private static bool ScanAFile(string realFilename, Stream memzip, string displayFilename)
{
Compress.File.File fStream = new Compress.File.File();
if (string.IsNullOrEmpty(realFilename) && memzip != null)
{
fStream.ZipFileOpen(memzip);
}
else
{
ZipReturn zRet = fStream.ZipFileOpen(realFilename, -1, true);
if (zRet != ZipReturn.ZipGood)
{
return(false);
}
}
bool ret = false;
FileScan fScan = new FileScan();
List <FileScan.FileResults> resScan = fScan.Scan(fStream, true, true);
HeaderFileType foundFileType = resScan[0].HeaderFileType;
if (foundFileType == HeaderFileType.CHD)
{
// read altheader values from CHD file.
}
RvFile tFile = new RvFile
{
Size = resScan[0].Size,
CRC = resScan[0].CRC,
MD5 = resScan[0].MD5,
SHA1 = resScan[0].SHA1,
AltType = resScan[0].HeaderFileType,
AltSize = resScan[0].AltSize,
AltCRC = resScan[0].AltCRC,
AltMD5 = resScan[0].AltMD5,
AltSHA1 = resScan[0].AltSHA1
};
// test if needed.
FindStatus res = RvRomFileMatchup.FileneededTest(tFile);
if (res == FindStatus.FileNeededInArchive)
{
_bgw?.ReportProgress(0, new bgwShowError(displayFilename, "found"));
Debug.WriteLine("Reading file as " + tFile.SHA1);
string outfile = RomRootDir.Getfilename(tFile.SHA1);
gZip gz1 = new gZip();
gz1.ZipFileCreate(outfile);
gz1.ExtraData = tFile.SetExtraData();
gz1.ZipFileOpenWriteStream(false, true, "", tFile.Size, 8, out Stream write, null);
fStream.ZipFileOpenReadStream(0, out Stream s, out ulong _);
// do copy
StreamCopier.StreamCopy(s, write, tFile.Size);
fStream.ZipFileCloseReadStream();
fStream.ZipFileClose();
gz1.ZipFileCloseWriteStream(tFile.CRC);
tFile.CompressedSize = gz1.CompressedSize;
gz1.ZipFileClose();
tFile.DBWrite();
ret = true;
}
else if (res == FindStatus.FoundFileInArchive)
{
ret = true;
}
fStream.ZipFileClose();
if (foundFileType == HeaderFileType.ZIP || foundFileType == HeaderFileType.SevenZip || foundFileType == HeaderFileType.GZ)
{
ICompress fz;
switch (foundFileType)
{
case HeaderFileType.SevenZip:
fz = new SevenZ();
break;
case HeaderFileType.GZ:
fz = new gZip();
break;
//case HeaderFileType.ZIP:
default:
fz = new Zip();
break;
}
ZipReturn zp;
if (string.IsNullOrEmpty(realFilename) && memzip != null)
{
memzip.Position = 0;
zp = fz.ZipFileOpen(memzip);
}
else
{
zp = fz.ZipFileOpen(realFilename);
}
if (zp == ZipReturn.ZipGood)
{
bool allZipFound = true;
for (int i = 0; i < fz.LocalFilesCount(); i++)
{
LocalFile lf = fz.GetLocalFile(i);
ZipReturn openFile = fz.ZipFileOpenReadStream(i, out Stream stream, out ulong streamSize);
if (streamSize <= _inMemorySize)
{
if (openFile == ZipReturn.ZipTryingToAccessADirectory)
{
continue;
}
byte[] tmpFile = new byte[streamSize];
stream.Read(tmpFile, 0, (int)streamSize);
using (Stream memStream = new MemoryStream(tmpFile, false))
{
allZipFound &= ScanAFile(null, memStream, lf.Filename);
}
}
else
{
string file = Path.Combine(_tmpDir, Guid.NewGuid().ToString());
FileStream.OpenFileWrite(file, out Stream fs);
ulong sizetogo = streamSize;
while (sizetogo > 0)
{
int sizenow = sizetogo > (ulong)Buffersize ? Buffersize : (int)sizetogo;
stream.Read(Buffer, 0, sizenow);
fs.Write(Buffer, 0, sizenow);
sizetogo -= (ulong)sizenow;
}
fs.Close();
allZipFound &= ScanAFile(file, null, lf.Filename);
File.Delete(file);
}
//fz.ZipFileCloseReadStream();
}
fz.ZipFileClose();
ret |= allZipFound;
}
else
{
ret = false;
}
}
return(ret);
}
