public static string[] DecompressFile(string filePath)
{
LZW Compresor_lzw = new LZW();
FileStream file = new FileStream(filePath, FileMode.OpenOrCreate);
BinaryReader Lector = new BinaryReader(file);
int Cant_Byte_Read = 10000;
int Aumentar_Max = 1;
byte[] Text = new byte[Cant_Byte_Read];
Text = Lector.ReadBytes(Cant_Byte_Read);
while (file.Position < file.Length)
{
byte[] Aux = Lector.ReadBytes(Cant_Byte_Read);
Array.Resize(ref Text, Text.Length + Aux.Length);
Aux.CopyTo(Text, Cant_Byte_Read * Aumentar_Max);
Aumentar_Max++;
}
Lector.Close();
byte[] TextoComprimido = Text;
int cant_CName = TextoComprimido[0];
string Name_Original = "";
for (int i = 1; i <= cant_CName; i++)
{
Name_Original += Convert.ToChar(TextoComprimido[i]);
}
byte[] Data_retorna = new byte[TextoComprimido.Length - (cant_CName + 1)];
Array.Copy(TextoComprimido, (cant_CName + 1), Data_retorna, 0, Data_retorna.Length);
byte[] Impresor = Compresor_lzw.Descompresion(Data_retorna);
string FinalFileName = Directory.GetCurrentDirectory() + "\\Decompressed\\" + Name_Original;
var extension = FinalFileName.Split('.');
string ext = extension[extension.Length - 1];
string name = Name_Original.Substring(0, Name_Original.Length - ext.Length - 1);
int count = 0;
while (File.Exists(FinalFileName))
{
count++;
FinalFileName = Directory.GetCurrentDirectory() + "\\Decompressed\\" + name + count + "." + ext;
}
FileStream archivo = new FileStream(FinalFileName, FileMode.OpenOrCreate);
BinaryWriter Escritor = new BinaryWriter(archivo);
Escritor.Write(Impresor);
Escritor.Close();
File.Delete(filePath);
string[] names = { Name_Original, FinalFileName };
return(names);
}
public void Descomprimir()
{
string descomprimido = "";
string directorio;
directorio = root + @"\\Upload\\";
if (!Directory.Exists(directorio + "\\Compresion\\"))
{
DirectoryInfo di = Directory.CreateDirectory(directorio + "\\Compresion\\");
}
string comprimido = System.IO.File.ReadAllText(@path);
const int bufferLength = 100;
List <int> bytedecompress = new List <int>();
var buffer = new char[bufferLength];
using (var file = new FileStream(path, FileMode.Open))
{
using (var reader = new BinaryReader(file))
{
while (reader.BaseStream.Position != reader.BaseStream.Length)
{
buffer = reader.ReadChars(bufferLength);
foreach (var item in buffer)
{
bytedecompress.Add((int)Convert.ToChar(item));
}
}
}
}
descomprimido = LZW.Descompresion(bytedecompress);
string rootRazonFactor = root;
NombreTemporal = NombreTemporal.Replace(".lzw", "");
root = root + @"\\Upload\\Compresion\\" + NombreTemporal + ".txt";
File.WriteAllText(@root, descomprimido);
FactorCompresion = Convert.ToDouble(comprimido.Length) / Convert.ToDouble(descomprimido.Length);
RazonCompresion = Convert.ToDouble(descomprimido.Length) / Convert.ToDouble(comprimido.Length);
PorcentajeCompresion = ((FactorCompresion / RazonCompresion) * 100);
double raz = Math.Round(RazonCompresion, 2);
double fac = Math.Round(FactorCompresion, 2);
double porcent = Math.Round(PorcentajeCompresion, 2);
rootRazonFactor = rootRazonFactor + @"\\Upload\\Compresion\\FactorRazon.txt";
File.WriteAllText(@rootRazonFactor, "Razon de compresión: " + raz.ToString() + Environment.NewLine + "Factor de compresión: " + fac.ToString() + Environment.NewLine + "Porcentaje de compresión: " + porcent.ToString() + "%");
}
static void Main(string[] args)
{
LZW CompresorLZW = new LZW();
Header();
TitleOption1();
bool exit = false;
while (!exit)
{
try
{
Header();
TitleOption1();
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("Ingrese el texto a comprimir:\n\n");
Console.ResetColor();
string Text = Console.ReadLine();
if (String.IsNullOrEmpty(Text))
{
throw new FormatException();
}
byte[] texto = new byte[Text.Length];
for (int i = 0; i < Text.Length; i++)
{
texto[i] = Convert.ToByte(Convert.ToChar(Text[i]));
}
byte[] Comprimido = CompresorLZW.Compresion(texto);
string result = "";
foreach (byte bit in Comprimido)
{
result += Convert.ToString(Convert.ToChar(bit));
}
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("\n\nEl texto comprimido es el siguiente:\n\n");
Console.ResetColor();
Console.WriteLine(result);
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("\n\nPresione cualquier tecla para ver el mismo texto descompreso.");
Console.ResetColor();
Console.ReadKey();
Console.Clear();
Header();
TitleOption2();
result = "";
byte[] Descomprimido = CompresorLZW.Descompresion(Comprimido);
foreach (byte bit in Descomprimido)
{
result += Convert.ToString(Convert.ToChar(bit));
}
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("\n\nEl texto descomprimido es el siguiente:");
Console.ResetColor();
Console.WriteLine("\n" + result + "\n\n");
Console.ForegroundColor = ConsoleColor.Yellow;
Console.WriteLine("Proceso finalizado. Presione una tecla.");
Console.ResetColor();
Console.ReadKey();
Header();
Console.ForegroundColor = ConsoleColor.Magenta;
string e = "Ingrese S para volver a comprimir o cualquier cosa para salir del programa.";
Console.WriteLine(String.Format("{0," + ((Console.WindowWidth / 2) + (e.Length / 2)) + "}", e) + "\n");
Console.ResetColor();
if (!Convert.ToString(Console.ReadLine()).Equals("S"))
{
exit = true;
}
}
catch
{
Header();
string e = "Ocurrió un error. Presione una tecla para volver a comprimir.";
Console.WriteLine(String.Format("{0," + ((Console.WindowWidth / 2) + (e.Length / 2)) + "}", e) + "\n");
Console.ReadKey();
}
}
}
public ActionResult Descompress([FromBody] string path)
{
lZW.Descompresion(path);
return(Ok());
}
