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private.h revision 1.26.2.2 
      1 /*	$NetBSD: private.h,v 1.26.2.2 2014/08/20 00:02:16 tls Exp $	*/
      2 
      3 #ifndef PRIVATE_H
      4 #define PRIVATE_H
      5 
      6 /* NetBSD defaults */
      7 #define TM_GMTOFF	tm_gmtoff
      8 #define TM_ZONE		tm_zone
      9 #define STD_INSPIRED	1
     10 #define HAVE_LONG_DOUBLE 1
     11 
     12 /* For when we build zic as a host tool. */
     13 #if HAVE_NBTOOL_CONFIG_H
     14 #include "nbtool_config.h"
     15 #endif
     16 
     17 /*
     18 ** This file is in the public domain, so clarified as of
     19 ** 1996-06-05 by Arthur David Olson.
     20 */
     21 
     22 /*
     23 ** This header is for use ONLY with the time conversion code.
     24 ** There is no guarantee that it will remain unchanged,
     25 ** or that it will remain at all.
     26 ** Do NOT copy it to any system include directory.
     27 ** Thank you!
     28 */
     29 
     30 #define GRANDPARENTED	"Local time zone must be set--see zic manual page"
     31 
     32 /*
     33 ** Defaults for preprocessor symbols.
     34 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
     35 */
     36 
     37 #ifndef HAVE_ADJTIME
     38 #define HAVE_ADJTIME		1
     39 #endif /* !defined HAVE_ADJTIME */
     40 
     41 #ifndef HAVE_GETTEXT
     42 #define HAVE_GETTEXT		0
     43 #endif /* !defined HAVE_GETTEXT */
     44 
     45 #ifndef HAVE_INCOMPATIBLE_CTIME_R
     46 #define HAVE_INCOMPATIBLE_CTIME_R	0
     47 #endif /* !defined INCOMPATIBLE_CTIME_R */
     48 
     49 #ifndef HAVE_LINK
     50 #define HAVE_LINK		1
     51 #endif /* !defined HAVE_LINK */
     52 
     53 #ifndef HAVE_SETTIMEOFDAY
     54 #define HAVE_SETTIMEOFDAY	3
     55 #endif /* !defined HAVE_SETTIMEOFDAY */
     56 
     57 #ifndef HAVE_SYMLINK
     58 #define HAVE_SYMLINK		1
     59 #endif /* !defined HAVE_SYMLINK */
     60 
     61 #ifndef HAVE_SYS_STAT_H
     62 #define HAVE_SYS_STAT_H		1
     63 #endif /* !defined HAVE_SYS_STAT_H */
     64 
     65 #ifndef HAVE_SYS_WAIT_H
     66 #define HAVE_SYS_WAIT_H		1
     67 #endif /* !defined HAVE_SYS_WAIT_H */
     68 
     69 #ifndef HAVE_UNISTD_H
     70 #define HAVE_UNISTD_H		1
     71 #endif /* !defined HAVE_UNISTD_H */
     72 
     73 #ifndef HAVE_UTMPX_H
     74 #define HAVE_UTMPX_H		0
     75 #endif /* !defined HAVE_UTMPX_H */
     76 
     77 #ifdef LOCALE_HOME
     78 #undef LOCALE_HOME		/* not to be handled by tzcode itself */
     79 #endif /* defined LOCALE_HOME */
     80 
     81 #if HAVE_INCOMPATIBLE_CTIME_R
     82 #define asctime_r _incompatible_asctime_r
     83 #define ctime_r _incompatible_ctime_r
     84 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
     85 
     86 /*
     87 ** Nested includes
     88 */
     89 
     90 #include "sys/types.h"	/* for time_t */
     91 #include "stdio.h"
     92 #include "errno.h"
     93 #include "string.h"
     94 #include "limits.h"	/* for CHAR_BIT et al. */
     95 #include "time.h"
     96 #include "stdlib.h"
     97 
     98 #if HAVE_GETTEXT
     99 #include "libintl.h"
    100 #endif /* HAVE_GETTEXT */
    101 
    102 #if HAVE_SYS_WAIT_H
    103 #include <sys/wait.h>	/* for WIFEXITED and WEXITSTATUS */
    104 #endif /* HAVE_SYS_WAIT_H */
    105 
    106 #ifndef WIFEXITED
    107 #define WIFEXITED(status)	(((status) & 0xff) == 0)
    108 #endif /* !defined WIFEXITED */
    109 #ifndef WEXITSTATUS
    110 #define WEXITSTATUS(status)	(((status) >> 8) & 0xff)
    111 #endif /* !defined WEXITSTATUS */
    112 
    113 #if HAVE_UNISTD_H
    114 #include "unistd.h"	/* for F_OK, R_OK, and other POSIX goodness */
    115 #endif /* HAVE_UNISTD_H */
    116 
    117 #ifndef F_OK
    118 #define F_OK	0
    119 #endif /* !defined F_OK */
    120 #ifndef R_OK
    121 #define R_OK	4
    122 #endif /* !defined R_OK */
    123 
    124 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
    125 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
    126 
    127 /*
    128 ** Define HAVE_STDINT_H's default value here, rather than at the
    129 ** start, since __GLIBC__'s value depends on previously-included
    130 ** files.
