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(VFF): recognize multi-part archives.
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@ -2,7 +2,7 @@
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//! \date Wed Jun 08 00:27:36 2016
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//! \brief LiveMaker resource archive.
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//
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// Copyright (C) 2016 by morkt
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// Copyright (C) 2016-2018 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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@ -51,13 +51,14 @@ namespace GameRes.Formats.LiveMaker
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{
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uint base_offset = 0;
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ArcView index_file = file;
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ArcView extra_file = null;
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try
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{
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// possible filesystem structure:
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// game.dat -- main archive body
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// game.001 -- [optional] extra part
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// game.ext -- [optional] separate index (could be included into the main body)
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// game.001 -- [optional] extra parts
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// game.002
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// ...
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uint signature = index_file.View.ReadUInt32 (0);
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if (file.Name.HasExtension (".exe")
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@ -88,36 +89,29 @@ namespace GameRes.Formats.LiveMaker
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if (null == dir)
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return null;
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long max_offset = file.MaxOffset;
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for (int i = 0; i < dir.Count; ++i)
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var parts = new List<ArcView>();
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try
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{
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if (!dir[i].CheckPlacement (max_offset))
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for (int i = 1; i < 100; ++i)
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{
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if (extra_file != null)
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{
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// remove entries that don't fit into game.dat+game.001
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int discard = dir.Count - i;
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Trace.WriteLine (string.Format ("{0} entries didn't fit and were discarded", discard), "[vff]");
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dir.RemoveRange (i, discard);
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var ext = string.Format (".{0:D3}", i);
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var part_filename = Path.ChangeExtension (file.Name, ext);
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if (!VFS.FileExists (part_filename))
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break;
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}
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var extra_filename = Path.ChangeExtension (file.Name, ".001");
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if (!VFS.FileExists (extra_filename))
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return null;
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extra_file = VFS.OpenView (extra_filename);
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max_offset += extra_file.MaxOffset;
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if (!dir[i].CheckPlacement (max_offset))
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return null;
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var arc_file = VFS.OpenView (part_filename);
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max_offset += arc_file.MaxOffset;
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parts.Add (arc_file);
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}
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}
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if (null == extra_file)
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catch
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{
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foreach (var part in parts)
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part.Dispose();
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throw;
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}
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if (0 == parts.Count)
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return new ArcFile (file, this, dir);
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return new VffArchive (file, this, dir, extra_file);
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}
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catch
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{
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if (extra_file != null)
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extra_file.Dispose();
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throw;
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return new MultiFileArchive (file, this, dir, parts);
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}
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finally
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{
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@ -128,7 +122,7 @@ namespace GameRes.Formats.LiveMaker
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public override Stream OpenEntry (ArcFile arc, Entry entry)
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{
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var vff = arc as VffArchive;
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var vff = arc as MultiFileArchive;
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Stream input = null;
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if (vff != null)
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input = vff.OpenStream (entry);
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@ -218,43 +212,4 @@ namespace GameRes.Formats.LiveMaker
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m_current = 0;
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}
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}
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internal class VffArchive : ArcFile
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{
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readonly ArcView ExtraFile;
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public VffArchive (ArcView arc, ArchiveFormat impl, ICollection<Entry> dir, ArcView extra_file)
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: base (arc, impl, dir)
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{
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ExtraFile = extra_file;
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}
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internal Stream OpenStream (Entry entry)
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{
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if (entry.Offset < File.MaxOffset && entry.Offset+entry.Size > File.MaxOffset)
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{
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var first_part = File.View.ReadBytes (entry.Offset, entry.Size);
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var second_part = ExtraFile.CreateStream (0, entry.Size - (uint)first_part.Length);
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return new PrefixStream (first_part, second_part);
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}
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else if (entry.Offset >= File.MaxOffset)
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{
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return ExtraFile.CreateStream (entry.Offset, entry.Size);
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}
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else
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return File.CreateStream (entry.Offset, entry.Size);
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}
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bool _vff_disposed = false;
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protected override void Dispose (bool disposing)
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{
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if (!_vff_disposed)
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{
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if (disposing && ExtraFile != null)
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ExtraFile.Dispose();
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_vff_disposed = true;
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}
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base.Dispose (disposing);
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}
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}
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}
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