/*
 *     xDMS  v1.0  -  Portable DMS archive unpacker  -  Public Domain
 *     Written by     Andre R. de la Rocha  <adlroc@usa.net>
 *
 *
 */


#include <string.h>

#include "cdata.h"
#include "u_quick.h"
#include "getbits.h"


#define QBITMASK 0xff


static USHORT quick_text_loc;



void Init_QUICK(void){
	quick_text_loc = 251;
	memset(text,0,252);
}



USHORT Unpack_QUICK(UCHAR *in, UCHAR *out, UCHAR flags, USHORT origsize){
	USHORT i, j;
	UCHAR *outend;

	initbitbuf(in);

	outend = out+origsize;
	while (out < outend) {
		if (GETBITS(1)!=0) {
			DROPBITS(1);
			*out++ = text[quick_text_loc++ & QBITMASK] = (UCHAR)GETBITS(8);  DROPBITS(8);
		} else {
			DROPBITS(1);
			j = (USHORT) (GETBITS(2)+2);  DROPBITS(2);
			i = (USHORT) (quick_text_loc - GETBITS(8) - 1);  DROPBITS(8);
			while(j--) {
				*out++ = text[quick_text_loc++ & QBITMASK] = text[i++ & QBITMASK];
			}
		}
	}
	quick_text_loc = (USHORT)((quick_text_loc+5) & QBITMASK);
	if (!(flags & 1)) Init_QUICK();

	return 0;
}