Reading (and ignoring) escape-sequences
Mazen Harake
mazen.harake@REDACTED
Mon Mar 22 13:53:54 CET 2010
Hi list,
Lets say I read 1 char at a time:
l() ->
Chr = io:get_chars('',1),
...
l().
and the person giving me input press ^[[A (UpArrow). This will yield
three loops in my program, one for each of these characters. Well that
is not a problem I can flag for collecting an escape-sequence but there
is another problem.
Say that I want to be able to catch UpArrow but not LeftArrow (or any
other escape-sequence for that matter) I can't start reading the ^[
character and suddenly stop when there is something I don't recognise
because there might be "garbage" which I have to skip (the rest of the
sequence)... and to skip this I have to implement the whole list of
escape-sequences to know how much to skip. Is there any other way to do
this in Erlang? I can't seem to find any facility to read or get
escape-sequences (like UpArrow or whatever).
Did I overlook something or anyone have any tip on how to do this?
/Mazen
---------------------------------------------------
---------------------------------------------------
WE'VE CHANGED NAMES!
Since January 1st 2010 Erlang Training and Consulting Ltd. has become ERLANG SOLUTIONS LTD.
www.erlang-solutions.com
More information about the erlang-questions
mailing list