// Token: 0x060016BA RID: 5818 RVA: 0x00075494 File Offset: 0x00073694
public int GetSymbol(SimpleZip.StreamManipulator A_1)
{
int num;
if ((num = A_1.PeekBits(9)) >= 0)
{
int num2;
if ((num2 = (int)this.tree[num]) >= 0)
{
A_1.DropBits(num2 & 15);
return(num2 >> 4);
}
int num3 = -(num2 >> 4);
int num4 = num2 & 15;
if ((num = A_1.PeekBits(num4)) >= 0)
{
num2 = (int)this.tree[num3 | num >> 9];
A_1.DropBits(num2 & 15);
return(num2 >> 4);
}
int availableBits = A_1.get_AvailableBits();
num = A_1.PeekBits(availableBits);
num2 = (int)this.tree[num3 | num >> 9];
if ((num2 & 15) <= availableBits)
{
A_1.DropBits(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
else
{
int availableBits2 = A_1.get_AvailableBits();
num = A_1.PeekBits(availableBits2);
int num2 = (int)this.tree[num];
if (num2 >= 0 && (num2 & 15) <= availableBits2)
{
A_1.DropBits(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
}
// Token: 0x060002E4 RID: 740 RVA: 0x00028E94 File Offset: 0x00027094
public int GetSymbol(SimpleZip.StreamManipulator streamManipulator_0)
{
int num;
if ((num = streamManipulator_0.PeekBits(9)) >= 0)
{
int num2;
if ((num2 = (int)this.tree[num]) >= 0)
{
streamManipulator_0.DropBits(num2 & 15);
return(num2 >> 4);
}
int num3 = -(num2 >> 4);
int int_ = num2 & 15;
if ((num = streamManipulator_0.PeekBits(int_)) >= 0)
{
num2 = (int)this.tree[num3 | num >> 9];
streamManipulator_0.DropBits(num2 & 15);
return(num2 >> 4);
}
int availableBits = streamManipulator_0.AvailableBits;
num = streamManipulator_0.PeekBits(availableBits);
num2 = (int)this.tree[num3 | num >> 9];
if ((num2 & 15) <= availableBits)
{
streamManipulator_0.DropBits(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
else
{
int availableBits2 = streamManipulator_0.AvailableBits;
num = streamManipulator_0.PeekBits(availableBits2);
int num2 = (int)this.tree[num];
if (num2 >= 0 && (num2 & 15) <= availableBits2)
{
streamManipulator_0.DropBits(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
}
// Token: 0x060002E6 RID: 742 RVA: 0x00028F6C File Offset: 0x0002716C
public bool Decode(SimpleZip.StreamManipulator streamManipulator_0)
{
for (;;)
{
switch (this.mode)
{
case 0:
this.lnum = streamManipulator_0.PeekBits(5);
if (this.lnum >= 0)
{
this.lnum += 257;
streamManipulator_0.DropBits(5);
this.mode = 1;
goto IL_1E0;
}
return(false);
case 1:
goto IL_1E0;
case 2:
goto IL_192;
case 3:
goto IL_159;
case 4:
break;
case 5:
goto IL_2A;
default:
continue;
}
IL_E4:
int symbol;
while (((symbol = this.blTree.GetSymbol(streamManipulator_0)) & -16) == 0)
{
byte[] array = this.litdistLens;
int num = this.ptr;
this.ptr = num + 1;
array[num] = (this.lastLen = (byte)symbol);
if (this.ptr == this.num)
{
return(true);
}
}
if (symbol >= 0)
{
if (symbol >= 17)
{
this.lastLen = 0;
}
this.repSymbol = symbol - 16;
this.mode = 5;
goto IL_2A;
}
return(false);
IL_159:
while (this.ptr < this.blnum)
{
int num2 = streamManipulator_0.PeekBits(3);
if (num2 < 0)
{
return(false);
}
streamManipulator_0.DropBits(3);
