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   7.51";
  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_WAIT_H
  58 #define HAVE_SYS_WAIT_H         1
  59 #endif /* !defined HAVE_SYS_WAIT_H */
  60
  61 #ifndef HAVE_UNISTD_H
  62 #define HAVE_UNISTD_H           1
  63 #endif /* !defined HAVE_UNISTD_H */
  64
  65 #ifndef HAVE_UTMPX_H
  66 #define HAVE_UTMPX_H            0
  67 #endif /* !defined HAVE_UTMPX_H */
  68
  69 #ifndef LOCALE_HOME
  70 #define LOCALE_HOME             "/usr/lib/locale"
  71 #endif /* !defined LOCALE_HOME */
  72
  73 #if HAVE_INCOMPATIBLE_CTIME_R
  74 #define asctime_r _incompatible_asctime_r
  75 #define ctime_r _incompatible_ctime_r
  76 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
  77
  78 /*
  79 ** Nested includes
  80 */
  81
  82 #include "sys/types.h"  /* for time_t */
  83 #include "stdio.h"
  84 #include "errno.h"
  85 #include "string.h"
  86 #include "limits.h"     /* for CHAR_BIT */
  87 #include "time.h"
  88 #include "stdlib.h"
  89
  90 #if HAVE_GETTEXT - 0
  91 #include "libintl.h"
  92 #endif /* HAVE_GETTEXT - 0 */
  93
  94 #if HAVE_SYS_WAIT_H - 0
  95 #include <sys/wait.h>   /* for WIFEXITED and WEXITSTATUS */
  96 #endif /* HAVE_SYS_WAIT_H - 0 */
  97
  98 #ifndef WIFEXITED
  99 #define WIFEXITED(status)       (((status) & 0xff) == 0)
 100 #endif /* !defined WIFEXITED */
 101 #ifndef WEXITSTATUS
 102 #define WEXITSTATUS(status)     (((status) >> 8) & 0xff)
 103 #endif /* !defined WEXITSTATUS */
 104
 105 #if HAVE_UNISTD_H - 0
 106 #include "unistd.h"     /* for F_OK and R_OK */
 107 #endif /* HAVE_UNISTD_H - 0 */
 108
 109 #if !(HAVE_UNISTD_H - 0)
 110 #ifndef F_OK
 111 #define F_OK    0
 112 #endif /* !defined F_OK */
 113 #ifndef R_OK
 114 #define R_OK    4
 115 #endif /* !defined R_OK */
 116 #endif /* !(HAVE_UNISTD_H - 0) */
 117
 118 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
 119 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
 120
 121 /*
 122 ** Workarounds for compilers/systems.
 123 */
 124
 125 /*
 126 ** SunOS 4.1.1 cc lacks const.
 127 */
 128
 129 #ifndef const
 130 #ifndef __STDC__
 131 #define const
 132 #endif /* !defined __STDC__ */
 133 #endif /* !defined const */
 134
 135 /*
 136 ** SunOS 4.1.1 cc lacks prototypes.
 137 */
 138
 139 #ifndef P
 140 #ifdef __STDC__
 141 #define P(x)    x
 142 #endif /* defined __STDC__ */
 143 #ifndef __STDC__
 144 #define P(x)    ()
 145 #endif /* !defined __STDC__ */
 146 #endif /* !defined P */
 147
 148 /*
 149 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
 150 */
 151
 152 #ifndef EXIT_SUCCESS
 153 #define EXIT_SUCCESS    0
 154 #endif /* !defined EXIT_SUCCESS */
 155
 156 /*
 157 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
 158 */
 159
 160 #ifndef EXIT_FAILURE
 161 #define EXIT_FAILURE    1
 162 #endif /* !defined EXIT_FAILURE */
 163
 164 /*
 165 ** SunOS 4.1.1 headers lack FILENAME_MAX.
 166 */
 167
 168 #ifndef FILENAME_MAX
 169
 170 #ifndef MAXPATHLEN
 171 #ifdef unix
 172 #include "sys/param.h"
 173 #endif /* defined unix */
 174 #endif /* !defined MAXPATHLEN */
 175
 176 #ifdef MAXPATHLEN
 177 #define FILENAME_MAX    MAXPATHLEN
 178 #endif /* defined MAXPATHLEN */
 179 #ifndef MAXPATHLEN
 180 #define FILENAME_MAX    1024            /* Pure guesswork */
 181 #endif /* !defined MAXPATHLEN */
 182
 183 #endif /* !defined FILENAME_MAX */
 184
 185 /*
 186 ** SunOS 4.1.1 libraries lack remove.
