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-rw-r--r--time/strftime.c204
1 files changed, 142 insertions, 62 deletions
diff --git a/time/strftime.c b/time/strftime.c
index c47fc07548..40a7a747cf 100644
--- a/time/strftime.c
+++ b/time/strftime.c
@@ -21,22 +21,57 @@ License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
-#include <ansidecl.h>
-#include "../locale/localeinfo.h"
-#include <ctype.h>
-#include <limits.h>
-#include <stddef.h>
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef _LIBC
+# define HAVE_LIMITS_H 1
+# define HAVE_MBLEN 1
+# define HAVE_TM_ZONE 1
+# define STDC_HEADERS 1
+# include <ansidecl.h>
+# include "../locale/localeinfo.h"
+#endif
+
#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#include <sys/types.h> /* Some systems define `time_t' here. */
#include <time.h>
-#ifndef HAVE_GNU_LD
-#define __tzname tzname
-#define __daylight daylight
-#define __timezone timezone
+#if HAVE_MBLEN
+# include <ctype.h>
+#endif
+
+#if HAVE_LIMITS_H
+# include <limits.h>
#endif
+#if STDC_HEADERS
+# include <stddef.h>
+# include <stdlib.h>
+# include <string.h>
+#else
+# define memcpy(d, s, n) bcopy (s, d, n)
+#endif
+
+#ifndef __P
+#if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
+#define __P(args) args
+#else
+#define __P(args) ()
+#endif /* GCC. */
+#endif /* Not __P. */
+
+#ifndef PTR
+#ifdef __STDC__
+#define PTR void *
+#else
+#define PTR char *
+#endif
+#endif
+
+static unsigned int week __P((const struct tm *const, int));
+
#define add(n, f) \
do \
@@ -45,14 +80,19 @@ Cambridge, MA 02139, USA. */
if (i >= maxsize) \
return 0; \
else \
- if (p != NULL) \
+ if (p) \
{ \
f; \
p += (n); \
} \
} while (0)
#define cpy(n, s) add((n), memcpy((PTR) p, (PTR) (s), (n)))
+
+#ifdef _LIBC
#define fmt(n, args) add((n), if (sprintf args != (n)) return 0)
+#else
+#define fmt(n, args) add((n), sprintf args; if (strlen (p) != (n)) return 0)
+#endif
/* Return the week in the year specified by TP,
with weeks starting on STARTING_DAY. */
@@ -60,8 +100,9 @@ Cambridge, MA 02139, USA. */
inline
#endif
static unsigned int
-DEFUN(week, (tp, starting_day),
- CONST struct tm *CONST tp AND int starting_day)
+week (tp, starting_day)
+ const struct tm *const tp;
+ int starting_day;
{
int wday, dl;
@@ -78,6 +119,18 @@ DEFUN(week, (tp, starting_day),
return dl <= 0 ? 0 : ((dl / 7) + ((dl % 7) == 0 ? 0 : 1));
}
+#ifndef _NL_CURRENT
+static char const weekday_name[][10] =
+ {
+ "Sunday", "Monday", "Tuesday", "Wednesday",
+ "Thursday", "Friday", "Saturday"
+ };
+static char const month_name[][10] =
+ {
+ "January", "February", "March", "April", "May", "June",
+ "July", "August", "September", "October", "November", "December"
+ };
+#endif
/* Write information from TP into S according to the format
string FORMAT, writing no more that MAXSIZE characters
@@ -86,40 +139,55 @@ DEFUN(week, (tp, starting_day),
anywhere, so to determine how many characters would be
written, use NULL for S and (size_t) UINT_MAX for MAXSIZE. */
size_t
-DEFUN(strftime, (s, maxsize, format, tp),
- char *s AND size_t maxsize AND
- CONST char *format AND register CONST struct tm *tp)
+strftime (s, maxsize, format, tp)
+ char *s;
+ size_t maxsize;
+ const char *format;
+ register const struct tm *tp;
{
- CONST char *CONST a_wkday = _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday);
- CONST char *CONST f_wkday = _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday);
- CONST char *CONST a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon);
- CONST char *CONST f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon);
+ int hour12 = tp->tm_hour;
+#ifdef _NL_CURRENT
+ const char *const a_wkday = _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday);
+ const char *const f_wkday = _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday);
+ const char *const a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon);
+ const char *const f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon);
+ const char *const ampm = _NL_CURRENT (LC_TIME,
+ hour12 > 12 ? PM_STR : AM_STR);
size_t aw_len = strlen(a_wkday);
size_t am_len = strlen(a_month);
+ size_t ap_len = strlen (ampm);
+#else
+ const char *const f_wkday = weekday_name[tp->tm_wday];
