[DFDL-WG] Review/Feedback wanted on proposal: Data Streaming for base64 and other Layered Transformations

[Mike Beckerle]

We have a great deal of demand for the ability to describe data formats
that include layered transformations - that is, regions within the data
that need to be algorithmically transformed before parsing and after
unparsing.

The IETF data formats make extensive use of line folding, base64, etc. Many
formats allow compressed payloads. All these are examples of "layering"
where a region of the data stream can be identified, algorithmically
transformed, and then subsequently further parsed. (The inverse process for
unparsing obviously.)

Our draft proposal, that we are hoping to implement in Daffodil, is here:

https://cwiki.apache.org/confluence/display/DAFFODIL/Proposal%3A+Data+Streaming+for+Base64+and+other+Layered+Transformations

Any feedback on this is very welcome, and can be addressed to dfdl-wg
mailing list.

Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
www.tresys.com
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