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 #ifndef LOCALE_HOME 66 #define LOCALE_HOME "/usr/lib/locale" 67 #endif /* !defined LOCALE_HOME */ 68 69 #if HAVE_INCOMPATIBLE_CTIME_R 70 #define asctime_r _incompatible_asctime_r 71 #define ctime_r _incompatible_ctime_r 72 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 73 74 /* 75 ** Nested includes 76 */ 77 78 #include "sys/types.h" /* for time_t */ 79 #include "stdio.h" 80 #include "errno.h" 81 #include "string.h" 82 #include "limits.h" /* for CHAR_BIT et al. */ 83 #include "time.h" 84 #include "stdlib.h" 85 86 #if HAVE_GETTEXT 87 #include "libintl.h" 88 #endif /* HAVE_GETTEXT */ 89 90 #if HAVE_SYS_WAIT_H 91 #include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 92 #endif /* HAVE_SYS_WAIT_H */ 93 94 #ifndef WIFEXITED 95 #define WIFEXITED(status) (((status) & 0xff) == 0) 96 #endif /* !defined WIFEXITED */ 97 #ifndef WEXITSTATUS 98 #define WEXITSTATUS(status) (((status) >> 8) & 0xff) 99 #endif /* !defined WEXITSTATUS */ 100 101 #if HAVE_UNISTD_H 102 #include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 103 #endif /* HAVE_UNISTD_H */ 104 105 #ifndef F_OK 106 #define F_OK 0 107 #endif /* !defined F_OK */ 108 #ifndef R_OK 109 #define R_OK 4 110 #endif /* !defined R_OK */ 111 112 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 113 #define is_digit(c) ((unsigned)(c) - '0' <= 9) 114 115 /* 116 ** Define HAVE_STDINT_H's default value here, rather than at the 117 ** start, since __GLIBC__'s value depends on previously-included 118 ** files. 119 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) 120 */ 121 #ifndef HAVE_STDINT_H 122 #define HAVE_STDINT_H \ 123 (199901 <= __STDC_VERSION__ || \ 124 2 < (__GLIBC__ + (0 < __GLIBC_MINOR__))) 125 #endif /* !defined HAVE_STDINT_H */ 126 127 #if HAVE_STDINT_H 128 #include "stdint.h" 129 #endif /* !HAVE_STDINT_H */ 130 131 #ifndef HAVE_INTTYPES_H 132 # define HAVE_INTTYPES_H HAVE_STDINT_H 133 #endif 134 #if HAVE_INTTYPES_H 135 # include <inttypes.h> 136 #endif 137 138 #ifndef INT_FAST64_MAX 139 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 140 #if defined LLONG_MAX || defined __LONG_LONG_MAX__ 141 typedef long long int_fast64_t; 142 # ifdef LLONG_MAX 143 # define INT_FAST64_MIN LLONG_MIN 144 # define INT_FAST64_MAX LLONG_MAX 145 # else 146 # define INT_FAST64_MIN __LONG_LONG_MIN__ 147 # define INT_FAST64_MAX __LONG_LONG_MAX__ 148 # endif 149 # define SCNdFAST64 "lld" 150 #else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */ 151 #if (LONG_MAX >> 31) < 0xffffffff 152 Please use a compiler that supports a 64-bit integer type (or wider); 153 you may need to compile with "-DHAVE_STDINT_H". 154 #endif /* (LONG_MAX >> 31) < 0xffffffff */ 155 typedef long int_fast64_t; 156 # define INT_FAST64_MIN LONG_MIN 157 # define INT_FAST64_MAX LONG_MAX 158 # define SCNdFAST64 "ld" 159 #endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */ 160 #endif /* !defined INT_FAST64_MAX */ 161 162 #ifndef INT_FAST32_MAX 163 # if INT_MAX >> 31 == 0 164 typedef long int_fast32_t; 165 # else 166 typedef int int_fast32_t; 167 # endif 168 #endif 169 170 #ifndef INTMAX_MAX 171 # if defined LLONG_MAX || defined __LONG_LONG_MAX__ 172 typedef long long intmax_t; 173 # define strtoimax strtoll 174 # define PRIdMAX "lld" 175 # ifdef LLONG_MAX 176 # define INTMAX_MAX LLONG_MAX 177 # define INTMAX_MIN