internal int Process(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 = _codec.NextIn;
n = _codec.AvailableBytesIn;
b = bitb;
k = bitk;
q = writeAt;
m = (int)(q < readAt ? readAt - q - 1 : end - q);
// process input based on current state
while (true)
{
switch (mode)
{
case InflateBlockMode.TYPE:
while (k < (3))
{
if (n != 0)
{
r = ZlibConstants.Z_OK;
}
else
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
n--;
b |= (_codec.InputBuffer[p++] & 0xff) << k;
k += 8;
}
t = (int)(b & 7);
last = t & 1;
switch ((uint)t >> 1)
{
case 0: // stored
b >>= 3; k -= (3);
t = k & 7; // go to byte boundary
b >>= t; k -= t;
mode = InflateBlockMode.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, _codec);
codes.Init(bl[0], bd[0], tl[0], 0, td[0], 0);
b >>= 3; k -= 3;
mode = InflateBlockMode.CODES;
break;
case 2: // dynamic
b >>= 3; k -= 3;
mode = InflateBlockMode.TABLE;
break;
case 3: // illegal
b >>= 3; k -= 3;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid block type";
r = ZlibConstants.Z_DATA_ERROR;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
break;
case InflateBlockMode.LENS:
while (k < (32))
{
if (n != 0)
{
r = ZlibConstants.Z_OK;
}
else
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
;
n--;
b |= (_codec.InputBuffer[p++] & 0xff) << k;
k += 8;
}
if ((((~b) >> 16) & 0xffff) != (b & 0xffff))
{
mode = InflateBlockMode.BAD;
_codec.Message = "invalid stored block lengths";
r = ZlibConstants.Z_DATA_ERROR;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
left = (b & 0xffff);
b = k = 0; // dump bits
mode = left != 0 ? InflateBlockMode.STORED : (last != 0 ? InflateBlockMode.DRY : InflateBlockMode.TYPE);
break;
case InflateBlockMode.STORED:
if (n == 0)
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
if (m == 0)
{
if (q == end && readAt != 0)
{
q = 0; m = (int)(q < readAt ? readAt - q - 1 : end - q);
}
if (m == 0)
{
writeAt = q;
r = Flush(r);
q = writeAt; m = (int)(q < readAt ? readAt - q - 1 : end - q);
if (q == end && readAt != 0)
{
q = 0; m = (int)(q < readAt ? readAt - q - 1 : end - q);
}
if (m == 0)
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
}
}
r = ZlibConstants.Z_OK;
t = left;
if (t > n)
{
t = n;
}
if (t > m)
{
t = m;
}
Array.Copy(_codec.InputBuffer, p, window, q, t);
p += t; n -= t;
q += t; m -= t;
if ((left -= t) != 0)
{
break;
}
mode = last != 0 ? InflateBlockMode.DRY : InflateBlockMode.TYPE;
break;
case InflateBlockMode.TABLE:
while (k < (14))
{
if (n != 0)
{
r = ZlibConstants.Z_OK;
}
else
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
n--;
b |= (_codec.InputBuffer[p++] & 0xff) << k;
k += 8;
}
table = t = (b & 0x3fff);
if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
{
mode = InflateBlockMode.BAD;
_codec.Message = "too many length or distance symbols";
r = ZlibConstants.Z_DATA_ERROR;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
if (blens == null || blens.Length < t)
{
blens = new int[t];
}
else
{
Array.Clear(blens, 0, t);
// for (int i = 0; i < t; i++)
// {
// blens[i] = 0;
// }
}
b >>= 14;
k -= 14;
index = 0;
mode = InflateBlockMode.BTREE;
goto case InflateBlockMode.BTREE;
case InflateBlockMode.BTREE:
while (index < 4 + (table >> 10))
{
while (k < (3))
{
if (n != 0)
{
r = ZlibConstants.Z_OK;
}
else
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
n--;
b |= (_codec.InputBuffer[p++] & 0xff) << k;
k += 8;
}
blens[border[index++]] = b & 7;
b >>= 3; k -= 3;
}
while (index < 19)
{
blens[border[index++]] = 0;
}
bb[0] = 7;
t = inftree.inflate_trees_bits(blens, bb, tb, hufts, _codec);
if (t != ZlibConstants.Z_OK)
{
r = t;
if (r == ZlibConstants.Z_DATA_ERROR)
{
blens = null;
mode = InflateBlockMode.BAD;
}
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
index = 0;
mode = InflateBlockMode.DTREE;
goto case InflateBlockMode.DTREE;
case InflateBlockMode.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 = ZlibConstants.Z_OK;
}
else
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
n--;
b |= (_codec.InputBuffer[p++] & 0xff) << k;
k += 8;
}
t = hufts[(tb[0] + (b & InternalInflateConstants.InflateMask[t])) * 3 + 1];
c = hufts[(tb[0] + (b & InternalInflateConstants.InflateMask[t])) * 3 + 2];
if (c < 16)
{
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 = ZlibConstants.Z_OK;
}
else
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
n--;
b |= (_codec.InputBuffer[p++] & 0xff) << k;
k += 8;
}
b >>= t; k -= t;
j += (b & InternalInflateConstants.InflateMask[i]);
b >>= i; k -= i;
i = index;
t = table;
if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) || (c == 16 && i < 1))
{
blens = null;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid bit length repeat";
r = ZlibConstants.Z_DATA_ERROR;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
c = (c == 16) ? blens[i - 1] : 0;
do
{
blens[i++] = c;
}while (--j != 0);
index = i;
}
}
tb[0] = -1;
{
int[] bl = new int[] { 9 }; // must be <= 9 for lookahead assumptions
int[] bd = new int[] { 6 }; // must be <= 9 for lookahead assumptions
int[] tl = new int[1];
int[] td = new int[1];
t = table;
t = inftree.inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f), blens, bl, bd, tl, td, hufts, _codec);
if (t != ZlibConstants.Z_OK)
{
if (t == ZlibConstants.Z_DATA_ERROR)
{
blens = null;
mode = InflateBlockMode.BAD;
}
r = t;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
codes.Init(bl[0], bd[0], hufts, tl[0], hufts, td[0]);
}
mode = InflateBlockMode.CODES;
goto case InflateBlockMode.CODES;
case InflateBlockMode.CODES:
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
r = codes.Process(this, r);
if (r != ZlibConstants.Z_STREAM_END)
{
return(Flush(r));
}
r = ZlibConstants.Z_OK;
p = _codec.NextIn;
n = _codec.AvailableBytesIn;
b = bitb;
k = bitk;
q = writeAt;
m = (int)(q < readAt ? readAt - q - 1 : end - q);
if (last == 0)
{
mode = InflateBlockMode.TYPE;
break;
}
mode = InflateBlockMode.DRY;
goto case InflateBlockMode.DRY;
case InflateBlockMode.DRY:
writeAt = q;
r = Flush(r);
q = writeAt; m = (int)(q < readAt ? readAt - q - 1 : end - q);
if (readAt != writeAt)
{
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
mode = InflateBlockMode.DONE;
goto case InflateBlockMode.DONE;
case InflateBlockMode.DONE:
r = ZlibConstants.Z_STREAM_END;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
case InflateBlockMode.BAD:
r = ZlibConstants.Z_DATA_ERROR;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
default:
r = ZlibConstants.Z_STREAM_ERROR;
bitb = b; bitk = k;
_codec.AvailableBytesIn = n;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
}
}
internal int Process(int r)
{
int num = this._codec.NextIn;
int num2 = this._codec.AvailableBytesIn;
int num3 = this.bitb;
int i = this.bitk;
int num4 = this.writeAt;
int num5 = (num4 >= this.readAt) ? (this.end - num4) : (this.readAt - num4 - 1);
int num6;
for (;;)
{
switch (this.mode)
{
case InflateBlocks.InflateBlockMode.TYPE:
while (i < 3)
{
if (num2 == 0)
{
goto IL_AD;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num6 = (num3 & 7);
this.last = (num6 & 1);
switch ((uint)num6 >> 1)
{
case 0u:
num3 >>= 3;
i -= 3;
num6 = (i & 7);
num3 >>= num6;
i -= num6;
this.mode = InflateBlocks.InflateBlockMode.LENS;
break;
case 1u:
{
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, this._codec);
this.codes.Init(array[0], array2[0], array3[0], 0, array4[0], 0);
num3 >>= 3;
i -= 3;
this.mode = InflateBlocks.InflateBlockMode.CODES;
break;
}
case 2u:
num3 >>= 3;
i -= 3;
this.mode = InflateBlocks.InflateBlockMode.TABLE;
break;
case 3u:
goto IL_206;
}
continue;
case InflateBlocks.InflateBlockMode.LENS:
while (i < 32)
{
if (num2 == 0)
{
goto IL_2A3;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
if ((~num3 >> 16 & 65535) != (num3 & 65535))
{
goto Block_8;
}
this.left = (num3 & 65535);
i = (num3 = 0);
this.mode = ((this.left == 0) ? ((this.last == 0) ? InflateBlocks.InflateBlockMode.TYPE : InflateBlocks.InflateBlockMode.DRY) : InflateBlocks.InflateBlockMode.STORED);
continue;
case InflateBlocks.InflateBlockMode.STORED:
if (num2 == 0)
{
goto Block_11;
}
if (num5 == 0)
{
if (num4 == this.end && this.readAt != 0)
{
num4 = 0;
num5 = ((num4 >= this.readAt) ? (this.end - num4) : (this.readAt - num4 - 1));
}
if (num5 == 0)
{
this.writeAt = num4;
r = this.Flush(r);
num4 = this.writeAt;
num5 = ((num4 >= this.readAt) ? (this.end - num4) : (this.readAt - num4 - 1));
if (num4 == this.end && this.readAt != 0)
{
num4 = 0;
num5 = ((num4 >= this.readAt) ? (this.end - num4) : (this.readAt - num4 - 1));
}
if (num5 == 0)
{
goto Block_21;
}
}
}
r = 0;
num6 = this.left;
if (num6 > num2)
{
num6 = num2;
}
if (num6 > num5)
{
num6 = num5;
}
Array.Copy(this._codec.InputBuffer, num, this.window, num4, num6);
num += num6;
num2 -= num6;
num4 += num6;
num5 -= num6;
if ((this.left -= num6) != 0)
{
continue;
}
this.mode = ((this.last == 0) ? InflateBlocks.InflateBlockMode.TYPE : InflateBlocks.InflateBlockMode.DRY);
continue;
case InflateBlocks.InflateBlockMode.TABLE:
while (i < 14)
{
if (num2 == 0)
{
