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586 lines
14 KiB
586 lines
14 KiB
#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_GETTEXT=1'.
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*/
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#ifndef HAVE_DECL_ASCTIME_R
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#define HAVE_DECL_ASCTIME_R 1
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#endif
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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_POSIX_DECLS
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#define HAVE_POSIX_DECLS 1
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#endif
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#ifndef HAVE_STRDUP
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#define HAVE_STRDUP 1
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#endif
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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 1
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#endif /* !defined HAVE_UTMPX_H */
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#ifndef NETBSD_INSPIRED
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# define NETBSD_INSPIRED 1
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#endif
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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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/* Enable tm_gmtoff and tm_zone on GNUish systems. */
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#define _GNU_SOURCE 1
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/* Fix asctime_r on Solaris 10. */
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#define _POSIX_PTHREAD_SEMANTICS 1
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/* Enable strtoimax on Solaris 10. */
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#define __EXTENSIONS__ 1
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/*
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** Nested includes
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*/
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/* Avoid clashes with NetBSD by renaming NetBSD's declarations. */
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#define localtime_rz sys_localtime_rz
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#define mktime_z sys_mktime_z
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#define posix2time_z sys_posix2time_z
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#define time2posix_z sys_time2posix_z
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#define timezone_t sys_timezone_t
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#define tzalloc sys_tzalloc
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#define tzfree sys_tzfree
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#include <time.h>
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#undef localtime_rz
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#undef mktime_z
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#undef posix2time_z
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#undef time2posix_z
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#undef timezone_t
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#undef tzalloc
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#undef tzfree
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#include "sys/types.h" /* for time_t */
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#include "stdio.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 "stdlib.h"
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#include "errno.h"
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#ifndef ENAMETOOLONG
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# define ENAMETOOLONG EINVAL
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#endif
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#ifndef ENOTSUP
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# define ENOTSUP EINVAL
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#endif
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#ifndef EOVERFLOW
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# define EOVERFLOW EINVAL
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#endif
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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 HAVE_STRFTIME_L
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# if _POSIX_VERSION < 200809
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# define HAVE_STRFTIME_L 0
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# else
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# define HAVE_STRFTIME_L 1
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# endif
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#endif
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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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/* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX. */
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#ifdef __LONG_LONG_MAX__
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# ifndef LLONG_MAX
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# define LLONG_MAX __LONG_LONG_MAX__
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# endif
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# ifndef LLONG_MIN
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# define LLONG_MIN (-1 - LLONG_MAX)
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# endif
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#endif
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#ifndef INT_FAST64_MAX
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# ifdef LLONG_MAX
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typedef long long int_fast64_t;
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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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# 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
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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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# endif
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#endif
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#ifndef SCNdFAST64
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# if INT_FAST64_MAX == LLONG_MAX
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# define SCNdFAST64 "lld"
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# else
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# define SCNdFAST64 "ld"
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# endif
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#endif
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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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# define INT_FAST32_MAX LONG_MAX
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# define INT_FAST32_MIN LONG_MIN
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# else
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typedef int int_fast32_t;
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# define INT_FAST32_MAX INT_MAX
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# define INT_FAST32_MIN INT_MIN
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# endif
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#endif
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#ifndef INTMAX_MAX
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# ifdef LLONG_MAX
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typedef long long intmax_t;
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# define strtoimax strtoll
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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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typedef long intmax_t;
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# define strtoimax strtol
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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 PRIdMAX
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# if INTMAX_MAX == LLONG_MAX
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# define PRIdMAX "lld"
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# else
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# define PRIdMAX "ld"
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# endif
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#endif
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#ifndef UINT_FAST64_MAX
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# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
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typedef unsigned long long uint_fast64_t;
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# else
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# if ULONG_MAX >> 31 >> 1 < 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
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typedef unsigned long uint_fast64_t;
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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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# else
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typedef unsigned long uintmax_t;
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# endif
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#endif
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#ifndef PRIuMAX
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# if defined ULLONG_MAX || defined __LONG_LONG_MAX__
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# define PRIuMAX "llu"
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# else
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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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** 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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# ifdef LOCALTIME_IMPLEMENTATION
