internal void scan_tree(short[] tree, int max_code)
{
int num = -1;
int num2 = (int)tree[1];
int num3 = 0;
int num4 = 7;
int num5 = 4;
if (num2 == 0)
{
num4 = 138;
num5 = 3;
}
tree[(max_code + 1) * 2 + 1] = (short)SupportClass.Identity(65535L);
for (int i = 0; i <= max_code; i++)
{
int num6 = num2;
num2 = (int)tree[(i + 1) * 2 + 1];
if (++num3 >= num4 || num6 != num2)
{
if (num3 < num5)
{
this.bl_tree[num6 * 2] = (short)((int)this.bl_tree[num6 * 2] + num3);
}
else if (num6 != 0)
{
short[] array;
if (num6 != num)
{
IntPtr intPtr;
(array = this.bl_tree)[(int)(intPtr = (IntPtr)(num6 * 2))] = (short)(array[(int)intPtr] + 1);
}
(array = this.bl_tree)[32] = (short)(array[32] + 1);
}
else if (num3 <= 10)
{
short[] array;
(array = this.bl_tree)[34] = (short)(array[34] + 1);
}
else
{
short[] array;
(array = this.bl_tree)[36] = (short)(array[36] + 1);
}
num3 = 0;
num = num6;
if (num2 == 0)
{
num4 = 138;
num5 = 3;
}
else if (num6 == num2)
{
num4 = 6;
num5 = 3;
}
else
{
num4 = 7;
num5 = 4;
}
}
}
}
internal void put_short(int w)
{
this.put_byte((byte)w);
this.put_byte((byte)SupportClass.URShift(w, 8));
}
internal int proc(ZStream z, int r)
{
int t; // temporary storage
int b; // bit buffer
int k; // bits in bit buffer
int p; // input data pointer
int n; // bytes available there
int q; // output window write pointer
int m; // bytes to end of window or read pointer
// copy input/output information to locals (UPDATE macro restores)
{
p = z.next_in_index; n = z.avail_in; b = bitb; k = bitk;
}
{
q = write; m = (int)(q < read?read - q - 1:end - q);
}
// process input based on current state
while (true)
{
switch (mode)
{
case TYPE:
while (k < (3))
{
if (n != 0)
{
r = Z_OK;
}
else
{
bitb = b; bitk = k;
z.avail_in = n;
z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
;
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
t = (int)(b & 7);
last = t & 1;
switch (SupportClass.URShift(t, 1))
{
case 0: // stored
{
b = SupportClass.URShift(b, (3)); k -= (3);
}
t = k & 7; // go to byte boundary
{
b = SupportClass.URShift(b, (t)); k -= (t);
}
mode = LENS; // get length of stored block
break;
case 1: // fixed
{
int[] bl = new int[1];
int[] bd = new int[1];
int[][] tl = new int[1][];
int[][] td = new int[1][];
InfTree.inflate_trees_fixed(bl, bd, tl, td, z);
codes = new InfCodes(bl[0], bd[0], tl[0], td[0], z);
}
{
b = SupportClass.URShift(b, (3)); k -= (3);
}
mode = CODES;
break;
case 2: // dynamic
{
b = SupportClass.URShift(b, (3)); k -= (3);
}
mode = TABLE;
break;
case 3: // illegal
{
b = SupportClass.URShift(b, (3)); k -= (3);
}
mode = BAD;
z.msg = "invalid block type";
r = Z_DATA_ERROR;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
break;
case LENS:
while (k < (32))
{
if (n != 0)
{
r = Z_OK;
}
else
{
bitb = b; bitk = k;
z.avail_in = n;
z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
;
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
if (((SupportClass.URShift((~b), 16)) & 0xffff) != (b & 0xffff))
{
mode = BAD;
z.msg = "invalid stored block lengths";
r = Z_DATA_ERROR;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
left = (b & 0xffff);
b = k = 0; // dump bits
mode = left != 0?STORED:(last != 0?DRY:TYPE);
break;
case STORED:
if (n == 0)
{
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
if (m == 0)
{
if (q == end && read != 0)
{
q = 0; m = (int)(q < read?read - q - 1:end - q);
}
if (m == 0)
{
write = q;
r = inflate_flush(z, r);
q = write; m = (int)(q < read?read - q - 1:end - q);
if (q == end && read != 0)
{
q = 0; m = (int)(q < read?read - q - 1:end - q);
}
if (m == 0)
{
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
}
}
r = Z_OK;
t = left;
if (t > n)
{
t = n;
}
if (t > m)
{
t = m;
}
Array.Copy(z.next_in, p, window, q, t);
p += t; n -= t;
q += t; m -= t;
if ((left -= t) != 0)
{
break;
}
mode = last != 0?DRY:TYPE;
break;
case TABLE:
while (k < (14))
{
if (n != 0)
{
r = Z_OK;
}
else
{
bitb = b; bitk = k;
z.avail_in = n;
z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
;
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
table = t = (b & 0x3fff);
if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
{
mode = BAD;
z.msg = "too many length or distance symbols";
r = Z_DATA_ERROR;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
blens = new int[t];
{
b = SupportClass.URShift(b, (14)); k -= (14);
}
index = 0;
mode = BTREE;
goto case BTREE;
case BTREE:
while (index < 4 + (SupportClass.URShift(table, 10)))
{
while (k < (3))
{
if (n != 0)
{
r = Z_OK;
}
else
{
bitb = b; bitk = k;
z.avail_in = n;
z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
;
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
blens[border[index++]] = b & 7;
{
b = SupportClass.URShift(b, (3)); k -= (3);
}
}
while (index < 19)
{
blens[border[index++]] = 0;
}
bb[0] = 7;
t = InfTree.inflate_trees_bits(blens, bb, tb, hufts, z);
if (t != Z_OK)
{
r = t;
if (r == Z_DATA_ERROR)
{
blens = null;
mode = BAD;
}
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
index = 0;
mode = DTREE;
goto case DTREE;
case DTREE:
while (true)
{
t = table;
if (!(index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f)))
{
break;
}
int i, j, c;
t = bb[0];
while (k < (t))
{
if (n != 0)
{
r = Z_OK;
}
else
{
bitb = b; bitk = k;
z.avail_in = n;
z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
;
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
if (tb[0] == -1)
{
//System.err.println("null...");
}
t = hufts[(tb[0] + (b & inflate_mask[t])) * 3 + 1];
c = hufts[(tb[0] + (b & inflate_mask[t])) * 3 + 2];
if (c < 16)
{
b = SupportClass.URShift(b, (t)); k -= (t);
blens[index++] = c;
}
else
{
// c == 16..18
i = c == 18?7:c - 14;
j = c == 18?11:3;
while (k < (t + i))
{
if (n != 0)
{
r = Z_OK;
}
else
{
bitb = b; bitk = k;
z.avail_in = n;
z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
;
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
b = SupportClass.URShift(b, (t)); k -= (t);
j += (b & inflate_mask[i]);
b = SupportClass.URShift(b, (i)); k -= (i);
i = index;
t = table;
if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) || (c == 16 && i < 1))
{
blens = null;
mode = BAD;
z.msg = "invalid bit length repeat";
r = Z_DATA_ERROR;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
c = c == 16?blens[i - 1]:0;
do
{
blens[i++] = c;
}while (--j != 0);
index = i;
}
}
tb[0] = -1;
{
int[] bl = new int[1];
int[] bd = new int[1];
int[] tl = new int[1];
int[] td = new int[1];
bl[0] = 9; // must be <= 9 for lookahead assumptions
bd[0] = 6; // must be <= 9 for lookahead assumptions
t = table;
t = InfTree.inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f), blens, bl, bd, tl, td, hufts, z);
if (t != Z_OK)
{
if (t == Z_DATA_ERROR)
{
blens = null;
mode = BAD;
}
r = t;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
codes = new InfCodes(bl[0], bd[0], hufts, tl[0], hufts, td[0], z);
}
blens = null;
mode = CODES;
goto case CODES;
case CODES:
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
if ((r = codes.proc(this, z, r)) != Z_STREAM_END)
{
return(inflate_flush(z, r));
}
r = Z_OK;
codes.free(z);
p = z.next_in_index; n = z.avail_in; b = bitb; k = bitk;
q = write; m = (int)(q < read?read - q - 1:end - q);
if (last == 0)
{
mode = TYPE;
break;
}
mode = DRY;
goto case DRY;
case DRY:
write = q;
r = inflate_flush(z, r);
q = write; m = (int)(q < read?read - q - 1:end - q);
if (read != write)
{
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
mode = DONE;
goto case DONE;
case DONE:
r = Z_STREAM_END;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
case BAD:
r = Z_DATA_ERROR;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
default:
r = Z_STREAM_ERROR;
bitb = b; bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
write = q;
return(inflate_flush(z, r));
}
}
}
internal int deflate(ZStream strm, int flush)
{
if (flush <= 4 && flush >= 0)
{
if (strm.next_out != null && (strm.next_in != null || strm.avail_in == 0))
{
if (this.status != 666 || flush == 4)
{
if (strm.avail_out == 0)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
this.strm = strm;
int num = this.last_flush;
this.last_flush = flush;
if (this.status == 42)
{
int num2 = 8 + (this.w_bits - 8 << 4) << 8;
int num3 = (this.level - 1 & 255) >> 1;
if (num3 > 3)
{
num3 = 3;
}
num2 |= num3 << 6;
if (this.strstart != 0)
{
num2 |= 32;
}
num2 += 31 - num2 % 31;
this.status = 113;
this.putShortMSB(num2);
if (this.strstart != 0)
{
this.putShortMSB((int)SupportClass.URShift(strm.adler, 16));
this.putShortMSB((int)(strm.adler & 65535L));
}
strm.adler = strm._adler.adler32(0L, null, 0, 0);
}
if (this.pending != 0)
{
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
