public void Save()
{
const uint version = 0;
var regionsFolder = _world.Folder + Path.DirectorySeparatorChar + RegionsFolder;
FolderUtils.CreateRegionFolderIfNotExist(regionsFolder);
var file = regionsFolder + Path.DirectorySeparatorChar + _position.X + "-" + _position.Y + "-" + _position.Z + ".reg";
var stream = new DeflateStream(File.Open(file, FileMode.OpenOrCreate, FileAccess.Write), CompressionMode.Compress);
var formatter = new BinaryFormatter();
formatter.Serialize(stream, version);
ForEachRegionPosition((x, y, z) => {
var chunk = _savedChunks[x, y, z];
var save = chunk != null && !chunk.Natural;
stream.WriteByte(save ? (byte)1 : (byte)0);
if (!save)
{
return;
}
chunk.Save(stream, formatter);
});
stream.Close();
}
static unsafe byte[] CompressFlipRb3(byte[] data, int height, int stride)
{
using var compressStream = new MemoryStream();
compressStream.Write(FakeDeflateHeader, 0, FakeDeflateHeader.Length);
using (var compressor = new DeflateStream(compressStream, CompressionLevel.Fastest))
{
fixed(byte *srcPtr = data)
{
byte *srcPtrOff = srcPtr;
for (int v = 0; v < height; v++)
{
compressor.WriteByte(0);
for (int u = 0; u < stride; u += 3, srcPtrOff += 3)
{
byte tmp = srcPtrOff[0];
srcPtrOff[0] = srcPtrOff[2];
srcPtrOff[2] = tmp;
}
compressor.Write(data, v * stride, stride);
}
}
compressor.Flush();
compressor.Close();
}
return(compressStream.ToArray());
}
static void Main()
{
// Создание файла и архива.
// Файл из которого будем делать архив
FileStream source = File.OpenRead(@"D:\test.txt");
// Создаем файл "архив"
FileStream destination = File.Create(@"D:\archive.dfl");
// Создание компрессора.
//Предоставляет методы и свойства для сжатия и распаковки потоков с использованием
// алгоритма Deflate.
DeflateStream compressor = new DeflateStream(destination, CompressionMode.Compress);
// Заполнение архива информацией из файла.
int theByte = source.ReadByte();
while (theByte != -1)
{
compressor.WriteByte((byte)theByte);
theByte = source.ReadByte();
}
// Удаление компрессора.
compressor.Close();
}
//Некоторые архивы имеют заголовки - например ZIP, а Deflate - не имеют таких заголовков
//по этому я и не могу открыть его через стандартный архиватор.
static void Main(string[] args)
{
//Создание файла
FileStream fileStream = File.Open(@"D:\test_dfl_1.txt", FileMode.OpenOrCreate);
//Запись в файл
StreamWriter writer = new StreamWriter(fileStream);
writer.WriteLine("Privet, Roman from Deflate");
//Создание архива
FileStream archiveStream = File.Create(@"D:\archive_dfl.dfl");
DeflateStream compressor = new DeflateStream(archiveStream, CompressionMode.Compress);
// тут лучше применить do while!!!!! смотри пример 003_Zip_Decompression
int theByte = fileStream.ReadByte();
while (theByte != -1)
{
compressor.WriteByte((byte)theByte);
theByte = fileStream.ReadByte();
}
writer.Close();
compressor.Close();
}
static Patch processChunk(byte[] orig, byte[] mod, int chunkStart, int chunkEnd)
{
int patchSize = chunkEnd - chunkStart;
Debug.Assert(patchSize < Patch.MaxPatchSize);
int matchAreaSize = Patch.MatchAreaSize(patchSize);
int matchBefore = (matchAreaSize - patchSize) / 2;
int matchAfter = matchAreaSize - (patchSize + matchBefore);
Debug.Assert(matchBefore <= chunkStart);
Debug.Assert(chunkEnd + matchAfter <= orig.Length);
byte[] origBytes = new byte[matchAreaSize];
byte[] patchBytes = new byte[patchSize];
Array.ConstrainedCopy(orig, chunkStart - matchBefore, origBytes, 0, matchAreaSize);
Array.ConstrainedCopy(mod, chunkStart, patchBytes, 0, patchSize);
MemoryStream ms = new MemoryStream();
DeflateStream comp = new DeflateStream(ms, CompressionMode.Compress);
comp.WriteByte(0);
comp.Flush();
long base_len = ms.Length;
