path: root/timezone/private.h

/* Private header for tzdb code.  */

#ifndef PRIVATE_H

#define PRIVATE_H

/*
** This file is in the public domain, so clarified as of
** 1996-06-05 by Arthur David Olson.
*/

/*
** This header is for use ONLY with the time conversion code.
** There is no guarantee that it will remain unchanged,
** or that it will remain at all.
** Do NOT copy it to any system include directory.
** Thank you!
*/

/*
** zdump has been made independent of the rest of the time
** conversion package to increase confidence in the verification it provides.
** You can use zdump to help in verifying other implementations.
** To do this, compile with -DUSE_LTZ=0 and link without the tz library.
*/
#ifndef USE_LTZ
# define USE_LTZ 1
#endif

/* This string was in the Factory zone through version 2016f.  */
#define GRANDPARENTED	"Local time zone must be set--see zic manual page"

/*
** Defaults for preprocessor symbols.
** You can override these in your C compiler options, e.g. '-DHAVE_GETTEXT=1'.
*/

#ifndef HAVE_DECL_ASCTIME_R
#define HAVE_DECL_ASCTIME_R 1
#endif

#if !defined HAVE_GENERIC && defined __has_extension
# if __has_extension(c_generic_selections)
#  define HAVE_GENERIC 1
# else
#  define HAVE_GENERIC 0
# endif
#endif
/* _Generic is buggy in pre-4.9 GCC.  */
#if !defined HAVE_GENERIC && defined __GNUC__
# define HAVE_GENERIC (4 < __GNUC__ + (9 <= __GNUC_MINOR__))
#endif
#ifndef HAVE_GENERIC
# define HAVE_GENERIC (201112 <= __STDC_VERSION__)
#endif

#ifndef HAVE_GETTEXT
#define HAVE_GETTEXT		0
#endif /* !defined HAVE_GETTEXT */

#ifndef HAVE_INCOMPATIBLE_CTIME_R
#define HAVE_INCOMPATIBLE_CTIME_R	0
#endif

#ifndef HAVE_LINK
#define HAVE_LINK		1
#endif /* !defined HAVE_LINK */

#ifndef HAVE_POSIX_DECLS
#define HAVE_POSIX_DECLS 1
#endif

#ifndef HAVE_STDBOOL_H
#define HAVE_STDBOOL_H (199901 <= __STDC_VERSION__)
#endif

#ifndef HAVE_STRDUP
#define HAVE_STRDUP 1
#endif

#ifndef HAVE_STRTOLL
#define HAVE_STRTOLL 1
#endif

#ifndef HAVE_SYMLINK
#define HAVE_SYMLINK		1
#endif /* !defined HAVE_SYMLINK */

#ifndef HAVE_SYS_STAT_H
#define HAVE_SYS_STAT_H		1
#endif /* !defined HAVE_SYS_STAT_H */

#ifndef HAVE_SYS_WAIT_H
#define HAVE_SYS_WAIT_H		1
#endif /* !defined HAVE_SYS_WAIT_H */

#ifndef HAVE_UNISTD_H
#define HAVE_UNISTD_H		1
#endif /* !defined HAVE_UNISTD_H */

#ifndef HAVE_UTMPX_H
#define HAVE_UTMPX_H		1
#endif /* !defined HAVE_UTMPX_H */

#ifndef NETBSD_INSPIRED
# define NETBSD_INSPIRED 1
#endif

#if HAVE_INCOMPATIBLE_CTIME_R
#define asctime_r _incompatible_asctime_r
#define ctime_r _incompatible_ctime_r
#endif /* HAVE_INCOMPATIBLE_CTIME_R */

/* Enable tm_gmtoff, tm_zone, and environ on GNUish systems.  */
#define _GNU_SOURCE 1
/* Fix asctime_r on Solaris 11.  */
#define _POSIX_PTHREAD_SEMANTICS 1
/* Enable strtoimax on pre-C99 Solaris 11.  */
#define __EXTENSIONS__ 1

/* To avoid having 'stat' fail unnecessarily with errno == EOVERFLOW,
   enable large files on GNUish systems ...  */
#ifndef _FILE_OFFSET_BITS
# define _FILE_OFFSET_BITS 64
#endif
/* ... and on AIX ...  */
#define _LARGE_FILES 1
/* ... and enable large inode numbers on Mac OS X 10.5 and later.  */
#define _DARWIN_USE_64_BIT_INODE 1

/*
** Nested includes
*/

/* Avoid clashes with NetBSD by renaming NetBSD's declarations.
   If defining the 'timezone' variable, avoid a clash with FreeBSD's
   'timezone' function by renaming its declaration.  */
#define localtime_rz sys_localtime_rz
#define mktime_z sys_mktime_z
#define posix2time_z sys_posix2time_z
#define time2posix_z sys_time2posix_z
#if defined USG_COMPAT && USG_COMPAT == 2
# define timezone sys_timezone
#endif
#define timezone_t sys_timezone_t
#define tzalloc sys_tzalloc
#define tzfree sys_tzfree
#include <time.h>
#undef localtime_rz
#undef mktime_z
#undef posix2time_z
#undef time2posix_z
#if defined USG_COMPAT && USG_COMPAT == 2
# undef timezone
#endif
#undef timezone_t
#undef tzalloc
#undef tzfree

#include <sys/types.h>	/* for time_t */
#include <string.h>
#include <limits.h>	/* for CHAR_BIT et al. */
#include <stdlib.h>

#include <errno.h>

#ifndef ENAMETOOLONG
# define ENAMETOOLONG EINVAL
#endif
#ifndef ENOTSUP
# define ENOTSUP EINVAL
#endif
#ifndef EOVERFLOW
# define EOVERFLOW EINVAL
#endif

#if HAVE_GETTEXT
#include <libintl.h>
#endif /* HAVE_GETTEXT */

#if HAVE_UNISTD_H
#include <unistd.h>	/* for R_OK, and other POSIX goodness */
#endif /* HAVE_UNISTD_H */

#ifndef HAVE_STRFTIME_L
# if _POSIX_VERSION < 200809
#  define HAVE_STRFTIME_L 0
# else
#  define HAVE_STRFTIME_L 1
# endif
#endif

#ifndef USG_COMPAT
# ifndef _XOPEN_VERSION
#  define USG_COMPAT 0
# else
#  define USG_COMPAT 1
# endif
#endif

#ifndef HAVE_TZNAME
# if _POSIX_VERSION < 198808 && !USG_COMPAT
#  define HAVE_TZNAME 0
# else
#  define HAVE_TZNAME 1
# endif
#endif

#ifndef ALTZONE
# if defined __sun || defined _M_XENIX
#  define ALTZONE 1
# else
#  define ALTZONE 0
# endif
#endif

#ifndef R_OK
#define R_OK	4
#endif /* !defined R_OK */

/* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
#define is_digit(c) ((unsigned)(c) - '0' <= 9)

/*
** Define HAVE_STDINT_H's default value here, rather than at the
** start, since __GLIBC__ and INTMAX_MAX's values depend on
** previously-included files.  glibc 2.1 and Solaris 10 and later have
** stdint.h, even with pre-C99 compilers.
*/
#ifndef HAVE_STDINT_H
#define HAVE_STDINT_H \