public static byte[] Compress(byte[] bytes)
{
MemoryStream memory = new MemoryStream();
using(Zip.Streams.DeflaterOutputStream stream = new Zip.Streams.DeflaterOutputStream(memory, new Zip.Deflater()))
stream.Write(bytes, 0, bytes.Length);
return memory.ToArray();
}
public void WriteFile(Stream outstream, FileInArchive file, byte[] data)
{
MemoryStream inputMS = new MemoryStream(data);
MemoryStream outputMS = new MemoryStream();
byte[] output_buffer = new byte[0];
if (file.Descriptor.CompressionMethod == 1) //ZLib compression
{
ICSharpCode.SharpZipLib.Zip.Compression.Deflater def = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater();
ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream defstream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(outputMS, def);
defstream.Write(data, 0, data.Length);
defstream.Flush();
defstream.Finish();
output_buffer = outputMS.GetBuffer();
file.Descriptor.UncompressedSize = (uint)inputMS.Length;
Write(outstream, file, outputMS);
}
else if (file.Descriptor.CompressionMethod == 0) //No compression
{
file.Descriptor.CompressionMethod = 0;
inputMS.CopyTo(outputMS);
file.Descriptor.UncompressedSize = (uint)inputMS.Length;
Write(outstream, file, outputMS);
}
}
private byte[] SendBinaryReturnCommand(string commandxml)
{
UDPClientFull udpClient = new UDPClientFull(_ip, _port);
MemoryStream ms = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream zips = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms);
byte[] bytData = System.Text.Encoding.UTF8.GetBytes(commandxml);
zips.Write(bytData, 0, bytData.Length);
zips.Close();
byte[] compressedData = (byte[])ms.ToArray();
if (udpClient.Send(compressedData, compressedData.Length) == 0)
{
throw new Exception("Send Data failed");
}
try
{
if (!udpClient.Poll(5000000 * 10, SelectMode.SelectRead))
{
throw new Exception("in 5 second no response");
}
byte[] recvbuf = new byte[2 * 64 * 1024];
IPEndPoint otherpoint = new IPEndPoint(IPAddress.Any, 0);
recvbuf = udpClient.Receive(ref otherpoint);
return(recvbuf);
}
catch (Exception)
{
//throw new Exception("failed in waiting for response");
throw;
}
}
//---------
public static byte[] Compress(byte[] input)
{
System.IO.MemoryStream ms = new MemoryStream();
var def = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms, new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(9));
def.Write(input, 0, input.Length);
def.Flush();
def.Finish();
return ms.ToArray();
}
/// <summary>
/// Compresses a byte array using the specified compression, and returns a compressed byte array.
/// </summary>
/// <param name="bytes">The input bytes to compress.</param>
/// <param name="offset">The amount of offset to apply to the byte array before beginning compression.</param>
/// <param name="length">The length of bytes to compress in the byte array.</param>
/// <param name="compressionType">Type of the compression to apply.</param>
/// <returns>A byte array representing the compressed byte array</returns>
public static byte[] CompressToBytes(byte[] bytes, int offset, int length, CompressionType compressionType)
{
if (bytes == null || bytes.Length == 0)
{
return(new byte[0]);
}
if (offset < 0)
{
throw new ArgumentOutOfRangeException("offset", "offset cannot be less than zero");
}
if (length > bytes.Length)
{
throw new ArgumentOutOfRangeException("length", "length cannot be greater than bytes.length");
}
if (length + offset > bytes.Length)
{
throw new ArgumentOutOfRangeException("length", "length + offset cannot be greater than bytes.length");
}
using (MemoryStream memoryStream = new MemoryStream()) {
switch (compressionType)
{
case CompressionType.BZip:
using (ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream stream = new ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream(memoryStream)) {
stream.Write(bytes, offset, length);
}
break;
case CompressionType.GZip:
using (ICSharpCode.SharpZipLib.GZip.GZipOutputStream stream = new ICSharpCode.SharpZipLib.GZip.GZipOutputStream(memoryStream)) {
stream.Write(bytes, offset, length);
}
break;
// case CompressionType.Tar:
// using (ICSharpCode.SharpZipLib.Tar.TarOutputStream stream = new ICSharpCode.SharpZipLib.Tar.TarOutputStream(memoryStream)) {
// ICSharpCode.SharpZipLib.Tar.TarEntry entry = ICSharpCode.SharpZipLib.Tar.TarEntry.CreateTarEntry("TarEntry");
// entry.Size = length;
// stream.PutNextEntry(entry);
// stream.Write(bytes, offset, length);
// stream.IsStreamOwner = false;
// stream.CloseEntry();
// }
// break;
case CompressionType.Zip:
using (ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream stream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(memoryStream)) {
stream.Write(bytes, offset, length);
}
break;
default:
return(new byte[0]);
}
return(memoryStream.ToArray());
}
}
/// <summary>
/// 压缩字符串
/// </summary>
/// <param name="pBytes"></param>
/// <returns></returns>
public byte[] Compress(byte[] pBytes)
{
MemoryStream mMemory = new MemoryStream();
Deflater mDeflater = new Deflater(ICSharpCode.SharpZipLib.Zip.Compression.Deflater.BEST_COMPRESSION);
ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream mStream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(mMemory, mDeflater, 131072);
mStream.Write(pBytes, 0, pBytes.Length);
mStream.Close();
return(mMemory.ToArray());
}
public static byte[] Compress(byte[] byteData)
{
byte[] compressedData = null;
if (byteData != null)
{
using (MemoryStream ms = new MemoryStream())
{
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl =
new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(9, false);
using (Stream s =
new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms, defl))
s.Write(byteData, 0, byteData.Length);
compressedData = ms.ToArray();
}
}
return compressedData;
}
public static byte[] Compress(byte[] byteData)
{
byte[] compressedData = null;
if (byteData != null)
{
using (MemoryStream ms = new MemoryStream())
{
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl =
new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(9, false);
using (Stream s =
new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms, defl))
s.Write(byteData, 0, byteData.Length);
compressedData = ms.ToArray();
}
}
return(compressedData);
}
static public byte[] CompressAndEncrypt(byte[] input, byte XORKey)
{
MemoryStream input_stream = new MemoryStream();
var output_stream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(input_stream);
output_stream.Write(input, 0, input.Length);
output_stream.Close();
byte[] output = input_stream.ToArray();
for (int i = 0; i < output.Length; i++)
{
output[i] ^= XORKey;
}
return(output);
}
/// <summary>
/// 壓縮處理的byte陣列
/// </summary>
/// <param name="bytes">傳入要處理的byte陣列</param>
/// <returns>回傳位元陣列</returns>
public static byte[] Compress(byte[] bytes)
{
//開起記憶體空間資料流
MemoryStream memory = new MemoryStream();
//使用壓縮輸出資料流(stream),
//並將輸出結果放入memory
//預設開設使用128K bytes
ZipProc.Streams.DeflaterOutputStream stream = new ZipProc.Streams.DeflaterOutputStream(memory,
new ZipProc.Deflater(ZipProc.Deflater.BEST_SPEED),
(128 * 1024));
//將要處理的byte陣列 輸出到 壓縮輸出資料流
stream.Write(bytes, 0, bytes.Length);
//關閉壓縮輸出資料流
stream.Close();
//回傳記憶體資料流內的陣列
return memory.ToArray();
}
/// <summary>
/// Replaces a file by a file
/// </summary>
/// <param name="archFile">file to replace</param>
