/// <summary>
/// Function to open a writable stream to the file.
/// </summary>
/// <param name="path">The path to the file.</param>
/// <returns>A stream to the file.</returns>
public MemoryStream OpenForWrite(string path)
{
MemoryStream stream;
if (_fileInfos.ContainsKey(path))
{
RamDiskFileInfo fileInfo = GetFileInfo(path);
if (!_fileData.TryGetValue(fileInfo, out stream))
{
throw new FileNotFoundException(string.Format(Resources.GORFS_ERR_FILE_NOT_FOUND, path));
}
return(stream);
}
// This is a new file, so open it as such.
var info = new RamDiskFileInfo(path, 0, DateTime.Now, DateTime.Now);
stream = new MemoryStream();
_fileInfos.Add(path, info);
_fileData.Add(info, stream);
return(stream);
}
/// <summary>
/// Function to open a read only stream to a file.
/// </summary>
/// <param name="path">Path to the file.</param>
/// <returns>The stream to the file.</returns>
public Stream OpenReadStream(string path)
{
RamDiskFileInfo fileInfo = GetFileInfo(path);
if (!_fileData.TryGetValue(fileInfo, out MemoryStream stream))
{
throw new FileNotFoundException(string.Format(Resources.GORFS_ERR_FILE_NOT_FOUND, path));
}
return(new GorgonStreamWrapper(stream, 0, stream.Length, false));
}
/// <summary>
/// Function to update the information for a file.
/// </summary>
/// <param name="path">Path to the file.</param>
/// <param name="fileInfo">File information to replace.</param>
public void UpdateFile(string path, ref RamDiskFileInfo fileInfo)
{
if (_fileInfos.TryGetValue(path, out RamDiskFileInfo old))
{
_fileInfos.Remove(old.FullPath);
_fileInfos[path] = fileInfo;
}
else
{
old = fileInfo;
}
if (!_fileData.TryGetValue(old, out MemoryStream oldStream))
{
throw new FileNotFoundException(string.Format(Resources.GORFS_ERR_FILE_NOT_FOUND, path));
}
_fileData.Remove(old);
_fileData[fileInfo] = oldStream;
}