    131 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
    132 */
    133 #ifndef HAVE_STDINT_H
    134 #define HAVE_STDINT_H \
    135    (199901 <= __STDC_VERSION__ \
    136     || 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__)	\
    137     || __CYGWIN__)
    138 #endif /* !defined HAVE_STDINT_H */
    139 
    140 #if HAVE_STDINT_H
    141 #include "stdint.h"
    142 #endif /* !HAVE_STDINT_H */
    143 
    144 #ifndef HAVE_INTTYPES_H
    145 # define HAVE_INTTYPES_H HAVE_STDINT_H
    146 #endif
    147 #if HAVE_INTTYPES_H
    148 # include <inttypes.h>
    149 #endif
    150 
    151 #ifndef INT_FAST64_MAX
    152 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
    153 #if defined LLONG_MAX || defined __LONG_LONG_MAX__
    154 typedef long long	int_fast64_t;
    155 # ifdef LLONG_MAX
    156 #  define INT_FAST64_MIN LLONG_MIN
    157 #  define INT_FAST64_MAX LLONG_MAX
    158 # else
    159 #  define INT_FAST64_MIN __LONG_LONG_MIN__
    160 #  define INT_FAST64_MAX __LONG_LONG_MAX__
    161 # endif
    162 # define SCNdFAST64 "lld"
    163 #else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
    164 #if (LONG_MAX >> 31) < 0xffffffff
    165 Please use a compiler that supports a 64-bit integer type (or wider);
    166 you may need to compile with "-DHAVE_STDINT_H".
    167 #endif /* (LONG_MAX >> 31) < 0xffffffff */
    168 typedef long		int_fast64_t;
    169 # define INT_FAST64_MIN LONG_MIN
    170 # define INT_FAST64_MAX LONG_MAX
    171 # define SCNdFAST64 "ld"
    172 #endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
    173 #endif /* !defined INT_FAST64_MAX */
    174 
    175 #ifndef INT_FAST32_MAX
    176 # if INT_MAX >> 31 == 0
    177 typedef long int_fast32_t;
    178 # else
    179 typedef int int_fast32_t;
    180 # endif
    181 #endif
    182 
    183 #ifndef INTMAX_MAX
    184 # if defined LLONG_MAX || defined __LONG_LONG_MAX__
    185 typedef long long intmax_t;
    186 #  define strtoimax strtoll
    187 #  define PRIdMAX "lld"
    188 #  ifdef LLONG_MAX
    189 #   define INTMAX_MAX LLONG_MAX
    190 #   define INTMAX_MIN LLONG_MIN
    191 #  else
    192 #   define INTMAX_MAX __LONG_LONG_MAX__
    193 #   define INTMAX_MIN __LONG_LONG_MIN__
    194 #  endif
    195 # else
    196 typedef long intmax_t;
    197 #  define strtoimax strtol
    198 #  define PRIdMAX "ld"
    199 #  define INTMAX_MAX LONG_MAX
    200 #  define INTMAX_MIN LONG_MIN
    201 # endif
    202 #endif
    203 
    204 #ifndef UINTMAX_MAX
    205 # if defined ULLONG_MAX || defined __LONG_LONG_MAX__
    206 typedef unsigned long long uintmax_t;
    207 #  define PRIuMAX "llu"
    208 # else
    209 typedef unsigned long uintmax_t;
    210 #  define PRIuMAX "lu"
    211 # endif
    212 #endif
    213 
    214 #ifndef INT32_MAX
    215 #define INT32_MAX 0x7fffffff
    216 #endif /* !defined INT32_MAX */
    217 #ifndef INT32_MIN
    218 #define INT32_MIN (-1 - INT32_MAX)
    219 #endif /* !defined INT32_MIN */
    220 