comp.Write(origBytes, 0, origBytes.Length);
comp.Flush();
return(new Patch(origBytes, patchBytes, matchBefore, Convert.ToInt32(ms.Length - base_len)));
}
public override void WriteByte(byte value)
{
if (CanWrite)
{
_DeflateStream.WriteByte(value);
_Adler32.Update(value);
}
else
{
throw new InvalidOperationException();
}
}
public override void WriteByte(byte value)
{
if (this.CanWrite == true)
{
_deflateStream.WriteByte(value);
_adler32.Update(value);
}
else
{
throw new InvalidOperationException();
}
}
public byte[] Deflate(byte[] data)
{
using (MemoryStream output = new MemoryStream())
{
using (DeflateStream gzip =
new DeflateStream(output, CompressionMode.Compress))
{
foreach (byte bajt in data)
{
gzip.WriteByte(bajt);
}
}
return(output.ToArray());
}
}
public unsafe void Save(string path)
{
using (Stream s = File.Open(path, FileMode.Create, FileAccess.Write)) {
s.Write(Signature, 0, Signature.Length);
using (MemoryStream ms = new MemoryStream()) {
ms.Write(IPAddress.HostToNetworkOrder(width));
ms.Write(IPAddress.HostToNetworkOrder(height));
ms.WriteByte(8); // Bit Depth
ms.WriteByte(2 | 4); // Color Type
ms.WriteByte(0); // Compression
ms.WriteByte(0); // Filter
ms.WriteByte(0); // Interlacing
WriteChunk(s, "IHDR", ms);
}
using (MemoryStream ms = new MemoryStream()) {
ms.WriteByte(0x78); // Compression Method and Flags
ms.WriteByte(0x9c); // Flags
using (Stream compressed = new DeflateStream(ms, CompressionLevel.Optimal, true))
{
fixed(ColorRgba *ptr = data)
{
int stride = width * 4;
byte[] buffer = new byte[stride];
for (var y = 0; y < Height; y++)
{
Marshal.Copy(new IntPtr((byte *)ptr + y * stride), buffer, 0, stride);
compressed.WriteByte(0); // Filter - None
compressed.Write(buffer, 0, stride); // Row
}
}
}
WriteChunk(s, "IDAT", ms);
}
WriteChunk(s, "IEND", null);
}
}
static void Main()
{
FileStream source = File.OpenRead(@"D:\test.txt");
FileStream destination = File.Create(@"D:\archive.dfl");
DeflateStream compressor = new DeflateStream(destination, CompressionMode.Compress);
int theByte = source.ReadByte();
while (theByte != -1)
{
compressor.WriteByte((byte)theByte);
theByte = source.ReadByte();
}
compressor.Close();
}
/*
* static byte[] Compress(byte[] data)
* {
* using (var compressStream = new MemoryStream())
* using (var compressor = new DeflateStream(compressStream, CompressionLevel.Fastest))
* {
* compressStream.Write(FakeDeflateHeader, 0, FakeDeflateHeader.Length);
* compressor.Write(data, 0, data.Length);
* compressor.Close();
* return compressStream.ToArray();
* }
* }
*/
static byte[] Compress(byte[] data, int height, int stride)
{
using var compressStream = new MemoryStream();
compressStream.Write(FakeDeflateHeader, 0, FakeDeflateHeader.Length);
using (var compressor = new DeflateStream(compressStream, CompressionLevel.Fastest))
{
for (int v = 0, offset = 0; v < height; v++, offset += stride)
{
compressor.WriteByte(0);
compressor.Write(data, offset, stride);
}
compressor.Flush();
compressor.Close();
}
return(compressStream.ToArray());
}
/// <summary>
/// Write func for the CWLS-format<para />
/// For information on the format check the load/read func
/// </summary>
public static void write_recents(string file, IEnumerable <string> recents)
{
dbg("[CWLS]Writing file...");
Stream fs = File.Open(file, Create, FileAccess.Write);
fs.write(cwls_header);
fs.WriteByte(5);
dbg("[CWLS]Wrote header.");
DeflateStream d = new DeflateStream(fs, CompressionLevel.Optimal, false);
foreach (string r in recents)
{
d.write(utf8(r));
d.WriteByte(11);
dbg("[CWLS]Wrote \"" + r + "\".");
}
d.Close();
dbg("[CWLS]Finished.");
}
private void btnZip_Click(object sender, EventArgs e)
{
FileInfo info = new FileInfo(listBox1.SelectedItem.ToString());
