internal int Reset()
{
ZlibCodec arg_1C_0 = this.zlibCodec_0;
this.zlibCodec_0.TotalBytesOut = 0L;
arg_1C_0.TotalBytesIn = 0L;
this.zlibCodec_0.Message = null;
this.enum3_0 = (this.HandleRfc1950HeaderBytes ? Class5.Enum3.const_0 : Class5.Enum3.const_7);
this.class2_0.Reset();
return 0;
}
internal int method_1()
{
if (this.enum3_0 != Class5.Enum3.const_13)
{
this.enum3_0 = Class5.Enum3.const_13;
this.int_3 = 0;
}
int num;
if ((num = this.zlibCodec_0.AvailableBytesIn) == 0)
{
return -5;
}
int num2 = this.zlibCodec_0.NextIn;
int num3 = this.int_3;
while (num != 0 && num3 < 4)
{
if (this.zlibCodec_0.InputBuffer[num2] == Class5.byte_0[num3])
{
num3++;
}
else if (this.zlibCodec_0.InputBuffer[num2] != 0)
{
num3 = 0;
}
else
{
num3 = 4 - num3;
}
num2++;
num--;
}
this.zlibCodec_0.TotalBytesIn += (long)(num2 - this.zlibCodec_0.NextIn);
this.zlibCodec_0.NextIn = num2;
this.zlibCodec_0.AvailableBytesIn = num;
this.int_3 = num3;
if (num3 != 4)
{
return -3;
}
long totalBytesIn = this.zlibCodec_0.TotalBytesIn;
long totalBytesOut = this.zlibCodec_0.TotalBytesOut;
this.Reset();
this.zlibCodec_0.TotalBytesIn = totalBytesIn;
this.zlibCodec_0.TotalBytesOut = totalBytesOut;
this.enum3_0 = Class5.Enum3.const_7;
return 0;
}
internal int SetDictionary(byte[] byte_1)
{
int int_ = 0;
int num = byte_1.Length;
if (this.enum3_0 != Class5.Enum3.const_6)
{
throw new ZlibException("Stream error.");
}
if (Adler.Adler32(1u, byte_1, 0, byte_1.Length) != this.zlibCodec_0.uint_0)
{
return -3;
}
this.zlibCodec_0.uint_0 = Adler.Adler32(0u, null, 0, 0);
if (num >= 1 << this.int_4)
{
num = (1 << this.int_4) - 1;
int_ = byte_1.Length - num;
}
this.class2_0.SetDictionary(byte_1, int_, num);
this.enum3_0 = Class5.Enum3.const_7;
return 0;
}
internal int Inflate(FlushType flushType_0)
{
if (this.zlibCodec_0.InputBuffer == null)
{
throw new ZlibException("InputBuffer is null. ");
}
int num = 0;
int num2 = -5;
while (true)
{
switch (this.enum3_0)
{
case Class5.Enum3.const_0:
if (this.zlibCodec_0.AvailableBytesIn == 0)
{
return num2;
}
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
if (((this.int_2 = (int)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++]) & 15) != 8)
{
this.enum3_0 = Class5.Enum3.const_13;
this.zlibCodec_0.Message = string.Format("unknown compression method (0x{0:X2})", this.int_2);
this.int_3 = 5;
continue;
}
if ((this.int_2 >> 4) + 8 > this.int_4)
{
this.enum3_0 = Class5.Enum3.const_13;
this.zlibCodec_0.Message = string.Format("invalid window size ({0})", (this.int_2 >> 4) + 8);
this.int_3 = 5;
continue;
}
this.enum3_0 = Class5.Enum3.const_1;
continue;
case Class5.Enum3.const_1:
{
if (this.zlibCodec_0.AvailableBytesIn == 0)
{
return num2;
}
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
int num3 = (int)(this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] & 255);
if (((this.int_2 << 8) + num3) % 31 != 0)
{
this.enum3_0 = Class5.Enum3.const_13;
this.zlibCodec_0.Message = "incorrect header check";
this.int_3 = 5;
continue;
}
this.enum3_0 = (((num3 & 32) == 0) ? Class5.Enum3.const_7 : Class5.Enum3.const_2);
continue;
}
case Class5.Enum3.const_2:
if (this.zlibCodec_0.AvailableBytesIn != 0)
{
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
unchecked
{
