5f564540a9
Parts of this are just getting us in sync with upstream, but the 'const' stuff is our own mess. We should kill the *_tz functions and lose this difference from upstream. Change-Id: I17d26534ed3f54667143d78147a8c53be56d7b33
412 lines
9.7 KiB
C
412 lines
9.7 KiB
C
#ifndef PRIVATE_H
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#define PRIVATE_H
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/*
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** This file is in the public domain, so clarified as of
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** 1996-06-05 by Arthur David Olson.
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*/
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/*
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** This header is for use ONLY with the time conversion code.
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** There is no guarantee that it will remain unchanged,
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** or that it will remain at all.
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** Do NOT copy it to any system include directory.
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** Thank you!
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*/
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#define GRANDPARENTED "Local time zone must be set--see zic manual page"
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/*
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** Defaults for preprocessor symbols.
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** You can override these in your C compiler options, e.g. '-DHAVE_ADJTIME=0'.
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*/
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#ifndef HAVE_ADJTIME
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#define HAVE_ADJTIME 1
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#endif /* !defined HAVE_ADJTIME */
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#ifndef HAVE_GETTEXT
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#define HAVE_GETTEXT 0
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#endif /* !defined HAVE_GETTEXT */
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#ifndef HAVE_INCOMPATIBLE_CTIME_R
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#define HAVE_INCOMPATIBLE_CTIME_R 0
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#endif /* !defined INCOMPATIBLE_CTIME_R */
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#ifndef HAVE_LINK
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#define HAVE_LINK 1
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#endif /* !defined HAVE_LINK */
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#ifndef HAVE_SETTIMEOFDAY
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#define HAVE_SETTIMEOFDAY 3
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#endif /* !defined HAVE_SETTIMEOFDAY */
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#ifndef HAVE_SYMLINK
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#define HAVE_SYMLINK 1
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#endif /* !defined HAVE_SYMLINK */
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#ifndef HAVE_SYS_STAT_H
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#define HAVE_SYS_STAT_H 1
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#endif /* !defined HAVE_SYS_STAT_H */
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#ifndef HAVE_SYS_WAIT_H
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#define HAVE_SYS_WAIT_H 1
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#endif /* !defined HAVE_SYS_WAIT_H */
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#ifndef HAVE_UNISTD_H
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#define HAVE_UNISTD_H 1
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#endif /* !defined HAVE_UNISTD_H */
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#ifndef HAVE_UTMPX_H
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#define HAVE_UTMPX_H 0
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#endif /* !defined HAVE_UTMPX_H */
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#if !defined(__ANDROID__)
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#ifndef LOCALE_HOME
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#define LOCALE_HOME "/usr/lib/locale"
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#endif /* !defined LOCALE_HOME */
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#endif // __ANDROID__
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#if HAVE_INCOMPATIBLE_CTIME_R
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#define asctime_r _incompatible_asctime_r
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#define ctime_r _incompatible_ctime_r
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#endif /* HAVE_INCOMPATIBLE_CTIME_R */
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/*
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** Nested includes
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*/
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#include "sys/types.h" /* for time_t */
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#include "stdio.h"
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#include "errno.h"
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#include "string.h"
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#include "limits.h" /* for CHAR_BIT et al. */
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#include "time.h"
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#include "stdlib.h"
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#if HAVE_GETTEXT
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#include "libintl.h"
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#endif /* HAVE_GETTEXT */
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#if HAVE_SYS_WAIT_H
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#include <sys/wait.h> /* for WIFEXITED and WEXITSTATUS */
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#endif /* HAVE_SYS_WAIT_H */
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#ifndef WIFEXITED
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#define WIFEXITED(status) (((status) & 0xff) == 0)
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#endif /* !defined WIFEXITED */
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#ifndef WEXITSTATUS
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#define WEXITSTATUS(status) (((status) >> 8) & 0xff)
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#endif /* !defined WEXITSTATUS */
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#if HAVE_UNISTD_H
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#include "unistd.h" /* for F_OK, R_OK, and other POSIX goodness */
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#endif /* HAVE_UNISTD_H */
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#ifndef F_OK
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#define F_OK 0
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#endif /* !defined F_OK */
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#ifndef R_OK
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#define R_OK 4
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#endif /* !defined R_OK */
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/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
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#define is_digit(c) ((unsigned)(c) - '0' <= 9)
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/*
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** Define HAVE_STDINT_H's default value here, rather than at the
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** start, since __GLIBC__'s value depends on previously-included
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** files.
