I have pretty much finished this up and will be committing
what I have.
- created cr_extension_mime_type_map ( extension pk, mimetype ref cr_mime_types);
- added a reasonably complete set of mime types and
extension mime type mappings.
- Added ad_proc cr_filename_to_mime_type { -create:boolean filename} which will return a mime type and create the mime type if needed (including creating the extension -> mime type map)
- Added ad_proc cr_create_mime_type { -extension -mime_type -description }
- removed *_maybe_create_mime_type and use the new api.
On thing I did was add a mapping for a lot of the common code
extensions so that they map to text/plain. This means when you pull them down from file storage they will be displayed rather than saved to disk. (This might not be right for everyone but I think it's a reasonable thing to do).
the only big issue outstanding is that I am not sure what I should do on upgrade scripts. I guess create the mime types
that don't already exist and populate the extension mapping table with a preference for existing extensions, but I also
fixed some that were wrong (or out of date) in the original
data. I guess we just let those go...
