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_SETTIMEOFDAY
38#define HAVE_SETTIMEOFDAY	3
39#endif /* !defined HAVE_SETTIMEOFDAY */
40
41#ifndef HAVE_SYMLINK
42#define HAVE_SYMLINK		1
43#endif /* !defined HAVE_SYMLINK */
44
45#ifndef HAVE_SYS_STAT_H
46#define HAVE_SYS_STAT_H		1
47#endif /* !defined HAVE_SYS_STAT_H */
48
49#ifndef HAVE_SYS_WAIT_H
50#define HAVE_SYS_WAIT_H		1
51#endif /* !defined HAVE_SYS_WAIT_H */
52
53#ifndef HAVE_UNISTD_H
54#define HAVE_UNISTD_H		1
55#endif /* !defined HAVE_UNISTD_H */
56
57#ifndef HAVE_UTMPX_H
58#define HAVE_UTMPX_H		0
59#endif /* !defined HAVE_UTMPX_H */
60
61#ifndef LOCALE_HOME
62#define LOCALE_HOME		"/usr/lib/locale"
63#endif /* !defined LOCALE_HOME */
64
65#if HAVE_INCOMPATIBLE_CTIME_R
66#define asctime_r _incompatible_asctime_r
67#define ctime_r _incompatible_ctime_r
68#endif /* HAVE_INCOMPATIBLE_CTIME_R */
69
70/*
71** Nested includes
72*/
73
74#include "sys/types.h"	/* for time_t */
75#include "stdio.h"
76#include "errno.h"
77#include "string.h"
78#include "limits.h"	/* for CHAR_BIT et al. */
79#include "time.h"
80#include "stdlib.h"
81
82#if HAVE_GETTEXT
83#include "libintl.h"
84#endif /* HAVE_GETTEXT */
85
86#if HAVE_SYS_WAIT_H
87#include <sys/wait.h>	/* for WIFEXITED and WEXITSTATUS */
88#endif /* HAVE_SYS_WAIT_H */
89
90#ifndef WIFEXITED
91#define WIFEXITED(status)	(((status) & 0xff) == 0)
92#endif /* !defined WIFEXITED */
93#ifndef WEXITSTATUS
94#define WEXITSTATUS(status)	(((status) >> 8) & 0xff)
95#endif /* !defined WEXITSTATUS */
96
97#if HAVE_UNISTD_H
98#include "unistd.h"	/* for F_OK, R_OK, and other POSIX goodness */
99#endif /* HAVE_UNISTD_H */
100
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
108/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
109#define is_digit(c) ((unsigned)(c) - '0' <= 9)
110
111/*
112** Define HAVE_STDINT_H's default value here, rather than at the
113** start, since __GLIBC__'s value depends on previously-included
114** files.
115** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
116*/
117#ifndef HAVE_STDINT_H
118#define HAVE_STDINT_H \
119	(199901 <= __STDC_VERSION__ || \
120	2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
121#endif /* !defined HAVE_STDINT_H */
122
123#if HAVE_STDINT_H
124#include "stdint.h"
125#endif /* !HAVE_STDINT_H */
126
127#ifndef HAVE_INTTYPES_H
128# define HAVE_INTTYPES_H HAVE_STDINT_H
129#endif
130#if HAVE_INTTYPES_H
131# include <inttypes.h>
132#endif
133
134#ifndef INT_FAST64_MAX
135/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
136#if defined LLONG_MAX || defined __LONG_LONG_MAX__
137typedef long long	int_fast64_t;
138# ifdef LLONG_MAX
139#  define INT_FAST64_MIN LLONG_MIN
140#  define INT_FAST64_MAX LLONG_MAX
141# else
142#  define INT_FAST64_MIN __LONG_LONG_MIN__
143#  define INT_FAST64_MAX __LONG_LONG_MAX__
144# endif
145# define SCNdFAST64 "lld"
146#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
147#if (LONG_MAX >> 31) < 0xffffffff
148Please use a compiler that supports a 64-bit integer type (or wider);
149you may need to compile with "-DHAVE_STDINT_H".
