Very early SevenZip WIP version

ROMVault2/DatReaders/DatCmpReader.cs

@@ -7,6 +7,7 @@
 using System;
 using System.ComponentModel;
 using System.IO;
+using System.Text;
 using ROMVault2.Properties;
 using ROMVault2.RvDB;
 using ROMVault2.Utils;
@@ -548,7 +549,7 @@ namespace ROMVault2.DatReaders
                 int errorCode = IO.FileStream.OpenFileRead(strFilename, out _fileStream);
                 if (errorCode != 0)
                     return errorCode;
-                _streamReader = new StreamReader(_fileStream, Program.Enc);
+                _streamReader = new StreamReader(_fileStream, Encoding.UTF8);
                 return 0;
             }
             public static void Close()
@@ -578,7 +579,7 @@ namespace ROMVault2.DatReaders
                 while ((_line.Trim().Length == 0) && (!_streamReader.EndOfStream))
                 {
                     _line = _streamReader.ReadLine();
-                    _line = (_line??"").Replace("" + (char)9, " ");
+                    _line = (_line ?? "").Replace("" + (char)9, " ");
                     if (_line.TrimStart().Length > 2 && _line.TrimStart().Substring(0, 2) == @"//") _line = "";
                     if (_line.TrimStart().Length > 1 && _line.TrimStart().Substring(0, 1) == @"#") _line = "";
                     if (_line.TrimStart().Length > 1 && _line.TrimStart().Substring(0, 1) == @";") _line = "";

ROMVault2/DatReaders/DatXMLReader.cs

@@ -124,6 +124,12 @@ namespace ROMVault2.DatReaders
                             tDat.AddData(RvDat.DatData.FileType, "zip");
                             thisFileType = FileType.ZipFile;
                             break;
+#if sevenzip
+                        case "7z":
+                            tDat.AddData(RvDat.DatData.FileType, "7z");
+                            thisFileType = FileType.SevenZipFile;
+                            break;
+#endif
                         case "unzip":
                         case "file":
                             tDat.AddData(RvDat.DatData.FileType, "file");

ROMVault2/DatUpdate.cs

@@ -284,7 +284,7 @@ namespace ROMVault2
 
             FileType ft = dbDir.FileType;
             // if we are checking a dir or zip recurse into it.
-            if (ft != FileType.Zip && ft != FileType.Dir) return EFile.Keep;
+            if (ft != FileType.Zip && ft != FileType.Dir && ft!=FileType.SevenZip) return EFile.Keep;
             RvDir tDir = dbDir as RvDir;
 
             // remove all DATStatus's here they will get set back correctly when adding dats back in below.
@@ -296,7 +296,7 @@ namespace ROMVault2
                 tDir.ChildRemove(i);
                 i--;
             }
-            if (ft == FileType.Zip && dbDir.GotStatus == GotStatus.Corrupt) return EFile.Keep;
+            if ((ft == FileType.Zip || ft==FileType.SevenZip) && dbDir.GotStatus == GotStatus.Corrupt) return EFile.Keep;
 
             // if this directory is now empty it should be deleted
             return tDir.ChildCount == 0 ? EFile.Delete : EFile.Keep;
@@ -544,7 +544,7 @@ namespace ROMVault2
 
                                 FileType ft = dbChild.FileType;
 
-                                if (ft == FileType.Zip || ft == FileType.Dir)
+                                if (ft == FileType.Zip || ft==FileType.SevenZip || ft == FileType.Dir)
                                 {
                                     RvDir dChild = (RvDir)dbChild;
                                     RvDir dNewChild = (RvDir)newDatChild;
@@ -605,7 +605,7 @@ namespace ROMVault2
 
 
             FileType ft = dbChild.FileType;
-            if (ft == FileType.Zip || ft == FileType.Dir)
+            if (ft == FileType.Zip || ft == FileType.Dir || ft==FileType.SevenZip)
             {
                 RvDir dbDir = (RvDir)dbChild;
                 for (int i = 0; i < dbDir.ChildCount; i++)
@@ -627,7 +627,7 @@ namespace ROMVault2
             // filetypes are now know to be the same
 
             // Dir's and Zip's are not deep scanned so matching here is done
-            if ((v1 == FileType.Dir) || (v1 == FileType.Zip))
+            if ((v1 == FileType.Dir) || (v1 == FileType.Zip) || (v1==FileType.SevenZip))
                 return true;
 
             RvFile f1 = (RvFile)var1;

ROMVault2/FileScanning.cs

@@ -15,6 +15,7 @@ using ROMVault2.RvDB;
 using ROMVault2.SupportedFiles;
 using ROMVault2.SupportedFiles.CHD;
 using ROMVault2.SupportedFiles.Files;
+using ROMVault2.SupportedFiles.SevenZip;
 using ROMVault2.SupportedFiles.Zip;
 using ROMVault2.Utils;
 using FileInfo = ROMVault2.IO.FileInfo;
@@ -140,11 +141,16 @@ namespace ROMVault2
             switch (ft)
             {
                 case FileType.Zip:
+                case FileType.SevenZip:
                     {
                         fileDir = new RvDir(ft);
 
                         // open the zip file
-                        ZipFile checkZ = new ZipFile();
+                        ICompress checkZ;
+                        if (ft == FileType.Zip)
+                            checkZ = new ZipFile();
+                        else
+                            checkZ = new SevenZ();
 
                         ZipReturn zr = checkZ.ZipFileOpen(fullDir, dbDir.TimeStamp, true);
 
@@ -251,6 +257,19 @@ namespace ROMVault2
                             string fExt = Path.GetExtension(oFile.Name);
                             switch (fExt.ToLower())
                             {
+#if sevenzip
+                                case ".7z":
+                                    {
+                                        RvDir tGame = new RvDir(FileType.SevenZip)
+                                        {
+                                            Name = Path.GetFileNameWithoutExtension(oFile.Name),
+                                            TimeStamp = oFile.LastWriteTime,
+                                        };
+                                        tGame.SetStatus(chechingDatStatus, GotStatus.Got);
+                                        fileDir.ChildAdd(tGame);
+                                    }
+                                    break;
+#endif
                                 case ".zip":
                                     {
                                         RvDir tGame = new RvDir(FileType.Zip)
@@ -510,6 +529,7 @@ namespace ROMVault2
             switch (dbChild.FileType)
             {
                 case FileType.Zip:
+                case FileType.SevenZip:
                     if (dbChild.TimeStamp != fileChild.TimeStamp || EScanLevel == eScanLevel.Level3 ||
                         (EScanLevel == eScanLevel.Level2 && !IsDeepScanned((RvDir)dbChild)))
                     {
@@ -530,6 +550,7 @@ namespace ROMVault2
                     break;
                 case FileType.File:
                 case FileType.ZipFile:
+                case FileType.SevenZipFile:
                     if (dbChild.TimeStamp == fileChild.TimeStamp && dbChild.GotStatus == GotStatus.Corrupt)
                         fileChild.GotStatus = GotStatus.Corrupt;
 
@@ -555,6 +576,7 @@ namespace ROMVault2
             switch (fileChild.FileType)
             {
                 case FileType.Zip:
+                case FileType.SevenZip:
                     dbDir.ChildAdd(fileChild, dbIndex);
                     CheckADir((RvDir)fileChild, false);
                     break;
@@ -576,6 +598,7 @@ namespace ROMVault2
                     dbDir.ChildAdd(fileChild, dbIndex);
                     break;
                 case FileType.ZipFile:
+                case FileType.SevenZipFile:
                     dbDir.ChildAdd(fileChild, dbIndex);
                     break;
                 default:
@@ -669,7 +692,7 @@ namespace ROMVault2
             // filetypes are now know to be the same
 
             // Dir's and Zip's are not deep scanned so matching here is done
-            if ((dbfileType == FileType.Dir) || (dbfileType == FileType.Zip))
+            if ((dbfileType == FileType.Dir) || (dbfileType == FileType.Zip) || (dbfileType==FileType.SevenZip))
                 return true;
 
             RvFile dbFileF = (RvFile)dbFile;

ROMVault2/FixFileCopy.cs

@@ -7,9 +7,12 @@
 using System;
 using System.ComponentModel;
 using System.Diagnostics;
+using System.Drawing;
+using System.IO;
 using System.Security.Cryptography;
 using ROMVault2.RvDB;
 using ROMVault2.SupportedFiles;
+using ROMVault2.SupportedFiles.SevenZip;
 using ROMVault2.SupportedFiles.Zip;
 using ROMVault2.SupportedFiles.Zip.ZLib;
 using ROMVault2.Utils;
@@ -44,7 +47,7 @@ namespace ROMVault2
         /// <param name="foundFile">If we are SHA1/MD5 checking the source file for the first time, and it is different from what we expected the correct values for this file are returned in foundFile</param>
         /// <returns>ReturnCode.Good is the valid return code otherwire we have an error</returns>
 
-        public static ReturnCode CopyFile(RvFile fileIn, ref ZipFile zipFileOut, string zipFilenameOut, RvFile fileOut, bool forceRaw, out string error, out RvFile foundFile)
+        public static ReturnCode CopyFile(RvFile fileIn, ref ICompress zipFileOut, string zipFilenameOut, RvFile fileOut, bool forceRaw, out string error, out RvFile foundFile)
         {
             foundFile = null;
             error = "";
@@ -59,120 +62,21 @@ namespace ROMVault2
             bool sourceTrrntzip = false;
 
 
-            ZipFile zipFileIn = null;
+            ICompress zipFileIn = null;
-            System.IO.Stream readStream = null;
+            Stream readStream = null;
+            ReturnCode retC;
 
 
             bool isZeroLengthFile = DBHelper.IsZeroLengthFile(fileOut);
             if (!isZeroLengthFile)
             {
-                #region check that the in and out file match
+                retC = CheckInputAndOutputFile(fileIn, fileOut, out error);
-                if (fileOut.FileStatusIs(FileStatus.SizeFromDAT) && fileOut.Size != null && fileIn.Size != fileOut.Size)
+                if (retC != ReturnCode.Good)
-                {
+                    return retC;
-                    error = "Source and destination Size does not match. Logic Error.";
-                    return ReturnCode.LogicError;
-                }
-                if (fileOut.FileStatusIs(FileStatus.CRCFromDAT) && fileOut.CRC != null && !ArrByte.bCompare(fileIn.CRC, fileOut.CRC))
-                {
-                    error = "Source and destination CRC does not match. Logic Error.";
-                    return ReturnCode.LogicError;
-                }
 
-                if (fileOut.FileStatusIs(FileStatus.SHA1FromDAT) && fileIn.FileStatusIs(FileStatus.SHA1Verified))
+                retC = OpenInputStream(fileIn, rawCopy, out zipFileIn, out sourceTrrntzip, out readStream, out streamSize, out compressionMethod, out error);
-                {
+                if (retC != ReturnCode.Good)
-                    if (fileIn.SHA1 != null && fileOut.SHA1 != null && !ArrByte.bCompare(fileIn.SHA1, fileOut.SHA1))
+                    return retC;
-                    {
-                        error = "Source and destination SHA1 does not match. Logic Error.";
-                        return ReturnCode.LogicError;
-                    }
-                }
-                if (fileOut.FileStatusIs(FileStatus.MD5CHDFromDAT) && fileIn.FileStatusIs(FileStatus.MD5Verified))
-                {
-                    if (fileIn.MD5 != null && fileOut.MD5 != null && !ArrByte.bCompare(fileIn.MD5, fileOut.MD5))
-                    {
-                        error = "Source and destination SHA1 does not match. Logic Error.";
-                        return ReturnCode.LogicError;
-                    }
-                }
-
-                #endregion
-
-                #region Find and Check/Open Input Files
-
-                if (fileIn.FileType == FileType.ZipFile) // Input is a ZipFile
-                {
-                    RvDir zZipFileIn = fileIn.Parent;
-                    if (zZipFileIn.FileType != FileType.Zip)
-                    {
-                        error = "Zip File Open but Source File is not a zip, Logic Error.";
-                        return ReturnCode.LogicError;
-                    }
-
-                    string fileNameIn = zZipFileIn.FullName;
-
-                    sourceTrrntzip = (zZipFileIn.ZipStatus & ZipStatus.TrrntZip) == ZipStatus.TrrntZip;
-
-                    //if (zZipFileIn.ZipFileType == RvZip.ZipType.Zip)
-                    //{
-                    zipFileIn = new ZipFile();
-
-                    ZipReturn zr1;
-                    if (fileIn.ZipFileHeaderPosition != null)
-                        zr1 = zipFileIn.ZipFileOpen(fileNameIn, zZipFileIn.TimeStamp, false);
-                    else
-                        zr1 = zipFileIn.ZipFileOpen(fileNameIn, zZipFileIn.TimeStamp, true);
-                    switch (zr1)
-                    {
-                        case ZipReturn.ZipGood:
-                            break;
-                        case ZipReturn.ZipErrorFileNotFound:
-                            error = "File not found, Rescan required before fixing " + fileIn.Name;
-                            return ReturnCode.FileSystemError;
-                        case ZipReturn.ZipErrorTimeStamp:
-                            error = "File has changed, Rescan required before fixing " + fileIn.Name;
-                            return ReturnCode.FileSystemError;
-                        default:
-                            error = "Error Open Zip" + zr1 + ", with File " + fileIn.DatFullName;
-                            return ReturnCode.FileSystemError;
-                    }
-                    if (fileIn.ZipFileHeaderPosition != null)
-                        zipFileIn.ZipFileOpenReadStreamQuick((ulong)fileIn.ZipFileHeaderPosition, rawCopy, out readStream, out streamSize, out compressionMethod);
-                    else
-                        zipFileIn.ZipFileOpenReadStream(fileIn.ZipFileIndex, rawCopy, out readStream, out streamSize, out compressionMethod);
-                }
-                else // Input is a regular file
-                {
-                    string fileNameIn = fileIn.FullName;
-                    if (!IO.File.Exists(fileNameIn))
-                    {
-                        error = "Rescan needed, File Changed :" + fileNameIn;
-                        return ReturnCode.RescanNeeded;
-                    }
-                    IO.FileInfo fileInInfo = new IO.FileInfo(fileNameIn);
-                    if (fileInInfo.LastWriteTime != fileIn.TimeStamp)
-                    {
-                        error = "Rescan needed, File Changed :" + fileNameIn;
-                        return ReturnCode.RescanNeeded;
-                    }
-                    int errorCode = IO.FileStream.OpenFileRead(fileNameIn, out readStream);
-                    if (errorCode != 0)
-                    {
-                        error = new Win32Exception(errorCode).Message + ". " + fileNameIn;
-                        return ReturnCode.FileSystemError;
-                    }
-                    if (fileIn.Size == null)
-                    {
-                        error = "Null File Size found in Fixing File :" + fileNameIn;
-                        return ReturnCode.LogicError;
-                    }
-                    streamSize = (ulong)fileIn.Size;
-                    if ((ulong)readStream.Length != streamSize)
-                    {
-                        error = "Rescan needed, File Length Changed :" + fileNameIn;
-                        return ReturnCode.RescanNeeded;
-                    }
-                }
-                #endregion
             }
             else
             {
@@ -184,72 +88,12 @@ namespace ROMVault2
 
             #region Find and Check/Open Output Files
 
-            System.IO.Stream writeStream;
+            Stream writeStream;
-            if (fileOut.FileType == FileType.ZipFile)
-            {
-                // if ZipFileOut == null then we have not open the output zip yet so open it from writing.
-                if (zipFileOut == null)
-                {
-                    if (IO.Path.GetFileName(zipFilenameOut) == "__RomVault.tmp")
-                    {
-                        if (IO.File.Exists(zipFilenameOut))
-                            IO.File.Delete(zipFilenameOut);
-                    }
-                    else if (IO.File.Exists(zipFilenameOut))
-                    {
-                        error = "Rescan needed, File Changed :" + zipFilenameOut;
-                        return ReturnCode.RescanNeeded;
-                    }
 
-                    zipFileOut = new ZipFile();
+            retC = OpenOutputStream(fileOut, fileIn, ref zipFileOut, zipFilenameOut, compressionMethod, rawCopy, sourceTrrntzip, out writeStream, out error);
-                    ZipReturn zrf = zipFileOut.ZipFileCreate(zipFilenameOut);
+            if (retC != ReturnCode.Good)
-                    if (zrf != ZipReturn.ZipGood)
+                return retC;
-                    {
-                        error = "Error Opening Write Stream " + zrf;
-                        return ReturnCode.FileSystemError;
-                    }
-                }
-                else
-                {
-                    if (zipFileOut.ZipOpen != ZipOpenType.OpenWrite)
-                    {
-                        error = "Output Zip File is not set to OpenWrite, Logic Error.";
-                        return ReturnCode.LogicError;
-                    }
 
-                    if (zipFileOut.ZipFilename != (new IO.FileInfo(zipFilenameOut).FullName))
-                    {
-                        error = "Output Zip file has changed name from " + zipFileOut.ZipFilename + " to " + zipFilenameOut + ". Logic Error";
-                        return ReturnCode.LogicError;
-                    }
-                }
-
-                if (fileIn.Size == null)
-                {
-                    error = "Null File Size found in Fixing File :" + fileIn.FullName;
-                    return ReturnCode.LogicError;
-                }
-                ZipReturn zr = zipFileOut.ZipFileOpenWriteStream(rawCopy, sourceTrrntzip, fileOut.Name, (ulong)fileIn.Size, compressionMethod, out writeStream);
-                if (zr != ZipReturn.ZipGood)
-                {
-                    error = "Error Opening Write Stream " + zr;
-                    return ReturnCode.FileSystemError;
-                }
-            }
-            else
-            {
-                if (IO.File.Exists(zipFilenameOut) && fileOut.GotStatus != GotStatus.Corrupt)
-                {
-                    error = "Rescan needed, File Changed :" + zipFilenameOut;
-                    return ReturnCode.RescanNeeded;
-                }
-                int errorCode = IO.FileStream.OpenFileWrite(zipFilenameOut, out writeStream);
-                if (errorCode != 0)
-                {
-                    error = new Win32Exception(errorCode).Message + ". " + zipFilenameOut;
-                    return ReturnCode.FileSystemError;
-                }
-            }
             #endregion
 
             byte[] bCRC;
@@ -374,7 +218,7 @@ namespace ROMVault2
 
                 #region close the ReadStream
 
-                if (fileIn.FileType == FileType.ZipFile && zipFileIn != null)
+                if ((fileIn.FileType == FileType.ZipFile || fileIn.FileType == FileType.SevenZipFile) && zipFileIn != null)
                 {
                     ZipReturn zr = zipFileIn.ZipFileCloseReadStream();
                     if (zr != ZipReturn.ZipGood)
@@ -408,7 +252,7 @@ namespace ROMVault2
 
 
             #region close the WriteStream
-            if (fileOut.FileType == FileType.ZipFile)
+            if (fileOut.FileType == FileType.ZipFile || fileOut.FileType == FileType.SevenZipFile)
             {
                 ZipReturn zr = zipFileOut.ZipFileCloseWriteStream(bCRC);
                 if (zr != ZipReturn.ZipGood)
@@ -516,7 +360,7 @@ namespace ROMVault2
 
                     if (sourceFailed)
                     {
-                        if (fileIn.FileType == FileType.ZipFile)
+                        if (fileIn.FileType == FileType.ZipFile || fileIn.FileType == FileType.SevenZipFile)
                         {
                             RvFile tZFile = new RvFile(FileType.ZipFile);
                             foundFile = tZFile;
@@ -548,7 +392,7 @@ namespace ROMVault2
                 }
             }
 
-            if (fileOut.FileType == FileType.ZipFile)
+            if (fileOut.FileType == FileType.ZipFile || fileOut.FileType == FileType.SevenZipFile)
             {
                 fileOut.FileStatusSet(FileStatus.SizeFromHeader | FileStatus.CRCFromHeader);
             }
@@ -671,5 +515,227 @@ namespace ROMVault2
             return false;
         }
 
+
+        private static ReturnCode CheckInputAndOutputFile(RvFile fileIn, RvFile fileOut, out string error)
+        {
+            if (fileOut.FileStatusIs(FileStatus.SizeFromDAT) && fileOut.Size != null && fileIn.Size != fileOut.Size)
+            {
+                error = "Source and destination Size does not match. Logic Error.";
+                return ReturnCode.LogicError;
+            }
+            if (fileOut.FileStatusIs(FileStatus.CRCFromDAT) && fileOut.CRC != null && !ArrByte.bCompare(fileIn.CRC, fileOut.CRC))
+            {
+                error = "Source and destination CRC does not match. Logic Error.";
+                return ReturnCode.LogicError;
+            }
+
+            if (fileOut.FileStatusIs(FileStatus.SHA1FromDAT) && fileIn.FileStatusIs(FileStatus.SHA1Verified))
+            {
+                if (fileIn.SHA1 != null && fileOut.SHA1 != null && !ArrByte.bCompare(fileIn.SHA1, fileOut.SHA1))
+                {
+                    error = "Source and destination SHA1 does not match. Logic Error.";
+                    return ReturnCode.LogicError;
+                }
+            }
+            if (fileOut.FileStatusIs(FileStatus.MD5CHDFromDAT) && fileIn.FileStatusIs(FileStatus.MD5Verified))
+            {
+                if (fileIn.MD5 != null && fileOut.MD5 != null && !ArrByte.bCompare(fileIn.MD5, fileOut.MD5))
+                {
+                    error = "Source and destination SHA1 does not match. Logic Error.";
+                    return ReturnCode.LogicError;
+                }
+            }
+            error = "";
+            return ReturnCode.Good;
+        }
+
+        private static ReturnCode OpenInputStream(RvFile fileIn, bool rawCopy, out ICompress zipFileIn, out bool sourceTrrntzip, out Stream readStream, out ulong streamSize, out ushort compressionMethod, out string error)
+        {
+            zipFileIn = null;
+            sourceTrrntzip = false;
+            readStream = null;
+            streamSize = 0;
+            compressionMethod = 0;
+
+            switch (fileIn.FileType)
+            {
+                case FileType.SevenZipFile:
+                case FileType.ZipFile:
+                    {
+                        RvDir zZipFileIn = fileIn.Parent;
+                        if (zZipFileIn.FileType != DBTypeGet.DirFromFile(fileIn.FileType))
+                        {
+                            error = "SevenZip File Open but Source File is not a SevenZip, Logic Error.";
+                            return ReturnCode.LogicError;
+                        }
+
+                        string fileNameIn = zZipFileIn.FullName;
+                        ZipReturn zr1;
+
+                        if (fileIn.FileType == FileType.SevenZipFile)
+                        {
+                            sourceTrrntzip = false;
+                            zipFileIn = new SevenZ();
+                            zr1 = zipFileIn.ZipFileOpen(fileNameIn, zZipFileIn.TimeStamp, true);
+                        }
+                        else
+                        {
+                            sourceTrrntzip = (zZipFileIn.ZipStatus & ZipStatus.TrrntZip) == ZipStatus.TrrntZip;
+                            zipFileIn = new ZipFile();
+                            zr1 = zipFileIn.ZipFileOpen(fileNameIn, zZipFileIn.TimeStamp, fileIn.ZipFileHeaderPosition == null);
+                        }
+
+                        switch (zr1)
+                        {
+                            case ZipReturn.ZipGood:
+                                break;
+                            case ZipReturn.ZipErrorFileNotFound:
+                                error = "File not found, Rescan required before fixing " + fileIn.Name;
+                                return ReturnCode.FileSystemError;
+                            case ZipReturn.ZipErrorTimeStamp:
+                                error = "File has changed, Rescan required before fixing " + fileIn.Name;
+                                return ReturnCode.FileSystemError;
+                            default:
+                                error = "Error Open Zip" + zr1 + ", with File " + fileIn.DatFullName;
+                                return ReturnCode.FileSystemError;
+                        }
+
+                        if (fileIn.FileType == FileType.SevenZipFile)
+                        {
+
+                            SevenZ z = zipFileIn as SevenZ;
+                            z.ZipFileOpenReadStream(fileIn.ZipFileIndex, out readStream, out streamSize);
+                        }
+                        else
+                        {
+                            ZipFile z = zipFileIn as ZipFile;
+                            if (fileIn.ZipFileHeaderPosition != null)
+                                z.ZipFileOpenReadStreamQuick((ulong)fileIn.ZipFileHeaderPosition, rawCopy, out readStream, out streamSize, out compressionMethod);
+                            else
+                                z.ZipFileOpenReadStream(fileIn.ZipFileIndex, rawCopy, out readStream, out streamSize, out compressionMethod);
+                        }
+                    }
+                    break;
+                default:
+                    {
+                        string fileNameIn = fileIn.FullName;
+                        if (!IO.File.Exists(fileNameIn))
+                        {
+                            error = "Rescan needed, File Changed :" + fileNameIn;
+                            return ReturnCode.RescanNeeded;
+                        }
+                        IO.FileInfo fileInInfo = new IO.FileInfo(fileNameIn);
+                        if (fileInInfo.LastWriteTime != fileIn.TimeStamp)
+                        {
+                            error = "Rescan needed, File Changed :" + fileNameIn;
+                            return ReturnCode.RescanNeeded;
+                        }
+                        int errorCode = IO.FileStream.OpenFileRead(fileNameIn, out readStream);
+                        if (errorCode != 0)
+                        {
+                            error = new Win32Exception(errorCode).Message + ". " + fileNameIn;
+                            return ReturnCode.FileSystemError;
+                        }
+                        if (fileIn.Size == null)
+                        {
+                            error = "Null File Size found in Fixing File :" + fileNameIn;
+                            return ReturnCode.LogicError;
+                        }
+                        streamSize = (ulong)fileIn.Size;
+                        if ((ulong)readStream.Length != streamSize)
+                        {
+                            error = "Rescan needed, File Length Changed :" + fileNameIn;
+                            return ReturnCode.RescanNeeded;
+                        }
+                    }
+                    break;
+            }
+
+            error = "";
+            return ReturnCode.Good;
+        }
+
+        private static ReturnCode OpenOutputStream(RvFile fileOut, RvFile fileIn, ref ICompress zipFileOut, string zipFilenameOut, ushort compressionMethod, bool rawCopy, bool sourceTrrntzip, out System.IO.Stream writeStream, out string error)
+        {
+            writeStream = null;
+
+            switch (fileOut.FileType)
+            {
+                case FileType.ZipFile:
+                case FileType.SevenZipFile:
+                    {
+                        // if ZipFileOut == null then we have not open the output zip yet so open it from writing.
+                        if (zipFileOut == null)
+                        {
+                            if (IO.Path.GetFileName(zipFilenameOut) == "__RomVault.tmp")
+                            {
+                                if (IO.File.Exists(zipFilenameOut))
+                                    IO.File.Delete(zipFilenameOut);
+                            }
+                            else if (IO.File.Exists(zipFilenameOut))
+                            {
+                                error = "Rescan needed, File Changed :" + zipFilenameOut;
+                                return ReturnCode.RescanNeeded;
+                            }
+                            if (fileOut.FileType == FileType.ZipFile)
+                                zipFileOut = new ZipFile();
+                            else
+                                zipFileOut = new SevenZ();
+
+                            ZipReturn zrf = zipFileOut.ZipFileCreate(zipFilenameOut);
+                            if (zrf != ZipReturn.ZipGood)
+                            {
+                                error = "Error Opening Write Stream " + zrf;
+                                return ReturnCode.FileSystemError;
+                            }
+                        }
+                        else
+                        {
+                            if (zipFileOut.ZipOpen != ZipOpenType.OpenWrite)
+                            {
+                                error = "Output Zip File is not set to OpenWrite, Logic Error.";
+                                return ReturnCode.LogicError;
+                            }
+
+                            if (zipFileOut.ZipFilename != (new IO.FileInfo(zipFilenameOut).FullName))
+                            {
+                                error = "Output Zip file has changed name from " + zipFileOut.ZipFilename + " to " + zipFilenameOut + ". Logic Error";
+                                return ReturnCode.LogicError;
+                            }
+                        }
+
+                        if (fileIn.Size == null)
+                        {
+                            error = "Null File Size found in Fixing File :" + fileIn.FullName;
+                            return ReturnCode.LogicError;
+                        }
+                        ZipReturn zr = zipFileOut.ZipFileOpenWriteStream(rawCopy, sourceTrrntzip, fileOut.Name, (ulong)fileIn.Size, compressionMethod, out writeStream);
+                        if (zr != ZipReturn.ZipGood)
+                        {
+                            error = "Error Opening Write Stream " + zr;
+                            return ReturnCode.FileSystemError;
+                        }
+                    }
+                    break;
+                default:
+                    {
+                        if (IO.File.Exists(zipFilenameOut) && fileOut.GotStatus != GotStatus.Corrupt)
+                        {
+                            error = "Rescan needed, File Changed :" + zipFilenameOut;
+                            return ReturnCode.RescanNeeded;
+                        }
+                        int errorCode = IO.FileStream.OpenFileWrite(zipFilenameOut, out writeStream);
+                        if (errorCode != 0)
+                        {
+                            error = new Win32Exception(errorCode).Message + ". " + zipFilenameOut;
+                            return ReturnCode.FileSystemError;
+                        }
+                    }
+                    break;
+            }
+
+            error = "";
+            return ReturnCode.Good;
+        }
     }
 }

