bunch of stuff.

2026-07-08 01:30:18 +08:00 · 2023-08-24 01:33:50 +04:00
parent ea096c52ef
commit 77fde27d26
119 changed files with 11078 additions and 619 deletions
--- a/ArcFormats/Adobe/ArcAIR.cs
+++ b/ArcFormats/Adobe/ArcAIR.cs
@@ -0,0 +1,118 @@
+//! \file       ArcAIR.cs
+//! \date       2023 Aug 22
+//! \brief      Adobe AIR resource archive.
+//
+// Copyright (C) 2023 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 GameRes.Utility;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.IO.Compression;
+using System.Text;
+
+namespace GameRes.Formats.Adobe
+{
+    [Export(typeof(ArchiveFormat))]
+    public class DatOpener : ArchiveFormat
+    {
+        public override string         Tag { get => "DAT/AIR"; }
+        public override string Description { get => "Adobe AIR resource archive"; }
+        public override uint     Signature { get => 0; }
+        public override bool  IsHierarchic { get => false; }
+        public override bool      CanWrite { get => false; }
+
+        public override ArcFile TryOpen (ArcView file)
+        {
+            uint index_pos = Binary.BigEndian (file.View.ReadUInt32 (0));
+            if (index_pos >= file.MaxOffset || 0 == index_pos || file.MaxOffset > 0x40000000)
+                return null;
+            uint index_size = (uint)(file.MaxOffset - index_pos);
+            if (index_size > 0x100000) // arbitrary max size for compressed index
+                return null;
+            using (var input = file.CreateStream (index_pos, index_size))
+            using (var unpacked = new DeflateStream (input, CompressionMode.Decompress))
+            using (var index = new BinaryStream (unpacked, file.Name))
+            {
+                if (0x0A != index.ReadUInt8() ||
+                    0x0B != index.ReadUInt8() ||
+                    0x01 != index.ReadUInt8())
+                    return null;
+                var name_buffer = new byte[0x80];
+                var dir = new List<Entry>();
+                while (index.PeekByte() != -1)
+                {
+                    int length = index.ReadUInt8();
+                    if (0 == (length & 1))
+                        return null;
+                    length >>= 1;
+                    if (0 == length)
+                        break;
+                    index.Read (name_buffer, 0, length);
+                    var name = Encoding.UTF8.GetString (name_buffer, 0, length);
+                    if (0x09 != index.ReadUInt8() ||
+                        0x05 != index.ReadUInt8() ||
+                        0x01 != index.ReadUInt8())
+                        return null;
+                    if (0x04 != index.ReadUInt8()) // invalid number signature
+                        return null;
+                    uint offset = ReadInteger (index);
+                    if (0x04 != index.ReadUInt8())
+                        return null;
+                    uint size = ReadInteger (index);
+                    var entry = Create<PackedEntry> (name);
+                    entry.Offset = offset;
+                    entry.Size   = size;
+                    if (!entry.CheckPlacement (file.MaxOffset))
+                        return null;
+                    dir.Add (entry);
+                }
+                return new ArcFile (file, this, dir);
+            }
+        }
+
+        public override Stream OpenEntry (ArcFile arc, Entry entry)
+        {
+            if (0 == entry.Size)
+                return Stream.Null;
+            var input = arc.File.CreateStream (entry.Offset, entry.Size);
+            return new DeflateStream (input, CompressionMode.Decompress);
+        }
+
+        internal static uint ReadInteger (IBinaryStream input)
+        {
+            uint u = input.ReadUInt8();
+            if (u < 0x80)
+                return u;
+            u = (u & 0x7F) << 7;
+            uint b = input.ReadUInt8();
+            if (b < 0x80)
+                return u | b;
+            u = (u | b & 0x7F) << 7;
+            b = input.ReadUInt8();
+            if (b < 0x80)
+                return u | b;
+            u = (u | b & 0x7F) << 8;
+            return u | input.ReadUInt8();
+        }
+    }
+}