private string GetDecompressedText(string compressedFilePath, string compressedFileKeysPath)
{
var reader = new TxtReader();
var compressor = new HuffmanCompressor();
var byteReader = new ByteReader();
var byteContent = byteReader.ReadFile(compressedFilePath);
var bytes = ByteExtractor.GetBytes(byteContent);
var codesString = reader.ReadFile(compressedFileKeysPath, Encoding.UTF8);
var codesToDecoding = DictionaryConverter.ConvertFromString(codesString);
var decompressedText = compressor.Decompress(bytes, codesToDecoding);
return(decompressedText);
}
private Tuple <byte[], string> GetCompressedTextAndCodes(string filePath)
{
var reader = new TxtReader();
var preprocessor = new HuffmanPreprocessor();
var compressor = new HuffmanCompressor();
var fileContent = reader.ReadFile(filePath, Encoding.UTF8);
var charsCount = CharCounter.GetSymbolsCount(fileContent);
var sortedChars = charsCount.OrderBy(pair => pair.Value).ToDictionary(pair => pair.Key, pair => pair.Value);
var nodeList = preprocessor.GetNodeList(sortedChars);
var tree = preprocessor.GetHuffmanTree(nodeList);
var codes = preprocessor.GetCharCodes(tree);
var compressedText = compressor.GetCompressedText(fileContent, codes);
codes.Add(compressedText.Length.ToString(), new byte[0]);
var codesText = DictionaryConverter.ConvertToString(codes);
return(new Tuple <byte[], string>(compressedText, codesText));
}