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Diffstat (limited to 'calendar/cal-util/timeutil.c')
| -rw-r--r-- | calendar/cal-util/timeutil.c | 590 |
1 files changed, 0 insertions, 590 deletions
diff --git a/calendar/cal-util/timeutil.c b/calendar/cal-util/timeutil.c deleted file mode 100644 index bbce9b82d6..0000000000 --- a/calendar/cal-util/timeutil.c +++ /dev/null @@ -1,590 +0,0 @@ -/* Miscellaneous time-related utilities - * - * Copyright (C) 1998 The Free Software Foundation - * - * Authors: Federico Mena <federico@nuclecu.unam.mx> - * Miguel de Icaza <miguel@nuclecu.unam.mx> - */ - -#include <libgnome/libgnome.h> -#include <string.h> -#include "timeutil.h" - - - -/** - * time_from_icaltimetype: - * @itt: A struct icaltimetype value. - * - * Converts a struct icaltimetype value into a time_t value. Does not deal with - * timezones. - * - * Return value: A time_t value. - **/ -time_t -time_from_icaltimetype (struct icaltimetype itt) -{ - struct tm tm; - - /* FIXME: this does not handle timezones */ - - memset (&tm, 0, sizeof (tm)); - - tm.tm_year = itt.year - 1900; - tm.tm_mon = itt.month - 1; - tm.tm_mday = itt.day; - - if (!itt.is_date) { - tm.tm_hour = itt.hour; - tm.tm_min = itt.minute; - tm.tm_sec = itt.second; - } - - return mktime (&tm); -} - -#define digit_at(x,y) (x [y] - '0') - -time_t -time_from_isodate (char *str) -{ - struct tm my_tm; - time_t t; - - if (strlen (str) < 14) - return -1; - - 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); - 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 (str [15] == 'Z') -#if defined(HAVE_TM_GMTOFF) - t -= my_tm.tm_gmtoff -#elsif defined(HAVE_TIMEZONE) - t -= timezone -#endif - ; - - return t; -} - -void -print_time_t (time_t t) -{ - struct tm *tm = localtime (&t); - - printf ("TIEMPO: %d/%d/%d %d:%d:%d\n", - tm->tm_mon+1, tm->tm_mday, tm->tm_year, - tm->tm_hour, tm->tm_min, tm->tm_sec); -} - -int -get_time_t_hour (time_t t) -{ - struct tm *tm; - - tm = localtime (&t); - return tm->tm_hour; -} - -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_from_start_duration (time_t start, char *duration) -{ - printf ("Not yet implemented\n"); - return 0; -} - -char * -format_simple_hour (int hour, int use_am_pm) -{ - static char buf[256]; - - /* I don't know whether this is the best way to internationalize it. - * Does any language use different conventions? - Federico - */ - - if (use_am_pm) - g_snprintf (buf, sizeof(buf), "%d%s", - (hour == 0) ? 12 : (hour > 12) ? (hour - 12) : hour, - (hour < 12) ? _("am") : _("pm")); - else - g_snprintf (buf, sizeof(buf), "%02d%s", hour, _("h")); - - return buf; - -} - -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); - 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; - - 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); - 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); - 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); - return time; - } - return new_time; -} - -time_t -time_day_hour (time_t t, int hour) -{ - struct tm tm; - - tm = *localtime (&t); - tm.tm_hour = hour; - tm.tm_min = 0; - tm.tm_sec = 0; - - return mktime (&tm); -} - -/* 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) -{ -#if 1 - 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); - -#else - /* This is the original code which sometimes produces a time of 1:00. - I don't understand why it looked at the tm_isdst flags at all. - - Damon. */ - - struct tm tm; - time_t temp = t - 43200; - int dstflag, dstflag2; - - tm = *localtime(&temp); /* one day */ - dstflag = tm.tm_isdst; - - tm = *localtime (&t); - dstflag2 = tm.tm_isdst; - - if (dstflag < dstflag2) - tm.tm_hour = 1; - else - tm.tm_hour = 0; - - tm.tm_min = 0; - tm.tm_sec = 0; - - temp = mktime(&tm); - if (dstflag > dstflag2){ - temp += 3600; - } - - return temp; -#endif -} - -/* Returns the end of the day, according to the local time. */ -time_t -time_day_end (time_t t) -{ -#if 1 - 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); - -#else - /* This is the original code which has more problems than - time_day_begin(). - Damon. */ - - struct tm tm; - time_t temp; - int dstflag, dstflag2; - - t += 10800; - temp = t - 86400; - - tm = *localtime(&temp); /* one day */ - dstflag = tm.tm_isdst; - - tm = *localtime (&t); - dstflag2 = tm.tm_isdst; - - if (dstflag < dstflag2) - tm.tm_hour = 23; - else { - tm.tm_mday++; - tm.tm_hour = 0; - } - tm.tm_min = 0; - tm.tm_sec = 0; - - temp = mktime(&tm); - if(dstflag > dstflag2) { - } - return temp; -#endif -} - -static char * -pcat (char *dest, int num, char key) -{ - int c; - - c = sprintf (dest, "%d%c", num, key); - return dest + c; -} - -/* Converts secs into the ISO difftime representation */ -char * -isodiff_from_secs (int secs) -{ - static char buffer [60], *p; - int years, months, weeks, days, hours, minutes; - - years = months = weeks = days = hours = minutes = 0; - - years = secs / (365 * 86400); - secs %= (365 * 86400); - months = secs / (30 * 86400); - secs %= (30 * 86400); - weeks = secs / (7 * 86400); - secs %= (7 * 86400); - days = secs / 86400; - secs %= 86400; - hours = secs / 3600; - secs %= 3600; - minutes = secs / 60; - secs %= 60; - - strcpy (buffer, "P"); - p = buffer + 1; - if (years) - p = pcat (p, years, 'Y'); - if (months) - p = pcat (p, months, 'M'); - if (weeks) - p = pcat (p, weeks, 'W'); - if (days) - p = pcat (p, days, 'D'); - if (hours || minutes || secs){ - *p++ = 'T'; - if (hours) - p = pcat (p, hours, 'H'); - if (minutes) - p = pcat (p, minutes, 'M'); - if (secs) - p = pcat (p, secs, 'S'); - } - - return buffer; -} - -int -isodiff_to_secs (char *str) -{ - int value, time; - int years, months, weeks, days, hours, minutes, seconds; - - value = years = months = weeks = days = hours = minutes = time = seconds = 0; - if (*str != 'P') - return 0; - - str++; - while (*str){ - switch (*str){ - case '0': case '1': case '2': case '3': case '4': - case '5': case '6': case '7': case '8': case '9': - value = value * 10 + (*str - '0'); - break; - case 'Y': - years = value; value = 0; - break; - case 'M': - if (time) - minutes = value; - else - months = value; - value = 0; - break; - case 'W': - weeks = value; value = 0; - break; - case 'D': - days = value; value = 0; - break; - case 'T': - value = 0; time = 1; - break; - case 'H': - hours = value; value = 0; - break; - case 'S': - seconds = value; value = 0; - break; - } - str++; - } - return seconds + (minutes * 60) + (hours * 3600) + - (days * 86400) + (weeks * 7 * 86400) + - (months * 30 * 86400) + (years * 365 * 86400); -} |