private static bool TryGetFromCache(Context context, VirtualFile parent, IPath path, IStreamFactory extractedFile, Hash hash, out VirtualFile found)
{
var result = _vfsCache.Get(hash.ToArray());
if (result == null)
{
found = null;
return(false);
}
var data = IndexedVirtualFile.Read(new MemoryStream(result));
found = ConvertFromIndexedFile(context, data, path, parent, extractedFile);
found.Name = path;
found.Hash = hash;
return(true);
}
public static IndexedVirtualFile Read(Stream s)
{
using var br = new BinaryReader(s);
var ivf = new IndexedVirtualFile
{
Size = br.ReadInt64(),
};
var lst = new List <IndexedVirtualFile>();
ivf.Children = lst;
var count = br.ReadInt32();
for (int x = 0; x < count; x++)
{
lst.Add(Read(br));
}
return(ivf);
}
private static VirtualFile ConvertFromIndexedFile(Context context, IndexedVirtualFile file, IPath path, VirtualFile vparent, IExtractedFile extractedFile)
{
var vself = new VirtualFile
{
Context = context,
Name = path,
Parent = vparent,
Size = file.Size,
LastModified = extractedFile.LastModifiedUtc.AsUnixTime(),
LastAnalyzed = DateTime.Now.AsUnixTime(),
Hash = file.Hash
};
vself.FillFullPath();
vself.Children = file.Children.Select(f => ConvertFromIndexedFile(context, f, f.Name, vself, extractedFile)).ToImmutableList();
return(vself);
}
private static bool TryGetFromCache(Context context, VirtualFile parent, IPath path, IStreamFactory extractedFile, Hash hash, out VirtualFile found)
{
using var cmd = new SQLiteCommand(_conn);
cmd.CommandText = @"SELECT Contents FROM VFSCache WHERE Hash = @hash";
cmd.Parameters.AddWithValue("@hash", (long)hash);
using var rdr = cmd.ExecuteReader();
while (rdr.Read())
{
var data = IndexedVirtualFile.Read(rdr.GetStream(0));
found = ConvertFromIndexedFile(context, data, path, parent, extractedFile);
found.Name = path;
found.Hash = hash;
return(true);
}
found = default;
return(false);
}
private static IndexedVirtualFile Read(BinaryReader br)
{
var ivf = new IndexedVirtualFile
{
Name = (RelativePath)br.ReadString(),
Hash = Hash.FromULong(br.ReadUInt64()),
Size = br.ReadInt64(),
};
var lst = new List <IndexedVirtualFile>();
ivf.Children = lst;
var count = br.ReadInt32();
for (int x = 0; x < count; x++)
{
lst.Add(Read(br));
}
return(ivf);
}
