internal Class2(ZlibCodec codec, object checkfn, int w)
{
this.zlibCodec_0 = codec;
this.int_11 = new int[4320];
this.byte_0 = new byte[w];
this.int_12 = w;
this.object_0 = checkfn;
this.enum2_0 = Class2.Enum2.const_0;
this.Reset();
}
internal uint Reset()
{
uint result = this.uint_0;
this.enum2_0 = Class2.Enum2.const_0;
this.int_9 = 0;
this.int_10 = 0;
this.int_14 = 0;
this.int_13 = 0;
if (this.object_0 != null)
{
this.zlibCodec_0.uint_0 = (this.uint_0 = Adler.Adler32(0u, null, 0, 0));
}
return(result);
}
internal int method_0(int int_15)
{
int num;
int nextIn = this.zlibCodec_0.NextIn;
int availableBytesIn = this.zlibCodec_0.AvailableBytesIn;
int num2 = this.int_10;
int num3 = this.int_9;
int destinationIndex = this.int_14;
int num7 = (destinationIndex < this.int_13) ? ((this.int_13 - destinationIndex) - 1) : (this.int_12 - destinationIndex);
goto Label_07FC;
Label_0056:
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
int_15 = this.class4_0.method_1(this, int_15);
if (int_15 != 1)
{
return(this.Flush(int_15));
}
int_15 = 0;
nextIn = this.zlibCodec_0.NextIn;
availableBytesIn = this.zlibCodec_0.AvailableBytesIn;
num2 = this.int_10;
num3 = this.int_9;
destinationIndex = this.int_14;
num7 = (destinationIndex < this.int_13) ? ((this.int_13 - destinationIndex) - 1) : (this.int_12 - destinationIndex);
if (this.int_8 != 0)
{
this.enum2_0 = Enum2.const_7;
goto Label_0E11;
}
this.enum2_0 = Enum2.const_0;
goto Label_07FC;
Label_02C8:
num = this.int_3;
if (this.int_4 < ((0x102 + (num & 0x1f)) + ((num >> 5) & 0x1f)))
{
num = this.int_6[0];
while (num3 < num)
{
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
int_15 = 0;
availableBytesIn--;
num2 |= (this.zlibCodec_0.InputBuffer[nextIn++] & 0xff) << num3;
num3 += 8;
}
num = this.int_11[((this.int_7[0] + (num2 & Class3.int_0[num])) * 3) + 1];
int num10 = this.int_11[((this.int_7[0] + (num2 & Class3.int_0[num])) * 3) + 2];
if (num10 < 0x10)
{
num2 = num2 >> num;
num3 -= num;
this.int_5[this.int_4++] = num10;
}
else
{
int index = (num10 == 0x12) ? 7 : (num10 - 14);
int num9 = (num10 == 0x12) ? 11 : 3;
while (num3 < (num + index))
{
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
int_15 = 0;
availableBytesIn--;
num2 |= (this.zlibCodec_0.InputBuffer[nextIn++] & 0xff) << num3;
num3 += 8;
}
num2 = num2 >> num;
num3 -= num;
num9 += num2 & Class3.int_0[index];
num2 = num2 >> index;
num3 -= index;
index = this.int_4;
num = this.int_3;
if (((index + num9) > ((0x102 + (num & 0x1f)) + ((num >> 5) & 0x1f))) || ((num10 == 0x10) && (index < 1)))
{
this.int_5 = null;
this.enum2_0 = Enum2.const_9;
this.zlibCodec_0.Message = "invalid bit length repeat";
int_15 = -3;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(-3));
}
num10 = (num10 == 0x10) ? this.int_5[index - 1] : 0;
do
{
this.int_5[index++] = num10;
}while (--num9 != 0);
this.int_4 = index;
}
goto Label_02C8;
}
this.int_7[0] = -1;
int[] numArray5 = new int[] { 9 };
int[] numArray6 = new int[] { 6 };
int[] numArray7 = new int[1];
int[] numArray8 = new int[1];
num = this.int_3;
num = this.class6_0.method_2(0x101 + (num & 0x1f), 1 + ((num >> 5) & 0x1f), this.int_5, numArray5, numArray6, numArray7, numArray8, this.int_11, this.zlibCodec_0);
if (num != 0)
{
if (num == -3)
{
this.int_5 = null;
this.enum2_0 = Enum2.const_9;
}
int_15 = num;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
this.class4_0.method_0(numArray5[0], numArray6[0], this.int_11, numArray7[0], this.int_11, numArray8[0]);
this.enum2_0 = Enum2.const_6;
goto Label_0056;
Label_0401:
while (this.int_4 < (4 + (this.int_3 >> 10)))
{
while (num3 < 3)
{
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
int_15 = 0;
availableBytesIn--;
num2 |= (this.zlibCodec_0.InputBuffer[nextIn++] & 0xff) << num3;
num3 += 8;
}
this.int_5[int_1[this.int_4++]] = num2 & 7;
num2 = num2 >> 3;
num3 -= 3;
}
while (this.int_4 < 0x13)
{
this.int_5[int_1[this.int_4++]] = 0;
}
this.int_6[0] = 7;
num = this.class6_0.method_1(this.int_5, this.int_6, this.int_7, this.int_11, this.zlibCodec_0);
if (num != 0)
{
int_15 = num;
if (int_15 == -3)
{
this.int_5 = null;
this.enum2_0 = Enum2.const_9;
}
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
this.int_4 = 0;
this.enum2_0 = Enum2.const_5;
goto Label_02C8;
Label_07FC:
switch (this.enum2_0)
{
case Enum2.const_0:
while (num3 < 3)
{
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
int_15 = 0;
availableBytesIn--;
