char * our_strptime(pTHX_ const char *buf, const char *fmt, struct tm *tm) { char *ret; int got_GMT = 0; return _strptime(aTHX_ buf, fmt, tm, &got_GMT); }
char * strptime(const char *buf, const char *fmt, struct tm *tm) { struct century_relyear cr; cr.century = TM_YEAR_BASE; cr.relyear = -1; return (char*)(_strptime((const unsigned char*)buf, fmt, tm, &cr)); }
static char * _strptime(pTHX_ const char *buf, const char *fmt, struct tm *tm, int *got_GMT) { char c; const char *ptr; int i, len; int Ealternative, Oalternative; /* There seems to be a slightly improved version at * http://www.opensource.apple.com/source/Libc/Libc-583/stdtime/strptime-fbsd.c * which we may end up borrowing more from */ ptr = fmt; while (*ptr != 0) { if (*buf == 0) break; c = *ptr++; if (c != '%') { if (isspace((unsigned char)c)) while (*buf != 0 && isspace((unsigned char)*buf)) buf++; else if (c != *buf++) return 0; continue; } Ealternative = 0; Oalternative = 0; label: c = *ptr++; switch (c) { case 0: case '%': if (*buf++ != '%') return 0; break; case '+': buf = _strptime(aTHX_ buf, Locale->date_fmt, tm, got_GMT); if (buf == 0) return 0; break; case 'C': if (!isdigit((unsigned char)*buf)) return 0; /* XXX This will break for 3-digit centuries. */ len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 19) return 0; tm->tm_year = i * 100 - 1900; break; case 'c': /* NOTE: c_fmt is intentionally ignored */ buf = _strptime(aTHX_ buf, "%a %Ef %T %Y", tm, got_GMT); if (buf == 0) return 0; break; case 'D': buf = _strptime(aTHX_ buf, "%m/%d/%y", tm, got_GMT); if (buf == 0) return 0; break; case 'E': if (Ealternative || Oalternative) break; Ealternative++; goto label; case 'O': if (Ealternative || Oalternative) break; Oalternative++; goto label; case 'F': case 'f': if (!Ealternative) break; buf = _strptime(aTHX_ buf, (c == 'f') ? Locale->Ef_fmt : Locale->EF_fmt, tm, got_GMT); if (buf == 0) return 0; break; case 'R': buf = _strptime(aTHX_ buf, "%H:%M", tm, got_GMT); if (buf == 0) return 0; break; case 'r': buf = _strptime(aTHX_ buf, "%I:%M:%S %p", tm, got_GMT); if (buf == 0) return 0; break; case 'n': /* whitespace */ case 't': if (!isspace((unsigned char)*buf)) return 0; while (isspace((unsigned char)*buf)) buf++; break; case 'T': buf = _strptime(aTHX_ buf, "%H:%M:%S", tm, got_GMT); if (buf == 0) return 0; break; case 'X': buf = _strptime(aTHX_ buf, Locale->X_fmt, tm, got_GMT); if (buf == 0) return 0; break; case 'x': buf = _strptime(aTHX_ buf, Locale->x_fmt, tm, got_GMT); if (buf == 0) return 0; break; case 'j': if (!isdigit((unsigned char)*buf)) return 0; len = 3; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 1 || i > 366) return 0; tm->tm_yday = i - 1; break; case 'M': case 'S': if (*buf == 0 || isspace((unsigned char)*buf)) break; if (!isdigit((unsigned char)*buf)) return 0; len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'M') { if (i > 59) return 0; tm->tm_min = i; } else { if (i > 60) return 0; tm->tm_sec = i; } if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 'H': case 'I': case 'k': case 'l': /* * Of these, %l is the only specifier explicitly * documented as not being zero-padded. However, * there is no harm in allowing zero-padding. * * XXX The %l specifier may gobble one too many * digits if used incorrectly. */ if (!isdigit((unsigned char)*buf)) return 0; len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'H' || c == 'k') { if (i > 23) return 0; } else if (i > 12) return 0; tm->tm_hour = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 'p': /* * XXX This is bogus if parsed before hour-related * specifiers. */ len = strlen(Locale->am); if (strncasecmp(buf, Locale->am, len) == 0) { if (tm->tm_hour > 12) return 0; if (tm->tm_hour == 12) tm->tm_hour = 0; buf += len; break; } len = strlen(Locale->pm); if (strncasecmp(buf, Locale->pm, len) == 0) { if (tm->tm_hour > 12) return 0; if (tm->tm_hour != 12) tm->tm_hour += 12; buf += len; break; } return 0; case 'A': case 'a': for (i = 0; i < asizeof(Locale->weekday); i++) { if (c == 'A') { len = strlen(Locale->weekday[i]); if (strncasecmp(buf, Locale->weekday[i], len) == 0) break; } else { len = strlen(Locale->wday[i]); if (strncasecmp(buf, Locale->wday[i], len) == 0) break; } } if (i == asizeof(Locale->weekday)) return 0; tm->tm_wday = i; buf += len; break; case 'U': case 'W': /* * XXX This is bogus, as we can not assume any valid * information present in the tm structure at this * point to calculate a real value, so just check the * range for now. */ if (!isdigit((unsigned char)*buf)) return 0; len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i > 53) return 0; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 'w': if (!isdigit((unsigned char)*buf)) return 0; i = *buf - '0'; if (i > 6) return 0; tm->tm_wday = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 'd': case 'e': /* * The %e specifier is explicitly documented as not * being zero-padded