php-src/ext/calendar/calendar.c
2003-08-31 20:45:51 +00:00

640 lines
17 KiB
C
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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 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: Shane Caraveo <shane@caraveo.com> |
| Colin Viebrock <colin@easydns.com> |
| Hartmut Holzgraefe <hholzgra@php.net> |
| Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef PHP_WIN32
#define _WINNLS_
#endif
#include "php.h"
#include "ext/standard/info.h"
#include "php_calendar.h"
#include "sdncal.h"
#include <stdio.h>
function_entry calendar_functions[] = {
PHP_FE(jdtogregorian, NULL)
PHP_FE(gregoriantojd, NULL)
PHP_FE(jdtojulian, NULL)
PHP_FE(juliantojd, NULL)
PHP_FE(jdtojewish, NULL)
PHP_FE(jewishtojd, NULL)
PHP_FE(jdtofrench, NULL)
PHP_FE(frenchtojd, NULL)
PHP_FE(jddayofweek, NULL)
PHP_FE(jdmonthname, NULL)
PHP_FE(easter_date, NULL)
PHP_FE(easter_days, NULL)
PHP_FE(unixtojd, NULL)
PHP_FE(jdtounix, NULL)
PHP_FE(cal_to_jd, NULL)
PHP_FE(cal_from_jd, NULL)
PHP_FE(cal_days_in_month, NULL)
PHP_FE(cal_info, NULL)
{NULL, NULL, NULL}
};
zend_module_entry calendar_module_entry = {
STANDARD_MODULE_HEADER,
"calendar",
calendar_functions,
PHP_MINIT(calendar),
NULL,
NULL,
NULL,
PHP_MINFO(calendar),
NO_VERSION_YET,
STANDARD_MODULE_PROPERTIES,
};
#ifdef COMPILE_DL_CALENDAR
ZEND_GET_MODULE(calendar)
#endif
/* this order must match the conversion table below */
enum cal_name_type_t {
CAL_GREGORIAN = 0,
CAL_JULIAN,
CAL_JEWISH,
CAL_FRENCH,
CAL_NUM_CALS
};
typedef long int (*cal_to_jd_func_t) (int month, int day, int year);
typedef void (*cal_from_jd_func_t) (long int jd, int *year, int *month, int *day);
typedef char *(*cal_as_string_func_t) (int year, int month, int day);
struct cal_entry_t {
char *name;
char *symbol;
cal_to_jd_func_t to_jd;
cal_from_jd_func_t from_jd;
int num_months;
int max_days_in_month;
char **month_name_short;
char **month_name_long;
};
static struct cal_entry_t cal_conversion_table[CAL_NUM_CALS] = {
{"Gregorian", "CAL_GREGORIAN", GregorianToSdn, SdnToGregorian, 12, 31,
MonthNameShort, MonthNameLong},
{"Julian", "CAL_JULIAN", JulianToSdn, SdnToJulian, 12, 31,
MonthNameShort, MonthNameLong},
{"Jewish", "CAL_JEWISH", JewishToSdn, SdnToJewish, 13, 30,
JewishMonthName, JewishMonthName},
{"French", "CAL_FRENCH", FrenchToSdn, SdnToFrench, 13, 30,
FrenchMonthName, FrenchMonthName}
};
/* For jddayofweek */
enum { CAL_DOW_DAYNO, CAL_DOW_SHORT, CAL_DOW_LONG };
/* For jdmonthname */
enum { CAL_MONTH_GREGORIAN_SHORT, CAL_MONTH_GREGORIAN_LONG,
CAL_MONTH_JULIAN_SHORT, CAL_MONTH_JULIAN_LONG, CAL_MONTH_JEWISH,
CAL_MONTH_FRENCH
};
/* for heb_number_to_chars */
static char alef_bet[25] = "0<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>";
#define CAL_JEWISH_ADD_ALAFIM_GERESH 0x2
#define CAL_JEWISH_ADD_ALAFIM 0x4
#define CAL_JEWISH_ADD_GERESHAYIM 0x8
PHP_MINIT_FUNCTION(calendar)
{
REGISTER_LONG_CONSTANT("CAL_GREGORIAN", CAL_GREGORIAN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_JULIAN", CAL_JULIAN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_JEWISH", CAL_JEWISH, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_FRENCH", CAL_FRENCH, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_NUM_CALS", CAL_NUM_CALS, CONST_CS | CONST_PERSISTENT);
/* constants for jddayofweek */
REGISTER_LONG_CONSTANT("CAL_DOW_DAYNO", CAL_DOW_DAYNO, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_DOW_SHORT", CAL_DOW_SHORT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_DOW_LONG", CAL_DOW_LONG, CONST_CS | CONST_PERSISTENT);
/* constants for jdmonthname */
REGISTER_LONG_CONSTANT("CAL_MONTH_GREGORIAN_SHORT", CAL_MONTH_GREGORIAN_SHORT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_MONTH_GREGORIAN_LONG", CAL_MONTH_GREGORIAN_LONG, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_MONTH_JULIAN_SHORT", CAL_MONTH_JULIAN_SHORT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_MONTH_JULIAN_LONG", CAL_MONTH_JULIAN_LONG, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_MONTH_JEWISH", CAL_MONTH_JEWISH, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_MONTH_FRENCH", CAL_MONTH_FRENCH, CONST_CS | CONST_PERSISTENT);
