| /* Copyright (C) 2002, 2004-2005, 2007, 2009-2026 Free Software Foundation, | |
| Inc. | |
| This file is part of the GNU C Library. | |
| This file 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 2.1 of the | |
| License, or (at your option) any later version. | |
| This file 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 Lesser General Public License for more details. | |
| You should have received a copy of the GNU Lesser General Public License | |
| along with this program. If not, see <https://www.gnu.org/licenses/>. */ | |
| #ifndef _LIBC | |
| # include <config.h> | |
| #endif | |
| #include <time.h> | |
| #include <assert.h> | |
| #include <ctype.h> | |
| #ifdef _LIBC | |
| # include <langinfo.h> | |
| #endif | |
| #include <limits.h> | |
| #include <string.h> | |
| #include <strings.h> | |
| #ifdef _LIBC | |
| # include <stdbool.h> | |
| # include "../locale/localeinfo.h" | |
| #endif | |
| #ifndef _LIBC | |
| enum ptime_locale_status { not, loc, raw }; | |
| #endif | |
| #define match_char(ch1, ch2) if (ch1 != ch2) return NULL | |
| #if defined _LIBC && defined __GNUC__ && __GNUC__ >= 2 | |
| # define match_string(cs1, s2) \ | |
| ({ size_t len = strlen (cs1); \ | |
| int result = __strncasecmp_l ((cs1), (s2), len, locale) == 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) \ | |
| { \ | |
| val = _nl_parse_alt_digit (&rp HELPER_LOCALE_ARG); \ | |
| if (val == -1 && *decided != loc) \ | |
| { \ | |
| *decided = loc; \ | |
| goto do_normal; \ | |
| } \ | |
| 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 LOCALE_ARG)) != NULL) | |
| #ifdef _LIBC | |
| /* This is defined in locale/C-time.c in the GNU libc. */ | |
| extern const struct locale_data _nl_C_LC_TIME attribute_hidden; | |
| # 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 | |
| #if defined _LIBC | |
| /* We use this code also for the extended locale handling where the | |
| function gets as an additional argument the locale which has to be | |
| used. To access the values we have to redefine the _NL_CURRENT | |
| macro. */ | |
| # define strptime __strptime_l | |
| # undef _NL_CURRENT | |
| # define _NL_CURRENT(category, item) \ | |
| (current->values[_NL_ITEM_INDEX (item)].string) | |
| # undef _NL_CURRENT_WORD | |
| # define _NL_CURRENT_WORD(category, item) \ | |
| (current->values[_NL_ITEM_INDEX (item)].word) | |
| # define LOCALE_PARAM , __locale_t locale | |
| # define LOCALE_ARG , locale | |
| # define HELPER_LOCALE_ARG , current | |
| # define ISSPACE(Ch) __isspace_l (Ch, locale) | |
| #else | |
| # define LOCALE_PARAM | |
| # define LOCALE_ARG | |
| # define HELPER_LOCALE_ARG | |
| # define ISSPACE(Ch) isspace (Ch) | |
| #endif | |
| #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 | |
| 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 corr_quad = corr_year / 4; | |
| int wday = (-473 | |
| + (365 * (tm->tm_year - 70)) | |
| + corr_quad | |
| - ((corr_quad + (corr_quad < 0)) / 25 - (corr_quad < 0)) | |
| + ((corr_quad / 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)); | |
| } | |
| #ifdef _LIBC | |
| char * | |
| internal_function | |
| #else | |
| static char * | |
| #endif | |
| __strptime_internal (const char *rp, const char *fmt, struct tm *tm, | |
| enum ptime_locale_status *decided, | |
| int era_cnt LOCALE_PARAM) | |
| { | |
| #ifdef _LIBC | |
| struct locale_data *const current = locale->__locales[LC_TIME]; | |
| #endif | |
| 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; | |
| int have_uweek, have_wweek; | |
| int week_no; | |
| #ifdef _NL_CURRENT | |
| size_t num_eras; | |
| struct era_entry *era = NULL; | |
