system.h revision 116525
198944Sobrien/* system.h: system-dependent declarations; include this first. 298944Sobrien $Id: system.h,v 1.5 2003/03/22 17:40:39 karl Exp $ 398944Sobrien 498944Sobrien Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software 598944Sobrien Foundation, Inc. 698944Sobrien 798944Sobrien This program is free software; you can redistribute it and/or modify 898944Sobrien it under the terms of the GNU General Public License as published by 998944Sobrien the Free Software Foundation; either version 2, or (at your option) 1098944Sobrien any later version. 1198944Sobrien 1298944Sobrien This program is distributed in the hope that it will be useful, 1398944Sobrien but WITHOUT ANY WARRANTY; without even the implied warranty of 1498944Sobrien MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1598944Sobrien GNU General Public License for more details. 1698944Sobrien 1798944Sobrien You should have received a copy of the GNU General Public License 1898944Sobrien along with this program; if not, write to the Free Software Foundation, 1998944Sobrien Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 2098944Sobrien 2198944Sobrien#ifndef TEXINFO_SYSTEM_H 2298944Sobrien#define TEXINFO_SYSTEM_H 2398944Sobrien 2498944Sobrien#define _GNU_SOURCE 2598944Sobrien 2698944Sobrien#include <config.h> 2798944Sobrien 2898944Sobrien#ifdef MIKTEX 2998944Sobrien#include <gnu-miktex.h> 3098944Sobrien#define S_ISDIR(x) ((x)&_S_IFDIR) 3198944Sobrien#else 3298944Sobrien/* MiKTeX defines substring() in a separate DLL, where it has its 3398944Sobrien own __declspec declaration. We don't want to try to duplicate 3498944Sobrien this Microsoft-ism here. */ 3598944Sobrienextern char *substring (); 3698944Sobrien#endif 3798944Sobrien 3898944Sobrien/* <unistd.h> should be included before any preprocessor test 3998944Sobrien of _POSIX_VERSION. */ 4098944Sobrien#ifdef HAVE_UNISTD_H 4198944Sobrien#include <unistd.h> 4298944Sobrien#endif /* HAVE_UNISTD_H */ 4398944Sobrien 4498944Sobrien#include <stdio.h> 4598944Sobrien#include <sys/types.h> 4698944Sobrien#include <ctype.h> 4798944Sobrien 4898944Sobrien/* All systems nowadays probably have these functions, but ... */ 4998944Sobrien#ifdef HAVE_LOCALE_H 5098944Sobrien#include <locale.h> 5198944Sobrien#endif 5298944Sobrien#ifndef HAVE_SETLOCALE 5398944Sobrien#define setlocale(category,locale) /* empty */ 5498944Sobrien#endif 5598944Sobrien 5698944Sobrien/* For gettext (NLS). */ 5798944Sobrien#define const 5898944Sobrien#include "gettext.h" 5998944Sobrien#undef const 6098944Sobrien 6198944Sobrien#define _(String) gettext (String) 6298944Sobrien#define N_(String) (String) 6398944Sobrien 6498944Sobrien#ifndef HAVE_LC_MESSAGES 6598944Sobrien#define LC_MESSAGES (-1) 6698944Sobrien#endif 6798944Sobrien 6898944Sobrien#ifdef STDC_HEADERS 6998944Sobrien#define getopt system_getopt 7098944Sobrien#include <stdlib.h> 7198944Sobrien#undef getopt 7298944Sobrien#else 7398944Sobrienextern char *getenv (); 7498944Sobrien#endif 7598944Sobrien 7698944Sobrien/* Don't use bcopy! Use memmove if source and destination may overlap, 7798944Sobrien memcpy otherwise. */ 7898944Sobrien#ifdef HAVE_STRING_H 7998944Sobrien# if !STDC_HEADERS && HAVE_MEMORY_H 8098944Sobrien# include <memory.h> 8198944Sobrien# endif 8298944Sobrien# include <string.h> 8398944Sobrien#else 8498944Sobrien# include <strings.h> 8598944Sobrienchar *memchr (); 8698944Sobrien#endif 8798944Sobrien 8898944Sobrien#include <errno.h> 8998944Sobrien#ifndef errno 9098944Sobrienextern int errno; 9198944Sobrien#endif 9298944Sobrien#ifdef VMS 9398944Sobrien#include <perror.h> 9498944Sobrien#endif 9598944Sobrien 9698944Sobrien#ifndef HAVE_DECL_STRERROR 9798944Sobrienextern char *strerror (); 9898944Sobrien#endif 