public static bool AreStreamsEqual(Stream left, Stream right)
{
if (left == null)
{
return(right == null);
}
if (right == null)
{
return(false);
}
if (!left.CanRead || !right.CanRead)
{
throw new NotSupportedException("The streams can't be read for comparison");
}
if (left.Length != right.Length)
{
return(false);
}
int num = (int)left.Length;
left.Position = 0L;
right.Position = 0L;
int i = 0;
int num2 = 0;
byte[] array = new byte[512];
byte[] array2 = new byte[512];
GCHandle gchandle = GCHandle.Alloc(array, GCHandleType.Pinned);
IntPtr left2 = gchandle.AddrOfPinnedObject();
GCHandle gchandle2 = GCHandle.Alloc(array2, GCHandleType.Pinned);
IntPtr right2 = gchandle2.AddrOfPinnedObject();
bool result;
try
{
while (i < num)
{
int num3 = left.Read(array, 0, array.Length);
int num4 = right.Read(array2, 0, array2.Length);
if (num3 != num4)
{
return(false);
}
if (!Utility._MemCmp(left2, right2, (long)num3))
{
return(false);
}
i += num3;
num2 += num4;
}
result = true;
}
finally
{
gchandle.Free();
gchandle2.Free();
}
return(result);
}
public static bool MemCmp(byte[] left, byte[] right, int cb)
{
GCHandle gCHandle = GCHandle.Alloc(left, GCHandleType.Pinned);
IntPtr intPtr = gCHandle.AddrOfPinnedObject();
GCHandle gCHandle1 = GCHandle.Alloc(right, GCHandleType.Pinned);
IntPtr intPtr1 = gCHandle1.AddrOfPinnedObject();
bool flag = Utility._MemCmp(intPtr, intPtr1, (long)cb);
gCHandle.Free();
gCHandle1.Free();
return(flag);
}
public static bool MemCmp(byte[] left, byte[] right, int cb)
{
GCHandle gchandle = GCHandle.Alloc(left, GCHandleType.Pinned);
IntPtr left2 = gchandle.AddrOfPinnedObject();
GCHandle gchandle2 = GCHandle.Alloc(right, GCHandleType.Pinned);
IntPtr right2 = gchandle2.AddrOfPinnedObject();
bool result = Utility._MemCmp(left2, right2, (long)cb);
gchandle.Free();
gchandle2.Free();
return(result);
}
public static bool AreStreamsEqual(Stream left, Stream right)
{
bool flag;
if (left == null)
{
return(right == null);
}
if (right == null)
{
return(false);
}
if (!left.CanRead || !right.CanRead)
{
throw new NotSupportedException("The streams can't be read for comparison");
}
if (left.Length != right.Length)
{
return(false);
}
int length = (int)left.Length;
left.Position = 0L;
right.Position = 0L;
int num = 0;
int num1 = 0;
int num2 = 0;
int num3 = 0;
byte[] numArray = new byte[512];
byte[] numArray1 = new byte[512];
GCHandle gCHandle = GCHandle.Alloc(numArray, GCHandleType.Pinned);
IntPtr intPtr = gCHandle.AddrOfPinnedObject();
GCHandle gCHandle1 = GCHandle.Alloc(numArray1, GCHandleType.Pinned);
IntPtr intPtr1 = gCHandle1.AddrOfPinnedObject();
try
{
while (num < length)
{
num2 = left.Read(numArray, 0, (int)numArray.Length);
num3 = right.Read(numArray1, 0, (int)numArray1.Length);
if (num2 != num3)
{
flag = false;
return(flag);
}
else if (!Utility._MemCmp(intPtr, intPtr1, (long)num2))
{
flag = false;
return(flag);
}
else
{
num += num2;
num1 += num3;
}
}
flag = true;
}
finally
{
gCHandle.Free();
gCHandle1.Free();
}
return(flag);
}