/// <summary>
/// Creates a new backup file
/// </summary>
/// <param name="path">The virtual path</param>
/// <returns></returns>
public Stream CreateFile(string path)
{
if (path == null) throw new ArgumentNullException("path");
if (!path.StartsWith("./"))
throw new ArgumentOutOfRangeException("Argument 'path' is out of range.",
new FormatException("The path must begin with './"));
var tempFolderPath = Path.Combine(_repository.Path, "temp");
Directory.CreateDirectory(tempFolderPath);
string tempPath;
do
{
tempPath = Path.Combine(tempFolderPath, _random.Next().ToString(CultureInfo.InvariantCulture));
} while (File.Exists(tempPath));
var stream = new CloseEventStream(new FileStream(tempPath, FileMode.Create, FileAccess.Write));
stream.Closed += delegate
{
var actualPath = "data" + path.Substring(1);
actualPath += "." + FileHelpers.CalculateHash(tempPath);
var entry = new ZipEntry(actualPath);
_outputStream.PutNextEntry(entry);
using (var sourceStream = File.OpenRead(tempPath))
{
sourceStream.CopyTo(_outputStream);
}
_outputStream.CloseEntry ();
File.Delete(tempPath);
};
return stream;
}
protected Stream InternalOpenFile(string path)
{
var archive = new ZipFile(FilePath);
var entry = archive.Cast<ZipEntry> ().Single(a=>a.Name == path);
if (entry == null)
{
throw new FileNotFoundException("File does not exist.");
}
var eventStream = new CloseEventStream(archive.GetInputStream(entry));
eventStream.Closed += (s, e) => archive.Close ();
return eventStream;
}