but there is no harm in allowing * such padding. * * XXX The %e specifier may gobble one too many * digits if used incorrectly. */ if (!isdigit((unsigned char)*buf)) return 0; len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i > 31) return 0; tm->tm_mday = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 'B': case 'b': case 'h': for (i = 0; i < asizeof(Locale->month); i++) { if (Oalternative) { if (c == 'B') { len = strlen(Locale->alt_month[i]); if (strncasecmp(buf, Locale->alt_month[i], len) == 0) break; } } else { if (c == 'B') { len = strlen(Locale->month[i]); if (strncasecmp(buf, Locale->month[i], len) == 0) break; } else { len = strlen(Locale->mon[i]); if (strncasecmp(buf, Locale->mon[i], len) == 0) break; } } } if (i == asizeof(Locale->month)) return 0; tm->tm_mon = i; buf += len; break; case 'm': if (!isdigit((unsigned char)*buf)) return 0; len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 1 || i > 12) return 0; tm->tm_mon = i - 1; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 's': { char *cp; int sverrno; long n; time_t t; struct tm mytm; sverrno = errno; errno = 0; n = strtol(buf, &cp, 10); if (errno == ERANGE || (long)(t = n) != n) { errno = sverrno; return 0; } errno = sverrno; buf = cp; memset(&mytm, 0, sizeof(mytm)); my_init_tm(&mytm); /* XXX workaround - see my_init_tm() above */ mytm = *gmtime(&t); tm->tm_sec = mytm.tm_sec; tm->tm_min = mytm.tm_min; tm->tm_hour = mytm.tm_hour; tm->tm_mday = mytm.tm_mday; tm->tm_mon = mytm.tm_mon; tm->tm_year = mytm.tm_year; tm->tm_wday = mytm.tm_wday; tm->tm_yday = mytm.tm_yday; tm->tm_isdst = mytm.tm_isdst; } break; case 'Y': case 'y': if (*buf == 0 || isspace((unsigned char)*buf)) break; if (!isdigit((unsigned char)*buf)) return 0; len = (c == 'Y') ? 4 : 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'Y') i -= 1900; if (c == 'y' && i < 69) i += 100; if (i < 0) return 0; tm->tm_year = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) ptr++; break; case 'Z': { const char *cp; char *zonestr; for (cp = buf; *cp && isupper((unsigned char)*cp); ++cp) {/*empty*/} if (cp - buf) { zonestr = (char *)malloc(cp - buf + 1); if (!zonestr) { errno = ENOMEM; return 0; } strncpy(zonestr, buf, cp - buf); zonestr[cp - buf] = '\0'; my_tzset(aTHX); if (0 == strcmp(zonestr, "GMT")) { *got_GMT = 1; } free(zonestr); if (!*got_GMT) return 0; buf += cp - buf; } } break; case 'z': { int sign = 1; if (*buf != '+') { if (*buf == '-') sign = -1; else return 0; } buf++; i = 0; for (len = 4; len > 0; len--) { if (isdigit((int)*buf)) { i *= 10; i += *buf - '0'; buf++; } else return 0; } tm->tm_hour -= sign * (i / 100); tm->tm_min -= sign * (i % 100); *got_GMT = 1; } break; } } return (char *)buf; }
static char* _strptime(const char* buf, const char* fmt, struct tm* tm, int* GMTp) { char c; const char* ptr; int i, len; int Ealternative, Oalternative; struct lc_time_T* tptr = __get_current_time_locale(); ptr = fmt; while (*ptr != 0) { if (*buf == 0) { break; } c = *ptr++; if (c != '%') { if (isspace((unsigned char)c)) while (*buf != 0 && isspace((unsigned char)*buf)) { buf++; } else if (c != *buf++) { return 0; } continue; } Ealternative = 0; Oalternative = 0; label: c = *ptr++; switch (c) { case 0: case '%': if (*buf++ != '%') { return 0; } break; case '+': buf = _strptime(buf, tptr->date_fmt, tm, GMTp); if (buf == 0) { return 0; } break; case 'C': if (!isdigit((unsigned char)*buf)) { return 0; } /* XXX This will break for 3-digit centuries. */ len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 19) { return 0; } tm->tm_year = i * 100 - 1900; break; case 'c': buf = _strptime(buf, tptr->c_fmt, tm, GMTp); if (buf == 0) { return 0; } break; case 'D': buf = _strptime(buf, "%m/%d/%y", tm, GMTp); if (buf == 0) { return 0; } break; case 'E': if (Ealternative || Oalternative) { break; } Ealternative++; goto label; case 'O': if (Ealternative || Oalternative) { break; } Oalternative++; goto label; case 'F': buf = _strptime(buf, "%Y-%m-%d", tm, GMTp); if (buf == 0) { return 0; } break; case 'R': buf = _strptime(buf, "%H:%M", tm, GMTp); if (buf == 0) { return 0; } break; case 'r': buf = _strptime(buf, tptr->ampm_fmt, tm, GMTp); if (buf == 0) { return 0; } break; case 'T': buf = _strptime(buf, "%H:%M:%S", tm, GMTp); if (buf == 0) { return 0; } break; case 'X': buf = _strptime(buf, tptr->X_fmt, tm, GMTp); if (buf == 0) { return 0; } break; case 'x': buf = _strptime(buf, tptr->x_fmt, tm, GMTp); if (buf == 0) { return 0; } break; case 'j': if (!isdigit((unsigned char)*buf)) { return 0; } len = 3; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 1 || i > 366) { return 0; } tm->tm_yday = i - 1; break; case 'M': case 'S': if (*buf == 0 || isspace((unsigned char)*buf)) { break; } if (!isdigit((unsigned char)*buf)) { return 0; } len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'M') { if (i > 59) { return 0; } tm->tm_min = i; } else { if (i > 60) { return 0; } tm->tm_sec = i; } if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 'H': case 'I': case 'k': case 'l': /* * Of these, %l is the only specifier explicitly * documented as not being zero-padded. However, * there is no harm in allowing zero-padding. * * XXX The %l specifier may gobble one too many * digits if used incorrectly. */ if (!isdigit((unsigned char)*buf)) { return 0; } len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'H' || c == 'k') { if (i > 23) { return 0; } } else if (i > 12) { return 0; } tm->tm_hour = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 'p': /* * XXX This is bogus if parsed before hour-related * specifiers. */ len = strlen(tptr->am); if (strncasecmp(buf, tptr->am, len) == 0) { if (tm->tm_hour > 12) { return 0; } if (tm->tm_hour == 12) { tm->tm_hour = 0; } buf += len; break; } len = strlen(tptr->pm); if (strncasecmp(buf, tptr->pm, len) == 0) { if (tm->tm_hour > 12) { return 0; } if (tm->tm_hour != 12) { tm->tm_hour += 12; } buf += len; break; } return 0; case 'A': case 'a': for (i = 0; i < asizeof(tptr->weekday); i++) { len = strlen(tptr->weekday[i]); if (strncasecmp(buf, tptr->weekday[i], len) == 0) { break; } len = strlen(tptr->wday[i]); if (strncasecmp(buf, tptr->wday[i], len) == 0) { break; } } if (i == asizeof(tptr->weekday)) { return 0; } tm->tm_wday = i; buf += len; break; case 'U': case 'W': /* * XXX This is bogus, as we can not assume any valid * information present in the tm structure at this * point to calculate a real value, so just check the * range for now. */ if (!isdigit((unsigned char)*buf)) { return 0; } len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i > 53) { return 0; } if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 'w': if (!isdigit((unsigned char)*buf)) { return 0; } i = *buf - '0'; if (i > 6) { return 0; } tm->tm_wday = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 'd': case 'e': /* * The %e specifier is explicitly documented as not * being zero-padded but there is no harm in allowing * such padding. * * XXX The %e specifier may gobble one too many * digits if used incorrectly. */ if (!isdigit((unsigned char)*buf)) { return 0; } len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i > 31) { return 0; } tm->tm_mday = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 'B': case 'b': case 'h': for (i = 0; i < asizeof(tptr->month); i++) { if (Oalternative) { if (c == 'B') { len = strlen(tptr->alt_month[i]); if (strncasecmp(buf, tptr->alt_month[i], len) == 0) { break; } } } else { len = strlen(tptr->month[i]); if (strncasecmp(buf, tptr->month[i], len) == 0) { break; } len = strlen(tptr->mon[i]); if (strncasecmp(buf, tptr->mon[i], len) == 0) { break; } } } if (i == asizeof(tptr->month)) { return 0; } tm->tm_mon = i; buf += len; break; case 'm': if (!isdigit((unsigned char)*buf)) { return 0; } len = 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 1 || i > 12) { return 0; } tm->tm_mon = i - 1; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 's': { char* cp; int sverrno; long n; time_t t; sverrno = errno; errno = 0; n = strtol(buf, &cp, 10); if (errno == ERANGE || (long)(t = n) != n) { errno = sverrno; return 0; } errno = sverrno; buf = cp; gmtime_r(&t, tm); *GMTp = 1; } break; case 'Y': case 'y': if (*buf == 0 || isspace((unsigned char)*buf)) { break; } if (!isdigit((unsigned char)*buf)) { return 0; } len = (c == 'Y') ? 4 : 2; for (i = 0; len && *buf != 0 && isdigit((unsigned char)*buf); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'Y') { i -= 1900; } if (c == 'y' && i < 69) { i += 100; } if (i < 0) { return 0; } tm->tm_year = i; if (*buf != 0 && isspace((unsigned char)*buf)) while (*ptr != 0 && !isspace((unsigned char)*ptr)) { ptr++; } break; case 'Z': { const char* cp; char* zonestr; for (cp = buf; *cp && isupper((unsigned char)*cp); ++cp) { /*empty*/ } if (cp - buf) { zonestr = alloca(cp - buf + 1); strncpy(zonestr, buf, cp - buf); zonestr[cp - buf] = '\0'; tzset(); if (0 == strcmp(zonestr, "GMT")) { *GMTp = 1; } else if (0 == strcmp(zonestr, tzname[0])) { tm->tm_isdst = 0; } else if (0 == strcmp(zonestr, tzname[1])) { tm->tm_isdst = 1; } else { return 0; } buf += cp - buf; } } break; } } return (char*)buf; }
} else { return 0; } buf += cp - buf; } } break; } } return (char*)buf; } char* strptime(const char* __restrict buf, const char* __restrict fmt, struct tm* __restrict tm) { char* ret; int gmt; gmt = 0; ret = _strptime(buf, fmt, tm, &gmt); if (ret && gmt) { time_t t = timegm(tm); localtime_r(&t, tm); } return (ret); }