goto IL_64B;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num6 = (this.table = (num3 & 16383));
if ((num6 & 31) > 29 || (num6 >> 5 & 31) > 29)
{
goto IL_702;
}
num6 = 258 + (num6 & 31) + (num6 >> 5 & 31);
if (this.blens == null || this.blens.Length < num6)
{
this.blens = new int[num6];
}
else
{
Array.Clear(this.blens, 0, num6);
}
num3 >>= 14;
i -= 14;
this.index = 0;
this.mode = InflateBlocks.InflateBlockMode.BTREE;
goto IL_7E6;
case InflateBlocks.InflateBlockMode.BTREE:
goto IL_7E6;
case InflateBlocks.InflateBlockMode.DTREE:
goto IL_9CF;
case InflateBlocks.InflateBlockMode.CODES:
goto IL_E42;
case InflateBlocks.InflateBlockMode.DRY:
goto IL_F34;
case InflateBlocks.InflateBlockMode.DONE:
goto IL_FF0;
case InflateBlocks.InflateBlockMode.BAD:
goto IL_1050;
}
break;
for (;;)
{
IL_9CF:
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_A1A;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num6 = this.hufts[(this.tb[0] + (num3 & InternalInflateConstants.InflateMask[num6])) * 3 + 1];
int num7 = this.hufts[(this.tb[0] + (num3 & InternalInflateConstants.InflateMask[num6])) * 3 + 2];
if (num7 < 16)
{
num3 >>= num6;
i -= num6;
this.blens[this.index++] = num7;
}
else
{
int num8 = (num7 != 18) ? (num7 - 14) : 7;
int num9 = (num7 != 18) ? 3 : 11;
while (i < num6 + num8)
{
if (num2 == 0)
{
goto IL_B5E;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num3 >>= num6;
i -= num6;
num9 += (num3 & InternalInflateConstants.InflateMask[num8]);
num3 >>= num8;
i -= num8;
num8 = this.index;
num6 = this.table;
if (num8 + num9 > 258 + (num6 & 31) + (num6 >> 5 & 31) || (num7 == 16 && num8 < 1))
{
goto IL_C52;
}
num7 = ((num7 != 16) ? 0 : this.blens[num8 - 1]);
do
{
this.blens[num8++] = num7;
}while (--num9 != 0);
this.index = num8;
}
}
this.tb[0] = -1;
int[] array5 = new int[]
{
9
};
int[] array6 = new int[]
{
6
};
int[] array7 = new int[1];
int[] array8 = new int[1];
num6 = this.table;
num6 = this.inftree.inflate_trees_dynamic(257 + (num6 & 31), 1 + (num6 >> 5 & 31), this.blens, array5, array6, array7, array8, this.hufts, this._codec);
if (num6 != 0)
{
goto Block_48;
}
this.codes.Init(array5[0], array6[0], this.hufts, array7[0], this.hufts, array8[0]);
this.mode = InflateBlocks.InflateBlockMode.CODES;
goto IL_E42;
continue;
IL_E42:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
r = this.codes.Process(this, r);
if (r != 1)
{
goto Block_50;
}
r = 0;
num = this._codec.NextIn;
num2 = this._codec.AvailableBytesIn;
num3 = this.bitb;
i = this.bitk;
num4 = this.writeAt;
num5 = ((num4 >= this.readAt) ? (this.end - num4) : (this.readAt - num4 - 1));
if (this.last == 0)
{
this.mode = InflateBlocks.InflateBlockMode.TYPE;
continue;
}
goto IL_F28;
IL_7E6:
while (this.index < 4 + (this.table >> 10))
{
while (i < 3)
{
if (num2 == 0)
{
goto IL_803;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
this.blens[InflateBlocks.border[this.index++]] = (num3 & 7);
num3 >>= 3;
i -= 3;
}
while (this.index < 19)
{
this.blens[InflateBlocks.border[this.index++]] = 0;
}
this.bb[0] = 7;
num6 = this.inftree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, this._codec);
if (num6 != 0)
{
goto Block_34;
}
this.index = 0;
this.mode = InflateBlocks.InflateBlockMode.DTREE;
goto IL_9CF;
}
r = -2;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_AD:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_206:
num3 >>= 3;
i -= 3;
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid block type";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_2A3:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
Block_8:
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid stored block lengths";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
Block_11:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
Block_21:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_64B:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_702:
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "too many length or distance symbols";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_803:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
Block_34:
r = num6;
if (r == -3)
{
this.blens = null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
}
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_A1A:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_B5E:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_C52:
this.blens = null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid bit length repeat";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
Block_48:
if (num6 == -3)
{
this.blens = null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
}
r = num6;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
Block_50:
return(this.Flush(r));
IL_F28:
this.mode = InflateBlocks.InflateBlockMode.DRY;
IL_F34:
this.writeAt = num4;
r = this.Flush(r);
num4 = this.writeAt;
int num10 = (num4 >= this.readAt) ? (this.end - num4) : (this.readAt - num4 - 1);
if (this.readAt != this.writeAt)
{
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
}
this.mode = InflateBlocks.InflateBlockMode.DONE;
IL_FF0:
r = 1;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_1050:
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
}
internal int Process(int r)
{
int num = _codec.NextIn;
int num2 = _codec.AvailableBytesIn;
int num3 = bitb;
int i = bitk;
int num4 = writeAt;
int num5 = (num4 >= readAt) ? (end - num4) : (readAt - num4 - 1);
while (true)
{
switch (mode)
{
case InflateBlockMode.TYPE:
{
for (; i < 3; i += 8)
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
r = 0;
num2--;
num3 |= (_codec.InputBuffer[num++] & 0xFF) << i;
}
int num7 = num3 & 7;
last = (num7 & 1);
switch ((uint)num7 >> 1)
{
case 0u:
num3 >>= 3;
i -= 3;
num7 = (i & 7);
num3 >>= num7;
i -= num7;
mode = InflateBlockMode.LENS;
break;
case 1u:
{
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, _codec);
codes.Init(array[0], array2[0], array3[0], 0, array4[0], 0);
num3 >>= 3;
i -= 3;
mode = InflateBlockMode.CODES;
break;
}
case 2u:
num3 >>= 3;
i -= 3;
mode = InflateBlockMode.TABLE;
break;
case 3u:
num3 >>= 3;
i -= 3;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid block type";
r = -3;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
break;
}
case InflateBlockMode.LENS:
for (; i < 32; i += 8)
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
r = 0;
num2--;
num3 |= (_codec.InputBuffer[num++] & 0xFF) << i;
}
if (((~num3 >> 16) & 0xFFFF) != (num3 & 0xFFFF))
{
mode = InflateBlockMode.BAD;
_codec.Message = "invalid stored block lengths";
r = -3;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
left = (num3 & 0xFFFF);
num3 = (i = 0);
mode = ((left != 0) ? InflateBlockMode.STORED : ((last != 0) ? InflateBlockMode.DRY : InflateBlockMode.TYPE));
break;
case InflateBlockMode.STORED:
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
if (num5 == 0)
{
if (num4 == end && readAt != 0)
{
num4 = 0;
num5 = ((num4 >= readAt) ? (end - num4) : (readAt - num4 - 1));
}
if (num5 == 0)
{
writeAt = num4;
r = Flush(r);
num4 = writeAt;
num5 = ((num4 >= readAt) ? (end - num4) : (readAt - num4 - 1));
if (num4 == end && readAt != 0)
{
num4 = 0;
num5 = ((num4 >= readAt) ? (end - num4) : (readAt - num4 - 1));
}
if (num5 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
}
}
r = 0;
int num7 = left;
if (num7 > num2)
{
num7 = num2;
}
if (num7 > num5)
{
num7 = num5;
}
Array.Copy(_codec.InputBuffer, num, window, num4, num7);
num += num7;
num2 -= num7;
num4 += num7;
num5 -= num7;
if ((left -= num7) == 0)
{
mode = ((last != 0) ? InflateBlockMode.DRY : InflateBlockMode.TYPE);
}
break;
}
case InflateBlockMode.TABLE:
{
for (; i < 14; i += 8)
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
r = 0;
num2--;
num3 |= (_codec.InputBuffer[num++] & 0xFF) << i;
}
int num7 = table = (num3 & 0x3FFF);
if ((num7 & 0x1F) > 29 || ((num7 >> 5) & 0x1F) > 29)
{
mode = InflateBlockMode.BAD;
_codec.Message = "too many length or distance symbols";
r = -3;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
num7 = 258 + (num7 & 0x1F) + ((num7 >> 5) & 0x1F);
if (blens == null || blens.Length < num7)
{
blens = new int[num7];
}
else
{
Array.Clear(blens, 0, num7);
}
num3 >>= 14;
i -= 14;
index = 0;
mode = InflateBlockMode.BTREE;
goto case InflateBlockMode.BTREE;
}
case InflateBlockMode.BTREE:
{
while (index < 4 + (table >> 10))
{
for (; i < 3; i += 8)
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
r = 0;
num2--;
num3 |= (_codec.InputBuffer[num++] & 0xFF) << i;
}
blens[border[index++]] = (num3 & 7);
num3 >>= 3;
i -= 3;
}
while (index < 19)
{
blens[border[index++]] = 0;
}
bb[0] = 7;
int num7 = inftree.inflate_trees_bits(blens, bb, tb, hufts, _codec);
if (num7 != 0)
{
r = num7;
if (r == -3)
{
blens = null;
mode = InflateBlockMode.BAD;
}
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
index = 0;
mode = InflateBlockMode.DTREE;
goto case InflateBlockMode.DTREE;
}
case InflateBlockMode.DTREE:
{
int num7;
while (true)
{
num7 = table;
if (index >= 258 + (num7 & 0x1F) + ((num7 >> 5) & 0x1F))
