| /* Convert a string representation of time to a time value. |
| Copyright (C) 1996, 1997, 1998, 1999, 2000 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public License as |
| published by the Free Software Foundation; either version 3 of the |
| License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; see the file COPYING.LIB. If not, |
| see <http://www.gnu.org/licenses/>. */ |
| |
| /* XXX This version of the implementation is not really complete. |
| Some of the fields cannot add information alone. But if seeing |
| some of them in the same format (such as year, week and weekday) |
| this is enough information for determining the date. */ |
| |
| #include "replace.h" |
| #include "system/locale.h" |
| #include "system/time.h" |
| |
| #ifndef __P |
| # if defined (__GNUC__) || (defined (__STDC__) && __STDC__) |
| # define __P(args) args |
| # else |
| # define __P(args) () |
| # endif /* GCC. */ |
| #endif /* Not __P. */ |
| |
| #if ! HAVE_LOCALTIME_R && ! defined localtime_r |
| # ifdef _LIBC |
| # define localtime_r __localtime_r |
| # else |
| /* Approximate localtime_r as best we can in its absence. */ |
| # define localtime_r my_localtime_r |
| static struct tm *localtime_r __P ((const time_t *, struct tm *)); |
| static struct tm * |
| localtime_r (t, tp) |
| const time_t *t; |
| struct tm *tp; |
| { |
| struct tm *l = localtime (t); |
| if (! l) |
| return 0; |
| *tp = *l; |
| return tp; |
| } |
| # endif /* ! _LIBC */ |
| #endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */ |
| |
| |
| #define match_char(ch1, ch2) if (ch1 != ch2) return NULL |
| #if defined __GNUC__ && __GNUC__ >= 2 |
| # define match_string(cs1, s2) \ |
| ({ size_t len = strlen (cs1); \ |
| int result = strncasecmp ((cs1), (s2), len) == 0; \ |
| if (result) (s2) += len; \ |
| result; }) |
| #else |
| /* Oh come on. Get a reasonable compiler. */ |
| # define match_string(cs1, s2) \ |
| (strncasecmp ((cs1), (s2), strlen (cs1)) ? 0 : ((s2) += strlen (cs1), 1)) |
| #endif |
| /* We intentionally do not use isdigit() for testing because this will |
| lead to problems with the wide character version. */ |
| #define get_number(from, to, n) \ |
| do { \ |
| int __n = n; \ |
| val = 0; \ |
| while (*rp == ' ') \ |
| ++rp; \ |
| if (*rp < '0' || *rp > '9') \ |
| return NULL; \ |
| do { \ |
| val *= 10; \ |
| val += *rp++ - '0'; \ |
| } while (--__n > 0 && val * 10 <= to && *rp >= '0' && *rp <= '9'); \ |
| if (val < from || val > to) \ |
| return NULL; \ |
| } while (0) |
| #ifdef _NL_CURRENT |
| # define get_alt_number(from, to, n) \ |
| ({ \ |
| __label__ do_normal; \ |
| if (*decided != raw) \ |
| { \ |
| const char *alts = _NL_CURRENT (LC_TIME, ALT_DIGITS); \ |
| int __n = n; \ |
| int any = 0; \ |
| while (*rp == ' ') \ |
| ++rp; \ |
| val = 0; \ |
| do { \ |
| val *= 10; \ |
| while (*alts != '\0') \ |
| { \ |
| size_t len = strlen (alts); \ |
| if (strncasecmp (alts, rp, len) == 0) \ |
| break; \ |
| alts += len + 1; \ |
| ++val; \ |
| } \ |
| if (*alts == '\0') \ |
| { \ |
| if (*decided == not && ! any) \ |
| goto do_normal; \ |
| /* If we haven't read anything it's an error. */ \ |
| if (! any) \ |
| return NULL; \ |
| /* Correct the premature multiplication. */ \ |
| val /= 10; \ |
| break; \ |
| } \ |
