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Code Issues Releases Wiki Activity

Exception safety in: general exporting routines

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This commit is contained in:
Paul Licameli 2016-12-24 12:37:46 -05:00
parent 464828d88f
commit 48459404a5
3 changed files with 69 additions and 53 deletions
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34
src/Project.cpp
View File

@ -3914,6 +3914,23 @@ bool AudacityProject::Save(bool overwrite /* = true */ ,
pWaveTrack = (WaveTrack*)pTrack;
pSavedTrackList.Add(mTrackFactory->DuplicateWaveTrack(*pWaveTrack));
}
auto cleanup = finally( [&] {
// Restore the saved track states and clean up.
TrackListIterator savedTrackIter(&pSavedTrackList);
Track *pSavedTrack;
for (pTrack = iter.First(), pSavedTrack = savedTrackIter.First();
((pTrack != NULL) && (pSavedTrack != NULL));
pTrack = iter.Next(), pSavedTrack = savedTrackIter.Next())
{
pWaveTrack = (WaveTrack*)pTrack;
pWaveTrack->SetSelected(pSavedTrack->GetSelected());
pWaveTrack->SetMute(pSavedTrack->GetMute());
pWaveTrack->SetSolo(pSavedTrack->GetSolo());
pWaveTrack->SetGain(((WaveTrack*)pSavedTrack)->GetGain());
pWaveTrack->SetPan(((WaveTrack*)pSavedTrack)->GetPan());
}
} );
if (numWaveTracks == 0)
// Nothing to save compressed => success. Delete the copies and go.
@ -3923,6 +3940,7 @@ bool AudacityProject::Save(bool overwrite /* = true */ ,
for (pTrack = iter.First(); pTrack != NULL; pTrack = iter.Next())
{
pWaveTrack = (WaveTrack*)pTrack;
pWaveTrack->SetSelected(false);
pWaveTrack->SetMute(false);
pWaveTrack->SetSolo(false);
@ -3968,22 +3986,6 @@ bool AudacityProject::Save(bool overwrite /* = true */ ,
}
}
// Restore the saved track states and clean up.
TrackListIterator savedTrackIter(&pSavedTrackList);
Track *pSavedTrack;
for (pTrack = iter.First(), pSavedTrack = savedTrackIter.First();
((pTrack != NULL) && (pSavedTrack != NULL));
pTrack = iter.Next(), pSavedTrack = savedTrackIter.Next())
{
pWaveTrack = (WaveTrack*)pTrack;
pWaveTrack->SetSelected(pSavedTrack->GetSelected());
pWaveTrack->SetMute(pSavedTrack->GetMute());
pWaveTrack->SetSolo(pSavedTrack->GetSolo());
pWaveTrack->SetGain(((WaveTrack*)pSavedTrack)->GetGain());
pWaveTrack->SetPan(((WaveTrack*)pSavedTrack)->GetPan());
}
return bSuccess;
}
#endif

32
src/export/Export.cpp
View File

@ -827,7 +827,22 @@ bool Exporter::ExportTracks()
::wxRenameFile(mActualName.GetFullPath(), mFilename.GetFullPath());
}
auto success = mPlugins[mFormat]->Export(mProject,
bool success = false;
auto cleanup = finally( [&] {
if (mActualName != mFilename) {
// Remove backup
if ( success )
::wxRemoveFile(mFilename.GetFullPath());
else {
// Restore original, if needed
::wxRemoveFile(mActualName.GetFullPath());
::wxRenameFile(mFilename.GetFullPath(), mActualName.GetFullPath());
}
}
} );
auto result = mPlugins[mFormat]->Export(mProject,
mChannels,
mActualName.GetFullPath(),
mSelectedOnly,
@ -837,19 +852,10 @@ bool Exporter::ExportTracks()
NULL,
mSubFormat);
if (mActualName != mFilename) {
// Remove backup
if (success == ProgressResult::Success || success == ProgressResult::Stopped) {
::wxRemoveFile(mFilename.GetFullPath());
}
else {
// Restore original, if needed
::wxRemoveFile(mActualName.GetFullPath());
::wxRenameFile(mFilename.GetFullPath(), mActualName.GetFullPath());
}
}
success =
result == ProgressResult::Success || result == ProgressResult::Stopped;
return (success == ProgressResult::Success || success == ProgressResult::Stopped);
return success;
}
void Exporter::CreateUserPaneCallback(wxWindow *parent, wxUIntPtr userdata)

44
src/export/ExportMultiple.cpp
View File

@ -566,21 +566,11 @@ void ExportMultiple::OnExport(wxCommandEvent& WXUNUSED(event))
}
// bool overwrite = mOverwrite->GetValue();
ProgressResult ok;
ProgressResult ok = ProgressResult::Failed;
mExported.Empty();
if (mLabel->GetValue()) {
ok = ExportMultipleByLabel(mByName->GetValue() || mByNumberAndName->GetValue(),
mPrefix->GetValue(),
mByNumberAndName->GetValue());
}
else {
ok = ExportMultipleByTrack(mByName->GetValue() || mByNumberAndName->GetValue(),
mPrefix->GetValue(),
mByNumberAndName->GetValue());
}
// Give 'em the result
auto cleanup = finally( [&]
{
wxString msg;
msg.Printf(
@ -598,12 +588,26 @@ void ExportMultiple::OnExport(wxCommandEvent& WXUNUSED(event))
FileList += mExported[i];
FileList += '\n';
}
CallAfter( [=] {
// This results dialog is a child of this dialog.
HelpSystem::ShowInfoDialog( this,
_("Export Multiple"),
msg,
FileList,
450,400);
} );
} );
if (mLabel->GetValue()) {
ok = ExportMultipleByLabel(mByName->GetValue() || mByNumberAndName->GetValue(),
mPrefix->GetValue(),
mByNumberAndName->GetValue());
}
else {
ok = ExportMultipleByTrack(mByName->GetValue() || mByNumberAndName->GetValue(),
mPrefix->GetValue(),
mByNumberAndName->GetValue());
}
if (ok == ProgressResult::Success || ok == ProgressResult::Stopped) {
@ -797,6 +801,12 @@ ProgressResult ExportMultiple::ExportMultipleByTrack(bool byName,
}
}
auto cleanup = finally( [&] {
// Restore the selection states
for (auto pTrack : selected)
pTrack->SetSelected(true);
} );
/* Examine all tracks in turn, collecting export information */
for (tr = iter.First(mTracks); tr != NULL; tr = iter.Next()) {
@ -932,10 +942,6 @@ ProgressResult ExportMultiple::ExportMultipleByTrack(bool byName,
}
// Restore the selection states
for (auto pTrack : selected)
pTrack->SetSelected(true);
return ok ;
}
@ -950,8 +956,10 @@ ProgressResult ExportMultiple::DoExport(unsigned channels,
wxLogDebug(wxT("Doing multiple Export: File name \"%s\""), (inName.GetFullName()).c_str());
wxLogDebug(wxT("Channels: %i, Start: %lf, End: %lf "), channels, t0, t1);
if (selectedOnly) wxLogDebug(wxT("Selected Region Only"));
else wxLogDebug(wxT("Whole Project"));
if (selectedOnly)
wxLogDebug(wxT("Selected Region Only"));
else
wxLogDebug(wxT("Whole Project"));
if (mOverwrite->GetValue()) {
// Make sure we don't overwrite (corrupt) alias files