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** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
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*/
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#ifndef HAVE_STDINT_H
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#define HAVE_STDINT_H \
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(199901 <= __STDC_VERSION__ \
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|| 2 < __GLIBC__ + (1 <= __GLIBC_MINOR__) \
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|| __CYGWIN__)
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#endif /* !defined HAVE_STDINT_H */
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#if HAVE_STDINT_H
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#include "stdint.h"
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#endif /* !HAVE_STDINT_H */
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#ifndef HAVE_INTTYPES_H
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# define HAVE_INTTYPES_H HAVE_STDINT_H
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#endif
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#if HAVE_INTTYPES_H
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# include <inttypes.h>
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#endif
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#ifndef INT_FAST64_MAX
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/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
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#if defined LLONG_MAX || defined __LONG_LONG_MAX__
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typedef long long int_fast64_t;
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# ifdef LLONG_MAX
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# define INT_FAST64_MIN LLONG_MIN
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# define INT_FAST64_MAX LLONG_MAX
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# else
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# define INT_FAST64_MIN __LONG_LONG_MIN__
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# define INT_FAST64_MAX __LONG_LONG_MAX__
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# endif
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# define SCNdFAST64 "lld"
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#else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
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#if (LONG_MAX >> 31) < 0xffffffff
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Please use a compiler that supports a 64-bit integer type (or wider);
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you may need to compile with "-DHAVE_STDINT_H".
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#endif /* (LONG_MAX >> 31) < 0xffffffff */
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typedef long int_fast64_t;
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# define INT_FAST64_MIN LONG_MIN
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# define INT_FAST64_MAX LONG_MAX
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# define SCNdFAST64 "ld"
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#endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
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#endif /* !defined INT_FAST64_MAX */
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#ifndef INT_FAST32_MAX
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# if INT_MAX >> 31 == 0
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typedef long int_fast32_t;
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# else
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typedef int int_fast32_t;
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# endif
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#endif
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#ifndef INTMAX_MAX
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# if defined LLONG_MAX || defined __LONG_LONG_MAX__
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typedef long long intmax_t;
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# define strtoimax strtoll
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# define PRIdMAX "lld"
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# ifdef LLONG_MAX
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# define INTMAX_MAX LLONG_MAX
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# define INTMAX_MIN LLONG_MIN
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# else
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# define INTMAX_MAX __LONG_LONG_MAX__
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# define INTMAX_MIN __LONG_LONG_MIN__
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# endif
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# else
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typedef long intmax_t;
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# define strtoimax strtol
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# define PRIdMAX "ld"
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# define INTMAX_MAX LONG_MAX
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# define INTMAX_MIN LONG_MIN
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# endif
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#endif
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#ifndef UINTMAX_MAX
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# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
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typedef unsigned long long uintmax_t;
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# define PRIuMAX "llu"
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# else
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typedef unsigned long uintmax_t;
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# define PRIuMAX "lu"
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# endif
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#endif
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#ifndef INT32_MAX
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#define INT32_MAX 0x7fffffff
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#endif /* !defined INT32_MAX */
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#ifndef INT32_MIN
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#define INT32_MIN (-1 - INT32_MAX)
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#endif /* !defined INT32_MIN */
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#ifndef SIZE_MAX
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#define SIZE_MAX ((size_t) -1)
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#endif
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#if 2 < __GNUC__ + (96 <= __GNUC_MINOR__)
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# define ATTRIBUTE_CONST __attribute__ ((const))
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# define ATTRIBUTE_PURE __attribute__ ((__pure__))
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# define ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
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#else
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# define ATTRIBUTE_CONST /* empty */
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# define ATTRIBUTE_PURE /* empty */
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# define ATTRIBUTE_FORMAT(spec) /* empty */
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#endif
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#if !defined _Noreturn && __STDC_VERSION__ < 201112
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# if 2 < __GNUC__ + (8 <= __GNUC_MINOR__)
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# define _Noreturn __attribute__ ((__noreturn__))
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# else
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# define _Noreturn
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# endif
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#endif
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#if __STDC_VERSION__ < 199901 && !defined restrict
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# define restrict /* empty */
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#endif
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/*
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** Workarounds for compilers/systems.
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*/
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/*
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** Some time.h implementations don't declare asctime_r.
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** Others might define it as a macro.
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** Fix the former without affecting the latter.
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*/
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#ifndef asctime_r
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extern char * asctime_r(struct tm const *, char *);
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#endif
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/*
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** Compile with -Dtime_tz=T to build the tz package with a private
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** time_t type equivalent to T rather than the system-supplied time_t.
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** This debugging feature can test unusual design decisions
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** (e.g., time_t wider than 'long', or unsigned time_t) even on
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** typical platforms.
