diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/time/strptime.c | 297 |
1 files changed, 149 insertions, 148 deletions
diff --git a/src/time/strptime.c b/src/time/strptime.c index db72e610..d9481d1b 100644 --- a/src/time/strptime.c +++ b/src/time/strptime.c @@ -2,177 +2,178 @@ #include <stdlib.h> #include <langinfo.h> #include <time.h> - -const char *__langinfo(nl_item); - -char *strptime(const char *s, const char *f, struct tm *tm) -{ - return NULL; -} - -#if 0 +#include <ctype.h> +#include <stddef.h> +#include <string.h> +#include <strings.h> char *strptime(const char *s, const char *f, struct tm *tm) { - nl_item item; - int *dest; - const char *fmt; - for (; *f; f++) { - if (isspace(*f)) goto whitespace; - if (*f == '%') { -do_fmt: - switch (*++f) { - case '%': - goto literal; - case 'E': - case 'O': - goto do_fmt; - case 'a': - item = ABDAY_1 + tm->tm_wday; - goto nl_strcat; - case 'A': - item = DAY_1 + tm->tm_wday; - goto nl_strcat; - case 'h': - case 'b': - item = ABMON_1 + tm->tm_mon; - goto nl_strcat; - case 'B': - item = MON_1 + tm->tm_mon; - goto nl_strcat; + int i, w, neg, adj, min, range, *dest; + const char *ex; + size_t len; + while (*f) { + if (*f != '%') { + if (isspace(*f)) for (; *s && isspace(*s); s++); + else if (*s != *f) return 0; + else s++; + f++; + } + 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': - item = D_T_FMT; - goto nl_strftime; + s = strptime(s, nl_langinfo(D_T_FMT), tm); + if (!s) return 0; + break; case 'C': - val = (1900+tm->tm_year) / 100; - fmt = "%02d"; - goto number; - case 'd': - val = tm->tm_mday; - fmt = "%02d"; - goto number; + case 'd': case 'e': + dest = &tm->tm_mday; + min = 1; + range = 31; + goto numeric_range; case 'D': - fmt = "%m/%d/%y"; - goto recu_strftime; - case 'e': - val = tm->tm_mday; - fmt = "%2d"; - goto number; - case 'F': - fmt = "%Y-%m-%d"; - goto recu_strftime; - case 'g': - // FIXME - val = 0; //week_based_year(tm)%100; - fmt = "%02d"; - goto number; - case 'G': - // FIXME - val = 0; //week_based_year(tm); - fmt = "%04d"; - goto number; + s = strptime(s, "%m/%d/%y", tm); + if (!s) return 0; + break; case 'H': - val = tm->tm_hour; - fmt = "%02d"; - goto number; + dest = &tm->tm_hour; + min = 0; + range = 24; + goto numeric_range; case 'I': - val = tm->tm_hour; - if (!val) val = 12; - else if (val > 12) val -= 12; - fmt = "%02d"; - goto number; + dest = &tm->tm_hour; + min = 1; + range = 12; + goto numeric_range; case 'j': - val = tm->tm_yday+1; - fmt = "%03d"; - goto number; + dest = &tm->tm_yday; + min = 1; + range = 366; + goto numeric_range; case 'm': - val = tm->tm_mon+1; - fmt = "%02d"; - goto number; + dest = &tm->tm_mon; + min = 1; + range = 12; + adj = 1; + goto numeric_range; case 'M': - val = tm->tm_min; - fmt = "%02d"; - goto number; - case 'n': - case 't': - goto whitespace; + dest = &tm->tm_min; + min = 0; + range = 60; + goto numeric_range; + case 'n': case 't': + for (; *s && isspace(*s); s++); + break; case 'p': - item = tm->tm_hour >= 12 ? PM_STR : AM_STR; - goto nl_strcat; + 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': - item = T_FMT_AMPM; - goto nl_strftime; + s = strptime(s, nl_langinfo(T_FMT_AMPM), tm); + if (!s) return 0; + break; case 'R': - fmt = "%H:%M"; - goto recu_strftime; + s = strptime(s, "%H:%M", tm); + if (!s) return 0; + break; case 'S': - val = tm->tm_sec; - fmt = "%02d"; - goto number; + dest = &tm->tm_sec; + min = 0; + range = 61; + goto numeric_range; case 'T': - fmt = "%H:%M:%S"; - goto recu_strftime; - case 'u': - val = tm->tm_wday ? tm->tm_wday : 7; - fmt = "%d"; - goto number; + s = strptime(s, "%H:%M:%S", tm); + if (!s) return 0; + break; case 'U': - case 'V': case 'W': - // FIXME: week number mess.. - continue; + //FIXME + return 0; case 'w': - val = tm->tm_wday; - fmt = "%d"; - goto number; + dest = &tm->tm_wday; + min = 0; + range = 7; + goto numeric_range; case 'x': - item = D_FMT; - goto nl_strftime; + s = strptime(s, nl_langinfo(D_FMT), tm); + if (!s) return 0; + break; case 'X': - item = T_FMT; - goto nl_strftime; + s = strptime(s, nl_langinfo(T_FMT), tm); + if (!s) return 0; + break; case 'y': - val = tm->tm_year % 100; - fmt = "%02d"; - goto number; + //FIXME + return 0; case 'Y': - val = tm->tm_year + 1900; - fmt = "%04d"; - goto number; - case 'z': - if (tm->tm_isdst < 0) continue; - val = timezone + (tm->tm_isdst) ? __dst_offset : 0; - l += snprintf(s+l, n-l, "%+02d%02d", val/60, abs(val%60)); - continue; - case 'Z': - if (tm->tm_isdst < 0 || !tzname[0] || !tzname[0][0]) - continue; - l += snprintf(s+l, n-l, "%s", tzname[!!tm->tm_isdst]); - continue; - } - default: - return NULL; + dest = &tm->tm_year; + if (w<0) w=4; + adj = 1900; + goto numeric_digits; + case '%': + if (*s++ != '%') return 0; + break; + 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 (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; + *dest = i % range; + break; + } + if (i<0) return 0; + goto update; + update: + //FIXME + ; } -literal: - if (*s++ != *f) return NULL; - continue; -whitespace: - while(isspace(*s)) s++; - continue; -number: - l += snprintf(s+l, n-l, fmt, val); - continue; -nl_strcat: - l += snprintf(s+l, n-l, "%s", __langinfo(item)); - continue; -nl_strftime: - fmt = __langinfo(item); -recu_strftime: - l += strftime(s+l, n-l, fmt, tm); } - if (l >= n) return 0; - s[l] = 0; - return l; + return (char *)s; } - -#endif |