this.uint_1 = (uint)((long)((long)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] << 24) & ((long)(ulong)-16777216));
}
this.enum3_0 = Class5.Enum3.const_3;
continue;
}
return num2;
case Class5.Enum3.const_3:
if (this.zlibCodec_0.AvailableBytesIn != 0)
{
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
this.uint_1 += (uint)((int)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] << 16 & 16711680);
this.enum3_0 = Class5.Enum3.const_4;
continue;
}
return num2;
case Class5.Enum3.const_4:
if (this.zlibCodec_0.AvailableBytesIn != 0)
{
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
this.uint_1 += (uint)((int)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] << 8 & 65280);
this.enum3_0 = Class5.Enum3.const_5;
continue;
}
return num2;
case Class5.Enum3.const_5:
goto IL_60B;
case Class5.Enum3.const_6:
goto IL_694;
case Class5.Enum3.const_7:
num2 = this.class2_0.method_0(num2);
if (num2 == -3)
{
this.enum3_0 = Class5.Enum3.const_13;
this.int_3 = 0;
continue;
}
if (num2 == 0)
{
num2 = num;
}
if (num2 != 1)
{
return num2;
}
num2 = num;
this.uint_0 = this.class2_0.Reset();
if (this.HandleRfc1950HeaderBytes)
{
this.enum3_0 = Class5.Enum3.const_8;
continue;
}
goto IL_6B8;
case Class5.Enum3.const_8:
if (this.zlibCodec_0.AvailableBytesIn != 0)
{
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
unchecked
{
this.uint_1 = (uint)((long)((long)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] << 24) & (long)((ulong)-16777216));
}
this.enum3_0 = Class5.Enum3.const_9;
continue;
}
return num2;
case Class5.Enum3.const_9:
if (this.zlibCodec_0.AvailableBytesIn != 0)
{
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
this.uint_1 += (uint)((int)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] << 16 & 16711680);
this.enum3_0 = Class5.Enum3.const_10;
continue;
}
return num2;
case Class5.Enum3.const_10:
if (this.zlibCodec_0.AvailableBytesIn != 0)
{
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
this.uint_1 += (uint)((int)this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] << 8 & 65280);
this.enum3_0 = Class5.Enum3.const_11;
continue;
}
return num2;
case Class5.Enum3.const_11:
if (this.zlibCodec_0.AvailableBytesIn == 0)
{
return num2;
}
num2 = num;
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
this.uint_1 += (uint)(this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] & 255);
if (this.uint_0 != this.uint_1)
{
this.enum3_0 = Class5.Enum3.const_13;
this.zlibCodec_0.Message = "incorrect data check";
this.int_3 = 5;
continue;
}
goto IL_6CA;
case Class5.Enum3.const_12:
return 1;
case Class5.Enum3.const_13:
goto IL_6D4;
}
goto Block_20;
}
return num2;
Block_20:
throw new ZlibException("Stream error.");
IL_60B:
if (this.zlibCodec_0.AvailableBytesIn == 0)
{
return num2;
}
this.zlibCodec_0.AvailableBytesIn--;
this.zlibCodec_0.TotalBytesIn += 1L;
this.uint_1 += (uint)(this.zlibCodec_0.InputBuffer[this.zlibCodec_0.NextIn++] & 255);
this.zlibCodec_0.uint_0 = this.uint_1;
this.enum3_0 = Class5.Enum3.const_6;
return 2;
IL_694:
this.enum3_0 = Class5.Enum3.const_13;
this.zlibCodec_0.Message = "need dictionary";
this.int_3 = 0;
return -2;
IL_6B8:
this.enum3_0 = Class5.Enum3.const_12;
return 1;
IL_6CA:
this.enum3_0 = Class5.Enum3.const_12;
return 1;
IL_6D4:
throw new ZlibException(string.Format("Bad state ({0})", this.zlibCodec_0.Message));
}