time/private.h

   1 #ifndef PRIVATE_H
   2
   3 #define PRIVATE_H
   4
   5 /*
   6 ** This header is for use ONLY with the time conversion code.
   7 ** There is no guarantee that it will remain unchanged,
   8 ** or that it will remain at all.
   9 ** Do NOT copy it to any system include directory.
  10 ** Thank you!
  11 */
  12
  13 /*
  14 ** ID
  15 */
  16
  17 #ifndef lint
  18 #ifndef NOID
  19 static char     privatehid[] = "@(#)private.h   7.42";
  20 #endif /* !defined NOID */
  21 #endif /* !defined lint */
  22
  23 /*
  24 ** Defaults for preprocessor symbols.
  25 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
  26 */
  27
  28 #ifndef HAVE_ADJTIME
  29 #define HAVE_ADJTIME            1
  30 #endif /* !defined HAVE_ADJTIME */
  31
  32 #ifndef HAVE_GETTEXT
  33 #define HAVE_GETTEXT            0
  34 #endif /* !defined HAVE_GETTEXT */
  35
  36 #ifndef HAVE_SETTIMEOFDAY
  37 #define HAVE_SETTIMEOFDAY       3
  38 #endif /* !defined HAVE_SETTIMEOFDAY */
  39
  40 #ifndef HAVE_STRERROR
  41 #define HAVE_STRERROR           0
  42 #endif /* !defined HAVE_STRERROR */
  43
  44 #ifndef HAVE_UNISTD_H
  45 #define HAVE_UNISTD_H           1
  46 #endif /* !defined HAVE_UNISTD_H */
  47
  48 #ifndef HAVE_UTMPX_H
  49 #define HAVE_UTMPX_H            0
  50 #endif /* !defined HAVE_UTMPX_H */
  51
  52 #ifndef LOCALE_HOME
  53 #define LOCALE_HOME             "/usr/lib/locale"
  54 #endif /* !defined LOCALE_HOME */
  55
  56 /*
  57 ** Nested includes
  58 */
  59
  60 #include "sys/types.h"  /* for time_t */
  61 #include "stdio.h"
  62 #include "errno.h"
  63 #include "string.h"
  64 #include "limits.h"     /* for CHAR_BIT */
  65 #include "time.h"
  66 #include "stdlib.h"
  67
  68 #if HAVE_GETTEXT - 0
  69 #include "libintl.h"
  70 #endif /* HAVE_GETTEXT - 0 */
  71
  72 #if HAVE_UNISTD_H - 0
  73 #include "unistd.h"     /* for F_OK and R_OK */
  74 #endif /* HAVE_UNISTD_H - 0 */
  75
  76 #if !(HAVE_UNISTD_H - 0)
  77 #ifndef F_OK
  78 #define F_OK    0
  79 #endif /* !defined F_OK */
  80 #ifndef R_OK
  81 #define R_OK    4
  82 #endif /* !defined R_OK */
  83 #endif /* !(HAVE_UNISTD_H - 0) */
  84
  85 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
  86 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
  87
  88 /*
  89 ** Workarounds for compilers/systems.
  90 */
  91
  92 /*
  93 ** SunOS 4.1.1 cc lacks const.
  94 */
  95
  96 #ifndef const
  97 #ifndef __STDC__
  98 #define const
  99 #endif /* !defined __STDC__ */
 100 #endif /* !defined const */
 101
 102 /*
 103 ** SunOS 4.1.1 cc lacks prototypes.
 104 */
 105
 106 #ifndef P
 107 #ifdef __STDC__
 108 #define P(x)    x
 109 #endif /* defined __STDC__ */
 110 #ifndef __STDC__
 111 #define P(x)    ()
 112 #endif /* !defined __STDC__ */
 113 #endif /* !defined P */
 114
 115 /*
 116 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
 117 */
 118
 119 #ifndef EXIT_SUCCESS
 120 #define EXIT_SUCCESS    0
 121 #endif /* !defined EXIT_SUCCESS */
 122
 123 /*
 124 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
 125 */
 126
 127 #ifndef EXIT_FAILURE
 128 #define EXIT_FAILURE    1
 129 #endif /* !defined EXIT_FAILURE */
 130
 131 /*
 132 ** SunOS 4.1.1 headers lack FILENAME_MAX.