/// <param name="newFile">new file</param>
public void ReplaceFile(FileInArchive archFile, FileStream newFile)
{
byte[] newFileBuffer = new byte[newFile.Length];
newFile.Read(newFileBuffer, 0, newFileBuffer.Length);
MemoryStream inputMS = new MemoryStream(newFileBuffer);
MemoryStream outputMS = new MemoryStream();
byte[] output_buffer = new byte[0];
if (archFile.descriptor.compressionMethod == 1 && false) //ZLib compression
{
try
{
ICSharpCode.SharpZipLib.Zip.Compression.Deflater def = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater();
ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream defstream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(outputMS, def);
defstream.Write(newFileBuffer, 0, newFileBuffer.Length);
defstream.Flush();
defstream.Finish();
output_buffer = outputMS.GetBuffer();
}
catch
{
}
archFile.descriptor.uncompressedSize = (uint)inputMS.Length;
WriteFileToArchive(archFile, outputMS);
}
else if (archFile.descriptor.compressionMethod == 0 || true) //No compression
{
archFile.descriptor.compressionMethod = 0;
CopyStream(inputMS, outputMS);
archFile.descriptor.uncompressedSize = (uint)inputMS.Length;
WriteFileToArchive(archFile, outputMS);
}
}
/// <summary>
/// Compress a byte
/// </summary>
public static byte[] Compress(byte[] data)
{
try
{
if (data == null)
{
return(null);
}
var memoryStream = new MemoryStream();
using (var zipStream = new Zip.Streams.DeflaterOutputStream(memoryStream, new Zip.Deflater(Zip.Deflater.BEST_COMPRESSION), 131072))
{
zipStream.Write(data, 0, data.Length);
data = memoryStream.ToArray();
}
return(data);
}
catch
{
return(data);
}
}
void CompressPck()
{
string pckFile = textBox2.Text;
string pckFolder = textBox3.Text + "\\";
int pckFolderLength = pckFolder.Length;
//string[] files = Directory.GetFiles("C:\\fw\\", "*.*", SearchOption.AllDirectories);
string[] files = Directory.GetFiles(pckFolder, "*.*", SearchOption.AllDirectories);
int entryCount = files.Length;
int fileTableOffset;
fileTableEntry[] fileTable = new fileTableEntry[entryCount];
int entrySize;
FileStream BinaryFile = new FileStream(pckFile, FileMode.Create, FileAccess.ReadWrite);
BinaryWriter bw = new BinaryWriter(BinaryFile);
bw.Write(1305093103);
bw.Write((int)0); // placeholder for filesize
bw.Write(1453361591);
for (int i = 0; i < entryCount; i++) {
fileTable[i].filePath = files[i].Substring(pckFolderLength);
fileTable[i].fileDataOffset = (int)BinaryFile.Position;
FileStream fs = File.OpenRead(pckFolder+fileTable[i].filePath);
BinaryReader br = new BinaryReader(fs);
fileTable[i].fileDataDecompressedSize = (int)fs.Length;
//textBox1.Text += "\r\n__"+fileTable[i].fileDataDecompressedSize.ToString();
byte[] data = br.ReadBytes(fileTable[i].fileDataDecompressedSize);
//byte[] bytData = System.Text.Encoding.UTF8.GetBytes(strInput);
MemoryStream ms = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(1,false);
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms,defl);
s.Write(data, 0, data.Length);
s.Close();
byte[] dataComp = (byte[])ms.ToArray();
fileTable[i].fileDataCompressedSize = (int)dataComp.Length;
if(fileTable[i].fileDataCompressedSize < fileTable[i].fileDataDecompressedSize)
{
bw.Write(dataComp);
if ( i == 0){
//textBox1.Text += "\r\n--"+BitConverter.ToString(dataComp);
}
}
// no zlib
else
{
bw.Write(data);
}
br.Close();
fs.Close();
for (int m = 0; m < 215; m++) {
bw.Write((byte)0);
}
ShowProgress(entryCount, i+1);
}
fileTableOffset = (int)BinaryFile.Position;
for (int i = 0; i < entryCount; i++) {
byte[] data = new byte[276];
byte[] name = System.Text.Encoding.GetEncoding(936).GetBytes(fileTable[i].filePath);