| else \ |
| *decided = loc; \ |
| } while (--__n > 0 && val * 10 <= to); \ |
| if (val < from || val > to) \ |
| return NULL; \ |
| } \ |
| else \ |
| { \ |
| do_normal: \ |
| get_number (from, to, n); \ |
| } \ |
| 0; \ |
| }) |
| #else |
| # define get_alt_number(from, to, n) \ |
| /* We don't have the alternate representation. */ \ |
| get_number(from, to, n) |
| #endif |
| #define recursive(new_fmt) \ |
| (*(new_fmt) != '\0' \ |
| && (rp = strptime_internal (rp, (new_fmt), tm, decided, era_cnt)) != NULL) |
| |
| |
| #ifdef _LIBC |
| /* This is defined in locale/C-time.c in the GNU libc. */ |
| extern const struct locale_data _nl_C_LC_TIME; |
| extern const unsigned short int __mon_yday[2][13]; |
| |
| # define weekday_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (DAY_1)].string) |
| # define ab_weekday_name \ |
| (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABDAY_1)].string) |
| # define month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (MON_1)].string) |
| # define ab_month_name (&_nl_C_LC_TIME.values[_NL_ITEM_INDEX (ABMON_1)].string) |
| # define HERE_D_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_T_FMT)].string) |
| # define HERE_D_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (D_FMT)].string) |
| # define HERE_AM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (AM_STR)].string) |
| # define HERE_PM_STR (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (PM_STR)].string) |
| # define HERE_T_FMT_AMPM \ |
| (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT_AMPM)].string) |
| # define HERE_T_FMT (_nl_C_LC_TIME.values[_NL_ITEM_INDEX (T_FMT)].string) |
| |
| # define strncasecmp(s1, s2, n) __strncasecmp (s1, s2, n) |
| #else |
| static char const weekday_name[][10] = |
| { |
| "Sunday", "Monday", "Tuesday", "Wednesday", |
| "Thursday", "Friday", "Saturday" |
| }; |
| static char const ab_weekday_name[][4] = |
| { |
| "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" |
| }; |
| static char const month_name[][10] = |
| { |
| "January", "February", "March", "April", "May", "June", |
| "July", "August", "September", "October", "November", "December" |
| }; |
| static char const ab_month_name[][4] = |
| { |
| "Jan", "Feb", "Mar", "Apr", "May", "Jun", |
| "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" |
| }; |
| # define HERE_D_T_FMT "%a %b %e %H:%M:%S %Y" |
| # define HERE_D_FMT "%m/%d/%y" |
| # define HERE_AM_STR "AM" |
| # define HERE_PM_STR "PM" |
| # define HERE_T_FMT_AMPM "%I:%M:%S %p" |
| # define HERE_T_FMT "%H:%M:%S" |
| |
| static const unsigned short int __mon_yday[2][13] = |
| { |
| /* Normal years. */ |
| { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 }, |
| /* Leap years. */ |
| { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 } |
| }; |
| #endif |
| |
| /* Status of lookup: do we use the locale data or the raw data? */ |
| enum locale_status { not, loc, raw }; |
| |
| |
| #ifndef __isleap |
| /* Nonzero if YEAR is a leap year (every 4 years, |
| except every 100th isn't, and every 400th is). */ |
| # define __isleap(year) \ |
| ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0)) |
| #endif |
| |
| /* Compute the day of the week. */ |
| static void |
| day_of_the_week (struct tm *tm) |
| { |
