private static List <RenamePreview> GetPreviewsWithDuplicateNames(IList <RenamePreview> previews, AssetCache assetCache)
{
var assetPreviews = new List <RenamePreview>();
for (int i = 0; i < previews.Count; ++i)
{
var previewForObject = previews[i];
if (previewForObject.ObjectToRename.IsAsset())
{
assetPreviews.Add(previewForObject);
}
}
// Get all the cached file paths, but remove any that are in the preview
// because those names could be different. We want to test that NEW names
// don't collide with existing assets.
HashSet <string> allFinalFilePaths = assetCache.GetAllPathsHashed();
foreach (var assetPreview in assetPreviews)
{
allFinalFilePaths.Remove(assetPreview.OriginalPathToSubAsset);
}
// Now hash the new names and check if they collide with the existing assets
var problemPreviews = new List <RenamePreview>();
var unchangedAssetPreviews = new List <RenamePreview>();
var changedAssetPreviews = new List <RenamePreview>();
// Separate unchangedAssets from changedAsests
foreach (var assetPreview in assetPreviews)
{
var thisObject = assetPreview.ObjectToRename;
var thisResult = assetPreview.RenameResultSequence;
if (thisResult.NewName == thisResult.OriginalName)
{
unchangedAssetPreviews.Add(assetPreview);
}
else
{
changedAssetPreviews.Add(assetPreview);
}
}
// First add all the unchanged results, so that we collide on the
// first time adding new names. This fixes an issue where
// you'd rename one object which now matches a second, but the second gets
// the warning instead of the first.
var previewsSorted = new List <RenamePreview>();
previewsSorted.AddRange(unchangedAssetPreviews);
previewsSorted.AddRange(changedAssetPreviews);
foreach (var renamePreview in previewsSorted)
{
var resultingPath = renamePreview.GetResultingPath();
if (allFinalFilePaths.Contains(resultingPath))
{
problemPreviews.Add(renamePreview);
}
else
{
allFinalFilePaths.Add(resultingPath);
}
}
return(problemPreviews);
}