static char * _strptime(const char *buf, const char *fmt, struct tm *tm, int initialize) { unsigned char c; const unsigned char *bp, *ep; size_t len; int alt_format, i, offs; int neg = 0; static int century, relyear; if (initialize) { century = TM_YEAR_BASE; relyear = -1; } bp = (unsigned char *)buf; while ((c = *fmt) != '\0') { /* Clear `alternate' modifier prior to new conversion. */ alt_format = 0; /* Eat up white-space. */ if (isspace(c)) { while (isspace(*bp)) bp++; fmt++; continue; } if ((c = *fmt++) != '%') goto literal; again: switch (c = *fmt++) { case '%': /* "%%" is converted to "%". */ literal: if (c != *bp++) return (NULL); break; /* * "Alternative" modifiers. Just set the appropriate flag * and start over again. */ case 'E': /* "%E?" alternative conversion modifier. */ _LEGAL_ALT(0); alt_format |= _ALT_E; goto again; case 'O': /* "%O?" alternative conversion modifier. */ _LEGAL_ALT(0); alt_format |= _ALT_O; goto again; /* * "Complex" conversion rules, implemented through recursion. */ case 'c': /* Date and time, using the locale's format. */ _LEGAL_ALT(_ALT_E); if (!(bp = _strptime(bp, _ctloc(d_t_fmt), tm, 0))) return (NULL); break; case 'D': /* The date as "%m/%d/%y". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%m/%d/%y", tm, 0))) return (NULL); break; case 'F': /* The date as "%Y-%m-%d". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%Y-%m-%d", tm, 0))) return (NULL); continue; case 'R': /* The time as "%H:%M". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%H:%M", tm, 0))) return (NULL); break; case 'r': /* The time as "%I:%M:%S %p". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%I:%M:%S %p", tm, 0))) return (NULL); break; case 'T': /* The time as "%H:%M:%S". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%H:%M:%S", tm, 0))) return (NULL); break; case 'X': /* The time, using the locale's format. */ _LEGAL_ALT(_ALT_E); if (!(bp = _strptime(bp, _ctloc(t_fmt), tm, 0))) return (NULL); break; case 'x': /* The date, using the locale's format. */ _LEGAL_ALT(_ALT_E); if (!(bp = _strptime(bp, _ctloc(d_fmt), tm, 0))) return (NULL); break; /* * "Elementary" conversion rules. */ case 'A': /* The day of week, using the locale's form. */ case 'a': _LEGAL_ALT(0); for (i = 0; i < 7; i++) { /* Full name. */ len = strlen(_ctloc(day[i])); if (strncasecmp(_ctloc(day[i]), bp, len) == 0) break; /* Abbreviated name. */ len = strlen(_ctloc(abday[i])); if (strncasecmp(_ctloc(abday[i]), bp, len) == 0) break; } /* Nothing matched. */ if (i == 7) return (NULL); tm->tm_wday = i; bp += len; break; case 'B': /* The month, using the locale's form. */ case 'b': case 'h': _LEGAL_ALT(0); for (i = 0; i < 12; i++) { /* Full name. */ len = strlen(_ctloc(mon[i])); if (strncasecmp(_ctloc(mon[i]), bp, len) == 0) break; /* Abbreviated name. */ len = strlen(_ctloc(abmon[i])); if (strncasecmp(_ctloc(abmon[i]), bp, len) == 0) break; } /* Nothing matched. */ if (i == 12) return (NULL); tm->tm_mon = i; bp += len; break; case 'C': /* The century number. */ _LEGAL_ALT(_ALT_E); if (!(_conv_num(&bp, &i, 0, 99))) return (NULL); century = i * 100; break; case 'd': /* The day of month. */ case 'e': _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_mday, 1, 31))) return (NULL); break; case 'k': /* The hour (24-hour clock representation). */ _LEGAL_ALT(0); /* FALLTHROUGH */ case 'H': _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_hour, 0, 23))) return (NULL); break; case 'l': /* The hour (12-hour clock representation). */ _LEGAL_ALT(0); /* FALLTHROUGH */ case 'I': _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_hour, 1, 12))) return (NULL); break; case 'j': /* The day of year. */ _LEGAL_ALT(0); if (!(_conv_num(&bp, &tm->tm_yday, 1, 366))) return (NULL); tm->tm_yday--; break; case 'M': /* The minute. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_min, 0, 59))) return (NULL); break; case 'm': /* The month. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_mon, 1, 12))) return (NULL); tm->tm_mon--; break; case 'p': /* The locale's equivalent of AM/PM. */ _LEGAL_ALT(0); /* AM? */ len = strlen(_ctloc(am_pm[0])); if (strncasecmp(_ctloc(am_pm[0]), bp, len) == 0) { if (tm->tm_hour > 12) /* i.e., 13:00 AM ?! */ return (NULL); else if (tm->tm_hour == 12) tm->tm_hour = 0; bp += len; break; } /* PM? */ len = strlen(_ctloc(am_pm[1])); if (strncasecmp(_ctloc(am_pm[1]), bp, len) == 0) { if (tm->tm_hour > 12) /* i.e., 13:00 PM ?! */ return (NULL); else if (tm->tm_hour < 12) tm->tm_hour += 12; bp += len; break; } /* Nothing matched. */ return (NULL); case 'S': /* The seconds. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_sec, 0, 61))) return (NULL); break; case 'U': /* The week of year, beginning on sunday. */ case 'W': /* The week of year, beginning on monday. */ _LEGAL_ALT(_ALT_O); /* * XXX This is bogus, as we can not assume any valid * information present in the tm structure at this * point to calculate a real value, so just check the * range for now. */ if (!(_conv_num(&bp, &i, 0, 53))) return (NULL); break; case 'w': /* The day of week, beginning on sunday. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_wday, 0, 6))) return (NULL); break; case 'u': /* The day of week, monday = 1. