timezone/private.h

   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 /*
  19 ** ID
  20 */
  21
  22 #ifndef lint
  23 #ifndef NOID
  24 static char     privatehid[] = "@(#)private.h   8.3";
  25 #endif /* !defined NOID */
  26 #endif /* !defined lint */
  27
  28 #define GRANDPARENTED   "Local time zone must be set--see zic manual page"
  29
  30 /*
  31 ** Defaults for preprocessor symbols.
  32 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
  33 */
  34
  35 #ifndef HAVE_ADJTIME
  36 #define HAVE_ADJTIME            1
  37 #endif /* !defined HAVE_ADJTIME */
  38
  39 #ifndef HAVE_GETTEXT
  40 #define HAVE_GETTEXT            0
  41 #endif /* !defined HAVE_GETTEXT */
  42
  43 #ifndef HAVE_INCOMPATIBLE_CTIME_R
  44 #define HAVE_INCOMPATIBLE_CTIME_R       0
  45 #endif /* !defined INCOMPATIBLE_CTIME_R */
  46
  47 #ifndef HAVE_SETTIMEOFDAY
  48 #define HAVE_SETTIMEOFDAY       3
  49 #endif /* !defined HAVE_SETTIMEOFDAY */
  50
  51 #ifndef HAVE_STRERROR
  52 #define HAVE_STRERROR           1
  53 #endif /* !defined HAVE_STRERROR */
  54
  55 #ifndef HAVE_SYMLINK
  56 #define HAVE_SYMLINK            1
  57 #endif /* !defined HAVE_SYMLINK */
  58
  59 #ifndef HAVE_SYS_STAT_H
  60 #define HAVE_SYS_STAT_H         1
  61 #endif /* !defined HAVE_SYS_STAT_H */
  62
  63 #ifndef HAVE_SYS_WAIT_H
  64 #define HAVE_SYS_WAIT_H         1
  65 #endif /* !defined HAVE_SYS_WAIT_H */
  66
  67 #ifndef HAVE_UNISTD_H
  68 #define HAVE_UNISTD_H           1
  69 #endif /* !defined HAVE_UNISTD_H */
  70
  71 #ifndef HAVE_UTMPX_H
  72 #define HAVE_UTMPX_H            0
  73 #endif /* !defined HAVE_UTMPX_H */
  74
  75 #ifndef LOCALE_HOME
  76 #define LOCALE_HOME             "/usr/lib/locale"
  77 #endif /* !defined LOCALE_HOME */
  78
  79 #if HAVE_INCOMPATIBLE_CTIME_R
  80 #define asctime_r _incompatible_asctime_r
  81 #define ctime_r _incompatible_ctime_r
  82 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
  83
  84 /*
  85 ** Nested includes
  86 */
  87
  88 #include "sys/types.h"  /* for time_t */
  89 #include "stdio.h"
  90 #include "errno.h"
  91 #include "string.h"
  92 #include "limits.h"     /* for CHAR_BIT et al. */
  93 #include "time.h"
  94 #include "stdlib.h"
  95
  96 #if HAVE_GETTEXT
  97 #include "libintl.h"
  98 #endif /* HAVE_GETTEXT */
  99
 100 #if HAVE_SYS_WAIT_H
 101 #include <sys/wait.h>   /* for WIFEXITED and WEXITSTATUS */
 102 #endif /* HAVE_SYS_WAIT_H */
 103
 104 #ifndef WIFEXITED
 105 #define WIFEXITED(status)       (((status) & 0xff) == 0)
 106 #endif /* !defined WIFEXITED */
 107 #ifndef WEXITSTATUS
 108 #define WEXITSTATUS(status)     (((status) >> 8) & 0xff)
 109 #endif /* !defined WEXITSTATUS */
 110
 111 #if HAVE_UNISTD_H
 112 #include "unistd.h"     /* for F_OK and R_OK */
 113 #endif /* HAVE_UNISTD_H */
 114
 115 #if !HAVE_UNISTD_H
 116 #ifndef F_OK
 117 #define F_OK    0
 118 #endif /* !defined F_OK */
 119 #ifndef R_OK
 120 #define R_OK    4
 121 #endif /* !defined R_OK */
 122 #endif /* !HAVE_UNISTD_H */
 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 INT_FAST64_MAX
 144 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
 145 #if defined LLONG_MAX || defined __LONG_LONG_MAX__
 146 typedef long long       int_fast64_t;
 147 #else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
 148 #if (LONG_MAX >> 31) < 0xffffffff
 149 Please use a compiler that supports a 64-bit integer type (or wider);
 150 you may need to compile with "-DHAVE_STDINT_H".
