[gobo-eiffel-develop] indenting text output filter

[Andreas L. <ale...@ra...>]

Hi all:

I have been generating a lot of code over the years. Printing
indentation was always a messy issue. It involved lots of unreadable '%
T's.  I very much liked Eric's approach in gec where you have a tripple
of rouintes (one for increasing indentation, one for decreasing and one
for printing the current level).

I have generalized this approach now for Erl-G into an output filter. It
is a class that you put in front of your actual text output stream. This
class _is_ an outputstream with the two additional public commands of
`indent' and `detent' (better names welcome!) and transparently prints
indentation for every line to a given target output stream.

I have attached the class as it might be useful to others. Eric if you
like it please feel free to include it in Gobo.

Andreas