FileStream source = File.OpenRead(listBox1.SelectedItem.ToString());
FileStream destination = File.Create(listBox1.SelectedItem.ToString() + ".dfl");
using (DeflateStream compressor = new DeflateStream(destination, CompressionMode.Compress))
{
int theByte = source.ReadByte();
while (theByte != -1)
{
compressor.WriteByte((byte)theByte);
theByte = source.ReadByte();
}
label2.Text = "Архив был создан:" + info.Name + ".dfl";
}
source.Close();
destination.Close();
}
static void Deflate_NoRepetition()
{
using (Stream s = File.Create("compressed.bin"))
using (Stream ds = new DeflateStream(s, CompressionMode.Compress))
for (byte i = 0; i < 100; i++)
{
ds.WriteByte(i);
}
Console.WriteLine($"Size on disk: {new FileInfo("compressed.bin").Length}");
using (Stream s = File.OpenRead("compressed.bin"))
using (Stream ds = new DeflateStream(s, CompressionMode.Decompress))
for (byte i = 0; i < 100; i++)
{
Console.WriteLine(ds.ReadByte());
} // Writes 0 to 99
File.Delete("compressed.bin");
}
[Category("StaticLinkedAotNotWorking")] // Native MPH loading issues
public void JunkAtTheEnd()
{
// Write a deflated stream, then some additional data...
using (MemoryStream ms = new MemoryStream())
{
// The compressed stream
using (DeflateStream stream = new DeflateStream(ms, CompressionMode.Compress, true))
{
stream.WriteByte(1);
stream.Flush();
}
// Junk
ms.WriteByte(2);
ms.Position = 0;
// Reading: this should not hang
using (DeflateStream stream = new DeflateStream(ms, CompressionMode.Decompress))
{
byte[] buffer = new byte[512];
int len = stream.Read(buffer, 0, buffer.Length);
Console.WriteLine(len == 1);
}
}
}
/// <summary>
/// Writes MLArrays into <c>OutputStream</c>
/// </summary>
/// <remarks>
/// Writes MAT-file header and compressed data (<c>miCompressed</c>).
/// </remarks>
/// <param name="stream"><c>Stream</c></param>
/// <param name="data"><c>Collection</c> of <c>MLArray</c> elements.</param>
/// <param name="compress">Use data compression?</param>
public MatFileWriter(BinaryWriter stream, ICollection data, bool compress)
{
// Write header
WriteHeader(stream);
foreach (MLArray matrix in data)
{
if (compress)
{
// prepare buffer for MATRIX data
MemoryStream memstrm = new MemoryStream();
BinaryWriter bw = new BinaryWriter(memstrm);
WriteMatrix(bw, matrix); // Write MATRIX bytes into buffer
memstrm.Position = 0; // Rewind the stream
// Compress data to save storage
MemoryStream compressed = new MemoryStream();
uint s1 = 1, s2 = 0, crc = 0; // Adler-32 CRC
using (DeflateStream df = new DeflateStream(compressed, CompressionMode.Compress, true))
{
int readByte;
do
{
readByte = memstrm.ReadByte();
if (readByte != -1)
{
df.WriteByte((byte)readByte);
s1 = (s1 + (byte)readByte) % 0xFFF1;
s2 = (s2 + s1) % 0xFFF1;
}
} while (readByte != -1);
crc = (s2 << 16) | s1;
}
compressed.Position = 0;
// zip RFC 1950
byte[] compressedBytes = new byte[compressed.Length + 6];
compressedBytes[0] = 0x78;
compressedBytes[1] = 0x9c;
for (int i = 2; i < compressedBytes.Length - 4; i++)
{
compressedBytes[i] = (byte)compressed.ReadByte();
}
BitConverter.GetBytes(crc).CopyTo(compressedBytes, compressedBytes.Length - 4);
// write COMPRESSED tag and compressed data into output channel
ByteBuffer buf = new ByteBuffer(2 * 4 + compressedBytes.Length);
buf.PutInt(MatDataTypes.miCOMPRESSED);
buf.PutInt(compressedBytes.Length);
buf.Put(compressedBytes, 0, compressedBytes.Length);
stream.Write(buf.Array());
compressed.Close();
}
else
{
// Write MATRIX bytes into buffer
WriteMatrix(stream, matrix);
}
}
stream.Close();
}
/// <summary>
/// Writes MLArrays into <c>OutputStream</c>
/// </summary>
/// <remarks>
/// Writes MAT-file header and compressed data (<c>miCompressed</c>).
