/* -*- Mode: C; tab-width: 4 -*-
* The head file for Bin Hex 4.0 encode/decode
* -------------------------------------------
*
* 10sep95 mym created
*/
#ifndef binhex_h
#define binhex_h
#define BINHEX_STATE_START 0
#define BINHEX_STATE_FNAME 1
#define BINHEX_STATE_HEADER 2
#define BINHEX_STATE_HCRC 3
#define BINHEX_STATE_DFORK 4
#define BINHEX_STATE_DCRC 5
#define BINHEX_STATE_RFORK 6
#define BINHEX_STATE_RCRC 7
#define BINHEX_STATE_FINISH 8
#define BINHEX_STATE_DONE 9
/* #define BINHEX_STATE_ERROR 10 */
/*
** The Definations for the binhex encoder
*/
typedef struct _binhex_header
{
uint32 type, creator;
uint16 flags;
int32 dlen, rlen ;
} binhex_header;
typedef struct _binhex_encode_object
{
int state; /* progress state. */
int state86; /* binhex encode state. */
unsigned long CRC; /* accumulated CRC */
int line_length; /* the line length count */
char saved_bits;
int s_inbuff; /* the inbuff size */
int pos_inbuff; /* the inbuff position */
char* inbuff; /* the inbuff pool */
int s_outbuff; /* the outbuff size */
int pos_outbuff; /* the outbuff position */
char* outbuff; /* the outbuf pool */
int s_overflow; /* the real size of overflow */
char overflow[32]; /* a small overflow buffer */
char c[2];
char newline[4]; /* the new line char seq. */
/* -- for last fix up. -- */
char name[64];
binhex_header head;
} binhex_encode_object;
/*
** The defination for the binhex decoder.
** NOTE: This define is for Mac only.
*/
typedef union
{
unsigned char c[4];
uint32 val;
} longbuf;
#define MAX_BUFF_SIZE 256
typedef struct _binhex_decode_object
{
int state; /* current state */
uint16 CRC; /* cumulative CRC */
uint16 fileCRC; /* CRC value from file */
longbuf octetbuf; /* buffer for decoded 6-bit values */
int16 octetin; /* current input position in octetbuf */
int16 donepos; /* ending position in octetbuf */
int16 inCRC; /* flag set when reading a CRC */
int32 count; /* generic counter */
int16 marker; /* flag indicating maker */
unsigned char rlebuf; /* buffer for last run length encoding value */
binhex_header head; /* buffer for header */
#ifdef XP_MAC
char name[64]; /* fsspec for the output file */
int16 vRefNum;
int32 parID ;
int16 fileId; /* the refnum of the output file */
#else
char *name; /* file name for the output file in non-mac OS */
XP_File fileId; /* the file if for the outpur file. non-mac OS */
#endif
MWContext* context; /* context for call back function. */
int32 s_inbuff; /* the valid size of the inbuff */
int32 pos_inbuff; /* the index of the inbuff. */
char* inbuff; /* the inbuff pointer. */
int32 pos_outbuff; /* the position of the out buff. */
char outbuff[MAX_BUFF_SIZE];
} binhex_decode_object;
XP_BEGIN_PROTOS
/*
** The binhex file encode prototypes.
*/
int binhex_encode_init(binhex_encode_object *p_bh_encode_obj);
int binhex_encode_next(binhex_encode_object *p_bh_encode_obj,
char *in_buff,
int32 in_size,
char *out_buff,
int32 buff_size,
int32 *real_size);
int binhex_encode_end (binhex_encode_object *p_bh_encode_obj,
XP_Bool is_aborting);
int binhex_reencode_head(
binhex_encode_object *p_bh_encode_obj,
char* outbuff,
int32 buff_size,
int32* real_size);
/*
** The binhex stream decode prototypes.
*/
int binhex_decode_init(binhex_decode_object *p_bh_decode_env,
MWContext *context);
int binhex_decode_next(binhex_decode_object *p_bh_decode_env,
const char *in_buff,
int32 buff_size);
int binhex_decode_end (binhex_decode_object *p_bh_decode_env,
XP_Bool is_aborting);
XP_END_PROTOS
#endif