 151 #endif /* (LONG_MAX >> 31) < 0xffffffff */
 152 typedef long            int_fast64_t;
 153 #endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
 154 #endif /* !defined INT_FAST64_MAX */
 155
 156 #ifndef INT32_MAX
 157 #define INT32_MAX 0x7fffffff
 158 #endif /* !defined INT32_MAX */
 159 #ifndef INT32_MIN
 160 #define INT32_MIN (-1 - INT32_MAX)
 161 #endif /* !defined INT32_MIN */
 162
 163 /*
 164 ** Workarounds for compilers/systems.
 165 */
 166
 167 /*
 168 ** If your compiler lacks prototypes, "#define P(x) ()".
 169 */
 170
 171 #ifndef P
 172 #define P(x)    x
 173 #endif /* !defined P */
 174
 175 /*
 176 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
 177 */
 178
 179 #ifndef EXIT_SUCCESS
 180 #define EXIT_SUCCESS    0
 181 #endif /* !defined EXIT_SUCCESS */
 182
 183 /*
 184 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
 185 */
 186
 187 #ifndef EXIT_FAILURE
 188 #define EXIT_FAILURE    1
 189 #endif /* !defined EXIT_FAILURE */
 190
 191 /*
 192 ** SunOS 4.1.1 headers lack FILENAME_MAX.
 193 */
 194
 195 #ifndef FILENAME_MAX
 196
 197 #ifndef MAXPATHLEN
 198 #ifdef unix
 199 #include "sys/param.h"
 200 #endif /* defined unix */
 201 #endif /* !defined MAXPATHLEN */
 202
 203 #ifdef MAXPATHLEN
 204 #define FILENAME_MAX    MAXPATHLEN
 205 #endif /* defined MAXPATHLEN */
 206 #ifndef MAXPATHLEN
 207 #define FILENAME_MAX    1024            /* Pure guesswork */
 208 #endif /* !defined MAXPATHLEN */
 209
 210 #endif /* !defined FILENAME_MAX */
 211
 212 /*
 213 ** SunOS 4.1.1 libraries lack remove.
 214 */
 215
 216 #ifndef remove
 217 extern int      unlink P((const char * filename));
 218 #define remove  unlink
 219 #endif /* !defined remove */
 220
 221 /*
 222 ** Some ancient errno.h implementations don't declare errno.
 223 ** But some newer errno.h implementations define it as a macro.
 224 ** Fix the former without affecting the latter.
 225 */
 226
 227 #ifndef errno
 228 extern int errno;
 229 #endif /* !defined errno */
 230
 231 /*
 232 ** Some time.h implementations don't declare asctime_r.
 233 ** Others might define it as a macro.
 234 ** Fix the former without affecting the latter.
 235 */
 236
 237 #ifndef asctime_r
 238 extern char *   asctime_r();
 239 #endif
 240
 241 /*
 242 ** Private function declarations.
 243 */
 244
 245 char *          icalloc P((int nelem, int elsize));
 246 char *          icatalloc P((char * old, const char * new));
 247 char *          icpyalloc P((const char * string));
 248 char *          imalloc P((int n));
 249 void *          irealloc P((void * pointer, int size));
 250 void            icfree P((char * pointer));
 251 void            ifree P((char * pointer));
 252 const char *    scheck P((const char * string, const char * format));
 253
 254 /*
 255 ** Finally, some convenience items.
