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585 lines
14 KiB
585 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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*/ |
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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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#ifndef UNINIT_TRAP |
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# define UNINIT_TRAP 0 |
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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 HAVE_GETTEXT |
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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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#endif /* !defined PRIVATE_H */
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