    221 #ifndef SIZE_MAX
    222 #define SIZE_MAX ((size_t) -1)
    223 #endif
    224 
    225 #if 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
    226 # define ATTRIBUTE_CONST __attribute__ ((__const__))
    227 # define ATTRIBUTE_PURE __attribute__ ((__pure__))
    228 # define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
    229 #else
    230 # define ATTRIBUTE_CONST /* empty */
    231 # define ATTRIBUTE_PURE /* empty */
    232 # define ATTRIBUTE_FORMAT(spec) /* empty */
    233 #endif
    234 
    235 #if !defined _Noreturn && __STDC_VERSION__ < 201112
    236 # if 2 < __GNUC__ + (8 <= __GNUC_MINOR__)
    237 #  define _Noreturn __attribute__ ((__noreturn__))
    238 # else
    239 #  define _Noreturn
    240 # endif
    241 #endif
    242 
    243 #if __STDC_VERSION__ < 199901 && !defined restrict
    244 # define restrict /* empty */
    245 #endif
    246 
    247 /*
    248 ** Workarounds for compilers/systems.
    249 */
    250 
    251 /*
    252 ** Some time.h implementations don't declare asctime_r.
    253 ** Others might define it as a macro.
    254 ** Fix the former without affecting the latter.
    255 */
    256 
    257 #ifndef asctime_r
    258 extern char *	asctime_r(struct tm const *, char *);
    259 #endif
    260 
    261 /*
    262 ** Compile with -Dtime_tz=T to build the tz package with a private
    263 ** time_t type equivalent to T rather than the system-supplied time_t.
    264 ** This debugging feature can test unusual design decisions
    265 ** (e.g., time_t wider than 'long', or unsigned time_t) even on
    266 ** typical platforms.
    267 */
    268 #ifdef time_tz
    269 static time_t sys_time(time_t *x) { return time(x); }
    270 
    271 # undef  ctime
    272 # define ctime tz_ctime
    273 # undef  ctime_r
    274 # define ctime_r tz_ctime_r
    275 # undef  difftime
    276 # define difftime tz_difftime
    277 # undef  gmtime
    278 # define gmtime tz_gmtime
    279 # undef  gmtime_r
    280 # define gmtime_r tz_gmtime_r
    281 # undef  localtime
    282 # define localtime tz_localtime
    283 # undef  localtime_r
    284 # define localtime_r tz_localtime_r
    285 # undef  mktime
    286 # define mktime tz_mktime
    287 # undef  time
    288 # define time tz_time
    289 # undef  time_t
    290 # define time_t tz_time_t
    291 
    292 typedef time_tz time_t;
    293 
    294 char *ctime(time_t const *);
    295 char *ctime_r(time_t const *, char *);
    296 double difftime(time_t, time_t);
    297 struct tm *gmtime(time_t const *);
    298 struct tm *gmtime_r(time_t const *restrict, struct tm *restrict);
    299 struct tm *localtime(time_t const *);
    300 struct tm *localtime_r(time_t const *restrict, struct tm *restrict);
    301 time_t mktime(struct tm *);
    302 
    303 static time_t
    304 time(time_t *p)
    305 {
    306 	time_t r = sys_time(0);
    307 	if (p)
    308 		*p = r;
    309 	return r;
    310 }
    311 #endif
    312 
    313 /*
    314 ** Private function declarations.
