Home | History | Annotate | Line # | Download | only in time
private.h revision 1.1.1.9 
      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 (at) 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	7.49";
     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_SYS_WAIT_H
     54 #define HAVE_SYS_WAIT_H		1
     55 #endif /* !defined HAVE_SYS_WAIT_H */
     56 
     57 #ifndef HAVE_UNISTD_H
     58 #define HAVE_UNISTD_H		1
     59 #endif /* !defined HAVE_UNISTD_H */
     60 
     61 #ifndef HAVE_UTMPX_H
     62 #define HAVE_UTMPX_H		0
     63 #endif /* !defined HAVE_UTMPX_H */
     64 
     65 #ifndef LOCALE_HOME
     66 #define LOCALE_HOME		"/usr/lib/locale"
     67 #endif /* !defined LOCALE_HOME */
     68 
     69 /*
     70 ** Nested includes
     71 */
     72 
     73 #include "sys/types.h"	/* for time_t */
     74 #include "stdio.h"
     75 #include "errno.h"
     76 #include "string.h"
     77 #include "limits.h"	/* for CHAR_BIT */
     78 #include "time.h"
     79 #include "stdlib.h"
     80 
     81 #if HAVE_GETTEXT - 0
     82 #include "libintl.h"
     83 #endif /* HAVE_GETTEXT - 0 */
     84 
     85 #if HAVE_SYS_WAIT_H - 0
     86 #include <sys/wait.h>	/* for WIFEXITED and WEXITSTATUS */
     87 #endif /* HAVE_SYS_WAIT_H - 0 */
     88 
     89 #ifndef WIFEXITED
     90 #define WIFEXITED(status)	(((status) & 0xff) == 0)
     91 #endif /* !defined WIFEXITED */
     92 #ifndef WEXITSTATUS
     93 #define WEXITSTATUS(status)	(((status) >> 8) & 0xff)
     94 #endif /* !defined WEXITSTATUS */
     95 
     96 #if HAVE_UNISTD_H - 0
     97 #include "unistd.h"	/* for F_OK and R_OK */
     98 #endif /* HAVE_UNISTD_H - 0 */
     99 
    100 #if !(HAVE_UNISTD_H - 0)
    101 #ifndef F_OK
    102 #define F_OK	0
    103 #endif /* !defined F_OK */
    104 #ifndef R_OK
    105 #define R_OK	4
    106 #endif /* !defined R_OK */
    107 #endif /* !(HAVE_UNISTD_H - 0) */
    108 
    109 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
    110 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
    111 
    112 /*
    113 ** Workarounds for compilers/systems.
    114 */
    115 
    116 /*
    117 ** SunOS 4.1.1 cc lacks const.
    118 */
    119 
    120 #ifndef const
    121 #ifndef __STDC__
    122 #define const
    123 #endif /* !defined __STDC__ */
    124 #endif /* !defined const */
    125 
    126 /*
    127 ** SunOS 4.1.1 cc lacks prototypes.
    128 */
    129 
    130 #ifndef P
    131 #ifdef __STDC__
    132 #define P(x)	x
    133 #endif /* defined __STDC__ */
    134 #ifndef __STDC__
    135 #define P(x)	()
    136 #endif /* !defined __STDC__ */
    137 #endif /* !defined P */
    138 
    139 /*
    140 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
    141 */
    142 
    143 #ifndef EXIT_SUCCESS
    144 #define EXIT_SUCCESS	0
    145 #endif /* !defined EXIT_SUCCESS */
    146 
    147 /*
    148 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
    149 */
    150 
    151 #ifndef EXIT_FAILURE
    152 #define EXIT_FAILURE	1
    153 #endif /* !defined EXIT_FAILURE */
    154 
    155 /*
    156 ** SunOS 4.1.1 headers lack FILENAME_MAX.