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &i, 1, 7))) return (NULL); tm->tm_wday = i % 7; continue; case 'g': /* The year corresponding to the ISO week * number but without the century. */ if (!(_conv_num(&bp, &i, 0, 99))) return (NULL); continue; case 'G': /* The year corresponding to the ISO week * number with century. */ do bp++; while (isdigit(*bp)); continue; case 'V': /* The ISO 8601:1988 week number as decimal */ if (!(_conv_num(&bp, &i, 0, 53))) return (NULL); continue; case 'Y': /* The year. */ _LEGAL_ALT(_ALT_E); if (!(_conv_num(&bp, &i, 0, 9999))) return (NULL); relyear = -1; tm->tm_year = i - TM_YEAR_BASE; break; case 'y': /* The year within the century (2 digits). */ _LEGAL_ALT(_ALT_E | _ALT_O); if (!(_conv_num(&bp, &relyear, 0, 99))) return (NULL); break; case 'Z': tzset(); if (strncmp((const char *)bp, gmt, 3) == 0) { tm->tm_isdst = 0; #ifdef TM_GMTOFF tm->TM_GMTOFF = 0; #endif #ifdef TM_ZONE tm->TM_ZONE = gmt; #endif bp += 3; } else { ep = _find_string(bp, &i, (const char * const *)tzname, NULL, 2); if (ep != NULL) { tm->tm_isdst = i; #ifdef TM_GMTOFF tm->TM_GMTOFF = -(timezone); #endif #ifdef TM_ZONE tm->TM_ZONE = tzname[i]; #endif } bp = ep; } continue; case 'z': /* * We recognize all ISO 8601 formats: * Z = Zulu time/UTC * [+-]hhmm * [+-]hh:mm * [+-]hh * We recognize all RFC-822/RFC-2822 formats: * UT|GMT * North American : UTC offsets * E[DS]T = Eastern : -4 | -5 * C[DS]T = Central : -5 | -6 * M[DS]T = Mountain: -6 | -7 * P[DS]T = Pacific : -7 | -8 * Military * [A-IL-M] = -1 ... -9 (J not used) * [N-Y] = +1 ... +12 */ while (isspace(*bp)) bp++; switch (*bp++) { case 'G': if (*bp++ != 'M') return NULL; /*FALLTHROUGH*/ case 'U': if (*bp++ != 'T') return NULL; /*FALLTHROUGH*/ case 'Z': tm->tm_isdst = 0; #ifdef TM_GMTOFF tm->TM_GMTOFF = 0; #endif #ifdef TM_ZONE tm->TM_ZONE = utc; #endif continue; case '+': neg = 0; break; case '-': neg = 1; break; default: --bp; ep = _find_string(bp, &i, nast, NULL, 4); if (ep != NULL) { #ifdef TM_GMTOFF tm->TM_GMTOFF = -5 - i; #endif #ifdef TM_ZONE tm->TM_ZONE = __UNCONST(nast[i]); #endif bp = ep; continue; } ep = _find_string(bp, &i, nadt, NULL, 4); if (ep != NULL) { tm->tm_isdst = 1; #ifdef TM_GMTOFF tm->TM_GMTOFF = -4 - i; #endif #ifdef TM_ZONE tm->TM_ZONE = __UNCONST(nadt[i]); #endif bp = ep; continue; } if ((*bp >= 'A' && *bp <= 'I') || (*bp >= 'L' && *bp <= 'Y')) { #ifdef TM_GMTOFF /* Argh! No 'J'! */ if (*bp >= 'A' && *bp <= 'I') tm->TM_GMTOFF = ('A' - 1) - (int)*bp; else if (*bp >= 'L' && *bp <= 'M') tm->TM_GMTOFF = 'A' - (int)*bp; else if (*bp >= 'N' && *bp <= 'Y') tm->TM_GMTOFF = (int)*bp - 'M'; #endif #ifdef TM_ZONE tm->TM_ZONE = NULL; /* XXX */ #endif bp++; continue; } return NULL; } offs = 0; for (i = 0; i < 4; ) { if (isdigit(*bp)) { offs = offs * 10 + (*bp++ - '0'); i++; continue; } if (i == 2 && *bp == ':') { bp++; continue; } break; } switch (i) { case 2: offs *= 100; break; case 4: i = offs % 100; if (i >= 60) return NULL; /* Convert minutes into decimal */ offs = (offs / 100) * 100 + (i * 50) / 30; break; default: return NULL; } if (neg) offs = -offs; tm->tm_isdst = 0; /* XXX */ #ifdef TM_GMTOFF tm->TM_GMTOFF = offs; #endif #ifdef TM_ZONE tm->TM_ZONE = NULL; /* XXX */ #endif continue; /* * Miscellaneous conversions. */ case 'n': /* Any kind of white-space. */ case 't': _LEGAL_ALT(0); while (isspace(*bp)) bp++; break; default: /* Unknown/unsupported conversion. */ return (NULL); } } /* * We need to evaluate the two digit year spec (%y) * last as we can get a century spec (%C) at any time. */ if (relyear != -1) { if (century == TM_YEAR_BASE) { if (relyear <= 68) tm->tm_year = relyear + 2000 - TM_YEAR_BASE; else tm->tm_year = relyear + 1900 - TM_YEAR_BASE; } else { tm->tm_year = relyear + century - TM_YEAR_BASE; } } return ((char *)bp); }
char * strptime(const char *buf, const char *fmt, struct tm *tm) { return(_strptime(buf, fmt, tm, 1)); }
static char * _strptime(const char *buf, const char *fmt, struct tm *tm, int *GMTp, locale_t locale) { char c; const char *ptr; int day_offset = -1, wday_offset; int week_offset; int i, len; int flags; int Ealternative, Oalternative; const struct lc_time_T *tptr = __get_current_time_locale(locale); static int start_of_month[2][13] = { {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365}, {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366} }; flags = FLAG_NONE; ptr = fmt; while (*ptr != 0) { c = *ptr++; if (c != '%') { if (isspace_l((unsigned char)c, locale)) while (*buf != 0 && isspace_l((unsigned char)*buf, locale)) buf++; else if (c != *buf++) return (NULL); continue; } Ealternative = 0; Oalternative = 0; label: c = *ptr++; switch (c) { case '%': if (*buf++ != '%') return (NULL); break; case '+': buf = _strptime(buf, tptr->date_fmt, tm, GMTp, locale); if (buf == NULL) return (NULL); flags |= FLAG_WDAY | FLAG_MONTH | FLAG_MDAY | FLAG_YEAR; break; case 'C': if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); /* XXX This will break for 3-digit centuries. */ len = 