private void BtnDecode_Click(object sender, EventArgs e)
{
BinaryFileHandling binaryFileHandling = new BinaryFileHandling(errorHandling);
//Check code table file
if (!File.Exists(_codeTableFile))
{
MessageBox.Show("Error in decoding: Code table file \"" + _codeTableFile + "\" doesn't exist");
return;
}
//Reading code table file, spliting it to rows
string fileContent = File.ReadAllText(_codeTableFile, Encoding.Default);
string[] separator = { "\r\n" };
string[] rows = fileContent.Split(separator, StringSplitOptions.RemoveEmptyEntries);
//Dictionary for tree building
Dictionary <char, string> dict = new Dictionary <char, string>();
foreach (var item in rows)
{
string[] pieces = item.Split(';');
dict.Add(pieces[0].ToCharArray()[0], pieces[1]);
}
//Tree building from dict
_tree.BuildFromCodeTable(dict);
//Reading BitArray object from file
BitArray encoded = null;
var obj = binaryFileHandling.Load(_codedFile);
if (obj != null)
{
if (obj is BitArray)
{
encoded = obj as BitArray;
}
}
//Reading from "true" bits
//byte[] testbytes = File.ReadAllBytes("testi.bin");
//BitArray encoded1 = new BitArray(testbytes);
//Decoding
if (encoded != null)
{
tbEncodedOutput.Text = _tree.Decode(encoded);
}
else
{
MessageBox.Show("Error in loading " + _codedFile + " file");
}
}
private void BtnEncode_Click(object sender, EventArgs e)
{
//Check that text doesn't include ';' which is used as separator in code table
if (tbTextToCode.Text.Contains(";"))
{
MessageBox.Show("Error in encoding: Text to encode can't include ';'");
return;
}
//Encoding
_tree.BuildFromText(tbTextToCode.Text);
BitArray encoded = _tree.Encode(tbTextToCode.Text);
//Saving encoded text in "true" bits
//byte[] bytes = new byte[encoded.Count/8+1];
//for (int i = 0; i < encoded.Count; i++)
//{
// if (encoded[i])
// bytes[i/8] = (bytes[i/8] |= (byte)(1 << (i%8)));
//}
//File.WriteAllBytes("testi.bin", bytes);
//Saving BitArray object to file
BinaryFileHandling binaryFileHandling = new BinaryFileHandling(errorHandling);
binaryFileHandling.Save(_codedFile, encoded);
//Creating code table
List <string> codeTable = new List <string>();
Dictionary <char, string> dict = new Dictionary <char, string>();
dict = _tree.CreateCodeTable();
foreach (var pair in dict)
{
codeTable.Add(pair.Key + ";" + pair.Value);
}
//Saving code table to file
File.WriteAllLines(_codeTableFile, codeTable, Encoding.Default);
}