LLONG_MIN 178 # else 179 # define INTMAX_MAX __LONG_LONG_MAX__ 180 # define INTMAX_MIN __LONG_LONG_MIN__ 181 # endif 182 # else 183 typedef long intmax_t; 184 # define strtoimax strtol 185 # define PRIdMAX "ld" 186 # define INTMAX_MAX LONG_MAX 187 # define INTMAX_MIN LONG_MIN 188 # endif 189 #endif 190 191 #ifndef UINTMAX_MAX 192 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 193 typedef unsigned long long uintmax_t; 194 # define PRIuMAX "llu" 195 # else 196 typedef unsigned long uintmax_t; 197 # define PRIuMAX "lu" 198 # endif 199 #endif 200 201 #ifndef INT32_MAX 202 #define INT32_MAX 0x7fffffff 203 #endif /* !defined INT32_MAX */ 204 #ifndef INT32_MIN 205 #define INT32_MIN (-1 - INT32_MAX) 206 #endif /* !defined INT32_MIN */ 207 208 #ifndef SIZE_MAX 209 #define SIZE_MAX ((size_t) -1) 210 #endif 211 212 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 213 # define ATTRIBUTE_CONST __attribute__ ((const)) 214 # define ATTRIBUTE_PURE __attribute__ ((__pure__)) 215 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 216 #else 217 # define ATTRIBUTE_CONST /* empty */ 218 # define ATTRIBUTE_PURE /* empty */ 219 # define ATTRIBUTE_FORMAT(spec) /* empty */ 220 #endif 221 222 #if !defined _Noreturn && __STDC_VERSION__ < 201112 223 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 224 # define _Noreturn __attribute__ ((__noreturn__)) 225 # else 226 # define _Noreturn 227 # endif 228 #endif 229 230 #if __STDC_VERSION__ < 199901 && !defined restrict 231 # define restrict /* empty */ 232 #endif 233 234 /* 235 ** Workarounds for compilers/systems. 236 */ 237 238 /* 239 ** Some time.h implementations don't declare asctime_r. 240 ** Others might define it as a macro. 241 ** Fix the former without affecting the latter. 242 */ 243 244 #ifndef asctime_r 245 extern char * asctime_r(struct tm const *, char *); 246 #endif 247 248 /* 249 ** Compile with -Dtime_tz=T to build the tz package with a private 250 ** time_t type equivalent to T rather than the system-supplied time_t. 251 ** This debugging feature can test unusual design decisions 252 ** (e.g., time_t wider than 'long', or unsigned time_t) even on 253 ** typical platforms. 254 */ 255 #ifdef time_tz 256 static time_t sys_time(time_t *x) { return time(x); } 257 258 # undef ctime 259 # define ctime tz_ctime 260 # undef ctime_r 261 # define ctime_r tz_ctime_r 262 # undef difftime 263 # define difftime tz_difftime 264 # undef gmtime 265 # define gmtime tz_gmtime 266 # undef gmtime_r 267 # define gmtime_r tz_gmtime_r 268 # undef localtime 269 # define localtime tz_localtime 270 # undef localtime_r 271 # define localtime_r tz_localtime_r 272 # undef mktime 273 # define mktime tz_mktime 274 # undef time 275 # define time tz_time 276 # undef time_t 277 # define time_t tz_time_t 278 279 typedef time_tz time_t; 280 281 char *ctime(time_t const *); 282 char *ctime_r(time_t const *, char *); 283 double difftime(time_t, time_t); 284 struct tm *gmtime(time_t const *); 285 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 286 struct tm *localtime(time_t const *); 287 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 288 time_t mktime(struct tm *); 289 290 static time_t 291 time(time_t *p) 292 { 293 time_t r = sys_time(0); 294 if (p) 295 *p = r; 296 return r; 297 } 298 #endif 299 300 /* 301 ** Private function declarations. 