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__ 144 typedef 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 155 Please use a compiler that supports a 64-bit integer type (or wider); 156 you may need to compile with "-DHAVE_STDINT_H". 157 #endif /* (LONG_MAX >> 31) < 0xffffffff */ 158 typedef 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 == 0 167 typedef long int_fast32_t; 168 # else 169 typedef int int_fast32_t; 170 # endif 171 #endif 172 173 #ifndef INTMAX_MAX 174 # if defined LLONG_MAX || defined __LONG_LONG_MAX__ 175 typedef 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 186 typedef 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__ 196 typedef unsigned long long uintmax_t; 197 # define PRIuMAX "llu" 198 # else 199 typedef 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 248 extern 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 259 static 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 281 282 typedef time_tz time_t; 283 284 char *ctime(time_t const *); 285 char *ctime_r(time_t const *, char *); 286 double difftime(time_t, time_t); 287 struct tm *gmtime(time_t const *); 288 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 289 struct tm *localtime(time_t const *); 290 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 291 time_t mktime(struct tm *); 292 293 static time_t 294 time(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 */ 306 307 char * icatalloc(char * old, const char * new); 308 char * icpyalloc(const char * string); 309 const 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. */ 332 static time_t const time_t_min = 333 (TYPE_SIGNED(time_t) 334 ? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1) 335 : 0); 336 static 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 384 char *asctime_r(struct tm const *, char *); 385 char *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
