private static FindStatus fileneededTest(RvFile tFile)
{
// first check to see if we already have it in the file table
bool inFileDB = RvRomFileMatchup.FindInFiles(tFile); // returns true if found in File table
return(inFileDB ? FindStatus.FoundFileInArchive : FindStatus.FileNeededInArchive);
}
private static bool ScanAFile(string realFilename, Stream memzip, string displayFilename)
{
Stream fStream;
if (string.IsNullOrEmpty(realFilename) && memzip != null)
{
fStream = memzip;
}
else
{
int errorCode = FileStream.OpenFileRead(realFilename, out fStream);
if (errorCode != 0)
{
return(false);
}
}
bool ret = false;
HeaderFileType foundFileType = FileHeaderReader.FileHeaderReader.GetType(fStream, out int offset);
fStream.Position = 0;
RvFile tFile = UnCompFiles.CheckSumRead(fStream, offset);
tFile.AltType = foundFileType;
if (foundFileType == HeaderFileType.CHD)
{
// read altheader values from CHD file.
}
// 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);
GZip gz = new GZip(tFile);
string outfile = RomRootDir.Getfilename(tFile.SHA1);
fStream.Position = 0;
gz.WriteGZip(outfile, fStream, false);
tFile.CompressedSize = gz.compressedSize;
tFile.DBWrite();
ret = true;
}
else if (res == FindStatus.FoundFileInArchive)
{
ret = true;
}
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;
}
fStream.Position = 0;
ZipReturn zp;
if (string.IsNullOrEmpty(realFilename) && memzip != null)
{
zp = fz.ZipFileOpen(memzip);
}
else
{
zp = fz.ZipFileOpen(realFilename);
}
if (zp == ZipReturn.ZipGood)
{
bool allZipFound = true;
for (int i = 0; i < fz.LocalFilesCount(); 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, fz.Filename(i));
}
}
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, fz.Filename(i));
File.Delete(file);
}
//fz.ZipFileCloseReadStream();
}
fz.ZipFileClose();
ret |= allZipFound;
}
else
{
ret = false;
}
}
if (!string.IsNullOrEmpty(realFilename) || memzip == null)
{
fStream.Close();
fStream.Dispose();
}
return(ret);
}