/*
 * $Header: /usr/people/tcl/src/uutar/RCS/codes.h,v 1.1.1.2 1993/09/11 18:41:46 tcl Exp $
 * Tom Lawrence
 * tcl@sgi.com
 */

/* number of printable characters in output character set */
extern int numchars;

/* encoding/decoding table. inuse indicates whether or not the character
 * whose ascii code is the offset into this array is part of the output 
 * printable character set.
 *
 * When encoding, the next 8 bits (not necessarily byte aligned) in the
 * input binary bitstream are used to index into this array. The code
 * field then indicates the printable output character to append to the
 * output, and the len field indicates how many of the input 8 bits
 * should be comsumed by this operation, i.e. the input bitstream is
 * advanced by len bits.
 *
 * When decoding, the input printable ascii character is used to index
 * into this array. The variable length (8 bits or less) bitfield stored
 * in code and whose length is len, is appended to the output binary
 * bitstream.
 */
extern struct code {
    char inuse;
    char code;
    char len;
} codes[256];

void init_codes();
void parse_charval_list();
void print_charval_list();

#define ENCODE 0
#define DECODE 1