#ifdef __cplusplus
extern "C" {
#endif
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include <time.h>
#ifdef __cplusplus
}
#endif
/* XXX struct tm on some systems (SunOS4/BSD) contains extra (non POSIX)
* fields for which we don't have Configure support prior to Perl 5.8.0:
* char *tm_zone; -- abbreviation of timezone name
* long tm_gmtoff; -- offset from GMT in seconds
* To workaround core dumps from the uninitialised tm_zone we get the
* system to give us a reasonable struct to copy. This fix means that
* strftime uses the tm_zone and tm_gmtoff values returned by
* localtime(time()). That should give the desired result most of the
* time. But probably not always!
*
* This is a vestigial workaround for Perls prior to 5.8.0. We now
* rely on the initialization (still likely a workaround) in util.c.
*/
#if !defined(PERL_VERSION) || PERL_VERSION < 8
#if defined(HAS_GNULIBC)
# ifndef STRUCT_TM_HASZONE
# define STRUCT_TM_HASZONE
# else
# define USE_TM_GMTOFF
# endif
#endif
#endif /* end of pre-5.8 */
#define DAYS_PER_YEAR 365
#define DAYS_PER_QYEAR (4*DAYS_PER_YEAR+1)
#define DAYS_PER_CENT (25*DAYS_PER_QYEAR-1)
#define DAYS_PER_QCENT (4*DAYS_PER_CENT+1)
#define SECS_PER_HOUR (60*60)
#define SECS_PER_DAY (24*SECS_PER_HOUR)
/* parentheses deliberately absent on these two, otherwise they don't work */
#define MONTH_TO_DAYS 153/5
#define DAYS_TO_MONTH 5/153
/* offset to bias by March (month 4) 1st between month/mday & year finding */
#define YEAR_ADJUST (4*MONTH_TO_DAYS+1)
/* as used here, the algorithm leaves Sunday as day 1 unless we adjust it */
#define WEEKDAY_BIAS 6 /* (1+6)%7 makes Sunday 0 again */
#if !defined(PERL_VERSION) || PERL_VERSION < 8
#ifdef STRUCT_TM_HASZONE
static void
my_init_tm(struct tm *ptm) /* see mktime, strftime and asctime */
{
Time_t now;
(void)time(&now);
Copy(localtime(&now), ptm, 1, struct tm);
}
#else
# define my_init_tm(ptm)
#endif
#else
/* use core version from util.c in 5.8.0 and later */
# define my_init_tm init_tm
#endif
#ifdef WIN32
/*
* (1) The CRT maintains its own copy of the environment, separate from
* the Win32API copy.
*
* (2) CRT getenv() retrieves from this copy. CRT putenv() updates this
* copy, and then calls SetEnvironmentVariableA() to update the Win32API
* copy.
*
* (3) win32_getenv() and win32_putenv() call GetEnvironmentVariableA() and
* SetEnvironmentVariableA() directly, bypassing the CRT copy of the
* environment.
*
* (4) The CRT strftime() "%Z" implementation calls __tzset(). That
* calls CRT tzset(), but only the first time it is called, and in turn
* that uses CRT getenv("TZ") to retrieve the timezone info from the CRT
* local copy of the environment and hence gets the original setting as
* perl never updates the CRT copy when assigning to $ENV{TZ}.
*
* Therefore, we need to retrieve the value of $ENV{TZ} and call CRT
* putenv() to update the CRT copy of the environment (if it is different)
* whenever we're about to call tzset().
*
* In addition to all that, when perl is built with PERL_IMPLICIT_SYS
* defined:
*
* (a) Each interpreter has its own copy of the environment inside the
* perlhost structure. That allows applications that host multiple
* independent Perl interpreters to isolate environment changes from
* each other. (This is similar to how the perlhost mechanism keeps a
* separate working directory for each Perl interpreter, so that calling
* chdir() will not affect other interpreters.)
*
* (b) Only the first Perl interpreter instantiated within a process will
* "write through" environment changes to the process environment.
*
* (c) Even the primary Perl interpreter won't update the CRT copy of the
* the environment, only the Win32API copy (it calls win32_putenv()).
