[erlang-questions] Erlang term to ASCII
Fri Feb 7 19:17:55 CET 2014
I have 2 production systems, one Erlang and one not, both maintaining
copies of a large, deeply-nested Erlang data structure. I need to set up a
monitoring script to confirm that both systems are holding identical copies
of the data structure.
The non-Erlang system is holding an ASCII rendering of the data structure.
Computing an MD5 sum of this string is easy. If I can get the Erlang
system to convert its data structure to a string, I can have it compute an
MD5 sum as well and the monitoring is simply a matter of comparing hashes.
I'm stuck on the process of converting the Erlang term to a string.
Str = io_lib:format("~p", [Data])
gives me what I want, except that it includes newlines and indentation that
I can't expect the non-Erlang system to have.
Str = io_lib:format("~w", [Data])
eliminates the newlines and indentation but renders the textual components
of Data as lists of integers, guaranteeing the result won't match the
So the question is, how do I get a "~p"-style rendering of an
arbitrarily-large Erlang term *without* newlines and indentation?
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