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