// open a stream for read access
private Stream OpenMemoryStreamForRead(string path)
{
// check for the stream and return it
if (m_streams.ContainsKey(path))
{
// grab the stream
SiteStorageMemoryStream stream = m_streams[path] as SiteStorageMemoryStream;
// confirm that the stream was closed prior to being opened for reading
if (stream.FinalLength != -1)
{
// return a new stream based on the buffer in the already
// written to stream
return(new MemoryStream(stream.GetBuffer(), 0, stream.FinalLength, false));
}
// user writing the stream never closed it -- you can't read a stream that
// has been written to until it has been closed
else
{
throw new SiteStorageException(
null, SiteStorageException.StreamNotClosed, path);
}
}
else
{
// throw exception indicating we couldn't find the path
throw new
SiteStorageException(null, SiteStorageException.PathNotFound, path);
}
}
// open a stream for write access (overwrites existing stream if any)
private Stream OpenMemoryStreamForWrite(string path)
{
// if the stream already exists then remove it
// (issue: does memory 'leak' for a period of time here in the
// absence of a very smart garbage collector?)
if (m_streams.ContainsKey(path))
{
m_streams.Remove(path);
}
// create a new stream, store it away, and return a reference to it
SiteStorageMemoryStream newStream = new SiteStorageMemoryStream();
m_streams.Add(path, newStream);
return(newStream);
}
// open a stream for write access (overwrites existing stream if any)
private Stream OpenMemoryStreamForWrite(string path)
{
// if the stream already exists then remove it
// (issue: does memory 'leak' for a period of time here in the
// absence of a very smart garbage collector?)
if (m_streams.ContainsKey(path))
m_streams.Remove(path);
// create a new stream, store it away, and return a reference to it
SiteStorageMemoryStream newStream = new SiteStorageMemoryStream();
m_streams.Add(path, newStream);
return newStream;
}