ROMVault2/FixFiles.cs

@@ -14,6 +14,7 @@ using ROMVault2.Properties;
 using ROMVault2.RvDB;
 using ROMVault2.SupportedFiles;
 using ROMVault2.SupportedFiles.Zip;
+using ROMVault2.Utils;
 
 namespace ROMVault2
 {
@@ -133,6 +134,7 @@ namespace ROMVault2
                 switch (child.FileType)
                 {
                     case FileType.Zip:
+                    case FileType.SevenZip:
                         if (!thisSelected)
                             continue;
                         RvDir tZip = (RvDir)child;
@@ -230,6 +232,23 @@ namespace ROMVault2
                     } while (returnCode == ReturnCode.StartOver);
                     break;
 
+                case FileType.SevenZip:
+                    if (!thisSelected)
+                        return ReturnCode.Good;
+
+                    if (!String.IsNullOrEmpty(child.FileName))
+                    {
+                        string strDir = child.Parent.FullName;
+                        File.Move(Path.Combine(strDir, child.FileName + ".z7"), Path.Combine(strDir, child.Name + ".z7"));
+                        child.FileName = null;
+                    }
+
+                    do
+                    {
+                        returnCode = FixZip((RvDir)child);
+                    } while (returnCode == ReturnCode.StartOver);
+                    break;
+
                 case FileType.Dir:
                     if (thisSelected)
                     {
@@ -418,7 +437,7 @@ namespace ROMVault2
 
             ReportProgress(new bgwShowFix(Path.GetDirectoryName(fixFileFullName), "", Path.GetFileName(fixFileFullName), fixFile.Size, "-->", "ToSort", "", fixFile.Name));
 
-            ZipFile tempZipOut = null;
+            ICompress tempZipOut = null;
             RvFile foundFile;
             ReturnCode returnCode = FixFileCopy.CopyFile(fixFile, ref tempZipOut, toSortFullName, toSortRom, false, out _error, out foundFile);
             switch (returnCode)
@@ -481,7 +500,7 @@ namespace ROMVault2
 
             _bgw.ReportProgress(0, new bgwShowFix(Path.GetDirectoryName(fixFileFullName), "", Path.GetFileName(fixFileFullName), fixFile.Size, "-->", "Corrupt", "", fixFile.Name));
 
-            ZipFile tempZipOut = null;
+            ICompress tempZipOut = null;
             RvFile foundFile;
             ReturnCode returnCode = FixFileCopy.CopyFile(fixFile, ref tempZipOut, toSortCorruptFullName, toSortCorruptRom, false, out _error, out foundFile);
             switch (returnCode)
@@ -642,7 +661,7 @@ namespace ROMVault2
 
 
             // now we can fix the file.
-            ZipFile tempZipOut = null;
+            ICompress tempZipOut = null;
             RvFile foundFile;
             ReturnCode returnCode;
 
@@ -851,7 +870,8 @@ namespace ROMVault2
                 return ReturnCode.Good;
             }
 
-
+            if (!fixZip.DirStatus.HasFixable() && needsTrrntzipped && fixZip.FileType == FileType.SevenZip)
+                return ReturnCode.Good;
 
             string fixZipFullName = fixZip.TreeFullName;
 
@@ -869,10 +889,10 @@ namespace ROMVault2
                 ReportError.LogOut((RvFile)fixZip.Child(intLoop));
             ReportError.LogOut("");
 
-            ZipFile tempZipOut = null;
+            ICompress tempZipOut = null;
 
-            ZipFile toSortCorruptOut = null;
+            ICompress toSortCorruptOut = null;
-            ZipFile toSortZipOut = null;
+            ICompress toSortZipOut = null;
 
             RvDir toSortGame = null;
             RvDir toSortCorruptGame = null;
@@ -880,9 +900,11 @@ namespace ROMVault2
             ReturnCode returnCode;
             List<RvFile> fixZipTemp = new List<RvFile>();
 
+            FileType fixFileType = fixZip.FileType;
+
             for (int iRom = 0; iRom < fixZip.ChildCount; iRom++)
             {
-                RvFile zipFileFixing = new RvFile(FileType.ZipFile);
+                RvFile zipFileFixing = new RvFile(DBTypeGet.FileFromDir(fixFileType));
                 fixZip.Child(iRom).CopyTo(zipFileFixing);
 
                 if (iRom == fixZipTemp.Count)
@@ -1063,7 +1085,7 @@ namespace ROMVault2
                                 string ts = lstFixRomTable[0].Parent.FullName;
                                 string sourceDir;
                                 string sourceFile;
-                                if (lstFixRomTable[0].FileType == FileType.ZipFile)
+                                if (lstFixRomTable[0].FileType == FileType.ZipFile || lstFixRomTable[0].FileType == FileType.SevenZipFile)
                                 {
                                     sourceDir = Path.GetDirectoryName(ts);
                                     sourceFile = Path.GetFileName(ts);
@@ -1593,6 +1615,7 @@ namespace ROMVault2
             switch (fileToCheck.FileType)
             {
                 case FileType.ZipFile:
+                case FileType.SevenZipFile:
                     {
                         string fullPathCheckDelete = fileToCheck.Parent.FullName;
                         if (!File.Exists(fullPathCheckDelete))
@@ -1775,6 +1798,7 @@ namespace ROMVault2
                         _processList.Add(tCheck);
                     break;
                 case FileType.ZipFile:
+                case FileType.SevenZipFile:
 
                     RvDir p = tCheck.Parent;
                     if (fastProcess)

ROMVault2/FrmHelpAbout.Designer.cs

@@ -71,7 +71,7 @@
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
-            this.BackgroundImage = global::ROMVault2.rvImages.romvaultTZ;
+            this.BackgroundImage = global::ROMVault2.rvImages1.romvaultTZ;
             this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
             this.ClientSize = new System.Drawing.Size(471, 172);
             this.Controls.Add(this.label2);

ROMVault2/FrmMain.Designer.cs

@@ -28,19 +28,14 @@
         /// </summary>
         private void InitializeComponent()
         {
-            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(FrmMain));
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle1 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle2 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle3 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle4 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle5 = new System.Windows.Forms.DataGridViewCellStyle();
             System.Windows.Forms.DataGridViewCellStyle dataGridViewCellStyle6 = new System.Windows.Forms.DataGridViewCellStyle();
+            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(FrmMain));
             this.splitContainer1 = new System.Windows.Forms.SplitContainer();
-            this.btnReport = new System.Windows.Forms.Button();
-            this.btnFixFiles = new System.Windows.Forms.Button();
-            this.btnFindFixes = new System.Windows.Forms.Button();
-            this.btnScanRoms = new System.Windows.Forms.Button();
-            this.btnUpdateDats = new System.Windows.Forms.Button();
             this.splitContainer2 = new System.Windows.Forms.SplitContainer();
             this.splitContainer3 = new System.Windows.Forms.SplitContainer();
             this.gbDatInfo = new System.Windows.Forms.GroupBox();
@@ -109,6 +104,11 @@
             this.dataGridViewImageColumn1 = new System.Windows.Forms.DataGridViewImageColumn();
             this.dataGridViewImageColumn2 = new System.Windows.Forms.DataGridViewImageColumn();
             this.dataGridViewImageColumn3 = new System.Windows.Forms.DataGridViewImageColumn();
+            this.btnReport = new System.Windows.Forms.Button();
+            this.btnFixFiles = new System.Windows.Forms.Button();
+            this.btnFindFixes = new System.Windows.Forms.Button();
+            this.btnScanRoms = new System.Windows.Forms.Button();
+            this.btnUpdateDats = new System.Windows.Forms.Button();
             this.splitContainer1.Panel1.SuspendLayout();
             this.splitContainer1.Panel2.SuspendLayout();
             this.splitContainer1.SuspendLayout();
@@ -154,71 +154,6 @@
             this.splitContainer1.SplitterDistance = 80;
             this.splitContainer1.TabIndex = 5;
             // 
-            // btnReport
-            // 
-            this.btnReport.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btnReport.BackgroundImage")));
-            this.btnReport.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
-            this.btnReport.Location = new System.Drawing.Point(0, 320);
-            this.btnReport.Name = "btnReport";
-            this.btnReport.Size = new System.Drawing.Size(80, 80);
-            this.btnReport.TabIndex = 13;
-            this.btnReport.Text = "Generate Reports";
-            this.btnReport.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
-            this.btnReport.UseVisualStyleBackColor = true;
-            this.btnReport.Click += new System.EventHandler(this.BtnReportClick);
-            // 
-            // btnFixFiles
-            // 
-            this.btnFixFiles.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btnFixFiles.BackgroundImage")));
-            this.btnFixFiles.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
-            this.btnFixFiles.Location = new System.Drawing.Point(0, 240);
-            this.btnFixFiles.Name = "btnFixFiles";
-            this.btnFixFiles.Size = new System.Drawing.Size(80, 80);
-            this.btnFixFiles.TabIndex = 10;
-            this.btnFixFiles.Text = "Fix ROMs";
-            this.btnFixFiles.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
-            this.btnFixFiles.UseVisualStyleBackColor = true;
-            this.btnFixFiles.Click += new System.EventHandler(this.BtnFixFilesClick);
-            // 
-            // btnFindFixes
-            // 
-            this.btnFindFixes.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btnFindFixes.BackgroundImage")));
-            this.btnFindFixes.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
-            this.btnFindFixes.Location = new System.Drawing.Point(0, 160);
-            this.btnFindFixes.Name = "btnFindFixes";
-            this.btnFindFixes.Size = new System.Drawing.Size(80, 80);
-            this.btnFindFixes.TabIndex = 9;
-            this.btnFindFixes.Text = "Find Fixes";
-            this.btnFindFixes.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
-            this.btnFindFixes.UseVisualStyleBackColor = true;
-            this.btnFindFixes.Click += new System.EventHandler(this.BtnFindFixesClick);
-            // 
-            // btnScanRoms
-            // 
-            this.btnScanRoms.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btnScanRoms.BackgroundImage")));
-            this.btnScanRoms.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
-            this.btnScanRoms.Location = new System.Drawing.Point(0, 80);
-            this.btnScanRoms.Name = "btnScanRoms";
-            this.btnScanRoms.Size = new System.Drawing.Size(80, 80);
-            this.btnScanRoms.TabIndex = 8;
-            this.btnScanRoms.Text = "Scan ROMs";
-            this.btnScanRoms.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
-            this.btnScanRoms.UseVisualStyleBackColor = true;
-            this.btnScanRoms.Click += new System.EventHandler(this.BtnScanRomsClick);
-            // 
-            // btnUpdateDats
-            // 
-            this.btnUpdateDats.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("btnUpdateDats.BackgroundImage")));
-            this.btnUpdateDats.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
-            this.btnUpdateDats.Location = new System.Drawing.Point(0, 0);
-            this.btnUpdateDats.Name = "btnUpdateDats";
-            this.btnUpdateDats.Size = new System.Drawing.Size(80, 80);
-            this.btnUpdateDats.TabIndex = 0;
-            this.btnUpdateDats.Text = "Update DATs";
-            this.btnUpdateDats.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
-            this.btnUpdateDats.UseVisualStyleBackColor = true;
-            this.btnUpdateDats.Click += new System.EventHandler(this.BtnUpdateDatsClick);
-            // 
             // splitContainer2
             // 
             this.splitContainer2.Dock = System.Windows.Forms.DockStyle.Fill;
@@ -653,10 +588,10 @@
             this.GameGrid.Size = new System.Drawing.Size(697, 267);
             this.GameGrid.TabIndex = 4;
             this.GameGrid.CellFormatting += new System.Windows.Forms.DataGridViewCellFormattingEventHandler(this.GameGrid_CellFormatting);
+            this.GameGrid.ColumnHeaderMouseClick += new System.Windows.Forms.DataGridViewCellMouseEventHandler(this.GameGridColumnHeaderMouseClick);
             this.GameGrid.SelectionChanged += new System.EventHandler(this.GameGridSelectionChanged);
             this.GameGrid.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler(this.GameGridMouseDoubleClick);
             this.GameGrid.MouseUp += new System.Windows.Forms.MouseEventHandler(this.GameGrid_MouseUp);
-            this.GameGrid.ColumnHeaderMouseClick += new System.Windows.Forms.DataGridViewCellMouseEventHandler(this.GameGridColumnHeaderMouseClick);
             // 
             // Type
             // 
@@ -665,7 +600,6 @@
             this.Type.Name = "Type";
             this.Type.ReadOnly = true;
             this.Type.Resizable = System.Windows.Forms.DataGridViewTriState.True;
-            this.Type.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.NotSortable;
             this.Type.Width = 40;
             // 
             // CGame
@@ -690,7 +624,6 @@
             this.CCorrect.Name = "CCorrect";
             this.CCorrect.ReadOnly = true;
             this.CCorrect.Resizable = System.Windows.Forms.DataGridViewTriState.False;
-            this.CCorrect.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.NotSortable;
             this.CCorrect.Width = 500;
             // 
             // RomGrid
@@ -760,7 +693,6 @@
             this.CGot.Name = "CGot";
             this.CGot.ReadOnly = true;
             this.CGot.Resizable = System.Windows.Forms.DataGridViewTriState.True;
-            this.CGot.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.NotSortable;
             this.CGot.Width = 65;
             // 
             // CRom
@@ -972,6 +904,71 @@
             this.dataGridViewImageColumn3.SortMode = System.Windows.Forms.DataGridViewColumnSortMode.Automatic;
             this.dataGridViewImageColumn3.Width = 65;
             // 
+            // btnReport
+            // 
+            this.btnReport.BackgroundImage = global::ROMVault2.rvImages1.btnReport_BackgroundImage;
+            this.btnReport.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
+            this.btnReport.Location = new System.Drawing.Point(0, 320);
+            this.btnReport.Name = "btnReport";
+            this.btnReport.Size = new System.Drawing.Size(80, 80);
+            this.btnReport.TabIndex = 13;
+            this.btnReport.Text = "Generate Reports";
+            this.btnReport.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
+            this.btnReport.UseVisualStyleBackColor = true;
+            this.btnReport.Click += new System.EventHandler(this.BtnReportClick);
+            // 
+            // btnFixFiles
+            // 
+            this.btnFixFiles.BackgroundImage = global::ROMVault2.rvImages1.btnFixFiles_BackgroundImage;
+            this.btnFixFiles.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
+            this.btnFixFiles.Location = new System.Drawing.Point(0, 240);
+            this.btnFixFiles.Name = "btnFixFiles";
+            this.btnFixFiles.Size = new System.Drawing.Size(80, 80);
+            this.btnFixFiles.TabIndex = 10;
+            this.btnFixFiles.Text = "Fix ROMs";
+            this.btnFixFiles.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
+            this.btnFixFiles.UseVisualStyleBackColor = true;
+            this.btnFixFiles.Click += new System.EventHandler(this.BtnFixFilesClick);
+            // 
+            // btnFindFixes
+            // 
+            this.btnFindFixes.BackgroundImage = global::ROMVault2.rvImages1.btnFindFixes_BackgroundImage;
+            this.btnFindFixes.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
+            this.btnFindFixes.Location = new System.Drawing.Point(0, 160);
+            this.btnFindFixes.Name = "btnFindFixes";
+            this.btnFindFixes.Size = new System.Drawing.Size(80, 80);
+            this.btnFindFixes.TabIndex = 9;
+            this.btnFindFixes.Text = "Find Fixes";
+            this.btnFindFixes.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
+            this.btnFindFixes.UseVisualStyleBackColor = true;
+            this.btnFindFixes.Click += new System.EventHandler(this.BtnFindFixesClick);
+            // 
+            // btnScanRoms
+            // 
+            this.btnScanRoms.BackgroundImage = global::ROMVault2.rvImages1.btnScanRoms_BackgroundImage;
+            this.btnScanRoms.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
+            this.btnScanRoms.Location = new System.Drawing.Point(0, 80);
+            this.btnScanRoms.Name = "btnScanRoms";
+            this.btnScanRoms.Size = new System.Drawing.Size(80, 80);
+            this.btnScanRoms.TabIndex = 8;
+            this.btnScanRoms.Text = "Scan ROMs";
+            this.btnScanRoms.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
+            this.btnScanRoms.UseVisualStyleBackColor = true;
+            this.btnScanRoms.Click += new System.EventHandler(this.BtnScanRomsClick);
+            // 
+            // btnUpdateDats
+            // 
+            this.btnUpdateDats.BackgroundImage = global::ROMVault2.rvImages1.btnUpdateDats_BackgroundImage;
+            this.btnUpdateDats.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
+            this.btnUpdateDats.Location = new System.Drawing.Point(0, 0);
+            this.btnUpdateDats.Name = "btnUpdateDats";
+            this.btnUpdateDats.Size = new System.Drawing.Size(80, 80);
+            this.btnUpdateDats.TabIndex = 0;
+            this.btnUpdateDats.Text = "Update DATs";
+            this.btnUpdateDats.TextAlign = System.Drawing.ContentAlignment.BottomCenter;
+            this.btnUpdateDats.UseVisualStyleBackColor = true;
+            this.btnUpdateDats.Click += new System.EventHandler(this.BtnUpdateDatsClick);
+            // 
             // FrmMain
             // 
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;

ROMVault2/FrmMain.cs

@@ -774,6 +774,12 @@ namespace ROMVault2
                         else
                             bitmapName = "Zip" + tRvDir.RepStatus;
                         break;
+                    case FileType.SevenZip:
+                        if (tRvDir.RepStatus == RepStatus.DirCorrect && tRvDir.ZipStatus == ZipStatus.TrrntZip)
+                            bitmapName = "SevenZipTZ";
+                        else
+                            bitmapName = "SevenZip" + tRvDir.RepStatus;
+                        break;
                     default:
                         // hack because DirDirInToSort image doesnt exist.
                         if (tRvDir.RepStatus ==  RepStatus.DirInToSort)

ROMVault2/FrmMain.resx

@@ -117,411 +117,6 @@
   <resheader name="writer">
     <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </resheader>
-  <assembly alias="System.Drawing" name="System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
-  <data name="btnReport.BackgroundImage" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
-    <value>
-        iVBORw0KGgoAAAANSUhEUgAAAFAAAABQCAIAAAABc2X6AAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAAO
-        vAAADrwBlbxySQAAABl0RVh0U29mdHdhcmUAUGFpbnQuTkVUIHYzLjUuND6NzHYAAAb3SURBVHhe7Zr5
-        VxNXFMf7/7U9tVDK4oLV47HosQjUVj3SY+sKCIJlUxFwQUTFlSUsgbBoFW0gbAmBhIQw2beZJFjggP1O
-        XuTESGBihjCdzvfcn8ibmfd53/vevZPwxfv/mSRgsUsCFrskYLFLAha74gVeXV1dXl5eWFhgGIbmLAzG
-        JbgQl4dulCjFC4xJl3Q6SnvcZb3eP/voaHFF4cUADCvpcl6S2QpbzUrlMEVR7969SzBzvMCBQKC4y+Xz
-        +QMBeIb5RxU+9fsDDON3u+nCdlv+I6qlpdVgMOCjRDLHC4zkLOpkgRteeQrlTFGP79PA39nopgu66QqF
-        h6Z9hTJnn8qR3zz/9OnzBDPHC4wNeVHmBDDx958NFfR5AT4XdLoHJ9wKlT3xzDwAn21zMYyv4bUXZl7q
-        9UcL4nZlP+33+893ev/S0NvCzAPw6RYngLGZN9nEQXshjDwjo19P+7aFmQfgU8+cKDSbOkyiaoAB8GkZ
-        /UbnD2fObZxLDDMPwMefOLxe2od9jN3JQRiW38a81QcimBPjMw/APz9igTk6XD3IJn/eg/m+UatCZekd
-        sfQoqa63JtlrY+ug7thtdWNjk0YzheVbWVkJPYNX8QCc89Du8XhRn4jJ4ap8EYgWFYN+RPmAr7yfQWdS
-        1uNhe5J2a0ELtaU+8wB8pMnucrnrXkY6XKLwlw8GlqJrMShSrnDkhXqSNuuW5jYPwAfvssBepHWwSQ5X
-        WX8ASI1vmPCFCA9Sq0hbstaTbOl+5gF4/x2b0+la12EEsXEDJbgn4QF4zy0W2IN9HDQ5XAVyP6a7gcMk
-        iM+J6Ul4AE6vtzkcznUdPtflw1y5KKIneanxEuZTD038MvMAnFbLArvdbmJyuH7v8AFjU4dJfNSTaBkw
-        D4y7ekfsOQ3GILORF2YegFNuRHU4v51l4C6kNOlJhmZCzP1jTrnSerLJwBczD8DJNTa73eHCSR00OVwn
-        Wllgjg6TnuRkK/P37AJhfjVFv5j0ILE7h6jjd/W8MPMAnFRjs9ns6zr8y3P2HIpJJ1p9uU/o3MfenEee
-        7GbXkfv2w42WH2/NHbih+6Fa09LSRlHm5eXl0ONjF2/ATpzUQZPDlfOErcz3/+bkcHhg7VCcC7rpix2e
-        s632G/J5jWZ2b9XUhQtFSuUIEiH0+NjFD7DValvX4cPNka0IR+G2OPOwRRwOl9lsMxioqanZ3ZXao0eP
-        KRT9GBB6fOziZw8D2IGDK2hyuA4+YCvz5znMmgyHOz3n2py1PSxwevnUoUPZcnkv7kme/hniARindDSH
-        992LbEU4ilQ1bAos45rDKVemsrJ+2n7g1NqoDu++y86bB4d7zRqN/tsyYQCn1UU9pXfdCToVu0hVw5Kh
-        4FGU1WDAoaXfcVkYwBl1HzlMzmei9Nvs7Ply+OsSYQDvrA/u4ReR30vD4dRbIa9iFVkvrCByZ37eMjtr
-        Uqt1XxULBLjOajZbMTOkH/GZWA2l3GSnzovDk5MzXwoFuNZsMpmv9znRJBR0edEtIDDXSz0MgCOSnKPI
-        emH5kDu4uV4/JyDgjOsmg8E0N0dhZhRlgduYJXE7pZ5NS14cnpgQDHD6VYNWO1vRQZ15bj3bYj/X5jjf
-        zrpd1O1NqWddWstw7gpuCyc2icVixVLqdEYAC2UPp1bMjI1pkXI4SKenDUg/VBGcNBaLLTUI3PSWjjBw
-        01jXYUGc0mhrU0rVaVc0GRXaXVW6zGuz+2qNB25SBxus+2v16fWsS8SukHfcRC6JcPgbIdRhvLioVKNV
-        Vdfz8n7FbLKyjgTjMCIzc296vQOb+d6byJ5k0/jUYWTQjlIBAOPVFEkL5r6+AUzlQ/Qgmpru76y3r705
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   <metadata name="Type.UserAddedColumn" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>
@@ -567,6 +162,7 @@
   <metadata name="menuStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>17, 17</value>
   </metadata>
+  <assembly alias="System.Drawing" name="System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
   <data name="$this.Icon" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
     <value>
         AAABAAUAEBAAAAAAIABoBAAAVgAAACAgAAAAACAAqBAAAL4EAAAwMAAAAAAgAKglAABmFQAAQEAAAAAA

ROMVault2/FrmSplashScreen.Designer.cs

@@ -29,7 +29,6 @@
         private void InitializeComponent()
         {
             this.components = new System.ComponentModel.Container();
-            System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(FrmSplashScreen));
             this.lblStatus = new System.Windows.Forms.Label();
             this.timer1 = new System.Windows.Forms.Timer(this.components);
             this.progressBar = new System.Windows.Forms.ProgressBar();
@@ -76,7 +75,7 @@
             // FrmSplashScreen
             // 
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
-            this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));
+            this.BackgroundImage = global::ROMVault2.rvImages1.romvaultTZ;
             this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.None;
             this.ClientSize = new System.Drawing.Size(465, 207);
             this.ControlBox = false;

ROMVault2/FrmSplashScreen.resx

@@ -123,447 +123,4 @@
   <metadata name="bgWork.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>104, 17</value>
   </metadata>
-  <assembly alias="System.Drawing" name="System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
-  <data name="$this.BackgroundImage" type="System.Drawing.Bitmap, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
-    <value>
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-        3kfLh2dZbSRKnBZlc2UVnjrrqPAUNpWZik0Fp0LQkBk10DNjGoWpNkZ3TI8wTcUUxqEG8SA+xIspIuJJ
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-        aFBnMzDoGOvU1RHns8OKwl29ev8Xjm0o4imHmBUAAAAASUVORK5CYII=
-</value>
-  </data>
 </root>

ROMVault2/ROMVault2.csproj

@@ -70,7 +70,7 @@
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
     <OutputPath>..\..\Stage\</OutputPath>
-    <DefineConstants>TRACE;UNMANAGED;COMPRESS;LZMA_STREAM;DOTNET20</DefineConstants>
+    <DefineConstants>TRACE;UNMANAGED;COMPRESS;LZMA_STREAM;DOTNET20;sevenzip</DefineConstants>
     <Optimize>true</Optimize>
     <DebugType>pdbonly</DebugType>
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -82,6 +82,7 @@
     <CodeAnalysisRuleSetDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\\Rule Sets</CodeAnalysisRuleSetDirectories>
     <CodeAnalysisRuleDirectories>;C:\Program Files (x86)\Microsoft Visual Studio 10.0\Team Tools\Static Analysis Tools\FxCop\\Rules</CodeAnalysisRuleDirectories>
     <Prefer32Bit>false</Prefer32Bit>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup>
     <ApplicationIcon>chip.ico</ApplicationIcon>
@@ -118,6 +119,36 @@
     <Compile Include="rvTreeRow.cs" />
     <Compile Include="rvImages.cs" />
     <Compile Include="SupportedFiles\Files\UnCompFiles.cs" />
+    <Compile Include="SupportedFiles\ICompress.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Common\CRC.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Common\ICoder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZMA\LzmaBase.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZMA\LzmaDecoder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZMA\LzmaEncoder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZ\IMatchFinder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZ\LzBinTree.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZ\LzInWindow.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\LZ\LzOutWindow.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\RangeCoder\RangeCoder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\RangeCoder\RangeCoderBit.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Compress\RangeCoder\RangeCoderBitTree.cs" />
+    <Compile Include="SupportedFiles\SevenZip\DirUtil.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Filters\BCJ2Filter.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Filters\BCJFilter.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Filters\Filter.cs" />
+    <Compile Include="SupportedFiles\SevenZip\LZMACompressFile.cs" />
+    <Compile Include="SupportedFiles\SevenZip\SevenZip.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\BindPair.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\Coder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\FileInfo.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\Folder.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\Header.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\PackedStreamInfo.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\SignatureHeader.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\StreamsInfo.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Structure\UnpackedStreamInfo.cs" />
+    <Compile Include="SupportedFiles\SevenZip\TesterStream.cs" />
+    <Compile Include="SupportedFiles\SevenZip\Util.cs" />
     <Compile Include="SupportedFiles\ZipEnums.cs" />
     <Compile Include="Utils\ArrByte.cs" />
     <Compile Include="BackGroundWorkerInterface.cs" />

