public Form1()
{
InitializeComponent();
lzw = new Lzw();
for (int i = 9; i <= 15; i++)
{
indexMenu.Items.Add(i);
}
indexMenu.SelectedIndex = 0;
methodType.Items.Add("Freeze");
methodType.Items.Add("Empty");
methodType.SelectedIndex = 0;
}
public void IsLzwCorrect(string name, string encodeName, string decodeName)
{
var(source, encoded, decoded) = InitFiles(name, encodeName, decodeName);
try
{
Lzw.Compress(source.OpenRead(), encoded.OpenWrite());
Assert.Greater(source.Length, encoded.Length);
Lzw.Decompress(encoded.OpenRead(), decoded.OpenWrite());
Assert.That(source.Length, Is.EqualTo(decoded.Length));
Assert.That(CompareFiles(source.OpenRead(), decoded.OpenRead()), Is.True);
}
finally
{
encoded.Delete();
decoded.Delete();
}
}
public IActionResult Upload()
{
try
{
var file = Request.Form.Files[0];
string file_nameN = Request.Form["name"];
string metodo = Request.Form["metodo"]; //Recibe el metodo por el cual se va a comprimir
var folderName = Path.Combine("Resources", "Files");
var pathToSave = Path.Combine(Directory.GetCurrentDirectory(), folderName);
string extension = Path.GetExtension(file.FileName);
if (extension == ".txt")
{
if (file.Length > 0)
{
//SUBIR ARCHIVO
var fileName = System.Net.Http.Headers.ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
var fullPath = Path.Combine(pathToSave, fileName);
var dbPath = Path.Combine(folderName, fileName);
var error = "Escriba metodo para comprimir huffman o lzw";
//LECTURA ARCHIVO SUBIDO
if (metodo == "huffman")
{
Huffman arch = new Huffman();
using (var stream = new FileStream(fullPath, FileMode.Create))
{
arch.Name = file.FileName;
file.CopyTo(stream);
}
arch.Size = file.Length;
using (var stream = new FileStream(fullPath, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
var buffer = new byte[Data.BufferLength];
while (br.BaseStream.Position != br.BaseStream.Length)
{
buffer = br.ReadBytes(Data.BufferLength); //llenar el buffer
arch.Dictionary_Original(buffer); //enviar buffer al diccionario
}
}
stream.Close();
}
arch.Start_Dictionary(); // diccionario con probabilidades
arch.Add_Pr(); //sumar probabilidades
arch.OrdenarDic(); //ordena el diccionario y lo agrega a una lista
arch.CrearArbol(); //Creacion de arbol
//CREACION ARCHIVO .HUFF
var fileNameH = file_nameN + ".huff";
var fullPathH = Path.Combine(pathToSave, fileNameH);
var dbPathH = Path.Combine(folderName, fileNameH);
using (var stream = new FileStream(fullPathH, FileMode.Create))
{
//Escribimos en el archivo
}
arch.Write_Buffer = new byte[0];
using (var stream = new FileStream(fullPath, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
var buffer = new byte[Data.BufferLength];
while (br.BaseStream.Position != br.BaseStream.Length)
{
buffer = br.ReadBytes(Data.BufferLength); //llenar el buffer
arch.Traduction(buffer);
}
if (arch.pre_restantes.Length != 0)
{
string auxiliar = string.Empty;
arch.BinaryToDecimal(auxiliar);
}
}
arch.EscribirArch(fullPathH, pathToSave);
stream.Close();
}
var stream1 = new FileStream(fullPathH, FileMode.Open);
return(File(stream1, System.Net.Mime.MediaTypeNames.Application.Octet, fileNameH));
}
if (metodo == "lzw")
{
Lzw arch = new Lzw();
using (var stream = new FileStream(fullPath, FileMode.Create))
{
arch.Name = file.FileName;
file.CopyTo(stream);
}
arch.Size = file.Length;
