public IEnumerator <IFileInfo> GetEnumerator()
{
// Only enumerate directories, and files with matching
// .encrypted and .keyname extensions.
var keynameFiles = new Dictionary <String, IFileInfo>();
var encryptedFiles = new List <IFileInfo>();
foreach (var fileInfo in innerDirectoryContents)
{
if (fileInfo.IsDirectory)
{
yield return(fileInfo);
}
else
{
string extension = Path.GetExtension(fileInfo.Name);
if (extension == ".encrypted")
{
encryptedFiles.Add(fileInfo);
}
else if (extension == ".keyname")
{
keynameFiles[fileInfo.Name] = fileInfo;
}
}
}
foreach (IFileInfo fileInfo in encryptedFiles)
{
IFileInfo keynameFile = keynameFiles.GetValueOrDefault(
Path.ChangeExtension(fileInfo.Name, ".keyname"));
if (keynameFile != null)
{
yield return(EncryptedFileInfo.FromFileInfo(kms, fileInfo,
keynameFile));
}
}
}
public IFileInfo GetFileInfo(string subpath)
{
return(EncryptedFileInfo.FromFileInfo(kms,
innerProvider.GetFileInfo(subpath),
innerProvider.GetFileInfo(Path.ChangeExtension(subpath, ".keyname"))));
}