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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#ifndef LOCALE_HOME
66#define LOCALE_HOME "/usr/lib/locale"
67#endif /* !defined LOCALE_HOME */
68
69#if HAVE_INCOMPATIBLE_CTIME_R
70#define asctime_r _incompatible_asctime_r
71#define ctime_r _incompatible_ctime_r
72#endif /* HAVE_INCOMPATIBLE_CTIME_R */
73
74/*
75** Nested includes
76*/
77
78#include "sys/types.h" /* for time_t */
79#include "stdio.h"
80#include "errno.h"
81#include "string.h"
82#include "limits.h" /* for CHAR_BIT et al. */
83#include "time.h"
84#include "stdlib.h"
85
86#if HAVE_GETTEXT
87#include "libintl.h"
88#endif /* HAVE_GETTEXT */
89
90#if HAVE_SYS_WAIT_H
91#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
92#endif /* HAVE_SYS_WAIT_H */
93
94#ifndef WIFEXITED
95#define WIFEXITED(status) (((status) & 0xff) == 0)
96#endif /* !defined WIFEXITED */
97#ifndef WEXITSTATUS
98#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
99#endif /* !defined WEXITSTATUS */
100
101#if HAVE_UNISTD_H
102#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */
103#endif /* HAVE_UNISTD_H */
104
105#ifndef F_OK
106#define F_OK 0
107#endif /* !defined F_OK */
108#ifndef R_OK
109#define R_OK 4
110#endif /* !defined R_OK */
111
112/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
113#define is_digit(c) ((unsigned)(c) - '0' <= 9)
114
115/*
116** Define HAVE_STDINT_H's default value here, rather than at the
117** start, since __GLIBC__'s value depends on previously-included
118** files.
119** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
120*/
121#ifndef HAVE_STDINT_H
122#define HAVE_STDINT_H \
123 (199901 <= __STDC_VERSION__ || \
124 2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
125#endif /* !defined HAVE_STDINT_H */
126
127#if HAVE_STDINT_H
128#include "stdint.h"
129#endif /* !HAVE_STDINT_H */
130
131#ifndef HAVE_INTTYPES_H
132# define HAVE_INTTYPES_H HAVE_STDINT_H
133#endif
134#if HAVE_INTTYPES_H
135# include <inttypes.h>
136#endif
137
138#ifndef INT_FAST64_MAX
139/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
140#if defined LLONG_MAX || defined __LONG_LONG_MAX__
141typedef long long int_fast64_t;
142# ifdef LLONG_MAX
143# define INT_FAST64_MIN LLONG_MIN
144# define INT_FAST64_MAX LLONG_MAX
145# else
146# define INT_FAST64_MIN __LONG_LONG_MIN__
147# define INT_FAST64_MAX __LONG_LONG_MAX__
148# endif
149# define SCNdFAST64 "lld"
150#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
151#if (LONG_MAX >> 31) < 0xffffffff
152Please use a compiler that supports a 64-bit integer type (or wider);
153you may need to compile with "-DHAVE_STDINT_H".
154#endif /* (LONG_MAX >> 31) < 0xffffffff */
155typedef long int_fast64_t;
156# define INT_FAST64_MIN LONG_MIN
157# define INT_FAST64_MAX LONG_MAX
158# define SCNdFAST64 "ld"
159#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
160#endif /* !defined INT_FAST64_MAX */
161
162#ifndef INT_FAST32_MAX
163# if INT_MAX >> 31 == 0
164typedef long int_fast32_t;
165# else
166typedef int int_fast32_t;
167# endif
168#endif
169
170#ifndef INTMAX_MAX
171# if defined LLONG_MAX || defined __LONG_LONG_MAX__
172typedef long long intmax_t;
173# define strtoimax strtoll
174# define PRIdMAX "lld"
175# ifdef LLONG_MAX
176# define INTMAX_MAX LLONG_MAX
177# define INTMAX_MIN LLONG_MIN
178# else
179# define INTMAX_MAX __LONG_LONG_MAX__
180# define INTMAX_MIN __LONG_LONG_MIN__
181# endif
182# else
183typedef long intmax_t;
184# define strtoimax strtol
185# define PRIdMAX "ld"
186# define INTMAX_MAX LONG_MAX
187# define INTMAX_MIN LONG_MIN
188# endif
189#endif
190
191#ifndef UINTMAX_MAX
192# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
193typedef unsigned long long uintmax_t;
194# define PRIuMAX "llu"
195# else
196typedef unsigned long uintmax_t;
197# define PRIuMAX "lu"
198# endif
199#endif
200
201#ifndef INT32_MAX
202#define INT32_MAX 0x7fffffff
203#endif /* !defined INT32_MAX */
204#ifndef INT32_MIN
205#define INT32_MIN (-1 - INT32_MAX)
206#endif /* !defined INT32_MIN */
207
208#ifndef SIZE_MAX
209#define SIZE_MAX ((size_t) -1)
210#endif
211
212#if 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
213# define ATTRIBUTE_CONST __attribute__ ((const))
214# define ATTRIBUTE_PURE __attribute__ ((__pure__))
215# define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
216#else
217# define ATTRIBUTE_CONST /* empty */
218# define ATTRIBUTE_PURE /* empty */
219# define ATTRIBUTE_FORMAT(spec) /* empty */
220#endif
221
222#if !defined _Noreturn && __STDC_VERSION__ < 201112
223# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__)
224# define _Noreturn __attribute__ ((__noreturn__))
225# else
226# define _Noreturn
227# endif
228#endif
229
230#if __STDC_VERSION__ < 199901 && !defined restrict
231# define restrict /* empty */
232#endif
233
234/*
235** Workarounds for compilers/systems.