/* constants for easter calculation */
REGISTER_LONG_CONSTANT("CAL_EASTER_DEFAULT", CAL_EASTER_DEFAULT, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_EASTER_ROMAN", CAL_EASTER_ROMAN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_EASTER_ALWAYS_GREGORIAN", CAL_EASTER_ALWAYS_GREGORIAN, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_EASTER_ALWAYS_JULIAN", CAL_EASTER_ALWAYS_JULIAN, CONST_CS | CONST_PERSISTENT);
/* constants for Jewish date formatting */
REGISTER_LONG_CONSTANT("CAL_JEWISH_ADD_ALAFIM_GERESH", CAL_JEWISH_ADD_ALAFIM_GERESH, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_JEWISH_ADD_ALAFIM", CAL_JEWISH_ADD_ALAFIM, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("CAL_JEWISH_ADD_GERESHAYIM", CAL_JEWISH_ADD_GERESHAYIM, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
PHP_MINFO_FUNCTION(calendar)
{
php_info_print_table_start();
php_info_print_table_row(2, "Calendar support", "enabled");
php_info_print_table_end();
}
/* {{{ proto array cal_info(int calendar)
Returns information about a particular calendar */
PHP_FUNCTION(cal_info)
{
long cal;
zval *months, *smonths;
int i;
struct cal_entry_t *calendar;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &cal) == FAILURE) {
RETURN_FALSE;
}
if (cal < 0 || cal >= CAL_NUM_CALS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid calendar ID %ld.", cal);
RETURN_FALSE;
}
calendar = &cal_conversion_table[cal];
array_init(return_value);
MAKE_STD_ZVAL(months);
MAKE_STD_ZVAL(smonths);
array_init(months);
array_init(smonths);
for (i = 1; i <= calendar->num_months; i++) {
add_index_string(months, i, calendar->month_name_long[i], 1);
add_index_string(smonths, i, calendar->month_name_short[i], 1);
}
add_assoc_zval(return_value, "months", months);
add_assoc_zval(return_value, "abbrevmonths", smonths);
add_assoc_long(return_value, "maxdaysinmonth", calendar->max_days_in_month);
add_assoc_string(return_value, "calname", calendar->name, 1);
add_assoc_string(return_value, "calsymbol", calendar->symbol, 1);
}
/* }}} */
/* {{{ proto int cal_days_in_month(int calendar, int month, int year)
Returns the number of days in a month for a given year and calendar */
PHP_FUNCTION(cal_days_in_month)
{
long cal, month, year;
struct cal_entry_t *calendar;
long sdn_start, sdn_next;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &cal, &month, &year) == FAILURE) {
RETURN_FALSE;
}
if (cal < 0 || cal >= CAL_NUM_CALS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid calendar ID %ld.", cal);
RETURN_FALSE;
}
calendar = &cal_conversion_table[cal];
sdn_start = calendar->to_jd(year, month, 1);
sdn_next = calendar->to_jd(year, 1 + month, 1);
if (sdn_next == 0) {
/* if invalid, try first month of the next year... */
sdn_next = calendar->to_jd(year + 1, 1, 1);
}
RETURN_LONG(sdn_next - sdn_start);
}
/* }}} */
/* {{{ proto int cal_to_jd(int calendar, int month, int day, int year)
Converts from a supported calendar to Julian Day Count */
PHP_FUNCTION(cal_to_jd)
{
long cal, month, day, year, jdate;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "llll", &cal, &month, &day, &year) != SUCCESS) {
RETURN_FALSE;
}
if (cal < 0 || cal >= CAL_NUM_CALS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid calendar ID %ld.", cal);
RETURN_FALSE;
}
jdate = cal_conversion_table[cal].to_jd(year, month, day);
RETURN_LONG(jdate);
}
/* }}} */
/* {{{ proto array cal_from_jd(int jd, int calendar)
Converts from Julian Day Count to a supported calendar and return extended information */
PHP_FUNCTION(cal_from_jd)
{
long jd, cal;
int month, day, year, dow;
char date[16];
struct cal_entry_t *calendar;
