1 /* system.h: system-dependent declarations; include this first. 2 $Id: system.h,v 1.5 2006/07/17 16:12:36 espie Exp $ 3 4 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software 5 Foundation, Inc. 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2, or (at your option) 10 any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software Foundation, 19 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 20 21 #ifndef TEXINFO_SYSTEM_H 22 #define TEXINFO_SYSTEM_H 23 24 #define _GNU_SOURCE 25 26 #include <config.h> 27 28 #ifdef MIKTEX 29 #include <gnu-miktex.h> 30 #define S_ISDIR(x) ((x)&_S_IFDIR) 31 #else 32 /* MiKTeX defines substring() in a separate DLL, where it has its 33 own __declspec declaration. We don't want to try to duplicate 34 this Microsoft-ism here. */ 35 extern char *substring (const char *, const char *); 36 #endif 37 38 /* We follow the order of header inclusion from Autoconf's 39 ac_includes_default, more or less. */ 40 #include <stdio.h> 41 #include <sys/types.h> 42 #include <ctype.h> 43 44 /* All systems nowadays probably have these functions, but ... */ 45 #ifdef HAVE_LOCALE_H 46 #include <locale.h> 47 #endif 48 #ifndef HAVE_SETLOCALE 49 #define setlocale(category,locale) /* empty */ 50 #endif 51 52 /* For gettext (NLS). */ 53 #define const 54 #include "gettext.h" 55 #undef const 56 57 #define _(String) gettext (String) 58 #define N_(String) (String) 59 60 #ifdef STDC_HEADERS 61 #define getopt system_getopt 62 #include <stdlib.h> 63 #undef getopt 64 #else 65 extern char *getenv (); 66 #endif 67 68 /* Don't use bcopy! Use memmove if source and destination may overlap, 69 memcpy otherwise. */ 70 #if HAVE_STRING_H 71 # if !STDC_HEADERS && HAVE_MEMORY_H 72 # include <memory.h> 73 # endif 74 # include <string.h> 75 #endif 76 77 #if HAVE_STRINGS_H 78 /* Always include <strings.h> if we have it. This is because that's 79 what Autoconf's AC_CHECK_DECL does. On IBM AIX 4.2, strncasecmp is 80 only declared in strings.h. */ 81 # include <strings.h> 82 #endif 83 84 #if !HAVE_STRNCASECMP || !HAVE_STRCASECMP 85 # include "strcase.h" 86 #endif 87 88 #if !HAVE_DECL_MEMCHR 89 char *memchr (); 90 #endif 91 92 /* <unistd.h> defines _POSIX_VERSION, but Paul Eggert points out that is 93 only supposed to be used in user code, not other system headers. */ 94 #ifdef HAVE_UNISTD_H 95 #include <unistd.h> 96 #endif /* HAVE_UNISTD_H */ 97 98 #include <errno.h> 99 #ifndef errno 100 extern int errno; 101 #endif 102 #ifdef VMS 103 #include <perror.h> 104 #endif 105 106 #ifndef HAVE_DECL_STRERROR 107 extern char *strerror (); 108 #endif 109 110 #ifdef HAVE_LIMITS_H 111 #include <limits.h> 112 #endif 113 #ifndef PATH_MAX 114 #ifndef _POSIX_PATH_MAX 115 # define _POSIX_PATH_MAX 255 116 #endif 117 #define PATH_MAX _POSIX_PATH_MAX 118 #endif 119 120 #ifndef HAVE_DECL_STRCASECMP 121 extern int strcasecmp (); 122 #endif 123 124 #ifndef HAVE_DECL_STRNCASECMP 125 extern int strncasecmp (); 126 #endif 127 128 #ifndef HAVE_DECL_STRCOLL 129 extern int strcoll (); 130 #endif 131 132 #include <sys/stat.h> 133 #if STAT_MACROS_BROKEN 134 # undef S_ISDIR 135 #endif 136 #if !defined(S_ISDIR) && defined(S_IFDIR) 137 # define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) 138 #endif 139 140 #ifdef HAVE_SYS_FILE_H 141 #include <sys/file.h> 142 #endif /* HAVE_SYS_FILE_H */ 143 144 #ifndef O_RDONLY 145 /* Since <fcntl.h> is POSIX, prefer that to <sys/fcntl.h>. 146 This also avoids some useless warnings on (at least) Linux. */ 147 #ifdef HAVE_FCNTL_H 148 #include <fcntl.h> 149 #else /* not HAVE_FCNTL_H */ 150 #ifdef HAVE_SYS_FCNTL_H 151 #include <sys/fcntl.h> 152 #endif /* not HAVE_SYS_FCNTL_H */ 153 #endif /* not HAVE_FCNTL_H */ 154 #endif /* not O_RDONLY */ 155 156 /* MS-DOS and similar non-Posix systems have some peculiarities: 157 - they distinguish between binary and text files; 158 - they use both `/' and `\\' as directory separator in file names; 159 - they can have a drive letter X: prepended to a file name; 160 - they have a separate root directory on each drive; 161 - their filesystems are case-insensitive; 162 - directories in environment variables (like INFOPATH) are separated 163 by `;' rather than `:'; 164 - text files can have their lines ended either with \n or with \r\n pairs; 165 These are all