1#ifndef PRIVATE_H 2 3#define PRIVATE_H 4 5/* 6** This file is in the public domain, so clarified as of 7** 1996-06-05 by Arthur David Olson. 8*/ 9 10/* 11** This header is for use ONLY with the time conversion code. 12** There is no guarantee that it will remain unchanged, 13** or that it will remain at all. 14** Do NOT copy it to any system include directory. 15** Thank you! 16*/ 17 18#define GRANDPARENTED "Local time zone must be set--see zic manual page" 19 20/* 21** Defaults for preprocessor symbols. 22** You can override these in your C compiler options, e.g. '-DHAVE_ADJTIME=0'. 23*/ 24 25#ifndef HAVE_ADJTIME 26#define HAVE_ADJTIME 1 27#endif /* !defined HAVE_ADJTIME */ 28 29#ifndef HAVE_GETTEXT 30#define HAVE_GETTEXT 0 31#endif /* !defined HAVE_GETTEXT */ 32 33#ifndef HAVE_INCOMPATIBLE_CTIME_R 34#define HAVE_INCOMPATIBLE_CTIME_R 0 35#endif /* !defined INCOMPATIBLE_CTIME_R */ 36 37#ifndef HAVE_LINK 38#define HAVE_LINK 1 39#endif /* !defined HAVE_LINK */ 40 41#ifndef HAVE_SETTIMEOFDAY 42#define HAVE_SETTIMEOFDAY 3 43#endif /* !defined HAVE_SETTIMEOFDAY */ 44 45#ifndef HAVE_SYMLINK 46#define HAVE_SYMLINK 1 47#endif /* !defined HAVE_SYMLINK */ 48 49#ifndef HAVE_SYS_STAT_H 50#define HAVE_SYS_STAT_H 1 51#endif /* !defined HAVE_SYS_STAT_H */ 52 53#ifndef HAVE_SYS_WAIT_H 54#define HAVE_SYS_WAIT_H 1 55#endif /* !defined HAVE_SYS_WAIT_H */ 56 57#ifndef HAVE_UNISTD_H 58#define HAVE_UNISTD_H 1 59#endif /* !defined HAVE_UNISTD_H */ 60 61#ifndef HAVE_UTMPX_H 62#define HAVE_UTMPX_H 0 63#endif /* !defined HAVE_UTMPX_H */ 64 65#if !defined(__ANDROID__) 66#ifndef LOCALE_HOME 67#define LOCALE_HOME "/usr/lib/locale" 68#endif /* !defined LOCALE_HOME */ 69#endif // __ANDROID__ 70 71#if HAVE_INCOMPATIBLE_CTIME_R 72#define asctime_r _incompatible_asctime_r 73#define ctime_r _incompatible_ctime_r 74#endif /* HAVE_INCOMPATIBLE_CTIME_R */ 75 76/* 77** Nested includes 78*/ 79 80#include "sys/types.h" /* for time_t */ 81#include "stdio.h" 82#include "errno.h" 83#include "string.h" 84#include "limits.h" /* for CHAR_BIT et al. */ 85#include "time.h" 86#include "stdlib.h" 87 88#if HAVE_GETTEXT 89#include "libintl.h" 90#endif /* HAVE_GETTEXT */ 91 92#if HAVE_SYS_WAIT_H 93#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 94#endif /* HAVE_SYS_WAIT_H */ 95 96#ifndef WIFEXITED 97#define WIFEXITED(status) (((status) & 0xff) == 0) 98#endif /* !defined WIFEXITED */ 99#ifndef WEXITSTATUS 100#define WEXITSTATUS(status) (((status) >> 8) & 0xff) 101#endif /* !defined WEXITSTATUS */ 102 103#if HAVE_UNISTD_H 104#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 105#endif /* HAVE_UNISTD_H */ 106 107#ifndef F_OK 108#define F_OK 0 109#endif /* !defined F_OK */ 110#ifndef R_OK 111#define R_OK 4 112#endif /* !defined R_OK */ 113 114/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 115#define is_digit(c) ((unsigned)(c) - '0' <= 9) 116 117/* 118** Define HAVE_STDINT_H's default value here, rather than at the 119** start, since __GLIBC__'s value depends on previously-included 120** files. 121** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) 122*/ 123#ifndef HAVE_STDINT_H 124#define HAVE_STDINT_H \ 125 (199901 <= __STDC_VERSION__ \ 126 || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \ 127 || __CYGWIN__) 128#endif /* !defined HAVE_STDINT_H */ 129 130#if HAVE_STDINT_H 131#include "stdint.h" 132#endif /* !HAVE_STDINT_H */ 133 134#ifndef HAVE_INTTYPES_H 135# define HAVE_INTTYPES_H HAVE_STDINT_H 136#endif 137#if HAVE_INTTYPES_H 138# include <inttypes.h> 139#endif 140 141#ifndef INT_FAST64_MAX 142/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 143#if defined LLONG_MAX || defined __LONG_LONG_MAX__ 144typedef long long int_fast64_t; 145# ifdef LLONG_MAX 146# define INT_FAST64_MIN LLONG_MIN 147# define INT_FAST64_MAX LLONG_MAX 148# else 149# define INT_FAST64_MIN __LONG_LONG_MIN__ 150# define INT_FAST64_MAX __LONG_LONG_MAX__ 151# endif 152# define SCNdFAST64 "lld" 153#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */ 154#if (LONG_MAX >> 31) < 0xffffffff 155Please use a compiler that supports a 64-bit integer type (or wider); 156you may need to compile with "-DHAVE_STDINT_H". 