private void btnCompress_Click(object sender, EventArgs e)
{
var sfd = new SaveFileDialog();
if (sfd.ShowDialog() == DialogResult.Cancel)
{
return;
}
var offset = numOffset.Value;
var length = numLength.Value;
if (_compressionFormat == null)
{
_compressionFormat = new CompositeCTRFormat();
}
var compression = _compressionFormat.GetCompression(cmbAlgorithm.SelectedIndex);
var fs = File.OpenRead(txtFilePath.Text);
fs.Seek((long)offset, SeekOrigin.Begin);
var os = File.Create(sfd.FileName);
compression.Compress(fs, (long)length, os);
os.Close();
fs.Close();
}
private void btnDecompress_Click(object sender, EventArgs e)
{
var sfd = new SaveFileDialog();
if (sfd.ShowDialog() == DialogResult.Cancel)
{
return;
}
var offset = numOffset.Value;
var length = numLength.Value;
if (_compressionFormat == null)
{
_compressionFormat = new CompositeCTRFormat();
}
var fs = File.OpenRead(txtFilePath.Text);
fs.Seek((long)offset, SeekOrigin.Begin);
if (_compressionFormat.Supports(fs, (long)length))
{
var os = File.Create(sfd.FileName);
_compressionFormat.Decompress(fs, (long)length, os);
os.Close();
}
else
{
MessageBox.Show(@"This file is not is a supported format.");
}
fs.Close();
}