Array.Copy(name, data, name.Length);
BitConverter.GetBytes(Convert.ToInt32(fileTable[i].fileDataOffset)).CopyTo(data, 260);
BitConverter.GetBytes(Convert.ToInt32(fileTable[i].fileDataDecompressedSize)).CopyTo(data, 264);
BitConverter.GetBytes(Convert.ToInt32(fileTable[i].fileDataCompressedSize)).CopyTo(data, 268);
MemoryStream ms = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(1,false);
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms,defl);
s.Write(data, 0, data.Length);
s.Close();
byte[] dataComp = (byte[])ms.ToArray();
if ( dataComp.Length >= data.Length )
dataComp = data;
entrySize = (int)dataComp.Length;
bw.Write(entrySize ^ KEY_1);
bw.Write(entrySize ^ KEY_2);
bw.Write(dataComp);
ShowProgress(entryCount, i+1);
}
bw.Write((int)-1526153788);
bw.Write((short)2);
bw.Write((short)2);
bw.Write(fileTableOffset ^ KEY_1);
bw.Write((int)0);
bw.Write(System.Text.Encoding.GetEncoding(936).GetBytes("Angelica File Package, Perfect World."));
for (int i = 0; i < 215; i++) {
bw.Write((byte)0);
}
bw.Write((int)-2060097592);
bw.Write((int)entryCount);
bw.Write((short)2);
bw.Write((short)2);
int fileSize = (int)BinaryFile.Position;
BinaryFile.Seek(4, SeekOrigin.Begin);
bw.Write(fileSize);
//textBox1.Text += "\r\n__"+BinaryFile.Position.ToString();
bw.Close();
BinaryFile.Close();
label4.Text = entryCount.ToString()+" file(s) compressed";
}
void PatchPck(string pckFilename, string filename, byte[] data)
{
FileStream fs = new FileStream(FwInstallPath+pckFilename, FileMode.OpenOrCreate, FileAccess.ReadWrite);
BinaryWriter bw = new BinaryWriter(fs);
BinaryReader br = new BinaryReader(fs);
fs.Seek(-8,SeekOrigin.End);
int entryCount = br.ReadInt32();
fs.Seek(-272,SeekOrigin.End);
int fileTableOffset = br.ReadInt32() ^ KEY_1;
fs.Seek(fileTableOffset,SeekOrigin.Begin);
int entrySize;
fileTableEntry[] fileTable = new fileTableEntry[entryCount];
bool[] toEdit = new bool[entryCount];
int t = 0;
int editedFiles = 0;
for (int i = 0; i < entryCount; i++) {
entrySize = br.ReadInt32() ^ KEY_1;
entrySize = br.ReadInt32() ^ KEY_2;
byte[] hdata = br.ReadBytes(entrySize);
//
if(entrySize < 276)
{
fileTable[i] = readTableEntry(hdata, entrySize, true);
t++;
}
// no zlib
else
{
fileTable[i] = readTableEntry(hdata, entrySize, false);
}
}
textBox1.Text += entryCount.ToString()+"\r\n";
fs.Seek(fileTableOffset,SeekOrigin.Begin); // useless ??
int lastEntryPosition = fileTableOffset;
//int filesCount = (int)files.Length;
for (int i = 0; i < entryCount; i++) {
if ( fileTable[i].filePath != filename ) continue;
nb++;
int newFileDataDecompressedSize = (int)data.Length;
MemoryStream ms = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(1,false);
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms,defl);
s.Write(data, 0, data.Length);
s.Close();
byte[] dataComp = (byte[])ms.ToArray();
ms.Close();
int newFileDataCompressedSize = (int)dataComp.Length;
// test de remplacer un gros png par un truc tout petit incompresible
if ( newFileDataCompressedSize <= fileTable[i].fileDataCompressedSize ){
fs.Seek(fileTable[i].fileDataOffset,SeekOrigin.Begin);
bw.Write(dataComp);
textBox1.Text += fileTable[i].filePath+" Replaced\r\n";
}
else {
fileTable[i].fileDataOffset = lastEntryPosition;
fs.Seek(fileTable[i].fileDataOffset,SeekOrigin.Begin);
bw.Write(dataComp);
lastEntryPosition = (int)fs.Position;
textBox1.Text += fileTable[i].filePath+" Moved to end\r\n";
}
fileTable[i].fileDataCompressedSize = newFileDataCompressedSize;
fileTable[i].fileDataDecompressedSize = newFileDataDecompressedSize;
//ShowProgress(entryCount, i+1);
}
fs.Seek(lastEntryPosition,SeekOrigin.Begin);
fileTableOffset = (int)fs.Position;