9998944Sobrien 10098944Sobrien#ifdef HAVE_LIMITS_H 10198944Sobrien#include <limits.h> 10298944Sobrien#endif 10398944Sobrien#ifndef PATH_MAX 10498944Sobrien#ifndef _POSIX_PATH_MAX 10598944Sobrien# define _POSIX_PATH_MAX 255 10698944Sobrien#endif 10798944Sobrien#define PATH_MAX _POSIX_PATH_MAX 10898944Sobrien#endif 10998944Sobrien 11098944Sobrien#ifndef HAVE_DECL_STRCASECMP 11198944Sobrienextern int strcasecmp (); 11298944Sobrien#endif 11398944Sobrien 11498944Sobrien#ifndef HAVE_DECL_STRNCASECMP 11598944Sobrienextern int strncasecmp (); 11698944Sobrien#endif 11798944Sobrien 11898944Sobrien#ifndef HAVE_DECL_STRCOLL 11998944Sobrienextern int strcoll (); 12098944Sobrien#endif 12198944Sobrien 12298944Sobrien#include <sys/stat.h> 12398944Sobrien#if STAT_MACROS_BROKEN 12498944Sobrien# undef S_ISDIR 12598944Sobrien#endif 12698944Sobrien#if !defined(S_ISDIR) && defined(S_IFDIR) 12798944Sobrien# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) 12898944Sobrien#endif 12998944Sobrien 13098944Sobrien#ifdef HAVE_SYS_FILE_H 13198944Sobrien#include <sys/file.h> 13298944Sobrien#endif /* HAVE_SYS_FILE_H */ 13398944Sobrien 13498944Sobrien#ifndef O_RDONLY 13598944Sobrien/* Since <fcntl.h> is POSIX, prefer that to <sys/fcntl.h>. 13698944Sobrien This also avoids some useless warnings on (at least) Linux. */ 13798944Sobrien#ifdef HAVE_FCNTL_H 13898944Sobrien#include <fcntl.h> 13998944Sobrien#else /* not HAVE_FCNTL_H */ 14098944Sobrien#ifdef HAVE_SYS_FCNTL_H 14198944Sobrien#include <sys/fcntl.h> 14298944Sobrien#endif /* not HAVE_SYS_FCNTL_H */ 14398944Sobrien#endif /* not HAVE_FCNTL_H */ 14498944Sobrien#endif /* not O_RDONLY */ 14598944Sobrien 14698944Sobrien/* MS-DOS and similar non-Posix systems have some peculiarities: 14798944Sobrien - they distinguish between binary and text files; 14898944Sobrien - they use both `/' and `\\' as directory separator in file names; 14998944Sobrien - they can have a drive letter X: prepended to a file name; 15098944Sobrien - they have a separate root directory on each drive; 15198944Sobrien - their filesystems are case-insensitive; 15298944Sobrien - directories in environment variables (like INFOPATH) are separated 15398944Sobrien by `;' rather than `:'; 15498944Sobrien - text files can have their lines ended either with \n or with \r\n pairs; 15598944Sobrien These are all parameterized here except the last, which is 15698944Sobrien handled by the source code as appropriate (mostly, in info/). */ 15798944Sobrien#ifndef O_BINARY 15898944Sobrien# ifdef _O_BINARY 15998944Sobrien# define O_BINARY _O_BINARY 16098944Sobrien# else 16198944Sobrien# define O_BINARY 0 16298944Sobrien# endif 16398944Sobrien#endif /* O_BINARY */ 16498944Sobrien 16598944Sobrien/* We'd like to take advantage of _doprnt if it's around, a la error.c, 16698944Sobrien but then we'd have no VA_SPRINTF. */ 16798944Sobrien#if HAVE_VPRINTF 16898944Sobrien# if __STDC__ 16998944Sobrien# include <stdarg.h> 17098944Sobrien# define VA_START(args, lastarg) va_start(args, lastarg) 17198944Sobrien# else 17298944Sobrien# include <varargs.h> 17398944Sobrien# define VA_START(args, lastarg) va_start(args) 17498944Sobrien# endif 17598944Sobrien# define VA_FPRINTF(file, fmt, ap) vfprintf (file, fmt, ap) 17698944Sobrien# define VA_SPRINTF(str, fmt, ap) vsprintf (str, fmt, ap) 17798944Sobrien#else /* not HAVE_VPRINTF */ 17898944Sobrien# define VA_START(args, lastarg) 17998944Sobrien# define va_alist a1, a2, a3, a4, a5, a6, a7, a8 18098944Sobrien# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8; 18198944Sobrien# define va_end(args) 18298944Sobrien#endif 18398944Sobrien 18498944Sobrien#if O_BINARY 18598944Sobrien# ifdef HAVE_IO_H 18698944Sobrien# include <io.h> 18798944Sobrien# endif 18898944Sobrien# ifdef __MSDOS__ 18998944Sobrien# include <limits.h> 19098944Sobrien# ifdef __DJGPP__ 19198944Sobrien# define HAVE_LONG_FILENAMES(dir) (pathconf (dir, _PC_NAME_MAX) > 12) 19298944Sobrien# define NULL_DEVICE "/dev/null" 19398944Sobrien# define DEFAULT_INFOPATH "c:/djgpp/info;/usr/local/info;/usr/info;." 