/// </remarks>
/// <param name="stream"><c>Stream</c></param>
/// <param name="data"><c>Collection</c> of <c>MLArray</c> elements.</param>
/// <param name="compress">Use data compression?</param>
public MatFileWriter(BinaryWriter stream, ICollection data, bool compress)
{
// Write header
WriteHeader(stream);
foreach (MLArray matrix in data)
{
if (compress)
{
// Prepare buffer for MATRIX data
MemoryStream memstrm = new MemoryStream();
BinaryWriter bw = new BinaryWriter(memstrm);
WriteMatrix(bw, matrix); // Write MATRIX bytes into buffer
memstrm.Position = 0; // Rewind the stream
// Compress data to save storage
MemoryStream compressed = new MemoryStream();
#if NET20
zlib.ZOutputStream zos = new zlib.ZOutputStream(compressed, -1);
byte[] input = new byte[128];
int len = 0;
while ((len = memstrm.Read(input, 0, input.Length)) > 0)
{
zos.Write(input, 0, len);
}
zos.Flush();
zos.Close(); // important to note that the zlib.ZOutputStream needs to close before writting out the data to the Base.stream
byte[] compressedBytes = compressed.ToArray();
#endif
#if NET40
uint s1 = 1, s2 = 0, crc = 0; // Adler-32 CRC
using (DeflateStream df = new DeflateStream(compressed, CompressionMode.Compress, true))
{
int readByte;
do
{
readByte = memstrm.ReadByte();
if (readByte != -1)
{
df.WriteByte((byte)readByte);
s1 = (s1 + (byte)readByte) % 0xFFF1;
s2 = (s2 + s1) % 0xFFF1;
}
}while (readByte != -1);
crc = (s2 << 16) | s1;
}
compressed.Position = 0;
// zip RFC 1950
byte[] compressedBytes = new byte[compressed.Length + 6];
compressedBytes[0] = 0x78;
compressedBytes[1] = 0x9c;
for (int i = 2; i < compressedBytes.Length - 4; i++)
{
compressedBytes[i] = (byte)compressed.ReadByte();
}
BitConverter.GetBytes(crc).CopyTo(compressedBytes, compressedBytes.Length - 4);
#endif
// write COMPRESSED tag and compressed data into output channel
ByteBuffer buf = new ByteBuffer(2 * 4 + compressedBytes.Length);
buf.PutInt(MatDataTypes.miCOMPRESSED);
buf.PutInt(compressedBytes.Length);
buf.Put(compressedBytes, 0, compressedBytes.Length);
stream.Write(buf.Array());
compressed.Close();
}
else
{
// Write MATRIX bytes into buffer
WriteMatrix(stream, matrix);
}
}
stream.Close();
}
public async Task ZipStreamTest()
{
//两个通用的压缩流: GZipStream, DeflateStream
//两者的区别在于GZipStream会在开头和结尾写入额外的协议信息, 其中包括检测错误CRC
//它们的构造函数接受底层流参数, 并将数据压缩写入底层流或者从底层流读取数据并解压
#region 文件数据压缩
//高密度的非重复的二进制文件压缩效果很差(缺少设计规范的加密数据的压缩比是最差的)
//高密度的非重复的二进制文件的压缩, 压缩后的文件大小和压缩前的文件大小几乎不变
//压缩
using (var sCompress = File.Create("ZipStreamTestCompress.bin"))
using (var sNoCompress = File.Create("ZipStreamTestNoCompress.bin"))
using (var dsCompress = new DeflateStream(sCompress, CompressionMode.Compress))
using (var dsNoCompress = new DeflateStream(sNoCompress, CompressionMode.Compress))
{
for (byte i = 0; i < 100; i++)
{
dsCompress.WriteByte(i);
dsNoCompress.WriteByte(i);
}
}
//解压
using (var s = File.OpenRead("ZipStreamTestCompress.bin"))
using (var ds = new DeflateStream(s, CompressionMode.Decompress))
{
for (byte i = 0; i < 100; i++)
{
var b = ds.ReadByte();
}
}
//高重复的二进制文件的压缩, 由5KB压缩至1KB
//下例从一个简短的句子中随机抽取1000个单词形成文本流, 并对该文本流进行压缩
string[] words = "The quick brown fox jumps over the lazy dog".Split(" ");
var rand = new Random();
using (var sCompress = File.Create("ZipStreamTestCompress.bin"))
using (var sNoCompress = File.Create("ZipStreamTestNoCompress.bin"))
using (var dsCompress = new DeflateStream(sCompress, CompressionMode.Compress))
