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core: C++-ify statistics.c

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The old code was wild: For the yearly statistics it would allocate
one entry per dive in the log. Of course, it would also leak
C-style strings.

Convert the whole thing to somewhat idiomatic C++.

Somewhat wasted work, because I'd like to convert the whole thing
to the new statistics code. But let's finish the conversion to C++
first.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2024-05-01 23:16:00 +02:00 • committed by bstoeger
parent 84219641de
commit 1daa4f0584
12 changed files with 496 additions and 582 deletions
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3
desktop-widgets/tab-widgets/TabDiveInformation.cpp
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@ -124,7 +124,7 @@ void TabDiveInformation::updateProfile()
ui->maximumDepthText->setText(get_depth_string(currentDive->maxdepth, true));
ui->averageDepthText->setText(get_depth_string(currentDive->meandepth, true));
volume_t *gases = get_gas_used(currentDive);
std::vector<volume_t> gases = get_gas_used(currentDive);
QString volumes;
std::vector<int> mean(currentDive->cylinders.nr), duration(currentDive->cylinders.nr);
struct divecomputer *currentdc = parent.getCurrentDC();
@ -148,7 +148,6 @@ void TabDiveInformation::updateProfile()
SACs.append(get_volume_string(sac, true).append(tr("/min")));
}
}
free(gases);
ui->gasUsedText->setText(volumes);
ui->oxygenHeliumText->setText(gaslist);