using (var stream = new FileStream(fullPath, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
var buffer = new byte[Data.BufferLength];
while (br.BaseStream.Position != br.BaseStream.Length)
{
buffer = br.ReadBytes(Data.BufferLength); //llenar el buffer
arch.IniciarDicLZW(buffer); //enviar buffer al diccionario
}
}
stream.Close();
}
//CREACION ARCHIVO .lzw
var fileNameH = file_nameN + ".lzw";
var fullPathH = Path.Combine(pathToSave, fileNameH);
var dbPathH = Path.Combine(folderName, fileNameH);
using (var stream = new FileStream(fullPathH, FileMode.Create))
{
//Escribimos en el archivo
}
arch.buffer_escr = new byte[0];
using (var stream = new FileStream(fullPath, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
var buffer = new byte[Data.BufferLength];
while (br.BaseStream.Position != br.BaseStream.Length)
{
buffer = br.ReadBytes(Data.BufferLength); //llenar el buffer
arch.TraducirLZW(buffer); //traducir en lzw
}
}
arch.EscribirLZW(fullPathH, pathToSave); //escribo en mi archivo LZW
stream.Close();
}
var stream1 = new FileStream(fullPathH, FileMode.Open);
return(File(stream1, System.Net.Mime.MediaTypeNames.Application.Octet, fileNameH));
}
return(Ok(new { error }));
}
else
{
return(BadRequest());
}
}
return(BadRequest());
}
catch (Exception ex)
{
return(StatusCode(500, "Internal server error"));
}
}
public IActionResult Upload()
{
try
{
var file = Request.Form.Files[0];
var folderName = Path.Combine("Resources", "Files");
var pathToSave = Path.Combine(Directory.GetCurrentDirectory(), folderName);
string extension = Path.GetExtension(file.FileName);
var mensajee = "Archivo con extensión incorrecta";
var fileNameH = "";
var fullPathH = "";
if (extension == ".huff")
{
if (file.Length > 0)
{
Huffman arch = new Huffman();
bool lectura_n = false; //Bandera de la lectura de la cantidad de bytes del nombre
bool lectura_n1 = false; //Bandera de la lectura del nombre
bool lectura_1 = false; //Bandera de la lectura de los primeros dos bytes;
bool lectura_can = false; //bandera de la lectura del numero de codigos asci
bool lectura_2 = false; // Bandera de lectura de los codigos ascci;
int can_as = 0;
//SUBIR ARCHIVO
var fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
var fullPath = Path.Combine(pathToSave, fileName);
var dbPath = Path.Combine(folderName, fileName);
string nom = String.Empty;
using (var stream = new FileStream(fullPath, FileMode.Create))
{
file.CopyTo(stream);
}
int cantidadle = 0;
int cantidadn = 0;
using (var stream = new FileStream(fullPath, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
var buffer = new byte[Data.BufferLength];
while (br.BaseStream.Position != br.BaseStream.Length)
{
if (lectura_n == false)
{
buffer = br.ReadBytes(1);
cantidadn = Convert.ToInt32(buffer[0]);
lectura_n = true;
}
else if (lectura_n1 == false)
{
buffer = br.ReadBytes(cantidadn);
for (int x = 0; x < cantidadn; x++)
{
nom = nom + Convert.ToChar(buffer[x]);
}
lectura_n1 = true;
}
else if (lectura_1 == false)
{
buffer = br.ReadBytes(2);// Leo los dos primeros bytes
cantidadle = Convert.ToInt32(buffer[0]);
arch.agregados = Convert.ToInt32(buffer[1]);
lectura_1 = true;
}
else if (lectura_can == false)
{
buffer = br.ReadBytes(cantidadle);
string aux = string.Empty;
for (int x = 0; x < cantidadle; x++)
{
aux = aux + Convert.ToChar(buffer[x]);
}
can_as = Convert.ToInt32(aux);
lectura_can = true;