ROMVault2/RepairStatus.cs

@@ -92,6 +92,19 @@ namespace ROMVault2
             StatusCheck[(int)FileType.Zip, (int)DatStatus.NotInDat, (int)GotStatus.FileLocked] = new List<RepStatus> { RepStatus.UnScanned };
             StatusCheck[(int)FileType.Zip, (int)DatStatus.NotInDat, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Deleted };
 
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InDatCollect, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.DirCorrect };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InDatCollect, (int)GotStatus.Corrupt] = new List<RepStatus> { RepStatus.DirCorrupt };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InDatCollect, (int)GotStatus.FileLocked] = new List<RepStatus> { RepStatus.UnScanned };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InDatCollect, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.DirMissing };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InToSort, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.DirInToSort };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InToSort, (int)GotStatus.Corrupt] = new List<RepStatus> { RepStatus.DirCorrupt };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InToSort, (int)GotStatus.FileLocked] = new List<RepStatus> { RepStatus.UnScanned };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.InToSort, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Deleted };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.NotInDat, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.DirUnknown };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.NotInDat, (int)GotStatus.Corrupt] = new List<RepStatus> { RepStatus.DirCorrupt };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.NotInDat, (int)GotStatus.FileLocked] = new List<RepStatus> { RepStatus.UnScanned };
+            StatusCheck[(int)FileType.SevenZip, (int)DatStatus.NotInDat, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Deleted };
+
 
             StatusCheck[(int)FileType.File, (int)DatStatus.InDatBad, (int)GotStatus.FileLocked] = new List<RepStatus> { RepStatus.UnScanned };
             StatusCheck[(int)FileType.File, (int)DatStatus.InDatBad, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.NotCollected };
@@ -128,6 +141,22 @@ namespace ROMVault2
             StatusCheck[(int)FileType.ZipFile, (int)DatStatus.NotInDat, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.Unknown, RepStatus.Delete, RepStatus.MoveToSort, RepStatus.NeededForFix, RepStatus.Rename };
             StatusCheck[(int)FileType.ZipFile, (int)DatStatus.NotInDat, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Deleted };
 
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatBad, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.NotCollected };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatBad, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.Correct };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatCollect, (int)GotStatus.Corrupt] = new List<RepStatus> { RepStatus.Corrupt, RepStatus.MoveToCorrupt, RepStatus.CorruptCanBeFixed };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatCollect, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.Correct };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatCollect, (int)GotStatus.FileLocked] = new List<RepStatus> { RepStatus.UnScanned };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatCollect, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Missing, RepStatus.CanBeFixed };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatMerged, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.UnNeeded, RepStatus.Delete, RepStatus.NeededForFix, RepStatus.Rename };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InDatMerged, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.NotCollected };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InToSort, (int)GotStatus.Corrupt] = new List<RepStatus> { RepStatus.Corrupt, RepStatus.Delete };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InToSort, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.InToSort, RepStatus.NeededForFix, RepStatus.Delete };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.InToSort, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Deleted };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.NotInDat, (int)GotStatus.Corrupt] = new List<RepStatus> { RepStatus.Corrupt, RepStatus.MoveToCorrupt, RepStatus.Delete };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.NotInDat, (int)GotStatus.Got] = new List<RepStatus> { RepStatus.Unknown, RepStatus.Delete, RepStatus.MoveToSort, RepStatus.NeededForFix, RepStatus.Rename };
+            StatusCheck[(int)FileType.SevenZipFile, (int)DatStatus.NotInDat, (int)GotStatus.NotGot] = new List<RepStatus> { RepStatus.Deleted };
+          
+
             DisplayOrder = new[]
             {
                 RepStatus.Error,
@@ -169,7 +198,7 @@ namespace ROMVault2
             tBase.RepStatusReset();
 
             FileType ftBase = tBase.FileType;
-            if (ftBase != FileType.Zip && ftBase != FileType.Dir) return;
+            if (ftBase != FileType.Zip && ftBase != FileType.SevenZip && ftBase != FileType.Dir) return;
 
             RvDir tDir = (RvDir)tBase;
 

ROMVault2/RvDB/RvBase.cs

@@ -13,7 +13,7 @@ namespace ROMVault2.RvDB
 {
     public enum DatStatus { InDatCollect, InDatMerged, InDatBad, NotInDat, InToSort }
     public enum GotStatus { NotGot, Got, Corrupt, FileLocked }
-    public enum FileType { Unknown, Dir, Zip, xSevenZip, xRAR, File, ZipFile, xSevenZipFile }
+    public enum FileType { Unknown, Dir, Zip, SevenZip, xRAR, File, ZipFile, SevenZipFile }
 
     public abstract class RvBase
     {
@@ -184,7 +184,7 @@ namespace ROMVault2.RvDB
                 switch (FileType)
                 {
                     case FileType.Zip: return ".zip";
-                    //case FileType.SevenZip: return ".7z";
+                    case FileType.SevenZip: return ".7z";
                     //case FileType.RAR: return ".rar";
                 }
                 return "";

ROMVault2/RvDB/RvDir.cs

@@ -26,7 +26,7 @@ namespace ROMVault2.RvDB
         public RvDir(FileType type)
             : base(type)
         {
-            if (type != FileType.Dir && type != FileType.Zip)
+            if (type != FileType.Dir && type != FileType.Zip && type !=FileType.SevenZip)
                 ReportError.SendAndShow("Trying to set Dir type to " + type);
         }
 

ROMVault2/RvDB/RvFile.cs

@@ -32,7 +32,7 @@ namespace ROMVault2.RvDB
         public RvFile(FileType type)
             : base(type)
         {
-            if (type != FileType.File && type != FileType.ZipFile)
+            if (type != FileType.File && type != FileType.ZipFile && type != FileType.SevenZipFile)
                 ReportError.SendAndShow("Trying to set file type to " + type);
         }
 

ROMVault2/SupportedFiles/DirUtil.cs

@@ -0,0 +1,31 @@
+using System;
+using TrrntSevenZip.IO;
+
+namespace TrrntSevenZip.SupportedFiles
+{
+    public static class DirUtil
+    {
+        public static void CreateDirForFile(string sFilename)
+        {
+            string strTemp = Path.GetDirectoryName(sFilename);
+
+            if (String.IsNullOrEmpty(strTemp)) return;
+
+            if (Directory.Exists(strTemp)) return;
+
+
+            while (strTemp.Length > 0 && !Directory.Exists(strTemp))
+            {
+                int pos = strTemp.LastIndexOf(Path.DirectorySeparatorChar);
+                if (pos < 0) pos = 0;
+                strTemp = strTemp.Substring(0, pos);
+            }
+
+            while (sFilename.IndexOf(Path.DirectorySeparatorChar, strTemp.Length + 1) > 0)
+            {
+                strTemp = sFilename.Substring(0, sFilename.IndexOf(Path.DirectorySeparatorChar, strTemp.Length + 1));
+                Directory.CreateDirectory(strTemp);
+            }
+        }
+    }
+}

ROMVault2/SupportedFiles/ICompress.cs

@@ -0,0 +1,40 @@
+using System.IO;
+
+namespace ROMVault2.SupportedFiles
+{
+    public interface ICompress
+    {
+        int LocalFilesCount();
+
+        string Filename(int i);
+        ulong? LocalHeader(int i);
+        ulong UncompressedSize(int i);
+        byte[] CRC32(int i);
+        ZipReturn FileStatus(int i);
+        byte[] MD5(int i);
+        byte[] SHA1(int i);
+
+
+        ZipOpenType ZipOpen { get; }
+
+        ZipReturn ZipFileOpen(string newFilename, long timestamp, bool readHeaders);
+        void ZipFileClose();
+        ZipReturn ZipFileOpenWriteStream(bool raw, bool trrntzip, string filename, ulong uncompressedSize, ushort compressionMethod, out Stream stream);
+        ZipReturn ZipFileCloseReadStream();
+        void DeepScan();
+
+
+        ZipStatus ZipStatus { get; }
+
+        string ZipFilename { get; }
+        long TimeStamp { get; }
+
+        void ZipFileAddDirectory();
+
+        ZipReturn ZipFileCreate(string newFilename);
+        ZipReturn ZipFileCloseWriteStream(byte[] crc32);
+        ZipReturn ZipFileRollBack();
+        void ZipFileCloseFailed();
+
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Common/CRC.cs

@@ -0,0 +1,55 @@
+// Common/CRC.cs
+
+namespace ROMVault2.SupportedFiles.SevenZip.Common
+{
+	public class CRC
+	{
+		public static readonly uint[] Table;
+
+		static CRC()
+		{
+			Table = new uint[256];
+			const uint kPoly = 0xEDB88320;
+			for (uint i = 0; i < 256; i++)
+			{
+				uint r = i;
+				for (int j = 0; j < 8; j++)
+					if ((r & 1) != 0)
+						r = (r >> 1) ^ kPoly;
+					else
+						r >>= 1;
+				Table[i] = r;
+			}
+		}
+
+		uint _value = 0xFFFFFFFF;
+
+		public void Init() { _value = 0xFFFFFFFF; }
+
+		public void UpdateByte(byte b)
+		{
+			_value = Table[(((byte)(_value)) ^ b)] ^ (_value >> 8);
+		}
+
+		public void Update(byte[] data, uint offset, uint size)
+		{
+			for (uint i = 0; i < size; i++)
+				_value = Table[(((byte)(_value)) ^ data[offset + i])] ^ (_value >> 8);
+		}
+
+		public uint GetDigest() { return _value ^ 0xFFFFFFFF; }
+
+		public static uint CalculateDigest(byte[] data, uint offset, uint size)
+		{
+			CRC crc = new CRC();
+			// crc.Init();
+			crc.Update(data, offset, size);
+			return crc.GetDigest();
+		}
+
+		public static bool VerifyDigest(uint digest, byte[] data, uint offset, uint size)
+		{
+			return (CalculateDigest(data, offset, size) == digest);
+		}
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Common/ICoder.cs

@@ -0,0 +1,157 @@
+// ICoder.h
+
+using System;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Common
+{
+	/// <summary>
+	/// The exception that is thrown when an error in input stream occurs during decoding.
+	/// </summary>
+	class DataErrorException : ApplicationException
+	{
+		public DataErrorException(): base("Data Error") { }
+	}
+
+	/// <summary>
+	/// The exception that is thrown when the value of an argument is outside the allowable range.
+	/// </summary>
+	class InvalidParamException : ApplicationException
+	{
+		public InvalidParamException(): base("Invalid Parameter") { }
+	}
+
+	public interface ICodeProgress
+	{
+		/// <summary>
+		/// Callback progress.
+		/// </summary>
+		/// <param name="inSize">
+		/// input size. -1 if unknown.
+		/// </param>
+		/// <param name="outSize">
+		/// output size. -1 if unknown.
+		/// </param>
+		void SetProgress(Int64 inSize, Int64 outSize);
+	};
+
+	public interface ICoder
+	{
+		/// <summary>
+		/// Codes streams.
+		/// </summary>
+		/// <param name="inStream">
+		/// input Stream.
+		/// </param>
+		/// <param name="outStream">
+		/// output Stream.
+		/// </param>
+		/// <param name="inSize">
+		/// input Size. -1 if unknown.
+		/// </param>
+		/// <param name="outSize">
+		/// output Size. -1 if unknown.
+		/// </param>
+		/// <param name="progress">
+		/// callback progress reference.
+		/// </param>
+		/// <exception cref="DataErrorException">
+		/// if input stream is not valid
+		/// </exception>
+		void Code(System.IO.Stream inStream, System.IO.Stream outStream,
+			Int64 inSize, Int64 outSize, ICodeProgress progress);
+	};
+
+	/*
+	public interface ICoder2
+	{
+		 void Code(ISequentialInStream []inStreams,
+				const UInt64 []inSizes, 
+				ISequentialOutStream []outStreams, 
+				UInt64 []outSizes,
+				ICodeProgress progress);
+	};
+  */
+
+	/// <summary>
+	/// Provides the fields that represent properties idenitifiers for compressing.
+	/// </summary>
+	public enum CoderPropID
+	{
+		/// <summary>
+		/// Specifies default property.
+		/// </summary>
+		DefaultProp = 0,
+		/// <summary>
+		/// Specifies size of dictionary.
+		/// </summary>
+		DictionarySize,
+		/// <summary>
+		/// Specifies size of memory for PPM*.
+		/// </summary>
+		UsedMemorySize,
+		/// <summary>
+		/// Specifies order for PPM methods.
+		/// </summary>
+		Order,
+		/// <summary>
+		/// Specifies Block Size.
+		/// </summary>
+		BlockSize,
+		/// <summary>
+		/// Specifies number of postion state bits for LZMA (0 <= x <= 4).
+		/// </summary>
+		PosStateBits,
+		/// <summary>
+		/// Specifies number of literal context bits for LZMA (0 <= x <= 8).
+		/// </summary>
+		LitContextBits,
+		/// <summary>
+		/// Specifies number of literal position bits for LZMA (0 <= x <= 4).
+		/// </summary>
+		LitPosBits,
+		/// <summary>
+		/// Specifies number of fast bytes for LZ*.
+		/// </summary>
+		NumFastBytes,
+		/// <summary>
+		/// Specifies match finder. LZMA: "BT2", "BT4" or "BT4B".
+		/// </summary>
+		MatchFinder,
+		/// <summary>
+		/// Specifies the number of match finder cyckes.
+		/// </summary>
+		MatchFinderCycles,
+		/// <summary>
+		/// Specifies number of passes.
+		/// </summary>
+		NumPasses,
+		/// <summary>
+		/// Specifies number of algorithm.
+		/// </summary>
+		Algorithm,
+		/// <summary>
+		/// Specifies the number of threads.
+		/// </summary>
+		NumThreads,
+		/// <summary>
+		/// Specifies mode with end marker.
+		/// </summary>
+		EndMarker
+	};
+
+
+	public interface ISetCoderProperties
+	{
+		void SetCoderProperties(CoderPropID[] propIDs, object[] properties);
+	};
+
+	public interface IWriteCoderProperties
+	{
+		void WriteCoderProperties(System.IO.Stream outStream);
+	}
+
+	public interface ISetDecoderProperties
+	{
+		void SetDecoderProperties(byte[] properties);
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/LZ/IMatchFinder.cs

@@ -0,0 +1,24 @@
+// IMatchFinder.cs
+
+using System;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.LZ
+{
+	interface IInWindowStream
+	{
+		void SetStream(System.IO.Stream inStream);
+		void Init();
+		void ReleaseStream();
+		Byte GetIndexByte(Int32 index);
+		UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit);
+		UInt32 GetNumAvailableBytes();
+	}
+
+	interface IMatchFinder : IInWindowStream
+	{
+		void Create(UInt32 historySize, UInt32 keepAddBufferBefore,
+				UInt32 matchMaxLen, UInt32 keepAddBufferAfter);
+		UInt32 GetMatches(UInt32[] distances);
+		void Skip(UInt32 num);
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/LZ/LzBinTree.cs

@@ -0,0 +1,368 @@
+// LzBinTree.cs
+
+using System;
+using ROMVault2.SupportedFiles.SevenZip.Common;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.LZ
+{
+	public class BinTree : InWindow, IMatchFinder
+	{
+		UInt32 _cyclicBufferPos;
+		UInt32 _cyclicBufferSize = 0;
+		UInt32 _matchMaxLen;
+
+		UInt32[] _son;
+		UInt32[] _hash;
+
+		UInt32 _cutValue = 0xFF;
+		UInt32 _hashMask;
+		UInt32 _hashSizeSum = 0;
+
+		bool HASH_ARRAY = true;
+
+		const UInt32 kHash2Size = 1 << 10;
+		const UInt32 kHash3Size = 1 << 16;
+		const UInt32 kBT2HashSize = 1 << 16;
+		const UInt32 kStartMaxLen = 1;
+		const UInt32 kHash3Offset = kHash2Size;
+		const UInt32 kEmptyHashValue = 0;
+		const UInt32 kMaxValForNormalize = ((UInt32)1 << 31) - 1;
+	
+		UInt32 kNumHashDirectBytes = 0;
+		UInt32 kMinMatchCheck = 4;
+		UInt32 kFixHashSize = kHash2Size + kHash3Size;
+		
+		public void SetType(int numHashBytes)
+		{
+			HASH_ARRAY = (numHashBytes > 2);
+			if (HASH_ARRAY)
+			{
+				kNumHashDirectBytes = 0;
+				kMinMatchCheck = 4;
+				kFixHashSize = kHash2Size + kHash3Size;
+			}
+			else
+			{
+				kNumHashDirectBytes = 2;
+				kMinMatchCheck = 2 + 1;
+				kFixHashSize = 0;
+			}
+		}
+
+		public new void SetStream(System.IO.Stream stream) { base.SetStream(stream); }
+		public new void ReleaseStream() { base.ReleaseStream(); }
+		
+		public new void Init()
+		{
+			base.Init();
+			for (UInt32 i = 0; i < _hashSizeSum; i++)
+				_hash[i] = kEmptyHashValue;
+			_cyclicBufferPos = 0;
+			ReduceOffsets(-1);
+		}
+
+		public new void MovePos()
+		{
+			if (++_cyclicBufferPos >= _cyclicBufferSize)
+				_cyclicBufferPos = 0;
+			base.MovePos();
+			if (_pos == kMaxValForNormalize)
+				Normalize();
+		}
+
+		public new Byte GetIndexByte(Int32 index) { return base.GetIndexByte(index); }
+
+		public new UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit)
+		{ return base.GetMatchLen(index, distance, limit); }
+
+		public new UInt32 GetNumAvailableBytes() { return base.GetNumAvailableBytes(); }
+
+		public void Create(UInt32 historySize, UInt32 keepAddBufferBefore,
+				UInt32 matchMaxLen, UInt32 keepAddBufferAfter)
+		{
+			if (historySize > kMaxValForNormalize - 256)
+				throw new Exception();
+			_cutValue = 16 + (matchMaxLen >> 1);
+				
+			UInt32 windowReservSize = (historySize + keepAddBufferBefore +
+					matchMaxLen + keepAddBufferAfter) / 2 + 256;
+
+			base.Create(historySize + keepAddBufferBefore, matchMaxLen + keepAddBufferAfter, windowReservSize);
+
+			_matchMaxLen = matchMaxLen;
+
+			UInt32 cyclicBufferSize = historySize + 1;
+			if (_cyclicBufferSize != cyclicBufferSize)
+				_son = new UInt32[(_cyclicBufferSize = cyclicBufferSize) * 2];
+
+			UInt32 hs = kBT2HashSize;
+
+			if (HASH_ARRAY)
+			{
+				hs = historySize - 1;
+				hs |= (hs >> 1);
+				hs |= (hs >> 2);
+				hs |= (hs >> 4);
+				hs |= (hs >> 8);
+				hs >>= 1;
+				hs |= 0xFFFF;
+				if (hs > (1 << 24))
+					hs >>= 1;
+				_hashMask = hs;
+				hs++;
+				hs += kFixHashSize;
+			}
+			if (hs != _hashSizeSum)
+				_hash = new UInt32[_hashSizeSum = hs];
+		}
+
+		public UInt32 GetMatches(UInt32[] distances)
+		{
+			UInt32 lenLimit;
+			if (_pos + _matchMaxLen <= _streamPos)
+				lenLimit = _matchMaxLen;
+			else
+			{
+				lenLimit = _streamPos - _pos;
+				if (lenLimit < kMinMatchCheck)
+				{
+					MovePos();
+					return 0;
+				}
+			}
+
+			UInt32 offset = 0;
+			UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
+			UInt32 cur = _bufferOffset + _pos;
+			UInt32 maxLen = kStartMaxLen; // to avoid items for len < hashSize;
+			UInt32 hashValue, hash2Value = 0, hash3Value = 0;
+
+			if (HASH_ARRAY)
+			{
+				UInt32 temp = CRC.Table[_bufferBase[cur]] ^ _bufferBase[cur + 1];
+				hash2Value = temp & (kHash2Size - 1);
+				temp ^= ((UInt32)(_bufferBase[cur + 2]) << 8);
+				hash3Value = temp & (kHash3Size - 1);
+				hashValue = (temp ^ (CRC.Table[_bufferBase[cur + 3]] << 5)) & _hashMask;
+			}
+			else
+				hashValue = _bufferBase[cur] ^ ((UInt32)(_bufferBase[cur + 1]) << 8);
+
+			UInt32 curMatch = _hash[kFixHashSize + hashValue];
+			if (HASH_ARRAY)
+			{
+				UInt32 curMatch2 = _hash[hash2Value];
+				UInt32 curMatch3 = _hash[kHash3Offset + hash3Value];
+				_hash[hash2Value] = _pos;
+				_hash[kHash3Offset + hash3Value] = _pos;
+				if (curMatch2 > matchMinPos)
+					if (_bufferBase[_bufferOffset + curMatch2] == _bufferBase[cur])
+					{
+						distances[offset++] = maxLen = 2;
+						distances[offset++] = _pos - curMatch2 - 1;
+					}
+				if (curMatch3 > matchMinPos)
+					if (_bufferBase[_bufferOffset + curMatch3] == _bufferBase[cur])
+					{
+						if (curMatch3 == curMatch2)
+							offset -= 2;
+						distances[offset++] = maxLen = 3;
+						distances[offset++] = _pos - curMatch3 - 1;
+						curMatch2 = curMatch3;
+					}
+				if (offset != 0 && curMatch2 == curMatch)
+				{
+					offset -= 2;
+					maxLen = kStartMaxLen;
+				}
+			}
+
+			_hash[kFixHashSize + hashValue] = _pos;
+
+			UInt32 ptr0 = (_cyclicBufferPos << 1) + 1;
+			UInt32 ptr1 = (_cyclicBufferPos << 1);
+
+			UInt32 len0, len1;
+			len0 = len1 = kNumHashDirectBytes;
+			
+			if (kNumHashDirectBytes != 0)
+			{
+				if (curMatch > matchMinPos)
+				{
+					if (_bufferBase[_bufferOffset + curMatch + kNumHashDirectBytes] !=
+							_bufferBase[cur + kNumHashDirectBytes])
+					{
+						distances[offset++] = maxLen = kNumHashDirectBytes;
+						distances[offset++] = _pos - curMatch - 1;
+					}
+				}
+			}
+			
+			UInt32 count = _cutValue;
+			
+			while(true)
+			{
+				if(curMatch <= matchMinPos || count-- == 0)
+				{
+					_son[ptr0] = _son[ptr1] = kEmptyHashValue;
+					break;
+				}
+				UInt32 delta = _pos - curMatch;
+				UInt32 cyclicPos = ((delta <= _cyclicBufferPos) ?
+							(_cyclicBufferPos - delta) :
+							(_cyclicBufferPos - delta + _cyclicBufferSize)) << 1;
+
+				UInt32 pby1 = _bufferOffset + curMatch;
+				UInt32 len = Math.Min(len0, len1);
+				if (_bufferBase[pby1 + len] == _bufferBase[cur + len])
+				{
+					while(++len != lenLimit)
+						if (_bufferBase[pby1 + len] != _bufferBase[cur + len])
+							break;
+					if (maxLen < len)
+					{
+						distances[offset++] = maxLen = len;
+						distances[offset++] = delta - 1;
+						if (len == lenLimit)
+						{
+							_son[ptr1] = _son[cyclicPos];
+							_son[ptr0] = _son[cyclicPos + 1];
+							break;
+						}
+					}
+				}
+				if (_bufferBase[pby1 + len] < _bufferBase[cur + len])
+				{
+					_son[ptr1] = curMatch;
+					ptr1 = cyclicPos + 1;
+					curMatch = _son[ptr1];
+					len1 = len;
+				}
+				else
+				{
+					_son[ptr0] = curMatch;
+					ptr0 = cyclicPos;
+					curMatch = _son[ptr0];
+					len0 = len;
+				}
+			}
+			MovePos();
+			return offset;
+		}
+
+		public void Skip(UInt32 num)
+		{
+			do
+			{
+				UInt32 lenLimit;
+				if (_pos + _matchMaxLen <= _streamPos)
+					lenLimit = _matchMaxLen;
+				else
+				{
+					lenLimit = _streamPos - _pos;
+					if (lenLimit < kMinMatchCheck)
+					{
+						MovePos();
+						continue;
+					}
+				}
+
+				UInt32 matchMinPos = (_pos > _cyclicBufferSize) ? (_pos - _cyclicBufferSize) : 0;
+				UInt32 cur = _bufferOffset + _pos;
+
+				UInt32 hashValue;
+
+				if (HASH_ARRAY)
+				{
+					UInt32 temp = CRC.Table[_bufferBase[cur]] ^ _bufferBase[cur + 1];
+					UInt32 hash2Value = temp & (kHash2Size - 1);
+					_hash[hash2Value] = _pos;
+					temp ^= ((UInt32)(_bufferBase[cur + 2]) << 8);
+					UInt32 hash3Value = temp & (kHash3Size - 1);
+					_hash[kHash3Offset + hash3Value] = _pos;
+					hashValue = (temp ^ (CRC.Table[_bufferBase[cur + 3]] << 5)) & _hashMask;
+				}
+				else
+					hashValue = _bufferBase[cur] ^ ((UInt32)(_bufferBase[cur + 1]) << 8);
+
+				UInt32 curMatch = _hash[kFixHashSize + hashValue];
+				_hash[kFixHashSize + hashValue] = _pos;
+
+				UInt32 ptr0 = (_cyclicBufferPos << 1) + 1;
+				UInt32 ptr1 = (_cyclicBufferPos << 1);
+
+				UInt32 len0, len1;
+				len0 = len1 = kNumHashDirectBytes;
+
+				UInt32 count = _cutValue;
+				while (true)
+				{
+					if (curMatch <= matchMinPos || count-- == 0)
+					{
+						_son[ptr0] = _son[ptr1] = kEmptyHashValue;
+						break;
+					}
+
+					UInt32 delta = _pos - curMatch;
+					UInt32 cyclicPos = ((delta <= _cyclicBufferPos) ?
+								(_cyclicBufferPos - delta) :
+								(_cyclicBufferPos - delta + _cyclicBufferSize)) << 1;
+
+					UInt32 pby1 = _bufferOffset + curMatch;
+					UInt32 len = Math.Min(len0, len1);
+					if (_bufferBase[pby1 + len] == _bufferBase[cur + len])
+					{
+						while (++len != lenLimit)
+							if (_bufferBase[pby1 + len] != _bufferBase[cur + len])
+								break;
+						if (len == lenLimit)
+						{
+							_son[ptr1] = _son[cyclicPos];
+							_son[ptr0] = _son[cyclicPos + 1];
+							break;
+						}
+					}
+					if (_bufferBase[pby1 + len] < _bufferBase[cur + len])
+					{
+						_son[ptr1] = curMatch;
+						ptr1 = cyclicPos + 1;
+						curMatch = _son[ptr1];
+						len1 = len;
+					}
+					else
+					{
+						_son[ptr0] = curMatch;
+						ptr0 = cyclicPos;
+						curMatch = _son[ptr0];
+						len0 = len;
+					}
+				}
+				MovePos();
+			}
+			while (--num != 0);
+		}
+
+		void NormalizeLinks(UInt32[] items, UInt32 numItems, UInt32 subValue)
+		{
+			for (UInt32 i = 0; i < numItems; i++)
+			{
+				UInt32 value = items[i];
+				if (value <= subValue)
+					value = kEmptyHashValue;
+				else
+					value -= subValue;
+				items[i] = value;
+			}
+		}
+
+		void Normalize()
+		{
+			UInt32 subValue = _pos - _cyclicBufferSize;
+			NormalizeLinks(_son, _cyclicBufferSize * 2, subValue);
+			NormalizeLinks(_hash, _hashSizeSum, subValue);
+			ReduceOffsets((Int32)subValue);
+		}
+
+		public void SetCutValue(UInt32 cutValue) { _cutValue = cutValue; }
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/LZ/LzInWindow.cs

