public override bool Execute()
{
log = new MSBuildLog(Log);
// Build the package graph
var packages = GetPackagesFromAssetsFile();
// Build file graph
var files = GetFiles(packages);
var trimmable = new Trimmable(TrimmablePackages?.Select(i => i.ItemSpec),
TrimmableFiles?.Select(i => GetFileNameFromItem(i)));
Queue <NuGetPackageNode> packageRoots = GetPackageRoots(packages, trimmable);
Queue <FileNode> fileRoots = GetFileRoots(files, trimmable);
while (packageRoots.Count > 0 || fileRoots.Count > 0)
{
while (fileRoots.Count > 0)
{
var fileNode = fileRoots.Dequeue();
foreach (var file in fileNode.Dependencies.Where(f => !trimmable.IsFileTrimmable(f.Name)))
{
IncludeNode(fileRoots, file);
}
if (fileNode.Package != null && !trimmable.IsPackageTrimmable(fileNode.PackageId))
{
IncludeNode(packageRoots, fileNode.Package);
}
}
while (packageRoots.Count > 0)
{
var packageNode = packageRoots.Dequeue();
foreach (var dependency in packageNode.Dependencies.Where(d => !trimmable.IsPackageTrimmable(d.Id)))
{
IncludeNode(packageRoots, dependency);
}
foreach (var file in packageNode.Files.Where(f => !trimmable.IsFileTrimmable(f.Name)))
{
IncludeNode(fileRoots, file);
}
}
}
var excludedItems = files.Values.Where(f => !f.IsIncluded).Select(f => f.OriginalItem);
TrimmedItems = excludedItems.ToArray();
RuntimeItemsAfterTrimming = RuntimeItems.Except(excludedItems).ToArray();
LogResults(files.Values);
return(!Log.HasLoggedErrors);
}
Queue <NuGetPackageNode> GetPackageRoots(IDictionary <string, NuGetPackageNode> packages, Trimmable trimmable)
{
var packageRootQueue = new Queue <NuGetPackageNode>();
if (RootPackages != null)
{
var rootPackageIds = RootPackages.Select(i => GetPackageIdFromItemSpec(i.ItemSpec));
var trimmedRootPackageIds = rootPackageIds.Where(p => !trimmable.IsPackageTrimmable(p));
foreach (var rootPackageId in trimmedRootPackageIds)
{
NuGetPackageNode rootPackage;
if (!packages.TryGetValue(rootPackageId, out rootPackage))
{
throw new Exception($"Root package {rootPackageId} was specified but was not found in {AssetsFilePath}");
}
IncludeNode(packageRootQueue, rootPackage);
}
}
return(packageRootQueue);
}
private bool IsPackageTrimmable(NuGetPackageNode package)
{
return(TreatAllPackagesAsTrimmable ||
trimmable.IsPackageTrimmable(package.Id) ||
(TreatMetaPackagesAsTrimmable && package.IsMetaPackage) ||
(TreatMultiPackagesAsTrimmable && package.IsMultiPackage && package.Files.Any(f => !f.IsIncluded)));
}
private bool IsPackageTrimmable(NuGetPackageNode package)
{
return(trimmable.IsPackageTrimmable(package.Id) ||
(TreatMetaPackagesAsTrimmable && package.IsMetaPackage));
}