num2 |= (this.zlibCodec_0.InputBuffer[nextIn++] & 0xff) << num3;
num3 += 8;
}
num = num2 & 7;
this.int_8 = num & 1;
switch (((uint)(num >> 1)))
{
case 0:
num2 = num2 >> 3;
num3 -= 3;
num = num3 & 7;
num2 = num2 >> num;
num3 -= num;
this.enum2_0 = Enum2.const_1;
break;
case 1:
{
int[] numArray = new int[1];
int[] numArray2 = new int[1];
int[][] numArray3 = new int[1][];
int[][] numArray4 = new int[1][];
Class6.smethod_0(numArray, numArray2, numArray3, numArray4, this.zlibCodec_0);
this.class4_0.method_0(numArray[0], numArray2[0], numArray3[0], 0, numArray4[0], 0);
num2 = num2 >> 3;
num3 -= 3;
this.enum2_0 = Enum2.const_6;
break;
}
case 2:
num2 = num2 >> 3;
num3 -= 3;
this.enum2_0 = Enum2.const_3;
break;
case 3:
num2 = num2 >> 3;
num3 -= 3;
this.enum2_0 = Enum2.const_9;
this.zlibCodec_0.Message = "invalid block type";
int_15 = -3;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(-3));
}
goto Label_07FC;
case Enum2.const_1:
while (num3 < 0x20)
{
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
int_15 = 0;
availableBytesIn--;
num2 |= (this.zlibCodec_0.InputBuffer[nextIn++] & 0xff) << num3;
num3 += 8;
}
if (((~num2 >> 0x10) & 0xffff) != (num2 & 0xffff))
{
this.enum2_0 = Enum2.const_9;
this.zlibCodec_0.Message = "invalid stored block lengths";
int_15 = -3;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(-3));
}
this.int_2 = num2 & 0xffff;
num2 = num3 = 0;
this.enum2_0 = (this.int_2 != 0) ? Enum2.const_2 : ((this.int_8 != 0) ? Enum2.const_7 : Enum2.const_0);
goto Label_07FC;
case Enum2.const_2:
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
if (num7 == 0)
{
if ((destinationIndex == this.int_12) && (this.int_13 != 0))
{
destinationIndex = 0;
num7 = (0 < this.int_13) ? ((this.int_13 - destinationIndex) - 1) : (this.int_12 - destinationIndex);
}
if (num7 == 0)
{
this.int_14 = destinationIndex;
int_15 = this.Flush(int_15);
destinationIndex = this.int_14;
num7 = (destinationIndex < this.int_13) ? ((this.int_13 - destinationIndex) - 1) : (this.int_12 - destinationIndex);
if ((destinationIndex == this.int_12) && (this.int_13 != 0))
{
destinationIndex = 0;
num7 = (0 < this.int_13) ? ((this.int_13 - destinationIndex) - 1) : (this.int_12 - destinationIndex);
}
if (num7 == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
}
}
int_15 = 0;
num = this.int_2;
if (num > availableBytesIn)
{
num = availableBytesIn;
}
if (num > num7)
{
num = num7;
}
Array.Copy(this.zlibCodec_0.InputBuffer, nextIn, this.byte_0, destinationIndex, num);
nextIn += num;
availableBytesIn -= num;
destinationIndex += num;
num7 -= num;
this.int_2 -= num;
if (this.int_2 == 0)
{
this.enum2_0 = (this.int_8 != 0) ? Enum2.const_7 : Enum2.const_0;
}
goto Label_07FC;
case Enum2.const_3:
while (num3 < 14)
{
if (availableBytesIn == 0)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
int_15 = 0;
availableBytesIn--;
num2 |= (this.zlibCodec_0.InputBuffer[nextIn++] & 0xff) << num3;
num3 += 8;
}
this.int_3 = num = num2 & 0x3fff;
if (((num & 0x1f) > 0x1d) || (((num >> 5) & 0x1f) > 0x1d))
{
this.enum2_0 = Enum2.const_9;
this.zlibCodec_0.Message = "too many length or distance symbols";
int_15 = -3;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(-3));
}
num = (0x102 + (num & 0x1f)) + ((num >> 5) & 0x1f);
if ((this.int_5 != null) && (this.int_5.Length >= num))
{
Array.Clear(this.int_5, 0, num);
}
else
{
this.int_5 = new int[num];
}
num2 = num2 >> 14;
num3 -= 14;
this.int_4 = 0;
this.enum2_0 = Enum2.const_4;
goto Label_0401;
case Enum2.const_4:
goto Label_0401;
case Enum2.const_5:
goto Label_02C8;
case Enum2.const_6:
goto Label_0056;
case Enum2.const_7:
break;
case Enum2.const_8:
goto Label_0EB8;
case Enum2.const_9:
int_15 = -3;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(-3));
default:
int_15 = -2;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(-2));
}
Label_0E11:
this.int_14 = destinationIndex;
int_15 = this.Flush(int_15);
destinationIndex = this.int_14;
num7 = (destinationIndex < this.int_13) ? ((this.int_13 - destinationIndex) - 1) : (this.int_12 - destinationIndex);
if (this.int_13 != this.int_14)
{
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(int_15));
}
this.enum2_0 = Enum2.const_8;
Label_0EB8:
int_15 = 1;
this.int_10 = num2;
this.int_9 = num3;
this.zlibCodec_0.AvailableBytesIn = availableBytesIn;
this.zlibCodec_0.TotalBytesIn += nextIn - this.zlibCodec_0.NextIn;
this.zlibCodec_0.NextIn = nextIn;
this.int_14 = destinationIndex;
return(this.Flush(1));
}