@@ -0,0 +1,132 @@
+// LzInWindow.cs
+
+using System;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.LZ
+{
+	public class InWindow
+	{
+		public Byte[] _bufferBase = null; // pointer to buffer with data
+		System.IO.Stream _stream;
+		UInt32 _posLimit; // offset (from _buffer) of first byte when new block reading must be done
+		bool _streamEndWasReached; // if (true) then _streamPos shows real end of stream
+
+		UInt32 _pointerToLastSafePosition;
+
+		public UInt32 _bufferOffset;
+
+		public UInt32 _blockSize; // Size of Allocated memory block
+		public UInt32 _pos; // offset (from _buffer) of curent byte
+		UInt32 _keepSizeBefore; // how many BYTEs must be kept in buffer before _pos
+		UInt32 _keepSizeAfter; // how many BYTEs must be kept buffer after _pos
+		public UInt32 _streamPos; // offset (from _buffer) of first not read byte from Stream
+
+		public void MoveBlock()
+		{
+			UInt32 offset = (UInt32)(_bufferOffset) + _pos - _keepSizeBefore;
+			// we need one additional byte, since MovePos moves on 1 byte.
+			if (offset > 0)
+				offset--;
+			
+			UInt32 numBytes = (UInt32)(_bufferOffset) + _streamPos - offset;
+
+			// check negative offset ????
+			for (UInt32 i = 0; i < numBytes; i++)
+				_bufferBase[i] = _bufferBase[offset + i];
+			_bufferOffset -= offset;
+		}
+
+		public virtual void ReadBlock()
+		{
+			if (_streamEndWasReached)
+				return;
+			while (true)
+			{
+				int size = (int)((0 - _bufferOffset) + _blockSize - _streamPos);
+				if (size == 0)
+					return;
+				int numReadBytes = _stream.Read(_bufferBase, (int)(_bufferOffset + _streamPos), size);
+				if (numReadBytes == 0)
+				{
+					_posLimit = _streamPos;
+					UInt32 pointerToPostion = _bufferOffset + _posLimit;
+					if (pointerToPostion > _pointerToLastSafePosition)
+						_posLimit = (UInt32)(_pointerToLastSafePosition - _bufferOffset);
+
+					_streamEndWasReached = true;
+					return;
+				}
+				_streamPos += (UInt32)numReadBytes;
+				if (_streamPos >= _pos + _keepSizeAfter)
+					_posLimit = _streamPos - _keepSizeAfter;
+			}
+		}
+
+		void Free() { _bufferBase = null; }
+
+		public void Create(UInt32 keepSizeBefore, UInt32 keepSizeAfter, UInt32 keepSizeReserv)
+		{
+			_keepSizeBefore = keepSizeBefore;
+			_keepSizeAfter = keepSizeAfter;
+			UInt32 blockSize = keepSizeBefore + keepSizeAfter + keepSizeReserv;
+			if (_bufferBase == null || _blockSize != blockSize)
+			{
+				Free();
+				_blockSize = blockSize;
+				_bufferBase = new Byte[_blockSize];
+			}
+			_pointerToLastSafePosition = _blockSize - keepSizeAfter;
+		}
+
+		public void SetStream(System.IO.Stream stream) { _stream = stream; }
+		public void ReleaseStream() { _stream = null; }
+
+		public void Init()
+		{
+			_bufferOffset = 0;
+			_pos = 0;
+			_streamPos = 0;
+			_streamEndWasReached = false;
+			ReadBlock();
+		}
+
+		public void MovePos()
+		{
+			_pos++;
+			if (_pos > _posLimit)
+			{
+				UInt32 pointerToPostion = _bufferOffset + _pos;
+				if (pointerToPostion > _pointerToLastSafePosition)
+					MoveBlock();
+				ReadBlock();
+			}
+		}
+
+		public Byte GetIndexByte(Int32 index) { return _bufferBase[_bufferOffset + _pos + index]; }
+
+		// index + limit have not to exceed _keepSizeAfter;
+		public UInt32 GetMatchLen(Int32 index, UInt32 distance, UInt32 limit)
+		{
+			if (_streamEndWasReached)
+				if ((_pos + index) + limit > _streamPos)
+					limit = _streamPos - (UInt32)(_pos + index);
+			distance++;
+			// Byte *pby = _buffer + (size_t)_pos + index;
+			UInt32 pby = _bufferOffset + _pos + (UInt32)index;
+
+			UInt32 i;
+			for (i = 0; i < limit && _bufferBase[pby + i] == _bufferBase[pby + i - distance]; i++);
+			return i;
+		}
+
+		public UInt32 GetNumAvailableBytes() { return _streamPos - _pos; }
+
+		public void ReduceOffsets(Int32 subValue)
+		{
+			_bufferOffset += (UInt32)subValue;
+			_posLimit -= (UInt32)subValue;
+			_pos -= (UInt32)subValue;
+			_streamPos -= (UInt32)subValue;
+		}
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/LZ/LzOutWindow.cs

@@ -0,0 +1,135 @@
+// LzOutWindow.cs
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.LZ
+{
+    public class OutWindow
+    {
+        byte[] _buffer = null;
+        uint _pos;
+        uint _windowSize = 0;
+        uint _streamPos;
+        System.IO.Stream _stream;
+
+        public uint TrainSize = 0;
+
+        public void Create(uint windowSize)
+        {
+            if (_windowSize != windowSize)
+            {
+                // System.GC.Collect();
+                _buffer = new byte[windowSize];
+            }
+            _windowSize = windowSize;
+            _pos = 0;
+            _streamPos = 0;
+        }
+
+        public void Init(System.IO.Stream stream, bool solid)
+        {
+            ReleaseStream();
+            _stream = stream;
+            if (!solid)
+            {
+                _streamPos = 0;
+                _pos = 0;
+                TrainSize = 0;
+            }
+        }
+
+        public bool Train(System.IO.Stream stream)
+        {
+            long len = stream.Length;
+            uint size = (len < _windowSize) ? (uint)len : _windowSize;
+            TrainSize = size;
+            stream.Position = len - size;
+            _streamPos = _pos = 0;
+            while (size > 0)
+            {
+                uint curSize = _windowSize - _pos;
+                if (size < curSize)
+                    curSize = size;
+                int numReadBytes = stream.Read(_buffer, (int)_pos, (int)curSize);
+                if (numReadBytes == 0)
+                    return false;
+                size -= (uint)numReadBytes;
+                _pos += (uint)numReadBytes;
+                _streamPos += (uint)numReadBytes;
+                if (_pos == _windowSize)
+                    _streamPos = _pos = 0;
+            }
+            return true;
+        }
+
+        public void ReleaseStream()
+        {
+            Flush();
+            _stream = null;
+        }
+
+        public void Flush()
+        {
+            uint size = _pos - _streamPos;
+            if (size == 0)
+                return;
+            if (_stream != null)
+                _stream.Write(_buffer, (int)_streamPos, (int)size);
+            if (_pos >= _windowSize)
+                _pos = 0;
+            _streamPos = _pos;
+        }
+
+        public void CopyBlock(uint distance, uint len)
+        {
+            uint l = 0;
+
+            uint pos = _pos - distance - 1;
+            if (pos >= _windowSize)
+                pos += _windowSize;
+            for (; len > 0; len--)
+            {
+                if (pos >= _windowSize)
+                    pos = 0;
+                _buffer[_pos++] = _buffer[pos++];
+                if (_pos >= _windowSize)
+                    Flush();
+            }
+        }
+
+
+        public void CopyBlockRetBlock(uint distance, uint len, ref byte[] outbuffer)
+        {
+            if (outbuffer == null || outbuffer.Length < len)
+                outbuffer=new byte[len];
+
+            uint l = 0;
+
+            uint pos = _pos - distance - 1;
+            if (pos >= _windowSize)
+                pos += _windowSize;
+            for (; len > 0; len--)
+            {
+                if (pos >= _windowSize)
+                    pos = 0;
+                outbuffer[l++] = _buffer[pos];
+                _buffer[_pos++] = _buffer[pos++];
+                if (_pos >= _windowSize)
+                    Flush();
+            }
+        }
+
+        public void PutByte(byte b)
+        {
+            _buffer[_pos++] = b;
+            if (_pos >= _windowSize)
+                Flush();
+        }
+
+        public byte GetByte(uint distance)
+        {
+            uint pos = _pos - distance - 1;
+            if (pos >= _windowSize)
+                pos += _windowSize;
+            return _buffer[pos];
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Compress/LZMA/LzmaBase.cs

@@ -0,0 +1,76 @@
+// LzmaBase.cs
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.LZMA
+{
+	internal abstract class Base
+	{
+		public const uint kNumRepDistances = 4;
+		public const uint kNumStates = 12;
+
+		// static byte []kLiteralNextStates  = {0, 0, 0, 0, 1, 2, 3, 4,  5,  6,   4, 5};
+		// static byte []kMatchNextStates    = {7, 7, 7, 7, 7, 7, 7, 10, 10, 10, 10, 10};
+		// static byte []kRepNextStates      = {8, 8, 8, 8, 8, 8, 8, 11, 11, 11, 11, 11};
+		// static byte []kShortRepNextStates = {9, 9, 9, 9, 9, 9, 9, 11, 11, 11, 11, 11};
+
+		public struct State
+		{
+			public uint Index;
+			public void Init() { Index = 0; }
+			public void UpdateChar()
+			{
+				if (Index < 4) Index = 0;
+				else if (Index < 10) Index -= 3;
+				else Index -= 6;
+			}
+			public void UpdateMatch() { Index = (uint)(Index < 7 ? 7 : 10); }
+			public void UpdateRep() { Index = (uint)(Index < 7 ? 8 : 11); }
+			public void UpdateShortRep() { Index = (uint)(Index < 7 ? 9 : 11); }
+			public bool IsCharState() { return Index < 7; }
+		}
+
+		public const int kNumPosSlotBits = 6;
+		public const int kDicLogSizeMin = 0;
+		// public const int kDicLogSizeMax = 30;
+		// public const uint kDistTableSizeMax = kDicLogSizeMax * 2;
+
+		public const int kNumLenToPosStatesBits = 2; // it's for speed optimization
+		public const uint kNumLenToPosStates = 1 << kNumLenToPosStatesBits;
+
+		public const uint kMatchMinLen = 2;
+
+		public static uint GetLenToPosState(uint len)
+		{
+			len -= kMatchMinLen;
+			if (len < kNumLenToPosStates)
+				return len;
+			return (uint)(kNumLenToPosStates - 1);
+		}
+
+		public const int kNumAlignBits = 4;
+		public const uint kAlignTableSize = 1 << kNumAlignBits;
+		public const uint kAlignMask = (kAlignTableSize - 1);
+
+		public const uint kStartPosModelIndex = 4;
+		public const uint kEndPosModelIndex = 14;
+		public const uint kNumPosModels = kEndPosModelIndex - kStartPosModelIndex;
+
+		public const uint kNumFullDistances = 1 << ((int)kEndPosModelIndex / 2);
+
+		public const uint kNumLitPosStatesBitsEncodingMax = 4;
+		public const uint kNumLitContextBitsMax = 8;
+
+		public const int kNumPosStatesBitsMax = 4;
+		public const uint kNumPosStatesMax = (1 << kNumPosStatesBitsMax);
+		public const int kNumPosStatesBitsEncodingMax = 4;
+		public const uint kNumPosStatesEncodingMax = (1 << kNumPosStatesBitsEncodingMax);
+
+		public const int kNumLowLenBits = 3;
+		public const int kNumMidLenBits = 3;
+		public const int kNumHighLenBits = 8;
+		public const uint kNumLowLenSymbols = 1 << kNumLowLenBits;
+		public const uint kNumMidLenSymbols = 1 << kNumMidLenBits;
+		public const uint kNumLenSymbols = kNumLowLenSymbols + kNumMidLenSymbols +
+				(1 << kNumHighLenBits);
+		public const uint kMatchMaxLen = kMatchMinLen + kNumLenSymbols - 1;
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/LZMA/LzmaDecoder.cs

@@ -0,0 +1,597 @@
+// LzmaDecoder.cs
+
+using System;
+using System.IO;
+using ROMVault2.SupportedFiles.SevenZip.Common;
+using ROMVault2.SupportedFiles.SevenZip.Compress.RangeCoder;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.LZMA
+{
+    public class Decoder : Stream, ICoder, ISetDecoderProperties
+    {
+        class LenDecoder
+        {
+            BitDecoder m_Choice = new BitDecoder();
+            BitDecoder m_Choice2 = new BitDecoder();
+            BitTreeDecoder[] m_LowCoder = new BitTreeDecoder[Base.kNumPosStatesMax];
+            BitTreeDecoder[] m_MidCoder = new BitTreeDecoder[Base.kNumPosStatesMax];
+            BitTreeDecoder m_HighCoder = new BitTreeDecoder(Base.kNumHighLenBits);
+            uint m_NumPosStates = 0;
+
+            public void Create(uint numPosStates)
+            {
+                for (uint posState = m_NumPosStates; posState < numPosStates; posState++)
+                {
+                    m_LowCoder[posState] = new BitTreeDecoder(Base.kNumLowLenBits);
+                    m_MidCoder[posState] = new BitTreeDecoder(Base.kNumMidLenBits);
+                }
+                m_NumPosStates = numPosStates;
+            }
+
+            public void Init()
+            {
+                m_Choice.Init();
+                for (uint posState = 0; posState < m_NumPosStates; posState++)
+                {
+                    m_LowCoder[posState].Init();
+                    m_MidCoder[posState].Init();
+                }
+                m_Choice2.Init();
+                m_HighCoder.Init();
+            }
+
+            public uint Decode(RangeCoder.Decoder rangeDecoder, uint posState)
+            {
+                if (m_Choice.Decode(rangeDecoder) == 0)
+                    return m_LowCoder[posState].Decode(rangeDecoder);
+                else
+                {
+                    uint symbol = Base.kNumLowLenSymbols;
+                    if (m_Choice2.Decode(rangeDecoder) == 0)
+                        symbol += m_MidCoder[posState].Decode(rangeDecoder);
+                    else
+                    {
+                        symbol += Base.kNumMidLenSymbols;
+                        symbol += m_HighCoder.Decode(rangeDecoder);
+                    }
+                    return symbol;
+                }
+            }
+        }
+
+        class LiteralDecoder
+        {
+            struct Decoder2
+            {
+                BitDecoder[] m_Decoders;
+                public void Create() { m_Decoders = new BitDecoder[0x300]; }
+                public void Init() { for (int i = 0; i < 0x300; i++) m_Decoders[i].Init(); }
+
+                public byte DecodeNormal(RangeCoder.Decoder rangeDecoder)
+                {
+                    uint symbol = 1;
+                    do
+                        symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder);
+                    while (symbol < 0x100);
+                    return (byte)symbol;
+                }
+
+                public byte DecodeWithMatchByte(RangeCoder.Decoder rangeDecoder, byte matchByte)
+                {
+                    uint symbol = 1;
+                    do
+                    {
+                        uint matchBit = (uint)(matchByte >> 7) & 1;
+                        matchByte <<= 1;
+                        uint bit = m_Decoders[((1 + matchBit) << 8) + symbol].Decode(rangeDecoder);
+                        symbol = (symbol << 1) | bit;
+                        if (matchBit != bit)
+                        {
+                            while (symbol < 0x100)
+                                symbol = (symbol << 1) | m_Decoders[symbol].Decode(rangeDecoder);
+                            break;
+                        }
+                    }
+                    while (symbol < 0x100);
+                    return (byte)symbol;
+                }
+            }
+
+            Decoder2[] m_Coders;
+            int m_NumPrevBits;
+            int m_NumPosBits;
+            uint m_PosMask;
+
+            public void Create(int numPosBits, int numPrevBits)
+            {
+                if (m_Coders != null && m_NumPrevBits == numPrevBits &&
+                    m_NumPosBits == numPosBits)
+                    return;
+                m_NumPosBits = numPosBits;
+                m_PosMask = ((uint)1 << numPosBits) - 1;
+                m_NumPrevBits = numPrevBits;
+                uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits);
+                m_Coders = new Decoder2[numStates];
+                for (uint i = 0; i < numStates; i++)
+                    m_Coders[i].Create();
+            }
+
+            public void Init()
+            {
+                uint numStates = (uint)1 << (m_NumPrevBits + m_NumPosBits);
+                for (uint i = 0; i < numStates; i++)
+                    m_Coders[i].Init();
+            }
+
+            uint GetState(uint pos, byte prevByte)
+            { return ((pos & m_PosMask) << m_NumPrevBits) + (uint)(prevByte >> (8 - m_NumPrevBits)); }
+
+            public byte DecodeNormal(RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte)
+            { return m_Coders[GetState(pos, prevByte)].DecodeNormal(rangeDecoder); }
+
+            public byte DecodeWithMatchByte(RangeCoder.Decoder rangeDecoder, uint pos, byte prevByte, byte matchByte)
+            { return m_Coders[GetState(pos, prevByte)].DecodeWithMatchByte(rangeDecoder, matchByte); }
+        };
+
+        LZ.OutWindow m_OutWindow = new LZ.OutWindow();
+        RangeCoder.Decoder m_RangeDecoder = new RangeCoder.Decoder();
+
+        BitDecoder[] m_IsMatchDecoders = new BitDecoder[Base.kNumStates << Base.kNumPosStatesBitsMax];
+        BitDecoder[] m_IsRepDecoders = new BitDecoder[Base.kNumStates];
+        BitDecoder[] m_IsRepG0Decoders = new BitDecoder[Base.kNumStates];
+        BitDecoder[] m_IsRepG1Decoders = new BitDecoder[Base.kNumStates];
+        BitDecoder[] m_IsRepG2Decoders = new BitDecoder[Base.kNumStates];
+        BitDecoder[] m_IsRep0LongDecoders = new BitDecoder[Base.kNumStates << Base.kNumPosStatesBitsMax];
+
+        BitTreeDecoder[] m_PosSlotDecoder = new BitTreeDecoder[Base.kNumLenToPosStates];
+        BitDecoder[] m_PosDecoders = new BitDecoder[Base.kNumFullDistances - Base.kEndPosModelIndex];
+
+        BitTreeDecoder m_PosAlignDecoder = new BitTreeDecoder(Base.kNumAlignBits);
+
+        LenDecoder m_LenDecoder = new LenDecoder();
+        LenDecoder m_RepLenDecoder = new LenDecoder();
+
+        LiteralDecoder m_LiteralDecoder = new LiteralDecoder();
+
+        uint m_DictionarySize;
+        uint m_DictionarySizeCheck;
+
+        uint m_PosStateMask;
+
+        public Decoder()
+        {
+            m_DictionarySize = 0xFFFFFFFF;
+            for (int i = 0; i < Base.kNumLenToPosStates; i++)
+                m_PosSlotDecoder[i] = new BitTreeDecoder(Base.kNumPosSlotBits);
+        }
+
+        void SetDictionarySize(uint dictionarySize)
+        {
+            if (m_DictionarySize != dictionarySize)
+            {
+                m_DictionarySize = dictionarySize;
+                m_DictionarySizeCheck = Math.Max(m_DictionarySize, 1);
+                uint blockSize = Math.Max(m_DictionarySizeCheck, (1 << 12));
+                m_OutWindow.Create(blockSize);
+            }
+        }
+
+        void SetLiteralProperties(int lp, int lc)
+        {
+            if (lp > 8)
+                throw new InvalidParamException();
+            if (lc > 8)
+                throw new InvalidParamException();
+            m_LiteralDecoder.Create(lp, lc);
+        }
+
+        void SetPosBitsProperties(int pb)
+        {
+            if (pb > Base.kNumPosStatesBitsMax)
+                throw new InvalidParamException();
+            uint numPosStates = (uint)1 << pb;
+            m_LenDecoder.Create(numPosStates);
+            m_RepLenDecoder.Create(numPosStates);
+            m_PosStateMask = numPosStates - 1;
+        }
+
+        bool _solid = false;
+        void Init(Stream inStream, Stream outStream)
+        {
+            m_RangeDecoder.Init(inStream);
+            m_OutWindow.Init(outStream, _solid);
+
+            uint i;
+            for (i = 0; i < Base.kNumStates; i++)
+            {
+                for (uint j = 0; j <= m_PosStateMask; j++)
+                {
+                    uint index = (i << Base.kNumPosStatesBitsMax) + j;
+                    m_IsMatchDecoders[index].Init();
+                    m_IsRep0LongDecoders[index].Init();
+                }
+                m_IsRepDecoders[i].Init();
+                m_IsRepG0Decoders[i].Init();
+                m_IsRepG1Decoders[i].Init();
+                m_IsRepG2Decoders[i].Init();
+            }
+
+            m_LiteralDecoder.Init();
+            for (i = 0; i < Base.kNumLenToPosStates; i++)
+                m_PosSlotDecoder[i].Init();
+            // m_PosSpecDecoder.Init();
+            for (i = 0; i < Base.kNumFullDistances - Base.kEndPosModelIndex; i++)
+                m_PosDecoders[i].Init();
+
+            m_LenDecoder.Init();
+            m_RepLenDecoder.Init();
+            m_PosAlignDecoder.Init();
+        }
+
+        public void Code(Stream inStream, Stream outStream, Int64 inSize, Int64 outSize, ICodeProgress progress)
+        {
+            Init(inStream, outStream);
+
+            Base.State state = new Base.State();
+            state.Init();
+            uint rep0 = 0, rep1 = 0, rep2 = 0, rep3 = 0;
+
+            UInt64 nowPos64 = 0;
+            UInt64 outSize64 = (UInt64)outSize;
+            if (nowPos64 < outSize64)
+            {
+                if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
+                    throw new DataErrorException();
+                state.UpdateChar();
+                byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
+                m_OutWindow.PutByte(b);
+                nowPos64++;
+            }
+            while (nowPos64 < outSize64)
+            {
+                // UInt64 next = Math.Min(nowPos64 + (1 << 18), outSize64);
+                // while(nowPos64 < next)
+                {
+                    uint posState = (uint)nowPos64 & m_PosStateMask;
+                    if (m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
+                    {
+                        byte b;
+                        byte prevByte = m_OutWindow.GetByte(0);
+                        if (!state.IsCharState())
+                            b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
+                                (uint)nowPos64, prevByte, m_OutWindow.GetByte(rep0));
+                        else
+                            b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
+                        m_OutWindow.PutByte(b);
+                        state.UpdateChar();
+                        nowPos64++;
+                    }
+                    else
+                    {
+                        uint len;
+                        if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
+                        {
+                            if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
+                            {
+                                if (m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
+                                {
+                                    state.UpdateShortRep();
+                                    m_OutWindow.PutByte(m_OutWindow.GetByte(rep0));
+                                    nowPos64++;
+                                    continue;
+                                }
+                            }
+                            else
+                            {
+                                UInt32 distance;
+                                if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
+                                {
+                                    distance = rep1;
+                                }
+                                else
+                                {
+                                    if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
+                                        distance = rep2;
+                                    else
+                                    {
+                                        distance = rep3;
+                                        rep3 = rep2;
+                                    }
+                                    rep2 = rep1;
+                                }
+                                rep1 = rep0;
+                                rep0 = distance;
+                            }
+                            len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
+                            state.UpdateRep();
+                        }
+                        else
+                        {
+                            rep3 = rep2;
+                            rep2 = rep1;
+                            rep1 = rep0;
+                            len = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
+                            state.UpdateMatch();
+                            uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
+                            if (posSlot >= Base.kStartPosModelIndex)
+                            {
+                                int numDirectBits = (int)((posSlot >> 1) - 1);
+                                rep0 = ((2 | (posSlot & 1)) << numDirectBits);
+                                if (posSlot < Base.kEndPosModelIndex)
+                                    rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
+                                            rep0 - posSlot - 1, m_RangeDecoder, numDirectBits);
+                                else
+                                {
+                                    rep0 += (m_RangeDecoder.DecodeDirectBits(
+                                        numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
+                                    rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
+                                }
+                            }
+                            else
+                                rep0 = posSlot;
+                        }
+                        if (rep0 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck)
+                        {
+                            if (rep0 == 0xFFFFFFFF)
+                                break;
+                            throw new DataErrorException();
+                        }
+                        m_OutWindow.CopyBlock(rep0, len);
+                        nowPos64 += len;
+                    }
+                }
+            }
+            m_OutWindow.Flush();
+            m_OutWindow.ReleaseStream();
+            m_RangeDecoder.ReleaseStream();
+        }
+
+        public void SetDecoderProperties(byte[] properties)
+        {
+            if (properties.Length < 5)
+                throw new InvalidParamException();
+            int lc = properties[0] % 9;
+            int remainder = properties[0] / 9;
+            int lp = remainder % 5;
+            int pb = remainder / 5;
+            if (pb > Base.kNumPosStatesBitsMax)
+                throw new InvalidParamException();
+            UInt32 dictionarySize = 0;
+            for (int i = 0; i < 4; i++)
+                dictionarySize += ((UInt32)(properties[1 + i])) << (i * 8);
+            SetDictionarySize(dictionarySize);
+            SetLiteralProperties(lp, lc);
+            SetPosBitsProperties(pb);
+        }
+
+        public bool Train(System.IO.Stream stream)
+        {
+            _solid = true;
+            return m_OutWindow.Train(stream);
+        }
+
+
+
+
+
+        private Base.State state;
+        private uint rep0, rep1, rep2, rep3;
+        private UInt64 nowPos64;
+        private bool init;
+
+        private byte[] outbuffer;
+        private uint outbufferpos;
+        private uint outbufferlen;
+        private uint totalout;
+        public void SetUpStream(Stream inStream)
+        {
+            Init(inStream, null);
+
+            state = new Base.State();
+            state.Init();
+
+            rep0 = 0;
+            rep1 = 0;
+            rep2 = 0;
+            rep3 = 0;
+            nowPos64 = 0;
+
+            init = false;
+            outbufferpos = 0;
+            outbufferlen = 0;
+            totalout = 0;
+        }
+        public void ReleaseStream()
+        {
+            m_RangeDecoder.ReleaseStream();
+        }
+
+        private void GetNextBytes()
+        {
+            if (!init)
+            {
+                if (m_IsMatchDecoders[state.Index << Base.kNumPosStatesBitsMax].Decode(m_RangeDecoder) != 0)
+                    throw new DataErrorException();
+                state.UpdateChar();
+                byte b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, 0, 0);
+                m_OutWindow.PutByte(b);
+                nowPos64++;
+                init = true;
+
+                outbuffer=new byte[1];
+                outbuffer[0] = b;
+                outbufferlen = 1;
+                return;
+            }
+
+            uint posState = (uint)nowPos64 & m_PosStateMask;
+            if (m_IsMatchDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
+            {
+                byte b;
+                byte prevByte = m_OutWindow.GetByte(0);
+                if (!state.IsCharState())
+                    b = m_LiteralDecoder.DecodeWithMatchByte(m_RangeDecoder,
+                        (uint)nowPos64, prevByte, m_OutWindow.GetByte(rep0));
+                else
+                    b = m_LiteralDecoder.DecodeNormal(m_RangeDecoder, (uint)nowPos64, prevByte);
+                m_OutWindow.PutByte(b);
+                state.UpdateChar();
+                nowPos64++;
+
+                outbuffer[0] = b;
+                outbufferlen = 1;
+                return;
+
+            }
+            uint len;
+            if (m_IsRepDecoders[state.Index].Decode(m_RangeDecoder) == 1)
+            {
+                if (m_IsRepG0Decoders[state.Index].Decode(m_RangeDecoder) == 0)
+                {
+                    if (m_IsRep0LongDecoders[(state.Index << Base.kNumPosStatesBitsMax) + posState].Decode(m_RangeDecoder) == 0)
+                    {
+                        state.UpdateShortRep();
+                        byte b = m_OutWindow.GetByte(rep0);
+                        m_OutWindow.PutByte(b);
+                        nowPos64++;
+
+                        outbuffer[0] = b;
+                        outbufferlen = 1;
+                        return;
+                    }
+                }
+                else
+                {
+                    UInt32 distance;
+                    if (m_IsRepG1Decoders[state.Index].Decode(m_RangeDecoder) == 0)
+                    {
+                        distance = rep1;
+                    }
+                    else
+                    {
+                        if (m_IsRepG2Decoders[state.Index].Decode(m_RangeDecoder) == 0)
+                            distance = rep2;
+                        else
+                        {
+                            distance = rep3;
+                            rep3 = rep2;
+                        }
+                        rep2 = rep1;
+                    }
+                    rep1 = rep0;
+                    rep0 = distance;
+                }
+                len = m_RepLenDecoder.Decode(m_RangeDecoder, posState) + Base.kMatchMinLen;
+                state.UpdateRep();
+            }
+            else
+            {
+                rep3 = rep2;
+                rep2 = rep1;
+                rep1 = rep0;
+                len = Base.kMatchMinLen + m_LenDecoder.Decode(m_RangeDecoder, posState);
+                state.UpdateMatch();
+                uint posSlot = m_PosSlotDecoder[Base.GetLenToPosState(len)].Decode(m_RangeDecoder);
+                if (posSlot >= Base.kStartPosModelIndex)
+                {
+                    int numDirectBits = (int)((posSlot >> 1) - 1);
+                    rep0 = ((2 | (posSlot & 1)) << numDirectBits);
+                    if (posSlot < Base.kEndPosModelIndex)
+                        rep0 += BitTreeDecoder.ReverseDecode(m_PosDecoders,
+                                rep0 - posSlot - 1, m_RangeDecoder, numDirectBits);
+                    else
+                    {
+                        rep0 += (m_RangeDecoder.DecodeDirectBits(
+                            numDirectBits - Base.kNumAlignBits) << Base.kNumAlignBits);
+                        rep0 += m_PosAlignDecoder.ReverseDecode(m_RangeDecoder);
+                    }
+                }
+                else
+                    rep0 = posSlot;
+            }
+            if (rep0 >= m_OutWindow.TrainSize + nowPos64 || rep0 >= m_DictionarySizeCheck)
+            {
+                if (rep0 == 0xFFFFFFFF)
+                    return;
+                throw new DataErrorException();
+            }
+            m_OutWindow.CopyBlockRetBlock(rep0, len, ref outbuffer);
+            outbufferlen = len;
+            nowPos64 += len;
+        }
+
+        public override void Flush()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            if (origin != SeekOrigin.Current)
+                throw new NotImplementedException();
+
+            for (int i = 0; i < offset; i++)
+            {
+                if (outbufferpos == outbufferlen)
+                {
+                    GetNextBytes();
+                    outbufferpos = 0;
+                }
+                outbufferpos++;
+                totalout++;
+            }
+            return totalout;
+        }
+
+        public override void SetLength(long value)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            for (int i = 0; i < count; i++)
+            {
+                if (outbufferpos == outbufferlen)
+                {
+                    GetNextBytes();
+                    outbufferpos = 0;
+                }
+                buffer[offset + i] = outbuffer[outbufferpos++];
+                totalout++;
+            }
+            return count;
+        }
+
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override bool CanRead
+        {
+            get { return true; }
+        }
+
+        public override bool CanSeek
+        {
+            get { throw new NotImplementedException(); }
+        }
+
+        public override bool CanWrite
+        {
+            get { return false; }
+        }
+
+        public override long Length
+        {
+            get { throw new NotImplementedException(); }
+        }
+
+        public override long Position
+        {
+            get { return totalout; }
+            set { }
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Compress/RangeCoder/RangeCoder.cs