| /* We know that January 1st 1970 was a Thursday (= 4). Compute the |
| the difference between this data in the one on TM and so determine |
| the weekday. */ |
| int corr_year = 1900 + tm->tm_year - (tm->tm_mon < 2); |
| int wday = (-473 |
| + (365 * (tm->tm_year - 70)) |
| + (corr_year / 4) |
| - ((corr_year / 4) / 25) + ((corr_year / 4) % 25 < 0) |
| + (((corr_year / 4) / 25) / 4) |
| + __mon_yday[0][tm->tm_mon] |
| + tm->tm_mday - 1); |
| tm->tm_wday = ((wday % 7) + 7) % 7; |
| } |
| |
| /* Compute the day of the year. */ |
| static void |
| day_of_the_year (struct tm *tm) |
| { |
| tm->tm_yday = (__mon_yday[__isleap (1900 + tm->tm_year)][tm->tm_mon] |
| + (tm->tm_mday - 1)); |
| } |
| |
| static char * |
| #ifdef _LIBC |
| internal_function |
| #endif |
| strptime_internal __P ((const char *rp, const char *fmt, struct tm *tm, |
| enum locale_status *decided, int era_cnt)); |
| |
| static char * |
| #ifdef _LIBC |
| internal_function |
| #endif |
| strptime_internal (rp, fmt, tm, decided, era_cnt) |
| const char *rp; |
| const char *fmt; |
| struct tm *tm; |
| enum locale_status *decided; |
| int era_cnt; |
| { |
| const char *rp_backup; |
| int cnt; |
| size_t val; |
| int have_I, is_pm; |
| int century, want_century; |
| int want_era; |
| int have_wday, want_xday; |
| int have_yday; |
| int have_mon, have_mday; |
| #ifdef _NL_CURRENT |
| size_t num_eras; |
| #endif |
| struct era_entry *era; |
| |
| have_I = is_pm = 0; |
| century = -1; |
| want_century = 0; |
| want_era = 0; |
| era = NULL; |
| |
| have_wday = want_xday = have_yday = have_mon = have_mday = 0; |
| |
| while (*fmt != '\0') |
| { |
| /* A white space in the format string matches 0 more or white |
| space in the input string. */ |
| if (isspace (*fmt)) |
| { |
| while (isspace (*rp)) |
| ++rp; |
| ++fmt; |
| continue; |
| } |
| |
| /* Any character but `%' must be matched by the same character |
| in the iput string. */ |
| if (*fmt != '%') |
| { |
| match_char (*fmt++, *rp++); |
| continue; |
| } |
| |
| ++fmt; |
| #ifndef _NL_CURRENT |
| /* We need this for handling the `E' modifier. */ |
| start_over: |
| #endif |
| |
| /* Make back up of current processing pointer. */ |
| rp_backup = rp; |
| |
| switch (*fmt++) |
| { |
| case '%': |
| /* Match the `%' character itself. */ |
| match_char ('%', *rp++); |
| break; |
| case 'a': |
| case 'A': |
| /* Match day of week. */ |
| for (cnt = 0; cnt < 7; ++cnt) |
| { |
| #ifdef _NL_CURRENT |
| if (*decided !=raw) |
| { |
| if (match_string (_NL_CURRENT (LC_TIME, DAY_1 + cnt), rp)) |
| { |
| if (*decided == not |
| && strcmp (_NL_CURRENT (LC_TIME, DAY_1 + cnt), |
| weekday_name[cnt])) |
| *decided = loc; |
| break; |
| } |
| if (match_string (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), rp)) |
| { |
| if (*decided == not |
| && strcmp (_NL_CURRENT (LC_TIME, ABDAY_1 + cnt), |
| ab_weekday_name[cnt])) |
| *decided = loc; |
| break; |
| } |
| } |
| #endif |
| if (*decided != loc |
| && (match_string (weekday_name[cnt], rp) |
| || match_string (ab_weekday_name[cnt], rp))) |
| { |
| *decided = raw; |
| break; |
| } |
| } |
| if (cnt == 7) |
| /* Does not match a weekday name. */ |
| return NULL; |
| tm->tm_wday = cnt; |
| have_wday = 1; |
| break; |
| case 'b': |
| case 'B': |
| case 'h': |
