public bool HasValidCachedEntry(InputPackEntry inputFile, uint fileIndex, out PackedCacheEntry cacheEntry)
{
if (Entries.TryGetValue(inputFile.VolumeDirPath, out PackedCacheEntry cachedEntry))
{
cacheEntry = cachedEntry;
if (cachedEntry.FileIndex == fileIndex && cachedEntry.FileSize == inputFile.FileSize && cachedEntry.LastModified.Equals(inputFile.LastModified))
{
return(true);
}
}
cacheEntry = null;
return(false);
}
/// <summary>
/// Reads the specified packing cache, used to speed up the packing process by ignoring files that are already properly packed..
/// </summary>
/// <param name="path"></param>
public void ReadPackingCache(string path)
{
using var ts = File.OpenText(path);
while (!ts.EndOfStream)
{
var entry = new PackedCacheEntry();
string line = ts.ReadLine();
string[] args = line.Split("\t");
entry.VolumePath = args[0];
entry.FileIndex = uint.Parse(args[1]);
entry.LastModified = DateTime.Parse(args[2]);
entry.FileSize = long.Parse(args[3]);
entry.CompressedFileSize = long.Parse(args[4]);
_packCache.Entries.Add(entry.VolumePath, entry);
}
}
private void PackFile(PackCache packCache, string outputDir, bool packAllAsNewEntries, PackCache newCache, FileEntryKey tocFile, InputPackEntry file)
{
Program.Log($"[:] Pack: Processing {file.VolumeDirPath}");
FileInfoKey key = FileInfos.GetByFileIndex(tocFile.EntryIndex);
if (packAllAsNewEntries && !file.IsAddedFile)
{
uint oldEntryFileIndex = key.FileIndex;
key = ModifyExistingEntryAsNew(key, file.VolumeDirPath);
Program.Log($"[:] Entry key for {file.VolumeDirPath} changed as new: {oldEntryFileIndex} -> {key.FileIndex}");
}
uint newUncompressedSize = (uint)file.FileSize;
uint newCompressedSize = (uint)file.FileSize;
string pfsFilePath = PDIPFSPathResolver.GetPathFromSeed(tocFile.EntryIndex);
// Check for cached file
if (ParentVolume.UsePackingCache && packCache.HasValidCachedEntry(file, key.FileIndex, out PackedCacheEntry validCacheEntry))
{
string oldFilePath = Path.Combine(outputDir, pfsFilePath);
if (File.Exists(oldFilePath))
{
newCache.Entries.Add(file.VolumeDirPath, validCacheEntry);
Program.Log($"[:] Pack: {file.VolumeDirPath} found in cache file, does not need compressing/encrypting");
string movePath = Path.Combine($"{outputDir}_temp", pfsFilePath);
Directory.CreateDirectory(Path.GetDirectoryName(movePath));
File.Move(oldFilePath, Path.Combine($"{outputDir}_temp", pfsFilePath));
UpdateKeyAndRetroactiveAdjustSegments(key, (uint)validCacheEntry.CompressedFileSize, (uint)validCacheEntry.FileSize);
return;
}
else
{
Program.Log($"[:] Pack: {file.VolumeDirPath} found in cache file but actual file is missing ({pfsFilePath}) - recreating it");
}
}
byte[] fileData = File.ReadAllBytes(file.FullPath);
if (ParentVolume.NoCompress)
{
key.Flags &= ~FileInfoFlags.Compressed;
}
else if (key.Flags.HasFlag(FileInfoFlags.Compressed))
{
Program.Log($"[:] Pack: Compressing {file.VolumeDirPath}");
fileData = MiscUtils.ZlibCompress(fileData);
newCompressedSize = (uint)fileData.Length;
}
Program.Log($"[:] Pack: Saving and encrypting {file.VolumeDirPath} -> {pfsFilePath}");
// Will also update the ones we pre-registered
UpdateKeyAndRetroactiveAdjustSegments(key, newCompressedSize, newUncompressedSize);
ParentVolume.Keyset.CryptBytes(fileData, fileData, key.FileIndex);
string outputFile = Path.Combine($"{outputDir}_temp", pfsFilePath);
Directory.CreateDirectory(Path.GetDirectoryName(outputFile));
File.WriteAllBytes(outputFile, fileData);
if (ParentVolume.UsePackingCache)
{
// Add to our new cache
var newCacheEntry = new PackedCacheEntry()
{
FileIndex = tocFile.EntryIndex,
FileSize = newUncompressedSize,
LastModified = file.LastModified,
VolumePath = file.VolumeDirPath,
CompressedFileSize = newCompressedSize,
};
newCache.Entries.Add(file.VolumeDirPath, newCacheEntry);
}
}