*
* As with CPerlHost::Getenv() and CPerlHost::Putenv() themselves, it makes
* sense to only update the process environment when inside the main
* interpreter, but we don't have access to CPerlHost's m_bTopLevel member
* from here so we'll just have to check PL_curinterp instead.
*
* Therefore, we can simply #undef getenv() and putenv() so that those names
* always refer to the CRT functions, and explicitly call win32_getenv() to
* access perl's %ENV.
*
* We also #undef malloc() and free() to be sure we are using the CRT
* functions otherwise under PERL_IMPLICIT_SYS they are redefined to calls
* into VMem::Malloc() and VMem::Free() and all allocations will be freed
* when the Perl interpreter is being destroyed so we'd end up with a pointer
* into deallocated memory in environ[] if a program embedding a Perl
* interpreter continues to operate even after the main Perl interpreter has
* been destroyed.
*
* Note that we don't free() the malloc()ed memory unless and until we call
* malloc() again ourselves because the CRT putenv() function simply puts its
* pointer argument into the environ[] arrary (it doesn't make a copy of it)
* so this memory must otherwise be leaked.
*/
#undef getenv
#undef putenv
#undef malloc
#undef free
static void
fix_win32_tzenv(void)
{
static char* oldenv = NULL;
char* newenv;
const char* perl_tz_env = win32_getenv("TZ");
const char* crt_tz_env = getenv("TZ");
if (perl_tz_env == NULL)
perl_tz_env = "";
if (crt_tz_env == NULL)
crt_tz_env = "";
if (strcmp(perl_tz_env, crt_tz_env) != 0) {
newenv = (char*)malloc((strlen(perl_tz_env) + 4) * sizeof(char));
if (newenv != NULL) {
sprintf(newenv, "TZ=%s", perl_tz_env);
putenv(newenv);
if (oldenv != NULL)
free(oldenv);
oldenv = newenv;
}
}
}
#endif
/*
* my_tzset - wrapper to tzset() with a fix to make it work (better) on Win32.
* This code is duplicated in the POSIX module, so any changes made here
* should be made there too.
*/
static void
my_tzset(pTHX)
{
#ifdef WIN32
#if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
if (PL_curinterp == aTHX)
#endif
fix_win32_tzenv();
#endif
tzset();
}
/*
* my_mini_mktime - normalise struct tm values without the localtime()
* semantics (and overhead) of mktime(). Stolen shamelessly from Perl's
* Perl_mini_mktime() in util.c - for details on the algorithm, see that
* file.
*/
static void
my_mini_mktime(struct tm *ptm)
{
int yearday;
int secs;
int month, mday, year, jday;
int odd_cent, odd_year;
year = 1900 + ptm->tm_year;
month = ptm->tm_mon;
mday = ptm->tm_mday;
/* allow given yday with no month & mday to dominate the result */
if (ptm->tm_yday >= 0 && mday <= 0 && month <= 0) {
month = 0;
mday = 0;
jday = 1 + ptm->tm_yday;
}
else {
jday = 0;
}
if (month >= 2)
month+=2;
else
month+=14, year--;
yearday = DAYS_PER_YEAR * year + year/4 - year/100 + year/400;
yearday += month*MONTH_TO_DAYS + mday + jday;
/*
* Note that we don't know when leap-seconds were or will be,
* so we have to trust the user if we get something which looks
* like a sensible leap-second. Wild values for seconds will
* be rationalised, however.
*/
if ((unsigned) ptm->tm_sec <= 60) {
secs = 0;
}
else {
secs = ptm->tm_sec;
ptm->tm_sec = 0;
}
secs += 60 * ptm->tm_min;
secs += SECS_PER_HOUR * ptm->tm_hour;
if (secs < 0) {
if (secs-(secs/SECS_PER_DAY*SECS_PER_DAY) < 0) {
/* got negative remainder, but need positive time */
/* back off an extra day to compensate */
yearday += (secs/SECS_PER_DAY)-1;
secs -= SECS_PER_DAY * (secs/SECS_PER_DAY - 1);
}
else {
yearday += (secs/SECS_PER_DAY);
secs -= SECS_PER_DAY * (secs/SECS_PER_DAY);
}
}
else if (secs >= SECS_PER_DAY) {
yearday += (secs/SECS_PER_DAY);
secs %= SECS_PER_DAY;
}
ptm->tm_hour = secs/SECS_PER_HOUR;
secs %= SECS_PER_HOUR;
ptm->tm_min = secs/60;
secs %= 60;
ptm->tm_sec += secs;
/* done with time of day effects */
/*
* The algorithm for yearday has (so far) left it high by 428.
