+ "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
+ ** C99 requires this format.
+ ** Using just numbers (as here) makes Quakers happier;
+ ** it's also compatible with SVR4.
+ */
+ "%m/%d/%y",
+
+ /*
+ ** c_fmt
+ ** C99 requires this format.
+ ** Previously this code used "%D %X", but we now conform to C99.
+ ** Note that
+ ** "%a %b %d %H:%M:%S %Y"
+ ** is used by Solaris 2.3.
+ */
+ "%a %b %e %T %Y",
+
+ /* am */
+ "AM",
+
+ /* pm */
+ "PM",
+
+ /* date_fmt */
+ "%a %b %e %H:%M:%S %Z %Y"
+};
+
+
+static char *
+_add(const char * str, char * pt, const char * const ptlim)
+{
+ while (pt < ptlim && (*pt = *str++) != '\0')
+ ++pt;
+ return pt;
+}
+
+
+static char *
+_conv(const int n, const char * const format, char * const pt, const char * const ptlim)
+{
+ char buf[INT_STRLEN_MAXIMUM(int) + 1];
+
+ (void) _snprintf(buf, sizeof buf, format, n);
+ return _add(buf, pt, ptlim);
+}
+
+
+static char *
+_fmt(const char * format, const struct tm * const t, char * pt, const char * const ptlim, int * warnp)
+{
+ for ( ; *format; ++format) {
+ if (*format == '%') {
+label:
+ switch (*++format) {
+ case '\0':
+ --format;
+ break;
+ case 'A':
+ pt = _add((t->tm_wday < 0 ||
+ t->tm_wday >= DAYSPERWEEK) ?
+ "?" : Locale->weekday[t->tm_wday],
+ pt, ptlim);
+ continue;
+ case 'a':
+ pt = _add((t->tm_wday < 0 ||
+ t->tm_wday >= DAYSPERWEEK) ?
+ "?" : Locale->wday[t->tm_wday],
+ pt, ptlim);
+ continue;
+ case 'B':
+ pt = _add((t->tm_mon < 0 ||
+ t->tm_mon >= MONSPERYEAR) ?
+ "?" : Locale->month[t->tm_mon],
+ pt, ptlim);
+ continue;
+ case 'b':
+ case 'h':
+ pt = _add((t->tm_mon < 0 ||
+ t->tm_mon >= MONSPERYEAR) ?
+ "?" : Locale->mon[t->tm_mon],
+ pt, ptlim);
+ continue;
+ case 'C':
+ /*
+ ** %C used to do a...
+ ** _fmt("%a %b %e %X %Y", t);
+ ** ...whereas now POSIX 1003.2 calls for
+ ** something completely different.
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv((t->tm_year + TM_YEAR_BASE) / 100,
+ "%02d", pt, ptlim);
+ continue;
+ case 'c':
+ {
+ int warn2 = IN_SOME;
+
+ pt = _fmt(Locale->c_fmt, t, pt, ptlim, warnp);
+ if (warn2 == IN_ALL)
+ warn2 = IN_THIS;
+ if (warn2 > *warnp)
+ *warnp = warn2;
+ }
+ continue;
+ case 'D':
+ pt = _fmt("%m/%d/%y", t, pt, ptlim, warnp);
+ continue;
+ case 'd':
+ pt = _conv(t->tm_mday, "%02d", pt, ptlim);
+ continue;
+ case 'E':
+ case 'O':
+ /*
+ ** C99 locale modifiers.
+ ** The sequences
+ ** %Ec %EC %Ex %EX %Ey %EY
+ ** %Od %oe %OH %OI %Om %OM
+ ** %OS %Ou %OU %OV %Ow %OW %Oy
+ ** are supposed to provide alternate
+ ** representations.
+ */
+ goto label;
+ case 'e':
+ pt = _conv(t->tm_mday, "%2d", pt, ptlim);
+ continue;
+ case 'F':
+ pt = _fmt("%Y-%m-%d", t, pt, ptlim, warnp);
+ continue;
+ case 'H':
+ pt = _conv(t->tm_hour, "%02d", pt, ptlim);
+ continue;
+ case 'I':
+ pt = _conv((t->tm_hour % 12) ?