236*/
237
238/*
239** Some time.h implementations don't declare asctime_r.
240** Others might define it as a macro.
241** Fix the former without affecting the latter.
242*/
243
244#ifndef asctime_r
245extern char * asctime_r(struct tm const *, char *);
246#endif
247
248/*
249** Compile with -Dtime_tz=T to build the tz package with a private
250** time_t type equivalent to T rather than the system-supplied time_t.
251** This debugging feature can test unusual design decisions
252** (e.g., time_t wider than 'long', or unsigned time_t) even on
253** typical platforms.
254*/
255#ifdef time_tz
256static time_t sys_time(time_t *x) { return time(x); }
257
258# undef ctime
259# define ctime tz_ctime
260# undef ctime_r
261# define ctime_r tz_ctime_r
262# undef difftime
263# define difftime tz_difftime
264# undef gmtime
265# define gmtime tz_gmtime
266# undef gmtime_r
267# define gmtime_r tz_gmtime_r
268# undef localtime
269# define localtime tz_localtime
270# undef localtime_r
271# define localtime_r tz_localtime_r
272# undef mktime
273# define mktime tz_mktime
274# undef time
275# define time tz_time
276# undef time_t
277# define time_t tz_time_t
278
279typedef time_tz time_t;
280
281char *ctime(time_t const *);
282char *ctime_r(time_t const *, char *);
283double difftime(time_t, time_t);
284struct tm *gmtime(time_t const *);
285struct tm *gmtime_r(time_t const *restrict, struct tm *restrict);
286struct tm *localtime(time_t const *);
287struct tm *localtime_r(time_t const *restrict, struct tm *restrict);
288time_t mktime(struct tm *);
289
290static time_t
291time(time_t *p)
292{
293 time_t r = sys_time(0);
294 if (p)
295 *p = r;
296 return r;
297}
298#endif
299
300/*
301** Private function declarations.
302*/
303
304char * icatalloc(char * old, const char * new);
305char * icpyalloc(const char * string);
306const char * scheck(const char * string, const char * format);
307
308/*
309** Finally, some convenience items.
310*/
311
312#ifndef TRUE
313#define TRUE 1
314#endif /* !defined TRUE */
315
316#ifndef FALSE
317#define FALSE 0
318#endif /* !defined FALSE */
319
320#ifndef TYPE_BIT
321#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
322#endif /* !defined TYPE_BIT */
323
324#ifndef TYPE_SIGNED
325#define TYPE_SIGNED(type) (((type) -1) < 0)
326#endif /* !defined TYPE_SIGNED */
327
328/* The minimum and maximum finite time values. */
329static time_t const time_t_min =
330 (TYPE_SIGNED(time_t)
331 ? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1)
332 : 0);
333static time_t const time_t_max =
334 (TYPE_SIGNED(time_t)
335 ? - (~ 0 < 0) - ((time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1))
336 : -1);
337
338#ifndef INT_STRLEN_MAXIMUM
339/*
340** 302 / 1000 is log10(2.0) rounded up.
341** Subtract one for the sign bit if the type is signed;
342** add one for integer division truncation;
343** add one more for a minus sign if the type is signed.
344*/
345#define INT_STRLEN_MAXIMUM(type) \
346 ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
347 1 + TYPE_SIGNED(type))
348#endif /* !defined INT_STRLEN_MAXIMUM */
349
350/*
351** INITIALIZE(x)
352*/
353
354#ifndef GNUC_or_lint
355#ifdef lint
356#define GNUC_or_lint
357#endif /* defined lint */
358#ifndef lint
359#ifdef __GNUC__
360#define GNUC_or_lint
361#endif /* defined __GNUC__ */
362#endif /* !defined lint */
363#endif /* !defined GNUC_or_lint */
364
365#ifndef INITIALIZE
366#ifdef GNUC_or_lint
367#define INITIALIZE(x) ((x) = 0)
368#endif /* defined GNUC_or_lint */
369#ifndef GNUC_or_lint
370#define INITIALIZE(x)
371#endif /* !defined GNUC_or_lint */
372#endif /* !defined INITIALIZE */
373
374/*
375** For the benefit of GNU folk...
376** `_(MSGID)' uses the current locale's message library string for MSGID.
377** The default is to use gettext if available, and use MSGID otherwise.
378*/
379
380#ifndef _
381#if HAVE_GETTEXT
382#define _(msgid) gettext(msgid)
383#else /* !HAVE_GETTEXT */
384#define _(msgid) msgid
385#endif /* !HAVE_GETTEXT */
386#endif /* !defined _ */
387
388#ifndef TZ_DOMAIN
389#define TZ_DOMAIN "tz"
390#endif /* !defined TZ_DOMAIN */
391
392#if HAVE_INCOMPATIBLE_CTIME_R
393#undef asctime_r
394#undef ctime_r
395char *asctime_r(struct tm const *, char *);
396char *ctime_r(time_t const *, char *);
397#endif /* HAVE_INCOMPATIBLE_CTIME_R */
398
399#ifndef YEARSPERREPEAT
400#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
401#endif /* !defined YEARSPERREPEAT */
402
403/*
404** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
405*/
406
407#ifndef AVGSECSPERYEAR
408#define AVGSECSPERYEAR 31556952L
409#endif /* !defined AVGSECSPERYEAR */
410
411#ifndef SECSPERREPEAT
412#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
413#endif /* !defined SECSPERREPEAT */
414
415#ifndef SECSPERREPEAT_BITS
416#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
417#endif /* !defined SECSPERREPEAT_BITS */
418
419/*
420** UNIX was a registered trademark of The Open Group in 2003.
421*/
422
423#endif /* !defined PRIVATE_H */