else if (strm.avail_in == 0 && flush <= num && flush != 4)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
if (this.status == 666 && strm.avail_in != 0)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
if (strm.avail_in != 0 || this.lookahead != 0 || (flush != 0 && this.status != 666))
{
int num4 = -1;
switch (Deflate.config_table[this.level].func)
{
case 0:
num4 = this.deflate_stored(flush);
break;
case 1:
num4 = this.deflate_fast(flush);
break;
case 2:
num4 = this.deflate_slow(flush);
break;
}
if (num4 == 2 || num4 == 3)
{
this.status = 666;
}
if (num4 != 0)
{
if (num4 != 2)
{
if (num4 != 1)
{
goto IL_263;
}
if (flush == 1)
{
this._tr_align();
}
else
{
this._tr_stored_block(0, 0, false);
if (flush == 3)
{
for (int i = 0; i < this.hash_size; i++)
{
this.head[i] = 0;
}
}
}
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
goto IL_263;
}
}
if (strm.avail_out == 0)
{
this.last_flush = -1;
}
return(0);
}
IL_263:
if (flush != 4)
{
return(0);
}
if (this.noheader != 0)
{
return(1);
}
this.putShortMSB((int)SupportClass.URShift(strm.adler, 16));
this.putShortMSB((int)(strm.adler & 65535L));
strm.flush_pending();
this.noheader = -1;
if (this.pending == 0)
{
return(1);
}
return(0);
}
}
strm.msg = Deflate.z_errmsg[4];
return(-2);
}
return(-2);
}
internal int deflate(ZStream strm, int flush)
{
if ((flush > 4) || (flush < 0))
{
return(-2);
}
if (((strm.next_out == null) || ((strm.next_in == null) && (strm.avail_in != 0))) || ((this.status == 0x29a) && (flush != 4)))
{
strm.msg = Deflate.z_errmsg[4];
return(-2);
}
if (strm.avail_out == 0)
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
this.strm = strm;
int num1 = this.last_flush;
this.last_flush = flush;
if (this.status == 0x2a)
{
int num2 = (8 + ((this.w_bits - 8) << 4)) << 8;
int num3 = ((this.level - 1) & 0xff) >> 1;
if (num3 > 3)
{
num3 = 3;
}
num2 |= num3 << 6;
if (this.strstart != 0)
{
num2 |= 0x20;
}
num2 += 0x1f - (num2 % 0x1f);
this.status = 0x71;
this.putShortMSB(num2);
if (this.strstart != 0)
{
this.putShortMSB((int)SupportClass.URShift(strm.adler, 0x10));
this.putShortMSB(((int)strm.adler) & 0xffff);
}
strm.adler = strm._adler.adler32((long)0, null, 0, 0);
}
if (this.pending != 0)
{
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
else if (((strm.avail_in == 0) && (flush <= num1)) && (flush != 4))
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
if ((this.status == 0x29a) && (strm.avail_in != 0))
{
strm.msg = Deflate.z_errmsg[7];
return(-5);
}
if (((strm.avail_in != 0) || (this.lookahead != 0)) || ((flush != 0) && (this.status != 0x29a)))
{
int num4 = -1;
switch (Deflate.config_table[this.level].func)
{
case 0:
num4 = this.deflate_stored(flush);
break;
case 1:
num4 = this.deflate_fast(flush);
break;
case 2:
num4 = this.deflate_slow(flush);
break;
}
switch (num4)
{
case 2:
case 3:
this.status = 0x29a;
break;
}
switch (num4)
{
case 0:
case 2:
if (strm.avail_out == 0)
{
this.last_flush = -1;
}
return(0);
default:
if (num4 == 1)
{
if (flush == 1)
{
this._tr_align();
}
else
{
this._tr_stored_block(0, 0, false);
if (flush == 3)
{
for (int num5 = 0; num5 < this.hash_size; num5++)
{
this.head[num5] = 0;
}
}
}
strm.flush_pending();
if (strm.avail_out == 0)
{
this.last_flush = -1;
return(0);
}
}
break;
}
}
if (flush == 4)
{
if (this.noheader != 0)
{
return(1);
}
this.putShortMSB((int)SupportClass.URShift(strm.adler, 0x10));
this.putShortMSB(((int)strm.adler) & 0xffff);
strm.flush_pending();
this.noheader = -1;
if (this.pending == 0)
{
return(1);
}
}
return(0);
}
internal int proc(InfBlocks s, ZStream z, int r)
{
int num = z.next_in_index;
int num2 = z.avail_in;
int num3 = s.bitb;
int i = s.bitk;
int num4 = s.write;
int num5 = (num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4);
while (true)
{
int num6;
switch (this.mode)
{
case 0:
if (num5 >= 258 && num2 >= 10)
{
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
r = this.inflate_fast((int)this.lbits, (int)this.dbits, this.ltree, this.ltree_index, this.dtree, this.dtree_index, s, z);
num = z.next_in_index;
num2 = z.avail_in;
num3 = s.bitb;
i = s.bitk;
num4 = s.write;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
if (r != 0)
{
this.mode = ((r == 1) ? 7 : 9);
continue;
}
}
this.need = (int)this.lbits;
this.tree = this.ltree;
this.tree_index = this.ltree_index;
this.mode = 1;
goto IL_199;
case 1:
goto IL_199;
case 2:
num6 = this.get_Renamed;
while (i < num6)
{
if (num2 == 0)
{
goto IL_34F;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
this.len += (num3 & InfCodes.inflate_mask[num6]);
num3 >>= num6;
i -= num6;
this.need = (int)this.dbits;
this.tree = this.dtree;
this.tree_index = this.dtree_index;
this.mode = 3;
goto IL_412;
case 3:
goto IL_412;
case 4:
num6 = this.get_Renamed;
while (i < num6)
{
if (num2 == 0)
{
goto IL_596;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
this.dist += (num3 & InfCodes.inflate_mask[num6]);
num3 >>= num6;
i -= num6;
this.mode = 5;
goto IL_635;
case 5:
goto IL_635;
case 6:
if (num5 == 0)
{
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
s.write = num4;
r = s.inflate_flush(z, r);
num4 = s.write;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
goto Block_44;
}
}
}
r = 0;
s.window[num4++] = (byte)this.lit;
num5--;
this.mode = 0;
continue;
case 7:
goto IL_8DB;
case 8:
goto IL_98A;
case 9:
goto IL_9D4;
}
break;
IL_199:
num6 = this.need;
while (i < num6)
{
if (num2 == 0)
{
goto IL_1AB;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
int num7 = (this.tree_index + (num3 & InfCodes.inflate_mask[num6])) * 3;
num3 = SupportClass.URShift(num3, this.tree[num7 + 1]);
i -= this.tree[num7 + 1];
int num8 = this.tree[num7];
if (num8 == 0)
{
this.lit = this.tree[num7 + 2];
this.mode = 6;
continue;
}
if ((num8 & 16) != 0)
{
this.get_Renamed = (num8 & 15);
this.len = this.tree[num7 + 2];
this.mode = 2;
continue;
}
if ((num8 & 64) == 0)
{
this.need = num8;
this.tree_index = num7 / 3 + this.tree[num7 + 2];
continue;
}
if ((num8 & 32) != 0)
{
this.mode = 7;
continue;
}
goto IL_2DF;
IL_412:
num6 = this.need;
while (i < num6)
{
if (num2 == 0)
{
goto IL_424;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num7 = (this.tree_index + (num3 & InfCodes.inflate_mask[num6])) * 3;
num3 >>= this.tree[num7 + 1];
i -= this.tree[num7 + 1];
num8 = this.tree[num7];
if ((num8 & 16) != 0)
{
this.get_Renamed = (num8 & 15);
this.dist = this.tree[num7 + 2];
this.mode = 4;
continue;
}
if ((num8 & 64) == 0)
{
this.need = num8;
this.tree_index = num7 / 3 + this.tree[num7 + 2];
continue;
}
goto IL_526;
IL_635:
int j;
for (j = num4 - this.dist; j < 0; j += s.end)
{
}
while (this.len != 0)
{
if (num5 == 0)
{
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
s.write = num4;
r = s.inflate_flush(z, r);
num4 = s.write;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
if (num4 == s.end && s.read != 0)
{
num4 = 0;
num5 = ((num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4));
}
if (num5 == 0)
{
goto Block_32;
}
}
}
s.window[num4++] = s.window[j++];
num5--;
if (j == s.end)
{
j = 0;
}
this.len--;
}
this.mode = 0;
}
r = -2;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_1AB:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_2DF:
this.mode = 9;
z.msg = "invalid literal/length code";
r = -3;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_34F:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_424:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_526:
this.mode = 9;
z.msg = "invalid distance code";
r = -3;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_596:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
Block_32:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
Block_44:
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_8DB:
if (i > 7)
{
i -= 8;
num2++;
num--;
}
s.write = num4;
r = s.inflate_flush(z, r);
num4 = s.write;
int arg_92C_0 = (num4 < s.read) ? (s.read - num4 - 1) : (s.end - num4);
if (s.read != s.write)
{
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
}
this.mode = 8;
IL_98A:
r = 1;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
IL_9D4:
r = -3;
s.bitb = num3;
s.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
s.write = num4;
return(s.inflate_flush(z, r));
}
internal const int BMAX = 15; // maximum bit length of any code
internal static int huft_build(int[] b, int bindex, int n, int s, int[] d, int[] e, int[] t, int[] m, int[] hp, int[] hn, int[] v)
{
// Given a list of code lengths and a maximum table size, make a set of
// tables to decode that set of codes. Return Z_OK on success, Z_BUF_ERROR
// if the given code set is incomplete (the tables are still built in this
// case), Z_DATA_ERROR if the input is invalid (an over-subscribed set of
// lengths), or Z_MEM_ERROR if not enough memory.
