diff options
Diffstat (limited to 'contrib/perl5/ext/POSIX/POSIX.xs')
| -rw-r--r-- | contrib/perl5/ext/POSIX/POSIX.xs | 313 |
1 files changed, 268 insertions, 45 deletions
diff --git a/contrib/perl5/ext/POSIX/POSIX.xs b/contrib/perl5/ext/POSIX/POSIX.xs index 15e026e..3a523d1 100644 --- a/contrib/perl5/ext/POSIX/POSIX.xs +++ b/contrib/perl5/ext/POSIX/POSIX.xs @@ -1,11 +1,14 @@ #ifdef WIN32 #define _POSIX_ #endif + +#define PERL_NO_GET_CONTEXT + #include "EXTERN.h" #define PERLIO_NOT_STDIO 1 #include "perl.h" #include "XSUB.h" -#ifdef PERL_OBJECT /* XXX _very_ temporary hacks */ +#if defined(PERL_OBJECT) || defined(PERL_CAPI) || defined(PERL_IMPLICIT_SYS) # undef signal # undef open # undef setmode @@ -78,6 +81,7 @@ /* The non-POSIX CRTL times() has void return type, so we just get the current time directly */ clock_t vms_times(struct tms *PL_bufptr) { + dTHX; clock_t retval; /* Get wall time and convert to 10 ms intervals to * produce the return value that the POSIX standard expects */ @@ -102,6 +106,9 @@ } # define times(t) vms_times(t) #else +#if defined (__CYGWIN__) +# define tzname _tzname +#endif #if defined (WIN32) # undef mkfifo # define mkfifo(a,b) not_here("mkfifo") @@ -135,8 +142,12 @@ #else # ifndef HAS_MKFIFO -# ifndef mkfifo -# define mkfifo(path, mode) (mknod((path), (mode) | S_IFIFO, 0)) +# ifdef OS2 +# define mkfifo(a,b) not_here("mkfifo") +# else /* !( defined OS2 ) */ +# ifndef mkfifo +# define mkfifo(path, mode) (mknod((path), (mode) | S_IFIFO, 0)) +# endif # endif # endif /* !HAS_MKFIFO */ @@ -177,10 +188,10 @@ typedef struct termios* POSIX__Termios; #endif /* Possibly needed prototypes */ -char *cuserid _((char *)); -double strtod _((const char *, char **)); -long strtol _((const char *, char **, int)); -unsigned long strtoul _((const char *, char **, int)); +char *cuserid (char *); +double strtod (const char *, char **); +long strtol (const char *, char **, int); +unsigned long strtoul (const char *, char **, int); #ifndef HAS_CUSERID #define cuserid(a) (char *) not_here("cuserid") @@ -278,7 +289,7 @@ unsigned long strtoul _((const char *, char **, int)); #endif #ifdef HAS_TZNAME -# ifndef WIN32 +# if !defined(WIN32) && !defined(__CYGWIN__) extern char *tzname[]; # endif #else @@ -303,14 +314,13 @@ char *tzname[] = { "" , "" }; */ #ifdef HAS_GNULIBC # ifndef STRUCT_TM_HASZONE -# define STRUCT_TM_HAS_ZONE +# define STRUCT_TM_HASZONE # endif #endif #ifdef STRUCT_TM_HASZONE static void -init_tm(ptm) /* see mktime, strftime and asctime */ - struct tm *ptm; +init_tm(struct tm *ptm) /* see mktime, strftime and asctime */ { Time_t now; (void)time(&now); @@ -321,6 +331,202 @@ init_tm(ptm) /* see mktime, strftime and asctime */ # define init_tm(ptm) #endif +/* + * mini_mktime - normalise struct tm values without the localtime() + * semantics (and overhead) of mktime(). + */ +static void +mini_mktime(struct tm *ptm) +{ + int yearday; + int secs; + int month, mday, year, jday; + int odd_cent, odd_year; + +#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 */ + +/* + * Year/day algorithm notes: + * + * With a suitable offset for numeric value of the month, one can find + * an offset into the year by considering months to have 30.6 (153/5) days, + * using integer arithmetic (i.e., with truncation). To avoid too much + * messing about with leap days, we consider January and February to be + * the 13th and 14th month of the previous year. After that transformation, + * we need the month index we use to be high by 1 from 'normal human' usage, + * so the month index values we use run from 4 through 15. + * + * Given that, and the rules for the Gregorian calendar (leap years are those + * divisible by 4 unless also divisible by 100, when they must be divisible + * by 400 instead), we can simply calculate the number of days since some + * arbitrary 