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Diffstat (limited to 'src/include/nonposix.h')
| -rw-r--r-- | src/include/nonposix.h | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/src/include/nonposix.h b/src/include/nonposix.h new file mode 100644 index 0000000..6a61009 --- /dev/null +++ b/src/include/nonposix.h @@ -0,0 +1,230 @@ +/* -*- C -*- */ +/* Copyright (C) 2000-2020 Free Software Foundation, Inc. + Written by Eli Zaretskii (eliz@is.elta.co.il) + +This file is part of groff. + +groff is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation, either version 3 of the License, or +(at your option) any later version. + +groff is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. */ + +/* This header file compartmentalize all idiosyncrasies of non-Posix + systems, such as MS-DOS, MS-Windows, etc. It should be loaded after + the system headers like stdio.h to protect against warnings and error + messages w.r.t. redefining macros. */ + +#if defined _MSC_VER +# ifndef _WIN32 +# define _WIN32 +# endif +#endif + +#if defined(__MSDOS__) || defined(__EMX__) \ + || (defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__)) + +/* Binary I/O nuisances. */ +# include <fcntl.h> +# include <io.h> +# ifdef HAVE_UNISTD_H +# include <unistd.h> +# endif +# ifndef STDIN_FILENO +# define STDIN_FILENO 0 +# define STDOUT_FILENO 1 +# define STDERR_FILENO 2 +# endif +# ifdef HAVE_DIRECT_H +# include <direct.h> +# endif +# ifdef HAVE_PROCESS_H +# include <process.h> +# endif +# if defined(_MSC_VER) || defined(__MINGW32__) +# define POPEN_RT "rt" +# define POPEN_WT "wt" +# define popen(c,m) _popen(c,m) +# define pclose(p) _pclose(p) +# define pipe(pfd) _pipe((pfd),0,_O_BINARY|_O_NOINHERIT) +# define mkdir(p,m) _mkdir(p) +# define setmode(f,m) _setmode(f,m) +# define WAIT(s,p,m) _cwait(s,p,m) +# define creat(p,m) _creat(p,m) +# define read(f,b,s) _read(f,b,s) +# define write(f,b,s) _write(f,b,s) +# define dup(f) _dup(f) +# define dup2(f1,f2) _dup2(f1,f2) +# define close(f) _close(f) +# define isatty(f) _isatty(f) +# define access(p,m) _access(p,m) +# endif +# define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0) +# define FOPEN_RB "rb" +# define FOPEN_WB "wb" +# define FOPEN_RWB "wb+" +# ifndef O_BINARY +# ifdef _O_BINARY +# define O_BINARY (_O_BINARY) +# endif +# endif + +/* The system shell. Groff assumes a Unixy shell, but non-Posix + systems don't have standard places where it lives, and might not + have it installed to begin with. We want to give them some leeway. */ +# ifdef __EMX__ +# define getcwd(b,s) _getcwd2(b,s) +# else +# define BSHELL (system_shell_name()) +# define BSHELL_DASH_C (system_shell_dash_c()) +# define IS_BSHELL(s) (is_system_shell(s)) +# endif + +/* The separator for directories in PATH and other environment + variables. */ +# define PATH_SEP ";" +# define PATH_SEP_CHAR ';' + +/* Characters that separate directories in a path name. */ +# define DIR_SEPS "/\\:" + +/* How to tell if the argument is an absolute file name. */ +# define IS_ABSOLUTE(f) \ + ((f)[0] == '/' || (f)[0] == '\\' || (f)[0] && (f)[1] == ':') + +/* The executable extension. */ +# define EXE_EXT ".exe" + +/* Possible executable extensions. */ +# define PATH_EXT ".com;.exe;.bat;.cmd" + +/* The system null device. */ +# define NULL_DEV "NUL" + +/* The default place to create temporary files. */ +# ifndef P_tmpdir +# ifdef _P_tmpdir +# define P_tmpdir _P_tmpdir +# else +# define P_tmpdir "c:/temp" +# endif +# endif + +/* Prototypes. */ +# ifdef __cplusplus + extern "C" { +# endif + char * system_shell_name(void); + const char * system_shell_dash_c(void); + int is_system_shell(const char *); +# ifdef __cplusplus + } +# endif + +#endif + +#if defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__) +/* Win32 implementations which use the Microsoft runtime library + * are prone to hanging when a pipe reader quits with unread data in the pipe. + * 'gtroff' avoids this, by invoking 'FLUSH_INPUT_PIPE()', defined as ... */ +# define FLUSH_INPUT_PIPE(fd) \ + do if (!isatty(fd)) \ + { \ + char drain[BUFSIZ]; \ + while (read(fd, drain, sizeof(drain)) > 0) \ + ; \ + } while (0) + +/* The Microsoft runtime library also has a broken argument passing mechanism, + * which may result in improper grouping of arguments passed to a child process + * by the 'spawn()' family of functions. In 'groff', only the 'spawnvp()' + * function is affected; we work around this defect, by substituting a + * wrapper function in place of 'spawnvp()' calls. */ + +# ifdef __cplusplus + extern "C" { +# endif + int spawnvp_wrapper(int, char *, char **); +# ifdef __cplusplus + } +# endif +# ifndef SPAWN_FUNCTION_WRAPPERS +# undef spawnvp +# define spawnvp spawnvp_wrapper +# undef _spawnvp +# define _spawnvp spawnvp +# endif /* SPAWN_FUNCTION_WRAPPERS */ + +#else +/* Other implementations do not suffer from Microsoft runtime bugs, + * but 'gtroff' requires a dummy definition for FLUSH_INPUT_PIPE() */ +# define FLUSH_INPUT_PIPE(fd) do {} while(0) +#endif + +/* Defaults, for Posix systems. */ + +#ifndef SET_BINARY +# define SET_BINARY(f) do {} while(0) +#endif +#ifndef FOPEN_RB +# define FOPEN_RB "r" +#endif +#ifndef FOPEN_WB +# define FOPEN_WB "w" +#endif +#ifndef FOPEN_RWB +# define FOPEN_RWB "w+" +#endif +#ifndef POPEN_RT +# define POPEN_RT "r" +#endif +#ifndef POPEN_WT +# define POPEN_WT "w" +#endif +#ifndef O_BINARY +# define O_BINARY 0 +#endif +#ifndef BSHELL +# define BSHELL "/bin/sh" +#endif +#ifndef BSHELL_DASH_C +# define BSHELL_DASH_C "-c" +#endif +#ifndef IS_BSHELL +# define IS_BSHELL(s) ((s) && strcmp(s,BSHELL) == 0) +#endif +#ifndef PATH_SEP +# define PATH_SEP ":" +# define PATH_SEP_CHAR ':' +#endif +#ifndef DIR_SEPS +# define DIR_SEPS "/" +#endif +#ifndef IS_ABSOLUTE +# define IS_ABSOLUTE(f) ((f)[0] == '/') +#endif +#ifndef EXE_EXT +# define EXE_EXT "" +#endif +#ifndef PATH_EXT +# define PATH_EXT "" +#endif +#ifndef NULL_DEV +# define NULL_DEV "/dev/null" +#endif +#ifndef GS_NAME +# define GS_NAME "gs" +#endif +#ifndef WAIT +# define WAIT(s,p,m) wait(s) +#endif +#ifndef _WAIT_CHILD +# define _WAIT_CHILD 0 +#endif |