1 /* $NetBSD: private.h,v 1.32 2013/12/26 18:34:28 christos Exp $ */ 2 3 #ifndef PRIVATE_H 4 #define PRIVATE_H 5 6 /* NetBSD defaults */ 7 #define TM_GMTOFF tm_gmtoff 8 #define TM_ZONE tm_zone 9 #define STD_INSPIRED 1 10 #define HAVE_LONG_DOUBLE 1 11 12 /* For when we build zic as a host tool. */ 13 #if HAVE_NBTOOL_CONFIG_H 14 #include "nbtool_config.h" 15 #endif 16 17 /* 18 ** This file is in the public domain, so clarified as of 19 ** 1996-06-05 by Arthur David Olson. 20 */ 21 22 /* 23 ** This header is for use ONLY with the time conversion code. 24 ** There is no guarantee that it will remain unchanged, 25 ** or that it will remain at all. 26 ** Do NOT copy it to any system include directory. 27 ** Thank you! 28 */ 29 30 #define GRANDPARENTED "Local time zone must be set--see zic manual page" 31 32 /* 33 ** Defaults for preprocessor symbols. 34 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'. 35 */ 36 37 #ifndef HAVE_ADJTIME 38 #define HAVE_ADJTIME 1 39 #endif /* !defined HAVE_ADJTIME */ 40 41 #ifndef HAVE_GETTEXT 42 #define HAVE_GETTEXT 0 43 #endif /* !defined HAVE_GETTEXT */ 44 45 #ifndef HAVE_INCOMPATIBLE_CTIME_R 46 #define HAVE_INCOMPATIBLE_CTIME_R 0 47 #endif /* !defined INCOMPATIBLE_CTIME_R */ 48 49 #ifndef HAVE_LINK 50 #define HAVE_LINK 1 51 #endif /* !defined HAVE_LINK */ 52 53 #ifndef HAVE_SETTIMEOFDAY 54 #define HAVE_SETTIMEOFDAY 3 55 #endif /* !defined HAVE_SETTIMEOFDAY */ 56 57 #ifndef HAVE_SYMLINK 58 #define HAVE_SYMLINK 1 59 #endif /* !defined HAVE_SYMLINK */ 60 61 #ifndef HAVE_SYS_STAT_H 62 #define HAVE_SYS_STAT_H 1 63 #endif /* !defined HAVE_SYS_STAT_H */ 64 65 #ifndef HAVE_SYS_WAIT_H 66 #define HAVE_SYS_WAIT_H 1 67 #endif /* !defined HAVE_SYS_WAIT_H */ 68 69 #ifndef HAVE_UNISTD_H 70 #define HAVE_UNISTD_H 1 71 #endif /* !defined HAVE_UNISTD_H */ 72 73 #ifndef HAVE_UTMPX_H 74 #define HAVE_UTMPX_H 0 75 #endif /* !defined HAVE_UTMPX_H */ 76 77 #ifdef LOCALE_HOME 78 #undef LOCALE_HOME /* not to be handled by tzcode itself */ 79 #endif /* defined LOCALE_HOME */ 80 81 #if HAVE_INCOMPATIBLE_CTIME_R 82 #define asctime_r _incompatible_asctime_r 83 #define ctime_r _incompatible_ctime_r 84 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 85 86 /* 87 ** Nested includes 88 */ 89 90 #include "sys/types.h" /* for time_t */ 91 #include "stdio.h" 92 #include "errno.h" 93 #include "string.h" 94 #include "limits.h" /* for CHAR_BIT et al. */ 95 #include "time.h" 96 #include "stdlib.h" 97 98 #if HAVE_GETTEXT 99 #include "libintl.h" 100 #endif /* HAVE_GETTEXT */ 101 102 #if HAVE_SYS_WAIT_H 103 #include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */ 104 #endif /* HAVE_SYS_WAIT_H */ 105 106 #ifndef WIFEXITED 107 #define WIFEXITED(status) (((status) & 0xff) == 0) 108 #endif /* !defined WIFEXITED */ 109 #ifndef WEXITSTATUS 110 #define WEXITSTATUS(status) (((status) >> 8) & 0xff) 111 #endif /* !defined WEXITSTATUS */ 112 113 #if HAVE_UNISTD_H 114 #include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */ 115 #endif /* HAVE_UNISTD_H */ 116 117 #ifndef F_OK 118 #define F_OK 0 119 #endif /* !defined F_OK */ 120 #ifndef R_OK 121 #define R_OK 4 122 #endif /* !defined R_OK */ 123 124 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */ 125 #define is_digit(c) ((unsigned)(c) - '0' <= 9) 126 127 /* 128 ** Define HAVE_STDINT_H's default value here, rather than at the 129 ** start, since __GLIBC__'s value depends on previously-included 130 ** files. 131 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.) 