public FileMeta Save(string filename, string content, int offset)
{
if (filename == null)
{
throw new ArgumentNullException(nameof(filename));
}
if (this.metas.ContainsKey(filename))
{
throw new AlreadyExistsException("Filename already exists.");
}
if (content == null)
{
throw new ArgumentNullException(nameof(content));
}
var size = content.Length;
if (this.IsMemoryCollisionsExists(offset, size))
{
throw new InvalidOperationException("Found possible violation of memory consistency.");
}
var meta = new FileMeta(filename, offset, size);
this.metas.Add(meta.Filename, meta);
if (!this.IsValidBounds(offset, size))
{
throw new ArgumentOutOfRangeException(nameof(offset), "Found violation of storage boundaries.");
}
this.WriteContent(content, offset);
return(meta);
}
private bool Equals(FileMeta other)
{
return(string.Equals(this.Filename, other.Filename) &&
this.Offset == other.Offset &&
this.Size == other.Size);
}