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- /*
- * tkPort.h --
- *
- * This file is included by all of the Tk C files. It contains
- * information that may be configuration-dependent, such as
- * #includes for system include files and a few other things.
- *
- * Copyright (c) 1991-1993 The Regents of the University of California.
- * Copyright (c) 1994 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * @(#) tkPort.h 1.5 95/05/11 10:49:35
- */
-
- #ifndef _TKPORT
- #define _TKPORT
-
- /*
- * Macro to use instead of "void" for arguments that must have
- * type "void *" in ANSI C; maps them to type "char *" in
- * non-ANSI systems. This macro may be used in some of the include
- * files below, which is why it is defined here.
- */
-
- #ifndef VOID
- # ifdef __STDC__
- # define VOID void
- # else
- # define VOID char
- # endif
- #endif
-
- #include <stdio.h>
- #include <ctype.h>
- #include <fcntl.h>
- #ifdef HAVE_LIMITS_H
- # include <limits.h>
- #else
- # include "compat/limits.h"
- #endif
- #include <math.h>
- #include <pwd.h>
- #ifdef NO_STDLIB_H
- # include "compat/stdlib.h"
- #else
- # include <stdlib.h>
- #endif
- #include <string.h>
- #include <sys/types.h>
- #include <sys/file.h>
- #ifdef HAVE_SYS_SELECT_H
- # include <sys/select.h>
- #endif
- #include <sys/stat.h>
- #include <sys/time.h>
- #ifndef _TCL
- # include <tcl.h>
- #endif
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #else
- # include "compat/unistd.h"
- #endif
- #include <X11/Xlib.h>
- #include <X11/cursorfont.h>
- #include <X11/keysym.h>
- #include <X11/Xatom.h>
- #include <X11/Xproto.h>
- #include <X11/Xresource.h>
- #include <X11/Xutil.h>
-
- /*
- * Not all systems declare the errno variable in errno.h. so this
- * file does it explicitly.
- */
-
- extern int errno;
-
- /*
- * Define OPEN_MAX if it isn't already defined for this system.
- */
-
- #ifndef OPEN_MAX
- # define OPEN_MAX 256
- #endif
-
- /*
- * The following macro defines the type of the mask arguments to
- * select:
- */
-
- #ifndef NO_FD_SET
- # define SELECT_MASK fd_set
- #else
- # ifndef _AIX
- typedef long fd_mask;
- # endif
- # if defined(_IBMR2)
- # define SELECT_MASK void
- # else
- # define SELECT_MASK int
- # endif
- #endif
-
- /*
- * Define "NBBY" (number of bits per byte) if it's not already defined.
- */
-
- #ifndef NBBY
- # define NBBY 8
- #endif
-
- /*
- * The following macro defines the number of fd_masks in an fd_set:
- */
-
- #if !defined(howmany)
- # define howmany(x, y) (((x)+((y)-1))/(y))
- #endif
- #ifdef NFDBITS
- # define MASK_SIZE howmany(FD_SETSIZE, NFDBITS)
- #else
- # define MASK_SIZE howmany(OPEN_MAX, NBBY*sizeof(fd_mask))
- #endif
-
- /*
- * The following macro checks to see whether there is buffered
- * input data available for a stdio FILE. This has to be done
- * in different ways on different systems. TK_FILE_GPTR and
- * TK_FILE_COUNT are #defined by autoconf.
- */
-
- #ifdef TK_FILE_COUNT
- # define TK_READ_DATA_PENDING(f) ((f)->TK_FILE_COUNT > 0)
- #else
- # ifdef TK_FILE_GPTR
- # define TK_READ_DATA_PENDING(f) ((f)->_gptr < (f)->_egptr)
- # else
- # ifdef TK_FILE_READ_PTR
- # define TK_READ_DATA_PENDING(f) ((f)->_IO_read_ptr != (f)->_IO_read_end)
- # else
- /*
- * Don't know what to do for this system; whoever installs
- * Tk will have to write a function TkReadDataPending to do
- * the job.
- */
- EXTERN int TkReadDataPending _ANSI_ARGS_((FILE *f));
- # define TK_READ_DATA_PENDING(f) TkReadDataPending(f)
- # endif
- # endif
- #endif
-
- /*
- * Substitute Tcl's own versions for several system calls. The
- * Tcl versions retry automatically if interrupted by signals.
- */
-
- #define open(a,b,c) TclOpen(a,b,c)
- #define read(a,b,c) TclRead(a,b,c)
- #define waitpid(a,b,c) TclWaitpid(a,b,c)
- #define write(a,b,c) TclWrite(a,b,c)
- EXTERN int TclOpen _ANSI_ARGS_((char *path, int oflag, mode_t mode));
- EXTERN int TclRead _ANSI_ARGS_((int fd, VOID *buf,
- unsigned int numBytes));
- EXTERN int TclWaitpid _ANSI_ARGS_((pid_t pid, int *statPtr, int options));
- EXTERN int TclWrite _ANSI_ARGS_((int fd, VOID *buf,
- unsigned int numBytes));
-
- /*
- * If this system has a BSDgettimeofday function (e.g. IRIX) use it
- * instead of gettimeofday; the gettimeofday function has a different
- * interface than the BSD one that this code expects.
- */
-
- #ifdef HAVE_BSDGETTIMEOFDAY
- # define gettimeofday BSDgettimeofday
- #endif
- #ifdef GETTOD_NOT_DECLARED
- EXTERN int gettimeofday _ANSI_ARGS_((struct timeval *tp,
- struct timezone *tzp));
- #endif
-
- /*
- * Declarations for various library procedures that may not be declared
- * in any other header file.
- */
-
- extern void panic();
-
- #endif /* _TKPORT */
-