public static void 懒得起名(Stream output, UE_Reader reader, PakEntry entry)
{
if (entry.Encrypted || entry.Position < 0)
{
throw new Exception("把这个判断句复制到 caller");
}
if (entry.Compression == CompressionMethod.None)
{
reader.BaseStream.Position = entry.Position + entry.HeaderSize;
var _R = reader.ReadBytes((int)(entry.UncompressedSize));
output.Write(_R, 0, _R.Length);
}
else if (entry.Compression == CompressionMethod.Zlib)
{
for (int i = 0; i < entry.Blocks.Length; i++)
{
byte[] cnt = ReadBlock(reader, entry, entry.Blocks[i]);
var _R = ZlibStream.UncompressBuffer(cnt);
output.Write(_R, 0, _R.Length);
}
}
else
{
throw new NotImplementedException($"Compression Method {entry.Compression} is not implemented.");
}
}
static byte[] ReadBlock(UE_Reader reader, PakEntry entry, PakCompressedBlock b_info)
{
reader.BaseStream.Position = entry.Position + b_info.CompressedStart;
long length = b_info.CompressedEnd - b_info.CompressedStart;
return(reader.ReadBytes((int)length));
}
public void Feed(PakEntry entry, string pathOverride = null)
{
string path = pathOverride ?? entry.Filename;
int index_slash = path.IndexOf('/');
if (index_slash == 0)
{
throw new Exception($"Empty directory name: {path}");
}
else if (index_slash > 0)
{
string directory_name = path.Substring(0, index_slash);
if (!Directories.TryGetValue(directory_name, out DirectoryValue d_value))
{
d_value = new DirectoryValue();
Directories.Add(directory_name, d_value);
}
d_value.Feed(entry, path.Substring(index_slash + 1));
}
else
{
string file_name = path;
if (Files.ContainsKey(file_name))
{
throw new Exception($"File already exist: {entry.Filename}");
}
Files.Add(file_name, entry);
}
}
public PakIndex(UE_Reader reader, PakFile pak)
{
Pak = pak;
MountPoint = reader.ReadString();
PakEntryCount = reader.ReadInt32();
Entries = new PakEntry[PakEntryCount];
for (int i = 0; i < Entries.Length; i++)
{
Entries[i] = new PakEntry(reader, this);
}
}
static string GetFileInfo(PakEntry entry)
{
PakInfo info = entry.Index.Pak.Info;
var sb = new StringBuilder();
sb.Append($"header_size:{entry.HeaderSize}");
if (entry.Position < 0)
{
sb.Append(" not_present");
return(sb.ToString());
}
// https://docs.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings
string str_size = String.Format(US_NumFormat, "{0:N0}", entry.UncompressedSize);
sb.Append($" size:{str_size}");
if (entry.Encrypted)
{
sb.Append(" encrypted");
}
sb.Append($" compression:{entry.Compression}");
sb.Append($" c_block_count:{entry.PakCompressedBlockCount}");
return(sb.ToString());
}
