implemented CMP archives, BGD and CGD images.

2026-06-18 08:54:38 +08:00 · 2017-01-16 16:51:41 +04:00
parent cf1ce3c889
commit a95fca5d68
5 changed files with 400 additions and 0 deletions
--- a/ArcFormats/GameSystem/ArcCMP.cs
+++ b/ArcFormats/GameSystem/ArcCMP.cs
@@ -0,0 +1,120 @@
+//! \file       ArcCMP.cs
+//! \date       Sun Jan 15 15:44:39 2017
+//! \brief      'Game System' engine resource archive.
+//
+// Copyright (C) 2017 by morkt
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Text;
+using GameRes.Utility;
+
+namespace GameRes.Formats.GameSystem
+{
+    [Export(typeof(ArchiveFormat))]
+    public class CmpOpener : ArchiveFormat
+    {
+        public override string         Tag { get { return "CMP"; } }
+        public override string Description { get { return "'GameSystem' engine resource archive"; } }
+        public override uint     Signature { get { return 0; } }
+        public override bool  IsHierarchic { get { return true; } }
+        public override bool      CanWrite { get { return false; } }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            if (file.MaxOffset <= 8 || !file.View.AsciiEqual (file.MaxOffset-8, "PACK"))
+                return null;
+            uint index_offset = file.View.ReadUInt32 (file.MaxOffset-4);
+            if (index_offset >= file.MaxOffset)
+                return null;
+            int index_size = file.View.ReadInt32 (index_offset);
+            var index = new byte[index_size];
+            using (var input = file.CreateStream (index_offset+4))
+                LzUnpack (input, index);
+            var dir = new List<Entry>();
+            int index_pos = 0;
+            uint offset = LittleEndian.ToUInt32 (index, index_pos);
+            while (index_pos < index.Length)
+            {
+                index_pos += 4;
+                int name_length = index[index_pos];
+                if (0 == name_length)
+                    break;
+                bool is_packed = index[index_pos+1] != 0;
+                index_pos += 6;
+                name_length *= 2;
+                var name = Encoding.Unicode.GetString (index, index_pos, name_length);
+                index_pos += name_length;
+                uint next_offset = LittleEndian.ToUInt32 (index, index_pos);
+                var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
+                entry.Offset = offset;
+                entry.Size = next_offset - offset;
+                entry.IsPacked = is_packed;
+                if (!entry.CheckPlacement (index_offset))
+                    return null;
+                dir.Add (entry);
+                offset = next_offset;
+            }
+            if (0 == dir.Count)
+                return null;
+            return new ArcFile (file, this, dir);
+        }
+
+        void LzUnpack (IBinaryStream input, byte[] output)
+        {
+            int dst = 0;
+            while (dst < output.Length)
+            {
+                byte ctl = input.ReadUInt8();
+                if (0 != (ctl & 0x80))
+                {
+                    int num = input.ReadUInt8() + (ctl << 8);
+                    int offset = num & 0x7FF;
+                    int count = Math.Min (((num >> 10) & 0x1E) + 2, output.Length - dst);
+                    Binary.CopyOverlapped (output, dst-offset-1, dst, count);
+                    dst += count;
+                }
+                else
+                {
+                    int count = Math.Min (ctl + 1, output.Length - dst);
+                    input.Read (output, dst, count);
+                    dst += count;
+                }
+            }
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            var pent = entry as PackedEntry;
+            if (null == pent || !pent.IsPacked)
+                return base.OpenEntry (arc, entry);
+            if (0 == pent.UnpackedSize)
+                pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset);
+            var data = new byte[pent.UnpackedSize];
+            using (var input = arc.File.CreateStream (entry.Offset+4, entry.Size-4))
+                LzUnpack (input, data);
+            return new BinMemoryStream (data, entry.Name);
+        }
+    }
+}