{
break;
}
for (num7 = bb[0]; i < num7; i += 8)
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
r = 0;
num2--;
num3 |= (_codec.InputBuffer[num++] & 0xFF) << i;
}
num7 = hufts[(tb[0] + (num3 & InternalInflateConstants.InflateMask[num7])) * 3 + 1];
int num11 = hufts[(tb[0] + (num3 & InternalInflateConstants.InflateMask[num7])) * 3 + 2];
if (num11 < 16)
{
num3 >>= num7;
i -= num7;
blens[index++] = num11;
}
else
{
int num12 = (num11 != 18) ? (num11 - 14) : 7;
int num13 = (num11 != 18) ? 3 : 11;
for (; i < num7 + num12; i += 8)
{
if (num2 == 0)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
r = 0;
num2--;
num3 |= (_codec.InputBuffer[num++] & 0xFF) << i;
}
num3 >>= num7;
i -= num7;
num13 += (num3 & InternalInflateConstants.InflateMask[num12]);
num3 >>= num12;
i -= num12;
num12 = index;
num7 = table;
if (num12 + num13 > 258 + (num7 & 0x1F) + ((num7 >> 5) & 0x1F) || (num11 == 16 && num12 < 1))
{
blens = null;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid bit length repeat";
r = -3;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
num11 = ((num11 == 16) ? blens[num12 - 1] : 0);
do
{
blens[num12++] = num11;
}while (--num13 != 0);
index = num12;
}
}
tb[0] = -1;
int[] array5 = new int[1]
{
9
};
int[] array6 = new int[1]
{
6
};
int[] array7 = new int[1];
int[] array8 = new int[1];
num7 = table;
num7 = inftree.inflate_trees_dynamic(257 + (num7 & 0x1F), 1 + ((num7 >> 5) & 0x1F), blens, array5, array6, array7, array8, hufts, _codec);
switch (num7)
{
case -3:
blens = null;
mode = InflateBlockMode.BAD;
goto default;
default:
r = num7;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
case 0:
break;
}
codes.Init(array5[0], array6[0], hufts, array7[0], hufts, array8[0]);
mode = InflateBlockMode.CODES;
goto case InflateBlockMode.CODES;
}
case InflateBlockMode.CODES:
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
r = codes.Process(this, r);
if (r != 1)
{
return(Flush(r));
}
r = 0;
num = _codec.NextIn;
num2 = _codec.AvailableBytesIn;
num3 = bitb;
i = bitk;
num4 = writeAt;
num5 = ((num4 >= readAt) ? (end - num4) : (readAt - num4 - 1));
if (last == 0)
{
mode = InflateBlockMode.TYPE;
break;
}
mode = InflateBlockMode.DRY;
goto case InflateBlockMode.DRY;
case InflateBlockMode.DRY:
writeAt = num4;
r = Flush(r);
num4 = writeAt;
num5 = ((num4 >= readAt) ? (end - num4) : (readAt - num4 - 1));
if (readAt != writeAt)
{
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
mode = InflateBlockMode.DONE;
goto case InflateBlockMode.DONE;
case InflateBlockMode.DONE:
r = 1;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
case InflateBlockMode.BAD:
r = -3;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
default:
r = -2;
bitb = num3;
bitk = i;
_codec.AvailableBytesIn = num2;
_codec.TotalBytesIn += num - _codec.NextIn;
_codec.NextIn = num;
writeAt = num4;
return(Flush(r));
}
}
}
// Token: 0x06000792 RID: 1938 RVA: 0x00041C24 File Offset: 0x0003FE24
internal int Process(int r)
{
int num = this._codec.NextIn;
int num2 = this._codec.AvailableBytesIn;
int num3 = this.bitb;
int i = this.bitk;
int num4 = this.writeAt;
int num5 = (num4 < this.readAt) ? (this.readAt - num4 - 1) : (this.end - num4);
int num6;
for (;;)
{
switch (this.mode)
{
case InflateBlocks.InflateBlockMode.TYPE:
while (i < 3)
{
if (num2 == 0)
{
goto IL_928;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num6 = (num3 & 7);
this.last = (num6 & 1);
switch ((uint)num6 >> 1)
{
case 0U:
num3 >>= 3;
i -= 3;
num6 = (i & 7);
num3 >>= num6;
i -= num6;
this.mode = InflateBlocks.InflateBlockMode.LENS;
continue;
case 1U:
{
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, this._codec);
this.codes.Init(array[0], array2[0], array3[0], 0, array4[0], 0);
num3 >>= 3;
i -= 3;
this.mode = InflateBlocks.InflateBlockMode.CODES;
continue;
}
case 2U:
num3 >>= 3;
i -= 3;
this.mode = InflateBlocks.InflateBlockMode.TABLE;
continue;
case 3U:
goto IL_8AD;
default:
continue;
}
break;
case InflateBlocks.InflateBlockMode.LENS:
{
while (i < 32)
{
if (num2 == 0)
{
goto IL_9F1;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
if ((~num3 >> 16 & 65535) != (num3 & 65535))
{
goto Block_45;
}
this.left = (num3 & 65535);
int num7 = 0;
i = 0;
num3 = num7;
this.mode = ((this.left != 0) ? InflateBlocks.InflateBlockMode.STORED : ((this.last != 0) ? InflateBlocks.InflateBlockMode.DRY : InflateBlocks.InflateBlockMode.TYPE));
continue;
}
case InflateBlocks.InflateBlockMode.STORED:
if (num2 == 0)
{
goto IL_A47;
}
if (num5 == 0)
{
if (num4 == this.end && this.readAt != 0)
{
num4 = 0;
num5 = ((0 < this.readAt) ? (this.readAt - num4 - 1) : (this.end - num4));
}
if (num5 == 0)
{
this.writeAt = num4;
r = this.Flush(r);
num4 = this.writeAt;
num5 = ((num4 < this.readAt) ? (this.readAt - num4 - 1) : (this.end - num4));
if (num4 == this.end && this.readAt != 0)
{
num4 = 0;
num5 = ((0 < this.readAt) ? (this.readAt - num4 - 1) : (this.end - num4));
}
if (num5 == 0)
{
goto IL_A9D;
}
}
}
r = 0;
num6 = this.left;
if (num6 > num2)
{
num6 = num2;
}
if (num6 > num5)
{
num6 = num5;
}
Array.Copy(this._codec.InputBuffer, num, this.window, num4, num6);
num += num6;
num2 -= num6;
num4 += num6;
num5 -= num6;
if ((this.left -= num6) == 0)
{
this.mode = ((this.last != 0) ? InflateBlocks.InflateBlockMode.DRY : InflateBlocks.InflateBlockMode.TYPE);
continue;
}
continue;
case InflateBlocks.InflateBlockMode.TABLE:
while (i < 14)
{
if (num2 == 0)
{
goto IL_B66;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num6 = (this.table = (num3 & 16383));
if ((num6 & 31) <= 29 && (num6 >> 5 & 31) <= 29)
{
num6 = 258 + (num6 & 31) + (num6 >> 5 & 31);
if (this.blens != null && this.blens.Length >= num6)
{
Array.Clear(this.blens, 0, num6);
}
else
{
this.blens = new int[num6];
}
num3 >>= 14;
i -= 14;
this.index = 0;
this.mode = InflateBlocks.InflateBlockMode.BTREE;
goto IL_40A;
}
goto IL_AF3;
case InflateBlocks.InflateBlockMode.BTREE:
goto IL_40A;
case InflateBlocks.InflateBlockMode.DTREE:
goto IL_2CC;
case InflateBlocks.InflateBlockMode.CODES:
goto IL_55;
case InflateBlocks.InflateBlockMode.DRY:
goto IL_E24;
case InflateBlocks.InflateBlockMode.DONE:
goto IL_ECA;
case InflateBlocks.InflateBlockMode.BAD:
goto IL_F23;
}
goto Block_51;
for (;;)
{
IL_2CC:
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_D50;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num6 = this.hufts[(this.tb[0] + (num3 & InternalInflateConstants.InflateMask[num6])) * 3 + 1];
int num8 = this.hufts[(this.tb[0] + (num3 & InternalInflateConstants.InflateMask[num6])) * 3 + 2];
if (num8 < 16)
{
num3 >>= num6;
i -= num6;
this.blens[this.index++] = num8;
}
else
{
int num9 = (num8 == 18) ? 7 : (num8 - 14);
int num10 = (num8 == 18) ? 11 : 3;
while (i < num6 + num9)
{
if (num2 == 0)
{
goto IL_CFA;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
num3 >>= num6;
i -= num6;
num10 += (num3 & InternalInflateConstants.InflateMask[num9]);
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_C80;
}
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[]
{
9
};
int[] array6 = new int[]
{
6
};
int[] array7 = new int[1];
int[] array8 = new int[1];
num6 = this.table;
num6 = this.inftree.inflate_trees_dynamic(257 + (num6 & 31), 1 + (num6 >> 5 & 31), this.blens, array5, array6, array7, array8, this.hufts, this._codec);
if (num6 == 0)
{
this.codes.Init(array5[0], array6[0], this.hufts, array7[0], this.hufts, array8[0]);
this.mode = InflateBlocks.InflateBlockMode.CODES;
goto IL_55;
}
goto IL_DA6;
IL_40A:
while (this.index < 4 + (this.table >> 10))
{
while (i < 3)
{
if (num2 == 0)
{
goto IL_C2A;
}
r = 0;
num2--;
num3 |= (int)(this._codec.InputBuffer[num++] & byte.MaxValue) << i;
i += 8;
}
this.blens[InflateBlocks.border[this.index++]] = (num3 & 7);
num3 >>= 3;
i -= 3;
}
while (this.index < 19)
{
this.blens[InflateBlocks.border[this.index++]] = 0;
}
this.bb[0] = 7;
num6 = this.inftree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, this._codec);
if (num6 == 0)
{
this.index = 0;
this.mode = InflateBlocks.InflateBlockMode.DTREE;
goto IL_2CC;
}
goto IL_BBC;
IL_55:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
r = this.codes.Process(this, r);
if (r != 1)
{
break;
}
r = 0;
num = this._codec.NextIn;
num2 = this._codec.AvailableBytesIn;
num3 = this.bitb;
i = this.bitk;
num4 = this.writeAt;
num5 = ((num4 < this.readAt) ? (this.readAt - num4 - 1) : (this.end - num4));
if (this.last != 0)
{
goto IL_E1D;
}
this.mode = InflateBlocks.InflateBlockMode.TYPE;
}
return(this.Flush(r));
Block_45:
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid stored block lengths";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(-3));
Block_51:
r = -2;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(-2));
IL_8AD:
num3 >>= 3;
i -= 3;
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid block type";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(-3));
IL_928:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_9F1:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_A47:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_A9D:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_AF3:
