mirror of
https://github.com/crskycode/GARbro.git
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130 lines
5.4 KiB
C#
130 lines
5.4 KiB
C#
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//! \file ArcGRP.cs
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//! \date Thu Apr 06 16:41:59 2017
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//! \brief ExHIBIT audio resource archive.
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//
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// Copyright (C) 2017 by morkt
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to
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// deal in the Software without restriction, including without limitation the
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// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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// sell copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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// IN THE SOFTWARE.
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//
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using System;
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using System.Collections.Generic;
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using System.ComponentModel.Composition;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace GameRes.Formats.ExHibit
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{
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[Export(typeof(ArchiveFormat))]
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public class GrpOpener : ArchiveFormat
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{
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public override string Tag { get { return "GRP/EXHIBIT"; } }
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public override string Description { get { return "ExHIBIT engine audio resource archive"; } }
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public override uint Signature { get { return 0; } }
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public override bool IsHierarchic { get { return false; } }
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public override bool CanWrite { get { return false; } }
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static readonly Regex s_ResNameRe = new Regex (@"res(\d+)\.grp$", RegexOptions.IgnoreCase);
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public override ArcFile TryOpen (ArcView file)
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{
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var match = s_ResNameRe.Match (file.Name);
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if (!match.Success || file.View.AsciiEqual (0, "AiFS"))
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return null;
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var digits = match.Groups[1];
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int arc_num = UInt16.Parse (digits.Value);
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int toc_num = arc_num - 1;
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int arc_index = 1; // number by which archive is referenced within toc file
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// look for toc file
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ArcView toc_file = null;
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var toc_name_sb = new StringBuilder (file.Name.Length);
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while (toc_num >= 0)
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{
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toc_name_sb.Clear();
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toc_name_sb.Append (file.Name);
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toc_name_sb.Remove (digits.Index, digits.Length);
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toc_name_sb.Insert (digits.Index, toc_num.ToString ("D4"));
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var toc_name = toc_name_sb.ToString();
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if (!VFS.FileExists (toc_name))
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return null;
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toc_file = VFS.OpenView (toc_name);
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if (toc_file.View.AsciiEqual (0, "AiFS"))
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break;
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toc_file.Dispose();
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toc_file = null;
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toc_num--;
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arc_index++;
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}
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if (null == toc_file)
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return null;
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using (toc_file)
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{
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int res_count = toc_file.View.ReadInt32 (0xC);
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if (res_count < arc_index)
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return null;
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uint index_offset = 0x10;
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// find archive reference within toc file
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bool arc_found = false;
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for (int i = 0; i < res_count && index_offset < toc_file.MaxOffset; ++i)
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{
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if (toc_file.View.ReadInt32 (index_offset) == arc_index)
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{
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arc_found = true;
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break;
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}
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uint entries = toc_file.View.ReadUInt32 (index_offset+0xC);
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index_offset += 0x10 + entries * 8;
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}
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if (!arc_found)
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return null;
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int count = toc_file.View.ReadInt32 (index_offset+0xC);
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if (!IsSaneCount (count))
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return null;
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int start_index = toc_file.View.ReadInt32 (index_offset+4);
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index_offset += 0x10;
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var dir = new List<Entry> (count);
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for (int i = 0; i < count; ++i)
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{
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uint offset = toc_file.View.ReadUInt32 (index_offset);
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uint size = toc_file.View.ReadUInt32 (index_offset+4);
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if (size != 0)
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{
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var entry = new Entry {
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Name = string.Format ("{0:D5}.ogg", start_index+i),
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Type = "audio",
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Offset = offset,
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Size = size,
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};
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entry.Offset = toc_file.View.ReadUInt32 (index_offset);
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if (!entry.CheckPlacement (file.MaxOffset))
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return null;
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dir.Add (entry);
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}
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index_offset += 8;
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}
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if (0 == dir.Count)
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return null;
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return new ArcFile (file, this, dir);
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}
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}
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}
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}
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