public FileSystemResultCode Save()
{
if (Mode == FileSystemMode.Read)
{
return(FileSystemResultCode.CantModifyError);
}
content.Flush();
FileSystemResultCode resultCode = FileSystemResultCode.Success;
FileStream indexStream = null;
try
{
indexStream = new FileStream(IndexFilePath, FileMode.Create, FileAccess.Write, FileShare.None);
chunk.WriteToStream(indexStream);
fragment.WriteToStream(indexStream);
indexStream.Flush();
}
catch
{
resultCode = FileSystemResultCode.IndexFileNotExistError;
}
finally
{
if (indexStream != null)
{
indexStream.Close();
}
}
return(resultCode);
}
public FileSystemResultCode Open(FileSystemMode mode, string contentPath, string indexPath)
{
Mode = mode;
ContentFilePath = contentPath;
IndexFilePath = indexPath;
if (Mode != FileSystemMode.Create && !File.Exists(ContentFilePath))
{
return(FileSystemResultCode.ContentFileNotExistError);
}
if (Mode != FileSystemMode.Create && !File.Exists(IndexFilePath))
{
return(FileSystemResultCode.IndexFileNotExistError);
}
content = new FileContent();
chunk = new FileChunk();
if (Mode != FileSystemMode.Read)
{
fragment = new FileFragment();
}
FileSystemResultCode resultCode = FileSystemResultCode.Success;
resultCode = content.OpenContent(ContentFilePath, Mode);
if (resultCode == FileSystemResultCode.Success)
{
if (Mode != FileSystemMode.Create)
{
FileStream indexStream = null;
try
{
indexStream = new FileStream(IndexFilePath, FileMode.Open, FileAccess.Read, FileShare.None);
resultCode = chunk.ReadFromStream(indexStream);
if (resultCode == FileSystemResultCode.Success && fragment != null)
{
resultCode = fragment.ReadFromStream(indexStream);
}
}
catch
{
resultCode = FileSystemResultCode.IndexFileNotExistError;
}
finally
{
if (indexStream != null)
{
indexStream.Close();
}
}
}
}
if (resultCode != FileSystemResultCode.Success)
{
content.Close();
content = null;
fragment = null;
chunk = null;
}
return(resultCode);
}