 187 */
 188
 189 #ifndef remove
 190 extern int      unlink P((const char * filename));
 191 #define remove  unlink
 192 #endif /* !defined remove */
 193
 194 /*
 195 ** Some ancient errno.h implementations don't declare errno.
 196 ** But some newer errno.h implementations define it as a macro.
 197 ** Fix the former without affecting the latter.
 198 */
 199 #ifndef errno
 200 extern int errno;
 201 #endif /* !defined errno */
 202
 203 /*
 204 ** Private function declarations.
 205 */
 206 char *  icalloc P((int nelem, int elsize));
 207 char *  icatalloc P((char * old, const char * new));
 208 char *  icpyalloc P((const char * string));
 209 char *  imalloc P((int n));
 210 void *  irealloc P((void * pointer, int size));
 211 void    icfree P((char * pointer));
 212 void    ifree P((char * pointer));
 213 char *  scheck P((const char *string, const char *format));
 214
 215
 216 /*
 217 ** Finally, some convenience items.
 218 */
 219
 220 #ifndef TRUE
 221 #define TRUE    1
 222 #endif /* !defined TRUE */
 223
 224 #ifndef FALSE
 225 #define FALSE   0
 226 #endif /* !defined FALSE */
 227
 228 #ifndef TYPE_BIT
 229 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 230 #endif /* !defined TYPE_BIT */
 231
 232 #ifndef TYPE_SIGNED
 233 #define TYPE_SIGNED(type) (((type) -1) < 0)
 234 #endif /* !defined TYPE_SIGNED */
 235
 236 #ifndef INT_STRLEN_MAXIMUM
 237 /*
 238 ** 302 / 1000 is log10(2.0) rounded up.
 239 ** Subtract one for the sign bit if the type is signed;
 240 ** add one for integer division truncation;
 241 ** add one more for a minus sign if the type is signed.
 242 */
 243 #define INT_STRLEN_MAXIMUM(type) \
 244     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
 245 #endif /* !defined INT_STRLEN_MAXIMUM */
 246
 247 /*
 248 ** INITIALIZE(x)
 249 */
 250
 251 #ifndef GNUC_or_lint
 252 #ifdef lint
 253 #define GNUC_or_lint
 254 #endif /* defined lint */
 255 #ifndef lint
 256 #ifdef __GNUC__
 257 #define GNUC_or_lint
 258 #endif /* defined __GNUC__ */
 259 #endif /* !defined lint */
 260 #endif /* !defined GNUC_or_lint */
 261
 262 #ifndef INITIALIZE
 263 #ifdef GNUC_or_lint
 264 #define INITIALIZE(x)   ((x) = 0)
 265 #endif /* defined GNUC_or_lint */
 266 #ifndef GNUC_or_lint
 267 #define INITIALIZE(x)
 268 #endif /* !defined GNUC_or_lint */
 269 #endif /* !defined INITIALIZE */
 270
 271 /*
 272 ** For the benefit of GNU folk...
 273 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 274 ** The default is to use gettext if available, and use MSGID otherwise.
 275 */
 276
 277 #ifndef _
 278 #if HAVE_GETTEXT - 0
 279 #define _(msgid) gettext(msgid)
 280 #else /* !(HAVE_GETTEXT - 0) */
 281 #define _(msgid) msgid
 282 #endif /* !(HAVE_GETTEXT - 0) */
 283 #endif /* !defined _ */
 284
 285 #ifndef TZ_DOMAIN
 286 #define TZ_DOMAIN "tz"
 287 #endif /* !defined TZ_DOMAIN */
 288
 289 #if HAVE_INCOMPATIBLE_CTIME_R
 290 #undef asctime_r
 291 #undef ctime_r
 292 char *asctime_r P((struct tm const *, char *));
 293 char *ctime_r P((time_t const *, char *));
 294 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
 295
 296 /*
 297 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
 298 */
 299
 300 #endif /* !defined PRIVATE_H */