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/* Copyright (C) 2002 Manuel Novoa III * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This 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 Library General Public * License along with this library; if not, write to the Free * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ /* ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! * * Besides uClibc, I'm using this code in my libc for elks, which is * a 16-bit environment with a fairly limited compiler. It would make * things much easier for me if this file isn't modified unnecessarily. * In particular, please put any new or replacement functions somewhere * else, and modify the makefile to use your version instead. * Thanks. Manuel * * ATTENTION! ATTENTION! ATTENTION! ATTENTION! ATTENTION! */ /* June 15, 2002 Initial Notes: * * Note: It is assumed throught that time_t is either long or unsigned long. * Similarly, clock_t is assumed to be long int. * * Warning: Assumptions are made about the layout of struct tm! It is * assumed that the initial fields of struct tm are (in order): * tm_sec, tm_min, tm_hour, tm_mday, tm_mon, tm_year, tm_wday, tm_yday * * Reached the inital goal of supporting the ANSI/ISO C99 time functions * as well as SUSv3's strptime. All timezone info is obtained from the * TZ env variable. * * Differences from glibc worth noting: * * Leap seconds are not considered here. * * glibc stores additional timezone info the struct tm, whereas we don't. * * Alternate digits and era handling are not currently implemented. * The modifiers are accepted, and tested for validity with the following * specifier, but are ignored otherwise. * * strftime does not implement glibc extension modifiers or widths for * conversion specifiers. However it does implement the glibc * extension specifiers %l, %k, and %s. It also recognizes %P, but * treats it as a synonym for %p; i.e. doesn't convert to lower case. * * strptime implements the glibc extension specifiers. However, it follows * SUSv3 in requiring at least one non-alphanumeric char between * conversion specifiers. Also, strptime only sets struct tm fields * for which format specifiers appear and does not try to infer other * fields (such as wday) as glibc's version does. * * TODO - Since glibc's %l and %k can space-pad their output in strftime, * it might be reasonable to eat whitespace first for those specifiers. * This could be done by pushing " %I" and " %H" respectively so that * leading whitespace is consumed. This is really only an issue if %l * or %k occurs at the start of the format string. * * TODO - Implement getdate? tzfile? struct tm extensions? * * TODO - Rework _time_mktime to remove the dependency on long long. */ /* Oct 28, 2002 * * Fixed allowed char check for std and dst TZ fields. * * Added several options concerned with timezone support. The names will * probably change once Erik gets the new config system in place. * * Defining __TIME_TZ_FILE causes tzset() to attempt to read the TZ value * from the file /etc/TZ if the TZ env variable isn't set. The file contents * must be the intended value of TZ, followed by a newline. No other chars, * spacing, etc is allowed. As an example, an easy way for me to init * /etc/TZ appropriately would be: echo CST6CDT > /etc/TZ * * Defining __TIME_TZ_FILE_ONCE will cause all further accesses of /etc/TZ * to be skipped once a legal value has been read. * * Defining __TIME_TZ_OPT_SPEED will cause a tzset() to keep a copy of the * last TZ setting string and do a "fast out" if the current string is the * same. * * Nov 21, 2002 Fix an error return case in _time_mktime. * * Nov 26, 2002 Fix bug in setting daylight and timezone when no (valid) TZ. * Bug reported by Arne Bernin <arne@alamut.de> in regards to freeswan. * * July 27, 2003 Adjust the struct tm extension field support. * Change __tm_zone back to a ptr and add the __tm_tzname[] buffer for * __tm_zone to point to. This gets around complaints from g++. * Who knows... it might even fix the PPC timezone init problem. * * July 29, 2003 Fix a bug in mktime behavior when tm_isdst was -1. * Bug reported by "Sid Wade" <sid@vivato.net> in regards to busybox. * * NOTE: uClibc mktime behavior is different than glibc's when * the struct tm has tm_isdst == -1 and also had fields outside of * the normal ranges. * * Apparently, glibc examines (at least) tm_sec and guesses the app's * intention of assuming increasing or decreasing time when entering an * ambiguous time period at the dst<->st boundaries. * * The uClibc behavior is to always normalize the struct tm and then * try to determing the dst setting. * * As long as tm_isdst != -1 or the time specifiec by struct tm is * unambiguous (not falling in the dst<->st transition region) both * uClibc and glibc should produce the same result for mktime. * * Oct 31, 2003 Kill the seperate __tm_zone and __tm_tzname[] and which * doesn't work if you want the memcpy the struct. Sigh... I didn't * think about that. So now, when the extensions are enabled, we * malloc space when necessary and keep the timezone names in a linked * list. * * Fix a dst-related bug which resulted in use of uninitialized data. * * Nov 15, 2003 I forgot to update the thread locking in the last dst fix. * * Dec 14, 2003 Fix some dst issues in _time_mktime(). * Normalize the tm_isdst value to -1, 0, or 1. * If no dst for this timezone, then reset tm_isdst to 0. */ #define _GNU_SOURCE #define _STDIO_UTILITY #include <stdio.h> #include <stdlib.h> #include <stddef.h> #include <string.h> #include <time.h> #include <limits.h> #include <assert.h> #include <errno.h> #include <ctype.h> #include <langinfo.h> #include <locale.h> #ifdef __UCLIBC_HAS_XLOCALE__ #include <xlocale.h> #endif #ifndef __isleap #define __isleap(y) ( !((y) % 4) && ( ((y) % 100) || !