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "too many length or distance symbols";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(-3));
IL_B66:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_BBC:
r = num6;
if (r == -3)
{
this.blens = null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
}
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_C2A:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_C80:
this.blens = null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid bit length repeat";
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(-3));
IL_CFA:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_D50:
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_DA6:
if (num6 == -3)
{
this.blens = null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
}
r = num6;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
IL_E1D:
this.mode = InflateBlocks.InflateBlockMode.DRY;
IL_E24:
this.writeAt = num4;
r = this.Flush(r);
num4 = this.writeAt;
int num11 = (num4 < this.readAt) ? (this.readAt - num4 - 1) : (this.end - num4);
if (this.readAt != this.writeAt)
{
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(r));
}
this.mode = InflateBlocks.InflateBlockMode.DONE;
IL_ECA:
r = 1;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(1));
IL_F23:
r = -3;
this.bitb = num3;
this.bitk = i;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += (long)(num - this._codec.NextIn);
this._codec.NextIn = num;
this.writeAt = num4;
return(this.Flush(-3));
}
internal int Process(int r)
{
int t; // temporary storage
int nextIn = _NextIn; // input data pointer
int availIn = _AvailIn; // bytes available there
int bits = bitb; // bit buffer
int bitsNum = bitk; // bits in bit buffer
int q = writeAt; // output window write pointer
int m = q < readAt ? readAt - q - 1 : end - q; // bytes to end of window or read pointer
// process input based on current state
while (true)
{
switch (mode)
{
case InflateBlockMode.TYPE:
while (bitsNum < 3)
{
if (availIn != 0)
{
r = RCode.Okay;
}
else
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
availIn--;
bits |= InputBuffer[nextIn++] << bitsNum;
bitsNum += 8;
}
last = bits & 0x1;
switch ((bits & 0x7) >> 1)
{
case 0: // stored
bits >>= 3; bitsNum -= 3;
t = bitsNum & 7; // go to byte boundary
bits >>= t; bitsNum -= t;
mode = InflateBlockMode.LENS; // get length of stored block
break;
case 1: // fixed
int bl, bd;
int[] tl, td;
InfTree.InflateTreesFixed(out bl, out bd, out tl, out td);
codes.Init(bl, bd, tl, 0, td, 0);
bits >>= 3; bitsNum -= 3;
mode = InflateBlockMode.CODES;
break;
case 2: // dynamic
bits >>= 3; bitsNum -= 3;
mode = InflateBlockMode.TABLE;
break;
case 3: // illegal
throw new InvalidDataException("invalid block type");
}
break;
case InflateBlockMode.LENS:
while (bitsNum < 32)
{
if (availIn != 0)
{
r = RCode.Okay;
}
else
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
availIn--;
bits |= InputBuffer[nextIn++] << bitsNum;
bitsNum += 8;
}
if (((~bits >> 16) & 0xffff) != (bits & 0xffff))
{
throw new InvalidDataException("invalid stored block lengths");
}
left = bits & 0xffff;
bits = bitsNum = 0; // dump bits
mode = left != 0 ? InflateBlockMode.STORED : (last != 0 ? InflateBlockMode.DRY : InflateBlockMode.TYPE);
break;
case InflateBlockMode.STORED:
if (availIn == 0)
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
if (m == 0)
{
if (q == end && readAt != 0)
{
q = 0;
m = q < readAt ? readAt - q - 1 : end - q;
}
if (m == 0)
{
writeAt = q;
r = Flush(r);
q = writeAt;
m = q < readAt ? readAt - q - 1 : end - q;
if (q == end && readAt != 0)
{
q = 0;
m = q < readAt ? readAt - q - 1 : end - q;
}
if (m == 0)
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
}
}
r = RCode.Okay;
t = left;
if (t > availIn)
{
t = availIn;
}
if (t > m)
{
t = m;
}
Array.Copy(InputBuffer, nextIn, window, q, t);
nextIn += t; availIn -= t;
q += t; m -= t;
if ((left -= t) != 0)
{
break;
}
mode = last != 0 ? InflateBlockMode.DRY : InflateBlockMode.TYPE;
break;
case InflateBlockMode.TABLE:
while (bitsNum < 14)
{
if (availIn != 0)
{
r = RCode.Okay;
}
else
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
availIn--;
bits |= InputBuffer[nextIn++] << bitsNum;
bitsNum += 8;
}
table = t = (bits & 0x3fff);
if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
{
throw new InvalidDataException("too many length or distance symbols");
}
t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
if (blens == null || blens.Length < t)
{
blens = new int[t];
}
else
{
Array.Clear(blens, 0, t);
}
bits >>= 14;
bitsNum -= 14;
index = 0;
mode = InflateBlockMode.BTREE;
goto case InflateBlockMode.BTREE;
case InflateBlockMode.BTREE:
while (index < 4 + (table >> 10))
{
while (bitsNum < 3)
{
if (availIn != 0)
{
r = RCode.Okay;
}
else
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
availIn--;
bits |= InputBuffer[nextIn++] << bitsNum;
bitsNum += 8;
}
blens[border[index++]] = bits & 7;
bits >>= 3; bitsNum -= 3;
}
while (index < 19)
{
blens[border[index++]] = 0;
}
bb = 7;
inftree.InflateTreeBits(blens, ref bb, ref tb, hufts);
index = 0;
mode = InflateBlockMode.DTREE;
goto case InflateBlockMode.DTREE;
case InflateBlockMode.DTREE:
while (true)
{
t = table;
if (!(index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f)))
{
break;
}
t = bb;
while (bitsNum < t)
{
if (availIn != 0)
{
r = RCode.Okay;
}
else
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
availIn--;
bits |= InputBuffer[nextIn++] << bitsNum;
bitsNum += 8;
}
t = hufts[(tb + (bits & Constants.InflateMask[t])) * 3 + 1];
int c = hufts[(tb + (bits & Constants.InflateMask[t])) * 3 + 2];
if (c < 16)
{
bits >>= t; bitsNum -= t;
blens[index++] = c;
}
else
{
// c == 16..18
int i = c == 18 ? 7 : c - 14;
int j = c == 18 ? 11 : 3;
while (bitsNum < (t + i))
{
if (availIn != 0)
{
r = RCode.Okay;
}
else
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
availIn--;
bits |= InputBuffer[nextIn++] << bitsNum;
bitsNum += 8;
}
bits >>= t; bitsNum -= t;
j += (bits & Constants.InflateMask[i]);
bits >>= i; bitsNum -= i;
i = index;
if (i + j > 258 + (table & 0x1f) + ((table >> 5) & 0x1f) || (c == 16 && i < 1))
{
throw new InvalidDataException("invalid bit length repeat");
}
c = (c == 16) ? blens[i - 1] : 0;
do
{
blens[i++] = c;
} while (--j != 0);
index = i;
}
}
tb = -1;
{
int bl = 9; // must be <= 9 for lookahead assumptions
int bd = 6; // must be <= 9 for lookahead assumptions
int tl = 0;
int td = 0;
inftree.InflateTreesDynamic(257 + (table & 0x1f), 1 + ((table >> 5) & 0x1f), blens,
ref bl, ref bd, ref tl, ref td, hufts);
codes.Init(bl, bd, hufts, tl, hufts, td);
}
mode = InflateBlockMode.CODES;
goto case InflateBlockMode.CODES;
case InflateBlockMode.CODES:
UpdateState(bits, bitsNum, availIn, nextIn, q);
r = codes.Process(this, r);
if (r != RCode.StreamEnd)
{
return(Flush(r));
}
r = RCode.Okay;
nextIn = _NextIn;
availIn = _AvailIn;
bits = bitb;
bitsNum = bitk;
q = writeAt;
m = q < readAt ? readAt - q - 1 : end - q;
if (last == 0)
{
mode = InflateBlockMode.TYPE;
break;
}
mode = InflateBlockMode.DRY;
goto case InflateBlockMode.DRY;
case InflateBlockMode.DRY:
writeAt = q;
r = Flush(r);
q = writeAt;
m = q < readAt ? readAt - q - 1 : end - q;
if (readAt != writeAt)
{
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, r));
}
mode = InflateBlockMode.DONE;
goto case InflateBlockMode.DONE;
case InflateBlockMode.DONE:
return(RanOutOfInput(bits, bitsNum, availIn, nextIn, q, RCode.StreamEnd));
default:
throw new InvalidOperationException("Invalid inflate block mode: " + mode);
}
}
}
internal int Process(int r)
{
int sourceIndex = this._codec.NextIn;
int num1 = this._codec.AvailableBytesIn;
int num2 = this.bitb;
int num3 = this.bitk;
int destinationIndex = this.writeAt;
int num4 = destinationIndex < this.readAt ? this.readAt - destinationIndex - 1 : this.end - destinationIndex;
int num5;
int num6;
while (true)
{
bool flag = true;
switch (this.mode)
{
case InflateBlocks.InflateBlockMode.TYPE:
while (num3 < 3)
{
if (num1 != 0)
{
r = 0;
--num1;
num2 |= ((int)this._codec.InputBuffer[sourceIndex++] & (int)byte.MaxValue) << num3;
num3 += 8;
}
else
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
}
int num7 = num2 & 7;
this.last = num7 & 1;
switch ((uint)num7 >> 1)
{
case 0:
int num8 = num2 >> 3;
int num9 = num3 - 3;
int num10 = num9 & 7;
num2 = num8 >> num10;
num3 = num9 - num10;
this.mode = InflateBlocks.InflateBlockMode.LENS;
break;
case 1:
int[] bl1 = new int[1];
int[] bd1 = new int[1];
int[][] tl1 = new int[1][];
int[][] td1 = new int[1][];
InfTree.inflate_trees_fixed(bl1, bd1, tl1, td1, this._codec);
this.codes.Init(bl1[0], bd1[0], tl1[0], 0, td1[0], 0);
num2 >>= 3;
num3 -= 3;
this.mode = InflateBlocks.InflateBlockMode.CODES;
break;
case 2:
num2 >>= 3;
num3 -= 3;
this.mode = InflateBlocks.InflateBlockMode.TABLE;
break;
case 3:
goto label_9;
}
break;
case InflateBlocks.InflateBlockMode.LENS:
while (num3 < 32)
{
if (num1 != 0)
{
r = 0;
--num1;
num2 |= ((int)this._codec.InputBuffer[sourceIndex++] & (int)byte.MaxValue) << num3;
num3 += 8;
}
else
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
}
if ((~num2 >> 16 & (int)ushort.MaxValue) == (num2 & (int)ushort.MaxValue))
{
this.left = num2 & (int)ushort.MaxValue;
num2 = num3 = 0;
this.mode = this.left != 0 ? InflateBlocks.InflateBlockMode.STORED : (this.last != 0 ? InflateBlocks.InflateBlockMode.DRY : InflateBlocks.InflateBlockMode.TYPE);
break;
}
goto label_15;
case InflateBlocks.InflateBlockMode.STORED:
if (num1 != 0)
{
if (num4 == 0)
{
if (destinationIndex == this.end && this.readAt != 0)
{
destinationIndex = 0;
num4 = destinationIndex < this.readAt ? this.readAt - destinationIndex - 1 : this.end - destinationIndex;
}
if (num4 == 0)
{
this.writeAt = destinationIndex;
r = this.Flush(r);
destinationIndex = this.writeAt;
num4 = destinationIndex < this.readAt ? this.readAt - destinationIndex - 1 : this.end - destinationIndex;
if (destinationIndex == this.end && this.readAt != 0)
{
destinationIndex = 0;
num4 = destinationIndex < this.readAt ? this.readAt - destinationIndex - 1 : this.end - destinationIndex;
}
if (num4 == 0)
{
goto label_26;
}
}
}
r = 0;
int length = this.left;
if (length > num1)
{
length = num1;
}
if (length > num4)
{
length = num4;
}
Array.Copy((Array)this._codec.InputBuffer, sourceIndex, (Array)this.window, destinationIndex, length);
sourceIndex += length;
num1 -= length;
destinationIndex += length;
num4 -= length;
if ((this.left -= length) == 0)
{
this.mode = this.last != 0 ? InflateBlocks.InflateBlockMode.DRY : InflateBlocks.InflateBlockMode.TYPE;
break;
}
break;
}
goto label_18;
case InflateBlocks.InflateBlockMode.TABLE:
while (num3 < 14)
{
if (num1 != 0)
{
r = 0;
--num1;
num2 |= ((int)this._codec.InputBuffer[sourceIndex++] & (int)byte.MaxValue) << num3;
num3 += 8;
}
else
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
}
int num11;
this.table = num11 = num2 & 16383;
if ((num11 & 31) <= 29 && (num11 >> 5 & 31) <= 29)
{
int length = 258 + (num11 & 31) + (num11 >> 5 & 31);
if (this.blens == null || this.blens.Length < length)
{
this.blens = new int[length];
}
else
{
Array.Clear((Array)this.blens, 0, length);
}
num2 >>= 14;
num3 -= 14;
this.index = 0;
this.mode = InflateBlocks.InflateBlockMode.BTREE;
goto case InflateBlocks.InflateBlockMode.BTREE;
}
else
{
goto label_39;
}
case InflateBlocks.InflateBlockMode.BTREE:
while (this.index < 4 + (this.table >> 10))
{
while (num3 < 3)
{
if (num1 != 0)
{
r = 0;
--num1;
num2 |= ((int)this._codec.InputBuffer[sourceIndex++] & (int)byte.MaxValue) << num3;
num3 += 8;
}
else
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
}
this.blens[InflateBlocks.border[this.index++]] = num2 & 7;
num2 >>= 3;
num3 -= 3;
}
while (this.index < 19)
{
this.blens[InflateBlocks.border[this.index++]] = 0;
}
this.bb[0] = 7;
num5 = this.inftree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, this._codec);
if (num5 == 0)
{
this.index = 0;
this.mode = InflateBlocks.InflateBlockMode.DTREE;
goto case InflateBlocks.InflateBlockMode.DTREE;
}
else
{
goto label_53;
}
case InflateBlocks.InflateBlockMode.DTREE:
while (true)
{
flag = true;
int num12 = this.table;
if (this.index < 258 + (num12 & 31) + (num12 >> 5 & 31))
{
int index1 = this.bb[0];
while (num3 < index1)
{
if (num1 != 0)
{
r = 0;
--num1;
num2 |= ((int)this._codec.InputBuffer[sourceIndex++] & (int)byte.MaxValue) << num3;
num3 += 8;
}
else
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
}
int index2 = this.hufts[(this.tb[0] + (num2 & InternalInflateConstants.InflateMask[index1])) * 3 + 1];
int num13 = this.hufts[(this.tb[0] + (num2 & InternalInflateConstants.InflateMask[index2])) * 3 + 2];
if (num13 < 16)
{
num2 >>= index2;
num3 -= index2;
this.blens[this.index++] = num13;
}
else
{
int index3 = num13 == 18 ? 7 : num13 - 14;
int num14 = num13 == 18 ? 11 : 3;
while (num3 < index2 + index3)
{
if (num1 != 0)
{
r = 0;
--num1;
num2 |= ((int)this._codec.InputBuffer[sourceIndex++] & (int)byte.MaxValue) << num3;
num3 += 8;
}
else
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
}
int num15 = num2 >> index2;
int num16 = num3 - index2;
int num17 = num14 + (num15 & InternalInflateConstants.InflateMask[index3]);
num2 = num15 >> index3;
num3 = num16 - index3;
int num18 = this.index;
int num19 = this.table;
if (num18 + num17 <= 258 + (num19 & 31) + (num19 >> 5 & 31) && (num13 != 16 || num18 >= 1))
{
int num20 = num13 == 16 ? this.blens[num18 - 1] : 0;
do
{
this.blens[num18++] = num20;
}while (--num17 != 0);
this.index = num18;
}
else
{
goto label_70;
}
}
}
else
{
break;
}
}
this.tb[0] = -1;
int[] bl2 = new int[1]
{
9
};
int[] bd2 = new int[1] {
6
};
int[] tl2 = new int[1];
int[] td2 = new int[1];
int num21 = this.table;
num6 = this.inftree.inflate_trees_dynamic(257 + (num21 & 31), 1 + (num21 >> 5 & 31), this.blens, bl2, bd2, tl2, td2, this.hufts, this._codec);
switch (num6)
{
case 0:
this.codes.Init(bl2[0], bd2[0], this.hufts, tl2[0], this.hufts, td2[0]);
this.mode = InflateBlocks.InflateBlockMode.CODES;
goto label_80;
case -3:
goto label_77;
default:
goto label_78;
}
case InflateBlocks.InflateBlockMode.CODES:
label_80:
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
r = this.codes.Process(this, r);
if (r == 1)
{
r = 0;
sourceIndex = this._codec.NextIn;
num1 = this._codec.AvailableBytesIn;
num2 = this.bitb;
num3 = this.bitk;
destinationIndex = this.writeAt;
num4 = destinationIndex < this.readAt ? this.readAt - destinationIndex - 1 : this.end - destinationIndex;
if (this.last == 0)
{
this.mode = InflateBlocks.InflateBlockMode.TYPE;
break;
}
goto label_84;
}
else
{
goto label_81;
}
case InflateBlocks.InflateBlockMode.DRY:
goto label_85;
case InflateBlocks.InflateBlockMode.DONE:
goto label_88;
case InflateBlocks.InflateBlockMode.BAD:
goto label_89;
default:
goto label_90;
}
}
label_9:
int num22 = num2 >> 3;
int num23 = num3 - 3;
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid block type";
r = -3;
this.bitb = num22;
this.bitk = num23;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_15:
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid stored block lengths";
r = -3;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_18:
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_26:
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_39:
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "too many length or distance symbols";
r = -3;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_53:
r = num5;
if (r == -3)
{
this.blens = (int[])null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
}
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_70:
this.blens = (int[])null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
this._codec.Message = "invalid bit length repeat";
r = -3;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_77:
this.blens = (int[])null;
this.mode = InflateBlocks.InflateBlockMode.BAD;
label_78:
r = num6;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_81:
return(this.Flush(r));
label_84:
this.mode = InflateBlocks.InflateBlockMode.DRY;
label_85:
this.writeAt = destinationIndex;
r = this.Flush(r);
destinationIndex = this.writeAt;
int num24 = destinationIndex < this.readAt ? this.readAt - destinationIndex - 1 : this.end - destinationIndex;
if (this.readAt != this.writeAt)
{
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
this.mode = InflateBlocks.InflateBlockMode.DONE;
label_88:
r = 1;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_89:
r = -3;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
label_90:
r = -2;
this.bitb = num2;
this.bitk = num3;
this._codec.AvailableBytesIn = num1;
this._codec.TotalBytesIn += (long)(sourceIndex - this._codec.NextIn);
this._codec.NextIn = sourceIndex;
this.writeAt = destinationIndex;
return(this.Flush(r));
}
internal int Process(int r)
{
int[] numArray;
int[] numArray2;
int num8;
bool flag;
int nextIn = this._codec.NextIn;
int availableBytesIn = this._codec.AvailableBytesIn;
int bitb = this.bitb;
int bitk = this.bitk;
int write = this.write;
int num7 = (write < this.read) ? ((this.read - write) - 1) : (this.end - write);
goto Label_11DA;
Label_0933:
while (this.index < (4 + SharedUtils.URShift(this.table, 10)))
{
while (bitk < 3)
{
if (availableBytesIn != 0)
{
r = 0;
}
else
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
availableBytesIn--;
bitb |= (this._codec.InputBuffer[nextIn++] & 0xff) << bitk;
bitk += 8;
}
this.blens[border[this.index++]] = bitb & 7;
bitb = SharedUtils.URShift(bitb, 3);
bitk -= 3;
}
while (this.index < 0x13)
{
this.blens[border[this.index++]] = 0;
}
this.bb[0] = 7;
int index = this.inftree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, this._codec);
if (index != 0)
{
r = index;
if (r == -3)
{
this.blens = null;
this.mode = 9;
}
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
this.index = 0;
this.mode = 5;
Label_0DD2:
flag = true;
index = this.table;
