From 0cca49e2662d0f61cc50206b55444ba5d657cb9a Mon Sep 17 00:00:00 2001 From: nobody Date: Tue, 22 May 2001 18:44:11 +0000 Subject: This commit was manufactured by cvs2svn to create tag 'GNOME_LIBS_1_4_1_4'. svn path=/tags/GNOME_LIBS_1_4_1_4/; revision=9929 --- calendar/cal-util/timeutil.c | 385 ------------------------------------------- 1 file changed, 385 deletions(-) delete mode 100644 calendar/cal-util/timeutil.c (limited to 'calendar/cal-util/timeutil.c') 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 - * Miguel de Icaza - */ - -#include -#include -#include -#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); -} -- cgit v1.2.3