Minix: src/commands/zoneinfo/private.h Source File

00001 #ifndef PRIVATE_H
00002 
00003 #define PRIVATE_H
00004 
00005 /*
00006 ** This file is in the public domain, so clarified as of
00007 ** 1996-06-05 by Arthur David Olson.
00008 */
00009 
00010 /*
00011 ** This header is for use ONLY with the time conversion code.
00012 ** There is no guarantee that it will remain unchanged,
00013 ** or that it will remain at all.
00014 ** Do NOT copy it to any system include directory.
00015 ** Thank you!
00016 */
00017 
00018 /*
00019 ** ID
00020 */
00021 
00022 #ifndef lint
00023 #ifndef NOID
00024 static char     privatehid[] = "@(#)private.h   7.55";
00025 #endif /* !defined NOID */
00026 #endif /* !defined lint */
00027 
00028 #define GRANDPARENTED   "Local time zone must be set--see zic manual page"
00029 
00030 /*
00031 ** Defaults for preprocessor symbols.
00032 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
00033 */
00034 
00035 #ifndef HAVE_ADJTIME
00036 #define HAVE_ADJTIME            1
00037 #endif /* !defined HAVE_ADJTIME */
00038 
00039 #ifndef HAVE_GETTEXT
00040 #define HAVE_GETTEXT            0
00041 #endif /* !defined HAVE_GETTEXT */
00042 
00043 #ifndef HAVE_INCOMPATIBLE_CTIME_R
00044 #define HAVE_INCOMPATIBLE_CTIME_R       0
00045 #endif /* !defined INCOMPATIBLE_CTIME_R */
00046 
00047 #ifndef HAVE_SETTIMEOFDAY
00048 #define HAVE_SETTIMEOFDAY       3
00049 #endif /* !defined HAVE_SETTIMEOFDAY */
00050 
00051 #ifndef HAVE_STRERROR
00052 #define HAVE_STRERROR           1
00053 #endif /* !defined HAVE_STRERROR */
00054 
00055 #ifndef HAVE_SYMLINK
00056 #define HAVE_SYMLINK            1
00057 #endif /* !defined HAVE_SYMLINK */
00058 
00059 #ifndef HAVE_SYS_STAT_H
00060 #define HAVE_SYS_STAT_H         1
00061 #endif /* !defined HAVE_SYS_STAT_H */
00062 
00063 #ifndef HAVE_SYS_WAIT_H
00064 #define HAVE_SYS_WAIT_H         1
00065 #endif /* !defined HAVE_SYS_WAIT_H */
00066 
00067 #ifndef HAVE_UNISTD_H
00068 #define HAVE_UNISTD_H           1
00069 #endif /* !defined HAVE_UNISTD_H */
00070 
00071 #ifndef HAVE_UTMPX_H
00072 #define HAVE_UTMPX_H            0
00073 #endif /* !defined HAVE_UTMPX_H */
00074 
00075 #ifndef LOCALE_HOME
00076 #define LOCALE_HOME             "/usr/lib/locale"
00077 #endif /* !defined LOCALE_HOME */
00078 
00079 #if HAVE_INCOMPATIBLE_CTIME_R
00080 #define asctime_r _incompatible_asctime_r
00081 #define ctime_r _incompatible_ctime_r
00082 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
00083 
00084 void logwtmp(char *, char *, char *);
00085 
00086 /*
00087 ** Nested includes
00088 */
00089 
00090 #include "sys/types.h"  /* for time_t */
00091 #include "stdio.h"
00092 #include "errno.h"
00093 #include "string.h"
00094 #include "limits.h"     /* for CHAR_BIT */
00095 #include "time.h"
00096 #include "stdlib.h"
00097 
00098 #if HAVE_GETTEXT
00099 #include "libintl.h"
00100 #endif /* HAVE_GETTEXT */
00101 
00102 #if HAVE_SYS_WAIT_H
00103 #include <sys/wait.h>   /* for WIFEXITED and WEXITSTATUS */
00104 #endif /* HAVE_SYS_WAIT_H */
00105 
00106 #ifndef WIFEXITED
00107 #define WIFEXITED(status)       (((status) & 0xff) == 0)
00108 #endif /* !defined WIFEXITED */
00109 #ifndef WEXITSTATUS
00110 #define WEXITSTATUS(status)     (((status) >> 8) & 0xff)
00111 #endif /* !defined WEXITSTATUS */
00112 
00113 #if HAVE_UNISTD_H
00114 #include "unistd.h"     /* for F_OK and R_OK */
00115 #endif /* HAVE_UNISTD_H */
00116 
00117 #if !HAVE_UNISTD_H
00118 #ifndef F_OK
00119 #define F_OK    0
00120 #endif /* !defined F_OK */
00121 #ifndef R_OK
00122 #define R_OK    4
00123 #endif /* !defined R_OK */
00124 #endif /* !HAVE_UNISTD_H */
00125 
00126 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
00127 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
00128 
00129 /*
00130 ** Workarounds for compilers/systems.
00131 */
00132 
00133 /*
00134 ** SunOS 4.1.1 cc lacks prototypes.
00135 */
00136 
00137 #ifndef P
00138 #if __STDC__
00139 #define P(x)    x
00140 #else /* !__STDC__ */
00141 #define P(x)    ()
00142 #endif /* !__STDC__ */
00143 #endif /* !defined P */
00144 
00145 /*
00146 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
00147 */
00148 
00149 #ifndef EXIT_SUCCESS
00150 #define EXIT_SUCCESS    0
00151 #endif /* !defined EXIT_SUCCESS */
00152 
00153 /*
00154 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
00155 */
00156 
00157 #ifndef EXIT_FAILURE
00158 #define EXIT_FAILURE    1
00159 #endif /* !defined EXIT_FAILURE */
00160 
00161 /*
00162 ** SunOS 4.1.1 headers lack FILENAME_MAX.
