/// <inheritdoc />
/// <remarks>This is the really tricky clever part. It's built around the assumption that we can, at this point of
/// the disposal, still seek back to the beginning of the stream and commit the update that was started in the
/// constructor. It also assumes that other updates are going to be OK with being committed (if there are any).</remarks>
protected override void Dispose(bool disposing)
{
if (Interlocked.Increment(ref _disposed) == 1)
{
var recurse = false;
var copyToTemporaryFile = true;
var isRooted = Path.IsPathRooted(_tarArchiveEntry.TarEntry.File);
if (isRooted)
{
recurse = Directory.Exists(_tarArchiveEntry.TarEntry.File);
copyToTemporaryFile = !recurse && !File.Exists(_tarArchiveEntry.TarEntry.File);
}
if (copyToTemporaryFile)
{
// operating on something that thus far is in-memory only
using (var temporaryDirectory = new TemporaryDirectory())
{
var subdirectory = Path.GetDirectoryName(_tarArchiveEntry.Name);
if (!string.IsNullOrEmpty(subdirectory))
{
Directory.CreateDirectory(Path.Combine(temporaryDirectory.Path, subdirectory));
}
var entryFilePath = Path.Combine(temporaryDirectory.Path, _tarArchiveEntry.Name);
Seek(0, SeekOrigin.Begin);
using (var fileStream = new FileStream(entryFilePath, FileMode.Create, FileAccess.Write))
{
CopyTo(fileStream);
}
var tarEntry = TarEntry.CreateEntryFromFile(entryFilePath);
tarEntry.Name = _tarArchiveEntry.Name;
recurse = IsDirectoryName(tarEntry.Name);
_tarAccess.TarArchive.WriteEntry(tarEntry, recurse);
_tarArchiveEntry.TarEntry = tarEntry;
}
}
else
{
// already operating on an existing on-disk entity
var tarEntry = _tarArchiveEntry.TarEntry;
var tarArchive = _tarAccess.TarArchive;
var rootPath = tarArchive.RootPath;
if (recurse)
{
if (!string.IsNullOrEmpty(_tarAccess.RootLocation))
{
tarArchive.RootPath = Path.GetDirectoryName(_tarAccess.RootLocation);
}
}
try
{
tarArchive.WriteEntry(tarEntry, recurse);
}
finally
{
if (recurse)
{
tarArchive.RootPath = rootPath;
}
}
}
base.Dispose(disposing);
}
}
private NestedCompressedArchiveAccess(ICompressedArchiveAccess parentArchiveAccess, ICompressedArchiveAccess nestedArchiveAccess, TemporaryDirectory temporaryLocation)
{
ParentArchiveAccess = parentArchiveAccess;
NestedAchiveAccess = nestedArchiveAccess;
TemporaryLocation = temporaryLocation;
}