From 08016ea4545e3e4bd15d84e948e2ab9e3121aea5 Mon Sep 17 00:00:00 2001 From: morkt Date: Sun, 14 Jan 2018 03:06:22 +0400 Subject: [PATCH] (Legacy): implemented FL4 archives. --- Legacy/Aaru/ArcFL4.cs | 178 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 Legacy/Aaru/ArcFL4.cs diff --git a/Legacy/Aaru/ArcFL4.cs b/Legacy/Aaru/ArcFL4.cs new file mode 100644 index 00000000..d1dfd95c --- /dev/null +++ b/Legacy/Aaru/ArcFL4.cs @@ -0,0 +1,178 @@ +//! \file ArcFL4.cs +//! \date 2018 Jan 13 +//! \brief Aaru resource archive. +// +// Copyright (C) 2018 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 GameRes.Compression; + +// [021025][Aaru] Kokoro... II + +namespace GameRes.Formats.Aaru +{ + [Export(typeof(ArchiveFormat))] + public class Fl4Opener : ArchiveFormat + { + public override string Tag { get { return "FL4/AARU"; } } + public override string Description { get { return "Aaru resource archive"; } } + public override uint Signature { get { return 0x2E344C46; } } // 'FL4.0' + public override bool IsHierarchic { get { return false; } } + public override bool CanWrite { get { return false; } } + + public override ArcFile TryOpen (ArcView file) + { + if (file.View.ReadByte (4) != '0') + return null; + uint data_offset = file.View.ReadUInt16 (8); + uint index_size = file.View.ReadUInt32 (0xA); + long index_offset = file.View.ReadUInt32 (0xE); + if (index_offset + index_size > file.MaxOffset) + return null; + ushort key = file.View.ReadUInt16 (0x16); + ushort flags = file.View.ReadUInt16 (0x18); + var index = file.View.ReadBytes (index_offset, index_size); + int pos = index.ToInt32 (0); + if (pos <= 0) + return null; + var dir = new List(); + while (pos < index.Length) + { + uint offset = index.ToUInt32 (pos); + if (uint.MaxValue == offset) + break; + uint size = index.ToUInt32 (pos+4); + int name_length = index[pos+8]; + pos += 9; + var name = Encodings.cp932.GetString (index, pos, name_length); + var entry = FormatCatalog.Instance.Create (name); + entry.Offset = offset + data_offset; + entry.Size = size; + if (!entry.CheckPlacement (file.MaxOffset)) + return null; + dir.Add (entry); + pos += name_length; + } + if (0 == dir.Count) + return null; + return new ArcFile (file, this, dir); + } + + public override Stream OpenEntry (ArcFile arc, Entry entry) + { + var pent = entry as PackedEntry; + if (null == pent || !pent.IsPacked) + { + if (arc.File.View.AsciiEqual (entry.Offset, "PD")) + { + pent.IsPacked = true; + pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+6); + } + else if (arc.File.View.AsciiEqual (entry.Offset, "RD1.0")) + { + pent.IsPacked = true; + } + if (!pent.IsPacked) + return base.OpenEntry (arc, entry); + } + if (arc.File.View.AsciiEqual (entry.Offset, "PD")) + { + var input = arc.File.CreateStream (entry.Offset+10, entry.Size-10); + return new LzssStream (input); + } + else + { + uint offset = arc.File.View.ReadUInt16 (entry.Offset+6); + var input = arc.File.CreateStream (entry.Offset+offset, entry.Size-offset); + int rle_chunks = arc.File.View.ReadInt32 (entry.Offset+0xA); + return new RlePackedStream (input, rle_chunks); + } + } + } + + internal class RlePackedStream : PackedStream + { + public RlePackedStream (Stream input, int rle_chunks) : base (input) + { + Reader.Chunks = rle_chunks; + } + } + + internal class RleDecompressor : Decompressor + { + IBinaryStream m_input; + + public int Chunks { get; set; } + + public override void Initialize (Stream input) + { + m_input = BinaryStream.FromStream (input, ""); + } + + protected override IEnumerator Unpack () + { + for (int i = 0; i < Chunks; ++i) + { + int ctl = m_input.ReadByte(); + if (-1 == ctl) + yield break; + int count; + if (ctl <= 1) + { + if (0 == ctl) + count = m_input.ReadUInt8(); + else + count = 0x100; + while (count > 0) + { + int avail = Math.Min (count, m_length); + int read = m_input.Read (m_buffer, m_pos, avail); + if (0 == read) + yield break; + count -= read; + m_pos += read; + m_length -= read; + if (0 == m_length) + yield return m_pos; + } + } + else + { + if (3 == ctl) + count = m_input.ReadUInt16(); + else + count = ctl; + byte v = m_input.ReadUInt8(); + while (count --> 0) + { + m_buffer[m_pos++] = v; + if (0 == --m_length) + yield return m_pos; + } + } + } + } + } +}