ce4783ce76
Well, kinda... localtime.c still contains a bunch of Android-specific hacks, as does strftime.c. But the other files are now exactly the same as upstream. This catches up with several years of bug fixes, and fixes most of the compiler warnings that were in this code. (Just two remain.) Bug: 1744909 Change-Id: I2ddfecb6fd408c847397c17afb0fff859e27feef
401 lines
9.4 KiB
C
401 lines
9.4 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_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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#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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#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__ + (0 < __GLIBC_MINOR__)))
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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 PRIdMAX "lld"
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# else
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typedef long intmax_t;
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# define PRIdMAX "ld"
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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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#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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#else
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# define ATTRIBUTE_CONST /* empty */
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# define ATTRIBUTE_PURE /* 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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/*
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** Since the definition of TYPE_INTEGRAL contains floating point numbers,
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** it cannot be used in preprocessor directives.
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*/
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#ifndef TYPE_INTEGRAL
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#define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
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#endif /* !defined TYPE_INTEGRAL */
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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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#ifndef GNUC_or_lint
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#ifdef lint
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#define GNUC_or_lint
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#endif /* defined lint */
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#ifndef lint
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#ifdef __GNUC__
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#define GNUC_or_lint
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#endif /* defined __GNUC__ */
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#endif /* !defined lint */
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#endif /* !defined GNUC_or_lint */
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#ifndef INITIALIZE
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#ifdef GNUC_or_lint
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#define INITIALIZE(x) ((x) = 0)
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#endif /* defined GNUC_or_lint */
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#ifndef GNUC_or_lint
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#define INITIALIZE(x)
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#endif /* !defined GNUC_or_lint */
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#endif /* !defined INITIALIZE */
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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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#ifndef TZ_DOMAIN
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#define TZ_DOMAIN "tz"
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#endif /* !defined TZ_DOMAIN */
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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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