    157 */
    158 
    159 #ifndef FILENAME_MAX
    160 
    161 #ifndef MAXPATHLEN
    162 #ifdef unix
    163 #include "sys/param.h"
    164 #endif /* defined unix */
    165 #endif /* !defined MAXPATHLEN */
    166 
    167 #ifdef MAXPATHLEN
    168 #define FILENAME_MAX	MAXPATHLEN
    169 #endif /* defined MAXPATHLEN */
    170 #ifndef MAXPATHLEN
    171 #define FILENAME_MAX	1024		/* Pure guesswork */
    172 #endif /* !defined MAXPATHLEN */
    173 
    174 #endif /* !defined FILENAME_MAX */
    175 
    176 /*
    177 ** SunOS 4.1.1 libraries lack remove.
    178 */
    179 
    180 #ifndef remove
    181 extern int	unlink P((const char * filename));
    182 #define remove	unlink
    183 #endif /* !defined remove */
    184 
    185 /*
    186 ** Some ancient errno.h implementations don't declare errno.
    187 ** But some newer errno.h implementations define it as a macro.
    188 ** Fix the former without affecting the latter.
    189 */
    190 #ifndef errno
    191 extern int errno;
    192 #endif /* !defined errno */
    193 
    194 /*
    195 ** Private function declarations.
    196 */
    197 char *	icalloc P((int nelem, int elsize));
    198 char *	icatalloc P((char * old, const char * new));
    199 char *	icpyalloc P((const char * string));
    200 char *	imalloc P((int n));
    201 void *	irealloc P((void * pointer, int size));
    202 void	icfree P((char * pointer));
    203 void	ifree P((char * pointer));
    204 char *	scheck P((const char *string, const char *format));
    205 
    206 
    207 /*
    208 ** Finally, some convenience items.
    209 */
    210 
    211 #ifndef TRUE
    212 #define TRUE	1
    213 #endif /* !defined TRUE */
    214 
    215 #ifndef FALSE
    216 #define FALSE	0
    217 #endif /* !defined FALSE */
    218 
    219 #ifndef TYPE_BIT
    220 #define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
    221 #endif /* !defined TYPE_BIT */
    222 
    223 #ifndef TYPE_SIGNED
    224 #define TYPE_SIGNED(type) (((type) -1) < 0)
    225 #endif /* !defined TYPE_SIGNED */
    226 
    227 #ifndef INT_STRLEN_MAXIMUM
    228 /*
    229 ** 302 / 1000 is log10(2.0) rounded up.
    230 ** Subtract one for the sign bit if the type is signed;
    231 ** add one for integer division truncation;
    232 ** add one more for a minus sign if the type is signed.
    233 */
    234 #define INT_STRLEN_MAXIMUM(type) \
    235     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
    236 #endif /* !defined INT_STRLEN_MAXIMUM */
    237 
    238 /*
    239 ** INITIALIZE(x)
    240 */
    241 
    242 #ifndef GNUC_or_lint
    243 #ifdef lint
    244 #define GNUC_or_lint
    245 #endif /* defined lint */
    246 #ifndef lint
    247 #ifdef __GNUC__
    248 #define GNUC_or_lint
    249 #endif /* defined __GNUC__ */
    250 #endif /* !defined lint */
    251 #endif /* !defined GNUC_or_lint */
    252 
    253 #ifndef INITIALIZE
    254 #ifdef GNUC_or_lint
    255 #define INITIALIZE(x)	((x) = 0)
    256 #endif /* defined GNUC_or_lint */
    257 #ifndef GNUC_or_lint
    258 #define INITIALIZE(x)
    259 #endif /* !defined GNUC_or_lint */
    260 #endif /* !defined INITIALIZE */
    261 
    262 /*
    263 ** For the benefit of GNU folk...
    264 ** `_(MSGID)' uses the current locale's message library string for MSGID.
    265 ** The default is to use gettext if available, and use MSGID otherwise.
    266 */
    267 
    268 #ifndef _
    269 #if HAVE_GETTEXT - 0
    270 #define _(msgid) gettext(msgid)
    271 #else /* !(HAVE_GETTEXT - 0) */
    272 #define _(msgid) msgid
    273 #endif /* !(HAVE_GETTEXT - 0) */
    274 #endif /* !defined _ */
    275 
    276 #ifndef TZ_DOMAIN
    277 #define TZ_DOMAIN "tz"
    278 #endif /* !defined TZ_DOMAIN */
    279 
    280 /*
    281 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
    282 */
    283 
    284 #endif /* !defined PRIVATE_H */
    285