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 19) return (NULL); tm->tm_year = i * 100 - TM_YEAR_BASE; flags |= FLAG_YEAR; break; case 'c': buf = _strptime(buf, tptr->c_fmt, tm, GMTp, locale); if (buf == NULL) return (NULL); flags |= FLAG_WDAY | FLAG_MONTH | FLAG_MDAY | FLAG_YEAR; break; case 'D': buf = _strptime(buf, "%m/%d/%y", tm, GMTp, locale); if (buf == NULL) return (NULL); flags |= FLAG_MONTH | FLAG_MDAY | FLAG_YEAR; break; case 'E': if (Ealternative || Oalternative) break; Ealternative++; goto label; case 'O': if (Ealternative || Oalternative) break; Oalternative++; goto label; case 'F': buf = _strptime(buf, "%Y-%m-%d", tm, GMTp, locale); if (buf == NULL) return (NULL); flags |= FLAG_MONTH | FLAG_MDAY | FLAG_YEAR; break; case 'R': buf = _strptime(buf, "%H:%M", tm, GMTp, locale); if (buf == NULL) return (NULL); break; case 'r': buf = _strptime(buf, tptr->ampm_fmt, tm, GMTp, locale); if (buf == NULL) return (NULL); break; case 'T': buf = _strptime(buf, "%H:%M:%S", tm, GMTp, locale); if (buf == NULL) return (NULL); break; case 'X': buf = _strptime(buf, tptr->X_fmt, tm, GMTp, locale); if (buf == NULL) return (NULL); break; case 'x': buf = _strptime(buf, tptr->x_fmt, tm, GMTp, locale); if (buf == NULL) return (NULL); flags |= FLAG_MONTH | FLAG_MDAY | FLAG_YEAR; break; case 'j': if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = 3; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 1 || i > 366) return (NULL); tm->tm_yday = i - 1; flags |= FLAG_YDAY; break; case 'M': case 'S': if (*buf == 0 || isspace_l((unsigned char)*buf, locale)) break; if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'M') { if (i > 59) return (NULL); tm->tm_min = i; } else { if (i > 60) return (NULL); tm->tm_sec = i; } break; case 'H': case 'I': case 'k': case 'l': /* * Of these, %l is the only specifier explicitly * documented as not being zero-padded. However, * there is no harm in allowing zero-padding. * * XXX The %l specifier may gobble one too many * digits if used incorrectly. */ if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'H' || c == 'k') { if (i > 23) return (NULL); } else if (i > 12) return (NULL); tm->tm_hour = i; break; case 'p': /* * XXX This is bogus if parsed before hour-related * specifiers. */ len = strlen(tptr->am); if (strncasecmp_l(buf, tptr->am, len, locale) == 0) { if (tm->tm_hour > 12) return (NULL); if (tm->tm_hour == 12) tm->tm_hour = 0; buf += len; break; } len = strlen(tptr->pm); if (strncasecmp_l(buf, tptr->pm, len, locale) == 0) { if (tm->tm_hour > 12) return (NULL); if (tm->tm_hour != 12) tm->tm_hour += 12; buf += len; break; } return (NULL); case 'A': case 'a': for (i = 0; i < asizeof(tptr->weekday); i++) { len = strlen(tptr->weekday[i]); if (strncasecmp_l(buf, tptr->weekday[i], len, locale) == 0) break; len = strlen(tptr->wday[i]); if (strncasecmp_l(buf, tptr->wday[i], len, locale) == 0) break; } if (i == asizeof(tptr->weekday)) return (NULL); buf += len; tm->tm_wday = i; flags |= FLAG_WDAY; break; case 'U': case 'W': /* * XXX This is bogus, as we can not assume any valid * information present in the tm structure at this * point to calculate a real value, so just check the * range for now. */ if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (i > 53) return (NULL); if (c == 'U') day_offset = TM_SUNDAY; else day_offset = TM_MONDAY; week_offset = i; break; case 'w': if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); i = *buf - '0'; buf++; if (i > 6) return (NULL); tm->tm_wday = i; flags |= FLAG_WDAY; break; case 'e': /* * With %e format, our strftime(3) adds a blank space * before single digits. */ if (*buf != 0 && isspace_l((unsigned char)*buf, locale)) buf++; /* FALLTHROUGH */ case 'd': /* * The %e specifier was once explicitly documented as * not being zero-padded but was later changed to * equivalent to %d. There is no harm in allowing * such padding. * * XXX The %e specifier may gobble one too many * digits if used incorrectly. */ if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (i > 31) return (NULL); tm->tm_mday = i; flags |= FLAG_MDAY; break; case 'B': case 'b': case 'h': for (i = 0; i < asizeof(tptr->month); i++) { if (Oalternative) { if (c == 'B') { len = strlen(tptr->alt_month[i]); if (strncasecmp_l(buf, tptr->alt_month[i], len, locale) == 0) break; } } else { len = strlen(tptr->month[i]); if (strncasecmp_l(buf, tptr->month[i], len, locale) == 0) break; } } /* * Try the abbreviated month name if the full name * wasn't found and Oalternative was not requested. */ if (i == asizeof(tptr->month) && !Oalternative) { for (i = 0; i < asizeof(tptr->month); i++) { len = strlen(tptr->mon[i]); if (strncasecmp_l(buf, tptr->mon[i], len, locale) == 0) break; } } if (i == asizeof(tptr->month)) return (NULL); tm->tm_mon = i; buf += len; flags |= FLAG_MONTH; break; case 'm': if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (i < 1 || i > 12) return (NULL); tm->tm_mon = i - 1; flags |= FLAG_MONTH; break; case 's': { char *cp; int sverrno; long n; time_t t; sverrno = errno; errno = 0; n = strtol_l(buf, &cp, 10, locale); if (errno == ERANGE || (long)(t = n) != n) { errno = sverrno; return (NULL); } errno = sverrno; buf = cp; if (gmtime_r(&t, tm) == NULL) return (NULL); *GMTp = 1; flags |= FLAG_YDAY | FLAG_WDAY | FLAG_MONTH | FLAG_MDAY | FLAG_YEAR; } break; case 'Y': case 'y': if (*buf == 0 || isspace_l((unsigned char)*buf, locale)) break; if (!isdigit_l((unsigned char)*buf, locale)) return (NULL); len = (c == 'Y') ? 