@@ -0,0 +1,234 @@
+using System;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.RangeCoder
+{
+	class Encoder
+	{
+		public const uint kTopValue = (1 << 24);
+
+		System.IO.Stream Stream;
+
+		public UInt64 Low;
+		public uint Range;
+		uint _cacheSize;
+		byte _cache;
+
+		long StartPosition;
+
+		public void SetStream(System.IO.Stream stream)
+		{
+			Stream = stream;
+		}
+
+		public void ReleaseStream()
+		{
+			Stream = null;
+		}
+
+		public void Init()
+		{
+			StartPosition = Stream.Position;
+
+			Low = 0;
+			Range = 0xFFFFFFFF;
+			_cacheSize = 1;
+			_cache = 0;
+		}
+
+		public void FlushData()
+		{
+			for (int i = 0; i < 5; i++)
+				ShiftLow();
+		}
+
+		public void FlushStream()
+		{
+			Stream.Flush();
+		}
+
+		public void CloseStream()
+		{
+			Stream.Close();
+		}
+
+		public void Encode(uint start, uint size, uint total)
+		{
+			Low += start * (Range /= total);
+			Range *= size;
+			while (Range < kTopValue)
+			{
+				Range <<= 8;
+				ShiftLow();
+			}
+		}
+
+		public void ShiftLow()
+		{
+			if ((uint)Low < (uint)0xFF000000 || (uint)(Low >> 32) == 1)
+			{
+				byte temp = _cache;
+				do
+				{
+					Stream.WriteByte((byte)(temp + (Low >> 32)));
+					temp = 0xFF;
+				}
+				while (--_cacheSize != 0);
+				_cache = (byte)(((uint)Low) >> 24);
+			}
+			_cacheSize++;
+			Low = ((uint)Low) << 8;
+		}
+
+		public void EncodeDirectBits(uint v, int numTotalBits)
+		{
+			for (int i = numTotalBits - 1; i >= 0; i--)
+			{
+				Range >>= 1;
+				if (((v >> i) & 1) == 1)
+					Low += Range;
+				if (Range < kTopValue)
+				{
+					Range <<= 8;
+					ShiftLow();
+				}
+			}
+		}
+
+		public void EncodeBit(uint size0, int numTotalBits, uint symbol)
+		{
+			uint newBound = (Range >> numTotalBits) * size0;
+			if (symbol == 0)
+				Range = newBound;
+			else
+			{
+				Low += newBound;
+				Range -= newBound;
+			}
+			while (Range < kTopValue)
+			{
+				Range <<= 8;
+				ShiftLow();
+			}
+		}
+
+		public long GetProcessedSizeAdd()
+		{
+			return _cacheSize +
+				Stream.Position - StartPosition + 4;
+			// (long)Stream.GetProcessedSize();
+		}
+	}
+
+	class Decoder
+	{
+		public const uint kTopValue = (1 << 24);
+		public uint Range;
+		public uint Code;
+		// public Buffer.InBuffer Stream = new Buffer.InBuffer(1 << 16);
+		public System.IO.Stream Stream;
+
+		public void Init(System.IO.Stream stream)
+		{
+			// Stream.Init(stream);
+			Stream = stream;
+
+			Code = 0;
+			Range = 0xFFFFFFFF;
+			for (int i = 0; i < 5; i++)
+				Code = (Code << 8) | (byte)Stream.ReadByte();
+		}
+
+		public void ReleaseStream()
+		{
+			// Stream.ReleaseStream();
+			Stream = null;
+		}
+
+		public void CloseStream()
+		{
+			Stream.Close();
+		}
+
+		public void Normalize()
+		{
+			while (Range < kTopValue)
+			{
+				Code = (Code << 8) | (byte)Stream.ReadByte();
+				Range <<= 8;
+			}
+		}
+
+		public void Normalize2()
+		{
+			if (Range < kTopValue)
+			{
+				Code = (Code << 8) | (byte)Stream.ReadByte();
+				Range <<= 8;
+			}
+		}
+
+		public uint GetThreshold(uint total)
+		{
+			return Code / (Range /= total);
+		}
+
+		public void Decode(uint start, uint size, uint total)
+		{
+			Code -= start * Range;
+			Range *= size;
+			Normalize();
+		}
+
+		public uint DecodeDirectBits(int numTotalBits)
+		{
+			uint range = Range;
+			uint code = Code;
+			uint result = 0;
+			for (int i = numTotalBits; i > 0; i--)
+			{
+				range >>= 1;
+				/*
+				result <<= 1;
+				if (code >= range)
+				{
+					code -= range;
+					result |= 1;
+				}
+				*/
+				uint t = (code - range) >> 31;
+				code -= range & (t - 1);
+				result = (result << 1) | (1 - t);
+
+				if (range < kTopValue)
+				{
+					code = (code << 8) | (byte)Stream.ReadByte();
+					range <<= 8;
+				}
+			}
+			Range = range;
+			Code = code;
+			return result;
+		}
+
+		public uint DecodeBit(uint size0, int numTotalBits)
+		{
+			uint newBound = (Range >> numTotalBits) * size0;
+			uint symbol;
+			if (Code < newBound)
+			{
+				symbol = 0;
+				Range = newBound;
+			}
+			else
+			{
+				symbol = 1;
+				Code -= newBound;
+				Range -= newBound;
+			}
+			Normalize();
+			return symbol;
+		}
+
+		// ulong GetProcessedSize() {return Stream.GetProcessedSize(); }
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/RangeCoder/RangeCoderBit.cs

@@ -0,0 +1,117 @@
+using System;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.RangeCoder
+{
+	struct BitEncoder
+	{
+		public const int kNumBitModelTotalBits = 11;
+		public const uint kBitModelTotal = (1 << kNumBitModelTotalBits);
+		const int kNumMoveBits = 5;
+		const int kNumMoveReducingBits = 2;
+		public const int kNumBitPriceShiftBits = 6;
+
+		uint Prob;
+
+		public void Init() { Prob = kBitModelTotal >> 1; }
+
+		public void UpdateModel(uint symbol)
+		{
+			if (symbol == 0)
+				Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
+			else
+				Prob -= (Prob) >> kNumMoveBits;
+		}
+
+		public void Encode(Encoder encoder, uint symbol)
+		{
+			// encoder.EncodeBit(Prob, kNumBitModelTotalBits, symbol);
+			// UpdateModel(symbol);
+			uint newBound = (encoder.Range >> kNumBitModelTotalBits) * Prob;
+			if (symbol == 0)
+			{
+				encoder.Range = newBound;
+				Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
+			}
+			else
+			{
+				encoder.Low += newBound;
+				encoder.Range -= newBound;
+				Prob -= (Prob) >> kNumMoveBits;
+			}
+			if (encoder.Range < Encoder.kTopValue)
+			{
+				encoder.Range <<= 8;
+				encoder.ShiftLow();
+			}
+		}
+
+		private static UInt32[] ProbPrices = new UInt32[kBitModelTotal >> kNumMoveReducingBits];
+
+		static BitEncoder()
+		{
+			const int kNumBits = (kNumBitModelTotalBits - kNumMoveReducingBits);
+			for (int i = kNumBits - 1; i >= 0; i--)
+			{
+				UInt32 start = (UInt32)1 << (kNumBits - i - 1);
+				UInt32 end = (UInt32)1 << (kNumBits - i);
+				for (UInt32 j = start; j < end; j++)
+					ProbPrices[j] = ((UInt32)i << kNumBitPriceShiftBits) +
+						(((end - j) << kNumBitPriceShiftBits) >> (kNumBits - i - 1));
+			}
+		}
+
+		public uint GetPrice(uint symbol)
+		{
+			return ProbPrices[(((Prob - symbol) ^ ((-(int)symbol))) & (kBitModelTotal - 1)) >> kNumMoveReducingBits];
+		}
+	  public uint GetPrice0() { return ProbPrices[Prob >> kNumMoveReducingBits]; }
+		public uint GetPrice1() { return ProbPrices[(kBitModelTotal - Prob) >> kNumMoveReducingBits]; }
+	}
+
+	struct BitDecoder
+	{
+		public const int kNumBitModelTotalBits = 11;
+		public const uint kBitModelTotal = (1 << kNumBitModelTotalBits);
+		const int kNumMoveBits = 5;
+
+		uint Prob;
+
+		public void UpdateModel(int numMoveBits, uint symbol)
+		{
+			if (symbol == 0)
+				Prob += (kBitModelTotal - Prob) >> numMoveBits;
+			else
+				Prob -= (Prob) >> numMoveBits;
+		}
+
+		public void Init() { Prob = kBitModelTotal >> 1; }
+
+		public uint Decode(RangeCoder.Decoder rangeDecoder)
+		{
+			uint newBound = (uint)(rangeDecoder.Range >> kNumBitModelTotalBits) * (uint)Prob;
+			if (rangeDecoder.Code < newBound)
+			{
+				rangeDecoder.Range = newBound;
+				Prob += (kBitModelTotal - Prob) >> kNumMoveBits;
+				if (rangeDecoder.Range < Decoder.kTopValue)
+				{
+					rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte();
+					rangeDecoder.Range <<= 8;
+				}
+				return 0;
+			}
+			else
+			{
+				rangeDecoder.Range -= newBound;
+				rangeDecoder.Code -= newBound;
+				Prob -= (Prob) >> kNumMoveBits;
+				if (rangeDecoder.Range < Decoder.kTopValue)
+				{
+					rangeDecoder.Code = (rangeDecoder.Code << 8) | (byte)rangeDecoder.Stream.ReadByte();
+					rangeDecoder.Range <<= 8;
+				}
+				return 1;
+			}
+		}
+	}
+}

ROMVault2/SupportedFiles/SevenZip/Compress/RangeCoder/RangeCoderBitTree.cs

@@ -0,0 +1,160 @@
+using System;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Compress.RangeCoder
+{
+	struct BitTreeEncoder
+	{
+		BitEncoder[] Models;
+		int NumBitLevels;
+
+		public BitTreeEncoder(int numBitLevels)
+		{
+			NumBitLevels = numBitLevels;
+			Models = new BitEncoder[1 << numBitLevels];
+		}
+
+		public void Init()
+		{
+			for (uint i = 1; i < (1 << NumBitLevels); i++)
+				Models[i].Init();
+		}
+
+		public void Encode(Encoder rangeEncoder, UInt32 symbol)
+		{
+			UInt32 m = 1;
+			for (int bitIndex = NumBitLevels; bitIndex > 0; )
+			{
+				bitIndex--;
+				UInt32 bit = (symbol >> bitIndex) & 1;
+				Models[m].Encode(rangeEncoder, bit);
+				m = (m << 1) | bit;
+			}
+		}
+
+		public void ReverseEncode(Encoder rangeEncoder, UInt32 symbol)
+		{
+			UInt32 m = 1;
+			for (UInt32 i = 0; i < NumBitLevels; i++)
+			{
+				UInt32 bit = symbol & 1;
+				Models[m].Encode(rangeEncoder, bit);
+				m = (m << 1) | bit;
+				symbol >>= 1;
+			}
+		}
+
+		public UInt32 GetPrice(UInt32 symbol)
+		{
+			UInt32 price = 0;
+			UInt32 m = 1;
+			for (int bitIndex = NumBitLevels; bitIndex > 0; )
+			{
+				bitIndex--;
+				UInt32 bit = (symbol >> bitIndex) & 1;
+				price += Models[m].GetPrice(bit);
+				m = (m << 1) + bit;
+			}
+			return price;
+		}
+
+		public UInt32 ReverseGetPrice(UInt32 symbol)
+		{
+			UInt32 price = 0;
+			UInt32 m = 1;
+			for (int i = NumBitLevels; i > 0; i--)
+			{
+				UInt32 bit = symbol & 1;
+				symbol >>= 1;
+				price += Models[m].GetPrice(bit);
+				m = (m << 1) | bit;
+			}
+			return price;
+		}
+
+		public static UInt32 ReverseGetPrice(BitEncoder[] Models, UInt32 startIndex,
+			int NumBitLevels, UInt32 symbol)
+		{
+			UInt32 price = 0;
+			UInt32 m = 1;
+			for (int i = NumBitLevels; i > 0; i--)
+			{
+				UInt32 bit = symbol & 1;
+				symbol >>= 1;
+				unchecked
+				{
+					price += Models[startIndex + m].GetPrice(bit);
+				}
+				m = (m << 1) | bit;
+			}
+			return price;
+		}
+
+		public static void ReverseEncode(BitEncoder[] Models, UInt32 startIndex,
+			Encoder rangeEncoder, int NumBitLevels, UInt32 symbol)
+		{
+			UInt32 m = 1;
+			for (int i = 0; i < NumBitLevels; i++)
+			{
+				UInt32 bit = symbol & 1;
+				Models[startIndex + m].Encode(rangeEncoder, bit);
+				m = (m << 1) | bit;
+				symbol >>= 1;
+			}
+		}
+	}
+
+	struct BitTreeDecoder
+	{
+		BitDecoder[] Models;
+		int NumBitLevels;
+
+		public BitTreeDecoder(int numBitLevels)
+		{
+			NumBitLevels = numBitLevels;
+			Models = new BitDecoder[1 << numBitLevels];
+		}
+
+		public void Init()
+		{
+			for (uint i = 1; i < (1 << NumBitLevels); i++)
+				Models[i].Init();
+		}
+
+		public uint Decode(RangeCoder.Decoder rangeDecoder)
+		{
+			uint m = 1;
+			for (int bitIndex = NumBitLevels; bitIndex > 0; bitIndex--)
+				m = (m << 1) + Models[m].Decode(rangeDecoder);
+			return m - ((uint)1 << NumBitLevels);
+		}
+
+		public uint ReverseDecode(RangeCoder.Decoder rangeDecoder)
+		{
+			uint m = 1;
+			uint symbol = 0;
+			for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
+			{
+				uint bit = Models[m].Decode(rangeDecoder);
+				m <<= 1;
+				m += bit;
+				symbol |= (bit << bitIndex);
+			}
+			return symbol;
+		}
+
+		public static uint ReverseDecode(BitDecoder[] Models, UInt32 startIndex,
+			RangeCoder.Decoder rangeDecoder, int NumBitLevels)
+		{
+			uint m = 1;
+			uint symbol = 0;
+			for (int bitIndex = 0; bitIndex < NumBitLevels; bitIndex++)
+			{
+				uint bit = Models[startIndex + m].Decode(rangeDecoder);
+				m <<= 1;
+				m += bit;
+				symbol |= (bit << bitIndex);
+			}
+			return symbol;
+		}
+	}
+}

ROMVault2/SupportedFiles/SevenZip/DirUtil.cs

@@ -0,0 +1,31 @@
+using System;
+using ROMVault2.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip
+{
+    public static class DirUtil
+    {
+        public static void CreateDirForFile(string sFilename)
+        {
+            string strTemp = Path.GetDirectoryName(sFilename);
+
+            if (String.IsNullOrEmpty(strTemp)) return;
+
+            if (Directory.Exists(strTemp)) return;
+
+
+            while (strTemp.Length > 0 && !Directory.Exists(strTemp))
+            {
+                int pos = strTemp.LastIndexOf(Path.DirectorySeparatorChar);
+                if (pos < 0) pos = 0;
+                strTemp = strTemp.Substring(0, pos);
+            }
+
+            while (sFilename.IndexOf(Path.DirectorySeparatorChar, strTemp.Length + 1) > 0)
+            {
+                strTemp = sFilename.Substring(0, sFilename.IndexOf(Path.DirectorySeparatorChar, strTemp.Length + 1));
+                Directory.CreateDirectory(strTemp);
+            }
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Filters/BCJ2Filter.cs

@@ -0,0 +1,207 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Filters
+{
+    public class BCJ2Filter : Stream
+    {
+        private Stream baseStream;
+        private byte[] input = new byte[4096];
+        private int inputOffset = 0;
+        private int inputCount = 0;
+        private bool endReached = false;
+
+        private long position = 0;
+        private byte[] output = new byte[4];
+        private int outputOffset = 0;
+        private int outputCount = 0;
+
+        private byte[] control;
+        private byte[] data1;
+        private byte[] data2;
+
+        private int controlPos = 0;
+        private int data1Pos = 0;
+        private int data2Pos = 0;
+
+        private ushort[] p = new ushort[256 + 2];
+        private uint range, code;
+        private byte prevByte = 0;
+
+        private const int kNumTopBits = 24;
+        private const int kTopValue = 1 << kNumTopBits;
+
+        private const int kNumBitModelTotalBits = 11;
+        private const int kBitModelTotal = 1 << kNumBitModelTotalBits;
+        private const int kNumMoveBits = 5;
+
+        private static bool IsJ(byte b0, byte b1)
+        {
+            return (b1 & 0xFE) == 0xE8 || IsJcc(b0, b1);
+        }
+
+        private static bool IsJcc(byte b0, byte b1)
+        {
+            return b0 == 0x0F && (b1 & 0xF0) == 0x80;
+        }
+
+        public BCJ2Filter(byte[] control, byte[] data1, byte[] data2, Stream baseStream)
+        {
+            this.control = control;
+            this.data1 = data1;
+            this.data2 = data2;
+            this.baseStream = baseStream;
+
+            int i;
+            for (i = 0; i < p.Length; i++)
+                p[i] = kBitModelTotal >> 1;
+
+            code = 0;
+            range = 0xFFFFFFFF;
+            for (i = 0; i < 5; i++)
+                code = (code << 8) | control[controlPos++];
+        }
+
+        public override bool CanRead
+        {
+            get { return true; }
+        }
+
+        public override bool CanSeek
+        {
+            get { return false; }
+        }
+
+        public override bool CanWrite
+        {
+            get { return false; }
+        }
+
+        public override void Flush()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override long Length
+        {
+            get { return baseStream.Length + data1.Length + data2.Length; }
+        }
+
+        public override long Position
+        {
+            get
+            {
+                return position;
+            }
+            set
+            {
+                throw new NotImplementedException();
+            }
+        }
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            int size = 0;
+            byte b = 0;
+
+            while (!endReached && size < count)
+            {
+                while (outputOffset < outputCount)
+                {
+                    b = output[outputOffset++];
+                    buffer[offset++] = b;
+                    size++;
+                    position++;
+
+                    prevByte = b;
+                    if (size == count)
+                        return size;
+                }
+
+                if (inputOffset == inputCount)
+                {
+                    inputOffset = 0;
+                    inputCount = baseStream.Read(input, 0, input.Length);
+                    if (inputCount == 0)
+                    {
+                        endReached = true;
+                        break;
+                    }
+                }
+
+                b = input[inputOffset++];
+                buffer[offset++] = b;
+                size++;
+                position++;
+                
+                if (!IsJ(prevByte, b))
+                    prevByte = b;
+                else
+                {
+                    int prob;
+                    if (b == 0xE8)
+                        prob = prevByte;
+                    else if (b == 0xE9)
+                        prob = 256;
+                    else
+                        prob = 257;
+
+                    uint bound = (range >> kNumBitModelTotalBits) * p[prob];
+                    if (code < bound)
+                    {
+                        range = bound;
+                        p[prob] += (ushort)((kBitModelTotal - p[prob]) >> kNumMoveBits);
+                        if (range < kTopValue)
+                        {
+                            range <<= 8;
+                            code = (code << 8) | control[controlPos++];
+                        }
+                        prevByte = b;
+                    }
+                    else
+                    {
+                        range -= bound;
+                        code -= bound;
+                        p[prob] -= (ushort)(p[prob] >> kNumMoveBits);
+                        if (range < kTopValue)
+                        {
+                            range <<= 8;
+                            code = (code << 8) | control[controlPos++];
+                        }
+
+                        uint dest;
+                        if (b == 0xE8)
+                            dest = (uint)((data1[data1Pos++] << 24) | (data1[data1Pos++] << 16) | (data1[data1Pos++] << 8) | data1[data1Pos++]);
+                        else
+                            dest = (uint)((data2[data2Pos++] << 24) | (data2[data2Pos++] << 16) | (data2[data2Pos++] << 8) | data2[data2Pos++]);
+                        dest -= (uint)(position + 4);
+
+                        output[0] = (byte)dest;
+                        output[1] = (byte)(dest >> 8);
+                        output[2] = (byte)(dest >> 16);
+                        output[3] = (byte)(dest >> 24);
+                        outputOffset = 0;
+                        outputCount = 4;
+                    }
+                }
+            }
+
+            return size;
+        }
+
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void SetLength(long value)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Filters/BCJFilter.cs

@@ -0,0 +1,90 @@
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Filters
+{
+    public class BCJFilter : Filter
+    {
+        private static readonly bool[] MASK_TO_ALLOWED_STATUS = new bool[] {true, true, true, false, true, false, false, false};
+        private static readonly int[] MASK_TO_BIT_NUMBER = new int[] { 0, 1, 2, 2, 3, 3, 3, 3 };
+
+        private int pos;
+        private int prevMask = 0;
+
+        public BCJFilter(bool isEncoder, Stream baseStream) : base(isEncoder, baseStream, 5)
+        {
+            pos = 5;
+        }
+
+        private static bool test86MSByte(byte b)
+        {
+            return b == 0x00 || b == 0xFF;
+        }
+
+        protected override int Transform(byte[] buffer, int offset, int count)
+        {
+            int prevPos = offset - 1;
+            int end = offset + count - 5;
+            int i;
+
+            for (i = offset; i <= end; ++i) {
+                if ((buffer[i] & 0xFE) != 0xE8)
+                    continue;
+
+                prevPos = i - prevPos;
+                if ((prevPos & ~3) != 0) { // (unsigned)prevPos > 3
+                    prevMask = 0;
+                } else {
+                    prevMask = (prevMask << (prevPos - 1)) & 7;
+                    if (prevMask != 0) {
+                        if (!MASK_TO_ALLOWED_STATUS[prevMask] || test86MSByte(
+                                buffer[i + 4 - MASK_TO_BIT_NUMBER[prevMask]])) {
+                            prevPos = i;
+                            prevMask = (prevMask << 1) | 1;
+                            continue;
+                        }
+                    }
+                }
+
+                prevPos = i;
+
+                if (test86MSByte(buffer[i + 4])) {
+                    int src = buffer[i + 1]
+                              | (buffer[i + 2] << 8)
+                              | (buffer[i + 3] << 16)
+                              | (buffer[i + 4] << 24);
+                    int dest;
+                    while (true) {
+                        if (isEncoder)
+                            dest = src + (pos + i - offset);
+                        else
+                            dest = src - (pos + i - offset);
+
+                        if (prevMask == 0)
+                            break;
+
+                        int index = MASK_TO_BIT_NUMBER[prevMask] * 8;
+                        if (!test86MSByte((byte)(dest >> (24 - index))))
+                            break;
+
+                        src = dest ^ ((1 << (32 - index)) - 1);
+                    }
+
+                    buffer[i + 1] = (byte)dest;
+                    buffer[i + 2] = (byte)(dest >> 8);
+                    buffer[i + 3] = (byte)(dest >> 16);
+                    buffer[i + 4] = (byte)(~(((dest >> 24) & 1) - 1));
+                    i += 4;
+                } else {
+                    prevMask = (prevMask << 1) | 1;
+                }
+            }
+
+            prevPos = i - prevPos;
+            prevMask = ((prevPos & ~3) != 0) ? 0 : prevMask << (prevPos - 1);
+
+            i -= offset;
+            pos += i;
+            return i;
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Filters/Filter.cs

@@ -0,0 +1,171 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Filters
+{
+    public abstract class Filter : Stream
+    {
+        protected bool isEncoder;
+        protected Stream baseStream;
+
+        private byte[] tail;
+        private byte[] window;
+        private int transformed = 0;
+        private int read = 0;
+        private bool endReached = false;
+        private long position = 0;
+
+        protected Filter(bool isEncoder, Stream baseStream, int lookahead)
+        {
+            this.isEncoder = isEncoder;
+            this.baseStream = baseStream;
+            tail = new byte[lookahead - 1];
+            window = new byte[tail.Length * 2];
+        }
+
+        public Stream BaseStream
+        { get { return baseStream; } }
+
+        public override bool CanRead
+        {
+            get { return !isEncoder; }
+        }
+
+        public override bool CanSeek
+        {
+            get { return false; }
+        }
+
+        public override bool CanWrite
+        {
+            get { return isEncoder; }
+        }
+
+        public override void Flush()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override long Length
+        {
+            get { return baseStream.Length; }
+        }
+
+        public override long Position
+        {
+            get
+            {
+                return position;
+            }
+            set
+            {
+                throw new NotImplementedException();
+            }
+        }
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            int size = 0;
+
+            if (transformed > 0)
+            {
+                int copySize = transformed;
+                if (copySize > count)
+                    copySize = count;
+                Buffer.BlockCopy(tail, 0, buffer, offset, copySize);
+                transformed -= copySize;
+                read -= copySize;
+                offset += copySize;
+                count -= copySize;
+                size += copySize;
+                Buffer.BlockCopy(tail, copySize, tail, 0, read);
+            }
+            if (count == 0)
+            {
+                position += size;
+                return size;
+            }
+
+            int inSize = read;
+            if (inSize > count)
+                inSize = count;
+            Buffer.BlockCopy(tail, 0, buffer, offset, inSize);
+            read -= inSize;
+            Buffer.BlockCopy(tail, inSize, tail, 0, read);
+            while (!endReached && inSize < count)
+            {
+                int baseRead = baseStream.Read(buffer, offset + inSize, count - inSize);
+                inSize += baseRead;
+                if (baseRead == 0)
+                    endReached = true;
+            }
+            while (!endReached && read < tail.Length)
+            {
+                int baseRead = baseStream.Read(tail, read, tail.Length - read);
+                read += baseRead;
+                if (baseRead == 0)
+                    endReached = true;
+            }
+
+            if (inSize > tail.Length)
+            {
+                transformed = Transform(buffer, offset, inSize);
+                offset += transformed;
+                count -= transformed;
+                size += transformed;
+                inSize -= transformed;
+                transformed = 0;
+            }
+
+            if (count == 0)
+            {
+                position += size;
+                return size;
+            }
+
+            Buffer.BlockCopy(buffer, offset, window, 0, inSize);
+            Buffer.BlockCopy(tail, 0, window, inSize, read);
+            if (inSize + read > tail.Length)
+                transformed = Transform(window, 0, inSize + read);
+            else
+                transformed = inSize + read;
+            Buffer.BlockCopy(window, 0, buffer, offset, inSize);
+            Buffer.BlockCopy(window, inSize, tail, 0, read);
+            size += inSize;
+            transformed -= inSize;
+
+            position += size;
+            return size;
+        }
+
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            if (origin != SeekOrigin.Current)
+                throw new NotImplementedException();
+
+            const int bufferSize = 10240;
+            Byte[] seekBuffer = new byte[bufferSize];
+            long seekToGo = offset;
+            while (seekToGo > 0)
+            {
+                long get = seekToGo > bufferSize ? bufferSize : seekToGo;
+                Read(seekBuffer, 0, (int) get);
+                seekToGo -= get;
+            }
+            return position;
+        }
+
+        public override void SetLength(long value)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            Transform(buffer, offset, count);
+            baseStream.Write(buffer, offset, count);
+        }
+
+        protected abstract int Transform(byte[] buffer, int offset, int count);
+    }
+}