| const char *rp_backup; | |
| #endif | |
| have_I = is_pm = 0; | |
| century = -1; | |
| want_century = 0; | |
| want_era = 0; | |
| week_no = 0; | |
| have_wday = want_xday = have_yday = have_mon = have_mday = have_uweek = 0; | |
| have_wweek = 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 input string. */ | |
| if (*fmt != '%') | |
| { | |
| match_char (*fmt++, *rp++); | |
| continue; | |
| } | |
| ++fmt; | |
| #ifndef _NL_CURRENT | |
| /* We need this for handling the 'E' modifier. */ | |
| start_over: | |
| #else | |
| /* Make back up of current processing pointer. */ | |
| rp_backup = rp; | |
| #endif | |
| switch (*fmt++) | |
| { | |
| case '%': | |
| /* Match the '%' character itself. */ | |
| match_char ('%', *rp++); | |
| break; | |
| case 'a': | |
| case 'A': | |
| /* Match day of week. */ | |
| { | |
| int cnt; | |
| 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. */ | |
| { | |
| int cnt; | |
| 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 'l': | |
| /* Match hour in 12-hour clock. GNU extension. */ | |
| 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 'q': | |
| /* Match quarter of year. GNU extension. */ | |
| get_number (1, 4, 1); | |
| tm->tm_mon = (val - 1) * 3; | |
| tm->tm_mday = 1; | |
| have_mon = 1; | |
| have_mday = 1; | |
| want_xday = 1; | |
| 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': | |
| get_number (0, 53, 2); | |
| week_no = val; | |
| have_uweek = 1; | |
| break; | |
| case 'W': | |
| get_number (0, 53, 2); | |
| week_no = val; | |
| have_wweek = 1; | |
| break; | |
| case 'V': | |
| 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 'z': | |
| /* We recognize two formats: if two digits are given, these | |
| specify hours. If fours digits are used, minutes are | |
| also specified. */ | |
| { | |
| _GL_UNUSED bool neg; | |
| int n; | |
| val = 0; | |
| while (*rp == ' ') | |
| ++rp; | |
| if (*rp != '+' && *rp != '-') | |
| return NULL; | |
| neg = *rp++ == '-'; | |
| n = 0; | |
| while (n < 4 && *rp >= '0' && *rp <= '9') | |
| { | |
| val = val * 10 + *rp++ - '0'; | |
| ++n; | |
| } | |
| if (n == 2) | |
| val *= 100; | |
| else if (n != 4) | |
| /* Only two or four digits recognized. */ | |
| return NULL; | |
| else | |
| { | |
| /* We have to convert the minutes into decimal. */ | |
| if (val % 100 >= 60) | |
| return NULL; | |
| val = (val / 100) * 100 + ((val % 100) * 50) / 30; | |
| } | |
| if (val > 1200) | |
| return NULL; | |
| #if defined _LIBC || HAVE_STRUCT_TM_TM_GMTOFF | |
| tm->tm_gmtoff = (val * 3600) / 100; | |
| if (neg) | |
| tm->tm_gmtoff = -tm->tm_gmtoff; | |
| #endif | |
| } | |
| 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 HELPER_LOCALE_ARG); | |
| if (era != NULL && match_string (era->era_name, rp)) | |
| { | |
| *decided = loc; | |
| break; | |
| } | |
| else | |
| return NULL; | |
| } | |
| 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 | |
| HELPER_LOCALE_ARG); | |
| if (era != NULL && match_string (era->era_name, rp)) | |
| { | |
| *decided = loc; | |
| break; | |
| } | |
| } | |
| if (era_cnt != (int) num_eras) | |
| break; | |
| era_cnt = -1; | |
| if (*decided == loc) | |
| return NULL; | |
| *decided = raw; | |
| } | |
| /* The C locale has no era information, so use the | |
| normal representation. */ | |
| goto match_century; | |
| case 'y': | |
| if (*decided != raw) | |
| { | |
| get_number(0, 9999, 4); | |
| tm->tm_year = val; | |
| want_era = 1; | |
| want_xday = 1; | |
| want_century = 1; | |
| if (era_cnt >= 0) | |
| { | |
| assert (*decided == loc); | |
| era = _nl_select_era_entry (era_cnt HELPER_LOCALE_ARG); | |