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static time_t sys_time(time_t *x) { return time(x); }
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# endif
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typedef time_tz tz_time_t;
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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 localtime_rz
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# define localtime_rz tz_localtime_rz
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# undef mktime
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# define mktime tz_mktime
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# undef mktime_z
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# define mktime_z tz_mktime_z
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# undef offtime
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# define offtime tz_offtime
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# undef posix2time
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# define posix2time tz_posix2time
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# undef posix2time_z
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# define posix2time_z tz_posix2time_z
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# undef time
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# define time tz_time
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# undef time2posix
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# define time2posix tz_time2posix
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# undef time2posix_z
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# define time2posix_z tz_time2posix_z
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# undef time_t
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# define time_t tz_time_t
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# undef timegm
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# define timegm tz_timegm
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# undef timelocal
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# define timelocal tz_timelocal
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# undef timeoff
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# define timeoff tz_timeoff
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# undef tzalloc
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# define tzalloc tz_tzalloc
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# undef tzfree
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# define tzfree tz_tzfree
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# undef tzset
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# define tzset tz_tzset
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# undef tzsetwall
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# define tzsetwall tz_tzsetwall
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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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time_t time(time_t *);
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void tzset(void);
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#endif
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#if !HAVE_DECL_ASCTIME_R && !defined asctime_r
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extern char *asctime_r(struct tm const *restrict, char *restrict);
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#endif
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#if !HAVE_POSIX_DECLS
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# ifdef USG_COMPAT
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# ifndef timezone
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extern long timezone;
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# endif
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# ifndef daylight
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extern int daylight;
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# endif
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# endif
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#endif
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#if defined ALTZONE && !defined altzone
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extern long altzone;
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#endif
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/*
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** The STD_INSPIRED functions are similar, but most also need
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** declarations if time_tz is defined.
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*/
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#ifdef STD_INSPIRED
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# if !defined tzsetwall || defined time_tz
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void tzsetwall(void);
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# endif
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# if !defined offtime || defined time_tz
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struct tm *offtime(time_t const *, long);
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# endif
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# if !defined timegm || defined time_tz
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time_t timegm(struct tm *);
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# endif
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# if !defined timelocal || defined time_tz
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time_t timelocal(struct tm *);
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# endif
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# if !defined timeoff || defined time_tz
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time_t timeoff(struct tm *, long);
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# endif
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# if !defined time2posix || defined time_tz
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time_t time2posix(time_t);
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# endif
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# if !defined posix2time || defined time_tz
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time_t posix2time(time_t);
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# endif
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#endif
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/* Infer TM_ZONE on systems where this information is known, but suppress
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guessing if NO_TM_ZONE is defined. Similarly for TM_GMTOFF. */
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#if (defined __GLIBC__ \
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|| defined __FreeBSD__ || defined __NetBSD__ || defined __OpenBSD__ \
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|| (defined __APPLE__ && defined __MACH__))
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# if !defined TM_GMTOFF && !defined NO_TM_GMTOFF
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# define TM_GMTOFF tm_gmtoff
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# endif
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# if !defined TM_ZONE && !defined NO_TM_ZONE
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# define TM_ZONE tm_zone
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# endif
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#endif
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/*
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** Define functions that are ABI compatible with NetBSD but have
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** better prototypes. NetBSD 6.1.4 defines a pointer type timezone_t
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** and labors under the misconception that 'const timezone_t' is a
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** pointer to a constant. This use of 'const' is ineffective, so it
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** is not done here. What we call 'struct state' NetBSD calls
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** 'struct __state', but this is a private name so it doesn't matter.
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*/
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#if NETBSD_INSPIRED
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typedef struct state *timezone_t;
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struct tm *localtime_rz(timezone_t restrict, time_t const *restrict,
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struct tm *restrict);
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time_t mktime_z(timezone_t restrict, struct tm *restrict);
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timezone_t tzalloc(char const *);
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void tzfree(timezone_t);
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# ifdef STD_INSPIRED
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# if !defined posix2time_z || defined time_tz
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time_t posix2time_z(timezone_t, time_t) ATTRIBUTE_PURE;
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# endif
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# if !defined time2posix_z || defined time_tz
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time_t time2posix_z(timezone_t, time_t) ATTRIBUTE_PURE;
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# endif
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# endif
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#endif
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/*
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** Finally, some convenience items.
