/*
 ** Copyright (c) 1990,1991,1992 Keld Simonsen
 ** All rights reserved.
 **
 ** Written by Keld Simonsen, RAP, Sct. Joergens Alle 8,
 **            DK-1615 Copenhagen V, Denmark
 **
 ** Redistribution and use of this routine in source and binary forms are
 ** permitted provided that:
 **
 ** (1) source distributions retain this entire copyright notice. 
 ** (2) The character and character set codes and names may not be changed.
 ** (3) The programming code must remain backwards compatible.
 **
 ** The restriction on altering of names is done so that all versons
 ** of the code have a chance of being compatible. If you want alterations
 ** or additions, please mail me (preferably email to  keld@dkuug.dk)
 ** and I will consider it for future releases.
 ** 
 ** If the material is included in commercial products, donations
 ** will be most appreciated.
 ** 
 ** Keld Simonsen
 **
 */

#include "config.h"
/* -- The following 3 parameters may need modifying. --  */
typedef unsigned char	CHAR8U;	/* must be able to hold values 0-255 */
typedef short int	INT16S;	/* Must be able to hold 16 bits signed int */
typedef unsigned short int	CHAR16U;	/* Must be able to hold 16 bits unsigned int */
typedef long int	INT32S;	/* Must be able to hold 32 bits signed int */
#define DEFAULT_ESCAPE	8200	/* */

#define IN_CH		INT16S
#define OUT_CH		CHAR8U

#define C256L		256L
#define C256		256	/* max val of any char encoded as one byte */
#define LSIZE		256	/* max byte chars on a line, in a file name */

typedef struct chartab	CHARTAB;
struct chartab
{
  CHARTAB		*next;
  INT32S		fileoffset;
  INT16S		ecma;
  INT32S		c0esc;  /* without leading ESC */
  INT32S		c1esc;
  INT32S		g0esc;
  INT32S		g1esc;
  INT32S		g2esc;
  INT32S		g3esc;
  INT16S		bits;
  INT16S		combtabs;
  INT16S		outbytes;
  INT16S		createout; /* create out from in */
  char		*name;
  IN_CH		*in;	/* characters in 2 byte mnemonic format */
  OUT_CH		*out;	/* characters in 8 bit format */
  CHAR16U		*out16;	/* characters in 16 bit format */
};
typedef struct charset	CHARSET;
struct charset
{
  CHARSET		*next;
  CHARTAB		*cs;
  INT32S		esc;
  CHAR8U		esc1;
  CHAR8U		esc2;
};

struct chdbhdr
{
  char label [12];
  INT32S  version;
  INT32S  basechrs;	/* number of basic characters */
  INT32S  outsize;	/* size of OUT table */
  INT32S  begcombtabs;
  INT32S  offlong;	/* beginning of LONGNAMES table */
  INT32S  sizlong;	/* size of LONGNAMES table */
  INT32S  offchs;		/* beginning of CHARTAB tables */
  INT32S  sizchs;		/* size of CHARTAB tables */
  INT32S  offdat;		/* beginning of DIRECTORY index */
  INT32S  sizdat;		/* size of DIRECTORY index */
  INT32S  offdir;		/* beginning of DIRECTORY table */
  INT32S  sizdir;		/* size of DIRECTORY table */
  INT32S  offend;		/* end of tables */
};

extern CHARSET *getchset();
#ifdef XERR
#define syserr printf
#define bzero(s, i)    memset(s, 0, i)
#endif