for (int i = 0; i < entryCount; i++) {
data = new byte[276];
byte[] name = System.Text.Encoding.GetEncoding(936).GetBytes(fileTable[i].filePath);
Array.Copy(name, data, name.Length);
BitConverter.GetBytes(Convert.ToInt32(fileTable[i].fileDataOffset)).CopyTo(data, 260);
BitConverter.GetBytes(Convert.ToInt32(fileTable[i].fileDataDecompressedSize)).CopyTo(data, 264);
BitConverter.GetBytes(Convert.ToInt32(fileTable[i].fileDataCompressedSize)).CopyTo(data, 268);
MemoryStream ms = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(1,false);
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms,defl);
s.Write(data, 0, data.Length);
s.Close();
byte[] dataComp = (byte[])ms.ToArray();
entrySize = (int)dataComp.Length;
bw.Write(entrySize ^ KEY_1);
bw.Write(entrySize ^ KEY_2);
bw.Write(dataComp);
//ShowProgress(entryCount, i+1);
}
bw.Write((int)-1526153788);
bw.Write((short)2);
bw.Write((short)2);
bw.Write(fileTableOffset ^ KEY_1);
bw.Write((int)0);
bw.Write(System.Text.Encoding.GetEncoding(936).GetBytes("Angelica File Package, Perfect World."));
for (int i = 0; i < 215; i++) {
bw.Write((byte)0);
}
bw.Write((int)-2060097592);
bw.Write((int)entryCount);
bw.Write((short)2);
bw.Write((short)2);
fs.SetLength(fs.Position);
int fileSize = (int)fs.Position;
fs.Seek(4, SeekOrigin.Begin);
bw.Write(fileSize);
br.Close();
bw.Close();
fs.Close();
//textBox1.Text += editedFiles.ToString()+" File(s) patched";
//label4.Text = filesCount.ToString()+" file(s) patched";
}
/// <summary>
/// Replaces a file by a file
/// </summary>
/// <param name="archFile">file to replace</param>
/// <param name="newFile">new file</param>
public void ReplaceFile(FileInArchive archFile, FileStream newFile)
{
byte[] newFileBuffer = new byte[newFile.Length];
newFile.Read(newFileBuffer, 0, newFileBuffer.Length);
MemoryStream inputMS = new MemoryStream(newFileBuffer);
MemoryStream outputMS = new MemoryStream();
byte[] output_buffer = new byte[0];
if (archFile.descriptor.compressionMethod == 1 && false) //ZLib compression
{
try
{
ICSharpCode.SharpZipLib.Zip.Compression.Deflater def = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater();
ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream defstream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(outputMS, def);
defstream.Write(newFileBuffer, 0, newFileBuffer.Length);
defstream.Flush();
defstream.Finish();
output_buffer = outputMS.GetBuffer();
}
catch (Exception)
{
}
archFile.descriptor.uncompressedSize = (uint)inputMS.Length;
WriteFileToArchive(archFile, outputMS);
}
else if (archFile.descriptor.compressionMethod == 0 || true) //No compression
{
archFile.descriptor.compressionMethod = 0;
CopyStream(inputMS, outputMS);
archFile.descriptor.uncompressedSize = (uint)inputMS.Length;
WriteFileToArchive(archFile, outputMS);
}
}
void Button3Click(object sender, EventArgs e)
{
byte[] data = System.Text.Encoding.GetEncoding(936).GetBytes("abcdefghijklmnopqrstyhdzayhdzaydhazudzaduvwxyz");
int dataSize = data.Length;
MemoryStream ms = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(9,false);
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms,defl);
s.Write(data, 0, data.Length);
s.Close();
byte[] dataComp = (byte[])ms.ToArray();
MemoryStream msb = new MemoryStream(dataComp,0,dataComp.Length);
Stream s2 = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.InflaterInputStream(msb);
byte[] dataDec = new byte[dataSize];
s2.Read(dataDec,0,dataSize);
string res = Encoding.GetEncoding(936).GetString(dataDec);
textBox1.Text = dataComp.Length.ToString();
}
/// <summary>
/// Compresses a byte array using the specified compression, and returns a compressed byte array.
