private static void CompressWord(CompressionDto ret, ref int bufferOffset)
{
var tempBuffer = ret.Buffer;
if (!IsLetterInDictionary(ret))
{
ret.compressionSteps.Add(new CommonTranslatorDto {
Status = 1, NewChar = tempBuffer[0]
});
ret.CompressedDictionary += tempBuffer[0];
ret.CompressedDictionary = ret.CompressedDictionary.Remove(default(int), 1);
bufferOffset++;
}
else
{
while (!ret.CompressedDictionary.Contains(tempBuffer))
{
tempBuffer = tempBuffer.Remove(tempBuffer.Length - 1);
}
int offset = ret.CompressedDictionary.Length - ret.CompressedDictionary.LastIndexOf(tempBuffer) - 1;
ret.CompressedDictionary += tempBuffer;
ret.CompressedDictionary = ret.CompressedDictionary.Remove(default(int), tempBuffer.Length);
ret.compressionSteps.Add(new CommonTranslatorDto {
Status = 0, Length = tempBuffer.Length, Offset = offset
});
bufferOffset += tempBuffer.Length;
}
}
public static void PerformCompression(CompressionDto compressionDto, int bufferOffset)
{
while (!IsCompressed(compressionDto, bufferOffset))
{
compressionDto.Buffer = SetBuffer(bufferOffset);
CompressWord(compressionDto, ref bufferOffset);
View.PrintStage(compressionDto);
}
}
public static string PrintTranslator(CompressionDto compressionDao)
{
if (compressionDao.compressionSteps.LastOrDefault().Status == 0)
{
return(String.Format("{0}, {1}, {2}",
compressionDao.compressionSteps.LastOrDefault().Status,
compressionDao.compressionSteps.LastOrDefault().Offset,
compressionDao.compressionSteps.LastOrDefault().Length));
}
return(String.Format("{0}, {1}",
compressionDao.compressionSteps.LastOrDefault().Status,
compressionDao.compressionSteps.LastOrDefault().NewChar));
}
static void Main(string[] args)
{
if (READ_WRITE_TO_FILE)
{
WORD_TO_COMPRESS = FileAssistant.ReadFile(READ_FILE_NAME);
}
var compressionDto = new CompressionDto();
var decompressionDto = new DecompressionDto();
int bufferOffset = 0;
View.PrintStartCompressionMessage();
CompressionController.PerformCompression(compressionDto, bufferOffset);
View.PrintStartDecompressionMessage();
DecompressionController.PerformDecompression(compressionDto, READ_WRITE_TO_FILE);
}
public static void PrintStage(CompressionDto compressionDao)
{
Console.WriteLine(compressionDao.CompressedDictionary + "\t" + compressionDao.Buffer + "\t" + PrintTranslator(compressionDao));
}
private static bool IsLetterInDictionary(CompressionDto ret)
{
return(ret.CompressedDictionary.Contains(ret.Buffer[0].ToString()));
}
private static bool IsCompressed(CompressionDto ret, int bufferOffset)
{
return(bufferOffset >= Program.WORD_TO_COMPRESS.Length ? true : false);
}