132 */ 133 #ifndef HAVE_STDINT_H 134 #define HAVE_STDINT_H \ 135 (199901 <= __STDC_VERSION__ || \ 136 2 < (__GLIBC__ + (0 < __GLIBC_MINOR__))) 137 #endif /* !defined HAVE_STDINT_H */ 138 139 #if HAVE_STDINT_H 140 #include "stdint.h" 141 #endif /* !HAVE_STDINT_H */ 142 143 #ifndef HAVE_INTTYPES_H 144 # define HAVE_INTTYPES_H HAVE_STDINT_H 145 #endif 146 #if HAVE_INTTYPES_H 147 # include <inttypes.h> 148 #endif 149 150 #ifndef INT_FAST64_MAX 151 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */ 152 #if defined LLONG_MAX || defined __LONG_LONG_MAX__ 153 typedef long long int_fast64_t; 154 # ifdef LLONG_MAX 155 # define INT_FAST64_MIN LLONG_MIN 156 # define INT_FAST64_MAX LLONG_MAX 157 # else 158 # define INT_FAST64_MIN __LONG_LONG_MIN__ 159 # define INT_FAST64_MAX __LONG_LONG_MAX__ 160 # endif 161 # define SCNdFAST64 "lld" 162 #else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */ 163 #if (LONG_MAX >> 31) < 0xffffffff 164 Please use a compiler that supports a 64-bit integer type (or wider); 165 you may need to compile with "-DHAVE_STDINT_H". 166 #endif /* (LONG_MAX >> 31) < 0xffffffff */ 167 typedef long int_fast64_t; 168 # define INT_FAST64_MIN LONG_MIN 169 # define INT_FAST64_MAX LONG_MAX 170 # define SCNdFAST64 "ld" 171 #endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */ 172 #endif /* !defined INT_FAST64_MAX */ 173 174 #ifndef INT_FAST32_MAX 175 # if INT_MAX >> 31 == 0 176 typedef long int_fast32_t; 177 # else 178 typedef int int_fast32_t; 179 # endif 180 #endif 181 182 #ifndef INTMAX_MAX 183 # if defined LLONG_MAX || defined __LONG_LONG_MAX__ 184 typedef long long intmax_t; 185 # define strtoimax strtoll 186 # define PRIdMAX "lld" 187 # ifdef LLONG_MAX 188 # define INTMAX_MAX LLONG_MAX 189 # define INTMAX_MIN LLONG_MIN 190 # else 191 # define INTMAX_MAX __LONG_LONG_MAX__ 192 # define INTMAX_MIN __LONG_LONG_MIN__ 193 # endif 194 # else 195 typedef long intmax_t; 196 # define strtoimax strtol 197 # define PRIdMAX "ld" 198 # define INTMAX_MAX LONG_MAX 199 # define INTMAX_MIN LONG_MIN 200 # endif 201 #endif 202 203 #ifndef UINTMAX_MAX 204 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__ 205 typedef unsigned long long uintmax_t; 206 # define PRIuMAX "llu" 207 # else 208 typedef unsigned long uintmax_t; 209 # define PRIuMAX "lu" 210 # endif 211 #endif 212 213 #ifndef INT32_MAX 214 #define INT32_MAX 0x7fffffff 215 #endif /* !defined INT32_MAX */ 216 #ifndef INT32_MIN 217 #define INT32_MIN (-1 - INT32_MAX) 218 #endif /* !defined INT32_MIN */ 219 220 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__) 221 # define ATTRIBUTE_CONST __attribute__ ((__const__)) 222 # define ATTRIBUTE_PURE __attribute__ ((__pure__)) 223 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec)) 224 #else 225 # define ATTRIBUTE_CONST /* empty */ 226 # define ATTRIBUTE_PURE /* empty */ 227 # define ATTRIBUTE_FORMAT(spec) /* empty */ 228 #endif 229 230 #if !defined _Noreturn && __STDC_VERSION__ < 201112 231 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__) 232 # define _Noreturn __attribute__ ((__noreturn__)) 233 # else 234 # define _Noreturn 235 # endif 236 #endif 237 238 #if __STDC_VERSION__ < 199901 && !defined restrict 239 # define restrict /* empty */ 240 #endif 241 242 /* 243 ** Workarounds for compilers/systems. 244 */ 245 246 /* 247 ** Some time.h implementations don't declare asctime_r. 248 ** Others might define it as a macro. 249 ** Fix the former without affecting the latter. 250 */ 251 252 #ifndef asctime_r 253 extern char * asctime_r(struct tm const *, char *); 254 #endif 255 256 /* 257 ** Compile with -Dtime_tz=T to build the tz package with a private 258 ** time_t type equivalent to T rather than the system-supplied time_t. 259 ** This debugging feature can test unusual design decisions 260 ** (e.g., time_t wider than 'long', or unsigned time_t) even on 261 ** typical platforms. 