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feat: support NPK3

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scientificworld
2026-01-16 16:30:56 +08:00
parent 7355ead1f6
commit 3f22faca3d
1 changed files with 21 additions and 3 deletions
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24
ArcFormats/NitroPlus/ArcNPK.cs
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@@ -57,11 +57,13 @@ namespace GameRes.Formats.NitroPlus
internal class NpkArchive : ArcFile
{
public readonly Aes Encryption;
public readonly int Version;
public NpkArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, Aes enc)
public NpkArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, Aes enc, int version)
: base (arc, impl, dir)
{
Encryption = enc;
Version = version;
}
#region IDisposable Members
@@ -100,8 +102,14 @@ namespace GameRes.Formats.NitroPlus
set { DefaultScheme = (Npk2Scheme)value; }
}
public NpkOpener ()
{
Signatures = new uint[] { 0x324B504E, 0x334B504E };
}
public override ArcFile TryOpen (ArcView file)
{
int version = file.View.ReadByte (3);
int count = file.View.ReadInt32 (0x18);
if (!IsSaneCount (count))
return null;
@@ -124,7 +132,7 @@ namespace GameRes.Formats.NitroPlus
var dir = ReadIndex (index, count, file.MaxOffset);
if (null == dir)
return null;
var arc = new NpkArchive (file, this, dir, aes);
var arc = new NpkArchive (file, this, dir, aes, version);
aes = null; // object ownership passed to NpkArchive, don't dispose
return arc;
}
@@ -481,6 +489,7 @@ namespace GameRes.Formats.NitroPlus
{
ArcView m_file;
Aes m_encryption;
int m_version;
IEnumerator<NpkSegment> m_segment;
Stream m_stream;
bool m_eof = false;
@@ -493,6 +502,7 @@ namespace GameRes.Formats.NitroPlus
{
m_file = arc.File;
m_encryption = arc.Encryption;
m_version = arc.Version;
m_segment = entry.Segments.GetEnumerator();
NextSegment();
}
@@ -511,7 +521,15 @@ namespace GameRes.Formats.NitroPlus
var decryptor = m_encryption.CreateDecryptor();
m_stream = new InputCryptoStream (m_stream, decryptor);
if (segment.IsCompressed)
m_stream = new DeflateStream (m_stream, CompressionMode.Decompress);
switch (m_version)
{
case 2:
m_stream = new DeflateStream (m_stream, CompressionMode.Decompress);
break;
case 3:
m_stream = new ZstdNet.DecompressionStream (m_stream);
break;
}
}
public override int Read (byte[] buffer, int offset, int count)