diff options
Diffstat (limited to 'time/strftime.c')
| -rw-r--r-- | time/strftime.c | 54 |
1 files changed, 44 insertions, 10 deletions
diff --git a/time/strftime.c b/time/strftime.c index 092739d165..ddea0240f6 100644 --- a/time/strftime.c +++ b/time/strftime.c @@ -27,6 +27,8 @@ # define HAVE_STRUCT_ERA_ENTRY 1 # define HAVE_TM_GMTOFF 1 # define HAVE_TM_ZONE 1 +# define HAVE_TZNAME 1 +# define HAVE_TZSET 1 # define MULTIBYTE_IS_FORMAT_SAFE 1 # define STDC_HEADERS 1 # include <ansidecl.h> @@ -79,7 +81,7 @@ extern char *tzname[]; # include <stdlib.h> # include <string.h> #else -# define memcpy(d, s, n) bcopy (s, d, n) +# define memcpy(d, s, n) bcopy ((s), (d), (n)) #endif #ifndef __P @@ -125,6 +127,7 @@ extern char *tzname[]; #ifdef _LIBC # define gmtime_r __gmtime_r # define localtime_r __localtime_r +extern int __tz_compute __P ((time_t timer, const struct tm *tm)); #else # if ! HAVE_LOCALTIME_R # if ! HAVE_TM_GMTOFF @@ -162,7 +165,28 @@ localtime_r (t, tp) #endif /* ! defined (_LIBC) */ +#if !defined (memset) && !defined (HAVE_MEMSET) && !defined (_LIBC) +/* Some systems lack the `memset' function and we don't want to + introduce additional dependencies. */ static const char spaces[16] = " "; + +# define memset_space(P, Len) \ + do { \ + int _len = (Len); \ + \ + do \ + { \ + int _this = _len > 16 ? 16 : _len; \ + memcpy ((P), spaces, _this); \ + (P) += _this; \ + _len -= _this; \ + } \ + while (_len > 0); \ + } while (0) +#else +# define memset_space(P, Len) memset ((P), ' ', (Len)) +#endif + #define add(n, f) \ do \ { \ @@ -174,13 +198,8 @@ static const char spaces[16] = " "; else \ if (p) \ { \ - while (_delta > 0) \ - { \ - int _this = _delta > 16 ? 16 : _delta; \ - memcpy (p, spaces, _this); \ - p += _this; \ - _delta -= _this; \ - } \ + if (_delta > 0) \ + memset_space (p, _delta); \ f; \ p += _n; \ } \ @@ -325,11 +344,26 @@ strftime (s, maxsize, format, tp) char *p = s; const char *f; - zone = 0; -#if HAVE_TM_ZONE + zone = NULL; +#if !defined _LIBC && HAVE_TM_ZONE + /* XXX We have some problems here. First, the string pointed to by + tm_zone is dynamically allocated while loading the zone data. But + when another zone is loaded since the information in TP were + computed this would be a stale pointer. + The second problem is the POSIX test suite which assumes setting + the environment variable TZ to a new value before calling strftime() + will influence the result (the %Z format) even if the information in + TP is computed with a totally different time zone. --drepper@gnu */ zone = (const char *) tp->tm_zone; #endif #if HAVE_TZNAME + /* POSIX.1 8.1.1 requires that whenever strftime() is called, the + time zone names contained in the external variable `tzname' shall + be set as if the tzset() function had been called. */ +# if HAVE_TZSET + tzset (); +# endif + if (!(zone && *zone) && tp->tm_isdst >= 0) zone = tzname[tp->tm_isdst]; #endif |