Refactor inline in gather to be callable by other flowcbs

[andreleblanc11]

Currently, inline and inlineEncoding logic is built-in the file gather, flowcb/gather/file.py. It would be nice to have this logic be callable by other flowcbs.

This would be especially useful for the AM server. We currently have our own code in the AM server to determine the character encoding. It is very similar to what we already have in the file gather.

What would need to be done

• Separate the inline* logic from post_file method in flowcb/gather/file.py. Would be good to place new method under __init__
• For AM
  • Call this new method from the code.

[petersilva]

The file logic covers text which is always utf-8 and if it isn't then it's binary.
It doesn't permit iso-8859-1 encoding. The default value is "guess" . so when it a file in iso-8859-1 with french accents in it is received it will:

• try to interpret it as utf-8, fail
• encode it as base64 instead.

So the data will still be sent with fidelity, you just won't be able to read the data in the content (meaning the base64 encoding isn't human readable.)