i'm trying to use json-encode from the purest_json library to create config files for the IEM AllRADecoder. now it might be a questionable endeavor to do this with Pd in general - but i'd like to see if it's possible anyway.

the aim is to create a file like https://plugins.iem.at/allradecoder/layoutWithAdditionalImaginaryLoudspeakers.json

... what i have so far works up until 10 speakers with some test data. but then, the symbol obviously gets too long and i get unnecessary escapings and the last parts of the data look like this:

\"Channel\":11\\,*"}

any ideas on how to solve this?

here's the patch.
test-json-encode.pd (ATTENTION: this writes a test.json file on bang in the patch directory)

responding to myself here ... it's possible to iteratively append data to a top-level array with purest_json (which avoids the restriction to symbols of MAXPDSTRING size).

that's not possible for nested keys though (which is a requirement in my case). i changed the purest_json code now so that i can add to nested keys via messages like array LoudspeakerLayouts.Loudspeakers $1. not sure if that's the "right" way and i'd still be curious if other people see better options in Pd for it!