does ossreader suppport regex?

I have csvfile under OSS, that i want to write to OTS. I cannot use default delimiter for separating columns as each row has column-wise JSON string, is there anyway i can make it work. I guess i can split column-wise JSON, if i can match by regex.

sample data:

f0000743-3135-4fac-92d8-2265dbcf5d88,12,{"EventType":"article:created","RawData":"{\"meta\":{\"user\":\"5ceba48db7dfbf000177b27e\",\"created\":\"2010-01-28T16:00:00.000Z\",\"inputted\":\"2010-01-28T20:02:12.000Z\"}}","Data":null,"Timestamp":"2019-12-11T15:29:28.84297294Z","AggregateType":"article","AggregateID":"f0000743-3135-4fac-92d8-2265dbcf5d88","Version":1,"Branch":"current"},{"EventType":"article:provider_updated","RawData":"{\"meta\":{\"user\":\"5ceba48db7dfbf000177b27e\",\"updated\":\"2010-01-28T16:00:00.000Z\",\"provider\":\"SCMP\"}}","Data":null,"Timestamp":"2019-12-11T15:29:28.842973852Z","AggregateType":"article","AggregateID":"f0000743-3135-4fac-92d8-2265dbcf5d88","Version":2,"Branch":"current"},{"EventType":"article:publication_type_updated","RawData":"{\"meta\":{\"user\":\"5ceba48db7dfbf000177b27e\",\"updated\":\"2010-01-28T16:00:00.000Z\",\"publicationType\":\"print\"}}","Data":null,"Timestamp":"2019-12-11T15:29:28.842974592Z","AggregateType":"article","AggregateID":"f0000743-3135-4fac-92d8-2265dbcf5d88","Version":3,"Branch":"current"},{"EventType":"article:merlin_id_updated","RawData":"{\"meta\":{\"user\":\"5ceba48db7dfbf000177b27e\",\"updated\":\"2010-01-28T20:02:12.000Z\",\"merlinID\":13571301}}","Data":null,"Timestamp":"2019-12-11T15:29:28.886009117Z","AggregateType":"article","AggregateID":"f0000743-3135-4fac-92d8-2265dbcf5d88","Version":4,"Branch":"current"},{"EventType":"article:has_copyright_updated","RawData":"{\"meta\":{\"user\":\"5ceba48db7dfbf000177b27e\",\"updated\":\"2010-01-28T20:02:12.000Z\",\"hasCopyright\":true}}","Data":null,"Timestamp":"2019-12-11T15:29:28.886010459Z","AggregateType":"article","AggregateID":"f0000743-3135-4fac-92d8-2265dbcf5d88","Version":5,"Branch":"current"},{"EventType":"article:creator_categories_set","RawData":"{\"meta\":{\"user\":\"5ceba48db7dfbf000177b27e\",\"updated\":\"2010-01-28T20:02:12.000Z\",\"creatorCategories\":[\"staff\"]}}","Data":null,"Timestamp":"2019-12-11T15:29:28.886012933Z","AggregateType":"article","AggregateID":"f0000743-3135-4fac-92d8-2265dbcf5d88","Version":6,"Branch":"current"}

Above sample has total 8 columns, 6 out of which are in JSON, need to match it and write under OTS

The issue names the OSS reader and OTS writer and provides a sample CSV row; start by checking the reader’s delimiter and parsing entry point and how the writer receives columns. Define whether regex or another custom parsing mode is supported, then verify the sample produces eight columns with six JSON values before writing to OTS.

Written by the indexing model from the issue text.