ROMVault2/SupportedFiles/SevenZip/LZMACompressFile.cs

@@ -0,0 +1,61 @@
+using System;
+using System.IO;
+using ROMVault2.SupportedFiles.SevenZip.Common;
+using ROMVault2.SupportedFiles.SevenZip.Compress.LZMA;
+
+namespace ROMVault2.SupportedFiles.SevenZip
+{
+    public static class LZMACompressFile
+    {
+        public static void CompressFile(Stream inStream,Stream outStream,out byte[] codeMSbytes,ICodeProgress p)
+        {
+            Int32 dictionary = 1 << 24;
+            Int32 posStateBits = 2;
+            Int32 litContextBits = 3; // for normal files
+            Int32 litPosBits = 0;
+            Int32 algorithm = 2;
+            Int32 numFastBytes = 128; //64;
+
+            string mf = "bt4";
+            bool eos = true;
+
+
+            CoderPropID[] propIDs =
+            {
+                CoderPropID.DictionarySize,
+                CoderPropID.PosStateBits,
+                CoderPropID.LitContextBits,
+                CoderPropID.LitPosBits,
+                CoderPropID.Algorithm,
+                CoderPropID.NumFastBytes,
+                CoderPropID.MatchFinder,
+                CoderPropID.EndMarker
+            };
+
+            object[] properties =
+            {
+                dictionary,
+                posStateBits,
+                litContextBits,
+                litPosBits,
+                algorithm,
+                numFastBytes,
+                mf,
+                eos
+            };
+
+
+
+                Encoder encoder = new Encoder();
+                encoder.SetCoderProperties(propIDs, properties);
+                using (MemoryStream codeMS = new MemoryStream())
+                {
+                    encoder.WriteCoderProperties(codeMS);
+                    codeMSbytes = new byte[codeMS.Length];
+                    codeMS.Position = 0;
+                    codeMS.Read(codeMSbytes, 0, codeMSbytes.Length);
+                }
+                encoder.Code(inStream, outStream, -1, -1, p);
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/SevenZip.cs

@@ -0,0 +1,782 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Security.Cryptography;
+using ROMVault2.SupportedFiles.SevenZip.Common;
+using ROMVault2.SupportedFiles.SevenZip.Compress.LZMA;
+using ROMVault2.SupportedFiles.SevenZip.Filters;
+using ROMVault2.SupportedFiles.SevenZip.Structure;
+
+namespace ROMVault2.SupportedFiles.SevenZip
+{
+    public class SevenZ : ICompress
+    {
+        public class LocalFile
+        {
+            public string FileName;
+            public ulong UncompressedSize;
+            public bool isDirectory;
+            public byte[] crc;
+            public byte[] sha1;
+            public byte[] md5;
+            public int StreamIndex;
+            public ulong StreamOffset;
+            public ZipReturn FileStatus = ZipReturn.ZipUntested;
+        }
+
+        private List<LocalFile> _localFiles = new List<LocalFile>();
+
+        private IO.FileInfo _zipFileInfo;
+
+        private Stream _zipFs;
+
+        private ZipOpenType _zipOpen;
+        private ZipStatus _pZipStatus;
+
+        SignatureHeader _signatureHeader;
+
+        private bool _compressed = true;
+        private Stream _tmpOutStream;
+
+
+
+        private Stream _streamNow;
+        private int _streamIndex = -1;
+
+
+        public string ZipFilename
+        {
+            get { return _zipFileInfo != null ? _zipFileInfo.FullName : ""; }
+        }
+        public long TimeStamp
+        {
+            get { return _zipFileInfo != null ? _zipFileInfo.LastWriteTime : 0; }
+        }
+
+        public ZipOpenType ZipOpen { get { return _zipOpen; } }
+        public ZipStatus ZipStatus { get { return _pZipStatus; } }
+        public int LocalFilesCount() { return _localFiles.Count; }
+        public string Filename(int i) { return _localFiles[i].FileName; }
+        public ulong? LocalHeader(int i) { return 0; }
+        public ulong UncompressedSize(int i) { return _localFiles[i].UncompressedSize; }
+        public ZipReturn FileStatus(int i) { return _localFiles[i].FileStatus; }
+        public byte[] CRC32(int i) { return _localFiles[i].crc; }
+        public byte[] MD5(int i) { return _localFiles[i].md5; }
+        public byte[] SHA1(int i) { return _localFiles[i].sha1; }
+        public bool IsDirectory(int i) { return _localFiles[i].isDirectory; }
+
+
+        private long _baseOffset;
+
+
+        #region open 7z files
+
+        public ZipReturn ZipFileOpen(string filename, long timestamp,bool readHeaders)
+        {
+            Debug.WriteLine(filename);
+            #region open file stream
+            try
+            {
+                if (!IO.File.Exists(filename))
+                {
+                    ZipFileClose();
+                    return ZipReturn.ZipErrorFileNotFound;
+                }
+                _zipFileInfo = new IO.FileInfo(filename);
+                if (timestamp != -1 && _zipFileInfo.LastWriteTime != timestamp)
+                {
+                    ZipFileClose();
+                    return ZipReturn.ZipErrorTimeStamp;
+                }
+                int errorCode = IO.FileStream.OpenFileRead(filename, out _zipFs);
+                if (errorCode != 0)
+                {
+                    ZipFileClose();
+                    return ZipReturn.ZipErrorOpeningFile;
+                }
+            }
+            catch (PathTooLongException)
+            {
+                ZipFileClose();
+                return ZipReturn.ZipFileNameToLong;
+            }
+            catch (IOException)
+            {
+                ZipFileClose();
+                return ZipReturn.ZipErrorOpeningFile;
+            }
+            #endregion
+
+            _zipOpen = ZipOpenType.OpenRead;
+            _pZipStatus = ZipStatus.None;
+
+            SignatureHeader signatureHeader = new SignatureHeader();
+            if (!signatureHeader.Read(new BinaryReader(_zipFs)))
+                return ZipReturn.ZipSignatureError;
+
+            _baseOffset = _zipFs.Position; Util.log("BaseOffset : " + _baseOffset);
+
+            Util.log("Loading Stream : " + (_baseOffset + (long)signatureHeader.NextHeaderOffset) + " , Size : " + signatureHeader.NextHeaderSize);
+
+            //_zipFs.Seek(_baseOffset + (long)signatureHeader.NextHeaderOffset, SeekOrigin.Begin);
+            //byte[] mainHeader = new byte[signatureHeader.NextHeaderSize];
+            //_zipFs.Read(mainHeader, 0, (int)signatureHeader.NextHeaderSize);
+            //if (!CRC.VerifyDigest(signatureHeader.NextHeaderCRC, mainHeader, 0, (uint)signatureHeader.NextHeaderSize))
+            //    return ZipReturn.Zip64EndOfCentralDirError;
+
+            _zipFs.Seek(_baseOffset + (long)signatureHeader.NextHeaderOffset, SeekOrigin.Begin);
+            ZipReturn zr = Header.ReadHeaderOrPackedHeader(_zipFs, _baseOffset, out _header);
+            if (zr != ZipReturn.ZipGood)
+                return zr;
+
+            _zipFs.Seek(_baseOffset + (long)(signatureHeader.NextHeaderOffset + signatureHeader.NextHeaderSize), SeekOrigin.Begin);
+            _pZipStatus = Istorrent7Z() ? ZipStatus.TrrntZip : ZipStatus.None;
+            PopulateLocalFiles(out _localFiles);
+
+            return ZipReturn.ZipGood;
+        }
+
+
+        private void PopulateLocalFiles(out List<LocalFile> localFiles)
+        {
+            int emptyFileIndex = 0;
+            int folderIndex = 0;
+            int unpackedStreamsIndex = 0;
+            ulong streamOffset = 0;
+            localFiles = new List<LocalFile>();
+
+            for (int i = 0; i < _header.FileInfo.Names.Length; i++)
+            {
+                LocalFile lf = new LocalFile { FileName = _header.FileInfo.Names[i] };
+
+                if (_header.FileInfo.EmptyStreamFlags == null || !_header.FileInfo.EmptyStreamFlags[i])
+                {
+                    lf.StreamIndex = folderIndex;
+                    lf.StreamOffset = streamOffset;
+                    lf.UncompressedSize = _header.StreamsInfo.Folders[folderIndex].UnpackedStreamInfo[unpackedStreamsIndex].UnpackedSize;
+                    lf.crc = Util.uinttobytes(_header.StreamsInfo.Folders[folderIndex].UnpackedStreamInfo[unpackedStreamsIndex].Crc);
+
+                    streamOffset += lf.UncompressedSize;
+                    unpackedStreamsIndex++;
+
+                    if (unpackedStreamsIndex >= _header.StreamsInfo.Folders[folderIndex].UnpackedStreamInfo.Length)
+                    {
+                        folderIndex++;
+                        unpackedStreamsIndex = 0;
+                        streamOffset = 0;
+                    }
+                }
+                else
+                {
+                    lf.UncompressedSize = 0;
+                    lf.crc = new byte[] { 0, 0, 0, 0 };
+                    lf.isDirectory = _header.FileInfo.EmptyFileFlags == null || !_header.FileInfo.EmptyFileFlags[emptyFileIndex++];
+
+                    if (lf.isDirectory)
+                        if (lf.FileName.Substring(lf.FileName.Length - 1, 1) != "/")
+                            lf.FileName += "/";
+                }
+
+                localFiles.Add(lf);
+            }
+        }
+
+        public void ZipFileClose()
+        {
+            ZipFileClose(null);
+        }
+
+        public void ZipFileClose(ICodeProgress p)
+        {
+            if (_zipOpen == ZipOpenType.Closed)
+                return;
+
+            if (_zipOpen == ZipOpenType.OpenRead)
+            {
+                ZipFileCloseReadStream();
+                if (_zipFs != null)
+                {
+                    _zipFs.Close();
+                    _zipFs.Dispose();
+                }
+                _zipOpen = ZipOpenType.Closed;
+                return;
+            }
+
+            CloseWriting7Zip(p);
+
+            _zipFileInfo = new IO.FileInfo(_zipFileInfo.FullName);
+            _zipOpen = ZipOpenType.Closed;
+        }
+
+        private Header _header;
+
+
+
+        private bool Istorrent7Z()
+        {
+            const int crcsz = 128;
+            const int t7ZsigSize = 16 + 1 + 9 + 4 + 4;
+            byte[] kSignature = { (byte)'7', (byte)'z', 0xBC, 0xAF, 0x27, 0x1C };
+            int kSignatureSize = kSignature.Length;
+            const string sig = "\xa9\x9f\xd1\x57\x08\xa9\xd7\xea\x29\x64\xb2\x36\x1b\x83\x52\x33\x01torrent7z_0.9beta";
+            byte[] t7Zid = Util.Enc.GetBytes(sig);
+            int t7ZidSize = t7Zid.Length;
+
+            const int tmpbufsize = 256 + t7ZsigSize + 8 + 4;
+            byte[] buffer = new byte[tmpbufsize];
+
+            // read fist 128 bytes, pad with zeros if less bytes
+            int offs = 0;
+            _zipFs.Seek(0, SeekOrigin.Begin);
+            int ar = _zipFs.Read(buffer, offs, crcsz);
+            if (ar < crcsz)
+                Util.memset(buffer, offs + ar, 0, crcsz - ar);
+
+
+            offs = crcsz;
+            long foffs = _zipFs.Length;
+            foffs = foffs < (crcsz + t7ZsigSize + 4) ? 0 : foffs - (crcsz + t7ZsigSize + 4);
+            _zipFs.Seek(foffs, SeekOrigin.Begin);
+
+            ar = _zipFs.Read(buffer, offs, (crcsz + t7ZsigSize + 4));
+            if (ar < (crcsz + t7ZsigSize + 4))
+            {
+                if (ar >= t7ZsigSize + 4)
+                {
+                    ar -= t7ZsigSize + 4;
+                }
+                if (ar < kSignatureSize)
+                {
+                    ar = kSignatureSize;
+                }
+                Util.memset(buffer, offs + ar, 0, crcsz - ar);
+                Util.memcpyr(buffer, crcsz * 2 + 8, buffer, offs + ar, t7ZsigSize + 4);
+            }
+            else
+                Util.memcpyr(buffer, crcsz * 2 + 8, buffer, crcsz * 2, t7ZsigSize + 4);
+
+            foffs = _zipFs.Length;
+            foffs -= t7ZsigSize + 4;
+
+            //memcpy(buffer, crcsz * 2, &foffs, 8);
+            buffer[crcsz * 2 + 0] = (byte)((foffs >> 0) & 0xff);
+            buffer[crcsz * 2 + 1] = (byte)((foffs >> 8) & 0xff);
+            buffer[crcsz * 2 + 2] = (byte)((foffs >> 16) & 0xff);
+            buffer[crcsz * 2 + 3] = (byte)((foffs >> 24) & 0xff);
+            buffer[crcsz * 2 + 4] = 0;
+            buffer[crcsz * 2 + 5] = 0;
+            buffer[crcsz * 2 + 6] = 0;
+            buffer[crcsz * 2 + 7] = 0;
+
+            if (Util.memcmp(buffer, 0, kSignature, kSignatureSize))
+            {
+                t7Zid[16] = buffer[crcsz * 2 + 4 + 8 + 16];
+                if (Util.memcmp(buffer, crcsz * 2 + 4 + 8, t7Zid, t7ZidSize))
+                {
+                    UInt32 inCrc32 = (UInt32)((buffer[crcsz * 2 + 8 + 0]) +
+                                             (buffer[crcsz * 2 + 8 + 1] << 8) +
+                                             (buffer[crcsz * 2 + 8 + 2] << 16) +
+                                             (buffer[crcsz * 2 + 8 + 3] << 24));
+
+                    buffer[crcsz * 2 + 8 + 0] = 0xff;
+                    buffer[crcsz * 2 + 8 + 1] = 0xff;
+                    buffer[crcsz * 2 + 8 + 2] = 0xff;
+                    buffer[crcsz * 2 + 8 + 3] = 0xff;
+
+                    uint calcCrc32 = CRC.CalculateDigest(buffer, 0, crcsz * 2 + 8 + t7ZsigSize + 4);
+
+                    if (inCrc32 == calcCrc32) return true;
+                }
+            }
+
+            return false;
+        }
+
+
+
+        #endregion
+
+
+        public void DeepScan()
+        {
+            const int bufferSize = 4096 * 128;
+            byte[] buffer = new byte[bufferSize];
+
+            for (int index = 0; index < _localFiles.Count; index++)
+            {
+                if (_localFiles[index].isDirectory || _localFiles[index].UncompressedSize == 0)
+                {
+                    _localFiles[index].md5 = new byte[] { 0xd4, 0x1d, 0x8c, 0xd9, 0x8f, 0x00, 0xb2, 0x04, 0xe9, 0x80, 0x09, 0x98, 0xec, 0xf8, 0x42, 0x7e };
+                    _localFiles[index].sha1 = new byte[] { 0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, 0x07, 0x09 };
+                    _localFiles[index].FileStatus = ZipReturn.ZipGood;
+
+                    continue;
+                }
+
+                ulong sizetogo;
+                Stream inStream;
+                ZipReturn zr = ZipFileOpenReadStream(index, out inStream, out sizetogo);
+                if (zr != ZipReturn.ZipGood)
+                    continue;
+
+                if (inStream == null)
+                    continue;
+
+                CRC crc32 = new CRC();
+                MD5 lmd5 = System.Security.Cryptography.MD5.Create();
+                SHA1 lsha1 = System.Security.Cryptography.SHA1.Create();
+
+                while (sizetogo > 0)
+                {
+                    int sizenow = sizetogo > (ulong)bufferSize ? bufferSize : (int)sizetogo;
+                    inStream.Read(buffer, 0, sizenow);
+
+                    crc32.Update(buffer, 0, (uint)sizenow);
+                    lmd5.TransformBlock(buffer, 0, sizenow, null, 0);
+                    lsha1.TransformBlock(buffer, 0, sizenow, null, 0);
+
+                    sizetogo = sizetogo - (ulong)sizenow;
+                }
+
+                lmd5.TransformFinalBlock(buffer, 0, 0);
+                lsha1.TransformFinalBlock(buffer, 0, 0);
+
+                byte[] testcrc = Util.uinttobytes(crc32.GetDigest());
+                _localFiles[index].md5 = lmd5.Hash;
+                _localFiles[index].sha1 = lsha1.Hash;
+
+                _localFiles[index].FileStatus = Util.ByteArrCompare(_localFiles[index].crc, testcrc) ? ZipReturn.ZipGood : ZipReturn.ZipCRCDecodeError;
+            }
+        }
+
+
+
+        #region read 7z file
+
+        public ZipReturn ZipFileOpenReadStream(int index, out Stream stream, out ulong unCompressedSize)
+        {
+            Debug.WriteLine("Opening File " + _localFiles[index].FileName);
+            stream = null;
+            unCompressedSize = 0;
+
+            if (_zipOpen != ZipOpenType.OpenRead)
+                return ZipReturn.ZipErrorGettingDataStream;
+
+            if (IsDirectory(index))
+                return ZipReturn.ZipTryingToAccessADirectory;
+
+            unCompressedSize = _localFiles[index].UncompressedSize;
+
+            int thisStreamIndex = _localFiles[index].StreamIndex;
+
+            // first see if we can re-use the current open stream
+            if (_streamIndex == thisStreamIndex)
+            {
+                stream = _streamNow;
+                if (_streamNow is BCJFilter) // it is a BCJ + Decoder stream but need to check the position in the stream can be used.
+                {
+                    if ((long)_localFiles[index].StreamOffset >= _streamNow.Position)
+                    {
+                        stream.Seek((long)_localFiles[index].StreamOffset - _streamNow.Position, SeekOrigin.Current);
+                        return ZipReturn.ZipGood;
+                    }
+                }
+                else if (_streamNow is Decoder) // it is a Decoder stream but need to check the position in the stream can be used.
+                {
+                    if ((long)_localFiles[index].StreamOffset >= _streamNow.Position)
+                    {
+                        stream.Seek((long)_localFiles[index].StreamOffset - _streamNow.Position, SeekOrigin.Current);
+                        return ZipReturn.ZipGood;
+                    }
+                }
+                else // it is an uncompressed stream
+                {
+                    if (stream != null)
+                        stream.Seek((long)_localFiles[index].StreamOffset - _streamNow.Position, SeekOrigin.Current);
+                    return ZipReturn.ZipGood;
+                }
+            }
+
+            // need to open a new stream
+
+            // first close the old streams
+            ZipFileCloseReadStream();
+
+
+            // open new stream
+            _streamIndex = thisStreamIndex;
+            _zipFs.Seek(_baseOffset + (long)_header.StreamsInfo.PackedStreams[thisStreamIndex].StreamPosition, SeekOrigin.Begin);
+
+            byte[] method = _header.StreamsInfo.Folders[_localFiles[index].StreamIndex].Coders[0].Method;
+            if (method.Length == 3 && method[0] == 3 && method[1] == 1 && method[2] == 1)  // LZMA
+            {
+                Decoder decoder = new Decoder();
+                decoder.SetDecoderProperties(_header.StreamsInfo.Folders[_localFiles[index].StreamIndex].Coders[0].Properties);
+                decoder.SetUpStream(_zipFs);
+                stream = decoder;
+                _streamNow = stream;
+
+                if (_header.StreamsInfo.Folders[_localFiles[index].StreamIndex].Coders.Length > 1)  // BCJ
+                {
+                    method = _header.StreamsInfo.Folders[_localFiles[index].StreamIndex].Coders[1].Method;
+                    if (method.Length == 4 && method[0] == 3 && method[1] == 3 && method[2] == 1 && method[3] == 3)
+                    {
+                        BCJFilter filter = new BCJFilter(false, stream);
+                        stream = filter;
+                        _streamNow = stream;
+                        stream.Seek((long)_localFiles[index].StreamOffset, SeekOrigin.Current);
+                        return ZipReturn.ZipGood;
+                    }
+                    return ZipReturn.ZipUnsupportedCompression;
+                }
+
+                stream.Seek((long)_localFiles[index].StreamOffset, SeekOrigin.Current);
+                return ZipReturn.ZipGood;
+            }
+            if (method.Length == 1 && method[0] == 33) // lzma2
+            {
+                return ZipReturn.ZipUnsupportedCompression;
+            }
+
+            if (method.Length == 1 && method[0] == 0) // uncompressed
+            {
+                stream = _zipFs;
+                _streamNow = stream;
+                stream.Seek((long)_localFiles[index].StreamOffset, SeekOrigin.Current);
+                return ZipReturn.ZipGood;
+            }
+
+            if (method.Length == 3 && method[0] == 4 && method[1] == 2 && method[2] == 2) // BZip2
+            {
+                return ZipReturn.ZipUnsupportedCompression;
+            }
+            if (method.Length == 1 && method[0] == 33)  // LZMA2
+            {
+                return ZipReturn.ZipUnsupportedCompression;
+            }
+
+            return ZipReturn.ZipUnsupportedCompression;
+        }
+
+
+        public ZipReturn ZipFileCloseReadStream()
+        {
+            if (_streamNow is BCJFilter)
+            {
+                Stream baseStream = ((BCJFilter)_streamNow).BaseStream;
+                _streamNow.Dispose();
+                _streamNow = baseStream;
+            }
+            if (_streamNow is Decoder)
+            {
+                _streamNow.Close();
+                _streamNow.Dispose();
+            }
+            _streamNow = null;
+            return ZipReturn.ZipGood;
+        }
+
+        #endregion
+
+
+        #region write 7z File
+
+        public void ZipFileAddDirectory()
+        {
+            // do nothing here for 7zip
+        }
+
+        public ZipReturn ZipFileCreate(string newFilename)
+        {
+            return ZipFileCreate(newFilename, true);
+        }
+
+
+        public ZipReturn ZipFileCreate(string newFilename, bool compressOutput)
+        {
+            if (_zipOpen != ZipOpenType.Closed)
+                return ZipReturn.ZipFileAlreadyOpen;
+
+            DirUtil.CreateDirForFile(newFilename);
+            _zipFileInfo = new IO.FileInfo(newFilename);
+
+            int errorCode = IO.FileStream.OpenFileWrite(newFilename, out _zipFs);
+            if (errorCode != 0)
+            {
+                ZipFileClose();
+                return ZipReturn.ZipErrorOpeningFile;
+            }
+            _zipOpen = ZipOpenType.OpenWrite;
+
+            _signatureHeader = new SignatureHeader();
+            _header = new Header();
+
+            BinaryWriter bw = new BinaryWriter(_zipFs);
+            _signatureHeader.Write(bw);
+
+            _compressed = compressOutput;
+            _tmpOutStream = compressOutput ? new FileStream(_zipFileInfo.FullName + ".tmp", FileMode.Create, FileAccess.Write) : null;
+
+            return ZipReturn.ZipGood;
+        }
+
+        public ZipReturn ZipFileOpenWriteStream(bool raw, bool trrntzip, string filename, ulong uncompressedSize, ushort compressionMethod, out Stream stream)
+        {
+            return ZipFileOpenWriteStream(filename, uncompressedSize, out stream);
+        }
+        public ZipReturn ZipFileOpenWriteStream(string filename, ulong uncompressedSize, out Stream stream)
+        {
+            LocalFile lf = new LocalFile
+            {
+                FileName = filename,
+                UncompressedSize = uncompressedSize,
+                StreamOffset = (ulong)(_zipFs.Position - _signatureHeader.BaseOffset)
+            };
+
+            _localFiles.Add(lf);
+            stream = _tmpOutStream ?? _zipFs;
+            return ZipReturn.ZipGood;
+        }
+
+
+        public ZipReturn ZipFileCloseWriteStream(byte[] crc32)
+        {
+            _localFiles[_localFiles.Count - 1].crc = new[] { crc32[3], crc32[2], crc32[1], crc32[0] };
+            return ZipReturn.ZipGood;
+        }
+
+        private void Create7ZStructure()
+        {
+            int fileCount = _localFiles.Count;
+
+            //FileInfo
+            _header.FileInfo = new Structure.FileInfo
+            {
+                Names = new string[fileCount]
+            };
+
+            ulong emptyStreamCount = 0;
+            ulong emptyFileCount = 0;
+            for (int i = 0; i < fileCount; i++)
+            {
+                _header.FileInfo.Names[i] = _localFiles[i].FileName;
+
+                if (_localFiles[i].UncompressedSize != 0)
+                    continue;
+
+                if (!_localFiles[i].isDirectory)
+                    emptyFileCount += 1;
+
+                emptyStreamCount += 1;
+            }
+            ulong outFileCount = (ulong)_localFiles.Count - emptyStreamCount;
+
+            _header.FileInfo.EmptyStreamFlags = null;
+            _header.FileInfo.EmptyFileFlags = null;
+            _header.FileInfo.Attributes = null;
+
+            if (emptyStreamCount > 0)
+            {
+                if (emptyStreamCount != emptyFileCount) //then we found directories and need to set the attributes
+                    _header.FileInfo.Attributes = new uint[fileCount];
+
+                if (emptyFileCount > 0)
+                    _header.FileInfo.EmptyFileFlags = new bool[emptyStreamCount];
+
+                emptyStreamCount = 0;
+                _header.FileInfo.EmptyStreamFlags = new bool[fileCount];
+                for (int i = 0; i < fileCount; i++)
+                {
+                    if (_localFiles[i].UncompressedSize != 0)
+                        continue;
+
+                    if (_localFiles[i].isDirectory)
+                        _header.FileInfo.Attributes[i] = 0x10;                      // set attributes to directory
+                    else
+                        _header.FileInfo.EmptyFileFlags[emptyStreamCount] = true;   // set empty file flag
+
+                    _header.FileInfo.EmptyStreamFlags[i] = true;
+                    emptyStreamCount += 1;
+                }
+            }
+
+
+
+            //StreamsInfo
+            _header.StreamsInfo = new StreamsInfo { PackPosition = 0 };
+
+            //StreamsInfo.PackedStreamsInfo
+            if (_compressed)
+            {
+                _header.StreamsInfo.PackedStreams = new PackedStreamInfo[1];
+                _header.StreamsInfo.PackedStreams[0] = new PackedStreamInfo { PackedSize = _packStreamSize };
+            }
+            else
+            {
+                _header.StreamsInfo.PackedStreams = new PackedStreamInfo[outFileCount];
+                int fileIndex = 0;
+                for (int i = 0; i < fileCount; i++)
+                {
+                    if (_localFiles[i].UncompressedSize == 0)
+                        continue;
+                    _header.StreamsInfo.PackedStreams[fileIndex++] = new PackedStreamInfo { PackedSize = _localFiles[i].UncompressedSize };
+                }
+            }
+            //StreamsInfo.PackedStreamsInfo, no CRC or StreamPosition required
+
+            if (_compressed)
+            {
+                //StreamsInfo.Folders
+                _header.StreamsInfo.Folders = new Folder[1];
+
+                Folder folder = new Folder { Coders = new Coder[1] };
+
+                //StreamsInfo.Folders.Coder
+                // flags 0x23
+                folder.Coders[0] = new Coder
+                {
+                    Method = new byte[] { 3, 1, 1 },
+                    NumInStreams = 1,
+                    NumOutStreams = 1,
+                    Properties = _codeMSbytes
+                };
+                folder.BindPairs = null;
+                folder.PackedStreamIndices = new[] { (ulong)0 };
+                folder.UnpackedStreamSizes = new[] { _unpackedStreamSize };
+                folder.UnpackCRC = null;
+
+                folder.UnpackedStreamInfo = new UnpackedStreamInfo[outFileCount];
+                int fileIndex = 0;
+                for (int i = 0; i < fileCount; i++)
+                {
+                    if (_localFiles[i].UncompressedSize == 0)
+                        continue;
+                    UnpackedStreamInfo unpackedStreamInfo = new UnpackedStreamInfo
+                    {
+                        UnpackedSize = _localFiles[i].UncompressedSize,
+                        Crc = Util.bytestouint(_localFiles[i].crc)
+                    };
+                    folder.UnpackedStreamInfo[fileIndex++] = unpackedStreamInfo;
+                }
+                _header.StreamsInfo.Folders[0] = folder;
+            }
+            else
+            {
+                _header.StreamsInfo.Folders = new Folder[outFileCount];
+                int fileIndex = 0;
+                for (int i = 0; i < fileCount; i++)
+                {
+                    if (_localFiles[i].UncompressedSize == 0)
+                        continue;
+                    Folder folder = new Folder { Coders = new Coder[1] };
+
+                    //StreamsInfo.Folders.Coder
+                    // flags 0x01
+                    folder.Coders[0] = new Coder
+                    {
+                        Method = new byte[] { 0 },
+                        NumInStreams = 1,
+                        NumOutStreams = 1,
+                        Properties = null
+                    };
+
+                    folder.BindPairs = null;
+                    folder.PackedStreamIndices = new[] { (ulong)i };
+                    folder.UnpackedStreamSizes = new[] { _localFiles[i].UncompressedSize };
+                    folder.UnpackCRC = null;
+
+                    folder.UnpackedStreamInfo = new UnpackedStreamInfo[1];
+                    UnpackedStreamInfo unpackedStreamInfo = new UnpackedStreamInfo
+                    {
+                        UnpackedSize = _localFiles[i].UncompressedSize,
+                        Crc = Util.bytestouint(_localFiles[i].crc)
+                    };
+                    folder.UnpackedStreamInfo[0] = unpackedStreamInfo;
+
+                    _header.StreamsInfo.Folders[fileIndex++] = folder;
+                }
+            }
+        }
+
+        ulong _packStreamSize;
+        ulong _unpackedStreamSize;
+        byte[] _codeMSbytes;
+
+        private void CloseWriting7Zip(ICodeProgress p = null)
+        {
+            if (_compressed)
+            {
+                _unpackedStreamSize = (ulong)_tmpOutStream.Length;
+                _tmpOutStream.Close();
+                _tmpOutStream.Dispose();
+
+                UInt64 packStreamStart = (UInt64)_zipFs.Position;
+                using (Stream inStream = new FileStream(_zipFileInfo.FullName + ".tmp", FileMode.Open, FileAccess.Read))
+                {
+                    LZMACompressFile.CompressFile(inStream, _zipFs, out _codeMSbytes, p);
+                }
+                _packStreamSize = (UInt64)_zipFs.Position - packStreamStart;
+
+                File.Delete(_zipFileInfo.FullName + ".tmp");
+            }
+
+            Create7ZStructure();
+
+            byte[] newHeaderByte;
+            using (Stream headerMem = new MemoryStream())
+            {
+                using (BinaryWriter headerBw = new BinaryWriter(headerMem))
+                {
+                    _header.WriteHeader(headerBw);
+                    newHeaderByte = new byte[headerMem.Length];
+                    headerMem.Position = 0;
+                    headerMem.Read(newHeaderByte, 0, newHeaderByte.Length);
+                }
+            }
+
+            CRC mainHeadercrc = new CRC();
+            mainHeadercrc.Update(newHeaderByte, 0, (uint)newHeaderByte.Length);
+            UInt32 mainHeaderCRC = mainHeadercrc.GetDigest();
+
+            UInt64 headerpos = (UInt64)_zipFs.Position;
+            BinaryWriter bw = new BinaryWriter(_zipFs);
+            bw.Write(newHeaderByte);
+
+            _signatureHeader.WriteFinal(bw, headerpos, (ulong)newHeaderByte.Length, mainHeaderCRC);
+
+            _zipFs.Flush();
+            _zipFs.Close();
+            _zipFs.Dispose();
+        }
+
+        #endregion
+
+
+        public void ZipFileAddDirectory(string filename)
+        {
+            LocalFile lf = new LocalFile
+            {
+                FileName = filename,
+                UncompressedSize = 0,
+                isDirectory = true,
+                StreamOffset = 0
+            };
+            _localFiles.Add(lf);
+        }
+
+        public ZipReturn ZipFileRollBack()
+        {
+            throw new NotImplementedException();
+        }
+
+        public void ZipFileCloseFailed()
+        {
+            throw new NotImplementedException();
+        }
+
+
+
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/BindPair.cs

