private void ProcessChunkFile(PackageChildEntry childEntry, IEnumerable <IPackageProcessor> matchingPackageProcessors)
{
foreach (IPackageProcessor packageFileProcessor in matchingPackageProcessors)
{
cachedSubStream.Initialize(reader.BaseStream, childEntry.FileOffset, childEntry.FileSize);
Stream workStream = cachedSubStream;
if (packageFileProcessor.Crypto != null)
{
byte[] buffer = new byte[workStream.Length];
workStream.Read(buffer);
var blowfish = new MHWCrypto.Blowfish(packageFileProcessor.Crypto.Key);
blowfish.Decrypt(buffer);
workStream = new MemoryStream(buffer);
}
try
{
packageFileProcessor.ProcessChunkFile(workStream, childEntry.ChunkFullFilename);
}
catch (SkipException ex)
{
logger.LogInformation($"Skipped '{(reader.BaseStream is FileStream fs ? fs.Name : "<unknown>")}' => '{childEntry.ChunkFullFilename}' [{ex.Message}] ");
}
}
}
private void RunMatchingPackageProcessors(PackageChildEntry childEntry, IEnumerable <IPackageProcessor> matchingPackageProcessors)
{
PreChunkFileProcess(matchingPackageProcessors, childEntry.ChunkFullFilename);
long savedPosition = reader.BaseStream.Position;
try
{
ProcessChunkFile(childEntry, matchingPackageProcessors);
}
finally
{
reader.BaseStream.Seek(savedPosition, SeekOrigin.Begin);
}
PostChunkFileProcess(matchingPackageProcessors, childEntry.ChunkFullFilename);
}
private void ProcessChildEntry()
{
var childEntry = PackageChildEntry.Read(reader);
if (childEntry.EntryType == 1) // Folder
{
return;
}
if (childEntry.EntryType != 0 && childEntry.EntryType != 2)
{
logger?.LogError($"Found file in chunk but unexpected entry type (expected 0, actual is {childEntry.EntryType})");
return;
}
IEnumerable <IPackageProcessor> matchingPackageProcessors = packageProcessors
.Where(x => x.IsChunkFileMatching(childEntry.ChunkFullFilename))
.ToList(); // <-- Need to freeze the state here, since iterated many times.
RunMatchingPackageProcessors(childEntry, matchingPackageProcessors);
}
