private static IEnumerable <MSBuildRestoreItemGroup> GenerateGroupsWithConditions(
MSBuildRestoreItemGroup original,
bool isCrossTargeting,
params string[] conditions)
{
if (isCrossTargeting)
{
foreach (var condition in conditions)
{
yield return(new MSBuildRestoreItemGroup()
{
RootName = original.RootName,
Position = original.Position,
Items = original.Items,
Conditions = original.Conditions.Concat(new[] { condition }).ToList()
});
}
}
else
{
// No changes needed
yield return(original);
}
}
public static List <MSBuildOutputFile> GetMSBuildOutputFiles(PackageSpec project,
LockFile assetsFile,
IEnumerable <RestoreTargetGraph> targetGraphs,
IReadOnlyList <NuGetv3LocalRepository> repositories,
RestoreRequest request,
string assetsFilePath,
bool restoreSuccess,
ILogger log)
{
// Generate file names
var targetsPath = GetMSBuildFilePath(project, request, "targets");
var propsPath = GetMSBuildFilePath(project, request, "props");
// Targets files contain a macro for the repository root. If only the user package folder was used
// allow a replacement. If fallback folders were used the macro cannot be applied.
// Do not use macros for fallback folders. Use only the first repository which is the user folder.
var repositoryRoot = repositories.First().RepositoryRoot;
// Invalid msbuild projects should write out an msbuild error target
if (!targetGraphs.Any())
{
return(GenerateMultiTargetFailureFiles(
targetsPath,
propsPath,
request.ProjectStyle));
}
// Add additional conditionals for multi targeting
var multiTargetingFromMetadata = (request.Project.RestoreMetadata?.CrossTargeting == true);
var isMultiTargeting = multiTargetingFromMetadata ||
request.Project.TargetFrameworks.Count > 1;
// ItemGroups for each file.
var props = new List <MSBuildRestoreItemGroup>();
var targets = new List <MSBuildRestoreItemGroup>();
// MultiTargeting imports are shared between TFMs, to avoid
// duplicate import warnings only add each once.
var multiTargetingImportsAdded = new HashSet <string>(StringComparer.OrdinalIgnoreCase);
// Skip runtime graphs, msbuild targets may not come from RID specific packages.
var ridlessTargets = assetsFile.Targets
.Where(e => string.IsNullOrEmpty(e.RuntimeIdentifier));
var packagesWithTools = new HashSet <string>(assetsFile.Libraries.Where(i => i.HasTools).Select(i => i.Name), StringComparer.OrdinalIgnoreCase);
foreach (var ridlessTarget in ridlessTargets)
{
// There could be multiple string matches from the MSBuild project.
var frameworkConditions = GetMatchingFrameworkStrings(project, ridlessTarget.TargetFramework)
.Select(match => string.Format(CultureInfo.InvariantCulture, TargetFrameworkCondition, match))
.ToArray();
// Find matching target in the original target graphs.
var targetGraph = targetGraphs.FirstOrDefault(e =>
string.IsNullOrEmpty(e.RuntimeIdentifier) &&
ridlessTarget.TargetFramework == e.Framework);
// Sort by dependency order, child package assets should appear higher in the
// msbuild targets and props files so that parents can depend on them.
var sortedGraph = TopologicalSortUtility.SortPackagesByDependencyOrder(ConvertToPackageDependencyInfo(targetGraph.Flattened));
// Filter out to packages only, exclude projects.
var packageType = new HashSet <string>(
targetGraph.Flattened.Where(e => e.Key.Type == LibraryType.Package)
.Select(e => e.Key.Name),
StringComparer.OrdinalIgnoreCase);
// Package -> PackageInfo
// PackageInfo is kept lazy to avoid hitting the disk for packages
// with no relevant assets.
var sortedPackages = sortedGraph.Where(e => packageType.Contains(e.Id))
.Select(sortedPkg =>
new KeyValuePair <LockFileTargetLibrary, Lazy <LocalPackageSourceInfo> >(
key: ridlessTarget.Libraries.FirstOrDefault(assetsPkg =>
sortedPkg.Version == assetsPkg.Version &&
sortedPkg.Id.Equals(assetsPkg.Name, StringComparison.OrdinalIgnoreCase)),
value: new Lazy <LocalPackageSourceInfo>(() =>
NuGetv3LocalRepositoryUtility.GetPackage(
repositories,
sortedPkg.Id,
sortedPkg.Version))))
.Where(e => e.Key != null)
.ToArray();
// build/ {packageId}.targets
var buildTargetsGroup = new MSBuildRestoreItemGroup();
buildTargetsGroup.RootName = MSBuildRestoreItemGroup.ImportGroup;
buildTargetsGroup.Position = 2;
buildTargetsGroup.Items.AddRange(sortedPackages.SelectMany(pkg =>
pkg.Key.Build.WithExtension(TargetsExtension)
.Where(e => pkg.Value.Exists())
.Select(e => pkg.Value.GetAbsolutePath(e)))
.Select(path => GetPathWithMacros(path, repositoryRoot))
.Select(GenerateImport));
targets.AddRange(GenerateGroupsWithConditions(buildTargetsGroup, isMultiTargeting, frameworkConditions));
