/*
 * Copyright (c) 1990, 1991 Sam Leffler
 * Copyright (c) 1991 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this
 * software and its documentation for any purpose is hereby
 * granted without fee, provided that (i) the above copyright
 * notices and this permission notice appear in all copies of the
 * software and related documentation, and (ii) the names of Sam
 * Leffler and Silicon Graphics may not be used in any advertising
 * or publicity relating to the software without the specific,
 * prior written permission of Sam Leffler and Silicon Graphics.
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY
 * KIND, EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT
 * LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
 * PARTICULAR PURPOSE.  IN NO EVENT SHALL SAM LEFFLER OR SILICON
 * GRAPHICS BE LIABLE FOR ANY SPECIAL, INCIDENTAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OF ANY KIND, OR ANY DAMAGES WHATSOEVER
 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER OR NOT
 * ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE. 
 */

#ifndef _COMPAT_
#define _COMPAT_
/*
 * This file contains a hodgepodge of definitions and
 * declarations that are needed to provide compatibility
 * between the native system and the base UNIX implementation
 * that the library assumes (~4BSD).  In particular, you
 * can override the standard i/o interface (read/write/lseek)
 * by redefining the ReadOK/WriteOK/SeekOK macros to your
 * liking.
 *
 * NB: This file is a mess.
 */
#if (defined(__STDC__) || defined(__EXTENDED__)) && !defined(USE_PROTOTYPES)
#define USE_PROTOTYPES  1
#endif

#ifdef THINK_C
#include <unix.h>
#endif
#if USE_PROTOTYPES
#include <stdio.h>
#endif
#include <sys/types.h>
#include <fcntl.h>

/*
 * Workarounds for BSD lseek definitions.
 */
#ifdef SYSV
#include <unistd.h>
#define L_SET   SEEK_SET
#define L_INCR  SEEK_CUR
#define L_XTND  SEEK_END
#endif
#ifndef L_SET
#define L_SET   0
#define L_INCR  1
#define L_XTND  2
#endif

/*
 * SVID workarounds for BSD bit
 * string manipulation routines.
 */
#if defined(SYSV) || defined(THINK_C) || defined(applec)
#define bzero(dst,len)      memset(dst, 0, len)
#define bcopy(src,dst,len)  memcpy(dst, src, len)
#define bcmp(src, dst, len) memcmp(dst, src, len)
#define index strchr
#define rindex strrchr
#endif

/*
 * The BSD typedefs are used throughout the library.
 * If your system doesn't have them in <sys/types.h>,
 * then define BSDTYPES in your Makefile.
 */
#ifdef BSDTYPES
typedef unsigned char u_char;
typedef unsigned short u_short;
typedef unsigned int u_int;
typedef unsigned long u_long;
#endif

/*
 * Mac workaround to handle the file
 * extension semantics of lseek.
 */
#ifdef applec
#define lseek   mpw_lseek
extern long mpw_lseek(int, long, int);
#else
extern  long lseek();
#endif

/*
 * Default Read/Seek/Write definitions.
 */
#ifndef ReadOK
#define ReadOK(fd, buf, size)   (read(fd, (char *)buf, size) == size)
#endif
#ifndef SeekOK
#define SeekOK(fd, off) (lseek(fd, (long)off, L_SET) == (long)off)
#endif
#ifndef WriteOK
#define WriteOK(fd, buf, size)  (write(fd, (char *)buf, size) == size)
#endif

#if defined(__MACH__)
extern  void *malloc(size_t size), *realloc(void *ptr, size_t size);
#else /* !__MACH__ */
#if defined(MSDOS)
#include <malloc.h>
#else /* !MSDOS */
#if defined(_IBMR2) || defined(applec) || defined(__GNUC__) || defined(THINK_C)
#include <stdlib.h>
#else /* !_IBMR2 */
extern  char *malloc(), *calloc(), *realloc();
#endif /* _IBMR2 */
#endif /* !MSDOS */
#endif /* !__MACH__ */

/*
 * dblparam_t is the type that a double precision
 * floating point value will have on the parameter
 * stack (when coerced by the compiler).
 */
#ifdef applec
typedef extended dblparam_t;
#else
typedef double dblparam_t;
#endif

/*
 * Varargs parameter list handling...YECH!!!!
 */
#if defined(__STDC__) && !defined(USE_VARARGS)
#define USE_VARARGS 0
#endif

#if defined(USE_VARARGS)
#if USE_VARARGS
#include <varargs.h>
#define VA_START(ap, parmN) va_start(ap)
#else
#include <stdarg.h>
#define VA_START(ap, parmN) va_start(ap, parmN)
#endif
#endif /* defined(USE_VARARGS) */
#endif /* _COMPAT_ */