| /* Match month name. */ |
| for (cnt = 0; cnt < 12; ++cnt) |
| { |
| #ifdef _NL_CURRENT |
| if (*decided !=raw) |
| { |
| if (match_string (_NL_CURRENT (LC_TIME, MON_1 + cnt), rp)) |
| { |
| if (*decided == not |
| && strcmp (_NL_CURRENT (LC_TIME, MON_1 + cnt), |
| month_name[cnt])) |
| *decided = loc; |
| break; |
| } |
| if (match_string (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), rp)) |
| { |
| if (*decided == not |
| && strcmp (_NL_CURRENT (LC_TIME, ABMON_1 + cnt), |
| ab_month_name[cnt])) |
| *decided = loc; |
| break; |
| } |
| } |
| #endif |
| if (match_string (month_name[cnt], rp) |
| || match_string (ab_month_name[cnt], rp)) |
| { |
| *decided = raw; |
| break; |
| } |
| } |
| if (cnt == 12) |
| /* Does not match a month name. */ |
| return NULL; |
| tm->tm_mon = cnt; |
| want_xday = 1; |
| break; |
| case 'c': |
| /* Match locale's date and time format. */ |
| #ifdef _NL_CURRENT |
| if (*decided != raw) |
| { |
| if (!recursive (_NL_CURRENT (LC_TIME, D_T_FMT))) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (*decided == not && |
| strcmp (_NL_CURRENT (LC_TIME, D_T_FMT), HERE_D_T_FMT)) |
| *decided = loc; |
| want_xday = 1; |
| break; |
| } |
| *decided = raw; |
| } |
| #endif |
| if (!recursive (HERE_D_T_FMT)) |
| return NULL; |
| want_xday = 1; |
| break; |
| case 'C': |
| /* Match century number. */ |
| #ifdef _NL_CURRENT |
| match_century: |
| #endif |
| get_number (0, 99, 2); |
| century = val; |
| want_xday = 1; |
| break; |
| case 'd': |
| case 'e': |
| /* Match day of month. */ |
| get_number (1, 31, 2); |
| tm->tm_mday = val; |
| have_mday = 1; |
| want_xday = 1; |
| break; |
| case 'F': |
| if (!recursive ("%Y-%m-%d")) |
| return NULL; |
| want_xday = 1; |
| break; |
| case 'x': |
| #ifdef _NL_CURRENT |
| if (*decided != raw) |
| { |
| if (!recursive (_NL_CURRENT (LC_TIME, D_FMT))) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (*decided == not |
| && strcmp (_NL_CURRENT (LC_TIME, D_FMT), HERE_D_FMT)) |
| *decided = loc; |
| want_xday = 1; |
| break; |
| } |
| *decided = raw; |
| } |
| #endif |
| /* Fall through. */ |
| case 'D': |
| /* Match standard day format. */ |
| if (!recursive (HERE_D_FMT)) |
| return NULL; |
| want_xday = 1; |
| break; |
| case 'k': |
| case 'H': |
| /* Match hour in 24-hour clock. */ |
| get_number (0, 23, 2); |
| tm->tm_hour = val; |
| have_I = 0; |
| break; |
| case 'I': |
| /* Match hour in 12-hour clock. */ |
| get_number (1, 12, 2); |
| tm->tm_hour = val % 12; |
| have_I = 1; |
| break; |
| case 'j': |
| /* Match day number of year. */ |
| get_number (1, 366, 3); |
| tm->tm_yday = val - 1; |
| have_yday = 1; |
| break; |
| case 'm': |
| /* Match number of month. */ |
| get_number (1, 12, 2); |
| tm->tm_mon = val - 1; |
| have_mon = 1; |
| want_xday = 1; |
| break; |
| case 'M': |
| /* Match minute. */ |
| get_number (0, 59, 2); |
| tm->tm_min = val; |
| break; |
| case 'n': |
| case 't': |
| /* Match any white space. */ |
| while (isspace (*rp)) |
| ++rp; |
| break; |
| case 'p': |
| /* Match locale's equivalent of AM/PM. */ |
| #ifdef _NL_CURRENT |
| if (*decided != raw) |
| { |
| if (match_string (_NL_CURRENT (LC_TIME, AM_STR), rp)) |
| { |
| if (strcmp (_NL_CURRENT (LC_TIME, AM_STR), HERE_AM_STR)) |
| *decided = loc; |
| break; |
| } |