 133 */
 134
 135 #ifndef FILENAME_MAX
 136
 137 #ifndef MAXPATHLEN
 138 #ifdef unix
 139 #include "sys/param.h"
 140 #endif /* defined unix */
 141 #endif /* !defined MAXPATHLEN */
 142
 143 #ifdef MAXPATHLEN
 144 #define FILENAME_MAX    MAXPATHLEN
 145 #endif /* defined MAXPATHLEN */
 146 #ifndef MAXPATHLEN
 147 #define FILENAME_MAX    1024            /* Pure guesswork */
 148 #endif /* !defined MAXPATHLEN */
 149
 150 #endif /* !defined FILENAME_MAX */
 151
 152 /*
 153 ** SunOS 4.1.1 libraries lack remove.
 154 */
 155
 156 #ifndef remove
 157 extern int      unlink P((const char * filename));
 158 #define remove  unlink
 159 #endif /* !defined remove */
 160
 161 /*
 162 ** Some ancient errno.h implementations don't declare errno.
 163 ** But some newer errno.h implementations define it as a macro.
 164 ** Fix the former without affecting the latter.
 165 */
 166 #ifndef errno
 167 extern int errno;
 168 #endif /* !defined errno */
 169
 170 /*
 171 ** Finally, some convenience items.
 172 */
 173
 174 #ifndef TRUE
 175 #define TRUE    1
 176 #endif /* !defined TRUE */
 177
 178 #ifndef FALSE
 179 #define FALSE   0
 180 #endif /* !defined FALSE */
 181
 182 #ifndef TYPE_BIT
 183 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 184 #endif /* !defined TYPE_BIT */
 185
 186 #ifndef TYPE_SIGNED
 187 #define TYPE_SIGNED(type) (((type) -1) < 0)
 188 #endif /* !defined TYPE_SIGNED */
 189
 190 #ifndef INT_STRLEN_MAXIMUM
 191 /*
 192 ** 302 / 1000 is log10(2.0) rounded up.
 193 ** Subtract one for the sign bit if the type is signed;
 194 ** add one for integer division truncation;
 195 ** add one more for a minus sign if the type is signed.
 196 */
 197 #define INT_STRLEN_MAXIMUM(type) \
 198     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 100 + 1 + TYPE_SIGNED(type))
 199 #endif /* !defined INT_STRLEN_MAXIMUM */
 200
 201 /*
 202 ** INITIALIZE(x)
 203 */
 204
 205 #ifndef GNUC_or_lint
 206 #ifdef lint
 207 #define GNUC_or_lint
 208 #endif /* defined lint */
 209 #ifndef lint
 210 #ifdef __GNUC__
 211 #define GNUC_or_lint
 212 #endif /* defined __GNUC__ */
 213 #endif /* !defined lint */
 214 #endif /* !defined GNUC_or_lint */
 215
 216 #ifndef INITIALIZE
 217 #ifdef GNUC_or_lint
 218 #define INITIALIZE(x)   ((x) = 0)
 219 #endif /* defined GNUC_or_lint */
 220 #ifndef GNUC_or_lint
 221 #define INITIALIZE(x)
 222 #endif /* !defined GNUC_or_lint */
 223 #endif /* !defined INITIALIZE */
 224
 225 /*
 226 ** For the benefit of GNU folk...
 227 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 228 ** The default is to use gettext if available, and use MSGID otherwise.
 229 */
 230
 231 #ifndef _
 232 #if HAVE_GETTEXT - 0
 233 #define _(msgid) gettext(msgid)
 234 #else /* !(HAVE_GETTEXT - 0) */
 235 #define _(msgid) msgid
 236 #endif /* !(HAVE_GETTEXT - 0) */
 237 #endif /* !defined _ */
 238
 239 #ifndef TZ_DOMAIN
 240 #define TZ_DOMAIN "tz"
 241 #endif /* !defined TZ_DOMAIN */
 242
 243 /*
 244 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
 245 */
 246
 247 #endif /* !defined PRIVATE_H */