 256 */
 257
 258 #ifndef TRUE
 259 #define TRUE    1
 260 #endif /* !defined TRUE */
 261
 262 #ifndef FALSE
 263 #define FALSE   0
 264 #endif /* !defined FALSE */
 265
 266 #ifndef TYPE_BIT
 267 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 268 #endif /* !defined TYPE_BIT */
 269
 270 #ifndef TYPE_SIGNED
 271 #define TYPE_SIGNED(type) (((type) -1) < 0)
 272 #endif /* !defined TYPE_SIGNED */
 273
 274 /*
 275 ** Since the definition of TYPE_INTEGRAL contains floating point numbers,
 276 ** it cannot be used in preprocessor directives.
 277 */
 278
 279 #ifndef TYPE_INTEGRAL
 280 #define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
 281 #endif /* !defined TYPE_INTEGRAL */
 282
 283 #ifndef INT_STRLEN_MAXIMUM
 284 /*
 285 ** 302 / 1000 is log10(2.0) rounded up.
 286 ** Subtract one for the sign bit if the type is signed;
 287 ** add one for integer division truncation;
 288 ** add one more for a minus sign if the type is signed.
 289 */
 290 #define INT_STRLEN_MAXIMUM(type) \
 291         ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
 292         1 + TYPE_SIGNED(type))
 293 #endif /* !defined INT_STRLEN_MAXIMUM */
 294
 295 /*
 296 ** INITIALIZE(x)
 297 */
 298
 299 #ifndef GNUC_or_lint
 300 #ifdef lint
 301 #define GNUC_or_lint
 302 #endif /* defined lint */
 303 #ifndef lint
 304 #ifdef __GNUC__
 305 #define GNUC_or_lint
 306 #endif /* defined __GNUC__ */
 307 #endif /* !defined lint */
 308 #endif /* !defined GNUC_or_lint */
 309
 310 #ifndef INITIALIZE
 311 #ifdef GNUC_or_lint
 312 #define INITIALIZE(x)   ((x) = 0)
 313 #endif /* defined GNUC_or_lint */
 314 #ifndef GNUC_or_lint
 315 #define INITIALIZE(x)
 316 #endif /* !defined GNUC_or_lint */
 317 #endif /* !defined INITIALIZE */
 318
 319 /*
 320 ** For the benefit of GNU folk...
 321 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 322 ** The default is to use gettext if available, and use MSGID otherwise.
 323 */
 324
 325 #ifndef _
 326 #if HAVE_GETTEXT
 327 #define _(msgid) gettext(msgid)
 328 #else /* !HAVE_GETTEXT */
 329 #define _(msgid) msgid
 330 #endif /* !HAVE_GETTEXT */
 331 #endif /* !defined _ */
 332
 333 #ifndef TZ_DOMAIN
 334 #define TZ_DOMAIN "tz"
 335 #endif /* !defined TZ_DOMAIN */
 336
 337 #if HAVE_INCOMPATIBLE_CTIME_R
 338 #undef asctime_r
 339 #undef ctime_r
 340 char *asctime_r P((struct tm const *, char *));
 341 char *ctime_r P((time_t const *, char *));
 342 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
 343
 344 #ifndef YEARSPERREPEAT
 345 #define YEARSPERREPEAT          400     /* years before a Gregorian repeat */
 346 #endif /* !defined YEARSPERREPEAT */
 347
 348 /*
 349 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
 350 */
 351
 352 #ifndef AVGSECSPERYEAR
 353 #define AVGSECSPERYEAR          31556952L
 354 #endif /* !defined AVGSECSPERYEAR */
 355
 356 #ifndef SECSPERREPEAT
 357 #define SECSPERREPEAT           ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
 358 #endif /* !defined SECSPERREPEAT */
 359
 360 #ifndef SECSPERREPEAT_BITS
 361 #define SECSPERREPEAT_BITS      34      /* ceil(log2(SECSPERREPEAT)) */
 362 #endif /* !defined SECSPERREPEAT_BITS */
 363
 364 /*
 365 ** UNIX was a registered trademark of The Open Group in 2003.
 366 */
 367
 368 #endif /* !defined PRIVATE_H */