this.blLens[SimpleZip.InflaterDynHeader.BL_ORDER[this.ptr]] = (byte)num2;
this.ptr++;
}
this.blTree = new SimpleZip.InflaterHuffmanTree(this.blLens);
this.blLens = null;
this.ptr = 0;
this.mode = 4;
goto IL_E4;
IL_2A:
int int_ = SimpleZip.InflaterDynHeader.repBits[this.repSymbol];
int num3 = streamManipulator_0.PeekBits(int_);
if (num3 < 0)
{
return(false);
}
streamManipulator_0.DropBits(int_);
num3 += SimpleZip.InflaterDynHeader.repMin[this.repSymbol];
while (num3-- > 0)
{
byte[] array2 = this.litdistLens;
int num = this.ptr;
this.ptr = num + 1;
array2[num] = this.lastLen;
}
if (this.ptr == this.num)
{
break;
}
this.mode = 4;
continue;
IL_192:
this.blnum = streamManipulator_0.PeekBits(4);
if (this.blnum >= 0)
{
this.blnum += 4;
streamManipulator_0.DropBits(4);
this.blLens = new byte[19];
this.ptr = 0;
this.mode = 3;
goto IL_159;
}
return(false);
IL_1E0:
this.dnum = streamManipulator_0.PeekBits(5);
if (this.dnum >= 0)
{
this.dnum++;
streamManipulator_0.DropBits(5);
this.num = this.lnum + this.dnum;
this.litdistLens = new byte[this.num];
this.mode = 2;
goto IL_192;
}
return(false);
}
return(true);
}
// Token: 0x060016BC RID: 5820 RVA: 0x00075588 File Offset: 0x00073788
public bool Decode(SimpleZip.StreamManipulator A_1)
{
for (;;)
{
switch (this.mode)
{
case 0:
this.lnum = A_1.PeekBits(5);
if (this.lnum < 0)
{
return(false);
}
this.lnum += 257;
A_1.DropBits(5);
this.mode = 1;
goto IL_62;
case 1:
goto IL_62;
case 2:
goto IL_BD;
case 3:
break;
case 4:
goto IL_1B9;
case 5:
goto IL_1F5;
default:
continue;
}
IL_148:
while (this.ptr < this.blnum)
{
int num = A_1.PeekBits(3);
if (num < 0)
{
return(false);
}
A_1.DropBits(3);
this.blLens[SimpleZip.InflaterDynHeader.BL_ORDER[this.ptr]] = (byte)num;
this.ptr++;
}
this.blTree = new SimpleZip.InflaterHuffmanTree(this.blLens);
this.blLens = null;
this.ptr = 0;
this.mode = 4;
IL_1B9:
int symbol;
while (((symbol = this.blTree.GetSymbol(A_1)) & -16) == 0)
{
byte[] array = this.litdistLens;
int num2 = this.ptr;
this.ptr = num2 + 1;
array[num2] = (this.lastLen = (byte)symbol);
if (this.ptr == this.num)
{
return(true);
}
}
if (symbol < 0)
{
return(false);
}
if (symbol >= 17)
{
this.lastLen = 0;
}
this.repSymbol = symbol - 16;
this.mode = 5;
IL_1F5:
int num3 = SimpleZip.InflaterDynHeader.repBits[this.repSymbol];
int num4 = A_1.PeekBits(num3);
if (num4 < 0)
{
return(false);
}
A_1.DropBits(num3);
num4 += SimpleZip.InflaterDynHeader.repMin[this.repSymbol];
while (num4-- > 0)
{
byte[] array2 = this.litdistLens;
int num2 = this.ptr;
this.ptr = num2 + 1;
array2[num2] = this.lastLen;
}
if (this.ptr == this.num)
{
return(true);
}
this.mode = 4;
continue;
IL_BD:
this.blnum = A_1.PeekBits(4);
if (this.blnum < 0)
{
return(false);
}
this.blnum += 4;
A_1.DropBits(4);
this.blLens = new byte[19];
this.ptr = 0;
this.mode = 3;
goto IL_148;
IL_62:
this.dnum = A_1.PeekBits(5);
if (this.dnum < 0)
{
return(false);
}
this.dnum++;
A_1.DropBits(5);
this.num = this.lnum + this.dnum;
this.litdistLens = new byte[this.num];
this.mode = 2;
goto IL_BD;
}
return(false);
}