((y) % 400) ) ) #endif #ifndef TZNAME_MAX #define TZNAME_MAX _POSIX_TZNAME_MAX #endif /**********************************************************************/ /* The era code is currently unfinished. */ /* #define ENABLE_ERA_CODE */ #define TZ_BUFLEN (2*TZNAME_MAX + 56) #ifdef __UCLIBC_HAS_TZ_FILE__ #include <sys/stat.h> #include <fcntl.h> #include <unistd.h> #include "paths.h" /* ":<tzname>+hh:mm:ss<tzname>+hh:mm:ss,Mmm.w.d/hh:mm:ss,Mmm.w.d/hh:mm:ss" + nul */ /* 1 + 2*(1+TZNAME_MAX+1 + 9 + 7 + 9) + 1 = 2*TZNAME_MAX + 56 */ #else /* __UCLIBC_HAS_TZ_FILE__ */ /* Probably no longer needed. */ #undef __UCLIBC_HAS_TZ_FILE_READ_MANY__ #endif /* __UCLIBC_HAS_TZ_FILE__ */ /**********************************************************************/ extern struct tm __time_tm; typedef struct { long gmt_offset; long dst_offset; short day; /* for J or normal */ short week; short month; short rule_type; /* J, M, \0 */ char tzname[TZNAME_MAX+1]; } rule_struct; #ifdef __UCLIBC_HAS_THREADS__ #include <pthread.h> extern pthread_mutex_t _time_tzlock; #define TZLOCK __pthread_mutex_lock(&_time_tzlock) #define TZUNLOCK __pthread_mutex_unlock(&_time_tzlock) #else #define TZLOCK ((void) 0) #define TZUNLOCK ((void) 0) #endif extern rule_struct _time_tzinfo[2]; extern struct tm *_time_t2tm(const time_t *__restrict timer, int offset, struct tm *__restrict result); extern time_t _time_mktime(struct tm *timeptr, int store_on_success); /**********************************************************************/ #ifdef L_asctime static char __time_str[26]; char *asctime(const struct tm *__restrict ptm) { return asctime_r(ptm, __time_str); } #endif /**********************************************************************/ #ifdef L_asctime_r /* Strictly speaking, this implementation isn't correct. ANSI/ISO specifies * that the implementation of asctime() be equivalent to * * char *asctime(const struct tm *timeptr) * { * static char wday_name[7][3] = { * "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" * }; * static char mon_name[12][3] = { * "Jan", "Feb", "Mar", "Apr", "May", "Jun", * "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" * }; * static char result[26]; * * sprintf(result, "%.3s %.3s%3d %.2d:%.2d:%.2d %d\n", * wday_name[timeptr->tm_wday], * mon_name[timeptr->tm_mon], * timeptr->tm_mday, timeptr->tm_hour, * timeptr->tm_min, timeptr->tm_sec, * 1900 + timeptr->tm_year); * return result; * } * * but the above is either inherently unsafe, or carries with it the implicit * assumption that all fields of timeptr fall within their usual ranges, and * that the tm_year value falls in the range [-2899,8099] to avoid overflowing * the static buffer. * * If we take the implicit assumption as given, then the implementation below * is still incorrect for tm_year values < -900, as there will be either * 0-padding and/or a missing negative sign for the year conversion . But given * the ususal use of asctime(), I think it isn't unreasonable to restrict correct * operation to the domain of years between 1000 and 9999. */ /* This is generally a good thing, but if you're _sure_ any data passed will be * in range, you can #undef this. */ #define SAFE_ASCTIME_R 1 static const unsigned char at_data[] = { 'S', 'u', 'n', 'M', 'o', 'n', 'T', 'u', 'e', 'W', 'e', 'd', 'T', 'h', 'u', 'F', 'r', 'i', 'S', 'a', 't', 'J', 'a', 'n', 'F', 'e', 'b', 'M', 'a', 'r', 'A', 'p', 'r', 'M', 'a', 'y', 'J', 'u', 'n', 'J', 'u', 'l', 'A', 'u', 'g', 'S', 'e', 'p', 'O', 'c', 't', 'N', 'o', 'v', 'D', 'e', 'c', #ifdef SAFE_ASCTIME_R '?', '?', '?', #endif ' ', '?', '?', '?', ' ', '0', offsetof(struct tm, tm_mday), ' ', '0', offsetof(struct tm, tm_hour), ':', '0', offsetof(struct tm, tm_min), ':', '0', offsetof(struct tm, tm_sec), ' ', '?', '?', '?', '?', '\n', 0 }; char *asctime_r(register const struct tm *__restrict ptm, register char *__restrict buffer) { int tmp; assert(ptm); assert(buffer); #ifdef SAFE_ASCTIME_R memcpy(buffer, at_data + 3*(7 + 12), sizeof(at_data) - 3*(7 + 12)); if (((unsigned int)(ptm->tm_wday)) <= 6) { memcpy(buffer, at_data + 3 * ptm->tm_wday, 3); } if (((unsigned int)(ptm->tm_mon)) <= 11) { memcpy(buffer + 4, at_data + 3*7 + 3 * ptm->tm_mon, 3); } #else assert(((unsigned int)(ptm->tm_wday)) <= 6); assert(((unsigned int)(ptm->tm_mon)) <= 11); memcpy(buffer, at_data + 3*(7 + 12) - 3, sizeof(at_data) + 3 - 3*(7 + 12)); memcpy(buffer, at_data + 3 * ptm->tm_wday, 3); memcpy(buffer + 4, at_data + 3*7 + 3 * ptm->tm_mon, 3); #endif #ifdef SAFE_ASCTIME_R buffer += 19; tmp = ptm->tm_year + 1900; if (((unsigned int) tmp) < 10000) { buffer += 4; do { *buffer = '0' + (tmp % 10); tmp /= 10; } while (*--buffer == '?'); } #else /* SAFE_ASCTIME_R */ buffer += 23; tmp = ptm->tm_year + 1900; assert( ((unsigned int) tmp) < 10000 ); do { *buffer = '0' + (tmp % 10); tmp /= 10; } while (*--buffer == '?'); #endif /* SAFE_ASCTIME_R */ do { --buffer; tmp = *((int *)(((const char *) ptm) + (int) *buffer)); #ifdef SAFE_ASCTIME_R if (((unsigned int) tmp) >= 100) { /* Just check 2 digit non-neg. */ buffer[-1] = *buffer = '?'; } else #else /* SAFE_ASCTIME_R */ assert(((unsigned int) tmp) < 100); /* Just check 2 digit non-neg. */ #endif /* SAFE_ASCTIME_R */ { *buffer = '0' + (tmp % 10); #ifdef __BCC__ buffer[-1] = '0' + (tmp/10); #else /* __BCC__ */ buffer[-1] += (tmp/10); #endif /* __BCC__ */ } } while ((buffer -= 2)[-2] == '0'); if (*++buffer == '0') { /* Space-pad day of month. */ *buffer = ' '; } return buffer - 8; } #endif /**********************************************************************/ #ifdef L_clock #include <sys/times.h> /* Note: According to glibc... * CAE XSH, Issue 4, Version 2: <time.h> * The value of CLOCKS_PER_SEC is required to be 1 million on all * XSI-conformant systems. */ #ifndef __BCC__ #if CLOCKS_PER_SEC != 1000000L #error unexpected value for CLOCKS_PER_SEC! #endif #endif clock_t clock(void) { struct tms xtms; unsigned long t; times(&xtms); t = ((unsigned long) xtms.tms_utime) + xtms.tms_stime; #ifndef __UCLIBC_CLK_TCK_CONST #error __UCLIBC_CLK_TCK_CONST not defined! #endif #undef CLK_TCK #define CLK_TCK __UCLIBC_CLK_TCK_CONST #if CLK_TCK > CLOCKS_PER_SEC #error __UCLIBC_CLK_TCK_CONST > CLOCKS_PER_SEC! #elif CLK_TCK < 1 #error __UCLIBC_CLK_TCK_CONST < 1! #endif #if (CLK_TCK == CLOCKS_PER_SEC) return (t <= LONG_MAX) ? t : -1; #elif (CLOCKS_PER_SEC % CLK_TCK) == 0 return (t <= (LONG_MAX / (CLOCKS_PER_SEC/CLK_TCK))) ? t * (CLOCKS_PER_SEC/CLK_TCK) : -1; #else return (t <= ((LONG_MAX / CLOCKS_PER_SEC) * CLK_TCK + ((LONG_MAX % CLOCKS_PER_SEC) * CLK_TCK) / CLOCKS_PER_SEC)) ? (((t / CLK_TCK) * CLOCKS_PER_SEC) + (((t % CLK_TCK) * CLOCKS_PER_SEC) / CLK_TCK)) : -1; #endif } #endif /**********************************************************************/ #ifdef L_ctime char *ctime(const time_t *clock) { /* ANSI/ISO/SUSv3 say that ctime is equivalent to the following. */ return asctime(localtime(clock)); } #endif /**********************************************************************/ #ifdef L_ctime_r char *ctime_r(const time_t *clock, char *buf) { struct tm xtm; return asctime_r(localtime_r(clock, &xtm), buf); } #endif /**********************************************************************/ #ifdef L_difftime #include <float.h> #if FLT_RADIX != 2 #error difftime implementation assumptions violated for you arch! #endif double difftime(time_t time1, time_t time0) { #if (LONG_MAX >> DBL_MANT_DIG) == 0 /* time_t fits in the mantissa of a double. */ return ((double) time1) - time0; #elif ((LONG_MAX >> DBL_MANT_DIG) >> DBL_MANT_DIG) == 0 /* time_t can overflow the mantissa of a double. */ time_t t1, t0, d; d = ((time_t) 1) << DBL_MANT_DIG; t1 = time1 / d; time1 -= (t1 * d); t0 = time0 / d; time0 -= (t0*d); /* Since FLT_RADIX==2 and d is a power of 2, the only possible * rounding error in the expression below would occur from the * addition. */ return (((double) t1) - t0) * d + (((double) time1) - time0); #else #error difftime needs special implementation on your arch. #endif } #endif /**********************************************************************/ #ifdef L_gmtime struct tm *gmtime(const time_t *timer) { register struct tm *ptm = &__time_tm; _time_t2tm(timer, 0, ptm); /* Can return NULL... */ return ptm; } #endif /**********************************************************************/ #ifdef L_gmtime_r struct tm *gmtime_r(const time_t *__restrict timer, struct tm *__restrict result) { return _time_t2tm(timer, 0, result); } #endif /**********************************************************************/ #ifdef L_localtime struct tm *localtime(const time_t *timer) { register struct tm *ptm = &__time_tm; /* In this implementation, tzset() is called by localtime_r(). */ localtime_r(timer, ptm); /* Can return NULL... */ return ptm; } #endif /**********************************************************************/ #ifdef L_localtime_r #ifdef __UCLIBC_HAS_TM_EXTENSIONS__ struct ll_tzname_item; typedef struct ll_tzname_item { struct ll_tzname_item *next; char tzname[TZNAME_MAX+1]; } ll_tzname_item_t; static ll_tzname_item_t ll_tzname[] = { { ll_tzname + 1, "UTC" }, /* Always 1st. */ { NULL, "???" } /* Always 2nd. (invalid or out-of-memory) */ }; const char *lookup_tzname(const char *key) { ll_tzname_item_t *p; for (p=ll_tzname ; p ; p=p->next) { if (!strcmp(p->tzname, key)) { return p->tzname; } } /* Hmm... a new name. */ if (strnlen(key, TZNAME_MAX+1) < TZNAME_MAX+1) { /* Verify legal length */ if ((p = malloc(sizeof(ll_tzname_item_t))) != NULL) { /* Insert as 3rd item in the list. */ p->next = ll_tzname[1].next; ll_tzname[1].next = p; strcpy(p->tzname, key); return p->tzname; } } /* Either invalid or couldn't alloc. */ return ll_tzname[1].tzname; } #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */ static const unsigned char day_cor[] = { /* non-leap */ 31, 31, 34, 34, 35, 35, 36, 36, 36, 37, 37, 38, 38 /* 0, 0, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7 */ /* 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 */ }; /* Note: timezone locking is done by localtime_r. */ static int tm_isdst(register const struct tm *__restrict ptm) { register rule_struct *r = _time_tzinfo; long sec; int i, isdst, isleap, day, day0, monlen, mday; int oday; /* Note: oday can be uninitialized. */ isdst = 0; if (r[1].tzname[0] != 0) { /* First, get the current seconds offset from the start of the year. * Fields of ptm are assumed to be in their normal ranges. */ sec = ptm->tm_sec + 60 * (ptm->tm_min + 60 * (long)(ptm->tm_hour + 24 * ptm->tm_yday)); /* Do some prep work. */ i = (ptm->tm_year % 400) + 1900; /* Make sure we don't overflow. */ isleap = __isleap(i); --i; day0 = (1 + i /* Normal years increment 1 wday. */ + (i/4) - (i/100) + (i/400) ) % 7; i = 0; do { day = r->day; /* Common for 'J' and # case. */ if (r->rule_type == 'J') { if (!isleap || (day < (31+29))) { --day; } } else if (r->rule_type == 'M') { /* Find 0-based day number for 1st of the month. */ day = 31*r->month - day_cor[r->month -1]; if (isleap && (day >= 59)) { ++day; } monlen = 31 + day_cor[r->month -1] - day_cor[r->month]; if (isleap && (r->month > 1)) { ++monlen; } /* Wweekday (0 is Sunday) of 1st of the month * is (day0 + day) % 7. */ if ((mday = r->day - ((day0 + day) % 7)) >= 0) { mday -= 7; /* Back up into prev month since r->week>0. */ } if ((mday += 7 * r->week) >= monlen) { mday -= 7; } /* So, 0-based day number is... */ day += mday; } if (i != 0) { /* Adjust sec since dst->std change time is in dst. */ sec += (r[-1].gmt_offset - r->gmt_offset); if (oday > day) { ++isdst; /* Year starts in dst. */ } } oday = day; /* Now convert day to seconds and add offset and compare. */ if (sec >= (day * 86400L) + r->dst_offset) { ++isdst; } ++r; } while (++i < 2); } return (isdst & 1); } struct tm *localtime_r(register const time_t *__restrict timer, register struct tm *__restrict result) { time_t x[1]; long offset; int days, dst; TZLOCK; tzset(); dst = 0; do { days = -7; offset = 604800L - _time_tzinfo[dst].gmt_offset; if (*timer > (LONG_MAX - 604800L)) { days = -days; offset = -offset; } *x = *timer + offset; _time_t2tm(x, days, result); result->tm_isdst = dst; #ifdef __UCLIBC_HAS_TM_EXTENSIONS__ result->tm_gmtoff = - _time_tzinfo[dst].gmt_offset; result->tm_zone = lookup_tzname(_time_tzinfo[dst].tzname); #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */ } while ((++dst < 2) && ((result->tm_isdst = tm_isdst(result)) != 0)); TZUNLOCK; return result; } #endif /**********************************************************************/ #ifdef L_mktime /* Another name for `mktime'. */ /* time_t timelocal(struct tm *tp) */ weak_alias(mktime,timelocal); time_t mktime(struct tm *timeptr) { return _time_mktime(timeptr, 1); } #endif /**********************************************************************/ #if defined(L_strftime) || defined(L_strftime_l) #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) size_t strftime(char *__restrict s, size_t maxsize, const char *__restrict format, const struct tm *__restrict timeptr) { return __strftime_l(s, maxsize, format, timeptr, __UCLIBC_CURLOCALE); } #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */ #define NO_E_MOD 0x80 #define NO_O_MOD 0x40 #define ILLEGAL_SPEC 0x3f #define INT_SPEC 0x00 /* must be 0x00!! */ #define STRING_SPEC 0x10 /* must be 0x10!! */ #define CALC_SPEC 0x20 #define STACKED_SPEC 0x30 #define MASK_SPEC 0x30 /* Compatibility: * * No alternate digit (%O?) handling. Always uses 0-9. * Alternate locale format (%E?) handling is broken for nontrivial ERAs. * glibc's %P is currently faked by %p. This means it doesn't do lower case. * glibc's %k, %l, and %s are handled. * glibc apparently allows (and ignores) extraneous 'E' and 'O' modifiers, * while they are flagged as illegal conversions here. */ /* Warning: Assumes ASCII values! (as do lots of other things in the lib...) */ static const unsigned char spec[] = { /* A */ 0x03 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* B */ 0x04 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* C */ 0x0a | INT_SPEC | NO_O_MOD, /* D */ 0x02 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* E */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* F */ 0x03 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* G */ 0x03 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* H */ 0x0b | INT_SPEC | NO_E_MOD, /* I */ 0x0c | INT_SPEC | NO_E_MOD, /* J */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* K */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* L */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* M */ 0x0d | INT_SPEC | NO_E_MOD, /* N */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* O */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* P */ 0x05 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* glibc ; use %p */ /* Q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* R */ 0x04 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* S */ 0x0e | INT_SPEC | NO_E_MOD, /* T */ 0x05 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* U */ 0x04 | CALC_SPEC | NO_E_MOD, /* V */ 0x05 | CALC_SPEC | NO_E_MOD, /* W */ 0x06 | CALC_SPEC | NO_E_MOD, /* X */ 0x0a | STACKED_SPEC | NO_O_MOD, /* Y */ 0x0f | INT_SPEC | NO_O_MOD, /* Z */ 0x01 | CALC_SPEC | NO_E_MOD | NO_O_MOD, '?', /* 26 */ '?', /* 27 */ '?', /* 28 */ '?', /* 29 */ 0, /* 30 */ 0, /* 31 */ /* a */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* b */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* c */ 0x08 | STACKED_SPEC | NO_O_MOD, /* d */ 0x00 | INT_SPEC | NO_E_MOD, /* e */ 0x01 | INT_SPEC | NO_E_MOD, /* f */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* g */ 0x02 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* h */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* same as b */ /* i */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* j */ 0x08 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* k */ 0x03 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* l */ 0x04 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* m */ 0x05 | INT_SPEC | NO_E_MOD, /* n */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* o */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* p */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* r */ 0x0b | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* s */ 0x07 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* t */ 0x01 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* u */ 0x07 | INT_SPEC | NO_E_MOD, /* v */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* w */ 0x02 | INT_SPEC | NO_E_MOD, /* x */ 0x09 | STACKED_SPEC | NO_O_MOD, /* y */ 0x09 | INT_SPEC, /* z */ 0x00 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* WARNING!!! These are dependent on the layout of struct tm!!! */ #define FIELD_MAX (26+6+26) 60 /* 61? */, 59, 23, 31, 11, 0 /* 9999 */, 6, 0 /* 365 */, #define TP_OFFSETS (FIELD_MAX+8) 3, /* d */ 3, /* e */ 6, /* w */ 2, /* k */ 2, /* l */ 4, /* m */ 0, /* CURRENTLY UNUSED */ /* NOTE: u,j,y order must be preserved as 6,7,5 seq is used in the code! */ #define CALC_OFFSETS (TP_OFFSETS + 7) 6, /* u */ 7, /* j */ 5, /* y */ 5, /* C */ 2, /* H */ 2, /* I */ 1, /* M */ 0, /* S */ 5, /* Y */ 6, /* a */ 4, /* b, h */ 2, /* p */ 6, /* A */ 4, /* B */ 2, /* P */ #define TP_CODES (TP_OFFSETS + 16 + 6) 2 | 16, /* d */ 2, /* e */ 0 | 16, /* w */ 2, /* k */ 2 | 32 | 0, /* l */ 2 | 16 | 1, /* m */ 0, /* CURRENTLY UNUSED */ 0 | 16 | 8 , /* u */ 4 | 16 | 1, /* j */ 2 | 128 | 32 | 16 , /* y */ 2 | 128 | 64 | 32 | 16 , /* C */ 2 | 16, /* H */ 2 | 32 | 16 | 0, /* I */ 2 | 16, /* M */ 2 | 16, /* S */ 6 | 16, /* Y */ 2, /* a */ 2, /* b, h */ 2 | 64, /* p */ 2, /* A */ 2, /* B */ 2 | 64, /* P */ #define STRINGS_NL_ITEM_START (TP_CODES + 16 + 6) _NL_ITEM_INDEX(ABDAY_1), /* a */ _NL_ITEM_INDEX(ABMON_1), /* b, h */ _NL_ITEM_INDEX(AM_STR), /* p */ _NL_ITEM_INDEX(DAY_1), /* A */ _NL_ITEM_INDEX(MON_1), /* B */ _NL_ITEM_INDEX(AM_STR), /* P -- wrong! need lower case */ #define STACKED_STRINGS_START (STRINGS_NL_ITEM_START+6) 6, 7, 8, 16, 24, 29, /* 6 - offsets from offset-count to strings */ '\n', 0, /* 2 */ '\t', 0, /* 2 */ '%', 'm', '/', '%', 'd', '/', '%', 'y', 0, /* 9 - %D */ '%', 'Y', '-', '%', 'm', '-', '%', 'd', 0, /* 9 - %F (glibc extension) */ '%', 'H', ':', '%', 'M', 0, /* 6 - %R*/ '%', 'H', ':', '%', 'M', ':', '%', 'S', 0, /* 9 - %T */ #define STACKED_STRINGS_NL_ITEM_START (STACKED_STRINGS_START + 43) _NL_ITEM_INDEX(D_T_FMT), /* c */ _NL_ITEM_INDEX(D_FMT), /* x */ _NL_ITEM_INDEX(T_FMT), /* X */ _NL_ITEM_INDEX(T_FMT_AMPM), /* r */ #ifdef ENABLE_ERA_CODE _NL_ITEM_INDEX(ERA_D_T_FMT), /* Ec */ _NL_ITEM_INDEX(ERA_D_FMT), /* Ex */ _NL_ITEM_INDEX(ERA_T_FMT), /* EX */ #endif }; static int load_field(int k, const struct tm *__restrict timeptr) { int r; int r_max; r = ((int *) timeptr)[k]; r_max = spec[FIELD_MAX + k]; if (k == 7) { r_max = 365; } else if (k == 5) { r += 1900; r_max = 9999; } if ((((unsigned int) r) > r_max) || ((k == 3) && !r)) { r = -1; } return r; } #define MAX_PUSH 4 #ifdef __UCLIBC_MJN3_ONLY__ #warning TODO: Check multibyte format string validity. #endif size_t __XL(strftime)(char *__restrict s, size_t maxsize, const char *__restrict format, const struct tm *__restrict timeptr __LOCALE_PARAM ) { long tzo; register const char *p; register const char *o; const rule_struct *rsp; const char *stack[MAX_PUSH]; size_t count; size_t o_count; int field_val, i, j, lvl; int x[3]; /* wday, yday, year */ int isofm, days; char buf[__UIM_BUFLEN_LONG]; unsigned char mod; unsigned char code; tzset(); /* We'll, let's get this out of the way. */ lvl = 0; p = format; count = maxsize; LOOP: if (!count) { return 0; } if (!*p) { if (lvl == 0) { *s = 0; /* nul-terminate */ return maxsize - count; } p = stack[--lvl]; goto LOOP; } o_count = 1; if ((*(o = p) == '%') && (*++p != '%')) { o_count = 2; mod = ILLEGAL_SPEC; if ((*p == 'O') || (*p == 'E')) { /* modifier */ mod |= ((*p == 'O') ? NO_O_MOD : NO_E_MOD); ++o_count; ++p; } if ((((unsigned char)(((*p) | 0x20) - 'a')) >= 26) || (((code = spec[(int)(*p - 'A')]) & mod) >= ILLEGAL_SPEC) ) { if (!*p) { --p; --o_count; } goto OUTPUT; } code &= ILLEGAL_SPEC; /* modifiers are preserved in mod var. */ if ((code & MASK_SPEC) == STACKED_SPEC) { if (lvl == MAX_PUSH) { goto OUTPUT; /* Stack full so treat as illegal spec. */ } stack[lvl++] = ++p; if ((code &= 0xf) < 8) { p = ((const char *) spec) + STACKED_STRINGS_START + code; p += *((unsigned char *)p); goto LOOP; } p = ((const char *) spec) + STACKED_STRINGS_NL_ITEM_START + (code & 7); #ifdef ENABLE_ERA_CODE if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */ && (*(o = __XL(nl_langinfo)(_NL_ITEM(LC_TIME, (int)(((unsigned char *)p)[4])) __LOCALE_ARG ))) ) { p = o; goto LOOP; } #endif p = __XL(nl_langinfo)(_NL_ITEM(LC_TIME, (int)(*((unsigned char *)p))) __LOCALE_ARG ); goto LOOP; } o = spec + 26; /* set to "????" */ if ((code & MASK_SPEC) == CALC_SPEC) { if (*p == 's') { time_t t; /* Use a cast to silence the warning since *timeptr won't * be changed. */ if ((t = _time_mktime((struct tm *) timeptr, 0)) == ((time_t) -1) ) { o_count = 1; goto OUTPUT; } #ifdef TIME_T_IS_UNSIGNED o = _uintmaxtostr(buf + sizeof(buf) - 1, (uintmax_t) t, 10, __UIM_DECIMAL); #else o = _uintmaxtostr(buf + sizeof(buf) - 