private async Task SavePackageLicenseFile(Stream packageFile, Package package)
{
packageFile.Seek(0, SeekOrigin.Begin);
using (var packageArchiveReader = new PackageArchiveReader(packageFile, leaveStreamOpen: true))
{
var packageMetadata = PackageMetadata.FromNuspecReader(packageArchiveReader.GetNuspecReader(), strict: true);
if (packageMetadata.LicenseMetadata == null || packageMetadata.LicenseMetadata.Type != LicenseType.File || string.IsNullOrWhiteSpace(packageMetadata.LicenseMetadata.License))
{
throw new InvalidOperationException("No license file specified in the nuspec");
}
var filename = packageMetadata.LicenseMetadata.License;
var licenseFileEntry = packageArchiveReader.GetEntry(filename); // throws on non-existent file
using (var licenseFileStream = licenseFileEntry.Open())
{
await _packageFileService.SaveLicenseFileAsync(package, licenseFileStream);
}
}
}