public void WriteFile(byte[] text, string newName, string name)
{
//escribir archivo binario
string folder = @"C:\Compressions\";
string fullPath = folder + newName;
// crear el directorio
DirectoryInfo directory = Directory.CreateDirectory(folder);
string content = "";
foreach (var item in text)
{
content += huffCode[item];
}
byte[] compressed = ConvertToByte(content);
using (FileStream writer = new FileStream(fullPath, FileMode.Open))
{
byte[] ToWrite = ConvertToByte(content);
for (int i = 0; i < ToWrite.Length; i++)
{
byte[] temp = { ToWrite[i] };
writer.Seek(0, SeekOrigin.End);
writer.Write(temp, 0, 1);
}
}
double compressedBytes = compressed.Length;
double originalBytes = text.Length;
double rc = compressedBytes / originalBytes;
double fc = originalBytes / compressedBytes;
double percentage = rc * 100;
CompressionsCollection newElement = new CompressionsCollection(name, fullPath, rc, fc, percentage.ToString("N2") + "%");
Data.Instance.archivos.Insert(0, newElement);
}
public void Compress(byte[] text, string newName, string name)
{
previous = "";
for (int i = 0; i < allText.Length; i++)
{
actual = allText[i].ToString();
string aux = previous + actual;
if (alphabet.Values.Contains(aux)) // if wk is on the dictionary
{
previous = previous + actual;
}
else
{
List <string> cadenas = alphabet.Values.ToList();
//agregar codigo de w
for (int j = 0; j < alphabet.Count; j++)
{
if (cadenas[j] == previous)
{
output.Add(alphabet.Keys.ToList()[j]);
j = alphabet.Count; //parar de comparar.
}
}
//agregar wk al diccionario
cont++;
aux = previous + actual;
alphabet.Add(cont, aux);
//w = k
previous = actual;
}
}
//imprimir codigo de w
List <string> values = alphabet.Values.ToList();
for (int j = 0; j < alphabet.Count; j++)
{
if (values[j] == previous)
{
output.Add(alphabet.Keys.ToList()[j]);
j = alphabet.Count; //parar de comparar.
}
}
//OBTENCION DE CODIGOS DE SALIDA TERMINADA, imprimir en el archivo
string folder = @"C:\Compressions\";
string fullPath = folder + newName;
// crear el directorio
DirectoryInfo directory = Directory.CreateDirectory(folder);
List <byte> allBytes = new List <byte>();
for (int j = 0; j < output.Count; j++)
{
//byte[] ToWrite = Encoding.ASCII.GetBytes(output[j].ToString());
string binary = Convert.ToString(output[j], 2);
binary = binary.PadLeft(8, '0');
byte[] sequence = binary.Select(c => Convert.ToByte(c.ToString())).ToArray();
allBytes.AddRange(sequence);
}
string content = string.Join("", allBytes.ToArray());
byte[] compressed = ConvertToByte(content);
using (FileStream writer = new FileStream(fullPath, FileMode.OpenOrCreate))
{
byte[] ToWrite = ConvertToByte(content);
for (int i = 0; i < ToWrite.Length; i++)
{
byte[] temp = { ToWrite[i] };
writer.Seek(0, SeekOrigin.End);
writer.Write(temp, 0, 1);
}
}
double compressedBytes = compressed.Length;
double originalBytes = text.Length;
double rc = compressedBytes / originalBytes;
double fc = originalBytes / compressedBytes;
double percentage = rc * 100;
CompressionsCollection newElement = new CompressionsCollection(name, fullPath, rc, fc, percentage.ToString("N2") + "%");
Data.Instance.archivos.Insert(0, newElement);
}