1, (uintmax_t) t, -10, __UIM_DECIMAL); #endif o_count = sizeof(buf); goto OUTPUT; } else if (((*p) | 0x20) == 'z') { /* 'z' or 'Z' */ if (timeptr->tm_isdst < 0) { /* SUSv3 specifies this behavior for 'z', but we'll also * treat it as "no timezone info" for 'Z' too. */ o_count = 0; goto OUTPUT; } TZLOCK; rsp = _time_tzinfo; if (timeptr->tm_isdst > 0) { ++rsp; } if (*p == 'Z') { o = rsp->tzname; assert(o != NULL); #if 0 if (!o) { /* PARANOIA */ o = spec+30; /* empty string */ } #endif o_count = SIZE_MAX; TZUNLOCK; goto OUTPUT; } else { /* z */ *s = '+'; if ((tzo = -rsp->gmt_offset) < 0) { tzo = -tzo; *s = '-'; } TZUNLOCK; ++s; --count; i = tzo / 60; field_val = ((i / 60) * 100) + (i % 60); i = 16 + 6; /* 0-fill, width = 4 */ } } else { /* TODO: don't need year for U, W */ for (i=0 ; i < 3 ; i++) { if ((x[i] = load_field(spec[CALC_OFFSETS+i],timeptr)) < 0) { goto OUTPUT; } } i = 16 + 2; /* 0-fill, width = 2 */ if ((*p == 'U') || (*p == 'W')) { field_val = ((x[1] - x[0]) + 7); if (*p == 'W') { ++field_val; } field_val /= 7; if ((*p == 'W') && !x[0]) { --field_val; } } else { /* ((*p == 'g') || (*p == 'G') || (*p == 'V')) */ ISO_LOOP: isofm = (((x[1] - x[0]) + 11) % 7) - 3; /* [-3,3] */ if (x[1] < isofm) { /* belongs to previous year */ --x[2]; x[1] += 365 + __isleap(x[2]); goto ISO_LOOP; } field_val = ((x[1] - isofm) / 7) + 1; /* week # */ days = 365 + __isleap(x[2]); isofm = ((isofm + 7*53 + 3 - days)) %7 + days - 3; /* next year */ if (x[1] >= isofm) { /* next year */ x[1] -= days; ++x[2]; goto ISO_LOOP; } if (*p != 'V') { /* need year */ field_val = x[2]; /* TODO: what if x[2] now 10000 ?? */ if (*p == 'g') { field_val %= 100; } else { i = 16 + 6; /* 0-fill, width = 4 */ } } } } } else { i = TP_OFFSETS + (code & 0x1f); if ((field_val = load_field(spec[i],timeptr)) < 0) { goto OUTPUT; } i = spec[i+(TP_CODES - TP_OFFSETS)]; j = (i & 128) ? 100: 12; if (i & 64) { field_val /= j;; } if (i & 32) { field_val %= j; if (((i&128) + field_val) == 0) { /* mod 12? == 0 */ field_val = j; /* set to 12 */ } } field_val += (i & 1); if ((i & 8) && !field_val) { field_val += 7; } } if ((code & MASK_SPEC) == STRING_SPEC) { o_count = SIZE_MAX; field_val += spec[STRINGS_NL_ITEM_START + (code & 0xf)]; o = __XL(nl_langinfo)(_NL_ITEM(LC_TIME, field_val) __LOCALE_ARG ); } else { o_count = ((i >> 1) & 3) + 1; o = buf + o_count; do { *(char *)(--o) = '0' + (field_val % 10); field_val /= 10; } while (o > buf); if (*buf == '0') { *buf = ' ' + (i & 16); } } } OUTPUT: ++p; while (o_count && count && *o) { *s++ = *o++; --o_count; --count; } goto LOOP; } __XL_ALIAS(strftime) #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */ #endif /**********************************************************************/ #if defined(L_strptime) || defined(L_strptime_l) #if defined(L_strptime) || defined(L_strptime_l) #define ISDIGIT(C) __isdigit_char((C)) #endif #ifdef __UCLIBC_DO_XLOCALE #define ISSPACE(C) isspace_l((C), locale_arg) #else #define ISSPACE(C) isspace((C)) #endif #if defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) char *strptime(const char *__restrict buf, const char *__restrict format, struct tm *__restrict tm) { return __strptime_l(buf, format, tm, __UCLIBC_CURLOCALE); } #else /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */ /* TODO: * 1) %l and %k are space-padded, so "%l" by itself fails while " %l" succeeds. * Both work for glibc. So, should we always strip spaces? * 2) %Z */ /* Notes: * There are several differences between this strptime and glibc's strptime. * 1) glibc strips leading space before numeric conversions. * 2) glibc will read fields without whitespace in between. SUSv3 states * that you must have whitespace between conversion operators. Besides, * how do you know how long a number should be if there are leading 0s? * 3) glibc attempts to compute some the struct tm fields based on the * data retrieved; tm_wday in particular. I don't as I consider it * another glibc attempt at mind-reading... */ #define NO_E_MOD 0x80 #define NO_O_MOD 0x40 #define ILLEGAL_SPEC 0x3f #define INT_SPEC 0x00 /* must be 0x00!! */ #define STRING_SPEC 0x10 /* must be 0x10!! */ #define CALC_SPEC 0x20 #define STACKED_SPEC 0x30 #define MASK_SPEC 0x30 /* Warning: Assumes ASCII values! (as do lots of other things in the lib...) */ static const unsigned char spec[] = { /* A */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* B */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* C */ 0x08 | INT_SPEC | NO_O_MOD, /* D */ 0x01 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* E */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* F */ 0x02 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* G */ 0x0f | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* H */ 0x06 | INT_SPEC | NO_E_MOD, /* I */ 0x07 | INT_SPEC | NO_E_MOD, /* J */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* K */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* L */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* M */ 0x04 | INT_SPEC | NO_E_MOD, /* N */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* O */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* P */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* Q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* R */ 0x03 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* S */ 0x05 | INT_SPEC | NO_E_MOD, /* T */ 0x04 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* U */ 0x0c | INT_SPEC | NO_E_MOD, /* V */ 0x0d | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* W */ 0x0c | INT_SPEC | NO_E_MOD, /* X */ 0x0a | STACKED_SPEC | NO_O_MOD, /* Y */ 0x0a | INT_SPEC | NO_O_MOD, /* Z */ 0x02 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* WARNING! This assumes orderings: * AM,PM * ABDAY_1-ABDAY-7,DAY_1-DAY_7 * ABMON_1-ABMON_12,MON_1-MON12 * Also, there are exactly 6 bytes between 'Z' and 'a'. */ #define STRINGS_NL_ITEM_START (26) _NL_ITEM_INDEX(AM_STR), /* p (P) */ _NL_ITEM_INDEX(ABMON_1), /* B, b */ _NL_ITEM_INDEX(ABDAY_1), /* A, a */ 2, 24, 14, /* a */ 0x02 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* b */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* c */ 0x08 | STACKED_SPEC | NO_O_MOD, /* d */ 0x00 | INT_SPEC | NO_E_MOD, /* e */ 0x00 | INT_SPEC | NO_E_MOD, /* f */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* g */ 0x0e | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* h */ 0x01 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* i */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* j */ 0x01 | INT_SPEC | NO_E_MOD | NO_O_MOD, /* k */ 0x06 | INT_SPEC | NO_E_MOD, /* glibc */ /* l */ 0x07 | INT_SPEC | NO_E_MOD, /* glibc */ /* m */ 0x02 | INT_SPEC | NO_E_MOD, /* n */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* o */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* p */ 0x00 | STRING_SPEC | NO_E_MOD | NO_O_MOD, /* q */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* r */ 0x0b | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* s */ 0x00 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* t */ 0x00 | STACKED_SPEC | NO_E_MOD | NO_O_MOD, /* u */ 0x0b | INT_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ /* v */ ILLEGAL_SPEC | NO_E_MOD | NO_O_MOD, /* w */ 0x03 | INT_SPEC | NO_E_MOD, /* x */ 0x09 | STACKED_SPEC | NO_O_MOD, /* y */ 0x09 | INT_SPEC, /* z */ 0x01 | CALC_SPEC | NO_E_MOD | NO_O_MOD, /* glibc */ #define INT_FIELD_START (26+6+26) /* (field #) << 3 + lower bound (0|1) + correction 0:none, 2:-1, 4:-1900 * followed by upper bound prior to correction with 1=>366 and 2=>9999. */ /* d, e */ (3 << 3) + 1 + 0, 31, /* j */ (7 << 3) + 1 + 2, /* 366 */ 1, /* m */ (4 << 3) + 1 + 2, 12, /* w */ (6 << 3) + 0 + 0, 6, /* M */ (1 << 3) + 0 + 0, 59, /* S */ 0 + 0 + 0, 60, /* H (k) */ (2 << 3) + 0 + 0, 23, /* I (l) */ (9 << 3) + 1 + 0, 12, /* goes with 8 -- am/pm */ /* C */ (10<< 3) + 0 + 0, 99, /* y */ (11<< 3) + 0 + 0, 99, /* Y */ (5 << 3) + 0 + 4, /* 9999 */ 2, /* u */ (6 << 3) + 1 + 0, 7, /* The following are processed and range-checked, but ignored otherwise. */ /* U, W */ (12<< 3) + 0 + 0, 53, /* V */ (12<< 3) + 1 + 0, 53, /* g */ (12<< 3) + 0 + 0, 99, /* G */ (12<< 3) + 0 /*+ 4*/, /* 9999 */ 2, /* Note: -1 or 10000? */ #define STACKED_STRINGS_START (INT_FIELD_START+32) 5, 6, 14, 22, 27, /* 5 - offsets from offset-count to strings */ ' ', 0, /* 2 - %n or %t */ '%', 'm', '/', '%', 'd', '/', '%', 'y', 0, /* 9 - %D */ '%', 'Y', '-', '%', 'm', '-', '%', 'd', 0, /* 9 - %F (glibc extension) */ '%', 'H', ':', '%', 'M', 0, /* 6 - %R*/ '%', 'H', ':', '%', 'M', ':', '%', 'S', 0, /* 9 - %T */ #define STACKED_STRINGS_NL_ITEM_START (STACKED_STRINGS_START + 40) _NL_ITEM_INDEX(D_T_FMT), /* c */ _NL_ITEM_INDEX(D_FMT), /* x */ _NL_ITEM_INDEX(T_FMT), /* X */ _NL_ITEM_INDEX(T_FMT_AMPM), /* r */ #ifdef ENABLE_ERA_CODE _NL_ITEM_INDEX(ERA_D_T_FMT), /* Ec */ _NL_ITEM_INDEX(ERA_D_FMT), /* Ex */ _NL_ITEM_INDEX(ERA_T_FMT), /* EX */ #endif }; #define MAX_PUSH 4 char *__XL(strptime)(const char *__restrict buf, const char *__restrict format, struct tm *__restrict tm __LOCALE_PARAM) { register const char *p; char *o; const char *stack[MAX_PUSH]; int i, j, lvl; int fields[13]; unsigned char mod; unsigned char code; i = 0; do { fields[i] = INT_MIN; } while (++i < 13); lvl = 0; p = format; LOOP: if (!*p) { if (lvl == 0) { /* Done. */ if (fields[6] == 7) { /* Cleanup for %u here since just once. */ fields[6] = 0; /* Don't use mod in case unset. */ } i = 0; do { /* Store the values into tm. */ ((int *) tm)[i] = fields[i]; } while (++i < 8); return (char *) buf; /* Success. */ } p = stack[--lvl]; goto LOOP; } if ((*p == '%') && (*++p != '%')) { mod = ILLEGAL_SPEC; if ((*p == 'O') || (*p == 'E')) { /* Modifier? */ mod |= ((*p == 'O') ? NO_O_MOD : NO_E_MOD); ++p; } if (!*p || (((unsigned char)(((*p) | 0x20) - 'a')) >= 26) || (((code = spec[(int)(*p - 'A')]) & mod) >= ILLEGAL_SPEC) ) { return NULL; /* Illegal spec. */ } if ((code & MASK_SPEC) == STACKED_SPEC) { if (lvl == MAX_PUSH) { return NULL; /* Stack full so treat as illegal spec. */ } stack[lvl++] = ++p; if ((code &= 0xf) < 8) { p = ((const char *) spec) + STACKED_STRINGS_START + code; p += *((unsigned char *)p); goto LOOP; } p = ((const char *) spec) + STACKED_STRINGS_NL_ITEM_START + (code & 7); #ifdef ENABLE_ERA_CODE if ((mod & NO_E_MOD) /* Actually, this means E modifier present. */ && (*(o = __XL(nl_langinfo)(_NL_ITEM(LC_TIME, (int)(((unsigned char *)p)[4])) __LOCALE_ARG ))) ) { p = o; goto LOOP; } #endif p = __XL(nl_langinfo)(_NL_ITEM(LC_TIME, (int)(*((unsigned char *)p))) __LOCALE_ARG ); goto LOOP; } ++p; if ((code & MASK_SPEC) == STRING_SPEC) { code &= 0xf; j = spec[STRINGS_NL_ITEM_START + 3 + code]; i = _NL_ITEM(LC_TIME, spec[STRINGS_NL_ITEM_START + code]); /* Go backwards to check full names before abreviations. */ do { --j; o = __XL(nl_langinfo)(i+j __LOCALE_ARG); if (!__XL(strncasecmp)(buf,o,strlen(o) __LOCALE_ARG) && *o) { do { /* Found a match. */ ++buf; } while (*++o); if (!code) { /* am/pm */ fields[8] = j * 12; if (fields[9] >= 0) { /* We have a previous %I or %l. */ fields[2] = fields[9] + fields[8]; } } else { /* day (4) or month (6) */ fields[2 + (code << 1)] = j % (spec[STRINGS_NL_ITEM_START + 3 + code] >> 1); } goto LOOP; } } while (j); return NULL; /* Failed to match. */ } if ((code & MASK_SPEC) == CALC_SPEC) { if ((code &= 0xf) < 1) { /* s or z*/ time_t t; o = (char *) buf; i = errno; __set_errno(0); if (!ISSPACE(*buf)) { /* Signal an error if whitespace. */ #ifdef TIME_T_IS_UNSIGNED t = __XL(strtoul)(buf, &o, 10 __LOCALE_ARG); #else t = __XL(strtol)(buf, &o, 10 __LOCALE_ARG); #endif } if ((o == buf) || errno) { /* Not a number or overflow. */ return NULL; } __set_errno(i); /* Restore errno. */ buf = o; if (!code) { /* s */ localtime_r(&t, tm); /* TODO: check for failure? */ i = 0; do { /* Now copy values from tm to fields. */ fields[i] = ((int *) tm)[i]; } while (++i < 8); } } /* TODO: glibc treats %Z as a nop. For now, do the same. */ goto LOOP; } assert((code & MASK_SPEC) == INT_SPEC); { register const unsigned char *x; code &= 0xf; x = spec + INT_FIELD_START + (code << 1); if ((j = x[1]) < 3) { /* upper bound (inclusive) */ j = ((j==1) ? 366 : 9999); } i = -1; while (ISDIGIT(*buf)) { if (i < 0) { i = 0; } if ((i = 10*i + (*buf - '0')) > j) { /* Overflow. */ return NULL; } ++buf; } if (i < (*x & 1)) { /* This catches no-digit case too. */ return NULL; } if (*x & 2) { --i; } if (*x & 4) { i -= 1900; } if (*x == (9 << 3) + 1 + 0) { /* %I or %l */ if (i == 12) { i = 0; } if (fields[8] >= 0) { /* We have a previous %p or %P. */ fields[2] = i + fields[8]; } } fields[(*x) >> 3] = i; if (((unsigned char)(*x - (10<< 3) + 0 + 0)) <= 8) { /* %C or %y */ if ((j = fields[10]) < 0) { /* No %C, so i must be %y data. */ if (i <= 68) { /* Map [0-68] to 2000+i */ i += 100; } } else { /* Have %C data, but what about %y? */ if ((i = fields[11]) < 0) { /* No %y data. */ i = 0; /* Treat %y val as 0 following glibc's example. */ } i += 100*(j - 19); } fields[5] = i; } } goto LOOP; } else if (ISSPACE(*p)) { ++p; while (ISSPACE(*buf)) { ++buf; } goto LOOP; } else if (*buf++ == *p++) { goto LOOP; } return NULL; } __XL_ALIAS(strptime) #endif /* defined(__UCLIBC_HAS_XLOCALE__) && !defined(__UCLIBC_DO_XLOCALE) */ #endif /**********************************************************************/ #ifdef L_time #ifndef __BCC__ #error The uClibc version of time is in sysdeps/linux/common. #endif time_t time(register time_t *tloc) { struct timeval tv; register struct timeval *p = &tv; gettimeofday(p, NULL); /* This should never fail... */ if (tloc) { *tloc = p->tv_sec; } return p->tv_sec; } #endif /**********************************************************************/ #ifdef L_tzset static const char vals[] = { 'T', 'Z', 0, /* 3 */ 'U', 'T', 'C', 0, /* 4 */ 25, 60, 60, 1, /* 4 */ '.', 1, /* M */ 5, '.', 1, 6, 0, 0, /* Note: overloaded for non-M non-J case... */ 0, 1, 0, /* J */ ',', 'M', '4', '.', '1', '.', '0', ',', 'M', '1', '0', '.', '5', '.', '0', 0 }; #define TZ vals #define UTC (vals + 3) #define RANGE (vals + 7) #define RULE (vals + 11 - 1) #define DEFAULT_RULES (vals + 22) /* Initialize to UTC. */ int daylight = 0; long timezone = 0; char *tzname[2] = { (char *) UTC, (char *) (UTC-1) }; #ifdef __UCLIBC_HAS_THREADS__ pthread_mutex_t _time_tzlock = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP; #endif rule_struct _time_tzinfo[2]; static const char *getoffset(register const char *e, long *pn) { register const char *s = RANGE-1; long n; int f; n = 0; f = -1; do { ++s; if (__isdigit_char(*e)) { f = *e++ - '0'; } if (__isdigit_char(*e)) { f = 10 * f + (*e++ - '0'); } if (((unsigned int)f) >= *s) { return NULL; } n = (*s) * n + f; f = 0; if (*e == ':') { ++e; --f; } } while (*s > 1); *pn = n; return e; } static const char *getnumber(register const char *e, int *pn) { #ifdef __BCC__ /* bcc can optimize the counter if it thinks it is a pointer... */ register const char *n = (const char *) 3; int f; f = 0; while (n && __isdigit_char(*e)) { f = 10 * f + (*e++ - '0'); --n; } *pn = f; return (n == (const char *) 3) ? NULL : e; #else /* __BCC__ */ int n, f; n = 3; f = 0; while (n && __isdigit_char(*e)) { f = 10 * f + (*e++ - '0'); --n; } *pn = f; return (n == 3) ? NULL : e; #endif /* __BCC__ */ } #ifdef __UCLIBC_MJN3_ONLY__ #warning CONSIDER: Should we preserve errno from open/read/close errors re TZ file? #endif #ifdef __UCLIBC_HAS_TZ_FILE__ #ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__ static int TZ_file_read; /* Let BSS initialization set this to 0. */ #endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */ static char *read_TZ_file(char *buf) { int fd; ssize_t r; size_t todo; char *p = NULL; if ((fd = open(__UCLIBC_TZ_FILE_PATH__, O_RDONLY)) >= 0) { todo = TZ_BUFLEN; p = buf; do { if ((r = read(fd, p, todo)) < 0) { goto ERROR; } if (r == 0) { break; } p += r; todo -= r; } while (todo); if ((p > buf) && (p[-1] == '\n')) { /* Must end with newline. */ p[-1] = 0; p = buf; #ifndef __UCLIBC_HAS_TZ_FILE_READ_MANY__ ++TZ_file_read; #endif /* __UCLIBC_HAS_TZ_FILE_READ_MANY__ */ } else { ERROR: p = NULL; } close(fd); } return p; } #endif /* __UCLIBC_HAS_TZ_FILE__ */ void tzset(void) { register const char *e; register char *s; long off; short *p; rule_struct new_rules[2]; int n, count, f; char c; #ifdef __UCLIBC_HAS_TZ_FILE__ char buf[TZ_BUFLEN]; #endif /* __UCLIBC_HAS_TZ_FILE__ */ #ifdef __UCLIBC_HAS_TZ_CACHING__ static char oldval[TZ_BUFLEN]; /* BSS-zero'd. */ #endif /* __UCLIBC_HAS_TZ_CACHING__ */ TZLOCK; e = getenv(TZ); /* TZ env var always takes precedence. */ #if defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__) /* Put this inside the lock to prevent the possiblity of two different * timezones being used in a threaded app. */ if (e != NULL) { TZ_file_read = 0; /* Reset if the TZ env var is set. */ } else if (TZ_file_read > 0) { goto FAST_DONE; } #endif /* defined(__UCLIBC_HAS_TZ_FILE__) && !defined(__UCLIBC_HAS_TZ_FILE_READ_MANY__) */ /* Warning!!! Since uClibc doesn't do lib locking, the following is * potentially unsafe in a multi-threaded program since it is remotely * possible that another thread could call setenv() for TZ and overwrite * the string being parsed. So, don't do that... */ if ((!e /* TZ env var not set... */ #ifdef __UCLIBC_HAS_TZ_FILE__ && !(e = read_TZ_file(buf)) /* and no file or invalid file */ #endif /* __UCLIBC_HAS_TZ_FILE__ */ ) || !*e) { /* or set to empty string. */ ILLEGAL: /* TODO: Clean up the following... */ #ifdef __UCLIBC_HAS_TZ_CACHING__ *oldval = 0; /* Set oldval to an empty string. */ #endif /* __UCLIBC_HAS_TZ_CACHING__ */ memset(_time_tzinfo, 0, 2*sizeof(rule_struct)); strcpy(_time_tzinfo[0].tzname, UTC); goto DONE; } if (*e == ':') { /* Ignore leading ':'. */ ++e; } #ifdef __UCLIBC_HAS_TZ_CACHING__ if (strcmp(e, oldval) == 0) { /* Same string as last time... */ goto FAST_DONE; /* So nothing to do. */ } /* Make a copy of the TZ env string. It won't be nul-terminated if * it is too long, but it that case it will be illegal and will be reset * to the empty string anyway. */ strncpy(oldval, e, TZ_BUFLEN); #endif /* __UCLIBC_HAS_TZ_CACHING__ */ count = 0; new_rules[1].tzname[0] = 0; LOOP: /* Get std or dst name. */ c = 0; if (*e == '<') { ++e; c = '>'; } s = new_rules[count].tzname; n = 0; while (*e && isascii(*e) /* SUSv3 requires char in portable char set. */ && (isalpha(*e) || (c && (isalnum(*e) || (*e == '+') || (*e == '-')))) ) { *s++ = *e++; if (++n > TZNAME_MAX) { goto ILLEGAL; } } *s = 0; if ((n < 3) /* Check for minimum length. */ || (c && (*e++ != c)) /* Match any quoting '<'. */ ) { goto ILLEGAL; } /* Get offset */ s = (char *) e; if ((*e != '-') && (*e != '+')) { if (count && !__isdigit_char(*e)) { off -= 3600; /* Default to 1 hour ahead of std. */ goto SKIP_OFFSET; } --e; } ++e; if (!(e = getoffset(e, &off))) { goto ILLEGAL; } if (*s == '-') { off = -off; /* Save off in case needed for dst default. */ } SKIP_OFFSET: new_rules[count].gmt_offset = off; if (!count) { new_rules[1].gmt_offset = off; /* Shouldn't be needed... */ if (*e) { ++count; goto LOOP; } } else { /* OK, we have dst, so get some rules. */ count = 0; if (!*e) { /* No rules so default to US rules. */ e = DEFAULT_RULES; } do { if (*e++ != ',') { goto ILLEGAL; } n = 365; s = (char *) RULE; if ((c = *e++) == 'M') { n = 12; } else if (c == 'J') { s += 8; } else { --e; c = 0; s += 6; } *(p = &new_rules[count].rule_type) = c; if (c != 'M') { p -= 2; } do { ++s; if (!(e = getnumber(e, &f)) || (((unsigned int)(f - s[1])) > n) || (*s && (*e++ != *s)) ) { goto ILLEGAL; } *--p = f; } while ((n = *(s += 2)) > 0); off = 2 * 60 * 60; /* Default to 2:00:00 */ if (*e == '/') { ++e; if (!(e = getoffset(e, &off))) { goto ILLEGAL; } } new_rules[count].dst_offset = off; } while (++count < 2); if (*e) { goto ILLEGAL; } } memcpy(_time_tzinfo, new_rules, sizeof(new_rules)); DONE: tzname[0] = _time_tzinfo[0].tzname; tzname[1] = _time_tzinfo[1].tzname; daylight = !!