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Ervin Slavotic
NA
10
10.1k
SEVENZIP FOLDER COMPRESSION. USING SEVENZIP DLLS
Apr 29 2013 11:37 AM
Hi All,
I need help in this code... for compressing directories in c# using sevensharp dlls.
http://sevenzipsharp.codeplex.com/
...
so far the follwing code will create an empyt archvie... so how to add files to it?...
class SevenSync
{
public void CompressFolder(string FolderToCompress, string destination)
{
List<string> subfiles = new List<string>(Directory.GetFiles(FolderToCompress));
FileInfo fi = new FileInfo(FolderToCompress);
StringBuilder output_7zip_File = new StringBuilder(FolderToCompress + Path.DirectorySeparatorChar + fi.Name + @".7z");
string output_stringBuilder = output_7zip_File.ToString();
Console.WriteLine("Output destination : " + output_stringBuilder);
foreach (string file in subfiles)
{
Console.WriteLine("Files to Compress : " + file);
// compressor.BeginCompressFiles(output_stringBuilder, file);
CompressFileLZMA(file, output_stringBuilder);
AddToArchive(file);
}
}
//___________________________________________________________
////////////////////////////////////////////////////////////|
// C O M P R E S S F I L E |
//_________using LZMA algo__________________________________|
////////////////////////////////////////////////////////////|
public void CompressFileLZMA(string inFile, string outFile)
{
Int32 dictionary = 1 << 23;
Int32 posStateBits = 2;
Int32 litContextBits = 3; // for normal files
// UInt32 litContextBits = 0; // for 32-bit data
Int32 litPosBits = 0;
// UInt32 litPosBits = 2; // for 32-bit data
Int32 algorithm = 2;
Int32 numFastBytes = 128;
string mf = "bt4";
bool eos = true;
bool stdInMode = false;
CoderPropID[] propIDs = {
CoderPropID.DictionarySize,
CoderPropID.PosStateBits,
CoderPropID.LitContextBits,
CoderPropID.LitPosBits,
CoderPropID.Algorithm,
CoderPropID.NumFastBytes,
CoderPropID.MatchFinder,
CoderPropID.EndMarker
};
object[] properties = {
(Int32)(dictionary),
(Int32)(posStateBits),
(Int32)(litContextBits),
(Int32)(litPosBits),
(Int32)(algorithm),
(Int32)(numFastBytes),
mf,
eos
};
try
{
using (FileStream inStream = new FileStream(inFile, FileMode.Open))
{
using (FileStream outStream = new FileStream(outFile, FileMode.Create))
{
SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();
encoder.SetCoderProperties(propIDs, properties);
encoder.WriteCoderProperties(outStream);
Int64 fileSize;
if (eos || stdInMode)
fileSize = -1;
else
fileSize = inStream.Length;
for (int i = 0; i < 8; i++)
{
outStream.WriteByte((Byte)(fileSize >> (8 * i)));
}
encoder.Code(inStream, outStream, -1, -1, null);
}
}
}
catch (Exception e)
{
Console.WriteLine("ERROR : " + e.Message);
}
}
//___________________________________________________________
////////////////////////////////////////////////////////////|
// A D D TO A R C H I V E |
//__________________________________________________________|
////////////////////////////////////////////////////////////|
public void AddToArchive(string archiveFile)
{
}
}
thanks alot
regards
Reply
Answers (
1
)
Polymorphism
SEVENZIP FOLDER COMPRESSION. USING SEVENZIP DLLS