'beginning of time' by futzing with the (adjusted) year number, + * the days we derive from our month index, and adding in the day of the + * month. The value used here is not adjusted for the actual origin which + * it normally would use (1 January A.D. 1), since we're not exposing it. + * We're only building the value so we can turn around and get the + * normalised values for the year, month, day-of-month, and day-of-year. + * + * For going backward, we need to bias the value we're using so that we find + * the right year value. (Basically, we don't want the contribution of + * March 1st to the number to apply while deriving the year). Having done + * that, we 'count up' the contribution to the year number by accounting for + * full quadracenturies (400-year periods) with their extra leap days, plus + * the contribution from full centuries (to avoid counting in the lost leap + * days), plus the contribution from full quad-years (to count in the normal + * leap days), plus the leftover contribution from any non-leap years. + * At this point, if we were working with an actual leap day, we'll have 0 + * days left over. This is also true for March 1st, however. So, we have + * to special-case that result, and (earlier) keep track of the 'odd' + * century and year contributions. If we got 4 extra centuries in a qcent, + * or 4 extra years in a qyear, then it's a leap day and we call it 29 Feb. + * Otherwise, we add back in the earlier bias we removed (the 123 from + * figuring in March 1st), find the month index (integer division by 30.6), + * and the remainder is the day-of-month. We then have to convert back to + * 'real' months (including fixing January and February from being 14/15 in + * the previous year to being in the proper year). After that, to get + * tm_yday, we work with the normalised year and get a new yearday value for + * January 1st, which we subtract from the yearday value we had earlier, + * representing the date we've re-built. This is done from January 1 + * because tm_yday is 0-origin. + * + * Since POSIX time routines are only guaranteed to work for times since the + * UNIX epoch (00:00:00 1 Jan 1970 UTC), the fact that this algorithm + * applies Gregorian calendar rules even to dates before the 16th century + * doesn't bother me. Besides, you'd need cultural context for a given + * date to know whether it was Julian or Gregorian calendar, and that's + * outside the scope for this routine. Since we convert back based on the + * same rules we used to build the yearday, you'll only get strange results + * for input which needed normalising, or for the 'odd' century years which + * were leap years in the Julian calander but not in the Gregorian one. + * I can live with that. + * + * This algorithm also fails to handle years before A.D. 1 gracefully, but + * that's still outside the scope for POSIX time manipulation, so I don't + * care. + */ + + 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 */ + if ((unsigned)ptm->tm_wday > 6) + ptm->tm_wday = (jday + WEEKDAY_BIAS) % 7; +} #ifdef HAS_LONG_DOUBLE # if LONG_DOUBLESIZE > DOUBLESIZE @@ -348,7 +554,7 @@ not_here(char *s) } static -#ifdef HAS_LONG_DOUBLE +#if defined(HAS_LONG_DOUBLE) && (LONG_DOUBLESIZE > DOUBLESIZE) long double #else double @@ -1519,9 +1725,10 @@ constant(char *name, int arg) #else goto not_there; #endif - if (strEQ(name, "L_tmpname")) -#ifdef L_tmpname - return L_tmpname; + /* L_tmpnam[e] was a typo--retained for compatibility */ + if (strEQ(name, "L_tmpname") || strEQ(name, "L_tmpnam")) +#ifdef L_tmpnam + return L_tmpnam; #else goto not_there; #endif @@ -3045,7 +3252,7 @@ setlocale(category, locale = 0) else #endif newctype = RETVAL; - perl_new_ctype(newctype); + new_ctype(newctype); } #endif /* USE_LOCALE_CTYPE */ #ifdef USE_LOCALE_COLLATE @@ -3062,7 +3269,7 @@ setlocale(category, locale = 0) else #endif newcoll = RETVAL; - perl_new_collate(newcoll); + new_collate(newcoll); } #endif /* USE_LOCALE_COLLATE */ #ifdef USE_LOCALE_NUMERIC @@ -3079,7 +3286,7 @@ setlocale(category, locale = 0) else #endif newnum = RETVAL; - perl_new_numeric(newnum); + new_numeric(newnum); } #endif /* USE_LOCALE_NUMERIC */ } @@ -3167,17 +3374,15 @@ sigaction(sig, action, oldaction = 0) # This code is really grody because we're trying to make the signal # interface look beautiful, which is hard. - if (!PL_siggv) - gv_fetchpv("SIG", TRUE, SVt_PVHV); - { + GV *siggv = gv_fetchpv("SIG", TRUE, SVt_PVHV); struct sigaction act; struct sigaction oact; POSIX__SigSet sigset; SV** svp; - SV** sigsvp = hv_fetch(GvHVn(PL_siggv), - sig_name[sig], - strlen(sig_name[sig]), + SV** sigsvp = hv_fetch(GvHVn(siggv), + PL_sig_name[sig], + strlen(PL_sig_name[sig]), TRUE); STRLEN n_a; @@ -3196,7 +3401,7 @@ sigaction(sig, action, oldaction = 0) croak("Can't supply an action without a HANDLER"); sv_setpv(*sigsvp, SvPV(*svp, n_a)); mg_set(*sigsvp); /* handles DEFAULT and IGNORE */ - act.sa_handler = sighandler; + act.sa_handler = PL_sighandlerp; /* Set up any desired mask. */ svp = hv_fetch(action, "MASK", 4, FALSE); @@ -3262,7 +3467,7 @@ INIT: } else if (sv_derived_from(ST(2), "POSIX::SigSet")) { IV tmp = SvIV((SV*)SvRV(ST(2))); - oldsigset = (POSIX__SigSet) tmp; + oldsigset = INT2PTR(POSIX__SigSet,tmp); } else { New(0, oldsigset, 1, sigset_t); @@ -3367,9 +3572,18 @@ write(fd, buffer, nbytes) char * buffer size_t nbytes -char * -tmpnam(s = 0) - char * s = 0; +SV * +tmpnam() + PREINIT: + STRLEN i; + int len; + CODE: + RETVAL = newSVpvn("", 0); + SvGROW(RETVAL, L_tmpnam); + len = strlen(tmpnam(SvPV(RETVAL, i))); + SvCUR_set(RETVAL, len); + OUTPUT: + RETVAL void abort() @@ -3434,10 +3648,12 @@ strtol(str, base = 0) char *unparsed; PPCODE: num = strtol(str, &unparsed, base); - if (num >= IV_MIN && num <= IV_MAX) - PUSHs(sv_2mortal(newSViv((IV)num))); - else +#if IVSIZE <= LONGSIZE + if (num < IV_MIN || num > IV_MAX) PUSHs(sv_2mortal(newSVnv((double)num))); + else +#endif + PUSHs(sv_2mortal(newSViv((IV)num))); if (GIMME == G_ARRAY) { EXTEND(SP, 1); if (unparsed) @@ -3629,7 +3845,7 @@ strftime(fmt, sec, min, hour, mday, mon, year, wday = -1, yday = -1, isdst = -1) mytm.tm_wday = wday; mytm.tm_yday = yday; mytm.tm_isdst = isdst; - (void) mktime(&mytm); + mini_mktime(&mytm); len = strftime(tmpbuf, sizeof tmpbuf, fmt, &mytm); /* ** The following is needed to handle to the situation where @@ -3645,28 +3861,35 @@ strftime(fmt, sec, min, hour, mday, mon, year, wday = -1, yday = -1, isdst = -1) ** If there is a better way to make it portable, go ahead by ** all means. */ - if ( ( len > 0 && len < sizeof(tmpbuf) ) - || ( len == 0 && strlen(fmt) == 0 ) ) { + if ((len > 0 && len < sizeof(tmpbuf)) || (len == 0 && *fmt == '\0')) ST(0) = sv_2mortal(newSVpv(tmpbuf, len)); - } else { + else { /* Possibly buf overflowed - try again with a bigger buf */ - int bufsize = strlen(fmt) + sizeof(tmpbuf); + int fmtlen = strlen(fmt); + int bufsize = fmtlen + sizeof(tmpbuf); char* buf; int buflen; New(0, buf, bufsize, char); - while( buf ) { + while (buf) { buflen = strftime(buf, bufsize, fmt, &mytm); - if ( buflen > 0 && buflen < bufsize ) break; + 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)); + if (buf) { + ST(0) = sv_2mortal(newSVpvn(buf, buflen)); Safefree(buf); - } else { - ST(0) = sv_2mortal(newSVpv(tmpbuf, len)); } + else + ST(0) = sv_2mortal(newSVpvn(tmpbuf, len)); } } @@ -3677,8 +3900,8 @@ void tzname() PPCODE: EXTEND(SP,2); - PUSHs(sv_2mortal(newSVpv(tzname[0],strlen(tzname[0])))); - PUSHs(sv_2mortal(newSVpv(tzname[1],strlen(tzname[1])))); + PUSHs(sv_2mortal(newSVpvn(tzname[0],strlen(tzname[0])))); + PUSHs(sv_2mortal(newSVpvn(tzname[1],strlen(tzname[1])))); SysRet access(filename, mode) |