if (zend_parse_parameters(ZEND_NUM_ARGS()TSRMLS_CC, "ll", &jd, &cal) == FAILURE) {
RETURN_FALSE;
}
if (cal < 0 || cal >= CAL_NUM_CALS) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid calendar ID %ld", cal);
RETURN_FALSE;
}
calendar = &cal_conversion_table[cal];
array_init(return_value);
calendar->from_jd(jd, &year, &month, &day);
sprintf(date, "%i/%i/%i", month, day, year);
add_assoc_string(return_value, "date", date, 1);
add_assoc_long(return_value, "month", month);
add_assoc_long(return_value, "day", day);
add_assoc_long(return_value, "year", year);
/* day of week */
dow = DayOfWeek(jd);
add_assoc_long(return_value, "dow", dow);
add_assoc_string(return_value, "abbrevdayname", DayNameShort[dow], 1);
add_assoc_string(return_value, "dayname", DayNameLong[dow], 1);
/* month name */
add_assoc_string(return_value, "abbrevmonth", calendar->month_name_short[month], 1);
add_assoc_string(return_value, "monthname", calendar->month_name_long[month], 1);
}
/* }}} */
/* {{{ proto string jdtogregorian(int juliandaycount)
Converts a julian day count to a gregorian calendar date */
PHP_FUNCTION(jdtogregorian)
{
long julday;
int year, month, day;
char date[10];
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &julday) == FAILURE) {
RETURN_FALSE;
}
SdnToGregorian(julday, &year, &month, &day);
sprintf(date, "%i/%i/%i", month, day, year);
RETURN_STRING(date, 1);
}
/* }}} */
/* {{{ proto int gregoriantojd(int month, int day, int year)
Converts a gregorian calendar date to julian day count */
PHP_FUNCTION(gregoriantojd)
{
long year, month, day;
int jdate;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &month, &day, &year) == FAILURE) {
RETURN_FALSE;
}
jdate = GregorianToSdn(year, month, day);
RETURN_LONG(jdate);
}
/* }}} */
/* {{{ proto string jdtojulian(int juliandaycount)
Convert a julian day count to a julian calendar date */
PHP_FUNCTION(jdtojulian)
{
long julday;
int year, month, day;
char date[10];
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &julday) == FAILURE) {
RETURN_FALSE;
}
SdnToJulian(julday, &year, &month, &day);
sprintf(date, "%i/%i/%i", month, day, year);
RETURN_STRING(date, 1);
}
/* }}} */
/* {{{ proto int juliantojd(int month, int day, int year)
Converts a julian calendar date to julian day count */
PHP_FUNCTION(juliantojd)
{
long year, month, day;
int jdate;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &month, &day, &year) == FAILURE) {
RETURN_FALSE;
}
jdate = JulianToSdn(year, month, day);
RETURN_LONG(jdate);
}
/* }}} */
/* {{{ heb_number_to_chars*/
/*
caution: the Hebrew format produces non unique result.
for example both: year '5' and year '5000' produce '<27>'.
use the numeric one for calculations.
*/
static char *heb_number_to_chars(int n, int fl, char **ret)
{
char *p, old[18], *endofalafim;
p = endofalafim = old;
/*
prevents the option breaking the jewish beliefs, and some other
critical resources ;)
*/
if (n > 9999 || n < 1) {
*ret = NULL;
return NULL;
}
/* alafim (thousands) case */
if (n / 1000) {
*p = alef_bet[n / 1000];
p++;
if (CAL_JEWISH_ADD_ALAFIM_GERESH & fl) {
*p = '\'';
p++;
}
if (CAL_JEWISH_ADD_ALAFIM & fl) {
strcpy(p, " <20><><EFBFBD><EFBFBD><EFBFBD> ");
p += 7;
}
endofalafim = p;
n = n % 1000;
}
/* tav-tav (tav=400) case */
while (n >= 400) {
*p = alef_bet[22];
p++;
n -= 400;
}
/* meot (hundreads) case */
if (n >= 100) {
*p = alef_bet[18 + n / 100];
p++;
n = n % 100;
}
/* tet-vav & tet-zain case (special case for 15 and 16) */
if (n == 15 || n == 16) {
*p = alef_bet[9];
p++;
*p = alef_bet[n - 9];
p++;
} else {
/* asarot (tens) case */
if (n >= 10) {
*p = alef_bet[9 + n / 10];
p++;
n = n % 10;
}
/* yehidot (ones) case */
if (n > 0) {
*p = alef_bet[n];
p++;
}
}
if (CAL_JEWISH_ADD_GERESHAYIM & fl) {
switch (p - endofalafim) {
case 0:
break;
case 1:
*p = '\'';
p++;
break;
default:
*(p) = *(p - 1);
*(p - 1) = '"';
p++;
}
}
*p = '\0';
*ret = estrndup(old, (p - old) + 1);
p = *ret;
return p;
}
/* }}} */