150#endif /* (LONG_MAX >> 31) < 0xffffffff */
151typedef long		int_fast64_t;
152# define INT_FAST64_MIN LONG_MIN
153# define INT_FAST64_MAX LONG_MAX
154# define SCNdFAST64 "ld"
155#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
156#endif /* !defined INT_FAST64_MAX */
157
158#ifndef INT_FAST32_MAX
159# if INT_MAX >> 31 == 0
160typedef long int_fast32_t;
161# else
162typedef int int_fast32_t;
163# endif
164#endif
165
166#ifndef INTMAX_MAX
167# if defined LLONG_MAX || defined __LONG_LONG_MAX__
168typedef long long intmax_t;
169#  define PRIdMAX "lld"
170# else
171typedef long intmax_t;
172#  define PRIdMAX "ld"
173# endif
174#endif
175
176#ifndef UINTMAX_MAX
177# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
178typedef unsigned long long uintmax_t;
179#  define PRIuMAX "llu"
180# else
181typedef unsigned long uintmax_t;
182#  define PRIuMAX "lu"
183# endif
184#endif
185
186#ifndef INT32_MAX
187#define INT32_MAX 0x7fffffff
188#endif /* !defined INT32_MAX */
189#ifndef INT32_MIN
190#define INT32_MIN (-1 - INT32_MAX)
191#endif /* !defined INT32_MIN */
192
193#if 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
194# define ATTRIBUTE_CONST __attribute__ ((const))
195# define ATTRIBUTE_PURE __attribute__ ((__pure__))
196#else
197# define ATTRIBUTE_CONST /* empty */
198# define ATTRIBUTE_PURE /* empty */
199#endif
200
201#if !defined _Noreturn && __STDC_VERSION__ < 201112
202# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__)
203#  define _Noreturn __attribute__ ((__noreturn__))
204# else
205#  define _Noreturn
206# endif
207#endif
208
209#if __STDC_VERSION__ < 199901 && !defined restrict
210# define restrict /* empty */
211#endif
212
213/*
214** Workarounds for compilers/systems.
215*/
216
217/*
218** Some time.h implementations don't declare asctime_r.
219** Others might define it as a macro.
220** Fix the former without affecting the latter.
221*/
222
223#ifndef asctime_r
224extern char *	asctime_r(struct tm const *, char *);
225#endif
226
227/*
228** Compile with -Dtime_tz=T to build the tz package with a private
229** time_t type equivalent to T rather than the system-supplied time_t.
230** This debugging feature can test unusual design decisions
231** (e.g., time_t wider than 'long', or unsigned time_t) even on
232** typical platforms.
233*/
234#ifdef time_tz
235static time_t sys_time(time_t *x) { return time(x); }
236
237# undef  ctime
238# define ctime tz_ctime
239# undef  ctime_r
240# define ctime_r tz_ctime_r
241# undef  difftime
242# define difftime tz_difftime
243# undef  gmtime
244# define gmtime tz_gmtime
245# undef  gmtime_r
246# define gmtime_r tz_gmtime_r
247# undef  localtime
248# define localtime tz_localtime
249# undef  localtime_r
250# define localtime_r tz_localtime_r
251# undef  mktime
252# define mktime tz_mktime
253# undef  time
254# define time tz_time
255# undef  time_t
256# define time_t tz_time_t
257
258typedef time_tz time_t;
259
260char *ctime(time_t const *);
261char *ctime_r(time_t const *, char *);
262double difftime(time_t, time_t);
263struct tm *gmtime(time_t const *);
264struct tm *gmtime_r(time_t const *restrict, struct tm *restrict);
265struct tm *localtime(time_t const *);
266struct tm *localtime_r(time_t const *restrict, struct tm *restrict);
267time_t mktime(struct tm *);
268
269static time_t
270time(time_t *p)
271{
272	time_t r = sys_time(0);
273	if (p)
274		*p = r;
275	return r;
276}
277#endif
278
279/*
280** Private function declarations.
281*/
282
283char *		icatalloc(char * old, const char * new);
284char *		icpyalloc(const char * string);
285const char *	scheck(const char * string, const char * format);
286
287/*
288** Finally, some convenience items.