4 : 2; for (i = 0; len && *buf != 0 && isdigit_l((unsigned char)*buf, locale); buf++) { i *= 10; i += *buf - '0'; len--; } if (c == 'Y') i -= TM_YEAR_BASE; if (c == 'y' && i < 69) i += 100; if (i < 0) return (NULL); tm->tm_year = i; flags |= FLAG_YEAR; break; case 'Z': { const char *cp; char *zonestr; for (cp = buf; *cp && isupper_l((unsigned char)*cp, locale); ++cp) { /*empty*/ } if (cp - buf) { zonestr = alloca(cp - buf + 1); strncpy(zonestr, buf, cp - buf); zonestr[cp - buf] = '\0'; tzset(); if (0 == strcmp(zonestr, "GMT") || 0 == strcmp(zonestr, "UTC")) { *GMTp = 1; } else if (0 == strcmp(zonestr, tzname[0])) { tm->tm_isdst = 0; } else if (0 == strcmp(zonestr, tzname[1])) { tm->tm_isdst = 1; } else { return (NULL); } buf += cp - buf; } } break; case 'z': { int sign = 1; len = 4; /* RFC 822/ISO 8601 */ if (*buf != '+') { if (*buf == '-') sign = -1; else if (*buf == 'Z') /* ISO 8601 Z (UTC) */ len = 0; else return (NULL); } buf++; i = 0; for (; len > 0; len--) { if (isdigit_l((unsigned char)*buf, locale)) { i *= 10; i += *buf - '0'; buf++; } else if (*buf == ':' && len == 2) { buf++; /* ISO 8601 +hh:mm */ if (isdigit_l((unsigned char)*buf, locale)) { i *= 10; i += *buf - '0'; buf++; } else { return (NULL); } } else if (len == 2) { i *= 100; /* ISO 8601 +hh */ break; } else { return (NULL); } } tm->tm_hour -= sign * (i / 100); tm->tm_min -= sign * (i % 100); *GMTp = 1; } break; case 'n': case 't': while (isspace_l((unsigned char)*buf, locale)) buf++; break; default: return (NULL); } } if (!(flags & FLAG_YDAY) && (flags & FLAG_YEAR)) { if ((flags & (FLAG_MONTH | FLAG_MDAY)) == (FLAG_MONTH | FLAG_MDAY)) { tm->tm_yday = start_of_month[isleap(tm->tm_year + TM_YEAR_BASE)][tm->tm_mon] + (tm->tm_mday - 1); flags |= FLAG_YDAY; } else if (day_offset != -1) { /* Set the date to the first Sunday (or Monday) * of the specified week of the year. */ if (!(flags & FLAG_WDAY)) { tm->tm_wday = day_offset; flags |= FLAG_WDAY; } tm->tm_yday = (7 - first_wday_of(tm->tm_year + TM_YEAR_BASE) + day_offset) % 7 + (week_offset - 1 + (tm->tm_wday == 0 ? day_offset : 0)) * 7 + tm->tm_wday - day_offset; flags |= FLAG_YDAY; } } if ((flags & (FLAG_YEAR | FLAG_YDAY)) == (FLAG_YEAR | FLAG_YDAY)) { if (!(flags & FLAG_MONTH)) { i = 0; while (tm->tm_yday >= start_of_month[isleap(tm->tm_year + TM_YEAR_BASE)][i]) i++; if (i > 12) { i = 1; tm->tm_yday -= start_of_month[isleap(tm->tm_year + TM_YEAR_BASE)][12]; tm->tm_year++; } tm->tm_mon = i - 1; flags |= FLAG_MONTH; } if (!(flags & FLAG_MDAY)) { tm->tm_mday = tm->tm_yday - start_of_month[isleap(tm->tm_year + TM_YEAR_BASE)] [tm->tm_mon] + 1; flags |= FLAG_MDAY; } if (!(flags & FLAG_WDAY)) { i = 0; wday_offset = first_wday_of(tm->tm_year); while (i++ <= tm->tm_yday) { if (wday_offset++ >= 6) wday_offset = 0; } tm->tm_wday = wday_offset; flags |= FLAG_WDAY; } } return ((char *)buf); }
} } return ((char *)buf); } char * strptime_l(const char * __restrict buf, const char * __restrict fmt, struct tm * __restrict tm, locale_t loc) { char *ret; int gmt; FIX_LOCALE(loc); gmt = 0; ret = _strptime(buf, fmt, tm, &gmt, loc); if (ret && gmt) { time_t t = timegm(tm); localtime_r(&t, tm); } return (ret); } char * strptime(const char * __restrict buf, const char * __restrict fmt, struct tm * __restrict tm) { return strptime_l(buf, fmt, tm, __get_locale()); }
static unsigned char * _strptime(const unsigned char *buf, const char *fmt, struct tm *tm, struct century_relyear *cr) { unsigned char c; const unsigned char *bp; size_t len = 0; int alt_format, i; bp = (unsigned char *)buf; while ((c = *fmt) != '\0') { /* Clear `alternate' modifier prior to new conversion. */ alt_format = 0; /* Eat up white-space. */ if (isspace(c)) { while (isspace(*bp)) bp++; fmt++; continue; } if ((c = *fmt++) != '%') goto literal; again: switch (c = *fmt++) { case '%': /* "%%" is converted to "%". */ literal: if (c != *bp++) return (NULL); break; /* * "Alternative" modifiers. Just set the appropriate flag * and start over again. */ case 'E': /* "%E?" alternative conversion modifier. */ _LEGAL_ALT(0); alt_format |= _ALT_E; goto again; case 'O': /* "%O?" alternative conversion modifier. */ _LEGAL_ALT(0); alt_format |= _ALT_O; goto again; /* * "Complex" conversion rules, implemented through recursion. */ case 'c': /* Date and time, using the locale's format. */ _LEGAL_ALT(_ALT_E); if (!