[PATCH] CSV imperial import

[Dirk Hohndel]

On Tue, Dec 30, 2014 at 05:02:42PM +0200, Miika Turkia wrote:
> These patches allow one to import CSV file in imperial units. It is for the
> pre-configured Subsurface style CSV. I am not sure how sensible this is,
> but this format allows importing more fields than what we have in the
> manual CSV import (and we got a request for this). Thus I thought it might
> be useful.

Definitely. There are a lot of divers afflicted with this insane measuring
system. I usually dive my own HP119, but on most dive trips I get AL80.
And then when the dive base asks me if I want an 11 liter tank or a 15
liter I sadly have to stop and think what that might mean...

> Cylinder size is currently not supported in imperial format as it doesn't
> really make sense without working pressure. And that I doubt anyone will
> record on paper/excel logs. Of course, we could give rough estimates in the
> form of 80 cuft -> 11L, 100 cuft -> 13L (or whatever they happen to
> commonly be).

There are way too many permutations. LP85 could be 2400 psi or 2640 psi.
But you can cheat (just document it):
ALxxx -> xxx cuft at 3000 psi
LPxxx -> xxx cuft at 2400 psi (people with plus-rated cylinders need to manually fix things)
HPxxx -> xxx cuft at 3440 psi

This should work well for MOST people and MOST cylinders. And the others
are no worse off than what we have today.

> I was wondering if it would make sense to implement exporting the CSV files
> in imperial units as well. Opinions?

I know we'll get a request for it sooner or later :-(

/D