parameterized here except the last, which is 166 handled by the source code as appropriate (mostly, in info/). */ 167 #ifndef O_BINARY 168 # ifdef _O_BINARY 169 # define O_BINARY _O_BINARY 170 # else 171 # define O_BINARY 0 172 # endif 173 #endif /* O_BINARY */ 174 175 /* We'd like to take advantage of _doprnt if it's around, a la error.c, 176 but then we'd have no VA_SPRINTF. */ 177 #if HAVE_VPRINTF 178 # if __STDC__ 179 # include <stdarg.h> 180 # define VA_START(args, lastarg) va_start(args, lastarg) 181 # else 182 # include <varargs.h> 183 # define VA_START(args, lastarg) va_start(args) 184 # endif 185 # define VA_FPRINTF(file, fmt, ap) vfprintf (file, fmt, ap) 186 # define VA_SPRINTF(str, fmt, ap) vsprintf (str, fmt, ap) 187 #else /* not HAVE_VPRINTF */ 188 # define VA_START(args, lastarg) 189 # define va_alist a1, a2, a3, a4, a5, a6, a7, a8 190 # define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; 191 # define va_end(args) 192 #endif 193 194 #if O_BINARY 195 # ifdef HAVE_IO_H 196 # include <io.h> 197 # endif 198 # ifdef __MSDOS__ 199 # include <limits.h> 200 # ifdef __DJGPP__ 201 # define HAVE_LONG_FILENAMES(dir) (pathconf (dir, _PC_NAME_MAX) > 12) 202 # define NULL_DEVICE "/dev/null" 203 # define DEFAULT_INFOPATH "c:/djgpp/info;/usr/local/info;/usr/info;." 204 /* DJGPP supports /dev/null, which is okay for Unix aficionados, 205 shell scripts and Makefiles, but interactive DOS die-hards 206 would probably want to have NUL as well. */ 207 # define ALSO_NULL_DEVICE "NUL" 208 # else /* O_BINARY && !__DJGPP__ */ 209 # define HAVE_LONG_FILENAMES(dir) (0) 210 # define NULL_DEVICE "NUL" 211 # endif /* O_BINARY && !__DJGPP__ */ 212 # define SET_SCREEN_SIZE_HELPER terminal_prep_terminal() 213 # define DEFAULT_INFO_PRINT_COMMAND ">PRN" 214 # else /* O_BINARY && !__MSDOS__ */ 215 # define setmode(f,m) _setmode(f,m) 216 # define HAVE_LONG_FILENAMES(dir) (1) 217 # define NULL_DEVICE "NUL" 218 # endif /* O_BINARY && !__MSDOS__ */ 219 # ifdef __CYGWIN__ 220 # define DEFAULT_TMPDIR "/tmp/" 221 # define PATH_SEP ":" 222 # else /* O_BINARY && !__CYGWIN__ */ 223 # define DEFAULT_TMPDIR "c:/" 224 # define PATH_SEP ";" 225 # endif /* O_BINARY && !__CYGWIN__ */ 226 /* Back to any O_BINARY system. */ 227 # define FILENAME_CMP strcasecmp 228 # define FILENAME_CMPN strncasecmp 229 # define FOPEN_RBIN "rb" 230 # define FOPEN_WBIN "wb" 231 # define HAVE_DRIVE(n) ((n)[0] && (n)[1] == ':') 232 # define IS_SLASH(c) ((c) == '/' || (c) == '\\') 233 # define IS_ABSOLUTE(n) (IS_SLASH((n)[0]) || ((n)[0] && (n)[1] == ':')) 234 # define PIPE_USE_FORK 0 235 # define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0) 236 # define STRIP_DOT_EXE 1 237 238 #else /* not O_BINARY, i.e., Unix */ 239 # define SET_BINARY(f) (void)0 240 # define FOPEN_RBIN "r" 241 # define FOPEN_WBIN "w" 242 # define IS_SLASH(c) ((c) == '/') 243 # define HAVE_DRIVE(n) (0) 244 # define IS_ABSOLUTE(n) ((n)[0] == '/') 245 # define FILENAME_CMP strcmp 246 # define FILENAME_CMPN strncmp 247 # define HAVE_LONG_FILENAMES(dir) (1) 248 # define PATH_SEP ":" 249 # define STRIP_DOT_EXE 0 250 # ifdef VMS 251 # define DEFAULT_TMPDIR "sys$scratch:" 252 # else 253 # define DEFAULT_TMPDIR "/tmp/" 254 # endif 255 # define NULL_DEVICE "/dev/null" 256 # define PIPE_USE_FORK 1 257 #endif /* not O_BINARY */ 258 259 /* Everything but DJGPP. */ 260 #ifndef ALSO_NULL_DEVICE 261 # define ALSO_NULL_DEVICE "" 262 #endif 263 264 #ifdef HAVE_PWD_H 265 #include <pwd.h> 266 #endif 267 /* Some systems don't declare this function in pwd.h. */ 268 struct passwd *getpwnam (const char *name); 269 270 /* Our library routines not included in any system library. */ 271 extern void *xmalloc (size_t), *xrealloc (void *, size_t); 272 extern char *xstrdup (const char *); 273 extern void xexit (int); 274 275 /* For convenience. */ 276 #define STREQ(s1,s2) (strcmp (s1, s2) == 0) 277 #define STRCASEEQ(s1,s2) (strcasecmp (s1, s2) == 0) 278 #define STRNCASEEQ(s1,s2,n) (strncasecmp (s1, s2, n) == 0) 279 280 /* We don't need anything fancy. If we did need something fancy, gnulib 281 has it. */ 282 #ifdef MIN 283 #undef MIN 284 #endif 285 #define MIN(a,b) ((a) < (b) ? (a) : (b)) 286 #ifdef MAX 287 #undef MAX 288 #endif 289 #define MAX(a,b) ((a) > (b) ? (a) : (b)) 290 291 #endif /* TEXINFO_SYSTEM_H */ 292