+ (t->tm_hour % 12) : 12,
+ "%02d", pt, ptlim);
+ continue;
+ case 'j':
+ pt = _conv(t->tm_yday + 1, "%03d", pt, ptlim);
+ continue;
+ case 'k':
+ /*
+ ** This used to be...
+ ** _conv(t->tm_hour % 12 ?
+ ** t->tm_hour % 12 : 12, 2, ' ');
+ ** ...and has been changed to the below to
+ ** match SunOS 4.1.1 and Arnold Robbins'
+ ** strftime version 3.0. That is, "%k" and
+ ** "%l" have been swapped.
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv(t->tm_hour, "%2d", pt, ptlim);
+ continue;
+#ifdef KITCHEN_SINK
+ case 'K':
+ /*
+ ** After all this time, still unclaimed!
+ */
+ pt = _add("kitchen sink", pt, ptlim);
+ continue;
+#endif /* defined KITCHEN_SINK */
+ case 'l':
+ /*
+ ** This used to be...
+ ** _conv(t->tm_hour, 2, ' ');
+ ** ...and has been changed to the below to
+ ** match SunOS 4.1.1 and Arnold Robbin's
+ ** strftime version 3.0. That is, "%k" and
+ ** "%l" have been swapped.
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv((t->tm_hour % 12) ?
+ (t->tm_hour % 12) : 12,
+ "%2d", pt, ptlim);
+ continue;
+ case 'M':
+ pt = _conv(t->tm_min, "%02d", pt, ptlim);
+ continue;
+ case 'm':
+ pt = _conv(t->tm_mon + 1, "%02d", pt, ptlim);
+ continue;
+ case 'n':
+ pt = _add("\n", pt, ptlim);
+ continue;
+ case 'p':
+ pt = _add((t->tm_hour >= (HOURSPERDAY / 2)) ?
+ Locale->pm :
+ Locale->am,
+ pt, ptlim);
+ continue;
+ case 'R':
+ pt = _fmt("%H:%M", t, pt, ptlim, warnp);
+ continue;
+ case 'r':
+ pt = _fmt("%I:%M:%S %p", t, pt, ptlim, warnp);
+ continue;
+ case 'S':
+ pt = _conv(t->tm_sec, "%02d", pt, ptlim);
+ continue;
+ case 's':
+ {
+ struct tm tm;
+ char buf[INT_STRLEN_MAXIMUM(
+ time_t) + 1];
+ time_t mkt;
+
+ tm = *t;
+ mkt = mktime(&tm);
+ if (TYPE_SIGNED(time_t))
+ (void) _snprintf(buf, sizeof buf,
+ "%ld", (long) mkt);
+ else (void) _snprintf(buf, sizeof buf,
+ "%lu", (unsigned long) mkt);
+ pt = _add(buf, pt, ptlim);
+ }
+ continue;
+ case 'T':
+ pt = _fmt("%H:%M:%S", t, pt, ptlim, warnp);
+ continue;
+ case 't':
+ pt = _add("\t", pt, ptlim);
+ continue;
+ case 'U':
+ pt = _conv((t->tm_yday + DAYSPERWEEK -
+ t->tm_wday) / DAYSPERWEEK,
+ "%02d", pt, ptlim);
+ continue;
+ case 'u':
+ /*
+ ** From Arnold Robbins' strftime version 3.0:
+ ** "ISO 8601: Weekday as a decimal number
+ ** [1 (Monday) - 7]"
+ ** (ado, 1993-05-24)
+ */
+ pt = _conv((t->tm_wday == 0) ?
+ DAYSPERWEEK : t->tm_wday,
+ "%d", pt, ptlim);
+ continue;
+ case 'V': /* ISO 8601 week number */
+ case 'G': /* ISO 8601 year (four digits) */
+ case 'g': /* ISO 8601 year (two digits) */
+ {
+ int year;
+ int yday;
+ int wday;
+ int w;
+
+ year = t->tm_year + TM_YEAR_BASE;
+ yday = t->tm_yday;
+ wday = t->tm_wday;
+ for ( ; ; ) {
+ int len;
+ int bot;
+ int top;
+
+ len = isleap(year) ?