@@ -0,0 +1,24 @@
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class BindPair
+    {
+        public ulong InIndex;
+        public ulong OutIndex;
+
+        public void Read(BinaryReader br)
+        {
+            InIndex = br.ReadEncodedUInt64();
+            Util.log("InIndex = " + InIndex);
+            OutIndex = br.ReadEncodedUInt64();
+            Util.log("OutIndex = " + OutIndex);
+        }
+
+        public void Write(BinaryWriter bw)
+        {
+            bw.WriteEncodedUInt64(InIndex);
+            bw.WriteEncodedUInt64(OutIndex);
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/Coder.cs

@@ -0,0 +1,70 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class Coder
+    {
+        public byte[] Method;
+        public ulong NumInStreams;
+        public ulong NumOutStreams;
+        public byte[] Properties;
+
+        public void Read(BinaryReader br)
+        {
+            Util.log("Begin : ReadCoder", 1);
+
+            byte flags = br.ReadByte();
+            Util.log("Flags = " + flags.ToString("X"));
+            int decompressionMethodIdSize = flags & 0xf;
+            Method = br.ReadBytes(decompressionMethodIdSize);
+            if ((flags & 0x10) != 0)
+            {
+                NumInStreams = br.ReadEncodedUInt64();
+                Util.log("NumInStreams = " + NumInStreams);
+                NumOutStreams = br.ReadEncodedUInt64();
+                Util.log("NumOutStreams = " + NumOutStreams);
+            }
+            else
+            {
+                NumInStreams = 1;
+                NumOutStreams = 1;
+            }
+            if ((flags & 0x20) != 0)
+            {
+                ulong propSize = br.ReadEncodedUInt64();
+                Util.log("PropertiesSize = " + propSize);
+                Properties = br.ReadBytes((int)propSize);
+                Util.log("Properties = " + Properties);
+            }
+            if ((flags & 0x80) != 0)
+                throw new NotSupportedException("External flag");
+
+            Util.log("End : ReadCoder", -1);
+        }
+
+        public void Write(BinaryWriter bw)
+        {
+            byte flags = (byte)Method.Length;
+            if (NumInStreams != 1 || NumOutStreams != 1)
+                flags = (byte)(flags | 0x10);
+            if (Properties != null && Properties.Length > 0)
+                flags = (byte)(flags | 0x20);
+            bw.Write(flags);
+            
+            bw.Write(Method);
+            
+            if (NumInStreams != 1 || NumOutStreams != 1)
+            {
+                bw.WriteEncodedUInt64(NumInStreams);
+                bw.WriteEncodedUInt64(NumOutStreams);
+            }
+            
+            if (Properties != null && Properties.Length > 0)
+            {
+                bw.WriteEncodedUInt64((ulong) Properties.Length);
+                bw.Write(Properties);
+            }
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/FileInfo.cs

@@ -0,0 +1,128 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class FileInfo
+    {
+        public string[] Names;
+        public bool[] EmptyStreamFlags;
+        public bool[] EmptyFileFlags;
+        public uint[] Attributes;
+
+        public void Read(BinaryReader br)
+        {
+            Util.log("Begin : ReadFileInfo", 1);
+
+            ulong size = br.ReadEncodedUInt64();
+            Names = new string[size];
+
+            ulong numEmptyFiles = 0;
+
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                if (hp == HeaderProperty.kEnd)
+                {
+                    Util.log("End : ReadFileInfo", -1);
+                    return;
+                }
+
+                ulong bytessize = br.ReadEncodedUInt64();
+                switch (hp)
+                {
+                    case HeaderProperty.kName:
+                        if (br.ReadByte() != 0)
+                            throw new Exception("Cannot be external");
+
+                        Util.log("Looping Names Begin " + size, 1);
+                        for (ulong i = 0; i < size; i++)
+                        {
+                            Names[i] = br.ReadName();
+                            Util.log("enteries[" + i + "]=" + Names[i]);
+                        }
+                        Util.log("Looping Names End " + size, -1);
+                        continue;
+
+                    case HeaderProperty.kEmptyStream:
+                        Util.log("reading EmptyStreamFlags Total=" + size);
+                        EmptyStreamFlags = Util.ReadBoolFlags(br, (ulong)Names.Length);
+                        for (ulong i = 0; i < size; i++)
+                            if (EmptyStreamFlags[i]) numEmptyFiles++;
+                        continue;
+
+                    case HeaderProperty.kEmptyFile:
+                        Util.log("reading numEmptyFilesFlags Total=" + numEmptyFiles);
+                        EmptyFileFlags = Util.ReadBoolFlags(br, numEmptyFiles);
+                        continue;
+
+                    case HeaderProperty.kWinAttributes:
+                        Util.log("skipping bytes " + bytessize);
+                        Attributes = Util.ReadUInt32Def(br, size);
+                        continue;
+
+                    case HeaderProperty.kLastWriteTime:
+                        Util.log("skipping bytes " + bytessize);
+                        br.ReadBytes((int)bytessize);
+                        continue;
+
+                    case HeaderProperty.kDummy:
+                        Util.log("skipping bytes " + bytessize);
+                        br.ReadBytes((int)bytessize);
+                        continue;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+            }
+        }
+
+        public void Write(BinaryWriter bw)
+        {
+            bw.Write((byte)HeaderProperty.kFilesInfo);
+            bw.WriteEncodedUInt64((UInt64)Names.Length);
+
+
+            byte[] namebyte;
+            using (MemoryStream nameMem = new MemoryStream())
+            {
+                using (BinaryWriter nameBw = new BinaryWriter(nameMem))
+                {
+                    nameBw.Write((byte)0); //not external
+                    foreach (string name in Names)
+                        nameBw.WriteName(name);
+
+                    namebyte = new byte[nameMem.Length];
+                    nameMem.Position = 0;
+                    nameMem.Read(namebyte, 0, namebyte.Length);
+                }
+            }
+
+            bw.Write((byte)HeaderProperty.kName);
+            bw.WriteEncodedUInt64((UInt64)namebyte.Length);
+            bw.Write(namebyte);
+
+            if (EmptyStreamFlags != null)
+            {
+
+                bw.Write((byte)HeaderProperty.kEmptyStream);
+                Util.WriteBoolFlags(bw, EmptyStreamFlags);
+            }
+
+            if (EmptyFileFlags != null)
+            {
+                bw.Write((byte)HeaderProperty.kEmptyFile);
+                Util.WriteBoolFlags(bw, EmptyFileFlags);
+            }
+
+            if (Attributes != null)
+            {
+                bw.Write((byte)HeaderProperty.kWinAttributes);
+                Util.WriteUint32Def(bw, Attributes);
+            }
+
+            bw.Write((byte)HeaderProperty.kEnd);
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/Folder.cs

@@ -0,0 +1,395 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class Folder
+    {
+        
+
+        public Coder[] Coders;
+        public BindPair[] BindPairs;
+        public ulong[] PackedStreamIndices;
+        public ulong[] UnpackedStreamSizes;
+        public uint? UnpackCRC;
+        public UnpackedStreamInfo[] UnpackedStreamInfo;
+
+
+
+        private void ReadFolder(BinaryReader br)
+        {
+            Util.log("Begin : Read Folder", 1);
+
+            ulong numCoders = br.ReadEncodedUInt64();
+            Util.log("NumCoders = " + numCoders);
+
+            Coders = new Coder[numCoders];
+
+            int numInStreams = 0;
+            int numOutStreams = 0;
+
+            Util.log("Looping Coders Begin", 1);
+            for (ulong i = 0; i < numCoders; i++)
+            {
+                Util.log("Looping Coders : " + i);
+                Coders[i] = new Coder();
+                Coders[i].Read(br);
+
+                numInStreams += (int)Coders[i].NumInStreams;
+                numOutStreams += (int)Coders[i].NumOutStreams;
+            }
+            Util.log("Looping Coders End", -1);
+
+            int numBindPairs = numOutStreams - 1;
+            Util.log("numBindPairs : " + numBindPairs);
+            BindPairs = new BindPair[numBindPairs];
+
+            Util.log("Looping BindPairs Begin", 1);
+            for (int i = 0; i < numBindPairs; i++)
+            {
+                Util.log("Looping BindPairs : " + i);
+                BindPairs[i] = new BindPair();
+                BindPairs[i].Read(br);
+            }
+            Util.log("Looping BindPairs End", -1);
+
+            if (numInStreams < numBindPairs)
+                throw new NotSupportedException("Error");
+
+            int numPackedStreams = numInStreams - numBindPairs;
+            Util.log("numPackedStreams : " + numPackedStreams);
+
+            PackedStreamIndices = new ulong[numPackedStreams];
+
+            if (numPackedStreams == 1)
+            {
+                uint pi = 0;
+                for (uint j = 0; j < numInStreams; j++)
+                {
+                    for (uint k = 0; k < BindPairs.Length; k++)
+                    {
+                        if (BindPairs[k].InIndex == j) continue;
+                        Util.log("PackedStreamIndices[" + pi + "] : " + j);
+                        PackedStreamIndices[pi++] = j;
+                        break;
+                    }
+                }
+            }
+            else
+            {
+                for (uint i = 0; i < numPackedStreams; i++)
+                {
+                    PackedStreamIndices[i] = br.ReadEncodedUInt64();
+                    Util.log("PackedStreamIndices[" + i + "] = " + PackedStreamIndices[i]);
+                }
+            }
+
+            Util.log("End : Read Folder", -1);
+        }
+        private void ReadUnpackedStreamSize(BinaryReader br)
+        {
+            ulong outStreams = 0;
+            foreach (Coder c in Coders)
+                outStreams += c.NumOutStreams;
+
+            Util.log("Looping UnpackedStreamSizes Begin", 1);
+            UnpackedStreamSizes = new ulong[outStreams];
+            for (uint j = 0; j < outStreams; j++)
+            {
+                UnpackedStreamSizes[j] = br.ReadEncodedUInt64();
+                Util.log("unpackedStreamSizes[" + j + "] = " + UnpackedStreamSizes[j]);
+            }
+            Util.log("Looping UnpackedStreamSizes End", -1);
+        }
+        private ulong GetUnpackSize()
+        {
+            ulong outStreams = 0;
+            foreach (Coder coder in Coders)
+                outStreams += coder.NumInStreams;
+
+            for (ulong j = 0; j < outStreams; j++)
+            {
+                bool found = false;
+                foreach (BindPair bindPair in BindPairs)
+                {
+                    if (bindPair.OutIndex != j)
+                        continue;
+                    found = true;
+                    break;
+                }
+                if (!found) return UnpackedStreamSizes[j];
+
+            }
+            return 0;
+        }
+
+        
+        public static void ReadUnPackInfo(BinaryReader br,out Folder[] Folders)
+        {
+            Folders = null;
+            Util.log("Begin : ReadUnPackInfo", 1);
+
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                switch (hp)
+                {
+                    case HeaderProperty.kFolder:
+                        {
+                            ulong numFolders = br.ReadEncodedUInt64();
+                            Util.log("NumFolders = " + numFolders);
+
+                            Folders = new Folder[numFolders];
+
+                            byte external = br.ReadByte();
+                            Util.log("External = " + external);
+                            switch (external)
+                            {
+                                case 0:
+                                    {
+                                        Util.log("Looping Folders Begin", 1);
+                                        for (uint i = 0; i < numFolders; i++)
+                                        {
+                                            Util.log("Looping Folders : " + i);
+                                            Folders[i] = new Folder();
+                                            Folders[i].ReadFolder(br);
+                                        }
+                                        Util.log("Looping Folders End", -1);
+                                        break;
+                                    }
+                                case 1:
+                                    throw new NotSupportedException("External flag");
+                            }
+                            continue;
+                        }
+
+
+                    case HeaderProperty.kCodersUnPackSize:
+                        {
+                            Util.log("Looping Folders Begin", 1);
+                            for (uint i = 0; i < Folders.Length; i++)
+                            {
+                                Util.log("Looping Folders : " + i);
+                                Folders[i].ReadUnpackedStreamSize(br);
+                            }
+                            Util.log("Looping Folders End", -1);
+                            continue;
+                        }
+
+                    case HeaderProperty.kCRC:
+                        {
+
+                            uint?[] crcs;
+                            Util.log("Looping CRC Begin", 1);
+                            Util.UnPackCRCs(br,(ulong) Folders.Length, out crcs);
+                            for (int i = 0; i < Folders.Length; i++)
+                            {
+                                Folders[i].UnpackCRC = crcs[i];
+                                Util.log("Folder[" + i + "].UnpackCRC = " + (Folders[i].UnpackCRC ?? 0).ToString("X"));
+                            }
+                            Util.log("Looping CRC End", -1);
+                            continue;
+                        }
+                    case HeaderProperty.kEnd:
+                        Util.log("End : ReadUnPackInfo", -1);
+                        return;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+
+
+            }
+        }
+        
+        public static void ReadSubStreamsInfo(BinaryReader br,ref Folder[] Folders)
+        {
+            Util.log("Begin : ReadSubStreamsInfo", 1);
+
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                switch (hp)
+                {
+                    case HeaderProperty.kNumUnPackStream:
+                        {
+                            Util.log("Looping Folders Begin", 1);
+                            for (int f = 0; f < Folders.Length; f++)
+                            {
+                                int numStreams = (int)br.ReadEncodedUInt64();
+                                Util.log("Folders[" + f + "].Length=" + numStreams);
+                                Folders[f].UnpackedStreamInfo = new UnpackedStreamInfo[numStreams];
+                                for (int i = 0; i < numStreams; i++)
+                                    Folders[f].UnpackedStreamInfo[i] = new UnpackedStreamInfo();
+                            }
+                            Util.log("Looping Folders End", -1);
+                            continue;
+                        }
+                    case HeaderProperty.kSize:
+                        {
+                            Util.log("Looping Folders Begin", 1);
+                            for (int f = 0; f < Folders.Length; f++)
+                            {
+                                Folder folder = Folders[f];
+
+                                if (folder.UnpackedStreamInfo.Length == 0)
+                                {
+                                    Util.log("Folder size is Zero for " + f + " Begin");
+                                    continue;
+                                }
+
+                                Util.log("Looping Folder UnpackedStreams" + f + " : " + (folder.UnpackedStreamInfo.Length - 1), 1);
+                                ulong sum = 0;
+                                for (int i = 0; i < folder.UnpackedStreamInfo.Length - 1; i++)
+                                {
+                                    ulong size = br.ReadEncodedUInt64();
+                                    folder.UnpackedStreamInfo[i].UnpackedSize = size;
+                                    Util.log("UnpackedStreams[" + i + "].UnpackedSize = " + folder.UnpackedStreamInfo[i].UnpackedSize);
+                                    sum += size;
+                                }
+                                Util.log("Looping Folder UnpackedStreams " + f + " End", -1);
+
+                                Util.log("Sum : " + sum + " : Folder[" + f + "].GetUnpackSize()=" + Folders[f].GetUnpackSize());
+                                folder.UnpackedStreamInfo[folder.UnpackedStreamInfo.Length - 1].UnpackedSize = folder.GetUnpackSize() - sum;
+                                Util.log("UnpackedStreams[" + (folder.UnpackedStreamInfo.Length - 1) + "].UnpackedSize = " + folder.UnpackedStreamInfo[folder.UnpackedStreamInfo.Length - 1].UnpackedSize);
+                            }
+                            Util.log("Looping Folders End", -1);
+                            continue;
+                        }
+                    case HeaderProperty.kCRC:
+                        {
+                            ulong numCRC = 0;
+                            foreach (var folder in Folders)
+                            {
+                                if (folder.UnpackedStreamInfo == null)
+                                {
+                                    folder.UnpackedStreamInfo = new UnpackedStreamInfo[1];
+                                    folder.UnpackedStreamInfo[0] = new UnpackedStreamInfo();
+                                    folder.UnpackedStreamInfo[0].UnpackedSize = folder.GetUnpackSize();
+                                }
+
+                                if (folder.UnpackedStreamInfo.Length != 1 || !folder.UnpackCRC.HasValue)
+                                    numCRC += (ulong)folder.UnpackedStreamInfo.Length;
+                            }
+
+                            Util.log("Reading CRC Total : " + numCRC);
+                            int crcIndex = 0;
+                            uint?[] crc;
+                            Util.UnPackCRCs(br, numCRC, out crc);
+                            Util.log("Looping Folders Begin", 1);
+                            for (uint i = 0; i < Folders.Length; i++)
+                            {
+                                Folder folder = Folders[i];
+                                if (folder.UnpackedStreamInfo.Length == 1 && folder.UnpackCRC.HasValue)
+                                {
+                                    folder.UnpackedStreamInfo[0].Crc = folder.UnpackCRC;
+                                    Util.log("UnpackedStreams[0].Crc = " + folder.UnpackedStreamInfo[0].Crc);
+                                }
+                                else
+                                {
+                                    Util.log("Looping Folder UnpackedStreams" + i + " : " + (Folders[i].UnpackedStreamInfo.Length), 1);
+                                    for (uint j = 0; j < folder.UnpackedStreamInfo.Length; j++, crcIndex++)
+                                    {
+                                        folder.UnpackedStreamInfo[j].Crc = crc[crcIndex];
+                                        Util.log("UnpackedStreams[" + j + "].Crc = " + (folder.UnpackedStreamInfo[j].Crc ?? 0).ToString("X"));
+                                    }
+                                    Util.log("Looping Folder UnpackedStreams " + i + " End", -1);
+
+                                }
+                            }
+                            Util.log("Looping Folders End", -1);
+
+                            continue;
+                        }
+                    case HeaderProperty.kEnd:
+                        Util.log("End : ReadSubStreamsInfo", -1);
+                        return;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+            }
+        }
+
+        private void WriteFolder(BinaryWriter bw)
+        {
+            ulong numCoders = (ulong)Coders.Length;
+            bw.WriteEncodedUInt64(numCoders);
+            for (ulong i=0;i<numCoders;i++)
+                Coders[i].Write(bw);
+
+            ulong numBindingPairs =BindPairs==null?0: (ulong) BindPairs.Length;
+            for(ulong i=0;i<numBindingPairs;i++)
+                BindPairs[i].Write(bw);
+
+            //need to look at PAckedStreamIndices but don't need them for basic writing I am doing
+        }
+        private void WriteUnpackedStreamSize(BinaryWriter bw)
+        {
+            ulong numUnpackedStreamSizes =(ulong) UnpackedStreamSizes.Length;
+            for (ulong i = 0; i < numUnpackedStreamSizes; i++)
+                bw.WriteEncodedUInt64(UnpackedStreamSizes[i]);
+        }
+       
+        public static void WriteUnPackInfo(BinaryWriter bw, Folder[] Folders)
+        {
+            bw.Write((byte)HeaderProperty.kUnPackInfo);
+
+            bw.Write((byte)HeaderProperty.kFolder);
+            ulong numFolders = (ulong)Folders.Length;
+            bw.WriteEncodedUInt64(numFolders);
+            bw.Write((byte)0); //External Flag
+            for (ulong i = 0; i < numFolders; i++)
+                Folders[i].WriteFolder(bw);
+
+
+            bw.Write((byte)HeaderProperty.kCodersUnPackSize);
+            for (ulong i = 0; i < numFolders; i++)
+                Folders[i].WriteUnpackedStreamSize(bw);
+
+            if (Folders[0].UnpackCRC != null)
+            {
+                bw.Write((byte)HeaderProperty.kCRC);
+                throw new NotImplementedException();
+            }
+            bw.Write((byte)HeaderProperty.kEnd);
+        }
+
+        public static void WriteSubStreamsInfo(BinaryWriter bw, Folder[] Folders)
+        {
+            bw.Write((byte)HeaderProperty.kSubStreamsInfo);
+
+            bw.Write((byte)HeaderProperty.kNumUnPackStream);
+            for (int f = 0; f < Folders.Length; f++)
+            {
+                ulong numStreams = (ulong) Folders[f].UnpackedStreamInfo.Length;
+                bw.WriteEncodedUInt64(numStreams);
+            }
+
+            bw.Write((byte)HeaderProperty.kSize);
+
+            for (int f = 0; f < Folders.Length; f++)
+            {
+                Folder folder = Folders[f];
+                for (int i = 0; i < folder.UnpackedStreamInfo.Length - 1; i++)
+                {
+                    bw.WriteEncodedUInt64(folder.UnpackedStreamInfo[i].UnpackedSize);
+                }
+            }
+
+            bw.Write((byte)HeaderProperty.kCRC);
+            bw.Write((byte)1); // crc flags default to true
+            for (int f = 0; f < Folders.Length; f++)
+            {
+                Folder folder = Folders[f];
+                for (int i = 0; i < folder.UnpackedStreamInfo.Length; i++)
+                {
+                    bw.Write(Util.uinttobytes(folder.UnpackedStreamInfo[i].Crc));
+                }
+            }
+            bw.Write((byte)HeaderProperty.kEnd);
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/Header.cs

@@ -0,0 +1,111 @@
+using System;
+using System.IO;
+using ROMVault2.SupportedFiles.SevenZip.Compress.LZMA;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class Header
+    {
+        public StreamsInfo StreamsInfo;
+        public FileInfo FileInfo;
+
+        public void Read(BinaryReader br)
+        {
+            Util.log("Begin : ReadHeader", 1);
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                switch (hp)
+                {
+                    case HeaderProperty.kMainStreamsInfo:
+                        StreamsInfo = new StreamsInfo();
+                        StreamsInfo.Read(br);
+                        break;
+
+                    case HeaderProperty.kFilesInfo:
+                        FileInfo = new FileInfo();
+                        FileInfo.Read(br);
+                        break;
+
+                    case HeaderProperty.kEnd:
+                        Util.log("End : ReadHeader", -1);
+                        return;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+            }
+        }
+
+
+        private void Write(BinaryWriter bw)
+        {
+            bw.Write((byte)HeaderProperty.kHeader);
+            StreamsInfo.Write(bw);
+            FileInfo.Write(bw);
+            bw.Write((byte)HeaderProperty.kEnd);
+        }
+
+        public void WriteHeader(BinaryWriter bw)
+        {
+            Write(bw);
+        }
+
+        public static ZipReturn ReadHeaderOrPackedHeader(Stream stream, long baseOffset, out Header header)
+        {
+            header = null;
+            Util.log("Begin : ReadHeaderOrPackedHeader", 1);
+
+            BinaryReader br = new BinaryReader(stream);
+
+            HeaderProperty hp = (HeaderProperty)br.ReadByte();
+            Util.log("HeaderProperty = " + hp);
+            switch (hp)
+            {
+                case HeaderProperty.kEncodedHeader:
+                    {
+                        StreamsInfo streamsInfo = new StreamsInfo();
+                        streamsInfo.Read(br);
+
+                        if (streamsInfo.Folders.Length > 1)
+                            return ZipReturn.ZipUnsupportedCompression;
+
+                        Folder firstFolder = streamsInfo.Folders[0];
+                        if (firstFolder.Coders.Length > 1)
+                            return ZipReturn.ZipUnsupportedCompression;
+
+                        byte[] method = firstFolder.Coders[0].Method;
+                        if (!(method.Length == 3 && method[0] == 3 && method[1] == 1 && method[2] == 1))  // LZMA
+                            return ZipReturn.ZipUnsupportedCompression;
+
+                        stream.Seek(baseOffset + (long)streamsInfo.PackPosition, SeekOrigin.Begin);
+                        using (Decoder decoder = new Decoder())
+                        {
+                            decoder.SetDecoderProperties(firstFolder.Coders[0].Properties);
+                            decoder.SetUpStream(stream);
+                            ZipReturn zr = ReadHeaderOrPackedHeader(decoder, baseOffset, out header);
+                            if (zr != ZipReturn.ZipGood)
+                                return zr;
+                        }
+                        Util.log("End : ReadHeaderOrPackedHeader (Packed)", -1);
+                        return ZipReturn.ZipGood;
+                    }
+                case HeaderProperty.kHeader:
+                    {
+                        header = new Header();
+                        header.Read(br);
+                        Util.log("End : ReadHeaderOrPackedHeader (UnPacked)", -1);
+                        return ZipReturn.ZipGood;
+                    }
+            }
+
+            return ZipReturn.ZipCenteralDirError;
+        }
+
+
+
+
+
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/PackedStreamInfo.cs