289*/
290
291#ifndef TRUE
292#define TRUE	1
293#endif /* !defined TRUE */
294
295#ifndef FALSE
296#define FALSE	0
297#endif /* !defined FALSE */
298
299#ifndef TYPE_BIT
300#define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
301#endif /* !defined TYPE_BIT */
302
303#ifndef TYPE_SIGNED
304#define TYPE_SIGNED(type) (((type) -1) < 0)
305#endif /* !defined TYPE_SIGNED */
306
307/* The minimum and maximum finite time values.  */
308static time_t const time_t_min =
309  (TYPE_SIGNED(time_t)
310   ? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1)
311   : 0);
312static time_t const time_t_max =
313  (TYPE_SIGNED(time_t)
314   ? - (~ 0 < 0) - ((time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1))
315   : -1);
316
317/*
318** Since the definition of TYPE_INTEGRAL contains floating point numbers,
319** it cannot be used in preprocessor directives.
320*/
321
322#ifndef TYPE_INTEGRAL
323#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
324#endif /* !defined TYPE_INTEGRAL */
325
326#ifndef INT_STRLEN_MAXIMUM
327/*
328** 302 / 1000 is log10(2.0) rounded up.
329** Subtract one for the sign bit if the type is signed;
330** add one for integer division truncation;
331** add one more for a minus sign if the type is signed.
332*/
333#define INT_STRLEN_MAXIMUM(type) \
334	((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
335	1 + TYPE_SIGNED(type))
336#endif /* !defined INT_STRLEN_MAXIMUM */
337
338/*
339** INITIALIZE(x)
340*/
341
342#ifndef GNUC_or_lint
343#ifdef lint
344#define GNUC_or_lint
345#endif /* defined lint */
346#ifndef lint
347#ifdef __GNUC__
348#define GNUC_or_lint
349#endif /* defined __GNUC__ */
350#endif /* !defined lint */
351#endif /* !defined GNUC_or_lint */
352
353#ifndef INITIALIZE
354#ifdef GNUC_or_lint
355#define INITIALIZE(x)	((x) = 0)
356#endif /* defined GNUC_or_lint */
357#ifndef GNUC_or_lint
358#define INITIALIZE(x)
359#endif /* !defined GNUC_or_lint */
360#endif /* !defined INITIALIZE */
361
362/*
363** For the benefit of GNU folk...
364** `_(MSGID)' uses the current locale's message library string for MSGID.
365** The default is to use gettext if available, and use MSGID otherwise.
366*/
367
368#ifndef _
369#if HAVE_GETTEXT
370#define _(msgid) gettext(msgid)
371#else /* !HAVE_GETTEXT */
372#define _(msgid) msgid
373#endif /* !HAVE_GETTEXT */
374#endif /* !defined _ */
375
376#ifndef TZ_DOMAIN
377#define TZ_DOMAIN "tz"
378#endif /* !defined TZ_DOMAIN */
379
380#if HAVE_INCOMPATIBLE_CTIME_R
381#undef asctime_r
382#undef ctime_r
383char *asctime_r(struct tm const *, char *);
384char *ctime_r(time_t const *, char *);
385#endif /* HAVE_INCOMPATIBLE_CTIME_R */
386
387#ifndef YEARSPERREPEAT
388#define YEARSPERREPEAT		400	/* years before a Gregorian repeat */
389#endif /* !defined YEARSPERREPEAT */
390
391/*
392** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
393*/
394
395#ifndef AVGSECSPERYEAR
396#define AVGSECSPERYEAR		31556952L
397#endif /* !defined AVGSECSPERYEAR */
398
399#ifndef SECSPERREPEAT
400#define SECSPERREPEAT		((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
401#endif /* !defined SECSPERREPEAT */
402
403#ifndef SECSPERREPEAT_BITS
404#define SECSPERREPEAT_BITS	34	/* ceil(log2(SECSPERREPEAT)) */
405#endif /* !defined SECSPERREPEAT_BITS */
406
407/*
408** UNIX was a registered trademark of The Open Group in 2003.
409*/
410
411#endif /* !defined PRIVATE_H */
412