19498944Sobrien# else /* !__DJGPP__ */ 19598944Sobrien# define HAVE_LONG_FILENAMES(dir) (0) 19698944Sobrien# define NULL_DEVICE "NUL" 19798944Sobrien# endif /* !__DJGPP__ */ 19898944Sobrien# define SET_SCREEN_SIZE_HELPER terminal_prep_terminal() 19998944Sobrien# define DEFAULT_INFO_PRINT_COMMAND ">PRN" 20098944Sobrien# else /* !__MSDOS__ */ 20198944Sobrien# define setmode(f,m) _setmode(f,m) 20298944Sobrien# define HAVE_LONG_FILENAMES(dir) (1) 20398944Sobrien# define NULL_DEVICE "NUL" 20498944Sobrien# endif /* !__MSDOS__ */ 20598944Sobrien# define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0) 20698944Sobrien# define FOPEN_RBIN "rb" 20798944Sobrien# define FOPEN_WBIN "wb" 20898944Sobrien# define IS_SLASH(c) ((c) == '/' || (c) == '\\') 20998944Sobrien# define HAVE_DRIVE(n) ((n)[0] && (n)[1] == ':') 21098944Sobrien# define IS_ABSOLUTE(n) (IS_SLASH((n)[0]) || ((n)[0] && (n)[1] == ':')) 21198944Sobrien# define FILENAME_CMP strcasecmp 21298944Sobrien# define FILENAME_CMPN strncasecmp 21398944Sobrien# define PATH_SEP ";" 21498944Sobrien# define STRIP_DOT_EXE 1 21598944Sobrien# define DEFAULT_TMPDIR "c:/" 21698944Sobrien# define PIPE_USE_FORK 0 21798944Sobrien#else /* not O_BINARY */ 21898944Sobrien# define SET_BINARY(f) (void)0 21998944Sobrien# define FOPEN_RBIN "r" 22098944Sobrien# define FOPEN_WBIN "w" 22198944Sobrien# define IS_SLASH(c) ((c) == '/') 22298944Sobrien# define HAVE_DRIVE(n) (0) 22398944Sobrien# define IS_ABSOLUTE(n) ((n)[0] == '/') 22498944Sobrien# define FILENAME_CMP strcmp 22598944Sobrien# define FILENAME_CMPN strncmp 22698944Sobrien# define HAVE_LONG_FILENAMES(dir) (1) 22798944Sobrien# define PATH_SEP ":" 22898944Sobrien# define STRIP_DOT_EXE 0 22998944Sobrien# ifdef VMS 23098944Sobrien# define DEFAULT_TMPDIR "sys$scratch:" 23198944Sobrien# else 23298944Sobrien# define DEFAULT_TMPDIR "/tmp/" 23398944Sobrien# endif 23498944Sobrien# define NULL_DEVICE "/dev/null" 23598944Sobrien# define PIPE_USE_FORK 1 23698944Sobrien#endif /* not O_BINARY */ 23798944Sobrien 23898944Sobrien/* DJGPP supports /dev/null, which is okay for Unix aficionados, 23998944Sobrien shell scripts and Makefiles, but interactive DOS die-hards 24098944Sobrien would probably want to have NUL as well. */ 24198944Sobrien#ifdef __DJGPP__ 24298944Sobrien# define ALSO_NULL_DEVICE "NUL" 24398944Sobrien#else 24498944Sobrien# define ALSO_NULL_DEVICE "" 24598944Sobrien#endif 24698944Sobrien 24798944Sobrien#ifdef HAVE_PWD_H 24898944Sobrien#include <pwd.h> 24998944Sobrien#endif 25098944Sobrien/* Some systems don't declare this function in pwd.h. */ 25198944Sobrienstruct passwd *getpwnam (); 25298944Sobrien 25398944Sobrien/* Our library routines not included in any system library. */ 25498944Sobrienextern void *xmalloc (), *xrealloc (); 25598944Sobrienextern char *xstrdup (); 25698944Sobrienextern void xexit (); 25798944Sobrien 25898944Sobrien/* For convenience. */ 25998944Sobrien#define STREQ(s1,s2) (strcmp (s1, s2) == 0) 26098944Sobrien 26198944Sobrien/* We don't need anything fancy. If we did need something fancy, gnulib 26298944Sobrien has it. */ 26398944Sobrien#ifdef MIN 26498944Sobrien#undef MIN 26598944Sobrien#endif 26698944Sobrien#define MIN(a,b) ((a) < (b) ? (a) : (b)) 26798944Sobrien#ifdef MAX 26898944Sobrien#undef MAX 26998944Sobrien#endif 27098944Sobrien#define MAX(a,b) ((a) > (b) ? (a) : (b)) 27198944Sobrien 27298944Sobrien#endif /* TEXINFO_SYSTEM_H */ 27398944Sobrien