| if (match_string (_NL_CURRENT (LC_TIME, PM_STR), rp)) |
| { |
| if (strcmp (_NL_CURRENT (LC_TIME, PM_STR), HERE_PM_STR)) |
| *decided = loc; |
| is_pm = 1; |
| break; |
| } |
| *decided = raw; |
| } |
| #endif |
| if (!match_string (HERE_AM_STR, rp)) { |
| if (match_string (HERE_PM_STR, rp)) { |
| is_pm = 1; |
| } else { |
| return NULL; |
| } |
| } |
| break; |
| case 'r': |
| #ifdef _NL_CURRENT |
| if (*decided != raw) |
| { |
| if (!recursive (_NL_CURRENT (LC_TIME, T_FMT_AMPM))) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (*decided == not && |
| strcmp (_NL_CURRENT (LC_TIME, T_FMT_AMPM), |
| HERE_T_FMT_AMPM)) |
| *decided = loc; |
| break; |
| } |
| *decided = raw; |
| } |
| #endif |
| if (!recursive (HERE_T_FMT_AMPM)) |
| return NULL; |
| break; |
| case 'R': |
| if (!recursive ("%H:%M")) |
| return NULL; |
| break; |
| case 's': |
| { |
| /* The number of seconds may be very high so we cannot use |
| the `get_number' macro. Instead read the number |
| character for character and construct the result while |
| doing this. */ |
| time_t secs = 0; |
| if (*rp < '0' || *rp > '9') |
| /* We need at least one digit. */ |
| return NULL; |
| |
| do |
| { |
| secs *= 10; |
| secs += *rp++ - '0'; |
| } |
| while (*rp >= '0' && *rp <= '9'); |
| |
| if (localtime_r (&secs, tm) == NULL) |
| /* Error in function. */ |
| return NULL; |
| } |
| break; |
| case 'S': |
| get_number (0, 61, 2); |
| tm->tm_sec = val; |
| break; |
| case 'X': |
| #ifdef _NL_CURRENT |
| if (*decided != raw) |
| { |
| if (!recursive (_NL_CURRENT (LC_TIME, T_FMT))) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (strcmp (_NL_CURRENT (LC_TIME, T_FMT), HERE_T_FMT)) |
| *decided = loc; |
| break; |
| } |
| *decided = raw; |
| } |
| #endif |
| /* Fall through. */ |
| case 'T': |
| if (!recursive (HERE_T_FMT)) |
| return NULL; |
| break; |
| case 'u': |
| get_number (1, 7, 1); |
| tm->tm_wday = val % 7; |
| have_wday = 1; |
| break; |
| case 'g': |
| get_number (0, 99, 2); |
| /* XXX This cannot determine any field in TM. */ |
| break; |
| case 'G': |
| if (*rp < '0' || *rp > '9') |
| return NULL; |
| /* XXX Ignore the number since we would need some more |
| information to compute a real date. */ |
| do |
| ++rp; |
| while (*rp >= '0' && *rp <= '9'); |
| break; |
| case 'U': |
| case 'V': |
| case 'W': |
| get_number (0, 53, 2); |
| /* XXX This cannot determine any field in TM without some |
| information. */ |
| break; |
| case 'w': |
| /* Match number of weekday. */ |
| get_number (0, 6, 1); |
| tm->tm_wday = val; |
| have_wday = 1; |
| break; |
| case 'y': |
| #ifdef _NL_CURRENT |
| match_year_in_century: |
| #endif |
| /* Match year within century. */ |
| get_number (0, 99, 2); |
| /* The "Year 2000: The Millennium Rollover" paper suggests that |
| values in the range 69-99 refer to the twentieth century. */ |
| tm->tm_year = val >= 69 ? val : val + 100; |
| /* Indicate that we want to use the century, if specified. */ |
| want_century = 1; |
| want_xday = 1; |
| break; |
| case 'Y': |
| /* Match year including century number. */ |
| get_number (0, 9999, 4); |
| tm->tm_year = val - 1900; |
| want_century = 0; |
| want_xday = 1; |
| break; |
| case 'Z': |
| /* XXX How to handle this? */ |
| break; |
| case 'E': |
| #ifdef _NL_CURRENT |