int a; // counter for codes of length k
var c = new int[BMAX + 1]; // bit length count table
int f; // i repeats in table every f entries
int g; // maximum code length
int h; // table level
int i; // counter, current code
int j; // counter
int k; // number of bits in current code
int l; // bits per table (returned in m)
int mask; // (1 << w) - 1, to avoid cc -O bug on HP
int p; // pointer into c[], b[], or v[]
int q; // points to current table
var r = new int[3]; // table entry for structure assignment
var u = new int[BMAX]; // table stack
int w; // bits before this table == (l * h)
var x = new int[BMAX + 1]; // bit offsets, then code stack
int xp; // pointer into x
int y; // number of dummy codes added
int z; // number of entries in current table
// Generate counts for each bit length
p = 0; i = n;
do
{
c[b[bindex + p]]++; p++; i--; // assume all entries <= BMAX
}while (i != 0);
if (c[0] == n)
{
// null input--all zero length codes
t[0] = -1;
m[0] = 0;
return(Z_OK);
}
// Find minimum and maximum length, bound *m by those
l = m[0];
for (j = 1; j <= BMAX; j++)
{
if (c[j] != 0)
{
break;
}
}
k = j; // minimum code length
if (l < j)
{
l = j;
}
for (i = BMAX; i != 0; i--)
{
if (c[i] != 0)
{
break;
}
}
g = i; // maximum code length
if (l > i)
{
l = i;
}
m[0] = l;
// Adjust last length count to fill out codes, if needed
for (y = 1 << j; j < i; j++, y <<= 1)
{
if ((y -= c[j]) < 0)
{
return(Z_DATA_ERROR);
}
}
if ((y -= c[i]) < 0)
{
return(Z_DATA_ERROR);
}
c[i] += y;
// Generate starting offsets into the value table for each length
x[1] = j = 0;
p = 1; xp = 2;
while (--i != 0)
{
// note that i == g from above
x[xp] = (j += c[p]);
xp++;
p++;
}
// Make a table of values in order of bit lengths
i = 0; p = 0;
do
{
if ((j = b[bindex + p]) != 0)
{
v[x[j]++] = i;
}
p++;
}while (++i < n);
n = x[g]; // set n to length of v
// Generate the Huffman codes and for each, make the table entries
x[0] = i = 0; // first Huffman code is zero
p = 0; // grab values in bit order
h = -1; // no tables yet--level -1
w = -l; // bits decoded == (l * h)
u[0] = 0; // just to keep compilers happy
q = 0; // ditto
z = 0; // ditto
// go through the bit lengths (k already is bits in shortest code)
for (; k <= g; k++)
{
a = c[k];
while (a-- != 0)
{
// here i is the Huffman code of length k bits for value *p
// make tables up to required level
while (k > w + l)
{
h++;
w += l; // previous table always l bits
// compute minimum size table less than or equal to l bits
z = g - w;
z = (z > l)?l:z; // table size upper limit
if ((f = 1 << (j = k - w)) > a + 1)
{
// try a k-w bit table
// too few codes for k-w bit table
f -= (a + 1); // deduct codes from patterns left
xp = k;
if (j < z)
{
while (++j < z)
{
// try smaller tables up to z bits
if ((f <<= 1) <= c[++xp])
{
break; // enough codes to use up j bits
}
f -= c[xp]; // else deduct codes from patterns
}
}
}
z = 1 << j; // table entries for j-bit table
// allocate new table
if (hn[0] + z > MANY)
{
// (note: doesn't matter for fixed)
return(Z_DATA_ERROR); // overflow of MANY
}
u[h] = q = hn[0]; // DEBUG
hn[0] += z;
// connect to last table, if there is one
if (h != 0)
{
x[h] = i; // save pattern for backing up
r[0] = (byte)j; // bits in this table
r[1] = (byte)l; // bits to dump before this table
j = SupportClass.URShift(i, (w - l));
r[2] = (int)(q - u[h - 1] - j); // offset to this table
Array.Copy(r, 0, hp, (u[h - 1] + j) * 3, 3); // connect to last table
}
else
{
t[0] = q; // first table is returned result
}
}
// set up table entry in r
r[1] = (byte)(k - w);
if (p >= n)
{
r[0] = 128 + 64; // out of values--invalid code
}
else if (v[p] < s)
{
r[0] = (byte)(v[p] < 256?0:32 + 64); // 256 is end-of-block
r[2] = v[p++]; // simple code is just the value
}
else
{
r[0] = (byte)(e[v[p] - s] + 16 + 64); // non-simple--look up in lists
r[2] = d[v[p++] - s];
}
// fill code-like entries with r
f = 1 << (k - w);
for (j = SupportClass.URShift(i, w); j < z; j += f)
{
Array.Copy(r, 0, hp, (q + j) * 3, 3);
}
// backwards increment the k-bit code i
for (j = 1 << (k - 1); (i & j) != 0; j = SupportClass.URShift(j, 1))
{
i ^= j;
}
i ^= j;
// backup over finished tables
mask = (1 << w) - 1; // needed on HP, cc -O bug
while ((i & mask) != x[h])
{
h--; // don't need to update q
w -= l;
mask = (1 << w) - 1;
}
}
}
// Return Z_BUF_ERROR if we were given an incomplete table
return(y != 0 && g != 1?Z_BUF_ERROR:Z_OK);
}
internal int proc(ZStream z, int r)
{
int num = z.next_in_index;
int num2 = z.avail_in;
int num3 = this.bitb;
int i = this.bitk;
int num4 = this.write;
int num5 = (num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4);
int num6;
while (true)
{
switch (this.mode)
{
case 0:
while (i < 3)
{
if (num2 == 0)
{
goto IL_8C;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num6 = (num3 & 7);
this.last = (num6 & 1);
switch (SupportClass.URShift(num6, 1))
{
case 0:
num3 = SupportClass.URShift(num3, 3);
i -= 3;
num6 = (i & 7);
num3 = SupportClass.URShift(num3, num6);
i -= num6;
this.mode = 1;
continue;
case 1:
{
int[] array = new int[1];
int[] array2 = new int[1];
int[][] array3 = new int[1][];
int[][] array4 = new int[1][];
InfTree.inflate_trees_fixed(array, array2, array3, array4, z);
this.codes = new InfCodes(array[0], array2[0], array3[0], array4[0], z);
num3 = SupportClass.URShift(num3, 3);
i -= 3;
this.mode = 6;
continue;
}
case 2:
num3 = SupportClass.URShift(num3, 3);
i -= 3;
this.mode = 3;
continue;
case 3:
goto IL_1CD;
default:
continue;
}
break;
case 1:
while (i < 32)
{
if (num2 == 0)
{
goto IL_23D;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
if ((SupportClass.URShift(~num3, 16) & 65535) != (num3 & 65535))
{
goto Block_8;
}
this.left = (num3 & 65535);
i = (num3 = 0);
this.mode = ((this.left != 0) ? 2 : ((this.last != 0) ? 7 : 0));
continue;
case 2:
if (num2 == 0)
{
goto Block_11;
}
if (num5 == 0)
{
if (num4 == this.end && this.read != 0)
{
num4 = 0;
num5 = ((num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
}
if (num5 == 0)
{
this.write = num4;
r = this.inflate_flush(z, r);
num4 = this.write;
num5 = ((num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
if (num4 == this.end && this.read != 0)
{
num4 = 0;
num5 = ((num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
}
if (num5 == 0)
{
goto Block_21;
}
}
}
r = 0;
num6 = this.left;
if (num6 > num2)
{
num6 = num2;
}
if (num6 > num5)
{
num6 = num5;
}
Array.Copy(z.next_in, num, this.window, num4, num6);
num += num6;
num2 -= num6;
num4 += num6;
num5 -= num6;
if ((this.left -= num6) == 0)
{
this.mode = ((this.last != 0) ? 7 : 0);
continue;
}
continue;
case 3:
while (i < 14)
{
if (num2 == 0)
{
goto IL_515;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num6 = (this.table = (num3 & 16383));
if ((num6 & 31) > 29 || (num6 >> 5 & 31) > 29)
{
goto IL_5A3;
}
num6 = 258 + (num6 & 31) + (num6 >> 5 & 31);
this.blens = new int[num6];
num3 = SupportClass.URShift(num3, 14);
i -= 14;
this.index = 0;
this.mode = 4;
goto IL_6E2;
case 4:
goto IL_6E2;
case 5:
goto IL_7BB;
case 6:
goto IL_B66;
case 7:
goto IL_C2F;
case 8:
goto IL_CC4;
case 9:
goto IL_D0B;
}
break;
IL_6E2:
