SEVENZIP FOLDER COMPRESSION. USING SEVENZIP DLLS

Question

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

Answer 1

sorry took a while to figure out a few things, try this:

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using SevenZip;

using SevenZip.Sdk.Compression.Lzma;

namespace myspace

{

    class MainClass

    {

        public static void Main()

        {

            SevenSync sy = new SevenSync();

            sy.CompressFolder(@"C:\Temp", @"C:\");

        }

    }

    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(destination + Path.DirectorySeparatorChar + fi.Name + @".7z");

            string output_stringBuilder = output_7zip_File.ToString();

            Console.WriteLine("Output destination : " + output_stringBuilder);

            SevenZipCompressor cmp = new SevenZipCompressor();

            SevenZipCompressor.SetLibraryPath(@"C:\Program Files\7-Zip\7z.dll");

            cmp.CompressionMode = CompressionMode.Append;

            foreach (string file in subfiles)

            {

                Console.WriteLine("Files to Compress : " + file);

                // compressor.BeginCompressFiles(output_stringBuilder, file);

                cmp.CompressFiles(output_stringBuilder, file);

            }

        }

    }

}

Answer 2

GOD BLESS U

Answer 3

I am just setting the path for DLL, you can copy/referece the DLL in you project and that can become a part of your deployment. Please make sure you are using 64/32 version of the DLL before you deploy.

Answer 4

I understand where u coming from with this approach this approach... and yea it works!...

However, Its only good if your dealing with data on ur local machine... wheras i was looking for a referenced dll within the solution so the .exe program can be executed from a shatred network.....

any ideas on that?

Answer 5

its still shwoing the same thing bro... i mean the archive is created however when i attemt to open the archive it does not open... its hopwing as a corrupted archive.......any other ideas?

Answer 6

 thanks bro ill check it out now...                

Answer 7

I downloaded the DLL and created my own project to test this and looks like your code is ok, I made one change to use the "destination" variable. Please check this:

using System;

using System.Collections.Generic;

using System.Text;

using System.IO;

using SevenZip;

using SevenZip.Sdk.Compression.Lzma;

namespace myspace

{

    class MainClass

    {

        public static void Main()

        {

            SevenSync sy = new SevenSync();

            sy.CompressFolder(@"C:\Temp",@"C:\");

        }

    }

    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(destination + 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;

            SevenZip.Sdk.CoderPropId[] propIDs =  {

                SevenZip.Sdk.CoderPropId.DictionarySize,

                SevenZip.Sdk.CoderPropId.PosStateBits,

                SevenZip.Sdk.CoderPropId.LitContextBits,

                SevenZip.Sdk.CoderPropId.LitPosBits,

                SevenZip.Sdk.CoderPropId.Algorithm,

                SevenZip.Sdk.CoderPropId.NumFastBytes,

                SevenZip.Sdk.CoderPropId.MatchFinder,

                SevenZip.Sdk.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.Sdk.Compression.Lzma.Encoder encoder = new SevenZip.Sdk.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)

        {

        }

    }

}