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   7.47";
  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_SETTIMEOFDAY
  42 #define HAVE_SETTIMEOFDAY       3
  43 #endif /* !defined HAVE_SETTIMEOFDAY */
  44
  45 #ifndef HAVE_STRERROR
  46 #define HAVE_STRERROR           0
  47 #endif /* !defined HAVE_STRERROR */
  48
  49 #ifndef HAVE_SYMLINK
  50 #define HAVE_SYMLINK            1
  51 #endif /* !defined HAVE_SYMLINK */
  52
  53 #ifndef HAVE_UNISTD_H
  54 #define HAVE_UNISTD_H           1
  55 #endif /* !defined HAVE_UNISTD_H */
  56
  57 #ifndef HAVE_UTMPX_H
  58 #define HAVE_UTMPX_H            0
  59 #endif /* !defined HAVE_UTMPX_H */
  60
  61 #ifndef LOCALE_HOME
  62 #define LOCALE_HOME             "/usr/lib/locale"
  63 #endif /* !defined LOCALE_HOME */
  64
  65 /*
  66 ** Nested includes
  67 */
  68
  69 #include "sys/types.h"  /* for time_t */
  70 #include "stdio.h"
  71 #include "errno.h"
  72 #include "string.h"
  73 #include "limits.h"     /* for CHAR_BIT */
  74 #include "time.h"
  75 #include "stdlib.h"
  76
  77 #if HAVE_GETTEXT - 0
  78 #include "libintl.h"
  79 #endif /* HAVE_GETTEXT - 0 */
  80
  81 #if HAVE_UNISTD_H - 0
  82 #include "unistd.h"     /* for F_OK and R_OK */
  83 #endif /* HAVE_UNISTD_H - 0 */
  84
  85 #if !(HAVE_UNISTD_H - 0)
  86 #ifndef F_OK
  87 #define F_OK    0
  88 #endif /* !defined F_OK */
  89 #ifndef R_OK
  90 #define R_OK    4
  91 #endif /* !defined R_OK */
  92 #endif /* !(HAVE_UNISTD_H - 0) */
  93
  94 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
  95 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
  96
  97 /*
  98 ** Workarounds for compilers/systems.
  99 */
 100
 101 /*
 102 ** SunOS 4.1.1 cc lacks const.
 103 */
 104
 105 #ifndef const
 106 #ifndef __STDC__
 107 #define const
 108 #endif /* !defined __STDC__ */
 109 #endif /* !defined const */
 110
 111 /*
 112 ** SunOS 4.1.1 cc lacks prototypes.
 113 */
 114
 115 #ifndef P
 116 #ifdef __STDC__
 117 #define P(x)    x
 118 #endif /* defined __STDC__ */
 119 #ifndef __STDC__
 120 #define P(x)    ()
 121 #endif /* !defined __STDC__ */
 122 #endif /* !defined P */
 123
 124 /*
 125 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
 126 */
 127
 128 #ifndef EXIT_SUCCESS
 129 #define EXIT_SUCCESS    0
 130 #endif /* !defined EXIT_SUCCESS */
 131
 132 /*
 133 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
 134 */
 135
 136 #ifndef EXIT_FAILURE
 137 #define EXIT_FAILURE    1
 138 #endif /* !defined EXIT_FAILURE */
 139
 140 /*
 141 ** SunOS 4.1.1 headers lack FILENAME_MAX.
 142 */
 143
 144 #ifndef FILENAME_MAX
 145
 146 #ifndef MAXPATHLEN
 147 #ifdef unix
 148 #include "sys/param.h"
 149 #endif /* defined unix */
 150 #endif /* !defined MAXPATHLEN */
 151
 152 #ifdef MAXPATHLEN
 153 #define FILENAME_MAX    MAXPATHLEN
 154 #endif /* defined MAXPATHLEN */
 155 #ifndef MAXPATHLEN
 156 #define FILENAME_MAX    1024            /* Pure guesswork */
 157 #endif /* !defined MAXPATHLEN */
 158
 159 #endif /* !defined FILENAME_MAX */
 160
 161 /*
 162 ** SunOS 4.1.1 libraries lack remove.
