[Quickfix-developers] enh rqst: config file to expand environment variables

[Andrew M. <mar...@gm...>]

Hello everyone,

IMO it would be nice if there was a syntax for referring to environment
variables in the quickfix config file. Avoid ${varname} since that means
the file won't work with quickfixJ, since that syntax is used to refer to
java properties. What we need is a syntax that works with both languages so
that the quickfix config file is portable between C++ and java
environments. One convention would be to say: ${env:varname}. There are
some java components, like log4j2, which do this.

Sorry to mention java so much on the C++ mailing list but I think
compatibility between the C++ and java implementations is useful. quickfixj
already has the standard java mechanism for referring to properties and it
is possible to set properties to environment variable values on the JVM
command line. But there is nothing for the C++ quickfix. I've come across
the need because I want to use an environment variable to refer to the
pathname of the FIX DD. Having a config file like this is an aid to
automated deployment.

-- 
Regards,

Andrew Marlow
http://www.andrewpetermarlow.co.uk