* To avoid mistaking a legitimate Feb 29 as Mar 1, we need to
* bias it by 123 while trying to figure out what year it
* really represents. Even with this tweak, the reverse
* translation fails for years before A.D. 0001.
* It would still fail for Feb 29, but we catch that one below.
*/
jday = yearday; /* save for later fixup vis-a-vis Jan 1 */
yearday -= YEAR_ADJUST;
year = (yearday / DAYS_PER_QCENT) * 400;
yearday %= DAYS_PER_QCENT;
odd_cent = yearday / DAYS_PER_CENT;
year += odd_cent * 100;
yearday %= DAYS_PER_CENT;
year += (yearday / DAYS_PER_QYEAR) * 4;
yearday %= DAYS_PER_QYEAR;
odd_year = yearday / DAYS_PER_YEAR;
year += odd_year;
yearday %= DAYS_PER_YEAR;
if (!yearday && (odd_cent==4 || odd_year==4)) { /* catch Feb 29 */
month = 1;
yearday = 29;
}
else {
yearday += YEAR_ADJUST; /* recover March 1st crock */
month = yearday*DAYS_TO_MONTH;
yearday -= month*MONTH_TO_DAYS;
/* recover other leap-year adjustment */
if (month > 13) {
month-=14;
year++;
}
else {
month-=2;
}
}
ptm->tm_year = year - 1900;
if (yearday) {
ptm->tm_mday = yearday;
ptm->tm_mon = month;
}
else {
ptm->tm_mday = 31;
ptm->tm_mon = month - 1;
}
/* re-build yearday based on Jan 1 to get tm_yday */
year--;
yearday = year*DAYS_PER_YEAR + year/4 - year/100 + year/400;
yearday += 14*MONTH_TO_DAYS + 1;
ptm->tm_yday = jday - yearday;
/* fix tm_wday if not overridden by caller */
ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7;
}
# if defined(WIN32) || (defined(__QNX__) && defined(__WATCOMC__))
# define strncasecmp(x,y,n) strnicmp(x,y,n)
# endif
/* strptime copied from freebsd with the following copyright: */
/*
* Copyright (c) 1994 Powerdog Industries. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgement:
* This product includes software developed by Powerdog Industries.
* 4. The name of Powerdog Industries may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY POWERDOG INDUSTRIES ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE POWERDOG INDUSTRIES BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
#ifndef NOID
static char copyright[] =
"@(#) Copyright (c) 1994 Powerdog Industries. All rights reserved.";
static char sccsid[] = "@(#)strptime.c 0.1 (Powerdog) 94/03/27";
#endif /* !defined NOID */
#endif /* not lint */
#include <time.h>
#include <ctype.h>
#include <string.h>
static char * _strptime(pTHX_ const char *, const char *, struct tm *,
int *got_GMT);
#define asizeof(a) (sizeof (a) / sizeof ((a)[0]))
struct lc_time_T {
const char * mon[12];
const char * month[12];
const char * wday[7];
const char * weekday[7];
const char * X_fmt;
const char * x_fmt;
const char * c_fmt;
const char * am;
const char * pm;
const char * date_fmt;
const char * alt_month[12];
const char * Ef_fmt;
const char * EF_fmt;
};
struct lc_time_T _time_localebuf;
int _time_using_locale;
const struct lc_time_T _C_time_locale = {
{
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
}, {
"January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"
}, {
"Sun", "Mon", "Tue", "Wed",
"Thu", "Fri", "Sat"
}, {
"Sunday", "Monday", "Tuesday", "Wednesday",
"Thursday", "Friday", "Saturday"