00163 */
00164 
00165 #ifndef FILENAME_MAX
00166 
00167 #ifndef MAXPATHLEN
00168 #ifdef unix
00169 #include "sys/param.h"
00170 #endif /* defined unix */
00171 #endif /* !defined MAXPATHLEN */
00172 
00173 #ifdef MAXPATHLEN
00174 #define FILENAME_MAX    MAXPATHLEN
00175 #endif /* defined MAXPATHLEN */
00176 #ifndef MAXPATHLEN
00177 #define FILENAME_MAX    1024            /* Pure guesswork */
00178 #endif /* !defined MAXPATHLEN */
00179 
00180 #endif /* !defined FILENAME_MAX */
00181 
00182 /*
00183 ** SunOS 4.1.1 libraries lack remove.
00184 */
00185 
00186 #ifndef remove
00187 extern int      unlink P((const char * filename));
00188 #define remove  unlink
00189 #endif /* !defined remove */
00190 
00191 /*
00192 ** Some ancient errno.h implementations don't declare errno.
00193 ** But some newer errno.h implementations define it as a macro.
00194 ** Fix the former without affecting the latter.
00195 */
00196 
00197 #ifndef errno
00198 extern int errno;
00199 #endif /* !defined errno */
00200 
00201 /*
00202 ** Some time.h implementations don't declare asctime_r.
00203 ** Others might define it as a macro.
00204 ** Fix the former without affecting the latter.
00205 */
00206 
00207 #ifndef asctime_r
00208 extern char *   asctime_r(register const struct tm *, char *);
00209 #endif
00210 
00211 /*
00212 ** Private function declarations.
00213 */
00214 
00215 char *  icalloc P((int nelem, int elsize));
00216 char *  icatalloc P((char * old, const char * new));
00217 char *  icpyalloc P((const char * string));
00218 char *  imalloc P((int n));
00219 void *  irealloc P((void * pointer, int size));
00220 void    icfree P((char * pointer));
00221 void    ifree P((char * pointer));
00222 const char *scheck P((const char *string, const char *format));
00223 
00224 /*
00225 ** Finally, some convenience items.
00226 */
00227 
00228 #ifndef TRUE
00229 #define TRUE    1
00230 #endif /* !defined TRUE */
00231 
00232 #ifndef FALSE
00233 #define FALSE   0
00234 #endif /* !defined FALSE */
00235 
00236 #ifndef TYPE_BIT
00237 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
00238 #endif /* !defined TYPE_BIT */
00239 
00240 #ifndef TYPE_SIGNED
00241 #define TYPE_SIGNED(type) (((type) -1) < 0)
00242 #endif /* !defined TYPE_SIGNED */
00243 
00244 /*
00245 ** Since the definition of TYPE_INTEGRAL contains floating point numbers,
00246 ** it cannot be used in preprocessor directives.
00247 */
00248 
00249 #ifndef TYPE_INTEGRAL
00250 #define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
00251 #endif /* !defined TYPE_INTEGRAL */
00252 
00253 #ifndef INT_STRLEN_MAXIMUM
00254 /*
00255 ** 302 / 1000 is log10(2.0) rounded up.
00256 ** Subtract one for the sign bit if the type is signed;
00257 ** add one for integer division truncation;
00258 ** add one more for a minus sign if the type is signed.
00259 */
00260 #define INT_STRLEN_MAXIMUM(type) \
00261         ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
00262         1 + TYPE_SIGNED(type))
00263 #endif /* !defined INT_STRLEN_MAXIMUM */
00264 
00265 /*
00266 ** INITIALIZE(x)
00267 */
00268 
00269 #ifndef GNUC_or_lint
00270 #ifdef lint
00271 #define GNUC_or_lint
00272 #endif /* defined lint */
00273 #ifndef lint
00274 #ifdef __GNUC__
00275 #define GNUC_or_lint
00276 #endif /* defined __GNUC__ */
00277 #endif /* !defined lint */
00278 #endif /* !defined GNUC_or_lint */
00279 
00280 #ifndef INITIALIZE
00281 #ifdef GNUC_or_lint
00282 #define INITIALIZE(x)   ((x) = 0)
00283 #endif /* defined GNUC_or_lint */
00284 #ifndef GNUC_or_lint
00285 #define INITIALIZE(x)
00286 #endif /* !defined GNUC_or_lint */
00287 #endif /* !defined INITIALIZE */
00288 
00289 /*
00290 ** For the benefit of GNU folk...
00291 ** `_(MSGID)' uses the current locale's message library string for MSGID.
00292 ** The default is to use gettext if available, and use MSGID otherwise.
00293 */
00294 
00295 #ifndef _
00296 #if HAVE_GETTEXT
00297 #define _(msgid) gettext(msgid)
00298 #else /* !HAVE_GETTEXT */
00299 #define _(msgid) msgid
00300 #endif /* !HAVE_GETTEXT */
00301 #endif /* !defined _ */
00302 
00303 #ifndef TZ_DOMAIN
00304 #define TZ_DOMAIN "tz"
00305 #endif /* !defined TZ_DOMAIN */
00306 
00307 #if HAVE_INCOMPATIBLE_CTIME_R
00308 #undef asctime_r
00309 #undef ctime_r
00310 char *asctime_r P((struct tm const *, char *));
00311 char *ctime_r P((time_t const *, char *));
00312 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
00313 
00314 /*
00315 ** UNIX was a registered trademark of The Open Group in 2003.
00316 */
00317 
00318 #endif /* !defined PRIVATE_H */