157#endif /* (LONG_MAX >> 31) < 0xffffffff */ 158typedef long int_fast64_t; 159# define INT_FAST64_MIN LONG_MIN 160# define INT_FAST64_MAX LONG_MAX 161# define SCNdFAST64 "ld" 162#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */ 163#endif /* !defined INT_FAST64_MAX */ 164 165#ifndef INT_FAST32_MAX 166# if INT_MAX >> 31 == 0 167typedef long int_fast32_t; 168# else 169typedef int int_fast32_t; 170# endif 171#endif 172 173#ifndef INTMAX_MAX 174# if defined LLONG_MAX || defined __LONG_LONG_MAX__ 175typedef long long intmax_t; 176# define strtoimax strtoll 177# define PRIdMAX "lld" 178# ifdef LLONG_MAX 179# define INTMAX_MAX LLONG_MAX 180# define INTMAX_MIN LLONG_MIN 181# else 182# define INTMAX_MAX __LONG_LONG_MAX__ 183# define INTMAX_MIN __LONG_LONG_MIN__ 184# endif 185# else 186typedef long intmax_t; 187# define strtoimax strtol 188# define PRIdMAX "ld" 189# define INTMAX_MAX LONG_MAX 190# define INTMAX_MIN LONG_MIN 191# endif 192#endif 193 194#ifndef UINTMAX_MAX 195# if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 196typedef unsigned long long uintmax_t; 197# define PRIuMAX "llu" 198# else 199typedef unsigned long uintmax_t; 200# define PRIuMAX "lu" 201# endif 202#endif 203 204#ifndef INT32_MAX 205#define INT32_MAX 0x7fffffff 206#endif /* !defined INT32_MAX */ 207#ifndef INT32_MIN 208#define INT32_MIN (-1 - INT32_MAX) 209#endif /* !defined INT32_MIN */ 210 211#ifndef SIZE_MAX 212#define SIZE_MAX ((size_t) -1) 213#endif 214 215#if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 216# define ATTRIBUTE_CONST __attribute__ ((const)) 217# define ATTRIBUTE_PURE __attribute__ ((__pure__)) 218# define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 219#else 220# define ATTRIBUTE_CONST /* empty */ 221# define ATTRIBUTE_PURE /* empty */ 222# define ATTRIBUTE_FORMAT(spec) /* empty */ 223#endif 224 225#if !defined _Noreturn && __STDC_VERSION__ < 201112 226# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 227# define _Noreturn __attribute__ ((__noreturn__)) 228# else 229# define _Noreturn 230# endif 231#endif 232 233#if __STDC_VERSION__ < 199901 && !defined restrict 234# define restrict /* empty */ 235#endif 236 237/* 238** Workarounds for compilers/systems. 239*/ 240 241/* 242** Some time.h implementations don't declare asctime_r. 243** Others might define it as a macro. 244** Fix the former without affecting the latter. 245*/ 246 247#ifndef asctime_r 248extern char * asctime_r(struct tm const *, char *); 249#endif 250 251/* 252** Compile with -Dtime_tz=T to build the tz package with a private 253** time_t type equivalent to T rather than the system-supplied time_t. 254** This debugging feature can test unusual design decisions 255** (e.g., time_t wider than 'long', or unsigned time_t) even on 256** typical platforms. 