| bool match = false; | |
| if (era != NULL) | |
| { | |
| int delta = ((tm->tm_year - era->offset) | |
| * era->absolute_direction); | |
| match = (delta >= 0 | |
| && delta < (((int64_t) era->stop_date[0] | |
| - (int64_t) era->start_date[0]) | |
| * era->absolute_direction)); | |
| } | |
| if (! match) | |
| return NULL; | |
| break; | |
| } | |
| num_eras = _NL_CURRENT_WORD (LC_TIME, | |
| _NL_TIME_ERA_NUM_ENTRIES); | |
| for (era_cnt = 0; era_cnt < (int) num_eras; ++era_cnt) | |
| { | |
| era = _nl_select_era_entry (era_cnt | |
| HELPER_LOCALE_ARG); | |
| if (era != NULL) | |
| { | |
| int delta = ((tm->tm_year - era->offset) | |
| * era->absolute_direction); | |
| if (delta >= 0 | |
| && delta < (((int64_t) era->stop_date[0] | |
| - (int64_t) era->start_date[0]) | |
| * era->absolute_direction)) | |
| { | |
| *decided = loc; | |
| break; | |
| } | |
| } | |
| } | |
| if (era_cnt != (int) num_eras) | |
| break; | |
| era_cnt = -1; | |
| if (*decided == loc) | |
| return NULL; | |
| *decided = raw; | |
| } | |
| goto match_year_in_century; | |
| 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 HELPER_LOCALE_ARG); | |
| if (era != NULL && 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 % 12; | |
| 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 'q': | |
| /* Match quarter using alternate numeric symbols. */ | |
| get_alt_number (1, 4, 1); | |
| tm->tm_mon = (val - 1) * 3; | |
| tm->tm_mday = 1; | |
| have_mon = 1; | |
| have_mday = 1; | |
| want_xday = 1; | |
| break; | |
| case 'S': | |
| /* Match seconds using alternate numeric symbols. */ | |
| get_alt_number (0, 61, 2); | |
| tm->tm_sec = val; | |
| break; | |
| case 'U': | |
| get_alt_number (0, 53, 2); | |
| week_no = val; | |
| have_uweek = 1; | |
| break; | |
| case 'W': | |
| get_alt_number (0, 53, 2); | |
| week_no = val; | |
| have_wweek = 1; | |
| break; | |
| case 'V': | |
| 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; | |
| } | |
| if (era_cnt != -1) | |
| { | |
| #ifdef _NL_CURRENT | |
| era = _nl_select_era_entry (era_cnt HELPER_LOCALE_ARG); | |
| if (era == NULL) | |
| return NULL; | |
| 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]; | |
| #endif | |
| } | |
| else | |
| if (want_era) | |
| { | |
| /* No era found but we have seen an E modifier. Rectify some | |
| values. */ | |
| if (want_century && century == -1 && tm->tm_year < 69) | |
| tm->tm_year += 100; | |
| } | |
| 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); | |
| if ((have_uweek || have_wweek) && have_wday) | |
| { | |
| int saved_wday = tm->tm_wday; | |
| int saved_mday = tm->tm_mday; | |
| int saved_mon = tm->tm_mon; | |
| int w_offset = have_uweek ? 0 : 1; | |
| tm->tm_mday = 1; | |
| tm->tm_mon = 0; | |
| day_of_the_week (tm); | |
| if (have_mday) | |
| tm->tm_mday = saved_mday; | |
| if (have_mon) | |
| tm->tm_mon = saved_mon; | |
| if (!have_yday) | |
| tm->tm_yday = ((7 - (tm->tm_wday - w_offset)) % 7 | |
| + (week_no - 1) *7 | |
| + saved_wday - w_offset); | |
| if (!have_mday || !have_mon) | |
| { | |
| 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); | |
| } | |
| tm->tm_wday = saved_wday; | |
| } | |
| return (char *) rp; | |
| } | |
| char * | |
| strptime (const char *restrict buf, const char *restrict format, | |
| struct tm *restrict tm LOCALE_PARAM) | |
| { | |
| enum ptime_locale_status decided; | |
| #ifdef _NL_CURRENT | |
| decided = not; | |
| #else | |
| decided = raw; | |
| #endif | |
| return __strptime_internal (buf, format, tm, &decided, -1 LOCALE_ARG); | |
| } | |
| #ifdef _LIBC | |
| weak_alias (__strptime_l, strptime_l) | |
| #endif |