@@ -0,0 +1,91 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class PackedStreamInfo
+    {
+        public ulong PackedSize;
+        public ulong? Crc;
+        public ulong StreamPosition;
+
+        public static void Read(BinaryReader br, out ulong packPosition, out PackedStreamInfo[] packedStreams)
+        {
+            Util.log("Begin : ReadPackInfo", 1);
+
+            packPosition = br.ReadEncodedUInt64();
+            Util.log("PackPosition = " + packPosition);
+
+            ulong numPackStreams = br.ReadEncodedUInt64();
+            Util.log("NumPackStreams = " + numPackStreams);
+
+            packedStreams = new PackedStreamInfo[numPackStreams];
+            for (ulong i = 0; i < numPackStreams; i++)
+                packedStreams[i] = new PackedStreamInfo();
+
+            ulong streamPosition = 0;
+
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                switch (hp)
+                {
+                    case HeaderProperty.kSize:
+                        for (ulong i = 0; i < numPackStreams; i++)
+                        {
+                            packedStreams[i].StreamPosition = streamPosition;
+                            Util.log("PackdStream[" + i + "].StreamPosition = " + packedStreams[i].StreamPosition);
+                            packedStreams[i].PackedSize = br.ReadEncodedUInt64();
+                            Util.log("PackdStream[" + i + "].PackedSize = " + packedStreams[i].PackedSize);
+                            streamPosition += packedStreams[i].PackedSize;
+                        }
+                        continue;
+
+                    case HeaderProperty.kCRC:
+                        for (ulong i = 0; i < numPackStreams; i++)
+                        {
+                            packedStreams[i].Crc = br.ReadEncodedUInt64();
+                            Util.log("PackdStream[" + i + "].CRC = " + ((ulong)packedStreams[i].Crc).ToString("X"));
+                        }
+                        continue;
+
+                    case HeaderProperty.kEnd:
+                        Util.log("End : ReadPackInfo", -1);
+                        return;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+            }
+        }
+
+        public static void Write(BinaryWriter bw,ulong packPosition, PackedStreamInfo[] packedStreams)
+        {
+            ulong numPackStreams =(ulong) packedStreams.Length;
+            bw.Write((byte)HeaderProperty.kPackInfo);
+            bw.WriteEncodedUInt64(packPosition);
+            bw.WriteEncodedUInt64(numPackStreams);
+
+            bw.Write((byte)HeaderProperty.kSize);
+            ulong streamPosition = 0;
+            for (ulong i = 0; i < numPackStreams; i++)
+            {
+                packedStreams[i].StreamPosition = streamPosition;
+                bw.WriteEncodedUInt64(packedStreams[i].PackedSize);
+                streamPosition += packedStreams[i].PackedSize;
+            }
+
+            // Only checking the first CRC assuming all the reset will be the same
+            if (packedStreams[0].Crc != null)
+            {
+                bw.Write((byte) HeaderProperty.kCRC);
+                for (ulong i = 0; i < numPackStreams; i++)
+                    bw.WriteEncodedUInt64(packedStreams[i].Crc??0);
+            }
+
+            bw.Write((byte)HeaderProperty.kEnd);
+
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/SignatureHeader.cs

@@ -0,0 +1,117 @@
+using System;
+using System.IO;
+using ROMVault2.SupportedFiles.SevenZip.Common;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    internal class SignatureHeader
+    {
+        private static readonly byte[] Signature = {(byte) '7', (byte) 'z', 0xBC, 0xAF, 0x27, 0x1C};
+
+        private byte _major;
+        private byte _minor;
+
+        private uint _startHeaderCRC;
+
+        public ulong NextHeaderOffset;
+        public ulong NextHeaderSize;
+        public uint NextHeaderCRC;
+
+        public bool Read(BinaryReader br)
+        {
+            Util.log("Begin: Read Header", 1);
+            byte[] signatureBytes = br.ReadBytes(6);
+            if (!signatureBytes.Compare(Signature))
+            {
+                Util.log("End: Read Header signature Failed", -1);
+                return false;
+            }
+
+            _major = br.ReadByte();
+            Util.log("Major = " + _major);
+            _minor = br.ReadByte();
+            Util.log("Minor = " + _minor);
+
+            _startHeaderCRC = br.ReadUInt32();
+            Util.log("HeaderCRC = " + _startHeaderCRC.ToString("X"));
+
+            long pos = br.BaseStream.Position;
+            byte[] mainHeader = new byte[8 + 8 + 4];
+            br.BaseStream.Read(mainHeader, 0, mainHeader.Length);
+            if (!CRC.VerifyDigest(_startHeaderCRC, mainHeader, 0, (uint)mainHeader.Length))
+                return false;
+            br.BaseStream.Seek(pos, SeekOrigin.Begin);
+
+            NextHeaderOffset = br.ReadUInt64();
+            Util.log("NextHeaderOffset = " + NextHeaderOffset);
+            NextHeaderSize = br.ReadUInt64();
+            Util.log("NextHeaderSize = " + NextHeaderSize);
+            NextHeaderCRC = br.ReadUInt32();
+            Util.log("NextHeaderCRC = " + NextHeaderCRC.ToString("X"));
+
+            Util.log("End: Read Header", -1);
+            return true;
+        }
+
+
+        private long _crcOffset;
+        public long BaseOffset { get; private set; }
+
+        public void Write(BinaryWriter bw)
+        {
+            //SignatureHeader
+            //~~~~~~~~~~~~~~~
+
+            bw.Write(Signature);
+
+            //ArchiveVersion
+            //{
+            bw.Write((byte) 0); //  BYTE Major
+            bw.Write((byte) 3); //  BYTE Minor
+            //};
+
+            _crcOffset = bw.BaseStream.Position;
+            bw.Write((uint) 0); //HeaderCRC
+
+            //StartHeader
+            //{
+            bw.Write((ulong) 0); //NextHeaderOffset
+            bw.Write((ulong) 0); //NextHeaderSize
+            bw.Write((uint) 0); //NextHeaderCRC
+            //}
+
+            BaseOffset = bw.BaseStream.Position;
+        }
+
+        public void WriteFinal(BinaryWriter bw, ulong headerpos, ulong headerLength, uint headerCRC)
+        {
+            long fileEnd = bw.BaseStream.Position;
+
+
+            byte[] sigHeaderBytes;
+            using (MemoryStream sigHeaderMem = new MemoryStream())
+            {
+                using (BinaryWriter sigHeaderBw = new BinaryWriter(sigHeaderMem))
+                {
+                    sigHeaderBw.Write((ulong) ((long) headerpos - BaseOffset)); //NextHeaderOffset
+                    sigHeaderBw.Write(headerLength); //NextHeaderSize
+                    sigHeaderBw.Write(headerCRC); //NextHeaderCRC
+
+                    sigHeaderBytes = new byte[sigHeaderMem.Length];
+                    sigHeaderMem.Position = 0;
+                    sigHeaderMem.Read(sigHeaderBytes, 0, sigHeaderBytes.Length);
+                }
+            }
+
+            CRC sigHeadercrc = new CRC();
+            sigHeadercrc.Update(sigHeaderBytes, 0, (uint) sigHeaderBytes.Length);
+            UInt32 sigHeaderCRC = sigHeadercrc.GetDigest();
+
+            bw.BaseStream.Position = _crcOffset;
+            bw.Write(sigHeaderCRC); //Header CRC
+            bw.Write(sigHeaderBytes);
+
+            bw.BaseStream.Seek(fileEnd, SeekOrigin.Begin);
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/StreamsInfo.cs

@@ -0,0 +1,52 @@
+using System;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class StreamsInfo
+    {
+        public ulong PackPosition;
+        public PackedStreamInfo[] PackedStreams;
+        public Folder[] Folders;
+
+        public void Read(BinaryReader br)
+        {
+            Util.log("Begin : ReadStreamsInfo", 1);
+            for (; ; )
+            {
+                HeaderProperty hp = (HeaderProperty)br.ReadByte();
+                Util.log("HeaderProperty = " + hp);
+                switch (hp)
+                {
+                    case HeaderProperty.kPackInfo:
+                        PackedStreamInfo.Read(br, out PackPosition, out PackedStreams);
+                        continue;
+
+                    case HeaderProperty.kUnPackInfo:
+                        Folder.ReadUnPackInfo(br, out Folders);
+                        continue;
+
+                    case HeaderProperty.kSubStreamsInfo:
+                        Folder.ReadSubStreamsInfo(br, ref Folders);
+                        continue;
+
+                    case HeaderProperty.kEnd:
+                        Util.log("End : ReadStreamInfo", -1);
+                        return;
+
+                    default:
+                        throw new Exception(hp.ToString());
+                }
+            }
+        }
+
+        public void Write(BinaryWriter bw)
+        {
+            bw.Write((byte)HeaderProperty.kMainStreamsInfo);
+            PackedStreamInfo.Write(bw, PackPosition, PackedStreams);
+            Folder.WriteUnPackInfo(bw, Folders);
+            Folder.WriteSubStreamsInfo(bw, Folders);
+            bw.Write((byte)HeaderProperty.kEnd);
+        }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Structure/UnpackedStreamInfo.cs

@@ -0,0 +1,8 @@
+namespace ROMVault2.SupportedFiles.SevenZip.Structure
+{
+    public class UnpackedStreamInfo
+    {
+        public ulong UnpackedSize;
+        public uint? Crc;
+    }
+}

ROMVault2/SupportedFiles/SevenZip/TesterStream.cs

@@ -0,0 +1,82 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace ROMVault2.SupportedFiles.SevenZip
+{
+    public class TesterStream : Stream
+    {
+        private int pos = 0;
+        private List<byte> arrByte; 
+        private byte[] testarr;
+        private int index = 0;
+
+        public TesterStream(byte[] test)
+        {
+            arrByte=new List<byte>();
+            testarr = test;
+            index = 0;
+        }
+
+        public override void Flush()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override long Seek(long offset, SeekOrigin origin)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void SetLength(long value)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override int Read(byte[] buffer, int offset, int count)
+        {
+            for (int i = 0; i < count; i++)
+            {
+                buffer[offset + i] = arrByte[pos];
+                pos += 1;
+            }
+            return count;
+        }
+
+        public override void Write(byte[] buffer, int offset, int count)
+        {
+            for (int i = 0; i < count; i++)
+            {
+                byte test = buffer[i + offset];
+                arrByte.Add(test);
+                if (test != testarr[index])
+                {
+                    Console.WriteLine("Expected ="+testarr[index]+" : Found = "+test);
+                }
+                index += 1;
+            }
+        }
+
+        public override bool CanRead
+        {
+            get { throw new NotImplementedException(); }
+        }
+
+        public override bool CanSeek
+        {
+            get { throw new NotImplementedException(); }
+        }
+
+        public override bool CanWrite
+        {
+            get { return true; }
+        }
+
+        public override long Length
+        {
+            get { return arrByte.Count; }
+        }
+
+        public override long Position { get; set; }
+    }
+}

ROMVault2/SupportedFiles/SevenZip/Util.cs

@@ -0,0 +1,315 @@
+using System;
+using System.Diagnostics;
+using System.IO;
+using System.Text;
+
+namespace ROMVault2.SupportedFiles.SevenZip
+{
+    public enum HeaderProperty
+    {
+        kEnd,
+        kHeader,
+
+        kArchiveProperties,
+
+        kAdditionalStreamsInfo,
+        kMainStreamsInfo,
+        kFilesInfo,
+
+        kPackInfo,
+        kUnPackInfo,
+        kSubStreamsInfo,
+
+        kSize,
+        kCRC,
+
+        kFolder,
+
+        kCodersUnPackSize,
+        kNumUnPackStream,
+
+        kEmptyStream,
+        kEmptyFile,
+        kAnti,
+
+        kName,
+        kCreationTime,
+        kLastAccessTime,
+        kLastWriteTime,
+        kWinAttributes,
+        kComment,
+
+        kEncodedHeader,
+
+        kStartPos,
+        kDummy
+    }
+
+    public static class Util
+    {
+        public static readonly Encoding Enc = Encoding.GetEncoding(28591);
+
+        private static int indent = 0;
+        public static void log(string txt, int ind = 0)
+        {
+            if (ind < 0) indent += ind;
+            for (int i = 0; i < indent; i++)
+                Debug.Write("   ");
+            Debug.WriteLine(txt);
+            if (ind == -1)
+                Debug.WriteLine("");
+            if (ind > 0) indent += ind;
+        }
+
+        public static void memset(byte[] buffer, int start, byte val, int len)
+        {
+            for (int i = 0; i < len; i++)
+                buffer[start + i] = val;
+        }
+
+        public static void memcpyr(byte[] destBuffer, int destPoint, byte[] sourceBuffer, int sourcePoint, int len)
+        {
+            for (int i = len - 1; i >= 0; i--)
+                destBuffer[destPoint + i] = sourceBuffer[sourcePoint + i];
+        }
+
+
+        public static bool memcmp(byte[] buffer1, int offset, byte[] buffer2, int len)
+        {
+            for (int i = 0; i < len; i++)
+            {
+                if (buffer1[offset + i] != buffer2[i])
+                    return false;
+            }
+            return true;
+        }
+
+
+
+        public static bool Compare(this byte[] b1, byte[] b2)
+        {
+            if (b1 == null || b2 == null) return false;
+
+            if (b1.Length != b2.Length) return false;
+
+            for (int i = 0; i < b1.Length; i++)
+                if (b1[i] != b2[i]) return false;
+
+            return true;
+        }
+
+
+        public static ulong ReadEncodedUInt64(this BinaryReader br)
+        {
+            byte mask = 0x80;
+            int i;
+            byte firstByte = br.ReadByte();
+            ulong value = 0;
+            for (i = 0; i < 8; i++)
+            {
+                if ((firstByte & mask) == 0)
+                {
+                    ulong highPart = (ulong)(firstByte & (mask - 1));
+                    value += (highPart << (8 * i));
+                    return value;
+                }
+                byte b = br.ReadByte();
+                value |= ((ulong)b << (8 * i));
+                mask >>= 1;
+            }
+            return value;
+        }
+        public static void WriteEncodedUInt64(this BinaryWriter bw, ulong value)
+        {
+            byte firstByte = 0;
+            byte mask = 0x80;
+            int i;
+            for (i = 0; i < 8; i++)
+            {
+                if (value < ((ulong)(1) << (7 * (i + 1))))
+                {
+                    firstByte |= (byte)(value >> (8 * i));
+                    break;
+                }
+                firstByte |= mask;
+                mask >>= 1;
+            }
+            bw.Write(firstByte);
+            for (; i > 0; i--)
+            {
+                bw.Write((byte)value);
+                value >>= 8;
+            }
+        }
+
+        public static string ReadName(this BinaryReader br)
+        {
+            StringBuilder stringBuilder = new StringBuilder();
+            for (; ; )
+            {
+                char c = (char)br.ReadUInt16();
+                if (c == 0) return stringBuilder.ToString();
+                stringBuilder.Append(c);
+            }
+        }
+
+        public static void WriteName(this BinaryWriter bw, string name)
+        {
+            char[] chars = name.ToCharArray();
+            for (int i = 0; i < chars.Length; i++)
+            {
+                bw.Write((UInt16)chars[i]);
+            }
+            bw.Write((UInt16)0);
+        }
+
+
+
+        public static void UnPackCRCs(BinaryReader br, ulong numItems, out uint?[] digests)
+        {
+            bool[] digestsDefined = ReadBoolFlagsDefaultTrue(br, numItems);
+            digests = new uint?[numItems];
+            for (ulong i = 0; i < numItems; i++)
+            {
+                if (digestsDefined[i])
+                {
+                    digests[i] = br.ReadUInt32();
+                }
+            }
+        }
+        private static bool[] ReadBoolFlagsDefaultTrue(BinaryReader br, ulong numItems)
+        {
+            byte allAreDefined = br.ReadByte();
+            if (allAreDefined == 0)
+            {
+                return ReadBoolFlags(br, numItems);
+            }
+            bool[] flags = new bool[numItems];
+            for (ulong i = 0; i < numItems; i++)
+            {
+                flags[i] = true;
+            }
+            return flags;
+        }
+        public static bool[] ReadBoolFlags(BinaryReader br, ulong numItems)
+        {
+            byte b = 0;
+            byte mask = 0;
+
+            bool[] flags = new bool[numItems];
+            for (ulong i = 0; i < numItems; i++)
+            {
+                if (mask == 0)
+                {
+                    b = br.ReadByte();
+                    mask = 0x80;
+                }
+
+                flags[i] = ((b & mask) != 0);
+
+                mask >>= 1;
+            }
+            return flags;
+        }
+
+        public static bool[] ReadBoolFlags2(BinaryReader br, ulong numItems)
+        {
+            byte allAreDefined = br.ReadByte();
+            if (allAreDefined == 0)
+                return ReadBoolFlags(br, numItems);
+
+
+            bool[] flags = new bool[numItems];
+            for (ulong i = 0; i < numItems; i++)
+                flags[i] = true;
+            return flags;
+        }
+
+        public static void WriteUint32Def(BinaryWriter br, uint[] values)
+        {
+            br.WriteEncodedUInt64((ulong)(values.Length * 4 + 2));
+            br.Write((byte)1);
+            br.Write((byte)0);
+            for (int i = 0; i < values.Length; i++)
+                br.Write(values[i]);
+        }
+
+        public static uint[] ReadUInt32Def(BinaryReader br, ulong numItems)
+        {
+            uint[] v = new uint[numItems];
+            bool[] defs = ReadBoolFlags2(br, numItems);
+            byte tmp = br.ReadByte();
+            for (ulong i = 0; i < numItems; i++)
+                v[i] = defs[i] ? br.ReadUInt32() : 0;
+
+            return v;
+        }
+
+        public static ulong[] ReadUInt64Def(BinaryReader br, ulong numItems)
+        {
+            ulong[] v = new ulong[numItems];
+            bool[] defs = ReadBoolFlags2(br, numItems);
+            byte tmp = br.ReadByte();
+            for (ulong i = 0; i < numItems; i++)
+                v[i] = defs[i] ? br.ReadUInt64() : 0;
+
+            return v;
+        }
+
+        public static void WriteBoolFlags(BinaryWriter bw, bool[] bArray)
+        {
+            bw.WriteEncodedUInt64((ulong)((bArray.Length + 7) / 8));
+            byte mask = 0x80;
+            byte tmpOut = 0;
+            for (int i = 0; i < bArray.Length; i++)
+            {
+                if (bArray[i])
+                    tmpOut |= mask;
+
+                mask >>= 1;
+                if (mask != 0)
+                    continue;
+
+                bw.Write(tmpOut);
+                mask = 0x80;
+                tmpOut = 0;
+            }
+            if (mask != 0x80)
+                bw.Write(tmpOut);
+        }
+
+        public static byte[] uinttobytes(uint? crc)
+        {
+            if (crc == null) return null;
+            uint c = (uint)crc;
+
+            byte[] b = new byte[4];
+            b[0] = (byte)((c >> 24) & 0xff);
+            b[1] = (byte)((c >> 16) & 0xff);
+            b[2] = (byte)((c >> 8) & 0xff);
+            b[3] = (byte)((c >> 0) & 0xff);
+            return b;
+        }
+        public static uint? bytestouint(byte[] crc)
+        {
+            if (crc == null) return null;
+
+            return (uint?)(crc[0] << 24 | (crc[1] << 16) | (crc[2] << 8) | (crc[3] << 0));
+        }
+        public static bool ByteArrCompare(byte[] b0, byte[] b1)
+        {
+            if (b0 == null || b1 == null)
+                return false;
+            if (b0.Length != b1.Length)
+                return false;
+
+            for (int i = 0; i < b0.Length; i++)
+            {
+                if (b0[i] != b1[i])
+                    return false;
+            }
+            return true;
+        }
+
+    }
+}

ROMVault2/SupportedFiles/Zip/zipFile.cs

@@ -18,7 +18,7 @@ using ROMVault2.SupportedFiles.Zip.ZLib;
 namespace ROMVault2.SupportedFiles.Zip
 {
   
-    public class ZipFile
+    public class ZipFile : ICompress
     {
         const int Buffersize = 4096 * 128;
         private static byte[] _buffer;
@@ -807,7 +807,7 @@ namespace ROMVault2.SupportedFiles.Zip
 
         private ZipStatus _pZipStatus;
         private bool _zip64;
-        public ZipOpenType ZipOpen;
+        public ZipOpenType ZipOpen { get; private set; }
 
         public ZipStatus ZipStatus { get { return _pZipStatus; } }
 

ROMVault2/SupportedFiles/ZipEnums.cs

@@ -34,6 +34,7 @@ namespace ROMVault2.SupportedFiles
         ZipErrorReadingFile,
         ZipErrorTimeStamp,
         ZipErrorRollBackFile,
+        ZipTryingToAccessADirectory,
         ZipUntested
 
     }

ROMVault2/Utils/DBTypeGet.cs

@@ -19,6 +19,8 @@ namespace ROMVault2.Utils
                     return FileType.Dir;
                 case FileType.ZipFile:
                     return FileType.Zip;
+                case FileType.SevenZipFile:
+                    return FileType.SevenZip;
             }
             return FileType.Zip;
         }
@@ -31,13 +33,15 @@ namespace ROMVault2.Utils
                     return FileType.File;
                 case FileType.Zip:
                     return FileType.ZipFile;
+                case FileType.SevenZip:
+                    return FileType.SevenZipFile;
             }
             return FileType.Zip;
         }
 
         public static bool isCompressedDir(FileType fileType)
         {
-            return (fileType == FileType.Zip);
+            return (fileType == FileType.Zip || fileType==FileType.SevenZip);
         }
 
         public static RvBase GetRvType(FileType fileType)
@@ -46,9 +50,11 @@ namespace ROMVault2.Utils
             {
                 case FileType.Dir: 
                 case FileType.Zip: 
+                case FileType.SevenZip:
                     return new RvDir(fileType);
                 case FileType.File:
                 case FileType.ZipFile:
+                case FileType.SevenZipFile:
                     return new RvFile(fileType);
                 default:
                     throw new Exception("Unknown file type");

ROMVault2/rvImages.cs

@@ -11,10 +11,6 @@ namespace ROMVault2
 {
     public static class rvImages
     {
-        private static List<string> names;
-        private static List<Bitmap> images; 
-
-
         public static Bitmap GetBitmap(string bitmapName)
         {
             object bmObj = rvImages1.ResourceManager.GetObject(bitmapName);
@@ -25,32 +21,5 @@ namespace ROMVault2
 
             return bm;
         }
-
-        public static Bitmap TickBoxDisabled 
-        {
-            get { return GetBitmap("TickBoxDisabled"); }
-        }
-        public static Bitmap TickBoxTicked
-        {
-            get { return GetBitmap("TickBoxTicked"); }
-        }
-        public static Bitmap TickBoxUnTicked
-        {
-            get { return GetBitmap("TickBoxUnTicked"); }
-        }
-
-        public static Bitmap ExpandBoxMinus
-        {
-            get { return GetBitmap("ExpandBoxMinus"); }
-        }
-        public static Bitmap ExpandBoxPlus
-        {
-            get { return GetBitmap("ExpandBoxPlus"); }
-        }
-
-        public static Bitmap romvaultTZ
-        {
-            get { return GetBitmap("romvaultTZ"); }            
-        }
     }
 }

ROMVault2/rvImages1.Designer.cs

@@ -1,7 +1,7 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
 //     This code was generated by a tool.
-//     Runtime Version:4.0.30319.34011
+//     Runtime Version:4.0.30319.0
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -60,6 +60,56 @@ namespace ROMVault2 {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap btnFindFixes_BackgroundImage {
+            get {
+                object obj = ResourceManager.GetObject("btnFindFixes_BackgroundImage", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap btnFixFiles_BackgroundImage {
+            get {
+                object obj = ResourceManager.GetObject("btnFixFiles_BackgroundImage", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap btnReport_BackgroundImage {
+            get {
+                object obj = ResourceManager.GetObject("btnReport_BackgroundImage", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap btnScanRoms_BackgroundImage {
+            get {
+                object obj = ResourceManager.GetObject("btnScanRoms_BackgroundImage", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap btnUpdateDats_BackgroundImage {
+            get {
+                object obj = ResourceManager.GetObject("btnUpdateDats_BackgroundImage", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>
@@ -610,6 +660,56 @@ namespace ROMVault2 {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap SevenZipDirCorrect {
+            get {
+                object obj = ResourceManager.GetObject("SevenZipDirCorrect", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap SevenZipDirInToSort {
+            get {
+                object obj = ResourceManager.GetObject("SevenZipDirInToSort", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap SevenZipDirMissing {
+            get {
+                object obj = ResourceManager.GetObject("SevenZipDirMissing", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap SevenZipDirUnknown {
+            get {
+                object obj = ResourceManager.GetObject("SevenZipDirUnknown", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Bitmap.
+        /// </summary>
+        internal static System.Drawing.Bitmap SevenZipTZ {
+            get {
+                object obj = ResourceManager.GetObject("SevenZipTZ", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Drawing.Bitmap.
         /// </summary>

ROMVault2/rvTree.cs

@@ -170,7 +170,7 @@ namespace ROMVault2
             if (!pTree.Tree.RExpand.IsEmpty)
                 if (pTree.Tree.RExpand.IntersectsWith(t))
                 {
-                    g.DrawImage(pTree.Tree.TreeExpanded ? rvImages.ExpandBoxMinus : rvImages.ExpandBoxPlus, RSub(pTree.Tree.RExpand, _hScroll, _vScroll));
+                    g.DrawImage(pTree.Tree.TreeExpanded ? rvImages1.ExpandBoxMinus : rvImages1.ExpandBoxPlus, RSub(pTree.Tree.RExpand, _hScroll, _vScroll));
                 }
 
 
@@ -179,13 +179,13 @@ namespace ROMVault2
                 switch (pTree.Tree.Checked)
                 {
                     case RvTreeRow.TreeSelect.Disabled:
-                        g.DrawImage(rvImages.TickBoxDisabled, RSub(pTree.Tree.RChecked, _hScroll, _vScroll));
+                        g.DrawImage(rvImages1.TickBoxDisabled, RSub(pTree.Tree.RChecked, _hScroll, _vScroll));
                         break;
                     case RvTreeRow.TreeSelect.UnSelected:
-                        g.DrawImage(rvImages.TickBoxUnTicked, RSub(pTree.Tree.RChecked, _hScroll, _vScroll));
+                        g.DrawImage(rvImages1.TickBoxUnTicked, RSub(pTree.Tree.RChecked, _hScroll, _vScroll));
                         break;
                     case RvTreeRow.TreeSelect.Selected:
-                        g.DrawImage(rvImages.TickBoxTicked, RSub(pTree.Tree.RChecked, _hScroll, _vScroll));
+                        g.DrawImage(rvImages1.TickBoxTicked, RSub(pTree.Tree.RChecked, _hScroll, _vScroll));
                         break;
                 }
             }