302 */ 303 304 char * icatalloc(char * old, const char * new); 305 char * icpyalloc(const char * string); 306 const char * scheck(const char * string, const char * format); 307 308 /* 309 ** Finally, some convenience items. 310 */ 311 312 #ifndef TRUE 313 #define TRUE 1 314 #endif /* !defined TRUE */ 315 316 #ifndef FALSE 317 #define FALSE 0 318 #endif /* !defined FALSE */ 319 320 #ifndef TYPE_BIT 321 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 322 #endif /* !defined TYPE_BIT */ 323 324 #ifndef TYPE_SIGNED 325 #define TYPE_SIGNED(type) (((type) -1) < 0) 326 #endif /* !defined TYPE_SIGNED */ 327 328 /* The minimum and maximum finite time values. */ 329 static time_t const time_t_min = 330 (TYPE_SIGNED(time_t) 331 ? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1) 332 : 0); 333 static time_t const time_t_max = 334 (TYPE_SIGNED(time_t) 335 ? - (~ 0 < 0) - ((time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1)) 336 : -1); 337 338 #ifndef INT_STRLEN_MAXIMUM 339 /* 340 ** 302 / 1000 is log10(2.0) rounded up. 341 ** Subtract one for the sign bit if the type is signed; 342 ** add one for integer division truncation; 343 ** add one more for a minus sign if the type is signed. 344 */ 345 #define INT_STRLEN_MAXIMUM(type) \ 346 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 347 1 + TYPE_SIGNED(type)) 348 #endif /* !defined INT_STRLEN_MAXIMUM */ 349 350 /* 351 ** INITIALIZE(x) 352 */ 353 354 #ifndef GNUC_or_lint 355 #ifdef lint 356 #define GNUC_or_lint 357 #endif /* defined lint */ 358 #ifndef lint 359 #ifdef __GNUC__ 360 #define GNUC_or_lint 361 #endif /* defined __GNUC__ */ 362 #endif /* !defined lint */ 363 #endif /* !defined GNUC_or_lint */ 364 365 #ifndef INITIALIZE 366 #ifdef GNUC_or_lint 367 #define INITIALIZE(x) ((x) = 0) 368 #endif /* defined GNUC_or_lint */ 369 #ifndef GNUC_or_lint 370 #define INITIALIZE(x) 371 #endif /* !defined GNUC_or_lint */ 372 #endif /* !defined INITIALIZE */ 373 374 /* 375 ** For the benefit of GNU folk... 376 ** `_(MSGID)' uses the current locale's message library string for MSGID. 377 ** The default is to use gettext if available, and use MSGID otherwise. 378 */ 379 380 #ifndef _ 381 #if HAVE_GETTEXT 382 #define _(msgid) gettext(msgid) 383 #else /* !HAVE_GETTEXT */ 384 #define _(msgid) msgid 385 #endif /* !HAVE_GETTEXT */ 386 #endif /* !defined _ */ 387 388 #ifndef TZ_DOMAIN 389 #define TZ_DOMAIN "tz" 390 #endif /* !defined TZ_DOMAIN */ 391 392 #if HAVE_INCOMPATIBLE_CTIME_R 393 #undef asctime_r 394 #undef ctime_r 395 char *asctime_r(struct tm const *, char *); 396 char *ctime_r(time_t const *, char *); 397 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 398 399 #ifndef YEARSPERREPEAT 400 #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 401 #endif /* !defined YEARSPERREPEAT */ 402 403 /* 404 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 405 */ 406 407 #ifndef AVGSECSPERYEAR 408 #define AVGSECSPERYEAR 31556952L 409 #endif /* !defined AVGSECSPERYEAR */ 410 411 #ifndef SECSPERREPEAT 412 #define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 413 #endif /* !defined SECSPERREPEAT */ 414 415 #ifndef SECSPERREPEAT_BITS 416 #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 417 #endif /* !defined SECSPERREPEAT_BITS */ 418 419 /* 420 ** UNIX was a registered trademark of The Open Group in 2003. 421 */ 422 423 #endif /* !defined PRIVATE_H */ 424