if (this.index >= ((0x102 + (index & 0x1f)) + ((index >> 5) & 0x1f)))
{
this.tb[0] = -1;
numArray = new int[] { 9 };
numArray2 = new int[] { 6 };
int[] tl = new int[1];
int[] td = new int[1];
index = this.table;
index = this.inftree.inflate_trees_dynamic(0x101 + (index & 0x1f), 1 + ((index >> 5) & 0x1f), this.blens, numArray, numArray2, tl, td, this.hufts, this._codec);
if (index != 0)
{
if (index == -3)
{
this.blens = null;
this.mode = 9;
}
r = index;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
this.codes.Init(numArray[0], numArray2[0], this.hufts, tl[0], this.hufts, td[0]);
this.mode = 6;
}
else
{
index = this.bb[0];
while (bitk < index)
{
if (availableBytesIn != 0)
{
r = 0;
}
else
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
availableBytesIn--;
bitb |= (this._codec.InputBuffer[nextIn++] & 0xff) << bitk;
bitk += 8;
}
if (this.tb[0] == -1)
{
}
index = this.hufts[((this.tb[0] + (bitb & inflate_mask[index])) * 3) + 1];
int num10 = this.hufts[((this.tb[0] + (bitb & inflate_mask[index])) * 3) + 2];
if (num10 < 0x10)
{
bitb = SharedUtils.URShift(bitb, index);
bitk -= index;
this.blens[this.index++] = num10;
}
else
{
num8 = (num10 == 0x12) ? 7 : (num10 - 14);
int num9 = (num10 == 0x12) ? 11 : 3;
while (bitk < (index + num8))
{
if (availableBytesIn != 0)
{
r = 0;
}
else
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
availableBytesIn--;
bitb |= (this._codec.InputBuffer[nextIn++] & 0xff) << bitk;
bitk += 8;
}
bitb = SharedUtils.URShift(bitb, index);
bitk -= index;
num9 += bitb & inflate_mask[num8];
bitb = SharedUtils.URShift(bitb, num8);
bitk -= num8;
num8 = this.index;
index = this.table;
if (((num8 + num9) > ((0x102 + (index & 0x1f)) + ((index >> 5) & 0x1f))) || ((num10 == 0x10) && (num8 < 1)))
{
this.blens = null;
this.mode = 9;
this._codec.Message = "invalid bit length repeat";
r = -3;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
num10 = (num10 == 0x10) ? this.blens[num8 - 1] : 0;
do
{
this.blens[num8++] = num10;
}while (--num9 != 0);
this.index = num8;
}
goto Label_0DD2;
}
Label_0F15:
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
if ((r = this.codes.Process(this, r)) != 1)
{
return(this.Flush(r));
}
r = 0;
nextIn = this._codec.NextIn;
availableBytesIn = this._codec.AvailableBytesIn;
bitb = this.bitb;
bitk = this.bitk;
write = this.write;
num7 = (write < this.read) ? ((this.read - write) - 1) : (this.end - write);
if (this.last == 0)
{
this.mode = 0;
goto Label_11DA;
}
this.mode = 7;
Label_1007:
this.write = write;
r = this.Flush(r);
write = this.write;
num7 = (write < this.read) ? ((this.read - write) - 1) : (this.end - write);
if (this.read != this.write)
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
this.mode = 8;
Label_10BD:
r = 1;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
Label_11DA:
flag = true;
switch (this.mode)
{
case 0:
while (bitk < 3)
{
if (availableBytesIn != 0)
{
r = 0;
}
else
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
availableBytesIn--;
bitb |= (this._codec.InputBuffer[nextIn++] & 0xff) << bitk;
bitk += 8;
}
index = bitb & 7;
this.last = index & 1;
switch (SharedUtils.URShift(index, 1))
{
case 0:
bitb = SharedUtils.URShift(bitb, 3);
bitk -= 3;
index = bitk & 7;
bitb = SharedUtils.URShift(bitb, index);
bitk -= index;
this.mode = 1;
goto Label_11DA;
case 1:
{
numArray = new int[1];
numArray2 = new int[1];
int[][] numArray3 = new int[1][];
int[][] numArray4 = new int[1][];
InfTree.inflate_trees_fixed(numArray, numArray2, numArray3, numArray4, this._codec);
this.codes.Init(numArray[0], numArray2[0], numArray3[0], 0, numArray4[0], 0);
bitb = SharedUtils.URShift(bitb, 3);
bitk -= 3;
this.mode = 6;
goto Label_11DA;
}
case 2:
bitb = SharedUtils.URShift(bitb, 3);
bitk -= 3;
this.mode = 3;
goto Label_11DA;
case 3:
bitb = SharedUtils.URShift(bitb, 3);
bitk -= 3;
this.mode = 9;
this._codec.Message = "invalid block type";
r = -3;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
goto Label_11DA;
case 1:
while (bitk < 0x20)
{
if (availableBytesIn != 0)
{
r = 0;
}
else
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
availableBytesIn--;
bitb |= (this._codec.InputBuffer[nextIn++] & 0xff) << bitk;
bitk += 8;
}
if ((SharedUtils.URShift(~bitb, 0x10) & 0xffff) != (bitb & 0xffff))
{
this.mode = 9;
this._codec.Message = "invalid stored block lengths";
r = -3;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
this.left = bitb & 0xffff;
bitb = bitk = 0;
this.mode = (this.left != 0) ? 2 : ((this.last != 0) ? 7 : 0);
goto Label_11DA;
case 2:
if (availableBytesIn != 0)
{
if (num7 == 0)
{
if ((write == this.end) && (this.read != 0))
{
write = 0;
num7 = (write < this.read) ? ((this.read - write) - 1) : (this.end - write);
}
if (num7 == 0)
{
this.write = write;
r = this.Flush(r);
write = this.write;
num7 = (write < this.read) ? ((this.read - write) - 1) : (this.end - write);
if ((write == this.end) && (this.read != 0))
{
write = 0;
num7 = (write < this.read) ? ((this.read - write) - 1) : (this.end - write);
}
if (num7 == 0)
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
}
}
r = 0;
index = this.left;
if (index > availableBytesIn)
{
index = availableBytesIn;
}
if (index > num7)
{
index = num7;
}
Array.Copy(this._codec.InputBuffer, nextIn, this.window, write, index);
nextIn += index;
availableBytesIn -= index;
write += index;
num7 -= index;
this.left -= index;
if (this.left == 0)
{
this.mode = (this.last != 0) ? 7 : 0;
}
goto Label_11DA;
}
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
case 3:
while (bitk < 14)
{
if (availableBytesIn != 0)
{
r = 0;
}
else
{
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
availableBytesIn--;
bitb |= (this._codec.InputBuffer[nextIn++] & 0xff) << bitk;
bitk += 8;
}
this.table = index = bitb & 0x3fff;
if (((index & 0x1f) > 0x1d) || (((index >> 5) & 0x1f) > 0x1d))
{
this.mode = 9;
this._codec.Message = "too many length or distance symbols";
r = -3;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
index = (0x102 + (index & 0x1f)) + ((index >> 5) & 0x1f);
if ((this.blens == null) || (this.blens.Length < index))
{
this.blens = new int[index];
}
else
{
for (num8 = 0; num8 < index; num8++)
{
this.blens[num8] = 0;
}
}
bitb = SharedUtils.URShift(bitb, 14);
bitk -= 14;
this.index = 0;
this.mode = 4;
goto Label_0933;
case 4:
goto Label_0933;
case 5:
goto Label_0DD2;
case 6:
goto Label_0F15;
case 7:
goto Label_1007;
case 8:
goto Label_10BD;
case 9:
r = -3;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
r = -2;
this.bitb = bitb;
this.bitk = bitk;
this._codec.AvailableBytesIn = availableBytesIn;
this._codec.TotalBytesIn += nextIn - this._codec.NextIn;
this._codec.NextIn = nextIn;
this.write = write;
return(this.Flush(r));
}
internal int Process(int r)
{
int num = this._codec.NextIn;
int num2 = this._codec.AvailableBytesIn;
int num3 = this.bitb;
int num4 = this.bitk;
int num5 = this.writeAt;
int num6 = (num5 >= this.readAt) ? (this.end - num5) : (this.readAt - num5 - 1);
while (true)
{
switch (this.mode)
{
case InflateBlockMode.TYPE:
break;
case InflateBlockMode.LENS:
goto IL_030c;
case InflateBlockMode.STORED:
goto IL_03dd;
case InflateBlockMode.TABLE:
goto IL_068c;
case InflateBlockMode.BTREE:
goto IL_085f;
case InflateBlockMode.DTREE:
goto IL_0965;
case InflateBlockMode.CODES:
goto IL_0da6;
case InflateBlockMode.DRY:
goto IL_0e90;
case InflateBlockMode.DONE:
goto end_IL_0057;
case InflateBlockMode.BAD:
r = -3;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
default:
r = -2;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
while (num4 < 3)
{
if (num2 != 0)
{
r = 0;
num2--;
num3 |= (this._codec.InputBuffer[num++] & 0xFF) << num4;
num4 += 8;
continue;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
int num8 = num3 & 7;
this.last = (num8 & 1);
switch ((uint)num8 >> 1)
{
case 0u:
num3 >>= 3;
num4 -= 3;
num8 = (num4 & 7);
num3 >>= num8;
num4 -= num8;
this.mode = InflateBlockMode.LENS;
break;
case 1u:
{
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, this._codec);
this.codes.Init(array[0], array2[0], array3[0], 0, array4[0], 0);
num3 >>= 3;
num4 -= 3;
this.mode = InflateBlockMode.CODES;
break;
}
case 2u:
num3 >>= 3;
num4 -= 3;
this.mode = InflateBlockMode.TABLE;
break;
case 3u:
num3 >>= 3;
num4 -= 3;
this.mode = InflateBlockMode.BAD;
this._codec.Message = "invalid block type";
r = -3;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
continue;
IL_068c:
while (num4 < 14)
{
if (num2 != 0)
{
r = 0;
num2--;
num3 |= (this._codec.InputBuffer[num++] & 0xFF) << num4;
num4 += 8;
continue;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
num8 = (this.table = (num3 & 0x3FFF));
if ((num8 & 0x1F) <= 29 && (num8 >> 5 & 0x1F) <= 29)
{
num8 = 258 + (num8 & 0x1F) + (num8 >> 5 & 0x1F);
if (this.blens == null || this.blens.Length < num8)
{
this.blens = new int[num8];
}
else
{
Array.Clear(this.blens, 0, num8);
}
num3 >>= 14;
num4 -= 14;
this.index = 0;
this.mode = InflateBlockMode.BTREE;
goto IL_085f;
}
this.mode = InflateBlockMode.BAD;
