Index: fusl/src/time/strptime.c |
diff --git a/fusl/src/time/strptime.c b/fusl/src/time/strptime.c |
new file mode 100644 |
index 0000000000000000000000000000000000000000..f41f55f24cf4bcf8a100178440a15e8efdfc14ad |
--- /dev/null |
+++ b/fusl/src/time/strptime.c |
@@ -0,0 +1,197 @@ |
+#include <stdlib.h> |
+#include <langinfo.h> |
+#include <time.h> |
+#include <ctype.h> |
+#include <stddef.h> |
+#include <string.h> |
+#include <strings.h> |
+ |
+char *strptime(const char *restrict s, const char *restrict f, struct tm *restrict tm) |
+{ |
+ int i, w, neg, adj, min, range, *dest, dummy; |
+ const char *ex; |
+ size_t len; |
+ int want_century = 0, century = 0; |
+ while (*f) { |
+ if (*f != '%') { |
+ if (isspace(*f)) for (; *s && isspace(*s); s++); |
+ else if (*s != *f) return 0; |
+ else s++; |
+ f++; |
+ continue; |
+ } |
+ f++; |
+ if (*f == '+') f++; |
+ if (isdigit(*f)) w=strtoul(f, (void *)&f, 10); |
+ else w=-1; |
+ adj=0; |
+ switch (*f++) { |
+ case 'a': case 'A': |
+ dest = &tm->tm_wday; |
+ min = ABDAY_1; |
+ range = 7; |
+ goto symbolic_range; |
+ case 'b': case 'B': case 'h': |
+ dest = &tm->tm_mon; |
+ min = ABMON_1; |
+ range = 12; |
+ goto symbolic_range; |
+ case 'c': |
+ s = strptime(s, nl_langinfo(D_T_FMT), tm); |
+ if (!s) return 0; |
+ break; |
+ case 'C': |
+ dest = ¢ury; |
+ if (w<0) w=2; |
+ want_century |= 2; |
+ goto numeric_digits; |
+ case 'd': case 'e': |
+ dest = &tm->tm_mday; |
+ min = 1; |
+ range = 31; |
+ goto numeric_range; |
+ case 'D': |
+ s = strptime(s, "%m/%d/%y", tm); |
+ if (!s) return 0; |
+ break; |
+ case 'H': |
+ dest = &tm->tm_hour; |
+ min = 0; |
+ range = 24; |
+ goto numeric_range; |
+ case 'I': |
+ dest = &tm->tm_hour; |
+ min = 1; |
+ range = 12; |
+ goto numeric_range; |
+ case 'j': |
+ dest = &tm->tm_yday; |
+ min = 1; |
+ range = 366; |
+ goto numeric_range; |
+ case 'm': |
+ dest = &tm->tm_mon; |
+ min = 1; |
+ range = 12; |
+ adj = 1; |
+ goto numeric_range; |
+ case 'M': |
+ dest = &tm->tm_min; |
+ min = 0; |
+ range = 60; |
+ goto numeric_range; |
+ case 'n': case 't': |
+ for (; *s && isspace(*s); s++); |
+ break; |
+ case 'p': |
+ ex = nl_langinfo(AM_STR); |
+ len = strlen(ex); |
+ if (!strncasecmp(s, ex, len)) { |
+ tm->tm_hour %= 12; |
+ break; |
+ } |
+ ex = nl_langinfo(PM_STR); |
+ len = strlen(ex); |
+ if (!strncasecmp(s, ex, len)) { |
+ tm->tm_hour %= 12; |
+ tm->tm_hour += 12; |
+ break; |
+ } |
+ return 0; |
+ case 'r': |
+ s = strptime(s, nl_langinfo(T_FMT_AMPM), tm); |
+ if (!s) return 0; |
+ break; |
+ case 'R': |
+ s = strptime(s, "%H:%M", tm); |
+ if (!s) return 0; |
+ break; |
+ case 'S': |
+ dest = &tm->tm_sec; |
+ min = 0; |
+ range = 61; |
+ goto numeric_range; |
+ case 'T': |
+ s = strptime(s, "%H:%M:%S", tm); |
+ if (!s) return 0; |
+ break; |
+ case 'U': |
+ case 'W': |
+ /* Throw away result, for now. (FIXME?) */ |
+ dest = &dummy; |
+ min = 0; |
+ range = 54; |
+ goto numeric_range; |
+ case 'w': |
+ dest = &tm->tm_wday; |
+ min = 0; |
+ range = 7; |
+ goto numeric_range; |
+ case 'x': |
+ s = strptime(s, nl_langinfo(D_FMT), tm); |
+ if (!s) return 0; |
+ break; |
+ case 'X': |
+ s = strptime(s, nl_langinfo(T_FMT), tm); |
+ if (!s) return 0; |
+ break; |
+ case 'y': |
+ dest = &tm->tm_year; |
+ w = 2; |
+ want_century |= 1; |
+ goto numeric_digits; |
+ case 'Y': |
+ dest = &tm->tm_year; |
+ if (w<0) w=4; |
+ adj = 1900; |
+ want_century = 0; |
+ goto numeric_digits; |
+ case '%': |
+ if (*s++ != '%') return 0; |
+ break; |
+ default: |
+ return 0; |
+ numeric_range: |
+ if (!isdigit(*s)) return 0; |
+ *dest = 0; |
+ for (i=1; i<=min+range && isdigit(*s); i*=10) |
+ *dest = *dest * 10 + *s++ - '0'; |
+ if (*dest - min >= (unsigned)range) return 0; |
+ *dest -= adj; |
+ switch((char *)dest - (char *)tm) { |
+ case offsetof(struct tm, tm_yday): |
+ ; |
+ } |
+ goto update; |
+ numeric_digits: |
+ neg = 0; |
+ if (*s == '+') s++; |
+ else if (*s == '-') neg=1, s++; |
+ if (!isdigit(*s)) return 0; |
+ for (*dest=i=0; i<w && isdigit(*s); i++) |
+ *dest = *dest * 10 + *s++ - '0'; |
+ if (neg) *dest = -*dest; |
+ *dest -= adj; |
+ goto update; |
+ symbolic_range: |
+ for (i=2*range-1; i>=0; i--) { |
+ ex = nl_langinfo(min+i); |
+ len = strlen(ex); |
+ if (strncasecmp(s, ex, len)) continue; |
+ s += len; |
+ *dest = i % range; |
+ break; |
+ } |
+ if (i<0) return 0; |
+ goto update; |
+ update: |
+ //FIXME |
+ ; |
+ } |
+ } |
+ if (want_century) { |
+ if (want_century & 2) tm->tm_year += century * 100 - 1900; |
+ else if (tm->tm_year <= 68) tm->tm_year += 100; |
+ } |
+ return (char *)s; |
+} |