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Jack Jansen:

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This patch is a workaround for Macintosh, where the GUSI I/O library
(time, stat, etc) use the MacOS epoch of 1-Jan-1904 and the MSL C
library (ctime, localtime, etc) uses the (apparently ANSI standard)
epoch of 1-Jan-1900. Python programs see the MacOS epoch and we
convert values when needed.
This commit is contained in:
Guido van Rossum 2000-04-26 20:40:13 +00:00
parent 9e392e2412
commit c410e92974
1 changed files with 17 additions and 0 deletions
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17
Modules/timemodule.c
View file

@ -41,6 +41,14 @@ PERFORMANCE OF THIS SOFTWARE.
#ifdef macintosh
#include <time.h>
#include <OSUtils.h>
#ifdef USE_GUSI2
/* GUSI, the I/O library which has the time() function and such uses the
** Mac epoch of 1904. MSL, the C library which has localtime() and so uses
** the ANSI epoch of 1900.
*/
#define GUSI_TO_MSL_EPOCH (4*365*24*60*60)
#endif /* USE_GUSI2 */
#else
#include <sys/types.h>
#endif
@ -271,6 +279,9 @@ time_convert(when, function)
{
struct tm *p;
errno = 0;
#if defined(macintosh) && defined(USE_GUSI2)
when = when + GUSI_TO_MSL_EPOCH;
#endif
p = function(&when);
if (p == NULL) {
#ifdef EINVAL
@ -480,6 +491,9 @@ time_ctime(self, args)
if (!PyArg_Parse(args, "d", &dt))
return NULL;
tt = (time_t)dt;
#if defined(macintosh) && defined(USE_GUSI2)
tt = tt + GUSI_TO_MSL_EPOCH;
#endif
p = ctime(&tt);
if (p == NULL) {
PyErr_SetString(PyExc_ValueError, "unconvertible time");
@ -517,6 +531,9 @@ time_mktime(self, args)
"mktime argument out of range");
return NULL;
}
#if defined(macintosh) && defined(USE_GUSI2)
tt = tt - GUSI_TO_MSL_EPOCH;
#endif
return PyFloat_FromDouble((double)tt);
}