/* ------------------------------------------------------------------------ */
unsigned short
decode_c_st0(/*void*/)
{
int i, j;
static unsigned short blocksize = 0;
if (blocksize == 0) { /* read block head */
blocksize = getbits(BUFBITS); /* read block blocksize */
read_tree_c();
if (getbits(1)) {
read_tree_p();
}
else {
ready_made(1);
}
lha_make_table(NP, pt_len, 8, pt_table);
}
blocksize--;
j = c_table[lhabitbuf >> 4];
if (j < N1)
fillbuf(c_len[j]);
else {
fillbuf(12);
i = lhabitbuf;
do {
if ((short) i < 0)
j = lha_right[j];
else
j = lha_left[j];
i <<= 1;
} while (j >= N1);
fillbuf(c_len[j] - 12);
}
if (j == N1 - 1)
j += getbits(EXTRABITS);
return j;
}
USHORT Unpack_HEAVY(UCHAR *in, UCHAR *out, UCHAR flags, USHORT origsize){
USHORT j, i, c, bitmask;
UCHAR *outend;
/* Heavy 1 uses a 4Kb dictionary, Heavy 2 uses 8Kb */
if (flags & 8) {
np = 15;
bitmask = 0x1fff;
} else {
np = 14;
bitmask = 0x0fff;
}
initbitbuf(in);
if (flags & 2) {
if (read_tree_c()) return 1;
if (read_tree_p()) return 2;
}
outend = out+origsize;
while (out<outend) {
c = decode_c();
if (c < 256) {
*out++ = text[heavy_text_loc++ & bitmask] = (UCHAR)c;
} else {
j = (USHORT) (c - OFFSET);
i = (USHORT) (heavy_text_loc - decode_p() - 1);
while(j--) *out++ = text[heavy_text_loc++ & bitmask] = text[i++ & bitmask];
}
}
return 0;
}