this._codec.Message = "too many length or distance symbols";
r = -3;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
IL_030c:
while (num4 < 32)
{
if (num2 != 0)
{
r = 0;
num2--;
num3 |= (this._codec.InputBuffer[num++] & 0xFF) << num4;
num4 += 8;
continue;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
if ((~num3 >> 16 & 0xFFFF) != (num3 & 0xFFFF))
{
this.mode = InflateBlockMode.BAD;
this._codec.Message = "invalid stored block lengths";
r = -3;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
this.left = (num3 & 0xFFFF);
num3 = (num4 = 0);
this.mode = (InflateBlockMode)((this.left == 0) ? ((this.last != 0) ? 7 : 0) : 2);
continue;
IL_0da6:
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
r = this.codes.Process(this, r);
if (r != 1)
{
return(this.Flush(r));
}
r = 0;
num = this._codec.NextIn;
num2 = this._codec.AvailableBytesIn;
num3 = this.bitb;
num4 = this.bitk;
num5 = this.writeAt;
num6 = ((num5 >= this.readAt) ? (this.end - num5) : (this.readAt - num5 - 1));
if (this.last == 0)
{
this.mode = InflateBlockMode.TYPE;
continue;
}
this.mode = InflateBlockMode.DRY;
goto IL_0e90;
IL_03dd:
if (num2 == 0)
{
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
if (num6 == 0)
{
if (num5 == this.end && this.readAt != 0)
{
num5 = 0;
num6 = ((num5 >= this.readAt) ? (this.end - num5) : (this.readAt - num5 - 1));
}
if (num6 == 0)
{
this.writeAt = num5;
r = this.Flush(r);
num5 = this.writeAt;
num6 = ((num5 >= this.readAt) ? (this.end - num5) : (this.readAt - num5 - 1));
if (num5 == this.end && this.readAt != 0)
{
num5 = 0;
num6 = ((num5 >= this.readAt) ? (this.end - num5) : (this.readAt - num5 - 1));
}
if (num6 == 0)
{
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
}
}
r = 0;
num8 = this.left;
if (num8 > num2)
{
num8 = num2;
}
if (num8 > num6)
{
num8 = num6;
}
Array.Copy(this._codec.InputBuffer, num, this.window, num5, num8);
num += num8;
num2 -= num8;
num5 += num8;
num6 -= num8;
if ((this.left -= num8) == 0)
{
this.mode = (InflateBlockMode)((this.last != 0) ? 7 : 0);
}
continue;
IL_0965:
while (true)
{
num8 = this.table;
if (this.index < 258 + (num8 & 0x1F) + (num8 >> 5 & 0x1F))
{
num8 = this.bb[0];
while (num4 < num8)
{
if (num2 != 0)
{
r = 0;
num2--;
num3 |= (this._codec.InputBuffer[num++] & 0xFF) << num4;
num4 += 8;
continue;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
num8 = this.hufts[(this.tb[0] + (num3 & InternalInflateConstants.InflateMask[num8])) * 3 + 1];
int num12 = this.hufts[(this.tb[0] + (num3 & InternalInflateConstants.InflateMask[num8])) * 3 + 2];
if (num12 < 16)
{
num3 >>= num8;
num4 -= num8;
this.blens[this.index++] = num12;
continue;
}
int num13 = (num12 != 18) ? (num12 - 14) : 7;
int num14 = (num12 != 18) ? 3 : 11;
while (num4 < num8 + num13)
{
if (num2 != 0)
{
r = 0;
num2--;
num3 |= (this._codec.InputBuffer[num++] & 0xFF) << num4;
num4 += 8;
continue;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
num3 >>= num8;
num4 -= num8;
num14 += (num3 & InternalInflateConstants.InflateMask[num13]);
num3 >>= num13;
num4 -= num13;
num13 = this.index;
num8 = this.table;
if (num13 + num14 <= 258 + (num8 & 0x1F) + (num8 >> 5 & 0x1F) && (num12 != 16 || num13 >= 1))
{
num12 = ((num12 == 16) ? this.blens[num13 - 1] : 0);
while (true)
{
this.blens[num13++] = num12;
if (--num14 == 0)
{
break;
}
}
this.index = num13;
continue;
}
this.blens = null;
this.mode = InflateBlockMode.BAD;
this._codec.Message = "invalid bit length repeat";
r = -3;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
break;
}
this.tb[0] = -1;
int[] array5 = new int[1]
{
9
};
int[] array6 = new int[1]
{
6
};
int[] array7 = new int[1];
int[] array8 = new int[1];
num8 = this.table;
num8 = this.inftree.inflate_trees_dynamic(257 + (num8 & 0x1F), 1 + (num8 >> 5 & 0x1F), this.blens, array5, array6, array7, array8, this.hufts, this._codec);
switch (num8)
{
case -3:
this.blens = null;
this.mode = InflateBlockMode.BAD;
goto default;
default:
r = num8;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
case 0:
break;
}
this.codes.Init(array5[0], array6[0], this.hufts, array7[0], this.hufts, array8[0]);
this.mode = InflateBlockMode.CODES;
goto IL_0da6;
IL_085f:
while (this.index < 4 + (this.table >> 10))
{
while (num4 < 3)
{
if (num2 != 0)
{
r = 0;
num2--;
num3 |= (this._codec.InputBuffer[num++] & 0xFF) << num4;
num4 += 8;
continue;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
this.blens[InflateBlocks.border[this.index++]] = (num3 & 7);
num3 >>= 3;
num4 -= 3;
}
while (this.index < 19)
{
this.blens[InflateBlocks.border[this.index++]] = 0;
}
this.bb[0] = 7;
num8 = this.inftree.inflate_trees_bits(this.blens, this.bb, this.tb, this.hufts, this._codec);
if (num8 != 0)
{
r = num8;
if (r == -3)
{
this.blens = null;
this.mode = InflateBlockMode.BAD;
}
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
this.index = 0;
this.mode = InflateBlockMode.DTREE;
goto IL_0965;
IL_0e90:
this.writeAt = num5;
r = this.Flush(r);
num5 = this.writeAt;
num6 = ((num5 >= this.readAt) ? (this.end - num5) : (this.readAt - num5 - 1));
if (this.readAt != this.writeAt)
{
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
this.mode = InflateBlockMode.DONE;
break;
continue;
end_IL_0057:
break;
}
r = 1;
this.bitb = num3;
this.bitk = num4;
this._codec.AvailableBytesIn = num2;
this._codec.TotalBytesIn += num - this._codec.NextIn;
this._codec.NextIn = num;
this.writeAt = num5;
return(this.Flush(r));
}
internal int Process(int r)
{
int p = _codec.NextIn;
int m = _codec.AvailableBytesIn;
int b = bitb;
int k = bitk;
int q = writeAt;
int l = ((q < readAt) ? (readAt - q - 1) : (end - q));
while (true)
{
switch (mode)
{
case InflateBlockMode.TYPE:
{
for (; k < 3; k += 8)
{
if (m != 0)
{
r = 0;
m--;
b |= (_codec.InputBuffer[p++] & 0xFF) << k;
continue;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
int t = b & 7;
last = t & 1;
switch ((uint)t >> 1)
{
case 0u:
b >>= 3;
k -= 3;
t = k & 7;
b >>= t;
k -= t;
mode = InflateBlockMode.LENS;
break;
case 1u:
{
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, _codec);
codes.Init(bl[0], bd[0], tl[0], 0, td[0], 0);
b >>= 3;
k -= 3;
mode = InflateBlockMode.CODES;
break;
}
case 2u:
b >>= 3;
k -= 3;
mode = InflateBlockMode.TABLE;
break;
case 3u:
b >>= 3;
k -= 3;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid block type";
r = -3;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
break;
}
case InflateBlockMode.LENS:
for (; k < 32; k += 8)
{
if (m != 0)
{
r = 0;
m--;
b |= (_codec.InputBuffer[p++] & 0xFF) << k;
continue;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
if (((~b >> 16) & 0xFFFF) != (b & 0xFFFF))
{
mode = InflateBlockMode.BAD;
_codec.Message = "invalid stored block lengths";
r = -3;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
left = b & 0xFFFF;
b = (k = 0);
mode = ((left != 0) ? InflateBlockMode.STORED : ((last != 0) ? InflateBlockMode.DRY : InflateBlockMode.TYPE));
break;
case InflateBlockMode.STORED:
{
if (m == 0)
{
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
if (l == 0)
{
if (q == end && readAt != 0)
{
q = 0;
l = ((q < readAt) ? (readAt - q - 1) : (end - q));
}
if (l == 0)
{
writeAt = q;
r = Flush(r);
q = writeAt;
l = ((q < readAt) ? (readAt - q - 1) : (end - q));
if (q == end && readAt != 0)
{
q = 0;
l = ((q < readAt) ? (readAt - q - 1) : (end - q));
}
if (l == 0)
{
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
}
}
r = 0;
int t = left;
if (t > m)
{
t = m;
}
if (t > l)
{
t = l;
}
Array.Copy(_codec.InputBuffer, p, window, q, t);
p += t;
m -= t;
q += t;
l -= t;
if ((left -= t) == 0)
{
mode = ((last != 0) ? InflateBlockMode.DRY : InflateBlockMode.TYPE);
}
break;
}
case InflateBlockMode.TABLE:
{
for (; k < 14; k += 8)
{
if (m != 0)
{
r = 0;
m--;
b |= (_codec.InputBuffer[p++] & 0xFF) << k;
continue;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
int t = (table = b & 0x3FFF);
if ((t & 0x1F) > 29 || ((t >> 5) & 0x1F) > 29)
{
mode = InflateBlockMode.BAD;
_codec.Message = "too many length or distance symbols";
r = -3;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
t = 258 + (t & 0x1F) + ((t >> 5) & 0x1F);
if (blens == null || blens.Length < t)
{
blens = new int[t];
}
else
{
Array.Clear(blens, 0, t);
}
b >>= 14;
k -= 14;
index = 0;
mode = InflateBlockMode.BTREE;
goto case InflateBlockMode.BTREE;
}
case InflateBlockMode.BTREE:
{
while (index < 4 + (table >> 10))
{
for (; k < 3; k += 8)
{
if (m != 0)
{
r = 0;
m--;
b |= (_codec.InputBuffer[p++] & 0xFF) << k;
continue;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
blens[border[index++]] = b & 7;
b >>= 3;
k -= 3;
}
while (index < 19)
{
blens[border[index++]] = 0;
}
bb[0] = 7;
int t = inftree.inflate_trees_bits(blens, bb, tb, hufts, _codec);
if (t != 0)
{
r = t;
if (r == -3)
{
blens = null;
mode = InflateBlockMode.BAD;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
index = 0;
mode = InflateBlockMode.DTREE;
goto case InflateBlockMode.DTREE;
}
case InflateBlockMode.DTREE:
{
int t;
while (true)
{
t = table;
