private bool method_1()
{
var num = _class1870.method_0(16);
if (num < 0)
{
return(false);
}
_class1870.method_1(16);
num = ((num << 8 | num >> 8) & 65535);
if (num % 31 != 0)
{
throw new SharpZipBaseException("Header checksum illegal");
}
if ((num & 3840) != 2048)
{
throw new SharpZipBaseException("Compression Method unknown");
}
if ((num & 32) == 0)
{
_int4 = 2;
}
else
{
_int4 = 1;
_int6 = 32;
}
return(true);
}
public int method_1(Class187 class187_0)
{
int num;
if ((num = class187_0.method_0(9)) >= 0)
{
int num2;
if ((num2 = (int)this.short_0[num]) >= 0)
{
class187_0.method_1(num2 & 15);
return(num2 >> 4);
}
int num3 = -(num2 >> 4);
int int_ = num2 & 15;
if ((num = class187_0.method_0(int_)) >= 0)
{
num2 = (int)this.short_0[num3 | num >> 9];
class187_0.method_1(num2 & 15);
return(num2 >> 4);
}
int num4 = class187_0.method_2();
num = class187_0.method_0(num4);
num2 = (int)this.short_0[num3 | num >> 9];
if ((num2 & 15) <= num4)
{
class187_0.method_1(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
else
{
int num5 = class187_0.method_2();
num = class187_0.method_0(num5);
int num2 = (int)this.short_0[num];
if (num2 >= 0 && (num2 & 15) <= num5)
{
class187_0.method_1(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
}
public int method_1(Class187 class1870)
{
int num;
if ((num = class1870.method_0(9)) >= 0)
{
int num2;
if ((num2 = _short0[num]) >= 0)
{
class1870.method_1(num2 & 15);
return(num2 >> 4);
}
var num3 = -(num2 >> 4);
var int_ = num2 & 15;
if ((num = class1870.method_0(int_)) >= 0)
{
num2 = _short0[num3 | num >> 9];
class1870.method_1(num2 & 15);
return(num2 >> 4);
}
var num4 = class1870.method_2();
num = class1870.method_0(num4);
num2 = _short0[num3 | num >> 9];
if ((num2 & 15) <= num4)
{
class1870.method_1(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
else
{
var num5 = class1870.method_2();
num = class1870.method_0(num5);
int num2 = _short0[num];
if (num2 >= 0 && (num2 & 15) <= num5)
{
class1870.method_1(num2 & 15);
return(num2 >> 4);
}
return(-1);
}
}
private void method_3(Class187 A_0)
{
A_0.method_1(0x10);
A_0.method_3(0x10);
A_0.method_5(0x80);
A_0.method_7(20);
A_0.method_9(BookmarkStart.b("爲瀴搶", 13));
A_0.method_11(BookmarkStart.b("瀲崴嘶倸唺吼儾♀โ⩄⍆ⱈࡊཌ", 13));
A_0.method_13(BookmarkStart.b("怲紴瘶࠸", 13));
}
public bool method_0(Class187 class1870)
{
while (true)
{
switch (_int3)
{
case 0:
_int4 = class1870.method_0(5);
if (_int4 >= 0)
{
_int4 += 257;
class1870.method_1(5);
_int3 = 1;
goto IL_1FD;
}
return(false);
case 1:
goto IL_1FD;
case 2:
goto IL_1AF;
case 3:
goto IL_176;
case 4:
break;
case 5:
goto IL_2C;
default:
continue;
}
IL_F4:
int num;
while (((num = _class1970.method_1(class1870)) & -16) == 0)
{
_byte1[_int9++] = (_byte2 = (byte)num);
if (_int9 == _int7)
{
return(true);
}
}
if (num >= 0)
{
if (num >= 17)
{
_byte2 = 0;
}
else if (_int9 == 0)
{
goto IL_2A6;
}
_int8 = num - 16;
_int3 = 5;
goto IL_2C;
