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Import: split process_imported_dives() function

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Split the process_imported_dives() function in two:
1) process_imported_dives() processes the dives and generates
   a list of dives and trips to be added and removed.
2) add_imported_dives() calls process_imported_dives() and
   does the actual removal / addition of dives and trips.

The goal is to split preparation and actual work, to
make dive import undo-able.

The code adds extra checks to never merge into the same
dive twice, as this would lead to a double-free() bug.
This should in principle never happen, as dives that
compare equal according to is_same_dive() are merged
in the imported-dives list, but perhaps in some pathologival
corner-cases is_same_dive() turns out to be non-transitive.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2018-12-23 22:08:00 +01:00 • committed by Dirk Hohndel
parent fd196f143a
commit 0249e12589
11 changed files with 215 additions and 200 deletions
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4
desktop-widgets/downloadfromdivecomputer.cpp
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@ -525,9 +525,9 @@ void DownloadFromDCWidget::on_ok_clicked()
// remember the last downloaded dive (on most dive computers this will be the chronologically
// first new dive) and select it again after processing all the dives
int uniqId = table->dives[table->nr - 1]->id;
process_imported_dives(table, trips, preferDownloaded(), true, false);
add_imported_dives(table, trips, preferDownloaded(), true, false);
Command::clear();
// after process_imported_dives does any merging or resorting needed, we need
// after add_imported_dives does any merging or resorting needed, we need
// to recreate the model for the dive list so we can select the newest dive
MainWindow::instance()->recreateDiveList();
int idx = get_idx_by_uniq_id(uniqId);