if (index >= 258 + (t & 0x1F) + ((t >> 5) & 0x1F))
{
break;
}
for (t = bb[0]; k < t; k += 8)
{
if (m != 0)
{
r = 0;
m--;
b |= (_codec.InputBuffer[p++] & 0xFF) << k;
continue;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
t = hufts[(tb[0] + (b & InternalInflateConstants.InflateMask[t])) * 3 + 1];
int c = hufts[(tb[0] + (b & InternalInflateConstants.InflateMask[t])) * 3 + 2];
if (c < 16)
{
b >>= t;
k -= t;
blens[index++] = c;
continue;
}
int i = ((c == 18) ? 7 : (c - 14));
int j = ((c == 18) ? 11 : 3);
for (; k < t + i; k += 8)
{
if (m != 0)
{
r = 0;
m--;
b |= (_codec.InputBuffer[p++] & 0xFF) << k;
continue;
}
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
b >>= t;
k -= t;
j += b & InternalInflateConstants.InflateMask[i];
b >>= i;
k -= i;
i = index;
t = table;
if (i + j > 258 + (t & 0x1F) + ((t >> 5) & 0x1F) || (c == 16 && i < 1))
{
blens = null;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid bit length repeat";
r = -3;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
c = ((c == 16) ? blens[i - 1] : 0);
do
{
blens[i++] = c;
}while (--j != 0);
index = i;
}
tb[0] = -1;
int[] bl2 = new int[1]
{
9
};
int[] bd2 = new int[1]
{
6
};
int[] tl2 = new int[1];
int[] td2 = new int[1];
t = table;
t = inftree.inflate_trees_dynamic(257 + (t & 0x1F), 1 + ((t >> 5) & 0x1F), blens, bl2, bd2, tl2, td2, hufts, _codec);
if (t != 0)
{
if (t == -3)
{
blens = null;
mode = InflateBlockMode.BAD;
}
r = t;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
codes.Init(bl2[0], bd2[0], hufts, tl2[0], hufts, td2[0]);
mode = InflateBlockMode.CODES;
goto case InflateBlockMode.CODES;
}
case InflateBlockMode.CODES:
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
r = codes.Process(this, r);
if (r != 1)
{
return(Flush(r));
}
r = 0;
p = _codec.NextIn;
m = _codec.AvailableBytesIn;
b = bitb;
k = bitk;
q = writeAt;
l = ((q < readAt) ? (readAt - q - 1) : (end - q));
if (last == 0)
{
mode = InflateBlockMode.TYPE;
break;
}
mode = InflateBlockMode.DRY;
goto case InflateBlockMode.DRY;
case InflateBlockMode.DRY:
writeAt = q;
r = Flush(r);
q = writeAt;
l = ((q < readAt) ? (readAt - q - 1) : (end - q));
if (readAt != writeAt)
{
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
mode = InflateBlockMode.DONE;
goto case InflateBlockMode.DONE;
case InflateBlockMode.DONE:
r = 1;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
case InflateBlockMode.BAD:
r = -3;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
default:
r = -2;
bitb = b;
bitk = k;
_codec.AvailableBytesIn = m;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
}
}
internal int Process(int r)
{
int p = _codec.NextIn;
int n2 = _codec.AvailableBytesIn;
int b4 = bitb;
int k2 = bitk;
int q = writeAt;
int m2 = (q < readAt) ? (readAt - q - 1) : (end - q);
while (true)
{
switch (mode)
{
case InflateBlockMode.TYPE:
{
for (; k2 < 3; k2 += 8)
{
if (n2 != 0)
{
r = 0;
n2--;
b4 |= (_codec.InputBuffer[p++] & 0xFF) << k2;
continue;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
int t12 = b4 & 7;
last = (t12 & 1);
switch ((uint)t12 >> 1)
{
case 0u:
b4 >>= 3;
k2 -= 3;
t12 = (k2 & 7);
b4 >>= t12;
k2 -= t12;
mode = InflateBlockMode.LENS;
break;
case 1u:
{
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, _codec);
codes.Init(bl[0], bd[0], tl[0], 0, td[0], 0);
b4 >>= 3;
k2 -= 3;
mode = InflateBlockMode.CODES;
break;
}
case 2u:
b4 >>= 3;
k2 -= 3;
mode = InflateBlockMode.TABLE;
break;
case 3u:
b4 >>= 3;
k2 -= 3;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid block type";
r = -3;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
break;
}
case InflateBlockMode.LENS:
for (; k2 < 32; k2 += 8)
{
if (n2 != 0)
{
r = 0;
n2--;
b4 |= (_codec.InputBuffer[p++] & 0xFF) << k2;
continue;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
if (((~b4 >> 16) & 0xFFFF) != (b4 & 0xFFFF))
{
mode = InflateBlockMode.BAD;
_codec.Message = "invalid stored block lengths";
r = -3;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
left = (b4 & 0xFFFF);
b4 = (k2 = 0);
mode = ((left != 0) ? InflateBlockMode.STORED : ((last != 0) ? InflateBlockMode.DRY : InflateBlockMode.TYPE));
break;
case InflateBlockMode.STORED:
{
if (n2 == 0)
{
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
if (m2 == 0)
{
if (q == end && readAt != 0)
{
q = 0;
m2 = ((q < readAt) ? (readAt - q - 1) : (end - q));
}
if (m2 == 0)
{
writeAt = q;
r = Flush(r);
q = writeAt;
m2 = ((q < readAt) ? (readAt - q - 1) : (end - q));
if (q == end && readAt != 0)
{
q = 0;
m2 = ((q < readAt) ? (readAt - q - 1) : (end - q));
}
if (m2 == 0)
{
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
}
}
r = 0;
int t12 = left;
if (t12 > n2)
{
t12 = n2;
}
if (t12 > m2)
{
t12 = m2;
}
Array.Copy(_codec.InputBuffer, p, window, q, t12);
p += t12;
n2 -= t12;
q += t12;
m2 -= t12;
if ((left -= t12) == 0)
{
mode = ((last != 0) ? InflateBlockMode.DRY : InflateBlockMode.TYPE);
}
break;
}
case InflateBlockMode.TABLE:
{
for (; k2 < 14; k2 += 8)
{
if (n2 != 0)
{
r = 0;
n2--;
b4 |= (_codec.InputBuffer[p++] & 0xFF) << k2;
continue;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
int t12 = table = (b4 & 0x3FFF);
if ((t12 & 0x1F) > 29 || ((t12 >> 5) & 0x1F) > 29)
{
mode = InflateBlockMode.BAD;
_codec.Message = "too many length or distance symbols";
r = -3;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
t12 = 258 + (t12 & 0x1F) + ((t12 >> 5) & 0x1F);
if (blens == null || blens.Length < t12)
{
blens = new int[t12];
}
else
{
Array.Clear(blens, 0, t12);
}
b4 >>= 14;
k2 -= 14;
index = 0;
mode = InflateBlockMode.BTREE;
goto case InflateBlockMode.BTREE;
}
case InflateBlockMode.BTREE:
{
while (index < 4 + (table >> 10))
{
for (; k2 < 3; k2 += 8)
{
if (n2 != 0)
{
r = 0;
n2--;
b4 |= (_codec.InputBuffer[p++] & 0xFF) << k2;
continue;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
blens[border[index++]] = (b4 & 7);
b4 >>= 3;
k2 -= 3;
}
while (index < 19)
{
blens[border[index++]] = 0;
}
bb[0] = 7;
int t12 = inftree.inflate_trees_bits(blens, bb, tb, hufts, _codec);
if (t12 != 0)
{
r = t12;
if (r == -3)
{
blens = null;
mode = InflateBlockMode.BAD;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
index = 0;
mode = InflateBlockMode.DTREE;
goto case InflateBlockMode.DTREE;
}
case InflateBlockMode.DTREE:
{
int t12;
while (true)
{
t12 = table;
if (index >= 258 + (t12 & 0x1F) + ((t12 >> 5) & 0x1F))
{
break;
}
for (t12 = bb[0]; k2 < t12; k2 += 8)
{
if (n2 != 0)
{
r = 0;
n2--;
b4 |= (_codec.InputBuffer[p++] & 0xFF) << k2;
continue;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
t12 = hufts[(tb[0] + (b4 & InternalInflateConstants.InflateMask[t12])) * 3 + 1];
int c2 = hufts[(tb[0] + (b4 & InternalInflateConstants.InflateMask[t12])) * 3 + 2];
if (c2 < 16)
{
b4 >>= t12;
k2 -= t12;
blens[index++] = c2;
continue;
}
int i2 = (c2 == 18) ? 7 : (c2 - 14);
int j2 = (c2 == 18) ? 11 : 3;
for (; k2 < t12 + i2; k2 += 8)
{
if (n2 != 0)
{
r = 0;
n2--;
b4 |= (_codec.InputBuffer[p++] & 0xFF) << k2;
continue;
}
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
b4 >>= t12;
k2 -= t12;
j2 += (b4 & InternalInflateConstants.InflateMask[i2]);
b4 >>= i2;
k2 -= i2;
i2 = index;
t12 = table;
if (i2 + j2 > 258 + (t12 & 0x1F) + ((t12 >> 5) & 0x1F) || (c2 == 16 && i2 < 1))
{
blens = null;
mode = InflateBlockMode.BAD;
_codec.Message = "invalid bit length repeat";
r = -3;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
c2 = ((c2 == 16) ? blens[i2 - 1] : 0);
do
{
blens[i2++] = c2;
}while (--j2 != 0);
index = i2;
}
tb[0] = -1;
int[] bl2 = new int[1]
{
9
};
int[] bd2 = new int[1]
{
6
};
int[] tl2 = new int[1];
int[] td2 = new int[1];
t12 = table;
t12 = inftree.inflate_trees_dynamic(257 + (t12 & 0x1F), 1 + ((t12 >> 5) & 0x1F), blens, bl2, bd2, tl2, td2, hufts, _codec);
if (t12 != 0)
{
if (t12 == -3)
{
blens = null;
mode = InflateBlockMode.BAD;
}
r = t12;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
codes.Init(bl2[0], bd2[0], hufts, tl2[0], hufts, td2[0]);
mode = InflateBlockMode.CODES;
goto case InflateBlockMode.CODES;
}
case InflateBlockMode.CODES:
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
r = codes.Process(this, r);
if (r != 1)
{
return(Flush(r));
}
r = 0;
p = _codec.NextIn;
n2 = _codec.AvailableBytesIn;
b4 = bitb;
k2 = bitk;
q = writeAt;
m2 = ((q < readAt) ? (readAt - q - 1) : (end - q));
if (last == 0)
{
mode = InflateBlockMode.TYPE;
break;
}
mode = InflateBlockMode.DRY;
goto case InflateBlockMode.DRY;
case InflateBlockMode.DRY:
writeAt = q;
r = Flush(r);
q = writeAt;
m2 = ((q < readAt) ? (readAt - q - 1) : (end - q));
if (readAt != writeAt)
{
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
mode = InflateBlockMode.DONE;
goto case InflateBlockMode.DONE;
case InflateBlockMode.DONE:
r = 1;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
case InflateBlockMode.BAD:
r = -3;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
default:
r = -2;
bitb = b4;
bitk = k2;
_codec.AvailableBytesIn = n2;
_codec.TotalBytesIn += p - _codec.NextIn;
_codec.NextIn = p;
writeAt = q;
return(Flush(r));
}
}
}