From 593f7ecbcdf04fd40dffed6466d9fc1962f7c80f Mon Sep 17 00:00:00 2001
From: Rei <asterma@yahoo.com>
Date: Wed, 13 Nov 2019 23:46:03 -0500
Subject: [PATCH] add common file extensions for gfpak export

---
 SPICA.WinForms/FrmMain.cs      |  2 +-
 SPICA/Formats/GFLX/GFLXPack.cs | 18 +++++++++++++++++-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/SPICA.WinForms/FrmMain.cs b/SPICA.WinForms/FrmMain.cs
index a003a5e3..d7515b09 100644
--- a/SPICA.WinForms/FrmMain.cs
+++ b/SPICA.WinForms/FrmMain.cs
@@ -392,7 +392,7 @@ private void ToolButtonExport_Click(object sender, EventArgs e)
         private void ExtractGfpak(string pak, string outPath) {
             GFLXPack gfpak = new GFLXPack(pak);
             for (int i = 0; i < gfpak.FileCnt; i++) {
-                using (BinaryWriter bw = new BinaryWriter(new FileStream(outPath + "/" + gfpak.GetName(i) + ".bin", FileMode.CreateNew))) {
+                using (BinaryWriter bw = new BinaryWriter(new FileStream(outPath + "/" + gfpak.GetName(i), FileMode.CreateNew))) {
                     byte[] file = gfpak.GetFile(i);
                     bw.Write(file);
                     bw.Close();
diff --git a/SPICA/Formats/GFLX/GFLXPack.cs b/SPICA/Formats/GFLX/GFLXPack.cs
index fe4628c8..e8b96720 100644
--- a/SPICA/Formats/GFLX/GFLXPack.cs
+++ b/SPICA/Formats/GFLX/GFLXPack.cs
@@ -39,11 +39,27 @@ public GFLXPack(string path)
                     UInt32 zsize = br.ReadUInt32();
                     br.ReadUInt32(); //dummy
                     UInt64 offset = br.ReadUInt64();
-                    Names.Add(offset.ToString("X8"));
                     br.BaseStream.Position = (long)offset;
                     byte[] compData = br.ReadBytes((int)zsize);
                     byte[] decompData = new byte[size];
                     var decoded = LZ4Codec.Decode(compData, 0, compData.Length, decompData, 0, decompData.Length);
+                    string ext = string.Empty;
+                    switch (BitConverter.ToUInt32(decompData, 0))
+                    {
+                        case 0x58544E42:
+                            ext = ".btnx";
+                            break;
+                        case 0x48534E42:
+                            ext = ".bnsh";
+                            break;
+                        case 0x20:
+                            ext = ".gfmdl";
+                            break;
+                        default:
+                            ext = ".bin";
+                            break;
+                    }
+                    Names.Add(offset.ToString("X8") + ext);
                     Files.Add(decompData);
                 }
             }