262 */ 263 #ifdef time_tz 264 static time_t sys_time(time_t *x) { return time(x); } 265 266 # undef ctime 267 # define ctime tz_ctime 268 # undef ctime_r 269 # define ctime_r tz_ctime_r 270 # undef difftime 271 # define difftime tz_difftime 272 # undef gmtime 273 # define gmtime tz_gmtime 274 # undef gmtime_r 275 # define gmtime_r tz_gmtime_r 276 # undef localtime 277 # define localtime tz_localtime 278 # undef localtime_r 279 # define localtime_r tz_localtime_r 280 # undef mktime 281 # define mktime tz_mktime 282 # undef time 283 # define time tz_time 284 # undef time_t 285 # define time_t tz_time_t 286 287 typedef time_tz time_t; 288 289 char *ctime(time_t const *); 290 char *ctime_r(time_t const *, char *); 291 double difftime(time_t, time_t); 292 struct tm *gmtime(time_t const *); 293 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict); 294 struct tm *localtime(time_t const *); 295 struct tm *localtime_r(time_t const *restrict, struct tm *restrict); 296 time_t mktime(struct tm *); 297 298 static time_t 299 time(time_t *p) 300 { 301 time_t r = sys_time(0); 302 if (p) 303 *p = r; 304 return r; 305 } 306 #endif 307 308 /* 309 ** Private function declarations. 310 */ 311 312 char * icatalloc(char * old, const char * new); 313 char * icpyalloc(const char * string); 314 const char * scheck(const char * string, const char * format); 315 316 /* 317 ** Finally, some convenience items. 318 */ 319 320 #ifndef TRUE 321 #define TRUE 1 322 #endif /* !defined TRUE */ 323 324 #ifndef FALSE 325 #define FALSE 0 326 #endif /* !defined FALSE */ 327 328 #ifndef TYPE_BIT 329 #define TYPE_BIT(type) (sizeof (type) * CHAR_BIT) 330 #endif /* !defined TYPE_BIT */ 331 332 #ifndef TYPE_SIGNED 333 #define TYPE_SIGNED(type) (/*CONSTCOND*/((type) -1) < 0) 334 #endif /* !defined TYPE_SIGNED */ 335 336 #ifndef INT_STRLEN_MAXIMUM 337 /* 338 ** 302 / 1000 is log10(2.0) rounded up. 339 ** Subtract one for the sign bit if the type is signed; 340 ** add one for integer division truncation; 341 ** add one more for a minus sign if the type is signed. 342 */ 343 #define INT_STRLEN_MAXIMUM(type) \ 344 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \ 345 1 + TYPE_SIGNED(type)) 346 #endif /* !defined INT_STRLEN_MAXIMUM */ 347 348 /* 349 ** INITIALIZE(x) 350 */ 351 352 #ifndef GNUC_or_lint 353 #ifdef lint 354 #define GNUC_or_lint 355 #endif /* defined lint */ 356 #ifndef lint 357 #ifdef __GNUC__ 358 #define GNUC_or_lint 359 #endif /* defined __GNUC__ */ 360 #endif /* !defined lint */ 361 #endif /* !defined GNUC_or_lint */ 362 363 #ifndef INITIALIZE 364 #ifdef GNUC_or_lint 365 #define INITIALIZE(x) ((x) = 0) 366 #endif /* defined GNUC_or_lint */ 367 #ifndef GNUC_or_lint 368 #define INITIALIZE(x) 369 #endif /* !defined GNUC_or_lint */ 370 #endif /* !defined INITIALIZE */ 371 372 /* 373 ** For the benefit of GNU folk... 374 ** `_(MSGID)' uses the current locale's message library string for MSGID. 375 ** The default is to use gettext if available, and use MSGID otherwise. 376 */ 377 378 #ifndef _ 379 #if HAVE_GETTEXT 380 #define _(msgid) gettext(msgid) 381 #else /* !HAVE_GETTEXT */ 382 #define _(msgid) msgid 383 #endif /* !HAVE_GETTEXT */ 384 #endif /* !defined _ */ 385 386 #ifndef TZ_DOMAIN 387 #define TZ_DOMAIN "tz" 388 #endif /* !defined TZ_DOMAIN */ 389 390 #if HAVE_INCOMPATIBLE_CTIME_R 391 #undef asctime_r 392 #undef ctime_r 393 char *asctime_r(struct tm const *, char *); 394 char *ctime_r(time_t const *, char *); 395 #endif /* HAVE_INCOMPATIBLE_CTIME_R */ 396 397 #ifndef YEARSPERREPEAT 398 #define YEARSPERREPEAT 400 /* years before a Gregorian repeat */ 399 #endif /* !defined YEARSPERREPEAT */ 400 401 /* 402 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds. 403 */ 404 405 #ifndef AVGSECSPERYEAR 406 #define AVGSECSPERYEAR 31556952L 407 #endif /* !defined AVGSECSPERYEAR */ 408 409 #ifndef SECSPERREPEAT 410 #define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR) 411 #endif /* !defined SECSPERREPEAT */ 412 413 #ifndef SECSPERREPEAT_BITS 414 #define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */ 415 #endif /* !defined SECSPERREPEAT_BITS */ 416 417 /* 418 ** UNIX was a registered trademark of The Open Group in 2003. 419 */ 420 421 #endif /* !defined PRIVATE_H */ 422