My opinion is to stick with M4. Where's the added value in re-implementing a small subset of M4's capability into OpenSIPs? I would rather that development effort be directed toward enhancing OpenSIPs even more.
Leaning m4 can make the management of multiple configurations a breeze -- I support four different environments (development, QA, pre-production and production) across 5 geo-redundant data centers all with a single .m4 file. The use of m4 has _greatly_ simplifies the logic that I have to maintain. After learning m4, you can apply that knowledge to other projects (code generators). Granted, the quoting in m4 takes a bit getting used to but I feel that any sufficiently powerful macro language would have to have something similar. If not, it wouldn't be sufficiently powerful enough for my uses. Thanks From: [email protected] [mailto:[email protected]] On Behalf Of Bogdan-Andrei Iancu Sent: Tuesday, April 10, 2012 10:50 AM To: [email protected] Subject: [OpenSIPS-Users] RFC: text pre-processing in OpenSIPS cfg file Hi, I'm bringing here a discussion started on devel list, as I would like to get more opinions on the matter. The discussion started around the decision if makes sense to have MACRO substitution (as text pre-processing) directly in OpenSIPS, considering that right now M4 is heavenly used for this (as additional tool to opensips). So, the debate was : have built-in text pre-processing versus using M4 as text processor Pros for M4: - no effort to develop extra stuff - just install M4 - can do really complex things (more than only macros, ifdef, include, etc) - you can use it or not - easy to integrate with start / stop scripts Against for M4: - need to be installed and integrated - you may have a mismatch for the line number (if errors reported in cfg) between the .m4 file and .cfg file Pros for buit-in: - you do no need to install M4 at all (everything comes packet) - you may get accurate reporting on errors (for line in cfg) Against for M4: - more devel work to re-implement macros, ifdef, etc Now, I would like to get your opinions on that (you as opensips users), to see if we stick to using M4 for cfg pre-processing or there is a real need to have this functionality as built-in. Thanks and regards, Bogdan -- Bogdan-Andrei Iancu OpenSIPS Founder and Developer http://www.opensips-solutions.com
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