private void decodeButton_Click(object sender, EventArgs e)
{
openFileDialog1.Filter = "";
if (openFileDialog1.ShowDialog() == DialogResult.OK && File.Exists(openFileDialog1.FileName))
{
saveFileDialog1.FileName = new FileInfo(openFileDialog1.FileName).Name + ".decoded";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
var stream = new EncodedStream(File.ReadAllBytes(openFileDialog1.FileName));
stream.Seek(4, SeekOrigin.Current);
byte[] buff = new byte[stream.Length];
buff[0] = 0x79;
buff[1] = 0xCC;
buff[2] = 0xB5;
buff[3] = 0x6A;
stream.Read(buff, 4, (int)stream.Length - 4);
File.WriteAllBytes(saveFileDialog1.FileName, buff);
stream.Close();
MessageBox.Show("File decoded!");
}
}
}
public void TestEncodedStream()
{
byte[] bytes = new byte[512];
for (int i = 0; i < bytes.Length; i++)
{
bytes[i] = (byte)(i < 256 ? i : 511 - i);
}
MemoryStream ms = new MemoryStream();
using (EncodedStream stream = new EncodedStream(ms, new Base64Encoding(), false)) stream.Write(bytes, 0, bytes.Length);
Assert.AreEqual((bytes.Length + 2) / 3 * 4, ms.Length);
Assert.AreEqual(Convert.ToBase64String(bytes), SimpleEightBitEncoding.Instance.GetString(ms.ToArray()));
ms.Position = 0;
using (EncodedStream stream = new EncodedStream(ms, new Base64Encoding(), false))
{
byte[] bytesRead = new byte[bytes.Length];
Assert.AreEqual(bytesRead.Length, stream.Read(bytesRead, 0, bytesRead.Length));
Assert.AreEqual(-1, stream.ReadByte());
TestHelpers.AssertArrayEquals(bytes, bytesRead);
}
}
