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 (arthur_david_olson@nih.gov).
   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   7.54";
  25 #endif /* !defined NOID */
  26 #endif /* !defined lint */
  27
  28 /*
  29 ** Defaults for preprocessor symbols.
  30 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
  31 */
  32
  33 #ifndef HAVE_ADJTIME
  34 #define HAVE_ADJTIME            1
  35 #endif /* !defined HAVE_ADJTIME */
  36
  37 #ifndef HAVE_GETTEXT
  38 #define HAVE_GETTEXT            0
  39 #endif /* !defined HAVE_GETTEXT */
  40
  41 #ifndef HAVE_INCOMPATIBLE_CTIME_R
  42 #define HAVE_INCOMPATIBLE_CTIME_R       0
  43 #endif /* !defined INCOMPATIBLE_CTIME_R */
  44
  45 #ifndef HAVE_SETTIMEOFDAY
  46 #define HAVE_SETTIMEOFDAY       3
  47 #endif /* !defined HAVE_SETTIMEOFDAY */
  48
  49 #ifndef HAVE_STRERROR
  50 #define HAVE_STRERROR           1
  51 #endif /* !defined HAVE_STRERROR */
  52
  53 #ifndef HAVE_SYMLINK
  54 #define HAVE_SYMLINK            1
  55 #endif /* !defined HAVE_SYMLINK */
  56
  57 #ifndef HAVE_SYS_STAT_H
  58 #define HAVE_SYS_STAT_H         1
  59 #endif /* !defined HAVE_SYS_STAT_H */
  60
  61 #ifndef HAVE_SYS_WAIT_H
  62 #define HAVE_SYS_WAIT_H         1
  63 #endif /* !defined HAVE_SYS_WAIT_H */
  64
  65 #ifndef HAVE_UNISTD_H
  66 #define HAVE_UNISTD_H           1
  67 #endif /* !defined HAVE_UNISTD_H */
  68
  69 #ifndef HAVE_UTMPX_H
  70 #define HAVE_UTMPX_H            0
  71 #endif /* !defined HAVE_UTMPX_H */
  72
  73 #ifndef LOCALE_HOME
  74 #define LOCALE_HOME             "/usr/lib/locale"
  75 #endif /* !defined LOCALE_HOME */
  76
  77 #if HAVE_INCOMPATIBLE_CTIME_R
  78 #define asctime_r _incompatible_asctime_r
  79 #define ctime_r _incompatible_ctime_r
  80 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
  81
  82 /*
  83 ** Nested includes
  84 */
  85
  86 #include "sys/types.h"  /* for time_t */
  87 #include "stdio.h"
  88 #include "errno.h"
  89 #include "string.h"
  90 #include "limits.h"     /* for CHAR_BIT */
  91 #include "time.h"
  92 #include "stdlib.h"
  93
  94 #if HAVE_GETTEXT - 0
  95 #include "libintl.h"
  96 #endif /* HAVE_GETTEXT - 0 */
  97
  98 #if HAVE_SYS_WAIT_H - 0
  99 #include <sys/wait.h>   /* for WIFEXITED and WEXITSTATUS */
 100 #endif /* HAVE_SYS_WAIT_H - 0 */
 101
 102 #ifndef WIFEXITED
 103 #define WIFEXITED(status)       (((status) & 0xff) == 0)
 104 #endif /* !defined WIFEXITED */
 105 #ifndef WEXITSTATUS
 106 #define WEXITSTATUS(status)     (((status) >> 8) & 0xff)
 107 #endif /* !defined WEXITSTATUS */
 108
 109 #if HAVE_UNISTD_H - 0
 110 #include "unistd.h"     /* for F_OK and R_OK */
 111 #endif /* HAVE_UNISTD_H - 0 */
 112
 113 #if !(HAVE_UNISTD_H - 0)
 114 #ifndef F_OK
 115 #define F_OK    0
 116 #endif /* !defined F_OK */
 117 #ifndef R_OK
 118 #define R_OK    4
 119 #endif /* !defined R_OK */
 120 #endif /* !(HAVE_UNISTD_H - 0) */
 121
 122 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
 123 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
 124
 125 /*
 126 ** Workarounds for compilers/systems.
 127 */
 128
 129 /*
 130 ** SunOS 4.1.1 cc lacks prototypes.
 131 */
 132
 133 #ifndef P
 134 #ifdef __STDC__
 135 #define P(x)    x
 136 #endif /* defined __STDC__ */
 137 #ifndef __STDC__
 138 #define P(x)    ()
 139 #endif /* !defined __STDC__ */
 140 #endif /* !defined P */
 141
 142 /*
 143 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
 144 */
 145
 146 #ifndef EXIT_SUCCESS
 147 #define EXIT_SUCCESS    0
 148 #endif /* !defined EXIT_SUCCESS */
 149
 150 /*
 151 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
 152 */
 153
 154 #ifndef EXIT_FAILURE
 155 #define EXIT_FAILURE    1
 156 #endif /* !defined EXIT_FAILURE */
 157
 158 /*
 159 ** SunOS 4.1.1 headers lack FILENAME_MAX.