using (var writerCompress = new StreamWriter(dsCompress))
using (var writerNoCompress = new StreamWriter(sNoCompress))
{
for (int i = 0; i < 1000; i++)
{
await writerCompress.WriteAsync(words[rand.Next(words.Length)] + " ");
await writerNoCompress.WriteAsync(words[rand.Next(words.Length)] + " ");
}
}
#endregion
#region 内存数据压缩
//DeflateStream的Dispose是非常标准的关闭流的方法, 它会清理该过程中所有未写入的缓存, 也会关闭对应的底层流
//如果不希望它关闭对应的底层流, 可以通过向Deflate的构造器中传入额外的标记(leaveOpen)实现
var bytes = new byte[1000];
var noCompressionLength = bytes.Length; //1000
//压缩
var ms = new MemoryStream();
using (var ds = new DeflateStream(ms, CompressionMode.Compress))
//using (var ds = new DeflateStream(ms, CompressionMode.Compress, true)) //不关闭底层流的写法
{
ds.Write(bytes, 0, bytes.Length);
}
var bytesCompress = ms.ToArray();
var compressionLength = bytesCompress.Length; //11
//解压
ms = new MemoryStream(bytesCompress);
using (var ds = new DeflateStream(ms, CompressionMode.Decompress))
{
for (var i = 0; i < 1000; i += ds.Read(bytes, i, 1000 - i))
{
;
}
}
#endregion
}
/// <summary>
/// Compresses the target image by saving its differences from the source image and
/// write the result to the input stream.
/// If the source image is <c>null</c> or not of the same size as the target image, the
/// target image written to the stream in PNG format.
/// </summary>
public static unsafe void CompressByRawBlocks(
Bitmap target,
byte[] targetEncoded,
Bitmap source,
string sourceId,
Stream stream,
int blockSize = 10)
{
ArgumentGuard.NotNull(target, nameof(target));
ArgumentGuard.NotNull(targetEncoded, nameof(targetEncoded));
ArgumentGuard.NotNull(stream, nameof(stream));
try
{
Size?sourceSize = source?.Size;
if (sourceSize == null || sourceSize != target.Size)
{
stream.Write(targetEncoded, 0, targetEncoded.Length);
return;
}
}
catch (ArgumentException)
{
stream.Write(targetEncoded, 0, targetEncoded.Length);
return;
}
var columns = (target.Width / blockSize) + ((target.Width % blockSize) == 0 ? 0 : 1);
var rows = (target.Height / blockSize) + ((target.Height % blockSize) == 0 ? 0 : 1);
WriteHeader(FormatRawBlocks_, sourceId ?? string.Empty, stream);
CommonUtils.ToBytesBE((short)blockSize, stream);
BitmapData sbd = null;
BitmapData tbd = null;
try
{
var rect = new Rectangle(Point.Empty, source.Size);
sbd = source.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
tbd = target.LockBits(rect, ImageLockMode.ReadOnly, PixelFormat.Format24bppRgb);
var channelBytes = new byte[blockSize * blockSize];
using (var compressed = new DeflateStream(stream, CompressionLevel.Optimal, true))
{
fixed(byte *channelBytesPtr = channelBytes)
{
for (byte channel = 0; channel < 3; ++channel)
{
var blockNumber = 0;
for (int row = 0; row < rows; ++row)
{
for (int column = 0; column < columns; ++column)
{
if (!CompareAndCopyBlockChannelData(
(byte *)sbd.Scan0,
(byte *)tbd.Scan0,
source.Size,
sbd.Stride,
blockSize,
column,
row,
channel,
channelBytesPtr,
out int count))
{
compressed.WriteByte(channel);
CommonUtils.ToBytesBE(blockNumber, compressed);
compressed.Write(channelBytes, 0, count);
if (stream.Position > targetEncoded.Length)
{
stream.Position = 0;
stream.SetLength(targetEncoded.Length);
stream.Write(targetEncoded, 0, targetEncoded.Length);
return;
}
}
++blockNumber;
}
}
}
}
compressed.Flush();
}
if (stream.Position > targetEncoded.Length)
{
stream.Position = 0;
stream.SetLength(targetEncoded.Length);
stream.Write(targetEncoded, 0, targetEncoded.Length);