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*/
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#ifdef time_tz
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static time_t sys_time(time_t *x) { return time(x); }
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# undef ctime
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# define ctime tz_ctime
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# undef ctime_r
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# define ctime_r tz_ctime_r
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# undef difftime
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# define difftime tz_difftime
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# undef gmtime
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# define gmtime tz_gmtime
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# undef gmtime_r
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# define gmtime_r tz_gmtime_r
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# undef localtime
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# define localtime tz_localtime
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# undef localtime_r
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# define localtime_r tz_localtime_r
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# undef mktime
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# define mktime tz_mktime
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# undef time
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# define time tz_time
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# undef time_t
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# define time_t tz_time_t
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typedef time_tz time_t;
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char *ctime(time_t const *);
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char *ctime_r(time_t const *, char *);
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double difftime(time_t, time_t);
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struct tm *gmtime(time_t const *);
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struct tm *gmtime_r(time_t const *restrict, struct tm *restrict);
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struct tm *localtime(time_t const *);
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struct tm *localtime_r(time_t const *restrict, struct tm *restrict);
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time_t mktime(struct tm *);
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static time_t
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time(time_t *p)
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{
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time_t r = sys_time(0);
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if (p)
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*p = r;
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return r;
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}
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#endif
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/*
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** Private function declarations.
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*/
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char * icatalloc(char * old, const char * new);
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char * icpyalloc(const char * string);
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const char * scheck(const char * string, const char * format);
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/*
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** Finally, some convenience items.
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*/
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#ifndef TRUE
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#define TRUE 1
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#endif /* !defined TRUE */
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#ifndef FALSE
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#define FALSE 0
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#endif /* !defined FALSE */
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#ifndef TYPE_BIT
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#define TYPE_BIT(type) (sizeof (type) * CHAR_BIT)
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#endif /* !defined TYPE_BIT */
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#ifndef TYPE_SIGNED
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#define TYPE_SIGNED(type) (((type) -1) < 0)
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#endif /* !defined TYPE_SIGNED */
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/* The minimum and maximum finite time values. */
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static time_t const time_t_min =
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(TYPE_SIGNED(time_t)
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? (time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1)
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: 0);
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static time_t const time_t_max =
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(TYPE_SIGNED(time_t)
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? - (~ 0 < 0) - ((time_t) -1 << (CHAR_BIT * sizeof (time_t) - 1))
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: -1);
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#ifndef INT_STRLEN_MAXIMUM
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/*
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** 302 / 1000 is log10(2.0) rounded up.
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** Subtract one for the sign bit if the type is signed;
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** add one for integer division truncation;
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** add one more for a minus sign if the type is signed.
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*/
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#define INT_STRLEN_MAXIMUM(type) \
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((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
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1 + TYPE_SIGNED(type))
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#endif /* !defined INT_STRLEN_MAXIMUM */
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/*
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** INITIALIZE(x)
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*/
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#ifdef lint
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# define INITIALIZE(x) ((x) = 0)
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#else
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# define INITIALIZE(x)
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#endif
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/*
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** For the benefit of GNU folk...
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** '_(MSGID)' uses the current locale's message library string for MSGID.
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** The default is to use gettext if available, and use MSGID otherwise.
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*/
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#ifndef _
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#if HAVE_GETTEXT
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#define _(msgid) gettext(msgid)
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#else /* !HAVE_GETTEXT */
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#define _(msgid) msgid
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#endif /* !HAVE_GETTEXT */
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#endif /* !defined _ */
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#if !defined TZ_DOMAIN && defined TZ_DOMAINDIR
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# define TZ_DOMAIN "tz"
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#endif
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#if HAVE_INCOMPATIBLE_CTIME_R
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#undef asctime_r
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#undef ctime_r
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char *asctime_r(struct tm const *, char *);
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char *ctime_r(time_t const *, char *);
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#endif /* HAVE_INCOMPATIBLE_CTIME_R */
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#ifndef YEARSPERREPEAT
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#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
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#endif /* !defined YEARSPERREPEAT */
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/*
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** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
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*/
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#ifndef AVGSECSPERYEAR
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#define AVGSECSPERYEAR 31556952L
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#endif /* !defined AVGSECSPERYEAR */
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#ifndef SECSPERREPEAT
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#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
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#endif /* !defined SECSPERREPEAT */
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#ifndef SECSPERREPEAT_BITS
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#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
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#endif /* !defined SECSPERREPEAT_BITS */
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/*
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** UNIX was a registered trademark of The Open Group in 2003.
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*/
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#endif /* !defined PRIVATE_H */
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