#ifndef DES_COMMON_H
#define DES_COMMON_H

#include <stdio.h>
#include "crypt.h"

/*
 * Types which have the same width as Turbo C 2.x int/long when this source
 * is inspected or built on a modern compiler.
 */
#ifdef __TURBOC__
typedef int            DES_INT16;
typedef unsigned int   DES_UINT16;
typedef long           DES_INT32;
#else
#include <stdint.h>
typedef int16_t        DES_INT16;
typedef uint16_t       DES_UINT16;
typedef int32_t        DES_INT32;
#endif

#define DES_BUFFER_SIZE   0x4000
#define DES_PREFIX_SIZE   8
#define DES_PAYLOAD_SIZE  ( DES_BUFFER_SIZE - DES_PREFIX_SIZE )
#define DES_FILE_VERSION  ((DES_INT32) 0x2775L)

extern DES_INT32 desKnownVersions[];
extern const char *desProgramVersion;
extern const char *desCopyrightText;

void checkRead( int result );
void checkWrite( FILE *stream );
void checkOpen( FILE *stream, const char *name );
void checkVersion( DES_INT32 version );
DES_INT32 negativeMarker( const unsigned char *p );

#endif