(bp = _strptime(bp, _ctloc(d_t_fmt), tm, cr))) return (NULL); break; case 'D': /* The date as "%m/%d/%y". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%m/%d/%y", tm, cr))) return (NULL); break; case 'R': /* The time as "%H:%M". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%H:%M", tm, cr))) return (NULL); break; case 'r': /* The time as "%I:%M:%S %p". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%I:%M:%S %p", tm, cr))) return (NULL); break; case 'T': /* The time as "%H:%M:%S". */ _LEGAL_ALT(0); if (!(bp = _strptime(bp, "%H:%M:%S", tm, cr))) return (NULL); break; case 'X': /* The time, using the locale's format. */ _LEGAL_ALT(_ALT_E); if (!(bp = _strptime(bp, _ctloc(t_fmt), tm, cr))) return (NULL); break; case 'x': /* The date, using the locale's format. */ _LEGAL_ALT(_ALT_E); if (!(bp = _strptime(bp, _ctloc(d_fmt), tm, cr))) return (NULL); break; /* * "Elementary" conversion rules. */ case 'A': /* The day of week, using the locale's form. */ case 'a': _LEGAL_ALT(0); for (i = 0; i < 7; i++) { /* Full name. */ len = strlen(_ctloc(day[i])); if (strncasecmp(_ctloc(day[i]), (const char*)bp, len) == 0) break; /* Abbreviated name. */ len = strlen(_ctloc(abday[i])); if (strncasecmp(_ctloc(abday[i]), (const char*)bp, len) == 0) break; } /* Nothing matched. */ if (i == 7) return (NULL); tm->tm_wday = i; bp += len; break; case 'B': /* The month, using the locale's form. */ case 'b': case 'h': _LEGAL_ALT(0); for (i = 0; i < 12; i++) { /* Full name. */ len = strlen(_ctloc(mon[i])); if (strncasecmp(_ctloc(mon[i]), (const char*)bp, len) == 0) break; /* Abbreviated name. */ len = strlen(_ctloc(abmon[i])); if (strncasecmp(_ctloc(abmon[i]), (const char*)bp, len) == 0) break; } /* Nothing matched. */ if (i == 12) return (NULL); tm->tm_mon = i; bp += len; break; case 'C': /* The century number. */ _LEGAL_ALT(_ALT_E); if (!(_conv_num(&bp, &i, 0, 99))) return (NULL); cr->century = i * 100; break; case 'd': /* The day of month. */ case 'e': _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_mday, 1, 31))) return (NULL); break; case 'k': /* The hour (24-hour clock representation). */ _LEGAL_ALT(0); /* FALLTHROUGH */ case 'H': _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_hour, 0, 23))) return (NULL); break; case 'l': /* The hour (12-hour clock representation). */ _LEGAL_ALT(0); /* FALLTHROUGH */ case 'I': _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_hour, 1, 12))) return (NULL); break; case 'j': /* The day of year. */ _LEGAL_ALT(0); if (!(_conv_num(&bp, &tm->tm_yday, 1, 366))) return (NULL); tm->tm_yday--; break; case 'M': /* The minute. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_min, 0, 59))) return (NULL); break; case 'm': /* The month. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_mon, 1, 12))) return (NULL); tm->tm_mon--; break; case 'p': /* The locale's equivalent of AM/PM. */ _LEGAL_ALT(0); /* AM? */ len = strlen(_ctloc(am_pm[0])); if (strncasecmp(_ctloc(am_pm[0]), (const char*)bp, len) == 0) { if (tm->tm_hour > 12) /* i.e., 13:00 AM ?! */ return (NULL); else if (tm->tm_hour == 12) tm->tm_hour = 0; bp += len; break; } /* PM? */ len = strlen(_ctloc(am_pm[1])); if (strncasecmp(_ctloc(am_pm[1]), (const char*)bp, len) == 0) { if (tm->tm_hour > 12) /* i.e., 13:00 PM ?! */ return (NULL); else if (tm->tm_hour < 12) tm->tm_hour += 12; bp += len; break; } /* Nothing matched. */ return (NULL); case 'S': /* The seconds. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_sec, 0, 61))) return (NULL); break; case 'U': /* The week of year, beginning on sunday. */ case 'W': /* The week of year, beginning on monday. */ _LEGAL_ALT(_ALT_O); /* * XXX This is bogus, as we can not assume any valid * information present in the tm structure at this * point to calculate a real value, so just check the * range for now. */ if (!(_conv_num(&bp, &i, 0, 53))) return (NULL); break; case 'w': /* The day of week, beginning on sunday. */ _LEGAL_ALT(_ALT_O); if (!(_conv_num(&bp, &tm->tm_wday, 0, 6))) return (NULL); break; case 'Y': /* The year. */ _LEGAL_ALT(_ALT_E); if (!(_conv_num(&bp, &i, 0, 9999))) return (NULL); cr->relyear = -1; tm->tm_year = i - TM_YEAR_BASE; break; case 'y': /* The year within the century (2 digits). */ _LEGAL_ALT(_ALT_E | _ALT_O); if (!(_conv_num(&bp, &cr->relyear, 0, 99))) return (NULL); break; /* * Miscellaneous conversions. */ case 'n': /* Any kind of white-space. */ case 't': _LEGAL_ALT(0); while (isspace(*bp)) bp++; break; default: /* Unknown/unsupported conversion. */ return (NULL); } } /* * We need to evaluate the two digit year spec (%y) * last as we can get a century spec (%C) at any time. */ if (cr->relyear != -1) { if (cr->century == TM_YEAR_BASE) { if (cr->relyear <= 68) tm->tm_year = cr->relyear + 2000 - TM_YEAR_BASE; else tm->tm_year = cr->relyear + 1900 - TM_YEAR_BASE; } else { tm->tm_year = cr->relyear + cr->century - TM_YEAR_BASE; } } return (unsigned char*)bp; }