeutil.c b/calendar/cal-util/timeutil.c
deleted file mode 100644
index 764ec5d078..0000000000
--- a/calendar/cal-util/timeutil.c
+++ /dev/null
@@ -1,385 +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 <ctype.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);
-}
-
-/**
- * isodate_from_time_t:
- * @t: A time value.
- *
- * Creates an ISO 8601 local time representation from a time value.
- *
- * Return value: String with the ISO 8601 representation of the local time.
- **/
-char *
-isodate_from_time_t (time_t t)
-{
- struct tm *tm;
- char isotime[40];
-
- tm = localtime (&t);
- strftime (isotime, sizeof (isotime)-1, "%Y%m%dT%H%M%S", tm);
- return g_strdup (isotime);
-}
-
-/**
- * time_from_isodate:
- * @str: Date/time value in ISO 8601 format.
- *
- * Converts an ISO 8601 time string into a time_t value.
- *
- * Return value: Time_t corresponding to the specified ISO string.
- **/
-time_t
-time_from_isodate (const char *str)
-{
- int len;
- struct tm my_tm;
- time_t t;
- int i;
-
- g_return_val_if_fail (str != NULL, -1);
-
- /* yyyymmdd[Thhmmss[Z]] */
-
- len = strlen (str);
-
- if (!(len == 8 || len == 15 || len == 16))
- return -1;
-
- for (i = 0; i < len; i++)
- if (!((i != 8 && i != 15 && isdigit (str[i]))
- || (i == 8 && str[i] == 'T')
- || (i == 15 && str[i] == 'Z')))
- return -1;
-
- memset (&my_tm, 0, sizeof (my_tm));
-
-#define digit_at(x,y) (x[y] - '0')
-
- my_tm.tm_year = (digit_at (str, 0) * 1000 + digit_at (str, 1) * 100 +
- digit_at (str, 2) * 10 + digit_at (str, 3)) - 1900;
-
- my_tm.tm_mon = digit_at (str, 4) * 10 + digit_at (str, 5) - 1;
- my_tm.tm_mday = digit_at (str, 6) * 10 + digit_at (str, 7);
-
- if (len > 8) {
- my_tm.tm_hour = digit_at (str, 9) * 10 + digit_at (str, 10);
- my_tm.tm_min = digit_at (str, 11) * 10 + digit_at (str, 12);
- my_tm.tm_sec = digit_at (str, 13) * 10 + digit_at (str, 14);
- }
-
- my_tm.tm_isdst = -1;
-
- t = mktime (&my_tm);
-
- if (len == 16) {
-#if defined(HAVE_TM_GMTOFF)
- t += my_tm.tm_gmtoff;
-#elif defined(HAVE_TIMEZONE)
- t -= timezone;
-#endif
- }
-
- return t;
-}
-
-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);
-}