diff options
Diffstat (limited to 'ext/date/lib/dow.c')
| -rw-r--r-- | ext/date/lib/dow.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/ext/date/lib/dow.c b/ext/date/lib/dow.c deleted file mode 100644 index 0c71c2dc6a..0000000000 --- a/ext/date/lib/dow.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - +----------------------------------------------------------------------+ - | PHP Version 5 | - +----------------------------------------------------------------------+ - | Copyright (c) 1997-2005 The PHP Group | - +----------------------------------------------------------------------+ - | This source file is subject to version 3.0 of the PHP license, | - | that is bundled with this package in the file LICENSE, and is | - | available through the world-wide-web at the following url: | - | http://www.php.net/license/3_0.txt. | - | If you did not receive a copy of the PHP license and are unable to | - | obtain it through the world-wide-web, please send a note to | - | license@php.net so we can mail you a copy immediately. | - +----------------------------------------------------------------------+ - | Authors: Derick Rethans <derick@derickrethans.nl> | - +----------------------------------------------------------------------+ - */ - -/* $Id$ */ - -#include "timelib.h" - -static int m_table_common[13] = { -1, 0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5 }; /* 1 = jan */ -static int m_table_leap[13] = { -1, 6, 2, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5 }; /* 1 = jan */ - -static timelib_sll century_value(timelib_sll j) -{ - timelib_sll i = j - 17; - timelib_sll c = (4 - i * 2 + (i + 1) / 4) % 7; - - return c < 0 ? c + 7 : c; -} - -static timelib_sll timelib_day_of_week_ex(timelib_sll y, timelib_sll m, timelib_sll d, int iso) -{ - timelib_sll c1, y1, m1, dow; - - /* Only valid for Gregorian calendar */ - if (y < 1753) { - return -1; - } - c1 = century_value(y / 100); - y1 = (y % 100); - m1 = timelib_is_leap(y) ? m_table_leap[m] : m_table_common[m]; - dow = (c1 + y1 + m1 + (y1 / 4) + d) % 7; - if (iso) { - if (dow == 0) { - dow = 7; - } - } - return dow; -} - -timelib_sll timelib_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d) -{ - return timelib_day_of_week_ex(y, m, d, 0); -} - -timelib_sll timelib_iso_day_of_week(timelib_sll y, timelib_sll m, timelib_sll d) -{ - return timelib_day_of_week_ex(y, m, d, 1); -} - - /* jan feb mar apr may jun jul aug sep oct nov dec */ -static int d_table_common[13] = { 0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 }; -static int d_table_leap[13] = { 0, 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 }; -static int ml_table_common[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; -static int ml_table_leap[13] = { 0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; - -timelib_sll timelib_day_of_year(timelib_sll y, timelib_sll m, timelib_sll d) -{ - return (timelib_is_leap(y) ? d_table_leap[m] : d_table_common[m]) + d - 1; -} - -timelib_sll timelib_days_in_month(timelib_sll y, timelib_sll m) -{ - return timelib_is_leap(y) ? ml_table_leap[m] : ml_table_common[m]; -} - -void timelib_isoweek_from_date(timelib_sll y, timelib_sll m, timelib_sll d, timelib_sll *iw, timelib_sll *iy) -{ - int y_leap, prev_y_leap, doy, jan1weekday, weekday; - - y_leap = timelib_is_leap(y); - prev_y_leap = timelib_is_leap(y-1); - doy = timelib_day_of_year(y, m, d) + 1; - if (y_leap && m > 2) { - doy++; - } - jan1weekday = timelib_day_of_week(y, 1, 1); - weekday = timelib_day_of_week(y, m, d); - if (weekday == 0) weekday = 7; - if (jan1weekday == 0) jan1weekday = 7; - /* Find if Y M D falls in YearNumber Y-1, WeekNumber 52 or 53 */ - if (doy <= (8 - jan1weekday) && jan1weekday > 4) { - *iy = y - 1; - if (jan1weekday == 5 || (jan1weekday == 6 && prev_y_leap)) { - *iw = 53; - } else { - *iw = 52; - } - } else { - *iy = y; - } - /* 8. Find if Y M D falls in YearNumber Y+1, WeekNumber 1 */ - if (*iy == y) { - int i; - - i = y_leap ? 366 : 365; - if ((i - (doy - y_leap)) < (4 - weekday)) { - *iy = y + 1; - *iw = 1; - return; - } - } - /* 9. Find if Y M D falls in YearNumber Y, WeekNumber 1 through 53 */ - if (*iy == y) { - int j; - - j = doy + (7 - weekday) + (jan1weekday - 1); - *iw = j / 7; - if (jan1weekday > 4) { - *iw -= 1; - } - } -} - -timelib_sll timelib_daynr_from_weeknr(timelib_sll y, timelib_sll w, timelib_sll d) -{ - timelib_sll dow, day; - - /* Figure out the dayofweek for y-1-1 */ - dow = timelib_day_of_week(y, 1, 1); - /* then use that to figure out the offset for day 1 of week 1 */ - day = 0 - (dow > 4 ? dow - 7 : dow); - - /* Add weeks and days */ - return day + ((w - 1) * 7) + d; -} - -#if 0 -int main(void) -{ - printf("dow = %d\n", timelib_day_of_week(1978, 12, 22)); /* 5 */ - printf("dow = %d\n", timelib_day_of_week(2005, 2, 19)); /* 6 */ -} -#endif |