Doing per-dive cylinder start/end pressures is insane, when we can have
up to eight cylinders. The cylinder start/end pressure cannot be per
dive, it needs to be per cylinder.
This makes the save format cleaner too, we have all the cylinder data in
just one place.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Instead of always using three decimal digits, use 1-3 digits. But do
use at least one, even for integer numbers, just because it makes it so
much clearer that we're dealing with potential fractional values.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I don't necessarily want to show three decimal digits when one or two
would do. So prepare for that by using a helper. This doesn't actually
change the printout yet.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I'll want to also add a way to override/set the cylinder type: both
manually by just setting a size in liters, and by picking from some list
of standard cylinder sizes.
For example, it looks like most of my dives are marked as having
12-liter cylinders. That is probably some default from Suunto Dive
Manager, or from whatever Dirk did. It's almost certainly not right for
any of them: as far as I know, the standard cylinders for Lahaina Divers
(which is likely most of the warm water dives) are AL72's for air, and
AL80's for Nitrox.
That would be a 10L and a 11.1L tank respectively, afaik. I don't know
what a 12-liter tank would be or where that size comes from.
Anyway, the LP85+ tank designation for some of the dives looks more
likely: that's one of the common sizes I've used for local dives. So
the size of that thing is much more probably correct.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It was a mistake to save it - and I did it just because other dive
managers did. It's a totally nonsensical measure, and nobody cares.
The only thing that matters is the size of the cylinder, and the
*actual* pressures. Those give actual air consumption numbers, and are
meaningful and unambiguous.
So the "working pressure" for a cylinder is pointless except for two
things:
- if you don't know the actual physical size, you need the "working
pressure" along with the air size (eg "85 cuft") in order to compute
the physical size. So we do use the working pressure on *input* from
systems that report cylinder sizes that way.
- People may well want to know what kind of cylinder they were diving,
and again, you can make a good guess about this from the working
pressure. So saving information like "HP100+" for the cylinder would
be a good thing.
But notice how in neither case do we actually want to save the working
pressure itself. And in fact saving it actually makes the output format
ambiguous: if we give both size and working pressure, what does 'size'
mean? Is it physical size in liters, or air size in cu ft?
So saving working pressure is just wrong. Get rid of it.
I'm going to add some kind of "cylinder description" thing, which we can
save instead (and perhaps guess standard cylinders from input like the
working pressure from dive logs that don't do this sanely - which is all
of them, as far as I can tell).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It never actually triggered anything for me, but any buffered data might
be lost, especially if you force-exit the application after saving a
dive log.
This probably explains a corrupted (truncated) dive file report from
Nathan Samson.
Reported-by: Nathan Samson <https://github.com/nathansamson>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's all calculated anyway, and for the same reason we don't bother even
parsing it at load time, we really shouldn't bother saving it either.
The only thing you can do with that value is "check if the percentages
add up to 100%", and so what?
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Instead of just tracking gasmix, track the size and workng pressure of
the cylinder too.
And use "cylinder" instead of "tank" throughout.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
I think it should be legal xml, but whatever. libxml2 is very unhappy,
and complains when loading - even if I escape them. So let's just
replace the low escape characters with '?'.
The only thing to ever care was my test-case, I suspect.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Let's make it a goal that the XML we output is pretty. That clearly was
never a goal for the Suunto XML, but we can be oh-so-much-better than that.
I still don't love XML, but let's try to make the best of a bad situation,
and take pride in what we do.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Use the "empty element" form for samples that don't have any events
associated with them (and none do, right now). This avoids that
annoying "</sample>" crud.
And output the units in the output helpers, so that you can't forget
them even if you try.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When we see a number like 23.145, we'd better always also see a unit.
It's just good practice. So add 'min' to duration (and use only two
digits for number of seconds), and 'm' to depth.
And write the date in international standard format.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Be more careful with FP conversions, and with the Kelvin<->C offset.
And make sure to use the same names when saving as when parsing.
Now when we save a set of dives, then re-load them, and save again, the
second save image is identical to the first one.
Of course, we don't actually save everything we load, so we still do
lose information when we load and then save the result. But at least we
now don't lose the information that we *do* save.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This just generates another xml file. Don't get me wrong: I still don't
like xml, but this way we can save in the same format we load things
from. Except the save-format is a *lot* cleaner than the abortion that
is Suunto or libdivecomputer xml.
Don't bother with some crazy xml library crap for saving. Just do it!
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
