public override int Read(byte[] buffer, int offset, int count)
{
if (position == 0 && zipEntry.IsCrypted && ((ZipInputStream)zipStream).Password == null && PasswordRequired != null)
{
CompressionPasswordRequiredEventArgs e = new CompressionPasswordRequiredEventArgs();
PasswordRequired(this, e);
if (e.ContinueOperation && e.Password.Length > 0)
{
((ZipInputStream)zipStream).Password = e.Password;
}
}
// TODO: always save to a local temp circular buffer for optimization of the backwards seek.
int total = zipStream.Read(buffer, offset, count);
position += total;
if (ExtractionProgress != null)
{
CompressionExtractionProgressEventArgs e = new CompressionExtractionProgressEventArgs();
e.BytesExtracted = position;
e.FileName = zipEntry.Name;
e.FileSize = zipEntry.Size;
e.PercentComplete = 100.0 * position / zipEntry.Size;
ExtractionProgress(this, e);
}
return(total);
}
protected virtual int OnDataAvailable(IntPtr p1, int p2)
{
int result = 1;
if (this.currentFile != null)
{
this.currentFile.BytesExtracted += p2;
}
if (this.DataAvailable != null)
{
byte[] data = new byte[p2];
Marshal.Copy(p1, data, 0, p2);
DataAvailableEventArgs e = new DataAvailableEventArgs(data);
this.DataAvailable(this, e);
if (!e.ContinueOperation)
{
result = -1;
}
}
if ((this.ExtractionProgress != null) && (this.currentFile != null))
{
CompressionExtractionProgressEventArgs e = new CompressionExtractionProgressEventArgs();
e.FileName = this.currentFile.FileName;
e.FileSize = this.currentFile.UnpackedSize;
e.BytesExtracted = this.currentFile.BytesExtracted;
e.PercentComplete = this.currentFile.PercentComplete;
this.ExtractionProgress(this, e);
if (!e.ContinueOperation)
{
result = -1;
}
}
return(result);
}