257*/ 258#ifdef time_tz 259static time_t sys_time(time_t *x) { return time(x); } 260 261# undef ctime 262# define ctime tz_ctime 263# undef ctime_r 264# define ctime_r tz_ctime_r 265# undef difftime 266# define difftime tz_difftime 267# undef gmtime 268# define gmtime tz_gmtime 269# undef gmtime_r 270# define gmtime_r tz_gmtime_r 271# undef localtime 272# define localtime tz_localtime 273# undef localtime_r 274# define localtime_r tz_localtime_r 275# undef mktime 276# define mktime tz_mktime 277# undef time 278# define time tz_time 279# undef time_t 280# define time_t tz_time_t 281 282typedef time_tz time_t; 283 284char *ctime(time_t const *); 285char *ctime_r(time_t const *, char *); 286double difftime(time_t, time_t); 287struct tm *gmtime(time_t const *); 288struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 289struct tm *localtime(time_t const *); 290struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 291time_t mktime(struct tm *); 292 293static time_t 294time(time_t *p) 295{ 296 time_t r = sys_time(0); 297 if (p) 298 *p = r; 299 return r; 300} 301#endif 302 303/* 304** Private function declarations. 305*/ 306 307char * icatalloc(char * old, const char * new); 308char * icpyalloc(const char * string); 309const char * scheck(const char * string, const char * format); 310 311/* 312** Finally, some convenience items. 313*/ 314 315#ifndef TRUE 316#define TRUE 1 317#endif /* !defined TRUE */ 318 319#ifndef FALSE 320#define FALSE 0 321#endif /* !defined FALSE */ 322 323#ifndef TYPE_BIT 324#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 325#endif /* !defined TYPE_BIT */ 326 327#ifndef TYPE_SIGNED 328#define TYPE_SIGNED(type) (((type) -1) < 0) 329#endif /* !defined TYPE_SIGNED */ 330 331/* The minimum and maximum finite time values. */ 332static time_t const time_t_min = 333 (TYPE_SIGNED(time_t) 334 ? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1) 335 : 0); 336static time_t const time_t_max = 337 (TYPE_SIGNED(time_t) 338 ? - (~ 0 < 0) - ((time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1)) 339 : -1); 340 341#ifndef INT_STRLEN_MAXIMUM 342/* 343** 302 / 1000 is log10(2.0) rounded up. 344** Subtract one for the sign bit if the type is signed; 345** add one for integer division truncation; 346** add one more for a minus sign if the type is signed. 347*/ 348#define INT_STRLEN_MAXIMUM(type) \ 349 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 350 1 + TYPE_SIGNED(type)) 351#endif /* !defined INT_STRLEN_MAXIMUM */ 352 353/* 354** INITIALIZE(x) 355*/ 356 357#ifdef lint 358# define INITIALIZE(x) ((x) = 0) 359#else 360# define INITIALIZE(x) 361#endif 362 363/* 364** For the benefit of GNU folk... 365** '_(MSGID)' uses the current locale's message library string for MSGID. 366** The default is to use gettext if available, and use MSGID otherwise. 367*/ 368 369#ifndef _ 370#if HAVE_GETTEXT 371#define _(msgid) gettext(msgid) 372#else /* !HAVE_GETTEXT */ 373#define _(msgid) msgid 374#endif /* !HAVE_GETTEXT */ 375#endif /* !defined _ */ 376 377#if !defined TZ_DOMAIN && defined TZ_DOMAINDIR 378# define TZ_DOMAIN "tz" 379#endif 380 381#if HAVE_INCOMPATIBLE_CTIME_R 382#undef asctime_r 383#undef ctime_r 384char *asctime_r(struct tm const *, char *); 385char *ctime_r(time_t const *, char *); 386#endif /* HAVE_INCOMPATIBLE_CTIME_R */ 387 388#ifndef YEARSPERREPEAT 389#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 390#endif /* !defined YEARSPERREPEAT */ 391 392/* 393** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 394*/ 395 396#ifndef AVGSECSPERYEAR 397#define AVGSECSPERYEAR 31556952L 398#endif /* !defined AVGSECSPERYEAR */ 399 400#ifndef SECSPERREPEAT 401#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 402#endif /* !defined SECSPERREPEAT */ 403 404#ifndef SECSPERREPEAT_BITS 405#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 406#endif /* !defined SECSPERREPEAT_BITS */ 407 408/* 409** UNIX was a registered trademark of The Open Group in 2003. 410*/ 411 412#endif /* !defined PRIVATE_H */ 413