while (this.index < 4 + SupportClass.URShift(this.table, 10))
{
while (i < 3)
{
if (num2 == 0)
{
goto IL_646;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
int[] arg_6D5_0 = this.blens;
int[] arg_6D1_0 = InfBlocks.border;
int num7 = this.index;
this.index = num7 + 1;
arg_6D5_0[arg_6D1_0[num7]] = (num3 & 7);
num3 = SupportClass.URShift(num3, 3);
i -= 3;
}
while (this.index < 19)
{
int[] arg_71C_0 = this.blens;
int[] arg_71A_0 = InfBlocks.border;
int num7 = this.index;
this.index = num7 + 1;
arg_71C_0[arg_71A_0[num7]] = 0;
}
this.bb[0] = 7;
num6 = InfTree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, z);
if (num6 != 0)
{
goto Block_33;
}
this.index = 0;
this.mode = 5;
IL_7BB:
while (true)
{
num6 = this.table;
if (this.index >= 258 + (num6 & 31) + (num6 >> 5 & 31))
{
break;
}
num6 = this.bb[0];
while (i < num6)
{
if (num2 == 0)
{
goto IL_7F2;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
int arg_868_0 = this.tb[0];
num6 = this.hufts[(this.tb[0] + (num3 & InfBlocks.inflate_mask[num6])) * 3 + 1];
int num8 = this.hufts[(this.tb[0] + (num3 & InfBlocks.inflate_mask[num6])) * 3 + 2];
if (num8 < 16)
{
num3 = SupportClass.URShift(num3, num6);
i -= num6;
int[] arg_8D4_0 = this.blens;
int num7 = this.index;
this.index = num7 + 1;
arg_8D4_0[num7] = num8;
}
else
{
int num9 = (num8 == 18) ? 7 : (num8 - 14);
int num10 = (num8 == 18) ? 11 : 3;
while (i < num6 + num9)
{
if (num2 == 0)
{
goto IL_902;
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num3 = SupportClass.URShift(num3, num6);
i -= num6;
num10 += (num3 & InfBlocks.inflate_mask[num9]);
num3 = SupportClass.URShift(num3, num9);
i -= num9;
num9 = this.index;
num6 = this.table;
if (num9 + num10 > 258 + (num6 & 31) + (num6 >> 5 & 31) || (num8 == 16 && num9 < 1))
{
goto IL_9CC;
}
num8 = ((num8 == 16) ? this.blens[num9 - 1] : 0);
do
{
this.blens[num9++] = num8;
}while (--num10 != 0);
this.index = num9;
}
}
this.tb[0] = -1;
int[] array5 = new int[1];
int[] array6 = new int[1];
int[] array7 = new int[1];
int[] array8 = new int[1];
array5[0] = 9;
array6[0] = 6;
num6 = this.table;
num6 = InfTree.inflate_trees_dynamic(257 + (num6 & 31), 1 + (num6 >> 5 & 31), this.blens, array5, array6, array7, array8, this.hufts, z);
if (num6 != 0)
{
goto Block_47;
}
this.codes = new InfCodes(array5[0], array6[0], this.hufts, array7[0], this.hufts, array8[0], z);
this.blens = null;
this.mode = 6;
IL_B66:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
if ((r = this.codes.proc(this, z, r)) != 1)
{
goto Block_49;
}
r = 0;
this.codes.free(z);
num = z.next_in_index;
num2 = z.avail_in;
num3 = this.bitb;
i = this.bitk;
num4 = this.write;
num5 = ((num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
if (this.last != 0)
{
goto IL_C28;
}
this.mode = 0;
}
r = -2;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_8C:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_1CD:
num3 = SupportClass.URShift(num3, 3);
i -= 3;
this.mode = 9;
z.msg = "invalid block type";
r = -3;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_23D:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
Block_8:
this.mode = 9;
z.msg = "invalid stored block lengths";
r = -3;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
Block_11:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
Block_21:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_515:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_5A3:
this.mode = 9;
z.msg = "too many length or distance symbols";
r = -3;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_646:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
Block_33:
r = num6;
if (r == -3)
{
this.blens = null;
this.mode = 9;
}
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_7F2:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_902:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_9CC:
this.blens = null;
this.mode = 9;
z.msg = "invalid bit length repeat";
r = -3;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
Block_47:
if (num6 == -3)
{
this.blens = null;
this.mode = 9;
}
r = num6;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
Block_49:
return(this.inflate_flush(z, r));
IL_C28:
this.mode = 7;
IL_C2F:
this.write = num4;
r = this.inflate_flush(z, r);
num4 = this.write;
int arg_C69_0 = (num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4);
if (this.read != this.write)
{
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
}
this.mode = 8;
IL_CC4:
r = 1;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
IL_D0B:
r = -3;
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
return(this.inflate_flush(z, r));
}
internal void scan_tree(short[] tree, int max_code)
{
int num = -1;
int num2 = (int)tree[1];
int num3 = 0;
int num4 = 7;
int num5 = 4;
if (num2 == 0)
{
num4 = 138;
num5 = 3;
}
tree[(max_code + 1) * 2 + 1] = (short)SupportClass.Identity(65535L);
for (int i = 0; i <= max_code; i++)
{
int num6 = num2;
num2 = (int)tree[(i + 1) * 2 + 1];
if (++num3 >= num4 || num6 != num2)
{
if (num3 < num5)
{
this.bl_tree[num6 * 2] = (short)((int)this.bl_tree[num6 * 2] + num3);
}
else if (num6 != 0)
{
if (num6 != num)
{
short[] expr_8B_cp_0 = this.bl_tree;
int expr_8B_cp_1 = num6 * 2;
expr_8B_cp_0[expr_8B_cp_1] += 1;
}
short[] expr_A6_cp_0 = this.bl_tree;
int expr_A6_cp_1 = 32;
expr_A6_cp_0[expr_A6_cp_1] += 1;
}
else if (num3 <= 10)
{
short[] expr_C9_cp_0 = this.bl_tree;
int expr_C9_cp_1 = 34;
expr_C9_cp_0[expr_C9_cp_1] += 1;
}
else
{
short[] expr_E6_cp_0 = this.bl_tree;
int expr_E6_cp_1 = 36;
expr_E6_cp_0[expr_E6_cp_1] += 1;
}
num3 = 0;
num = num6;
if (num2 == 0)
{
num4 = 138;
num5 = 3;
}
else if (num6 == num2)
{
num4 = 6;
num5 = 3;
}
else
{
num4 = 7;
num5 = 4;
}
}
}
}
internal int proc(InfBlocks s, ZStream z, int r)
{
int j; // temporary storage
//int[] t; // temporary pointer
int tindex; // temporary pointer
int e; // extra bits or operation
int b = 0; // bit buffer
int k = 0; // bits in bit buffer
int p = 0; // input data pointer
int n; // bytes available there
int q; // output window write pointer
int m; // bytes to end of window or read pointer
int f; // pointer to copy strings from
// copy input/output information to locals (UPDATE macro restores)
p = z.next_in_index; n = z.avail_in; b = s.bitb; k = s.bitk;
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
// process input and output based on current state
while (true)
{
switch (mode)
{
// waiting for "i:"=input, "o:"=output, "x:"=nothing
case START: // x: set up for LEN
if (m >= 258 && n >= 10)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
r = inflate_fast(lbits, dbits, ltree, ltree_index, dtree, dtree_index, s, z);
p = z.next_in_index; n = z.avail_in; b = s.bitb; k = s.bitk;
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (r != Z_OK)
{
mode = r == Z_STREAM_END?WASH:BADCODE;
break;
}
}
need = lbits;
tree = ltree;
tree_index = ltree_index;
mode = LEN;
goto case LEN;
case LEN: // i: get length/literal/eob next
j = need;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--;
b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
tindex = (tree_index + (b & inflate_mask[j])) * 3;
b = SupportClass.URShift(b, (tree[tindex + 1]));