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*/
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#if __STDC_VERSION__ < 199901
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# define true 1
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# define false 0
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# define bool int
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#else
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# include <stdbool.h>
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#endif
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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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#define TWOS_COMPLEMENT(t) ((t) ~ (t) 0 < 0)
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/* Max and min values of the integer type T, of which only the bottom
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B bits are used, and where the highest-order used bit is considered
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to be a sign bit if T is signed. */
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#define MAXVAL(t, b) \
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((t) (((t) 1 << ((b) - 1 - TYPE_SIGNED(t))) \
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- 1 + ((t) 1 << ((b) - 1 - TYPE_SIGNED(t)))))
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#define MINVAL(t, b) \
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((t) (TYPE_SIGNED(t) ? - TWOS_COMPLEMENT(t) - MAXVAL(t, b) : 0))
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/* The minimum and maximum finite time values. This assumes no padding. */
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static time_t const time_t_min = MINVAL(time_t, TYPE_BIT(time_t));
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static time_t const time_t_max = MAXVAL(time_t, TYPE_BIT(time_t));
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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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*/
|
|
#define INT_STRLEN_MAXIMUM(type) \
|
|
((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
|
|
1 + TYPE_SIGNED(type))
|
|
#endif /* !defined INT_STRLEN_MAXIMUM */
|
|
|
|
/*
|
|
** INITIALIZE(x)
|
|
*/
|
|
|
|
#ifdef lint
|
|
# define INITIALIZE(x) ((x) = 0)
|
|
#else
|
|
# define INITIALIZE(x)
|
|
#endif
|
|
|
|
#ifndef UNINIT_TRAP
|
|
# define UNINIT_TRAP 0
|
|
#endif
|
|
|
|
/*
|
|
** For the benefit of GNU folk...
|
|
** '_(MSGID)' uses the current locale's message library string for MSGID.
|
|
** The default is to use gettext if available, and use MSGID otherwise.
|
|
*/
|
|
|
|
#ifndef _
|
|
#if HAVE_GETTEXT
|
|
#define _(msgid) gettext(msgid)
|
|
#else /* !HAVE_GETTEXT */
|
|
#define _(msgid) msgid
|
|
#endif /* !HAVE_GETTEXT */
|
|
#endif /* !defined _ */
|
|
|
|
#if !defined TZ_DOMAIN && defined HAVE_GETTEXT
|
|
# define TZ_DOMAIN "tz"
|
|
#endif
|
|
|
|
#if HAVE_INCOMPATIBLE_CTIME_R
|
|
#undef asctime_r
|
|
#undef ctime_r
|
|
char *asctime_r(struct tm const *, char *);
|
|
char *ctime_r(time_t const *, char *);
|
|
#endif /* HAVE_INCOMPATIBLE_CTIME_R */
|
|
|
|
#ifndef YEARSPERREPEAT
|
|
#define YEARSPERREPEAT 400 /* years before a Gregorian repeat */
|
|
#endif /* !defined YEARSPERREPEAT */
|
|
|
|
/*
|
|
** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
|
|
*/
|
|
|
|
#ifndef AVGSECSPERYEAR
|
|
#define AVGSECSPERYEAR 31556952L
|
|
#endif /* !defined AVGSECSPERYEAR */
|
|
|
|
#ifndef SECSPERREPEAT
|
|
#define SECSPERREPEAT ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
|
|
#endif /* !defined SECSPERREPEAT */
|
|
|
|
#ifndef SECSPERREPEAT_BITS
|
|
#define SECSPERREPEAT_BITS 34 /* ceil(log2(SECSPERREPEAT)) */
|
|
#endif /* !defined SECSPERREPEAT_BITS */
|
|
|
|
#endif /* !defined PRIVATE_H */
|