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Modify the content file sorting algorithm to finish in finite time when encountering circular dependencies

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This commit is contained in:
Evil Eye 2021-11-04 20:41:26 +01:00
parent 2d3c6faec4
commit ad44142dda
1 changed files with 16 additions and 29 deletions
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45
components/contentselector/model/contentmodel.cpp
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@ -504,40 +504,27 @@ QStringList ContentSelectorModel::ContentModel::gameFiles() const
void ContentSelectorModel::ContentModel::sortFiles()
{
//first, sort the model such that all dependencies are ordered upstream (gamefile) first.
bool movedFiles = true;
int fileCount = mFiles.size();
//Dependency sort
//iterate until no sorting of files occurs
while (movedFiles)
int sorted = 0;
//iterate each file, obtaining a reference to its gamefiles list
for(int i = sorted; i < mFiles.size(); ++i)
{
movedFiles = false;
//iterate each file, obtaining a reference to it's gamefiles list
for (int i = 0; i < fileCount; i++)
const QStringList& gameFiles = mFiles.at(i)->gameFiles();
int j = sorted;
for(;j > 0; --j)
{
QModelIndex idx1 = index (i, 0, QModelIndex());
const QStringList &gamefiles = mFiles.at(i)->gameFiles();
//iterate each file after the current file, verifying that none of it's
//dependencies appear.
for (int j = i + 1; j < fileCount; j++)
{
if (gamefiles.contains(mFiles.at(j)->fileName(), Qt::CaseInsensitive)
|| (!mFiles.at(i)->isGameFile() && gamefiles.isEmpty()
&& mFiles.at(j)->fileName().compare("Morrowind.esm", Qt::CaseInsensitive) == 0)) // Hack: implicit dependency on Morrowind.esm for dependency-less files
{
mFiles.move(j, i);
QModelIndex idx2 = index (j, 0, QModelIndex());
emit dataChanged (idx1, idx2);
movedFiles = true;
}
}
if (movedFiles)
const auto file = mFiles.at(j - 1);
if(gameFiles.contains(file->fileName(), Qt::CaseInsensitive)
|| (!mFiles.at(i)->isGameFile() && gameFiles.isEmpty()
&& file->fileName().compare("Morrowind.esm", Qt::CaseInsensitive) == 0)) // Hack: implicit dependency on Morrowind.esm for dependency-less files
break;
}
if(i != j)
{
mFiles.move(i, j);
emit dataChanged(index(i, 0, QModelIndex()), index(j, 0, QModelIndex()));
}
++sorted;
}
}