public virtual async Task WriteAsync(Stream destination)
{
if (destination == null)
{
throw new ArgumentNullException(nameof(destination));
}
Archive.Stream.Seek(Offset, SeekOrigin.Begin);
using (var brotli = new BrotliStream(Archive.Stream, CompressionMode.Decompress, leaveOpen: true))
{
var size = Math.Max(Archive.BufferSize, 1);
var buffer = new byte[size];
long entryLength = 0;
do
{
int read = await brotli.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false);
if (read == 0)
{
break;
}
entryLength += read;
await destination.WriteAsync(buffer, 0, read).ConfigureAwait(false);
var e = new BrZipArchiveProgressEventArgs(Name, entryLength, destination.Position - Offset);
OnProgress(this, e);
if (e.Cancel)
{
return;
}
}while (true);
}
}
public virtual long AddEntry(string name, Stream entryStream)
{
if (name == null)
{
throw new ArgumentNullException(nameof(name));
}
if (entryStream == null)
{
throw new ArgumentNullException(nameof(entryStream));
}
Stream.Seek(_lastPos, SeekOrigin.Begin);
var bytes = Encoding.UTF8.GetBytes(name);
_writer.Write(bytes.Length);
_writer.Write(bytes);
var uncompressedPos = Stream.Position;
_writer.Write(0L); // uncompressed
_writer.Write(0L); // compressed
// write data
var pos = Stream.Position;
var entryPos = entryStream;
var size = Math.Max(DefaultBufferSize, 1);
var buffer = new byte[size];
long entryLength = 0;
using (var brotli = new BrotliStream(Stream, CompressionMode.Compress, leaveOpen: true))
{
do
{
int read = entryStream.Read(buffer, 0, buffer.Length);
if (read == 0)
{
break;
}
entryLength += read;
brotli.Write(buffer, 0, read);
brotli.Flush();
var e = new BrZipArchiveProgressEventArgs(name, entryLength, Stream.Position - pos);
OnProgress(this, e);
if (e.Cancel)
{
break; // file inside the archive will be truncated...
}
}while (true);
}
_lastPos = Stream.Position;
// go back and update lengths
Stream.Seek(uncompressedPos, SeekOrigin.Begin);
_writer.Write(entryLength);
_writer.Write(_lastPos - pos);
return(_lastPos - pos);
}
protected virtual void OnProgress(object sender, BrZipArchiveProgressEventArgs e) => Progress?.Invoke(sender, e);