}
}
finally
{
if (sbd != null)
{
source.UnlockBits(sbd);
}
if (tbd != null)
{
target.UnlockBits(tbd);
}
}
}
//wykorzystujemy strumień pliku w celu przeprowadzenia operacji odczytu, zapisu i wyszukiwania
static void Main(string[] args)
{
// utworzenie w katalogu bieżącym pliku o nazwie test.txt
using (Stream s = new FileStream("test.txt", FileMode.Create))
{
Console.WriteLine(s.CanRead); // prawda
Console.WriteLine(s.CanWrite); // prawda
Console.WriteLine(s.CanSeek); // prawda
s.WriteByte(101);
s.WriteByte(102);
byte[] block = { 1, 2, 3, 4, 5 };
s.Write(block, 0, block.Length); // zapis bloku 5 bajtów
Console.WriteLine(s.Length); // 7
Console.WriteLine(s.Position); // 7
s.Position = 0; // przejście z powrotem na początek
Console.WriteLine(s.ReadByte()); // 101
Console.WriteLine(s.ReadByte()); // 102
// odczyt danych ze strumienia i umieszczenie ich w bloku tablicy
Console.WriteLine(s.Read(block, 0, block.Length)); // 5
// przyjmując założenie, że ostatni odczyt zwrócił wartość 5, znajdujemy się
// na końcu pliku i dlatego teraz wywołanie Read() zwróci wartość 0
Console.WriteLine(s.Read(block, 0, block.Length)); // 0
}
//to samo ale Async
Console.WriteLine("Async:");
AsyncDemo();
//StreamReader i StreamWriter
//StreamWriter zapisuje dwa wiersze tekstu w pliku, a następnie egzemplarz StreamReader odczytuje tekst zapisany w pliku
using (FileStream fss = File.Create("testy.txt"))
using (TextWriter writer = new StreamWriter(fss))
{
writer.WriteLine("Wiersz1");
writer.WriteLine("Wiersz2");
}
using (FileStream fs = File.OpenRead("testy.txt"))
using (TextReader reader = new StreamReader(fs))
{
Console.WriteLine(reader.ReadLine()); // Wiersz1
Console.WriteLine(reader.ReadLine()); // Wiersz2
}
using (TextWriter writer = File.AppendText("testt.txt"))
writer.WriteLine("Wiersz3");
using (TextReader reader = File.OpenText("testt.txt"))
while (reader.Peek() > -1)
{
Console.WriteLine(reader.ReadLine());
} // Wiersz1
// Wiersz2
// Wiersz3
using (TextWriter w = File.CreateText("but.txt")) // użycie domyślnego
w.WriteLine("but—"); // kodowania znaków UTF-8
using (Stream s = File.OpenRead("but.txt"))
for (int b; (b = s.ReadByte()) > -1;)
{
Console.WriteLine(b);
}
//kompresja strumienia
using (Stream s = File.Create("compressed.bin"))
using (Stream ds = new DeflateStream(s, CompressionMode.Compress))
for (byte i = 0; i < 100; i++)
{
ds.WriteByte(i);
}
using (Stream s = File.OpenRead("compressed.bin"))
using (Stream ds = new DeflateStream(s, CompressionMode.Decompress))
for (byte i = 0; i < 100; i++)
{
Console.WriteLine(ds.ReadByte());
} // zapis od 0 do 99
byte[] data = new byte[1000]; // W przypadku pustej tablicy można się spodziewać
//kompresja w pamięci
// uzyskania dobrego współczynnika kompresji!
var ms = new MemoryStream();
using (Stream ds = new DeflateStream(ms, CompressionMode.Compress))
ds.Write(data, 0, data.Length);
byte[] compressed = ms.ToArray();
Console.WriteLine(compressed.Length); // 11
// dekompresja na postać tablicy danych
ms = new MemoryStream(compressed);
using (Stream ds = new DeflateStream(ms, CompressionMode.Decompress))
for (int i = 0; i < 1000; i += ds.Read(data, i, 1000 - i))
{
;
}
}
public void WriteByte(byte value)
{
DeflateStreamInstance.WriteByte(value);
}
public void WriteByte(byte b)
{
deflate.WriteByte(b);
checksum_a = (checksum_a + b) % ADLER_MOD;
checksum_b = (checksum_b + checksum_a) % ADLER_MOD;
}