Source code Questions

[Jeff.Kelly@xxxxxxxxxxx]

Hi Folks,

I am currently working on a java port for rdesktop which is a pita in 
its own right anyway. Although the c-source is very easy to read and 
comprehend if you have read the standard documents beforehand i am know 
stuck in mcs.h: 

Lines 44 ff.

in_uint8(s, len); //read length

if (len & 0x80) {     // if len = 0x80?
	len &= ~0x80; // len=0?
	*length = 0;

	while (len--) //?
		next_be(s, *length); //?
} else

If i understand it correctly then it is first checked wether len=128 
(0x80 Hex) because len & 0x80 is only true if len=0x80. 
len &=~0x80 is the same as len=0 because a and (not a) is always false 
so 0x80&~0x80=00000000. 

But I do not understand how the rest of the statement should work. 
Could someone please clarify what while(len--) next_be(s, *length); 
should do? 

Thanks

Christian