// props/ {packageId}.props
var buildPropsGroup = new MSBuildRestoreItemGroup();
buildPropsGroup.RootName = MSBuildRestoreItemGroup.ImportGroup;
buildPropsGroup.Position = 2;
buildPropsGroup.Items.AddRange(sortedPackages.SelectMany(pkg =>
pkg.Key.Build.WithExtension(PropsExtension)
.Where(e => pkg.Value.Exists())
.Select(e => pkg.Value.GetAbsolutePath(e)))
.Select(path => GetPathWithMacros(path, repositoryRoot))
.Select(GenerateImport));
props.AddRange(GenerateGroupsWithConditions(buildPropsGroup, isMultiTargeting, frameworkConditions));
// Create an empty PropertyGroup for package properties
var packagePathsPropertyGroup = MSBuildRestoreItemGroup.Create("PropertyGroup", Enumerable.Empty <XElement>(), 1000, isMultiTargeting ? frameworkConditions : Enumerable.Empty <string>());
var projectGraph = targetGraph.Graphs.FirstOrDefault();
// Packages with GeneratePathProperty=true
var packageIdsToCreatePropertiesFor = new HashSet <string>(projectGraph.Item.Data.Dependencies.Where(i => i.GeneratePathProperty).Select(i => i.Name), StringComparer.OrdinalIgnoreCase);
var localPackages = sortedPackages.Select(e => e.Value);
// Find the packages with matching IDs in the list of sorted packages, filtering out ones that there was no match for or that don't exist
var packagePathProperties = localPackages
.Where(pkg => pkg?.Value?.Package != null && (packagesWithTools.Contains(pkg.Value.Package.Id) || packageIdsToCreatePropertiesFor.Contains(pkg.Value.Package.Id)) && pkg.Exists())
.Select(pkg => pkg.Value.Package)
// Get the property
.Select(GeneratePackagePathProperty);
packagePathsPropertyGroup.Items.AddRange(packagePathProperties);
// Don't bother adding the PropertyGroup if there were no properties added
if (packagePathsPropertyGroup.Items.Any())
{
props.Add(packagePathsPropertyGroup);
}
if (isMultiTargeting)
{
// buildMultiTargeting/ {packageId}.targets
var buildCrossTargetsGroup = new MSBuildRestoreItemGroup();
buildCrossTargetsGroup.RootName = MSBuildRestoreItemGroup.ImportGroup;
buildCrossTargetsGroup.Position = 0;
buildCrossTargetsGroup.Items.AddRange(sortedPackages.SelectMany(pkg =>
pkg.Key.BuildMultiTargeting.WithExtension(TargetsExtension)
.Where(e => pkg.Value.Exists())
.Select(e => pkg.Value.GetAbsolutePath(e)))
.Where(path => multiTargetingImportsAdded.Add(path))
.Select(path => GetPathWithMacros(path, repositoryRoot))
.Select(GenerateImport));
targets.AddRange(GenerateGroupsWithConditions(buildCrossTargetsGroup, isMultiTargeting, CrossTargetingCondition));
// buildMultiTargeting/ {packageId}.props
var buildCrossPropsGroup = new MSBuildRestoreItemGroup();
buildCrossPropsGroup.RootName = MSBuildRestoreItemGroup.ImportGroup;
buildCrossPropsGroup.Position = 0;
buildCrossPropsGroup.Items.AddRange(sortedPackages.SelectMany(pkg =>
pkg.Key.BuildMultiTargeting.WithExtension(PropsExtension)
.Where(e => pkg.Value.Exists())
.Select(e => pkg.Value.GetAbsolutePath(e)))
.Where(path => multiTargetingImportsAdded.Add(path))
.Select(path => GetPathWithMacros(path, repositoryRoot))
.Select(GenerateImport));
props.AddRange(GenerateGroupsWithConditions(buildCrossPropsGroup, isMultiTargeting, CrossTargetingCondition));
}
// Write out contentFiles only for XPlat PackageReference projects.
if (request.ProjectStyle != ProjectStyle.ProjectJson &&
request.Project.RestoreMetadata?.SkipContentFileWrite != true)
{
// Create a group for every package, with the nearest from each of allLanguages
props.AddRange(sortedPackages.Select(pkg =>
pkg.Key.ContentFiles
.Where(e => pkg.Value.Exists())
.OrderBy(e => e.Path, StringComparer.Ordinal)
.Select(e =>
Tuple.Create(
item1: pkg.Key,
item2: e,
item3: GetPathWithMacros(pkg.Value.GetAbsolutePath(e), repositoryRoot))))
.SelectMany(e => GetLanguageGroups(e))
.SelectMany(group => GenerateGroupsWithConditions(group, isMultiTargeting, frameworkConditions)));
}
}
// Add exclude all condition to all groups
foreach (var group in props.Concat(targets))
{
group.Conditions.Add(ExcludeAllCondition);
}
// Create XML, these may be null if the file should be deleted/not written out.
var propsXML = GenerateMSBuildFile(props, request.ProjectStyle);
var targetsXML = GenerateMSBuildFile(targets, request.ProjectStyle);
// Return all files to write out or delete.
var files = new List <MSBuildOutputFile>
{
new MSBuildOutputFile(propsPath, propsXML),
new MSBuildOutputFile(targetsPath, targetsXML)
};
var packageFolders = repositories.Select(e => e.RepositoryRoot);
AddNuGetPropertiesToFirstImport(files, packageFolders, repositoryRoot, request.ProjectStyle, assetsFilePath, restoreSuccess);
return(files);
}