k -= (tree[tindex + 1]);
e = tree[tindex];
if (e == 0)
{
// literal
lit = tree[tindex + 2];
mode = LIT;
break;
}
if ((e & 16) != 0)
{
// length
get_Renamed = e & 15;
len = tree[tindex + 2];
mode = LENEXT;
break;
}
if ((e & 64) == 0)
{
// next table
need = e;
tree_index = tindex / 3 + tree[tindex + 2];
break;
}
if ((e & 32) != 0)
{
// end of block
mode = WASH;
break;
}
mode = BADCODE; // invalid code
z.msg = "invalid literal/length code";
r = Z_DATA_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
case LENEXT: // i: getting length extra (have base)
j = get_Renamed;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--; b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
len += (b & inflate_mask[j]);
b >>= j;
k -= j;
need = dbits;
tree = dtree;
tree_index = dtree_index;
mode = DIST;
goto case DIST;
case DIST: // i: get distance next
j = need;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--; b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
tindex = (tree_index + (b & inflate_mask[j])) * 3;
b >>= tree[tindex + 1];
k -= tree[tindex + 1];
e = (tree[tindex]);
if ((e & 16) != 0)
{
// distance
get_Renamed = e & 15;
dist = tree[tindex + 2];
mode = DISTEXT;
break;
}
if ((e & 64) == 0)
{
// next table
need = e;
tree_index = tindex / 3 + tree[tindex + 2];
break;
}
mode = BADCODE; // invalid code
z.msg = "invalid distance code";
r = Z_DATA_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
case DISTEXT: // i: getting distance extra
j = get_Renamed;
while (k < (j))
{
if (n != 0)
{
r = Z_OK;
}
else
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
n--; b |= (z.next_in[p++] & 0xff) << k;
k += 8;
}
dist += (b & inflate_mask[j]);
b >>= j;
k -= j;
mode = COPY;
goto case COPY;
case COPY: // o: copying bytes in window, waiting for space
f = q - dist;
while (f < 0)
{
// modulo window size-"while" instead
f += s.end; // of "if" handles invalid distances
}
while (len != 0)
{
if (m == 0)
{
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.write = q; r = s.inflate_flush(z, r);
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
}
}
s.window[q++] = s.window[f++]; m--;
if (f == s.end)
{
f = 0;
}
len--;
}
mode = START;
break;
case LIT: // o: got literal, waiting for output space
if (m == 0)
{
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.write = q; r = s.inflate_flush(z, r);
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (q == s.end && s.read != 0)
{
q = 0; m = q < s.read?s.read - q - 1:s.end - q;
}
if (m == 0)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
}
}
r = Z_OK;
s.window[q++] = (byte)lit; m--;
mode = START;
break;
case WASH: // o: got eob, possibly more output
if (k > 7)
{
// return unused byte, if any
k -= 8;
n++;
p--; // can always return one
}
s.write = q; r = s.inflate_flush(z, r);
q = s.write; m = q < s.read?s.read - q - 1:s.end - q;
if (s.read != s.write)
{
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
mode = END;
goto case END;
case END:
r = Z_STREAM_END;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
case BADCODE: // x: got error
r = Z_DATA_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
default:
r = Z_STREAM_ERROR;
s.bitb = b; s.bitk = k;
z.avail_in = n; z.total_in += p - z.next_in_index; z.next_in_index = p;
s.write = q;
return(s.inflate_flush(z, r));
}
}
}
internal static int huft_build(int[] b, int bindex, int n, int s, int[] d, int[] e, int[] t, int[] m, int[] hp, int[] hn, int[] v)
{
int[] numArray1 = new int[0x10];
int[] numArray2 = new int[3];
int[] numArray3 = new int[15];
int[] numArray4 = new int[0x10];
int num10 = 0;
int num5 = n;
do
{
numArray1[b[bindex + num10]]++;
num10++;
num5--;
}while (num5 != 0);
if (numArray1[0] == n)
{
t[0] = -1;
m[0] = 0;
return(0);
}
int num8 = m[0];
int num6 = 1;
while (num6 <= 15)
{
if (numArray1[num6] != 0)
{
break;
}
num6++;
}
int num7 = num6;
if (num8 < num6)
{
num8 = num6;
}
num5 = 15;
while (num5 != 0)
{
if (numArray1[num5] != 0)
{
break;
}
num5--;
}
int num3 = num5;
if (num8 > num5)
{
num8 = num5;
}
m[0] = num8;
int num14 = 1 << (num6 & 0x1f);
while (num6 < num5)
{
num14 -= numArray1[num6];
if (num14 < 0)
{
return(-3);
}
num6++;
num14 = num14 << 1;
}
num14 -= numArray1[num5];
if (num14 < 0)
{
return(-3);
}
numArray1[num5] += num14;
numArray4[1] = num6 = 0;
num10 = 1;
int num13 = 2;
while (--num5 != 0)
{
numArray4[num13] = num6 += numArray1[num10];
num13++;
num10++;
}
num5 = 0;
num10 = 0;
do
{
num6 = b[bindex + num10];
if (num6 != 0)
{
v[numArray4[num6]++] = num5;
}
num10++;
}while (++num5 < n);
n = numArray4[num3];
numArray4[0] = num5 = 0;
num10 = 0;
int num4 = -1;
int num12 = -num8;
numArray3[0] = 0;
int num11 = 0;
int num15 = 0;
while (num7 <= num3)
{
int num2;
int num1 = numArray1[num7];
goto Label_03BD;
Label_01B2:
num4++;
num12 += num8;
num15 = num3 - num12;
num15 = (num15 > num8) ? num8 : num15;
if ((num2 = 1 << ((num6 = num7 - num12) & 0x1f)) > (num1 + 1))
{
num2 -= num1 + 1;
num13 = num7;
if (num6 < num15)
{
while (++num6 < num15)
{
if ((num2 = num2 << 1) <= numArray1[++num13])
{
break;
}
num2 -= numArray1[num13];
}
}
}
num15 = 1 << (num6 & 0x1f);
if ((hn[0] + num15) > 0x5a0)
{
return(-3);
}
numArray3[num4] = num11 = hn[0];
hn[0] += num15;
if (num4 != 0)
{
numArray4[num4] = num5;
numArray2[0] = (byte)num6;
numArray2[1] = (byte)num8;
num6 = SupportClass.URShift(num5, num12 - num8);
numArray2[2] = (num11 - numArray3[num4 - 1]) - num6;
Array.Copy(numArray2, 0, hp, (numArray3[num4 - 1] + num6) * 3, 3);
}
else
{
t[0] = num11;
}
Label_02AE:
if (num7 > (num12 + num8))
{
goto Label_01B2;
}
numArray2[1] = (byte)(num7 - num12);
if (num10 >= n)
{
numArray2[0] = 0xc0;
}
else if (v[num10] < s)
{
numArray2[0] = (v[num10] < 0x100) ? ((byte)0) : ((byte)0x60);
numArray2[2] = v[num10++];
}
else
{
numArray2[0] = (byte)((e[v[num10] - s] + 0x10) + 0x40);
numArray2[2] = d[v[num10++] - s];
}
num2 = 1 << ((num7 - num12) & 0x1f);
num6 = SupportClass.URShift(num5, num12);
while (num6 < num15)
{
Array.Copy(numArray2, 0, hp, (num11 + num6) * 3, 3);
num6 += num2;
}
num6 = 1 << ((num7 - 1) & 0x1f);
while ((num5 & num6) != 0)
{
num5 ^= num6;
num6 = SupportClass.URShift(num6, 1);
}
num5 ^= num6;
for (int num9 = (1 << (num12 & 0x1f)) - 1; (num5 & num9) != numArray4[num4]; num9 = (1 << (num12 & 0x1f)) - 1)
{
num4--;
num12 -= num8;
}
Label_03BD:
if (num1-- != 0)
{
goto Label_02AE;
}
num7++;
}
if ((num14 != 0) && (num3 != 1))
{
return(-5);
}
return(0);
}
// zlib.InfBlocks
// zlib.InfBlocks
internal int proc(ZStream z, int r)
{
int num = z.next_in_index;
int num2 = z.avail_in;
int num3 = this.bitb;
int i = this.bitk;
int num4 = this.write;
int num5 = (num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4);
int num6;
while (true)
{
switch (this.mode)
{
case 0:
while (i < 3)
{
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num6 = (num3 & 7);
this.last = (num6 & 1);
switch (SupportClass.URShift(num6, 1))
{
case 0:
num3 = SupportClass.URShift(num3, 3);
i -= 3;
num6 = (i & 7);
num3 = SupportClass.URShift(num3, num6);
i -= num6;
this.mode = 1;
continue;
case 1:
{
int[] array = new int[1];
int[] array2 = new int[1];
int[][] array3 = new int[1][];
int[][] array4 = new int[1][];