},
/* X_fmt */
"%H:%M:%S",
/*
** x_fmt
** Since the C language standard calls for
** "date, using locale's date format," anything goes.
** Using just numbers (as here) makes Quakers happier;
** it's also compatible with SVR4.
*/
"%m/%d/%y",
/*
** c_fmt (ctime-compatible)
** Not used, just compatibility placeholder.
*/
NULL,
/* am */
"AM",
/* pm */
"PM",
/* date_fmt */
"%a %Ef %X %Z %Y",
{
"January", "February", "March", "April", "May", "June",
"July", "August", "September", "October", "November", "December"
},
/* Ef_fmt
** To determine short months / day order
*/
"%b %e",
/* EF_fmt
** To determine long months / day order
*/
"%B %e"
};
#define Locale (&_C_time_locale)
static char *
_strptime(pTHX_ const char *buf, const char *fmt, struct tm *tm, int *got_GMT)
{
char c;
const char *ptr;
int i,
len;
int Ealternative, Oalternative;
/* There seems to be a slightly improved version at
* http://www.opensource.apple.com/source/Libc/Libc-583/stdtime/strptime-fbsd.c
* which we may end up borrowing more from
*/
ptr = fmt;
while (*ptr != 0) {
if (*buf == 0)
break;
c = *ptr++;
if (c != '%') {
if (isspace((unsigned char)c))
while (*buf != 0 && isspace((unsigned char)*buf))
buf++;
else if (c != *buf++)
return 0;
continue;
}
Ealternative = 0;
Oalternative = 0;
label:
c = *ptr++;
switch (c) {
case 0:
case '%':
if (*buf++ != '%')
return 0;
break;
case '+':
buf = _strptime(aTHX_ buf, Locale->date_fmt, tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'C':
if (!isdigit((unsigned char)*buf))
return 0;
/* XXX This will break for 3-digit centuries. */
len = 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (i < 19)
return 0;
tm->tm_year = i * 100 - 1900;
break;
case 'c':
/* NOTE: c_fmt is intentionally ignored */
buf = _strptime(aTHX_ buf, "%a %Ef %T %Y", tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'D':
buf = _strptime(aTHX_ buf, "%m/%d/%y", tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'E':
if (Ealternative || Oalternative)
break;
Ealternative++;
goto label;
case 'O':
if (Ealternative || Oalternative)
break;
Oalternative++;
goto label;
case 'F':
case 'f':
if (!Ealternative)
break;
buf = _strptime(aTHX_ buf, (c == 'f') ? Locale->Ef_fmt : Locale->EF_fmt, tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'R':
buf = _strptime(aTHX_ buf, "%H:%M", tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'r':
buf = _strptime(aTHX_ buf, "%I:%M:%S %p", tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'n': /* whitespace */
case 't':
if (!isspace((unsigned char)*buf))
return 0;
while (isspace((unsigned char)*buf))
buf++;
break;
case 'T':
buf = _strptime(aTHX_ buf, "%H:%M:%S", tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'X':
buf = _strptime(aTHX_ buf, Locale->X_fmt, tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'x':
buf = _strptime(aTHX_ buf, Locale->x_fmt, tm, got_GMT);
if (buf == 0)
return 0;
break;
case 'j':
if (!isdigit((unsigned char)*buf))
return 0;
len = 3;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (i < 1 || i > 366)
return 0;
tm->tm_yday = i - 1;
break;
case 'M':
case 'S':
if (*buf == 0 || isspace((unsigned char)*buf))
break;
if (!isdigit((unsigned char)*buf))
return 0;
len = 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (c == 'M') {
if (i > 59)
return 0;
tm->tm_min = i;
} else {
if (i > 60)
return 0;
tm->tm_sec = i;
}
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 'H':
case 'I':
case 'k':
case 'l':
/*
* Of these, %l is the only specifier explicitly
* documented as not being zero-padded. However,
* there is no harm in allowing zero-padding.
*
* XXX The %l specifier may gobble one too many
* digits if used incorrectly.