 163 */
 164
 165 #ifndef remove
 166 extern int      unlink P((const char * filename));
 167 #define remove  unlink
 168 #endif /* !defined remove */
 169
 170 /*
 171 ** Some ancient errno.h implementations don't declare errno.
 172 ** But some newer errno.h implementations define it as a macro.
 173 ** Fix the former without affecting the latter.
 174 */
 175 #ifndef errno
 176 extern int errno;
 177 #endif /* !defined errno */
 178
 179 /*
 180 ** Private function declarations.
 181 */
 182 char *  icalloc P((int nelem, int elsize));
 183 char *  icatalloc P((char * old, const char * new));
 184 char *  icpyalloc P((const char * string));
 185 char *  imalloc P((int n));
 186 void *  irealloc P((void * pointer, int size));
 187 void    icfree P((char * pointer));
 188 void    ifree P((char * pointer));
 189 char *  scheck P((const char *string, const char *format));
 190
 191
 192 /*
 193 ** Finally, some convenience items.
 194 */
 195
 196 #ifndef TRUE
 197 #define TRUE    1
 198 #endif /* !defined TRUE */
 199
 200 #ifndef FALSE
 201 #define FALSE   0
 202 #endif /* !defined FALSE */
 203
 204 #ifndef TYPE_BIT
 205 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 206 #endif /* !defined TYPE_BIT */
 207
 208 #ifndef TYPE_SIGNED
 209 #define TYPE_SIGNED(type) (((type) -1) < 0)
 210 #endif /* !defined TYPE_SIGNED */
 211
 212 #ifndef INT_STRLEN_MAXIMUM
 213 /*
 214 ** 302 / 1000 is log10(2.0) rounded up.
 215 ** Subtract one for the sign bit if the type is signed;
 216 ** add one for integer division truncation;
 217 ** add one more for a minus sign if the type is signed.
 218 */
 219 #define INT_STRLEN_MAXIMUM(type) \
 220     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 100 + 1 + TYPE_SIGNED(type))
 221 #endif /* !defined INT_STRLEN_MAXIMUM */
 222
 223 /*
 224 ** INITIALIZE(x)
 225 */
 226
 227 #ifndef GNUC_or_lint
 228 #ifdef lint
 229 #define GNUC_or_lint
 230 #endif /* defined lint */
 231 #ifndef lint
 232 #ifdef __GNUC__
 233 #define GNUC_or_lint
 234 #endif /* defined __GNUC__ */
 235 #endif /* !defined lint */
 236 #endif /* !defined GNUC_or_lint */
 237
 238 #ifndef INITIALIZE
 239 #ifdef GNUC_or_lint
 240 #define INITIALIZE(x)   ((x) = 0)
 241 #endif /* defined GNUC_or_lint */
 242 #ifndef GNUC_or_lint
 243 #define INITIALIZE(x)
 244 #endif /* !defined GNUC_or_lint */
 245 #endif /* !defined INITIALIZE */
 246
 247 /*
 248 ** For the benefit of GNU folk...
 249 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 250 ** The default is to use gettext if available, and use MSGID otherwise.
 251 */
 252
 253 #ifndef _
 254 #if HAVE_GETTEXT - 0
 255 #define _(msgid) gettext(msgid)
 256 #else /* !(HAVE_GETTEXT - 0) */
 257 #define _(msgid) msgid
 258 #endif /* !(HAVE_GETTEXT - 0) */
 259 #endif /* !defined _ */
 260
 261 #ifndef TZ_DOMAIN
 262 #define TZ_DOMAIN "tz"
 263 #endif /* !defined TZ_DOMAIN */
 264
 265 /*
 266 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
 267 */
 268
 269 #endif /* !defined PRIVATE_H */