+ const char *const f_month = month_name[tp->tm_mon];
+ const char *const a_wkday = f_wkday;
+ const char *const a_month = f_month;
+ const char *const ampm = "AMPM" + 2 * (hour12 > 12);
+ size_t aw_len = 3;
+ size_t am_len = 3;
+ size_t ap_len = 2;
+#endif
size_t wkday_len = strlen(f_wkday);
size_t month_len = strlen(f_month);
- int hour12 = tp->tm_hour;
- CONST char *CONST ampm = _NL_CURRENT (LC_TIME,
- hour12 > 12 ? PM_STR : AM_STR);
- size_t ap_len = strlen (ampm);
- CONST unsigned int y_week0 = week (tp, 0);
- CONST unsigned int y_week1 = week (tp, 1);
- CONST char *zone;
+ const unsigned int y_week0 = week (tp, 0);
+ const unsigned int y_week1 = week (tp, 1);
+ const char *zone;
size_t zonelen;
register size_t i = 0;
register char *p = s;
- register CONST char *f;
+ register const char *f;
- if (tp->tm_isdst < 0)
- {
- zone = "";
- zonelen = 0;
- }
- else
- {
- zone = __tzname[tp->tm_isdst];
- zonelen = strlen(zone);
- }
+ zone = 0;
+#if HAVE_TM_ZONE
+ zone = (const char *) tp->tm_zone;
+#endif
+#if HAVE_TZNAME
+ if (!(zone && *zone) && tp->tm_isdst >= 0)
+ zone = tzname[tp->tm_isdst];
+#endif
+ if (!(zone && *zone))
+ zone = "???";
+
+ zonelen = strlen (zone);
if (hour12 > 12)
hour12 -= 12;
@@ -128,8 +196,9 @@ DEFUN(strftime, (s, maxsize, format, tp),
for (f = format; *f != '\0'; ++f)
{
- CONST char *subfmt;
+ const char *subfmt;
+#if HAVE_MBLEN
if (!isascii(*f))
{
/* Non-ASCII, may be a multibyte. */
@@ -140,6 +209,7 @@ DEFUN(strftime, (s, maxsize, format, tp),
continue;
}
}
+#endif
if (*f != '%')
{
@@ -173,24 +243,36 @@ DEFUN(strftime, (s, maxsize, format, tp),
break;
case 'c':
+#ifdef _NL_CURRENT
subfmt = _NL_CURRENT (LC_TIME, D_T_FMT);
+#else
+ subfmt = "%a %b %d %H:%M:%S %Z %Y";
+#endif
subformat:
{
size_t len = strftime (p, maxsize - i, subfmt, tp);
+ if (len == 0 && *subfmt)
+ return 0;
add(len, );
}
break;
case 'C':
- fmt (2, (p, "%.2d", (1900 + tp->tm_year) / 100));
+ fmt (2, (p, "%02d", (1900 + tp->tm_year) / 100));
break;
+ case 'x':
+#ifdef _NL_CURRENT
+ subfmt = _NL_CURRENT (LC_TIME, D_FMT);
+ goto subformat;
+#endif
+ /* Fall through. */
case 'D': /* GNU extension. */
subfmt = "%m/%d/%y";
goto subformat;
case 'd':
- fmt(2, (p, "%.2d", tp->tm_mday));
+ fmt(2, (p, "%02d", tp->tm_mday));
break;
case 'e': /* GNU extension: %d, but blank-padded. */
@@ -198,11 +280,11 @@ DEFUN(strftime, (s, maxsize, format, tp),
break;
case 'H':
- fmt(2, (p, "%.2d", tp->tm_hour));
+ fmt(2, (p, "%02d", tp->tm_hour));
break;
case 'I':
- fmt(2, (p, "%.2d", hour12));
+ fmt(2, (p, "%02d", hour12));
break;
case 'k': /* GNU extension. */
@@ -214,15 +296,15 @@ DEFUN(strftime, (s, maxsize, format, tp),
break;
case 'j':
- fmt(3, (p, "%.3d", 1 + tp->tm_yday));
+ fmt(3, (p, "%03d", 1 + tp->tm_yday));
break;
case 'M':
- fmt(2, (p, "%.2d", tp->tm_min));
+ fmt(2, (p, "%02d", tp->tm_min));
break;
case 'm':
- fmt(2, (p, "%.2d", tp->tm_mon + 1));
+ fmt(2, (p, "%02d", tp->tm_mon + 1));
break;
case 'n': /* GNU extension. */
@@ -242,9 +324,15 @@ DEFUN(strftime, (s, maxsize, format, tp),
goto subformat;
case 'S':
- fmt(2, (p, "%.2d", tp->tm_sec));
+ fmt(2, (p, "%02d", tp->tm_sec));
break;
+ case 'X':
+#ifdef _NL_CURRENT
+ subfmt = _NL_CURRENT (LC_TIME, T_FMT);
+ goto subformat;
+#endif
+ /* Fall through. */
case 'T': /* GNU extenstion. */
subfmt = "%H:%M:%S";
goto subformat;
@@ -254,31 +342,23 @@ DEFUN(strftime, (s, maxsize, format, tp),
break;
case 'U':
- fmt(2, (p, "%.2u", y_week0));
+ fmt(2, (p, "%02u", y_week0));
break;
case 'W':
- fmt(2, (p, "%.2u", y_week1));
+ fmt(2, (p, "%02u", y_week1));
break;
case 'w':
- fmt(2, (p, "%.2d", tp->tm_wday));
+ fmt(2, (p, "%02d", tp->tm_wday));
break;
- case 'X':
- subfmt = _NL_CURRENT (LC_TIME, T_FMT);
- goto subformat;
-
- case 'x':
- subfmt = _NL_CURRENT (LC_TIME, D_FMT);
- goto subformat;
-
case 'Y':
- fmt(4, (p, "%.4d", 1900 + tp->tm_year));
+ fmt(4, (p, "%04d", 1900 + tp->tm_year));
break;
case 'y':
- fmt(2, (p, "%.2d", tp->tm_year % 100));
+ fmt(2, (p, "%02d", tp->tm_year % 100));
break;
case 'Z':
@@ -291,7 +371,7 @@ DEFUN(strftime, (s, maxsize, format, tp),
}
}
- if (p != NULL)
+ if (p)
*p = '\0';
return i;
}
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