| switch (*fmt++) |
| { |
| case 'c': |
| /* Match locale's alternate date and time format. */ |
| if (*decided != raw) |
| { |
| const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT); |
| |
| if (*fmt == '\0') |
| fmt = _NL_CURRENT (LC_TIME, D_T_FMT); |
| |
| if (!recursive (fmt)) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (strcmp (fmt, HERE_D_T_FMT)) |
| *decided = loc; |
| want_xday = 1; |
| break; |
| } |
| *decided = raw; |
| } |
| /* The C locale has no era information, so use the |
| normal representation. */ |
| if (!recursive (HERE_D_T_FMT)) |
| return NULL; |
| want_xday = 1; |
| break; |
| case 'C': |
| if (*decided != raw) |
| { |
| if (era_cnt >= 0) |
| { |
| era = _nl_select_era_entry (era_cnt); |
| if (match_string (era->era_name, rp)) |
| { |
| *decided = loc; |
| break; |
| } |
| else |
| return NULL; |
| } |
| else |
| { |
| num_eras = _NL_CURRENT_WORD (LC_TIME, |
| _NL_TIME_ERA_NUM_ENTRIES); |
| for (era_cnt = 0; era_cnt < (int) num_eras; |
| ++era_cnt, rp = rp_backup) |
| { |
| era = _nl_select_era_entry (era_cnt); |
| if (match_string (era->era_name, rp)) |
| { |
| *decided = loc; |
| break; |
| } |
| } |
| if (era_cnt == (int) num_eras) |
| { |
| era_cnt = -1; |
| if (*decided == loc) |
| return NULL; |
| } |
| else |
| break; |
| } |
| |
| *decided = raw; |
| } |
| /* The C locale has no era information, so use the |
| normal representation. */ |
| goto match_century; |
| case 'y': |
| if (*decided == raw) |
| goto match_year_in_century; |
| |
| get_number(0, 9999, 4); |
| tm->tm_year = val; |
| want_era = 1; |
| want_xday = 1; |
| break; |
| case 'Y': |
| if (*decided != raw) |
| { |
| num_eras = _NL_CURRENT_WORD (LC_TIME, |
| _NL_TIME_ERA_NUM_ENTRIES); |
| for (era_cnt = 0; era_cnt < (int) num_eras; |
| ++era_cnt, rp = rp_backup) |
| { |
| era = _nl_select_era_entry (era_cnt); |
| if (recursive (era->era_format)) |
| break; |
| } |
| if (era_cnt == (int) num_eras) |
| { |
| era_cnt = -1; |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| *decided = loc; |
| era_cnt = -1; |
| break; |
| } |
| |
| *decided = raw; |
| } |
| get_number (0, 9999, 4); |
| tm->tm_year = val - 1900; |
| want_century = 0; |
| want_xday = 1; |
| break; |
| case 'x': |
| if (*decided != raw) |
| { |
| const char *fmt = _NL_CURRENT (LC_TIME, ERA_D_FMT); |
| |
| if (*fmt == '\0') |
| fmt = _NL_CURRENT (LC_TIME, D_FMT); |
| |
| if (!recursive (fmt)) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (strcmp (fmt, HERE_D_FMT)) |
| *decided = loc; |
| break; |
| } |
| *decided = raw; |
| } |
| if (!recursive (HERE_D_FMT)) |
| return NULL; |
| break; |
| case 'X': |
| if (*decided != raw) |
| { |
| const char *fmt = _NL_CURRENT (LC_TIME, ERA_T_FMT); |
| |
| if (*fmt == '\0') |
| fmt = _NL_CURRENT (LC_TIME, T_FMT); |
| |
| if (!recursive (fmt)) |
| { |
| if (*decided == loc) |
| return NULL; |
| else |
| rp = rp_backup; |
| } |
| else |
| { |
| if (strcmp (fmt, HERE_T_FMT)) |
| *decided = loc; |
| break; |
| } |
| *decided = raw; |
| } |
| if (!recursive (HERE_T_FMT)) |
| return NULL; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| #else |
| /* We have no information about the era format. Just use |
| the normal format. */ |
| if (*fmt != 'c' && *fmt != 'C' && *fmt != 'y' && *fmt != 'Y' |