*/
if (!isdigit((unsigned char)*buf))
return 0;
len = 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (c == 'H' || c == 'k') {
if (i > 23)
return 0;
} else if (i > 12)
return 0;
tm->tm_hour = i;
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 'p':
/*
* XXX This is bogus if parsed before hour-related
* specifiers.
*/
len = strlen(Locale->am);
if (strncasecmp(buf, Locale->am, len) == 0) {
if (tm->tm_hour > 12)
return 0;
if (tm->tm_hour == 12)
tm->tm_hour = 0;
buf += len;
break;
}
len = strlen(Locale->pm);
if (strncasecmp(buf, Locale->pm, len) == 0) {
if (tm->tm_hour > 12)
return 0;
if (tm->tm_hour != 12)
tm->tm_hour += 12;
buf += len;
break;
}
return 0;
case 'A':
case 'a':
for (i = 0; i < asizeof(Locale->weekday); i++) {
if (c == 'A') {
len = strlen(Locale->weekday[i]);
if (strncasecmp(buf,
Locale->weekday[i],
len) == 0)
break;
} else {
len = strlen(Locale->wday[i]);
if (strncasecmp(buf,
Locale->wday[i],
len) == 0)
break;
}
}
if (i == asizeof(Locale->weekday))
return 0;
tm->tm_wday = i;
buf += len;
break;
case 'U':
case 'W':
/*
* XXX This is bogus, as we can not assume any valid
* information present in the tm structure at this
* point to calculate a real value, so just check the
* range for now.
*/
if (!isdigit((unsigned char)*buf))
return 0;
len = 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (i > 53)
return 0;
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 'w':
if (!isdigit((unsigned char)*buf))
return 0;
i = *buf - '0';
if (i > 6)
return 0;
tm->tm_wday = i;
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 'd':
case 'e':
/*
* The %e specifier is explicitly documented as not
* being zero-padded but there is no harm in allowing
* such padding.
*
* XXX The %e specifier may gobble one too many
* digits if used incorrectly.
*/
if (!isdigit((unsigned char)*buf))
return 0;
len = 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (i > 31)
return 0;
tm->tm_mday = i;
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 'B':
case 'b':
case 'h':
for (i = 0; i < asizeof(Locale->month); i++) {
if (Oalternative) {
if (c == 'B') {
len = strlen(Locale->alt_month[i]);
if (strncasecmp(buf,
Locale->alt_month[i],
len) == 0)
break;
}
} else {
if (c == 'B') {
len = strlen(Locale->month[i]);
if (strncasecmp(buf,
Locale->month[i],
len) == 0)
break;
} else {
len = strlen(Locale->mon[i]);
if (strncasecmp(buf,
Locale->mon[i],
len) == 0)
break;
}
}
}
if (i == asizeof(Locale->month))
return 0;
tm->tm_mon = i;
buf += len;
break;
case 'm':
if (!isdigit((unsigned char)*buf))
return 0;
len = 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (i < 1 || i > 12)
return 0;
tm->tm_mon = i - 1;