InfTree.inflate_trees_fixed(array, array2, array3, array4, z);
this.codes = new InfCodes(array[0], array2[0], array3[0], array4[0], z);
num3 = SupportClass.URShift(num3, 3);
i -= 3;
this.mode = 6;
continue;
}
case 2:
num3 = SupportClass.URShift(num3, 3);
i -= 3;
this.mode = 3;
continue;
case 3:
num3 = SupportClass.URShift(num3, 3);
i -= 3;
this.mode = 9;
z.msg = "invalid block type";
return(procRet(z, i, -3, num, num2, num3, num4));
default:
continue;
}
break;
case 1:
{
while (i < 32)
{
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
if ((SupportClass.URShift(~num3, 16) & 65535) != (num3 & 65535))
{
this.mode = 9;
z.msg = "invalid stored block lengths";
return(procRet(z, i, -3, num, num2, num3, num4));
}
this.left = (num3 & 65535);
int arg_686_0 = 0;
i = 0;
num3 = arg_686_0;
this.mode = ((this.left != 0) ? 2 : ((this.last != 0) ? 7 : 0));
continue;
}
case 2:
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
if (num5 == 0)
{
if (num4 == this.end && this.read != 0)
{
num4 = 0;
num5 = ((0 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
}
if (num5 == 0)
{
this.write = num4;
r = this.inflate_flush(z, r);
num4 = this.write;
num5 = ((num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
if (num4 == this.end && this.read != 0)
{
num4 = 0;
num5 = ((0 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
}
if (num5 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
}
}
r = 0;
num6 = this.left;
if (num6 > num2)
{
num6 = num2;
}
if (num6 > num5)
{
num6 = num5;
}
Array.Copy(z.next_in, num, this.window, num4, num6);
num += num6;
num2 -= num6;
num4 += num6;
num5 -= num6;
if ((this.left -= num6) == 0)
{
this.mode = ((this.last != 0) ? 7 : 0);
continue;
}
continue;
case 3:
while (i < 14)
{
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num6 = (this.table = (num3 & 16383));
if ((num6 & 31) <= 29 && (num6 >> 5 & 31) <= 29)
{
num6 = 258 + (num6 & 31) + (num6 >> 5 & 31);
this.blens = new int[num6];
num3 = SupportClass.URShift(num3, 14);
i -= 14;
this.index = 0;
this.mode = 4;
goto case 4;
}
this.mode = 9;
z.msg = "too many length or distance symbols";
return(procRet(z, i, -3, num, num2, num3, num4));
case 4:
while (this.index < 4 + SupportClass.URShift(this.table, 10))
{
while (i < 3)
{
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
this.blens[InfBlocks.border[this.index++]] = (num3 & 7);
num3 = SupportClass.URShift(num3, 3);
i -= 3;
}
while (this.index < 19)
{
this.blens[InfBlocks.border[this.index++]] = 0;
}
this.bb[0] = 7;
num6 = InfTree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, z);
if (num6 == 0)
{
this.index = 0;
this.mode = 5;
goto case 5;
}
if (num6 == -3)
{
this.blens = null;
this.mode = 9;
}
return(procRet(z, i, num6, num, num2, num3, num4));
case 5:
while (true)
{
num6 = this.table;
if (this.index >= 258 + (num6 & 31) + (num6 >> 5 & 31))
{
break;
}
num6 = this.bb[0];
while (i < num6)
{
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num6 = this.hufts[(this.tb[0] + (num3 & InfBlocks.inflate_mask[num6])) * 3 + 1];
int num7 = this.hufts[(this.tb[0] + (num3 & InfBlocks.inflate_mask[num6])) * 3 + 2];
if (num7 < 16)
{
num3 = SupportClass.URShift(num3, num6);
i -= num6;
this.blens[this.index++] = num7;
}
else
{
int num8 = (num7 == 18) ? 7 : (num7 - 14);
int num9 = (num7 == 18) ? 11 : 3;
while (i < num6 + num8)
{
if (num2 == 0)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
r = 0;
num2--;
num3 |= (int)(z.next_in[num++] & 255) << i;
i += 8;
}
num3 = SupportClass.URShift(num3, num6);
i -= num6;
num9 += (num3 & InfBlocks.inflate_mask[num8]);
num3 = SupportClass.URShift(num3, num8);
i -= num8;
num8 = this.index;
num6 = this.table;
if (num8 + num9 > 258 + (num6 & 31) + (num6 >> 5 & 31) || (num7 == 16 && num8 < 1))
{
this.blens = null;
this.mode = 9;
z.msg = "invalid bit length repeat";
return(procRet(z, i, -3, num, num2, num3, num4));
}
num7 = ((num7 == 16) ? this.blens[num8 - 1] : 0);
do
{
this.blens[num8++] = num7;
} while (--num9 != 0);
this.index = num8;
}
}
this.tb[0] = -1;
int[] array5 = new int[1];
int[] array6 = new int[1];
int[] array7 = new int[1];
int[] array8 = new int[1];
array5[0] = 9;
array6[0] = 6;
num6 = this.table;
num6 = InfTree.inflate_trees_dynamic(257 + (num6 & 31), 1 + (num6 >> 5 & 31), this.blens, array5, array6, array7, array8, this.hufts, z);
if (num6 == 0)
{
this.codes = new InfCodes(array5[0], array6[0], this.hufts, array7[0], this.hufts, array8[0], z);
this.blens = null;
this.mode = 6;
goto case 6;
}
if (num6 == -3)
{
this.blens = null;
this.mode = 9;
}
return(procRet(z, i, num6, num, num2, num3, num4));
case 6:
this.bitb = num3;
this.bitk = i;
z.avail_in = num2;
z.total_in += (long)(num - z.next_in_index);
z.next_in_index = num;
this.write = num4;
if ((r = this.codes.proc(this, z, r)) != 1)
{
break;
}
r = 0;
this.codes.free(z);
num = z.next_in_index;
num2 = z.avail_in;
num3 = this.bitb;
i = this.bitk;
num4 = this.write;
num5 = ((num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4));
if (this.last != 0)
{
this.mode = 7;
goto case 7;
}
this.mode = 0;
continue;
case 7:
this.write = num4;
r = this.inflate_flush(z, r);
num4 = this.write;
int arg_CC8_0 = (num4 < this.read) ? (this.read - num4 - 1) : (this.end - num4);
if (this.read != this.write)
{
return(procRet(z, i, r, num, num2, num3, num4));
}
this.mode = 8;
goto case 8;
case 8:
return(procRet(z, i, 1, num, num2, num3, num4));
case 9:
return(procRet(z, i, -3, num, num2, num3, num4));
}
return(procRet(z, i, -2, num, num2, num3, num4));
}
return(this.inflate_flush(z, r));
}
internal int proc(ZStream z, int r)
{
int num1;
int num4 = z.next_in_index;
int num5 = z.avail_in;
int num2 = this.bitb;
int num3 = this.bitk;
int num6 = this.write;
int num7 = (num6 < this.read) ? ((this.read - num6) - 1) : (this.end - num6);
Label_0047:
switch (this.mode)
{
case 0:
while (num3 < 3)
{
if (num5 != 0)
{
r = 0;
}
else
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num5--;
num2 |= (z.next_in[num4++] & 0xff) << (num3 & 0x1f);
num3 += 8;
}
num1 = num2 & 7;
this.last = num1 & 1;
switch (SupportClass.URShift(num1, 1))
{
case 0:
num2 = SupportClass.URShift(num2, 3);
num3 -= 3;
num1 = num3 & 7;
num2 = SupportClass.URShift(num2, num1);
num3 -= num1;
this.mode = 1;
goto Label_0047;
case 1:
{
int[] numArray1 = new int[1];
int[] numArray2 = new int[1];
int[][] numArrayArray1 = new int[1][];
int[][] numArrayArray2 = new int[1][];
InfTree.inflate_trees_fixed(numArray1, numArray2, numArrayArray1, numArrayArray2, z);
this.codes = new InfCodes(numArray1[0], numArray2[0], numArrayArray1[0], numArrayArray2[0], z);
num2 = SupportClass.URShift(num2, 3);
num3 -= 3;
this.mode = 6;
goto Label_0047;
}
case 2:
num2 = SupportClass.URShift(num2, 3);
num3 -= 3;
this.mode = 3;
goto Label_0047;
case 3:
num2 = SupportClass.URShift(num2, 3);
num3 -= 3;
this.mode = 9;
z.msg = "invalid block type";
r = -3;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
goto Label_0047;
case 1:
while (num3 < 0x20)
{
if (num5 != 0)
{
r = 0;
}
else
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num5--;
num2 |= (z.next_in[num4++] & 0xff) << (num3 & 0x1f);
num3 += 8;
