private IEnumerable <PackageChange> DetermineChangedNugetPackages()
{
// Try to find a Directory.Packages.props file in the list of changed files
var packagePropsPath = _changedFiles.Value
.SingleOrDefault(f => f.EndsWith("Directory.Packages.props"));
if (packagePropsPath is null)
{
return(Enumerable.Empty <PackageChange>());
}
// Get the contents of the file at from/to revisions
var(fromFile, toFile) = _changesProvider.Value
.GetTextFileContents(
_executionData.RepositoryPath,
packagePropsPath,
_executionData.From,
_executionData.To);
// Parse props files into package and version dictionary
var fromPackages = NugetHelper.ParseDirectoryPackageProps(fromFile);
var toPackages = NugetHelper.ParseDirectoryPackageProps(toFile);
// Compare both dictionaries
return(NugetHelper.DiffPackageDictionaries(fromPackages, toPackages));
}