time/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 ** June 5, 1996 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   7.43";
  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_UNISTD_H
  50 #define HAVE_UNISTD_H           1
  51 #endif /* !defined HAVE_UNISTD_H */
  52
  53 #ifndef HAVE_UTMPX_H
  54 #define HAVE_UTMPX_H            0
  55 #endif /* !defined HAVE_UTMPX_H */
  56
  57 #ifndef LOCALE_HOME
  58 #define LOCALE_HOME             "/usr/lib/locale"
  59 #endif /* !defined LOCALE_HOME */
  60
  61 /*
  62 ** Nested includes
  63 */
  64
  65 #include "sys/types.h"  /* for time_t */
  66 #include "stdio.h"
  67 #include "errno.h"
  68 #include "string.h"
  69 #include "limits.h"     /* for CHAR_BIT */
  70 #include "time.h"
  71 #include "stdlib.h"
  72
  73 #if HAVE_GETTEXT - 0
  74 #include "libintl.h"
  75 #endif /* HAVE_GETTEXT - 0 */
  76
  77 #if HAVE_UNISTD_H - 0
  78 #include "unistd.h"     /* for F_OK and R_OK */
  79 #endif /* HAVE_UNISTD_H - 0 */
  80
  81 #if !(HAVE_UNISTD_H - 0)
  82 #ifndef F_OK
  83 #define F_OK    0
  84 #endif /* !defined F_OK */
  85 #ifndef R_OK
  86 #define R_OK    4
  87 #endif /* !defined R_OK */
  88 #endif /* !(HAVE_UNISTD_H - 0) */
  89
  90 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
  91 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
  92
  93 /*
  94 ** Workarounds for compilers/systems.
  95 */
  96
  97 /*
  98 ** SunOS 4.1.1 cc lacks const.
  99 */
 100
 101 #ifndef const
 102 #ifndef __STDC__
 103 #define const
 104 #endif /* !defined __STDC__ */
 105 #endif /* !defined const */
 106
 107 /*
 108 ** SunOS 4.1.1 cc lacks prototypes.
 109 */
 110
 111 #ifndef P
 112 #ifdef __STDC__
 113 #define P(x)    x
 114 #endif /* defined __STDC__ */
 115 #ifndef __STDC__
 116 #define P(x)    ()
 117 #endif /* !defined __STDC__ */
 118 #endif /* !defined P */
 119
 120 /*
 121 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
 122 */
 123
 124 #ifndef EXIT_SUCCESS
 125 #define EXIT_SUCCESS    0
 126 #endif /* !defined EXIT_SUCCESS */
 127
 128 /*
 129 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
 130 */
 131
 132 #ifndef EXIT_FAILURE
 133 #define EXIT_FAILURE    1
 134 #endif /* !defined EXIT_FAILURE */
 135
 136 /*
 137 ** SunOS 4.1.1 headers lack FILENAME_MAX.
 138 */
 139
 140 #ifndef FILENAME_MAX
 141
 142 #ifndef MAXPATHLEN
 143 #ifdef unix
 144 #include "sys/param.h"
 145 #endif /* defined unix */
 146 #endif /* !defined MAXPATHLEN */
 147
 148 #ifdef MAXPATHLEN
 149 #define FILENAME_MAX    MAXPATHLEN
 150 #endif /* defined MAXPATHLEN */
 151 #ifndef MAXPATHLEN
 152 #define FILENAME_MAX    1024            /* Pure guesswork */
 153 #endif /* !defined MAXPATHLEN */
 154
 155 #endif /* !defined FILENAME_MAX */
 156
 157 /*
 158 ** SunOS 4.1.1 libraries lack remove.
 159 */
 160
 161 #ifndef remove
 162 extern int      unlink P((const char * filename));
 163 #define remove  unlink
 164 #endif /* !defined remove */
 165
 166 /*
 167 ** Some ancient errno.h implementations don't declare errno.
 168 ** But some newer errno.h implementations define it as a macro.
 169 ** Fix the former without affecting the latter.
 170 */
 171 #ifndef errno
 172 extern int errno;
 173 #endif /* !defined errno */
 174
 175 /*
 176 ** Finally, some convenience items.
 177 */
 178
 179 #ifndef TRUE
 180 #define TRUE    1
 181 #endif /* !defined TRUE */
 182
 183 #ifndef FALSE
 184 #define FALSE   0
 185 #endif /* !defined FALSE */
 186
 187 #ifndef TYPE_BIT
 188 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 189 #endif /* !defined TYPE_BIT */
 190
 191 #ifndef TYPE_SIGNED
 192 #define TYPE_SIGNED(type) (((type) -1) < 0)
 193 #endif /* !defined TYPE_SIGNED */
 194
 195 #ifndef INT_STRLEN_MAXIMUM
 196 /*
 197 ** 302 / 1000 is log10(2.0) rounded up.
 198 ** Subtract one for the sign bit if the type is signed;
 199 ** add one for integer division truncation;
 200 ** add one more for a minus sign if the type is signed.
 201 */
 202 #define INT_STRLEN_MAXIMUM(type) \
 203     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 100 + 1 + TYPE_SIGNED(type))
 204 #endif /* !defined INT_STRLEN_MAXIMUM */
 205
 206 /*
 207 ** INITIALIZE(x)
 208 */
 209
 210 #ifndef GNUC_or_lint
 211 #ifdef lint
 212 #define GNUC_or_lint
 213 #endif /* defined lint */
 214 #ifndef lint
 215 #ifdef __GNUC__
 216 #define GNUC_or_lint
 217 #endif /* defined __GNUC__ */
 218 #endif /* !defined lint */
 219 #endif /* !defined GNUC_or_lint */
 220
 221 #ifndef INITIALIZE
 222 #ifdef GNUC_or_lint
 223 #define INITIALIZE(x)   ((x) = 0)
 224 #endif /* defined GNUC_or_lint */
 225 #ifndef GNUC_or_lint
 226 #define INITIALIZE(x)
 227 #endif /* !defined GNUC_or_lint */
 228 #endif /* !defined INITIALIZE */
 229
 230 /*
 231 ** For the benefit of GNU folk...
 232 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 233 ** The default is to use gettext if available, and use MSGID otherwise.
 234 */
 235
 236 #ifndef _
 237 #if HAVE_GETTEXT - 0
 238 #define _(msgid) gettext(msgid)
 239 #else /* !(HAVE_GETTEXT - 0) */
 240 #define _(msgid) msgid
 241 #endif /* !(HAVE_GETTEXT - 0) */
 242 #endif /* !defined _ */
 243
 244 #ifndef TZ_DOMAIN
 245 #define TZ_DOMAIN "tz"
 246 #endif /* !defined TZ_DOMAIN */
 247
 248 /*
 249 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
 250 */
 251
 252 #endif /* !defined PRIVATE_H */