public static IQueryable<IPackage> BuildQueryForSingleVersion(this IPackageRepository packageRepository, string filter, bool allowPrereleaseVersions)
{
Argument.IsNotNull(() => packageRepository);
var queryable = packageRepository.GetPackages();
if (!string.IsNullOrWhiteSpace(filter))
{
filter = filter.Trim();
var localPackageRepository = packageRepository as LocalPackageRepository;
if (localPackageRepository == null)
{
queryable = queryable.Where(x => x.Title.ToUpper().Contains(filter.ToUpper()));
}
else
{
queryable = queryable.Where(x => CultureInfo.InvariantCulture.CompareInfo.IndexOf(x.Id, filter, CompareOptions.IgnoreCase) != -1);
}
}
if (allowPrereleaseVersions)
{
queryable = queryable.Where(x => x.IsAbsoluteLatestVersion);
}
else
{
queryable = queryable.Where(x => x.IsLatestVersion);
}
return queryable;
}
#endregion