    315 */
    316 
    317 char *		icatalloc(char * old, const char * new);
    318 char *		icpyalloc(const char * string);
    319 const char *	scheck(const char * string, const char * format);
    320 
    321 /*
    322 ** Finally, some convenience items.
    323 */
    324 
    325 #ifndef TRUE
    326 #define TRUE	1
    327 #endif /* !defined TRUE */
    328 
    329 #ifndef FALSE
    330 #define FALSE	0
    331 #endif /* !defined FALSE */
    332 
    333 #ifndef TYPE_BIT
    334 #define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
    335 #endif /* !defined TYPE_BIT */
    336 
    337 #ifndef TYPE_SIGNED
    338 #define TYPE_SIGNED(type) (/*CONSTCOND*/((type) -1) < 0)
    339 #endif /* !defined TYPE_SIGNED */
    340 
    341 #ifndef INT_STRLEN_MAXIMUM
    342 /*
    343 ** 302 / 1000 is log10(2.0) rounded up.
    344 ** Subtract one for the sign bit if the type is signed;
    345 ** add one for integer division truncation;
    346 ** add one more for a minus sign if the type is signed.
    347 */
    348 #define INT_STRLEN_MAXIMUM(type) \
    349 	((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
    350 	1 + TYPE_SIGNED(type))
    351 #endif /* !defined INT_STRLEN_MAXIMUM */
    352 
    353 /*
    354 ** INITIALIZE(x)
    355 */
    356 
    357 #ifndef GNUC_or_lint
    358 #ifdef lint
    359 #define GNUC_or_lint
    360 #endif /* defined lint */
    361 #ifndef lint
    362 #ifdef __GNUC__
    363 #define GNUC_or_lint
    364 #endif /* defined __GNUC__ */
    365 #endif /* !defined lint */
    366 #endif /* !defined GNUC_or_lint */
    367 
    368 #ifndef INITIALIZE
    369 #ifdef GNUC_or_lint
    370 #define INITIALIZE(x)	((x) = 0)
    371 #endif /* defined GNUC_or_lint */
    372 #ifndef GNUC_or_lint
    373 #define INITIALIZE(x)
    374 #endif /* !defined GNUC_or_lint */
    375 #endif /* !defined INITIALIZE */
    376 
    377 /*
    378 ** For the benefit of GNU folk...
    379 ** `_(MSGID)' uses the current locale's message library string for MSGID.
    380 ** The default is to use gettext if available, and use MSGID otherwise.
    381 */
    382 
    383 #ifndef _
    384 #if HAVE_GETTEXT
    385 #define _(msgid) gettext(msgid)
    386 #else /* !HAVE_GETTEXT */
    387 #define _(msgid) msgid
    388 #endif /* !HAVE_GETTEXT */
    389 #endif /* !defined _ */
    390 
    391 #ifndef TZ_DOMAIN
    392 #define TZ_DOMAIN "tz"
    393 #endif /* !defined TZ_DOMAIN */
    394 
    395 #if HAVE_INCOMPATIBLE_CTIME_R
    396 #undef asctime_r
    397 #undef ctime_r
    398 char *asctime_r(struct tm const *, char *);
    399 char *ctime_r(time_t const *, char *);
    400 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
    401 
    402 #ifndef YEARSPERREPEAT
    403 #define YEARSPERREPEAT		400	/* years before a Gregorian repeat */
    404 #endif /* !defined YEARSPERREPEAT */
    405 
    406 /*
    407 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
    408 */
    409 
    410 #ifndef AVGSECSPERYEAR
    411 #define AVGSECSPERYEAR		31556952L
    412 #endif /* !defined AVGSECSPERYEAR */
    413 
    414 #ifndef SECSPERREPEAT
    415 #define SECSPERREPEAT		((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
    416 #endif /* !defined SECSPERREPEAT */
    417 
    418 #ifndef SECSPERREPEAT_BITS
    419 #define SECSPERREPEAT_BITS	34	/* ceil(log2(SECSPERREPEAT)) */
    420 #endif /* !defined SECSPERREPEAT_BITS */
    421 
    422 /*
    423 ** UNIX was a registered trademark of The Open Group in 2003.
    424 */
    425 
    426 #endif /* !defined PRIVATE_H */
    427