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 's':
{
char *cp;
int sverrno;
long n;
time_t t;
struct tm mytm;
sverrno = errno;
errno = 0;
n = strtol(buf, &cp, 10);
if (errno == ERANGE || (long)(t = n) != n) {
errno = sverrno;
return 0;
}
errno = sverrno;
buf = cp;
memset(&mytm, 0, sizeof(mytm));
my_init_tm(&mytm); /* XXX workaround - see my_init_tm() above */
mytm = *gmtime(&t);
tm->tm_sec = mytm.tm_sec;
tm->tm_min = mytm.tm_min;
tm->tm_hour = mytm.tm_hour;
tm->tm_mday = mytm.tm_mday;
tm->tm_mon = mytm.tm_mon;
tm->tm_year = mytm.tm_year;
tm->tm_wday = mytm.tm_wday;
tm->tm_yday = mytm.tm_yday;
tm->tm_isdst = mytm.tm_isdst;
}
break;
case 'Y':
case 'y':
if (*buf == 0 || isspace((unsigned char)*buf))
break;
if (!isdigit((unsigned char)*buf))
return 0;
len = (c == 'Y') ? 4 : 2;
for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) {
i *= 10;
i += *buf - '0';
len--;
}
if (c == 'Y')
i -= 1900;
if (c == 'y' && i < 69)
i += 100;
if (i < 0)
return 0;
tm->tm_year = i;
if (*buf != 0 && isspace((unsigned char)*buf))
while (*ptr != 0 && !isspace((unsigned char)*ptr))
ptr++;
break;
case 'Z':
{
const char *cp;
char *zonestr;
for (cp = buf; *cp && isupper((unsigned char)*cp); ++cp)
{/*empty*/}
if (cp - buf) {
zonestr = (char *)malloc(cp - buf + 1);
if (!zonestr) {
errno = ENOMEM;
return 0;
}
strncpy(zonestr, buf, cp - buf);
zonestr[cp - buf] = '\0';
my_tzset(aTHX);
if (0 == strcmp(zonestr, "GMT")) {
*got_GMT = 1;
}
free(zonestr);
if (!*got_GMT) return 0;
buf += cp - buf;
}
}
break;
case 'z':
{
int sign = 1;
if (*buf != '+') {
if (*buf == '-')
sign = -1;
else
return 0;
}
buf++;
i = 0;
for (len = 4; len > 0; len--) {
if (isdigit((int)*buf)) {
i *= 10;
i += *buf - '0';
buf++;
} else
return 0;
}
tm->tm_hour -= sign * (i / 100);
tm->tm_min -= sign * (i % 100);
*got_GMT = 1;
}
break;
}
}
return (char *)buf;
}
char *
our_strptime(pTHX_ const char *buf, const char *fmt, struct tm *tm)
{
char *ret;
int got_GMT = 0;
return _strptime(aTHX_ buf, fmt, tm, &got_GMT);
}
MODULE = Time::Piece PACKAGE = Time::Piece
PROTOTYPES: ENABLE
void
_strftime(fmt, sec, min, hour, mday, mon, year, wday = -1, yday = -1, isdst = -1)
char * fmt
int sec
int min
int hour
int mday
int mon
int year
int wday
int yday
int isdst
CODE:
{
char tmpbuf[128];
struct tm mytm;
int len;
memset(&mytm, 0, sizeof(mytm));
my_init_tm(&mytm); /* XXX workaround - see my_init_tm() above */
mytm.tm_sec = sec;
mytm.tm_min = min;
mytm.tm_hour = hour;
mytm.tm_mday = mday;
mytm.tm_mon = mon;
mytm.tm_year = year;
mytm.tm_wday = wday;
mytm.tm_yday = yday;
mytm.tm_isdst = isdst;
my_mini_mktime(&mytm);
len = strftime(tmpbuf, sizeof tmpbuf, fmt, &mytm);