| && *fmt != 'x' && *fmt != 'X') |
| /* This is an illegal format. */ |
| return NULL; |
| |
| goto start_over; |
| #endif |
| case 'O': |
| switch (*fmt++) |
| { |
| case 'd': |
| case 'e': |
| /* Match day of month using alternate numeric symbols. */ |
| get_alt_number (1, 31, 2); |
| tm->tm_mday = val; |
| have_mday = 1; |
| want_xday = 1; |
| break; |
| case 'H': |
| /* Match hour in 24-hour clock using alternate numeric |
| symbols. */ |
| get_alt_number (0, 23, 2); |
| tm->tm_hour = val; |
| have_I = 0; |
| break; |
| case 'I': |
| /* Match hour in 12-hour clock using alternate numeric |
| symbols. */ |
| get_alt_number (1, 12, 2); |
| tm->tm_hour = val - 1; |
| have_I = 1; |
| break; |
| case 'm': |
| /* Match month using alternate numeric symbols. */ |
| get_alt_number (1, 12, 2); |
| tm->tm_mon = val - 1; |
| have_mon = 1; |
| want_xday = 1; |
| break; |
| case 'M': |
| /* Match minutes using alternate numeric symbols. */ |
| get_alt_number (0, 59, 2); |
| tm->tm_min = val; |
| break; |
| case 'S': |
| /* Match seconds using alternate numeric symbols. */ |
| get_alt_number (0, 61, 2); |
| tm->tm_sec = val; |
| break; |
| case 'U': |
| case 'V': |
| case 'W': |
| get_alt_number (0, 53, 2); |
| /* XXX This cannot determine any field in TM without |
| further information. */ |
| break; |
| case 'w': |
| /* Match number of weekday using alternate numeric symbols. */ |
| get_alt_number (0, 6, 1); |
| tm->tm_wday = val; |
| have_wday = 1; |
| break; |
| case 'y': |
| /* Match year within century using alternate numeric symbols. */ |
| get_alt_number (0, 99, 2); |
| tm->tm_year = val >= 69 ? val : val + 100; |
| want_xday = 1; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| default: |
| return NULL; |
| } |
| } |
| |
| if (have_I && is_pm) |
| tm->tm_hour += 12; |
| |
| if (century != -1) |
| { |
| if (want_century) |
| tm->tm_year = tm->tm_year % 100 + (century - 19) * 100; |
| else |
| /* Only the century, but not the year. Strange, but so be it. */ |
| tm->tm_year = (century - 19) * 100; |
| } |
| |
| #ifdef _NL_CURRENT |
| if (era_cnt != -1) |
| { |
| era = _nl_select_era_entry(era_cnt); |
| if (want_era) |
| tm->tm_year = (era->start_date[0] |
| + ((tm->tm_year - era->offset) |
| * era->absolute_direction)); |
| else |
| /* Era start year assumed. */ |
| tm->tm_year = era->start_date[0]; |
| } |
| else |
| #endif |
| if (want_era) |
| return NULL; |
| |
| if (want_xday && !have_wday) |
| { |
| if ( !(have_mon && have_mday) && have_yday) |
| { |
| /* We don't have tm_mon and/or tm_mday, compute them. */ |
| int t_mon = 0; |
| while (__mon_yday[__isleap(1900 + tm->tm_year)][t_mon] <= tm->tm_yday) |
| t_mon++; |
| if (!have_mon) |
| tm->tm_mon = t_mon - 1; |
| if (!have_mday) |
| tm->tm_mday = |
| (tm->tm_yday |
| - __mon_yday[__isleap(1900 + tm->tm_year)][t_mon - 1] + 1); |
| } |
| day_of_the_week (tm); |
| } |
| if (want_xday && !have_yday) |
| day_of_the_year (tm); |
| |
| return discard_const_p(char, rp); |
| } |
| |
| |
| char *rep_strptime(const char *buf, const char *format, struct tm *tm) |
| { |
| enum locale_status decided; |
| |
| #ifdef _NL_CURRENT |
| decided = not; |
| #else |
| decided = raw; |
| #endif |
| return strptime_internal (buf, format, tm, &decided, -1); |
| } |