}
else if (lectura_2 == false)
{
buffer = br.ReadBytes(can_as); //Leo la cantidad de codigos ascci agregados
arch.GuardarAscci(buffer);
lectura_2 = true;
}
else
{
buffer = br.ReadBytes(Data.BufferLength);//llenar el buffer
arch.IniciarDicODesc(buffer);
}
}
}
stream.Close();
}
arch.Start_Dictionary(); // diccionario con probabilidades
arch.Add_Pr(); //sumar probabilidades
arch.OrdenarDic();
arch.CrearArbol();
//CREACION ARCHIVO .TXT
fileNameH = nom + ".txt";
fullPathH = Path.Combine(pathToSave, fileNameH);
var dbPathH = Path.Combine(folderName, fileNameH);
using (var stream = new FileStream(fullPathH, FileMode.Create))
{
//Escribimos en el archivo
}
arch.Binarios(fullPathH);
}
else
{
return(BadRequest());
}
var stream1 = new FileStream(fullPathH, FileMode.Open);
return(File(stream1, System.Net.Mime.MediaTypeNames.Application.Octet, fileNameH));
}
if (extension == ".lzw")
{
if (file.Length > 0)
{
Lzw arch = new Lzw();
bool lectura_n = false; //Bandera de la lectura de la cantidad de bytes del nombre
bool lectura_n1 = false; //Bandera de la lectura del nombre
bool lectura_1 = false; //Bandera de la lectura de los primeros dos bytes;
bool lectura_can = false; //bandera de la lectura del numero de codigos asci
bool lectura_2 = false; // Bandera de lectura de los codigos ascci;
int can_as = 0;
//SUBIR ARCHIVO
var fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
var fullPath = Path.Combine(pathToSave, fileName);
var dbPath = Path.Combine(folderName, fileName);
string nom = String.Empty;
int cantidadle = 0;
using (var stream = new FileStream(fullPath, FileMode.Create))
{
file.CopyTo(stream);
}
using (var stream = new FileStream(fullPath, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(stream))
{
var buffer = new byte[Data.BufferLength];
while (br.BaseStream.Position != br.BaseStream.Length)
{
if (lectura_n == false)
{
buffer = br.ReadBytes(1);
cantidadle = Convert.ToInt32(buffer[0]);
lectura_n = true;
}
else if (lectura_n1 == false)
{
buffer = br.ReadBytes(cantidadle);
nom = string.Empty;
for (int x = 0; x < cantidadle; x++)
{
nom = nom + Convert.ToChar(buffer[x]);
}
lectura_n1 = true;
}
else if (lectura_1 == false)
{
buffer = br.ReadBytes(1);// Leo los dos primeros bytes
cantidadle = Convert.ToInt32(buffer[0]);
lectura_1 = true;
}
else if (lectura_can == false)
{
buffer = br.ReadBytes(cantidadle);
string aux = string.Empty;
for (int x = 0; x < cantidadle; x++)
{
aux = aux + Convert.ToChar(buffer[x]);
}
can_as = Convert.ToInt32(aux);
lectura_can = true;
}
else if (lectura_2 == false)
{
buffer = br.ReadBytes(can_as); //Leo la cantidad de codigos ascci agregados
arch.GuardarAscci(buffer);
lectura_2 = true;
}
else
{
buffer = br.ReadBytes(Data.BufferLength);//llenar el buffer
arch.IniciarDicODescLZW(buffer);
}
}
}
stream.Close();
}
fileNameH = nom + ".txt";
fullPathH = Path.Combine(pathToSave, fileNameH);
var dbPathH = Path.Combine(folderName, fileNameH);
using (var stream = new FileStream(fullPathH, FileMode.Create))
{
//Escribimos en el archivo
}
arch.EscribirTXTLZW(fullPathH);
}
else
{
return(BadRequest());
}
var stream1 = new FileStream(fullPathH, FileMode.Open);
return(File(stream1, System.Net.Mime.MediaTypeNames.Application.Octet, fileNameH));
}
return(Ok(new { mensajee }));
}
catch (Exception ex)
{
return(StatusCode(500, "Internal server error"));
}
}