/*
** The following is needed to handle to the situation where
** tmpbuf overflows. Basically we want to allocate a buffer
** and try repeatedly. The reason why it is so complicated
** is that getting a return value of 0 from strftime can indicate
** one of the following:
** 1. buffer overflowed,
** 2. illegal conversion specifier, or
** 3. the format string specifies nothing to be returned(not
** an error). This could be because format is an empty string
** or it specifies %p that yields an empty string in some locale.
** If there is a better way to make it portable, go ahead by
** all means.
*/
if ((len > 0 && len < sizeof(tmpbuf)) || (len == 0 && *fmt == '\0'))
ST(0) = sv_2mortal(newSVpv(tmpbuf, len));
else {
/* Possibly buf overflowed - try again with a bigger buf */
int fmtlen = strlen(fmt);
int bufsize = fmtlen + sizeof(tmpbuf);
char* buf;
int buflen;
New(0, buf, bufsize, char);
while (buf) {
buflen = strftime(buf, bufsize, fmt, &mytm);
if (buflen > 0 && buflen < bufsize)
break;
/* heuristic to prevent out-of-memory errors */
if (bufsize > 100*fmtlen) {
Safefree(buf);
buf = NULL;
break;
}
bufsize *= 2;
Renew(buf, bufsize, char);
}
if (buf) {
ST(0) = sv_2mortal(newSVpv(buf, buflen));
Safefree(buf);
}
else
ST(0) = sv_2mortal(newSVpv(tmpbuf, len));
}
}
void
_tzset()
PPCODE:
my_tzset(aTHX);
void
_strptime ( string, format )
char * string
char * format
PREINIT:
struct tm mytm;
time_t t;
char * remainder;
PPCODE:
t = 0;
mytm = *gmtime(&t);
remainder = (char *)our_strptime(aTHX_ string, format, &mytm);
if (remainder == NULL) {
croak("Error parsing time");
}
if (*remainder != '\0') {
warn("garbage at end of string in strptime: %s", remainder);
}
my_mini_mktime(&mytm);
/* warn("tm: %d-%d-%d %d:%d:%d\n", mytm.tm_year, mytm.tm_mon, mytm.tm_mday, mytm.tm_hour, mytm.tm_min, mytm.tm_sec); */
EXTEND(SP, 11);
PUSHs(sv_2mortal(newSViv(mytm.tm_sec)));
PUSHs(sv_2mortal(newSViv(mytm.tm_min)));
PUSHs(sv_2mortal(newSViv(mytm.tm_hour)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mon)));
PUSHs(sv_2mortal(newSViv(mytm.tm_year)));
PUSHs(sv_2mortal(newSViv(mytm.tm_wday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_yday)));
/* isdst */
PUSHs(sv_2mortal(newSViv(0)));
/* epoch */
PUSHs(sv_2mortal(newSViv(0)));
/* islocal */
PUSHs(sv_2mortal(newSViv(0)));
void
_mini_mktime(int sec, int min, int hour, int mday, int mon, int year)
PREINIT:
struct tm mytm;
time_t t;
PPCODE:
t = 0;
mytm = *gmtime(&t);
mytm.tm_sec = sec;
mytm.tm_min = min;
mytm.tm_hour = hour;
mytm.tm_mday = mday;
mytm.tm_mon = mon;
mytm.tm_year = year;
my_mini_mktime(&mytm);
EXTEND(SP, 11);
PUSHs(sv_2mortal(newSViv(mytm.tm_sec)));
PUSHs(sv_2mortal(newSViv(mytm.tm_min)));
PUSHs(sv_2mortal(newSViv(mytm.tm_hour)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mon)));
PUSHs(sv_2mortal(newSViv(mytm.tm_year)));
PUSHs(sv_2mortal(newSViv(mytm.tm_wday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_yday)));
/* isdst */
PUSHs(sv_2mortal(newSViv(0)));
/* epoch */
PUSHs(sv_2mortal(newSViv(0)));
/* islocal */
PUSHs(sv_2mortal(newSViv(0)));
void
_crt_localtime(time_t sec)
PREINIT:
struct tm mytm;
PPCODE:
mytm = *localtime(&sec);
/* Need to get: $s,$n,$h,$d,$m,$y */
EXTEND(SP, 9);
PUSHs(sv_2mortal(newSViv(mytm.tm_sec)));
PUSHs(sv_2mortal(newSViv(mytm.tm_min)));
PUSHs(sv_2mortal(newSViv(mytm.tm_hour)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mon)));
PUSHs(sv_2mortal(newSViv(mytm.tm_year)));
PUSHs(sv_2mortal(newSViv(mytm.tm_year)));
PUSHs(sv_2mortal(newSViv(mytm.tm_wday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_yday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_isdst)));
void
_crt_gmtime(time_t sec)
PREINIT:
struct tm mytm;
PPCODE:
mytm = *gmtime(&sec);
/* Need to get: $s,$n,$h,$d,$m,$y */
EXTEND(SP, 9);
PUSHs(sv_2mortal(newSViv(mytm.tm_sec)));
PUSHs(sv_2mortal(newSViv(mytm.tm_min)));
PUSHs(sv_2mortal(newSViv(mytm.tm_hour)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_mon)));
PUSHs(sv_2mortal(newSViv(mytm.tm_year)));
PUSHs(sv_2mortal(newSViv(mytm.tm_wday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_yday)));
PUSHs(sv_2mortal(newSViv(mytm.tm_isdst)));