+ DAYSPERLYEAR :
+ DAYSPERNYEAR;
+ /*
+ ** What yday (-3 ... 3) does
+ ** the ISO year begin on?
+ */
+ bot = ((yday + 11 - wday) %
+ DAYSPERWEEK) - 3;
+ /*
+ ** What yday does the NEXT
+ ** ISO year begin on?
+ */
+ top = bot -
+ (len % DAYSPERWEEK);
+ if (top < -3)
+ top += DAYSPERWEEK;
+ top += len;
+ if (yday >= top) {
+ ++year;
+ w = 1;
+ break;
+ }
+ if (yday >= bot) {
+ w = 1 + ((yday - bot) /
+ DAYSPERWEEK);
+ break;
+ }
+ --year;
+ yday += isleap(year) ?
+ DAYSPERLYEAR :
+ DAYSPERNYEAR;
+ }
+ if (*format == 'V')
+ pt = _conv(w, "%02d",
+ pt, ptlim);
+ else if (*format == 'g') {
+ *warnp = IN_ALL;
+ pt = _conv(year % 100, "%02d",
+ pt, ptlim);
+ } else pt = _conv(year, "%04d",
+ pt, ptlim);
+ }
+ continue;
+ case 'v':
+ pt = _fmt("%e-%b-%Y", t, pt, ptlim, warnp);
+ continue;
+ case 'W':
+ pt = _conv((t->tm_yday + DAYSPERWEEK -
+ (t->tm_wday ?
+ (t->tm_wday - 1) :
+ (DAYSPERWEEK - 1))) / DAYSPERWEEK,
+ "%02d", pt, ptlim);
+ continue;
+ case 'w':
+ pt = _conv(t->tm_wday, "%d", pt, ptlim);
+ continue;
+ case 'X':
+ pt = _fmt(Locale->X_fmt, t, pt, ptlim, warnp);
+ continue;
+ case 'x':
+ {
+ int warn2 = IN_SOME;
+
+ pt = _fmt(Locale->x_fmt, t, pt, ptlim, &warn2);
+ if (warn2 == IN_ALL)
+ warn2 = IN_THIS;
+ if (warn2 > *warnp)
+ *warnp = warn2;
+ }
+ continue;
+ case 'y':
+ *warnp = IN_ALL;
+ pt = _conv((t->tm_year + TM_YEAR_BASE) % 100,
+ "%02d", pt, ptlim);
+ continue;
+ case 'Y':
+ pt = _conv(t->tm_year + TM_YEAR_BASE, "%04d",
+ pt, ptlim);
+ continue;
+ case 'Z':
+ if (t->tm_isdst >= 0)
+ pt = _add(tzname[t->tm_isdst != 0],
+ pt, ptlim);
+ /*
+ ** C99 says that %Z must be replaced by the
+ ** empty string if the time zone is not
+ ** determinable.
+ */
+ continue;
+ case 'z':
+ {
+ int diff = -timezone;
+ char const * sign;
+
+ if (diff < 0) {
+ sign = "-";
+ diff = -diff;
+ } else sign = "+";
+ pt = _add(sign, pt, ptlim);
+ diff /= 60;
+ pt = _conv((diff/60)*100 + diff%60,
+ "%04d", pt, ptlim);
+ }
+ continue;
+ case '+':
+ pt = _fmt(Locale->date_fmt, t, pt, ptlim,
+ warnp);
+ continue;
+ case '%':
+ default:
+ break;
+ }
+ }
+ if (pt == ptlim)
+ break;
+ *pt++ = *format;
+ }
+ return pt;
+}
+
+size_t
+strftime(char * const s, const size_t maxsize, const char *format, const struct tm * const t)
+{
+ char * p;
+ int warn;
+
+ //tzset();
projects / wxWidgets.git / blobdiff