/// </summary>
/// <param name="bytes">The input bytes to compress.</param>
/// <param name="offset">The amount of offset to apply to the byte array before beginning compression.</param>
/// <param name="length">The length of bytes to compress in the byte array.</param>
/// <param name="compressionType">Type of the compression to apply.</param>
/// <returns>A byte array representing the compressed byte array</returns>
public static byte[] CompressToBytes(byte[] bytes, int offset, int length, CompressionType compressionType)
{
if (bytes == null || bytes.Length == 0)
return new byte[0];
if (offset < 0)
throw new ArgumentOutOfRangeException("offset", "offset cannot be less than zero");
if (length > bytes.Length)
throw new ArgumentOutOfRangeException("length", "length cannot be greater than bytes.length");
if (length + offset > bytes.Length)
throw new ArgumentOutOfRangeException("length", "length + offset cannot be greater than bytes.length");
using (MemoryStream memoryStream = new MemoryStream()) {
switch (compressionType) {
case CompressionType.BZip:
using (ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream stream = new ICSharpCode.SharpZipLib.BZip2.BZip2OutputStream(memoryStream)) {
stream.Write(bytes, offset, length);
}
break;
case CompressionType.GZip:
using (ICSharpCode.SharpZipLib.GZip.GZipOutputStream stream = new ICSharpCode.SharpZipLib.GZip.GZipOutputStream(memoryStream)) {
stream.Write(bytes, offset, length);
}
break;
// case CompressionType.Tar:
// using (ICSharpCode.SharpZipLib.Tar.TarOutputStream stream = new ICSharpCode.SharpZipLib.Tar.TarOutputStream(memoryStream)) {
// ICSharpCode.SharpZipLib.Tar.TarEntry entry = ICSharpCode.SharpZipLib.Tar.TarEntry.CreateTarEntry("TarEntry");
// entry.Size = length;
// stream.PutNextEntry(entry);
// stream.Write(bytes, offset, length);
// stream.IsStreamOwner = false;
// stream.CloseEntry();
// }
// break;
case CompressionType.Zip:
using (ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream stream = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(memoryStream)) {
stream.Write(bytes, offset, length);
}
break;
default:
return new byte[0];
}
return memoryStream.ToArray();
}
}
/// <summary>
/// Compresses File Content
/// </summary>
/// <param name="ds">File Content to be compressed.</param>
/// <returns>Byte array.</returns>
public static byte[] CompressFileContent(byte[] blobContent)
{
MemoryStream ms2 = new MemoryStream(blobContent);
StreamReader reader = new StreamReader(ms2);
MemoryStream ms3 = new MemoryStream();
string str = reader.ReadToEnd();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(9 , false);
ms2.Position = 0;
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms3, defl);
s.Write(ms2.ToArray(), 0,(int) ms2.Length);
s.Close();
return (byte[])ms3.ToArray();
}
/// <summary>
/// Compresses a DataSet.
/// </summary>
/// <param name="ds">DataSet to be compressed.</param>
/// <param name="schemaOnly">If TRUE, compresses only the schema.</param>
/// <param name="diffGram"></param>
/// <returns>Byte array.</returns>
private static byte[] CompressDataSet(DataSet ds, bool schemaOnly, bool diffGram)
{
SetNeutralDataTable(ds);
MemoryStream ms2 = new MemoryStream();
ICSharpCode.SharpZipLib.Zip.Compression.Deflater defl = new ICSharpCode.SharpZipLib.Zip.Compression.Deflater(9, false);
Stream s = new ICSharpCode.SharpZipLib.Zip.Compression.Streams.DeflaterOutputStream(ms2, defl);
MemoryStream ms3 = new MemoryStream();
if (schemaOnly)
{
ds.WriteXmlSchema(ms3);
}
else
{
ds.WriteXml(ms3, (diffGram) ? XmlWriteMode.DiffGram : XmlWriteMode.WriteSchema);
}
s.Write(ms3.ToArray(), 0, (int)ms3.Length);
s.Close();
return (byte[])ms2.ToArray();
}