_time_tzinfo[1].tzname[0]; timezone = _time_tzinfo[0].gmt_offset; FAST_DONE: TZUNLOCK; } #endif /**********************************************************************/ /* #ifdef L_utime */ /* utime is a syscall in both linux and elks. */ /* int utime(const char *path, const struct utimbuf *times) */ /* #endif */ /**********************************************************************/ /* Non-SUSv3 */ /**********************************************************************/ #ifdef L_utimes #ifndef __BCC__ #error The uClibc version of utimes is in sysdeps/linux/common. #endif #include <utime.h> #include <sys/time.h> int utimes(const char *filename, register const struct timeval *tvp) { register struct utimbuf *p = NULL; struct utimbuf utb; if (tvp) { p = &utb; p->actime = tvp[0].tv_sec; p->modtime = tvp[1].tv_sec; } return utime(filename, p); } #endif /**********************************************************************/ #ifdef L__time_t2tm static const uint16_t vals[] = { 60, 60, 24, 7 /* special */, 36524, 1461, 365, 0 }; static const unsigned char days[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, /* non-leap */ 29, }; #ifdef __UCLIBC_HAS_TM_EXTENSIONS__ static const char utc_string[] = "UTC"; #endif /* Notes: * If time_t is 32 bits, then no overflow is possible. * It time_t is > 32 bits, this needs to be adjusted to deal with overflow. */ /* Note: offset is the correction in _days_ to *timer! */ struct tm *_time_t2tm(const time_t *__restrict timer, int offset, struct tm *__restrict result) { register int *p; time_t t1, t, v; int wday; /* Note: wday can be uninitialized. */ { register const uint16_t *vp; t = *timer; p = (int *) result; p[7] = 0; vp = vals; do { if ((v = *vp) == 7) { /* Overflow checking, assuming time_t is long int... */ #if (LONG_MAX > INT_MAX) && (LONG_MAX > 2147483647L) #if (INT_MAX == 2147483647L) && (LONG_MAX == 9223372036854775807L) /* Valid range for t is [-784223472856L, 784223421720L]. * Outside of this range, the tm_year field will overflow. */ if (((unsigned long)(t + offset- -784223472856L)) > (784223421720L - -784223472856L) ) { return NULL; } #else #error overflow conditions unknown #endif #endif /* We have days since the epoch, so caluclate the weekday. */ #if defined(__BCC__) && TIME_T_IS_UNSIGNED wday = (t + 4) % (*vp); /* t is unsigned */ #else wday = ((int)((t % (*vp)) + 11)) % ((int)(*vp)); /* help bcc */ #endif /* Set divisor to days in 400 years. Be kind to bcc... */ v = ((time_t)(vp[1])) << 2; ++v; /* Change to days since 1/1/1601 so that for 32 bit time_t * values, we'll have t >= 0. This should be changed for * archs with larger time_t types. * Also, correct for offset since a multiple of 7. */ /* TODO: Does this still work on archs with time_t > 32 bits? */ t += (135140L - 366) + offset; /* 146097 - (365*30 + 7) -366 */ } #if defined(__BCC__) && TIME_T_IS_UNSIGNED t -= ((t1 = t / v) * v); #else if ((t -= ((t1 = t / v) * v)) < 0) { t += v; --t1; } #endif if ((*vp == 7) && (t == v-1)) { --t; /* Correct for 400th year leap case */ ++p[4]; /* Stash the extra day... */ } #if defined(__BCC__) && 0 *p = t1; if (v <= 60) { *p = t; t = t1; } ++p; #else if (v <= 60) { *p++ = t; t = t1; } else { *p++ = t1; } #endif } while (*++vp); } if (p[-1] == 4) { --p[-1]; t = 365; } *p += ((int) t); /* result[7] .. tm_yday */ p -= 2; /* at result[5] */ #if (LONG_MAX > INT_MAX) && (LONG_MAX > 2147483647L) /* Protect against overflow. TODO: Unecessary if int arith wraps? */ *p = ((((p[-2]<<2) + p[-1])*25 + p[0])<< 2) + (p[1] - 299); /* tm_year */ #else *p = ((((p[-2]<<2) + p[-1])*25 + p[0])<< 2) + p[1] - 299; /* tm_year */ #endif p[1] = wday; /* result[6] .. tm_wday */ { register const unsigned char *d = days; wday = 1900 + *p; if (__isleap(wday)) { d += 11; } wday = p[2] + 1; /* result[7] .. tm_yday */ *--p = 0; /* at result[4] .. tm_mon */ while (wday > *d) { wday -= *d; if (*d == 29) { d -= 11; /* Backup to non-leap Feb. */ } ++d; ++*p; /* Increment tm_mon. */ } p[-1] = wday; /* result[3] .. tm_mday */ } /* TODO -- should this be 0? */ p[4] = 0; /* result[8] .. tm_isdst */ #ifdef __UCLIBC_HAS_TM_EXTENSIONS__ result->tm_gmtoff = 0; result->tm_zone = utc_string; #endif /* __UCLIBC_HAS_TM_EXTENSIONS__ */ return result; } #endif /**********************************************************************/ #ifdef L___time_tm struct tm __time_tm; /* Global shared by gmtime() and localtime(). */ #endif /**********************************************************************/ #ifdef L__time_mktime static const unsigned char vals[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31, /* non-leap */ 29, }; time_t _time_mktime(struct tm *timeptr, int store_on_success) { #ifdef __BCC__ long days, secs; #else long long secs; #endif time_t t; struct tm x; /* 0:sec 1:min 2:hour 3:mday 4:mon 5:year 6:wday 7:yday 8:isdst */ register int *p = (int *) &x; register const unsigned char *s; int d, default_dst; TZLOCK; tzset(); memcpy(p, timeptr, sizeof(struct tm)); if (!_time_tzinfo[1].tzname[0]) { /* No dst in this timezone, */ p[8] = 0; /* so set tm_isdst to 0. */ } default_dst = 0; if (p[8]) { /* Either dst or unknown? */ default_dst = 1; /* Assume advancing (even if unknown). */ p[8] = ((p[8] > 0) ? 1 : -1); /* Normalize so abs() <= 1. */ } d = 400; p[5] = (p[5] - ((p[6] = p[5]/d) * d)) + (p[7] = p[4]/12); if ((p[4] -= 12 * p[7]) < 0) { p[4] += 12; --p[5]; } s = vals; d = (p[5] += 1900); /* Correct year. Now between 1900 and 2300. */ if (__isleap(d)) { s += 11; } p[7] = 0; d = p[4]; while (d) { p[7] += *s; if (*s == 29) { s -= 11; /* Backup to non-leap Feb. */ } ++s; --d; } #ifdef __BCC__ d = p[5] - 1; days = -719163L + ((long)d)*365 + ((d/4) - (d/100) + (d/400) + p[3] + p[7]); secs = p[0] + 60*( p[1] + 60*((long)(p[2])) ) + _time_tzinfo[default_dst].gmt_offset; DST_CORRECT: if (secs < 0) { secs += 120009600L; days -= 1389; } if ( ((unsigned long)(days + secs/86400L)) > 49710L) { t = ((time_t)(-1)); goto DONE; } secs += (days * 86400L); #else d = p[5] - 1; d = -719163L + d*365 + (d/4) - (d/100) + (d/400); secs = p[0] + _time_tzinfo[default_dst].gmt_offset + 60*( p[1] + 60*(p[2] + 24*(((146073L * ((long long)(p[6])) + d) + p[3]) + p[7]))); DST_CORRECT: if (((unsigned long long)(secs - LONG_MIN)) > (((unsigned long long)LONG_MAX) - LONG_MIN) ) { t = ((time_t)(-1)); goto DONE; } #endif d = ((struct tm *)p)->tm_isdst; t = secs; localtime_r(&t, (struct tm *)p); if (t == ((time_t)(-1))) { /* Remember, time_t can be unsigned. */ goto DONE; } if ((d < 0) && (((struct tm *)p)->tm_isdst != default_dst)) { #ifdef __BCC__ secs -= (days * 86400L); #endif secs += (_time_tzinfo[1-default_dst].gmt_offset - _time_tzinfo[default_dst].gmt_offset); goto DST_CORRECT; } if (store_on_success) { memcpy(timeptr, p, sizeof(struct tm)); } DONE: TZUNLOCK; return t; } #endif /**********************************************************************/ #ifdef L_dysize /* Return the number of days in YEAR. */ int dysize(int year) { return __isleap(year) ? 366 : 365; } #endif /**********************************************************************/ /* Like `mktime', but for TP represents Universal Time, not local time. */ /* time_t timegm(struct tm *tp) */