Adding upstream version 1.23.0.upstream/1.23.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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