/* {{{ proto string jdtojewish(int juliandaycount [, bool hebrew [, int fl]])
Converts a julian day count to a jewish calendar date */
PHP_FUNCTION(jdtojewish)
{
long julday, fl = 0;
zend_bool heb = 0;
int year, month, day;
char date[10], hebdate[25];
char *dayp, *yearp;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|bl", &julday, &heb, &fl) == FAILURE) {
RETURN_FALSE;
}
SdnToJewish(julday, &year, &month, &day);
if (!heb) {
sprintf(date, "%i/%i/%i", month, day, year);
RETURN_STRING(date, 1);
} else {
if (year <= 0 || year > 9999) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Year out of range (0-9999).");
RETURN_FALSE;
}
sprintf(hebdate, "%s %s %s", heb_number_to_chars(day, fl, &dayp), JewishMonthHebName[month], heb_number_to_chars(year, fl, &yearp));
if (dayp) {
efree(dayp);
}
if (yearp) {
efree(yearp);
}
RETURN_STRING(hebdate, 1);
}
}
/* }}} */
/* {{{ proto int jewishtojd(int month, int day, int year)
Converts a jewish calendar date to a julian day count */
PHP_FUNCTION(jewishtojd)
{
long year, month, day;
int jdate;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &month, &day, &year) == FAILURE) {
RETURN_FALSE;
}
jdate = JewishToSdn(year, month, day);
RETURN_LONG(jdate);
}
/* }}} */
/* {{{ proto string jdtofrench(int juliandaycount)
Converts a julian day count to a french republic calendar date */
PHP_FUNCTION(jdtofrench)
{
long julday;
int year, month, day;
char date[10];
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l", &julday) == FAILURE) {
RETURN_FALSE;
}
SdnToFrench(julday, &year, &month, &day);
sprintf(date, "%i/%i/%i", month, day, year);
RETURN_STRING(date, 1);
}
/* }}} */
/* {{{ proto int frenchtojd(int month, int day, int year)
Converts a french republic calendar date to julian day count */
PHP_FUNCTION(frenchtojd)
{
long year, month, day;
int jdate;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "lll", &month, &day, &year) == FAILURE) {
RETURN_FALSE;
}
jdate = FrenchToSdn(year, month, day);
RETURN_LONG(jdate);
}
/* }}} */
/* {{{ proto mixed jddayofweek(int juliandaycount [, int mode])
Returns name or number of day of week from julian day count */
PHP_FUNCTION(jddayofweek)
{
long julday, mode = CAL_DOW_DAYNO;
int day;
char *daynamel, *daynames;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "l|l", &julday, &mode) == FAILURE) {
RETURN_FALSE;
}
day = DayOfWeek(julday);
daynamel = DayNameLong[day];
daynames = DayNameShort[day];
switch (mode) {
case CAL_DOW_SHORT:
RETURN_STRING(daynamel, 1);
break;
case CAL_DOW_LONG:
RETURN_STRING(daynames, 1);
break;
case CAL_DOW_DAYNO:
default:
RETURN_LONG(day);
break;
}
}
/* }}} */
/* {{{ proto string jdmonthname(int juliandaycount, int mode)
Returns name of month for julian day count */
PHP_FUNCTION(jdmonthname)
{
long julday, mode;
char *monthname = NULL;
int month, day, year;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ll", &julday, &mode) == FAILURE) {
RETURN_FALSE;
}
switch (mode) {
case CAL_MONTH_GREGORIAN_LONG: /* gregorian or julian month */
SdnToGregorian(julday, &year, &month, &day);
monthname = MonthNameLong[month];
break;
case CAL_MONTH_JULIAN_SHORT: /* gregorian or julian month */
SdnToJulian(julday, &year, &month, &day);
monthname = MonthNameShort[month];
break;
case CAL_MONTH_JULIAN_LONG: /* gregorian or julian month */
SdnToJulian(julday, &year, &month, &day);
monthname = MonthNameLong[month];
break;
case CAL_MONTH_JEWISH: /* jewish month */
SdnToJewish(julday, &year, &month, &day);
monthname = JewishMonthName[month];
break;
case CAL_MONTH_FRENCH: /* french month */
SdnToFrench(julday, &year, &month, &day);
monthname = FrenchMonthName[month];
break;
default: /* default gregorian */
case CAL_MONTH_GREGORIAN_SHORT: /* gregorian or julian month */
SdnToGregorian(julday, &year, &month, &day);
monthname = MonthNameShort[month];
break;
}
RETURN_STRING(monthname, 1);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/