}
if ((SupportClass.URShift(~num2, 0x10) & 0xffff) != (num2 & 0xffff))
{
this.mode = 9;
z.msg = "invalid stored block lengths";
r = -3;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
this.left = num2 & 0xffff;
num2 = num3 = 0;
this.mode = (this.left != 0) ? 2 : ((this.last != 0) ? 7 : 0);
goto Label_0047;
case 2:
if (num5 == 0)
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
if (num7 == 0)
{
if ((num6 == this.end) && (this.read != 0))
{
num6 = 0;
num7 = (num6 < this.read) ? ((this.read - num6) - 1) : (this.end - num6);
}
if (num7 == 0)
{
this.write = num6;
r = this.inflate_flush(z, r);
num6 = this.write;
num7 = (num6 < this.read) ? ((this.read - num6) - 1) : (this.end - num6);
if ((num6 == this.end) && (this.read != 0))
{
num6 = 0;
num7 = (num6 < this.read) ? ((this.read - num6) - 1) : (this.end - num6);
}
if (num7 == 0)
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
}
}
r = 0;
num1 = this.left;
if (num1 > num5)
{
num1 = num5;
}
if (num1 > num7)
{
num1 = num7;
}
Array.Copy(z.next_in, num4, this.window, num6, num1);
num4 += num1;
num5 -= num1;
num6 += num1;
num7 -= num1;
this.left -= num1;
if (this.left == 0)
{
this.mode = (this.last != 0) ? 7 : 0;
}
goto Label_0047;
case 3:
while (num3 < 14)
{
if (num5 != 0)
{
r = 0;
}
else
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num5--;
num2 |= (z.next_in[num4++] & 0xff) << (num3 & 0x1f);
num3 += 8;
}
this.table = num1 = num2 & 0x3fff;
if (((num1 & 0x1f) > 0x1d) || (((num1 >> 5) & 0x1f) > 0x1d))
{
this.mode = 9;
z.msg = "too many length or distance symbols";
r = -3;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num1 = (0x102 + (num1 & 0x1f)) + ((num1 >> 5) & 0x1f);
this.blens = new int[num1];
num2 = SupportClass.URShift(num2, 14);
num3 -= 14;
this.index = 0;
this.mode = 4;
goto Label_06E1;
case 4:
goto Label_06E1;
case 5:
goto Label_07B9;
case 6:
goto Label_0B63;
case 7:
goto Label_0C2C;
case 8:
goto Label_0CC1;
case 9:
r = -3;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
default:
r = -2;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
Label_06E1:
if (this.index < (4 + SupportClass.URShift(this.table, 10)))
{
while (num3 < 3)
{
if (num5 != 0)
{
r = 0;
}
else
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num5--;
num2 |= (z.next_in[num4++] & 0xff) << (num3 & 0x1f);
num3 += 8;
}
this.blens[InfBlocks.border[this.index++]] = num2 & 7;
num2 = SupportClass.URShift(num2, 3);
num3 -= 3;
goto Label_06E1;
}
while (this.index < 0x13)
{
this.blens[InfBlocks.border[this.index++]] = 0;
}
this.bb[0] = 7;
num1 = InfTree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, z);
if (num1 != 0)
{
r = num1;
if (r == -3)
{
this.blens = null;
this.mode = 9;
}
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
this.index = 0;
this.mode = 5;
Label_07B9:
num1 = this.table;
if (this.index < ((0x102 + (num1 & 0x1f)) + ((num1 >> 5) & 0x1f)))
{
num1 = this.bb[0];
while (num3 < num1)
{
if (num5 != 0)
{
r = 0;
}
else
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num5--;
num2 |= (z.next_in[num4++] & 0xff) << (num3 & 0x1f);
num3 += 8;
}
int num17 = this.tb[0];
num1 = this.hufts[((this.tb[0] + (num2 & InfBlocks.inflate_mask[num1])) * 3) + 1];
int num10 = this.hufts[((this.tb[0] + (num2 & InfBlocks.inflate_mask[num1])) * 3) + 2];
if (num10 < 0x10)
{
num2 = SupportClass.URShift(num2, num1);
num3 -= num1;
this.blens[this.index++] = num10;
goto Label_07B9;
}
int num8 = (num10 == 0x12) ? 7 : (num10 - 14);
int num9 = (num10 == 0x12) ? 11 : 3;
while (num3 < (num1 + num8))
{
if (num5 != 0)
{
r = 0;
}
else
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num5--;
num2 |= (z.next_in[num4++] & 0xff) << (num3 & 0x1f);
num3 += 8;
}
num2 = SupportClass.URShift(num2, num1);
num3 -= num1;
num9 += num2 & InfBlocks.inflate_mask[num8];
num2 = SupportClass.URShift(num2, num8);
num3 -= num8;
num8 = this.index;
num1 = this.table;
if (((num8 + num9) > ((0x102 + (num1 & 0x1f)) + ((num1 >> 5) & 0x1f))) || ((num10 == 0x10) && (num8 < 1)))
{
this.blens = null;
this.mode = 9;
z.msg = "invalid bit length repeat";
r = -3;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
num10 = (num10 == 0x10) ? this.blens[num8 - 1] : 0;
do
{
this.blens[num8++] = num10;
}while (--num9 != 0);
this.index = num8;
goto Label_07B9;
}
this.tb[0] = -1;
int[] numArray3 = new int[1];
int[] numArray4 = new int[1];
int[] numArray5 = new int[1];
int[] numArray6 = new int[1];
numArray3[0] = 9;
numArray4[0] = 6;
num1 = this.table;
num1 = InfTree.inflate_trees_dynamic(0x101 + (num1 & 0x1f), 1 + ((num1 >> 5) & 0x1f), this.blens, numArray3, numArray4, numArray5, numArray6, this.hufts, z);
switch (num1)
{
case 0:
this.codes = new InfCodes(numArray3[0], numArray4[0], this.hufts, numArray5[0], this.hufts, numArray6[0], z);
this.blens = null;
this.mode = 6;
goto Label_0B63;
case -3:
this.blens = null;
this.mode = 9;
break;
}
r = num1;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
Label_0B63:
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
if ((r = this.codes.proc(this, z, r)) != 1)
{
return(this.inflate_flush(z, r));
}
r = 0;
this.codes.free(z);
num4 = z.next_in_index;
num5 = z.avail_in;
num2 = this.bitb;
num3 = this.bitk;
num6 = this.write;
num7 = (num6 < this.read) ? ((this.read - num6) - 1) : (this.end - num6);
if (this.last == 0)
{
this.mode = 0;
goto Label_0047;
}
this.mode = 7;
Label_0C2C:
this.write = num6;
r = this.inflate_flush(z, r);
num6 = this.write;
num7 = (num6 < this.read) ? ((this.read - num6) - 1) : (this.end - num6);
if (this.read != this.write)
{
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
this.mode = 8;
Label_0CC1:
r = 1;
this.bitb = num2;
this.bitk = num3;
z.avail_in = num5;
z.total_in += num4 - z.next_in_index;
z.next_in_index = num4;
this.write = num6;
return(this.inflate_flush(z, r));
}
public int read(byte[] b, int off, int len)
{
if (len == 0)
{
return(0);
}
int err;
z.next_out = b;
z.next_out_index = off;
z.avail_out = len;
do
{
if ((z.avail_in == 0) && (!nomoreinput))
{
// if buffer is empty and more input is avaiable, refill it
z.next_in_index = 0;
int inToRead = bufsize;
if (maxInput > 0)
{
if (TotalIn < maxInput)
{
inToRead = (int)(Math.Min(maxInput - TotalIn, (long)bufsize));
}
else
{
z.avail_in = -1;
}
}
if (z.avail_in != -1)
{
z.avail_in = SupportClass.ReadInput(in_Renamed, buf, 0, inToRead); //(bufsize<z.avail_out ? bufsize : z.avail_out));
}
if (z.avail_in == -1)
{
z.avail_in = 0;
nomoreinput = true;
}
}
if (compress)
{
err = z.deflate(flush);
}
else
{
err = z.inflate(flush);
}
if (nomoreinput && (err == zlibConst.Z_BUF_ERROR))
{
return(-1);
}
if (err != zlibConst.Z_OK && err != zlibConst.Z_STREAM_END)
{
throw new ZStreamException((compress ? "de" : "in") + "flating: " + z.msg);
}
if (nomoreinput && (z.avail_out == len))
{
return(-1);
}
}while (z.avail_out > 0 && err == zlibConst.Z_OK);
//while (z.avail_out == len && err == zlibConst.Z_OK);
//System.err.print("("+(len-z.avail_out)+")");
return(len - z.avail_out);
}
// Mapping from a distance to a distance code. dist is the distance - 1 and
// must not have side effects. _dist_code[256] and _dist_code[257] are never
// used.