 160 */
 161
 162 #ifndef FILENAME_MAX
 163
 164 #ifndef MAXPATHLEN
 165 #ifdef unix
 166 #include "sys/param.h"
 167 #endif /* defined unix */
 168 #endif /* !defined MAXPATHLEN */
 169
 170 #ifdef MAXPATHLEN
 171 #define FILENAME_MAX    MAXPATHLEN
 172 #endif /* defined MAXPATHLEN */
 173 #ifndef MAXPATHLEN
 174 #define FILENAME_MAX    1024            /* Pure guesswork */
 175 #endif /* !defined MAXPATHLEN */
 176
 177 #endif /* !defined FILENAME_MAX */
 178
 179 /*
 180 ** SunOS 4.1.1 libraries lack remove.
 181 */
 182
 183 #ifndef remove
 184 extern int      unlink P((const char * filename));
 185 #define remove  unlink
 186 #endif /* !defined remove */
 187
 188 /*
 189 ** Some ancient errno.h implementations don't declare errno.
 190 ** But some newer errno.h implementations define it as a macro.
 191 ** Fix the former without affecting the latter.
 192 */
 193
 194 #ifndef errno
 195 extern int errno;
 196 #endif /* !defined errno */
 197
 198 /*
 199 ** Some time.h implementations don't declare asctime_r.
 200 ** Others might define it as a macro.
 201 ** Fix the former without affecting the latter.
 202 */
 203
 204 #ifndef asctime_r
 205 extern char *   asctime_r();
 206 #endif
 207
 208 /*
 209 ** Private function declarations.
 210 */
 211 char *  icalloc P((int nelem, int elsize));
 212 char *  icatalloc P((char * old, const char * new));
 213 char *  icpyalloc P((const char * string));
 214 char *  imalloc P((int n));
 215 void *  irealloc P((void * pointer, int size));
 216 void    icfree P((char * pointer));
 217 void    ifree P((char * pointer));
 218 char *  scheck P((const char *string, const char *format));
 219
 220
 221 /*
 222 ** Finally, some convenience items.
 223 */
 224
 225 #ifndef TRUE
 226 #define TRUE    1
 227 #endif /* !defined TRUE */
 228
 229 #ifndef FALSE
 230 #define FALSE   0
 231 #endif /* !defined FALSE */
 232
 233 #ifndef TYPE_BIT
 234 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 235 #endif /* !defined TYPE_BIT */
 236
 237 #ifndef TYPE_SIGNED
 238 #define TYPE_SIGNED(type) (((type) -1) < 0)
 239 #endif /* !defined TYPE_SIGNED */
 240
 241 #ifndef INT_STRLEN_MAXIMUM
 242 /*
 243 ** 302 / 1000 is log10(2.0) rounded up.
 244 ** Subtract one for the sign bit if the type is signed;
 245 ** add one for integer division truncation;
 246 ** add one more for a minus sign if the type is signed.
 247 */
 248 #define INT_STRLEN_MAXIMUM(type) \
 249     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
 250 #endif /* !defined INT_STRLEN_MAXIMUM */
 251
 252 /*
 253 ** INITIALIZE(x)
 254 */
 255
 256 #ifndef GNUC_or_lint
 257 #ifdef lint
 258 #define GNUC_or_lint
 259 #endif /* defined lint */
 260 #ifndef lint
 261 #ifdef __GNUC__
 262 #define GNUC_or_lint
 263 #endif /* defined __GNUC__ */
 264 #endif /* !defined lint */
 265 #endif /* !defined GNUC_or_lint */
 266
 267 #ifndef INITIALIZE
 268 #ifdef GNUC_or_lint
 269 #define INITIALIZE(x)   ((x) = 0)
 270 #endif /* defined GNUC_or_lint */
 271 #ifndef GNUC_or_lint
 272 #define INITIALIZE(x)
 273 #endif /* !defined GNUC_or_lint */
 274 #endif /* !defined INITIALIZE */
 275
 276 /*
 277 ** For the benefit of GNU folk...
 278 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 279 ** The default is to use gettext if available, and use MSGID otherwise.
 280 */
 281
 282 #ifndef _
 283 #if HAVE_GETTEXT - 0
 284 #define _(msgid) gettext(msgid)
 285 #else /* !(HAVE_GETTEXT - 0) */
 286 #define _(msgid) msgid
 287 #endif /* !(HAVE_GETTEXT - 0) */
 288 #endif /* !defined _ */
 289
 290 #ifndef TZ_DOMAIN
 291 #define TZ_DOMAIN "tz"
 292 #endif /* !defined TZ_DOMAIN */
 293
 294 #if HAVE_INCOMPATIBLE_CTIME_R
 295 #undef asctime_r
 296 #undef ctime_r
 297 char *asctime_r P((struct tm const *, char *));
 298 char *ctime_r P((time_t const *, char *));
 299 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
 300
 301 /*
 302 ** UNIX was a registered trademark of The Open Group in 2003.
 303 */
 304
 305 #endif /* !defined PRIVATE_H */