}
return(false);
IL_176:
while (_int9 < _int6)
{
var num2 = class1870.method_0(3);
if (num2 < 0)
{
return(false);
}
class1870.method_1(3);
_byte0[Int2[_int9]] = (byte)num2;
_int9++;
}
_class1970 = new Class197(_byte0);
_byte0 = null;
_int9 = 0;
_int3 = 4;
goto IL_F4;
IL_2C:
var num3 = Int1[_int8];
var num4 = class1870.method_0(num3);
if (num4 < 0)
{
return(false);
}
class1870.method_1(num3);
num4 += Int0[_int8];
if (_int9 + num4 > _int7)
{
break;
}
while (num4-- > 0)
{
_byte1[_int9++] = _byte2;
}
if (_int9 == _int7)
{
return(true);
}
_int3 = 4;
continue;
IL_1AF:
_int6 = class1870.method_0(4);
if (_int6 >= 0)
{
_int6 += 4;
class1870.method_1(4);
_byte0 = new byte[19];
_int9 = 0;
_int3 = 3;
goto IL_176;
}
return(false);
IL_1FD:
_int5 = class1870.method_0(5);
if (_int5 >= 0)
{
_int5++;
class1870.method_1(5);
_int7 = _int4 + _int5;
_byte1 = new byte[_int7];
_int3 = 2;
goto IL_1AF;
}
return(false);
}
throw new SharpZipBaseException();
IL_2A6:
throw new SharpZipBaseException();
}
public bool method_0(Class187 class187_0)
{
while (true)
{
switch (this.int_3)
{
case 0:
this.int_4 = class187_0.method_0(5);
if (this.int_4 >= 0)
{
this.int_4 += 257;
class187_0.method_1(5);
this.int_3 = 1;
goto IL_1FD;
}
return(false);
case 1:
goto IL_1FD;
case 2:
goto IL_1AF;
case 3:
goto IL_176;
case 4:
break;
case 5:
goto IL_2C;
default:
continue;
}
IL_F4:
int num;
while (((num = this.class197_0.method_1(class187_0)) & -16) == 0)
{
this.byte_1[this.int_9++] = (this.byte_2 = (byte)num);
if (this.int_9 == this.int_7)
{
return(true);
}
}
if (num >= 0)
{
if (num >= 17)
{
this.byte_2 = 0;
}
else if (this.int_9 == 0)
{
goto IL_2A6;
}
this.int_8 = num - 16;
this.int_3 = 5;
goto IL_2C;
}
return(false);
IL_176:
while (this.int_9 < this.int_6)
{
int num2 = class187_0.method_0(3);
if (num2 < 0)
{
return(false);
}
class187_0.method_1(3);
this.byte_0[Class198.int_2[this.int_9]] = (byte)num2;
this.int_9++;
}
this.class197_0 = new Class197(this.byte_0);
this.byte_0 = null;
this.int_9 = 0;
this.int_3 = 4;
goto IL_F4;
IL_2C:
int num3 = Class198.int_1[this.int_8];
int num4 = class187_0.method_0(num3);
if (num4 < 0)
{
return(false);
}
class187_0.method_1(num3);
num4 += Class198.int_0[this.int_8];
if (this.int_9 + num4 > this.int_7)
{
break;
}
while (num4-- > 0)
{
this.byte_1[this.int_9++] = this.byte_2;
}
if (this.int_9 == this.int_7)
{
return(true);
}
this.int_3 = 4;
continue;
IL_1AF:
this.int_6 = class187_0.method_0(4);
if (this.int_6 >= 0)
{
this.int_6 += 4;
class187_0.method_1(4);
this.byte_0 = new byte[19];
this.int_9 = 0;
this.int_3 = 3;
goto IL_176;
}
return(false);
IL_1FD:
this.int_5 = class187_0.method_0(5);
if (this.int_5 >= 0)
{
this.int_5++;
class187_0.method_1(5);
this.int_7 = this.int_4 + this.int_5;
this.byte_1 = new byte[this.int_7];
this.int_3 = 2;
goto IL_1AF;
}
return(false);
}
throw new SharpZipBaseException();
IL_2A6:
throw new SharpZipBaseException();
}