internal static int d_code(int dist)
{
return((dist) < 256?_dist_code[dist]:_dist_code[256 + (SupportClass.URShift((dist), 7))]);
}
internal static int huft_build(int[] b, int bindex, int n, int s, int[] d, int[] e, int[] t, int[] m, int[] hp, int[] hn, int[] v)
{
int[] array = new int[16];
int[] array2 = new int[3];
int[] array3 = new int[15];
int[] array4 = new int[16];
int num = 0;
int num2 = n;
int[] array5;
IntPtr intPtr;
do
{
(array5 = array)[(int)(intPtr = (IntPtr)b[bindex + num])] = array5[(int)intPtr] + 1;
num++;
num2--;
}while (num2 != 0);
if (array[0] == n)
{
t[0] = -1;
m[0] = 0;
return(0);
}
int num3 = m[0];
int i = 1;
while (i <= 15 && array[i] == 0)
{
i++;
}
int j = i;
if (num3 < i)
{
num3 = i;
}
num2 = 15;
while (num2 != 0 && array[num2] == 0)
{
num2--;
}
int num4 = num2;
if (num3 > num2)
{
num3 = num2;
}
m[0] = num3;
int num5 = 1 << i;
while (i < num2)
{
if ((num5 -= array[i]) < 0)
{
return(-3);
}
i++;
num5 <<= 1;
}
if ((num5 -= array[num2]) < 0)
{
return(-3);
}
(array5 = array)[(int)(intPtr = (IntPtr)num2)] = array5[(int)intPtr] + num5;
int[] arg_109_0 = array4;
int arg_109_1 = 1;
int arg_109_2 = 0;
i = 0;
arg_109_0[arg_109_1] = arg_109_2;
num = 1;
int num6 = 2;
while (--num2 != 0)
{
i = (array4[num6] = i + array[num]);
num6++;
num++;
}
num2 = 0;
num = 0;
do
{
if ((i = b[bindex + num]) != 0)
{
int num7;
(array5 = array4)[(int)(intPtr = (IntPtr)i)] = (num7 = array5[(int)intPtr]) + 1;
v[num7] = num2;
}
num++;
}while (++num2 < n);
n = array4[num4];
int[] arg_188_0 = array4;
int arg_188_1 = 0;
int arg_188_2 = 0;
num2 = 0;
arg_188_0[arg_188_1] = arg_188_2;
num = 0;
int num8 = -1;
int num9 = -num3;
array3[0] = 0;
int num10 = 0;
int num11 = 0;
while (j <= num4)
{
int num12 = array[j];
while (num12-- != 0)
{
int num13;
while (j > num9 + num3)
{
num8++;
num9 += num3;
num11 = num4 - num9;
num11 = ((num11 > num3) ? num3 : num11);
if ((num13 = 1 << ((i = j - num9) & 31)) > num12 + 1)
{
num13 -= num12 + 1;
num6 = j;
if (i < num11)
{
while (++i < num11 && (num13 <<= 1) > array[++num6])
{
num13 -= array[num6];
}
}
}
num11 = 1 << i;
if (hn[0] + num11 > 1440)
{
return(-3);
}
num10 = (array3[num8] = hn[0]);
hn[0] = hn[0] + num11;
if (num8 != 0)
{
array4[num8] = num2;
array2[0] = (int)((byte)i);
array2[1] = (int)((byte)num3);
i = SupportClass.URShift(num2, num9 - num3);
array2[2] = num10 - array3[num8 - 1] - i;
Array.Copy(array2, 0, hp, (array3[num8 - 1] + i) * 3, 3);
}
else
{
t[0] = num10;
}
}
array2[1] = (int)((byte)(j - num9));
if (num >= n)
{
array2[0] = 192;
}
else if (v[num] < s)
{
array2[0] = (int)((v[num] < 256) ? 0 : 96);
array2[2] = v[num++];
}
else
{
array2[0] = (int)((byte)(e[v[num] - s] + 16 + 64));
array2[2] = d[v[num++] - s];
}
num13 = 1 << j - num9;
for (i = SupportClass.URShift(num2, num9); i < num11; i += num13)
{
Array.Copy(array2, 0, hp, (num10 + i) * 3, 3);
}
i = 1 << j - 1;
while ((num2 & i) != 0)
{
num2 ^= i;
i = SupportClass.URShift(i, 1);
}
num2 ^= i;
int num14 = (1 << num9) - 1;
while ((num2 & num14) != array4[num8])
{
num8--;
num9 -= num3;
num14 = (1 << num9) - 1;
}
}
j++;
}
if (num5 != 0)
{
if (num4 != 1)
{
return(-5);
}
}
return(0);
}
public static long URShift(long number, long bits)
{
return(SupportClass.URShift(number, (int)bits));
}
public int read(byte[] b, int off, int len)
{
if (len == 0)
{
return(0);
}
this.z.next_out = b;
this.z.next_out_index = off;
this.z.avail_out = len;
while (true)
{
if (this.z.avail_in == 0 && !this.nomoreinput)
{
this.z.next_in_index = 0;
int count = this.bufsize;
if (this.maxInput > 0L)
{
if (this.TotalIn < this.maxInput)
{
count = (int)Math.Min(this.maxInput - this.TotalIn, (long)this.bufsize);
}
else
{
this.z.avail_in = -1;
}
}
if (this.z.avail_in != -1)
{
this.z.avail_in = SupportClass.ReadInput(this.in_Renamed, this.buf, 0, count);
}
if (this.z.avail_in == -1)
{
this.z.avail_in = 0;
this.nomoreinput = true;
}
}
int num;
if (this.compress)
{
num = this.z.deflate(this.flush);
}
else
{
num = this.z.inflate(this.flush);
}
if (this.nomoreinput && num == -5)
{
break;
}
if (num != 0 && num != 1)
{
goto Block_12;
}
if (this.nomoreinput && this.z.avail_out == len)
{
return(-1);
}
if (this.z.avail_out <= 0 || num != 0)
{
goto IL_184;
}
}
return(-1);
Block_12:
throw new ZStreamException((this.compress ? "de" : "in") + "flating: " + this.z.msg);
IL_184:
return(len - this.z.avail_out);
}
internal static int huft_build(int[] b, int bindex, int n, int s, int[] d, int[] e, int[] t, int[] m, int[] hp, int[] hn, int[] v)
{
int[] array = new int[16];
int[] array2 = new int[3];
int[] array3 = new int[15];
int[] array4 = new int[16];
int num = 0;
int num2 = n;
do
{
array[b[bindex + num]]++;
num++;
num2--;
}while (num2 != 0);
if (array[0] == n)
{
t[0] = -1;
m[0] = 0;
return(0);
}
int num3 = m[0];
int i = 1;
while (i <= 15 && array[i] == 0)
{
i++;
}
int j = i;
if (num3 < i)
{
num3 = i;
}
num2 = 15;
while (num2 != 0 && array[num2] == 0)
{
num2--;
}
int num4 = num2;
if (num3 > num2)
{
num3 = num2;
}
m[0] = num3;
int num5 = 1 << i;
while (i < num2)
{
if ((num5 -= array[i]) < 0)
{
return(-3);
}
i++;
num5 <<= 1;
}
if ((num5 -= array[num2]) < 0)
{
return(-3);
}
array[num2] += num5;
i = (array4[1] = 0);
num = 1;
int num6 = 2;
while (--num2 != 0)
{
i = (array4[num6] = i + array[num]);
num6++;
num++;
}
num2 = 0;
num = 0;
do
{
if ((i = b[bindex + num]) != 0)
{
v[array4[i]++] = num2;
}
num++;
}while (++num2 < n);
n = array4[num4];
num2 = (array4[0] = 0);
num = 0;
int num7 = -1;
int num8 = -num3;
array3[0] = 0;
int num9 = 0;
int num10 = 0;
while (j <= num4)
{
int num11 = array[j];
while (num11-- != 0)
{
int num12;
while (j > num8 + num3)
{
num7++;
num8 += num3;
num10 = num4 - num8;
num10 = ((num10 > num3) ? num3 : num10);
if ((num12 = 1 << ((i = j - num8) & 31)) > num11 + 1)
{
num12 -= num11 + 1;
num6 = j;
if (i < num10)
{
while (++i < num10 && (num12 <<= 1) > array[++num6])
{
num12 -= array[num6];
}
}
}
num10 = 1 << i;
if (hn[0] + num10 > 1440)
{
return(-3);
}
num9 = (array3[num7] = hn[0]);
hn[0] += num10;
if (num7 != 0)
{
array4[num7] = num2;
array2[0] = (int)((byte)i);
array2[1] = (int)((byte)num3);
i = SupportClass.URShift(num2, num8 - num3);
array2[2] = num9 - array3[num7 - 1] - i;
Array.Copy(array2, 0, hp, (array3[num7 - 1] + i) * 3, 3);
}
else
{
t[0] = num9;
}
}
array2[1] = (int)((byte)(j - num8));
if (num >= n)
{
array2[0] = 192;
}
else
{
if (v[num] < s)
{
array2[0] = (int)((v[num] < 256) ? 0 : 96);
array2[2] = v[num++];
}
else
{
array2[0] = (int)((byte)(e[v[num] - s] + 16 + 64));
array2[2] = d[v[num++] - s];
}
}
num12 = 1 << j - num8;
for (i = SupportClass.URShift(num2, num8); i < num10; i += num12)
{
Array.Copy(array2, 0, hp, (num9 + i) * 3, 3);
}
i = 1 << j - 1;
while ((num2 & i) != 0)
{
num2 ^= i;
i = SupportClass.URShift(i, 1);
}
num2 ^= i;
int num13 = (1 << num8) - 1;
while ((num2 & num13) != array4[num7])
{
num7--;
num8 -= num3;
num13 = (1 << num8) - 1;
}
}
j++;
}
if (num5 == 0 || num4 == 1)
{
return(0);
}
return(-5);
}
