Ohh, stream buffer(?) - aka indentation

Hi All,

I'm back (sort of).  I am thinking about creating a special stream-thing
for
program execution tracing.  Can be good for demonstration and to
understand
why/how an algorithm brings a certain result. (I have made the Rexx PARSER
VAR command work in C++, with the standard algorithm, and sometimes it
brings surprising results.)

One of the many things I would like to sup****t in this tracing stream-like
thing is indentation levels.  So if I enter a function (or print the
content
of a container) I would get the inside 2 spaces indented, and so on, if I
call functions from this one or my container has another container as a
member etc.  So the indentation level grows as I go "inside" and shrinks
as
I go outside.

Since I want my stream to work on top of any existing ostream derivative,
the indentation sup****t should be a "wrapper" of some kind.  And here
comes
the dilemma: wrap what?  Wrap the ostream (pointer)?  Or wrap the stream
buffer?  Is this kind of indentation formatting (so it should go to the
ostream) or something else?

I know many of you guys have working experience in fiddling with standard
streams, so I hope you can point me into the right direction.

TIA,
ww (Attila)


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