private static void Compress(string filename, Stream file)
{
using (var output = new FileStream($"{filename}{Extension}", FileMode.Create, FileAccess.Write))
{
output.WriteCharacters(Header);
output.WriteUInt(Version);
output.Position += 4;
output.WriteUInt((uint)file.Length);
LZSS.Compress(file, output);
output.Position = 8;
output.WriteUInt((uint)(output.Length - 16));
}
}
public void CompressSimpleTextNoPointersByteArraysOnly()
{
byte[] inputBytes = { 97, 98, 99 };
var inputFile = new DataFile();
inputFile.LoadBytes(inputBytes);
byte[] expected = { 48, 152, 140, 96 };
var comp = new LZSS();
var output = comp.Compress(inputFile);
var actual = output.GetBytes(0, output.Length);
Assert.AreEqual(expected, actual);
}
public void CompressSimpleText()
{
var expectedPath = TestContext.CurrentContext.TestDirectory + "../../../res/compressedTestFile";
var expectedFile = new DataFile(expectedPath);
var inputPath = TestContext.CurrentContext.TestDirectory + "../../../res/testfile2";
var inputFile = new DataFile(inputPath);
var comp = new LZSS();
var actualFile = comp.Compress(inputFile);
Assert.AreEqual(expectedFile.GetBytes(0, expectedFile.Length),
actualFile.GetBytes(0, actualFile.Length));
;
}
static void Main(string[] args)
{
if (args.Length != 1)
{
return;
}
using (FileStream input = new FileStream(args[0], FileMode.Open))
{
using (FileStream output = new FileStream(args[0] + "_compressed", FileMode.Create))
{
LZSS.Compress(input, output);
}
}
}
public void CompressSimpleTextPointers()
{
var inputPath = TestContext.CurrentContext.TestDirectory + "../../../res/testfile3";
var inputFile = new DataFile(inputPath);
byte[] expectedData = { 48, 152, 140, 102, 72, 1, 152 };
var expected = new DataFile();
expected.LoadBytes(expectedData);
var comp = new LZSS();
var actual = comp.Compress(inputFile);
Assert.AreEqual(expected.GetBytes(0, expected.Length), actual.GetBytes(0, actual.Length));
}
public void CompressSimpleTextNoPointersDataFile()
{
var inputPath = TestContext.CurrentContext.TestDirectory + "../../../res/testfile1";
var inputFile = new DataFile(inputPath);
byte[] expectedData = { 48, 152, 140, 96 };
var expected = new DataFile();
expected.LoadBytes(expectedData);
var comp = new LZSS();
var actual = comp.Compress(inputFile);
Assert.IsTrue(DataFile.Compare(expected, actual));
}
private void button_NetworkControl_Disconnect_Click(object sender, EventArgs e)
{
FileStream fs = new FileStream("far.exe", FileMode.Open);
byte[] uncomp = new byte[fs.Length];
fs.Read(uncomp, 0, uncomp.Length);
ICompression iCompressionArray_obj = new LZSS(8, true, true, false, 131072);
DateTime dt1 = DateTime.Now;
byte [] compress = iCompressionArray_obj.Compress(uncomp, false);
DateTime dt2 = DateTime.Now;
TimeSpan ts1 = dt2 - dt1;
MessageBox.Show(ts1.Minutes.ToString() + ":" + ts1.Seconds.ToString() + ":" + ts1.Milliseconds.ToString());
}
public static byte[] ToData(LPack Pack)
{
using (MemoryStream Output = new MemoryStream())
{
BinaryWriter Writer = new BinaryWriter(Output);
Writer.Write(Pack.Files.Length);
Writer.Write(0u); //Total decompressed length Place Holder
uint DataAddress = (uint)(8 + Pack.Files.Length * 8);
uint FileDecLength = 0;
for (int i = 0; i < Pack.Files.Length; i++)
{
Output.Seek(8 + i * 8, SeekOrigin.Begin);
Utils.WriteUInt24(Writer, (uint)Pack.Files[i].Data.Length);
Writer.Write(Pack.Files[i].FileId);
Writer.Write(DataAddress);
Output.Seek(DataAddress, SeekOrigin.Begin);
byte[] Comp = LZSS.Compress(Pack.Files[i].Data);
Writer.Write(Comp);
DataAddress += (uint)Comp.Length;
FileDecLength += (uint)Pack.Files[i].Data.Length;
}
Output.Seek(4, SeekOrigin.Begin);
Writer.Write(FileDecLength);
return(Output.ToArray());
}
}