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properly implement Merscom DPK data format

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This commit is contained in:
Michael Becker 2022-04-11 19:14:24 -04:00
parent e585c425b8
commit 7899dbc7ce
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GPG Key ID: 98C333A81F18C22C
3 changed files with 56 additions and 12 deletions
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25
Plugins/UniversalEditor.Plugins.FileSystem/Associations/Merscom/DPK.uexml Normal file
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@ -0,0 +1,25 @@
<?xml version="1.0" encoding="utf-8" ?>
<UniversalEditor Version="4.0">
<Associations>
<Association>
<Filters>
<Filter HintComparison="MagicThenFilter" ContentType="application/x-merscom-dpk" Title="Merscom data package (DPK) archive">
<FileNameFilters>
<FileNameFilter>*.dpk</FileNameFilter>
</FileNameFilters>
<MagicByteSequences>
<MagicByteSequence>
<MagicByte Type="String">DPK4</MagicByte>
</MagicByteSequence>
</MagicByteSequences>
</Filter>
</Filters>
<ObjectModels>
<ObjectModel TypeName="UniversalEditor.ObjectModels.FileSystem.FileSystemObjectModel" />
</ObjectModels>
<DataFormats>
<DataFormat TypeName="UniversalEditor.DataFormats.FileSystem.Merscom.DPKDataFormat" />
</DataFormats>
</Association>
</Associations>
</UniversalEditor>

41
Plugins/UniversalEditor.Plugins.FileSystem/DataFormats/FileSystem/Merscom/DPKDataFormat.cs
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@ -28,6 +28,7 @@ namespace UniversalEditor.DataFormats.FileSystem.Merscom
/// <summary>
/// Provides a <see cref="DataFormat" />for manipulating archives in Merscom DPK format.
/// </summary>
[ImplementationStatus(DataFormatImplementationStatus.Load)]
public class DPKDataFormat : DataFormat
{
private static DataFormatReference _dfr;
@ -53,27 +54,43 @@ namespace UniversalEditor.DataFormats.FileSystem.Merscom
if (DPK4 != "DPK4")
throw new InvalidDataFormatException();
uint u1 = br.ReadUInt32();
uint u2 = br.ReadUInt32();
uint archiveLength = br.ReadUInt32();
uint tocLength = br.ReadUInt32();
uint u3 = br.ReadUInt32();
uint u4 = br.ReadUInt32();
uint uFileCount = br.ReadUInt32();
for (int i = 0; i < uFileCount; i++)
for (int i = 0; i < u3; i++)
{
br.SeekUntilFirstNonNull();
uint u4 = br.ReadUInt32();
uint decompressedLength = br.ReadUInt32();
uint compressedLength = br.ReadUInt32(); // 371 39325
uint offset = br.ReadUInt32(); // 292196 292567
uint u6 = br.ReadUInt32();
uint u7 = br.ReadUInt32();
string nam = br.ReadNullTerminatedString(); // action.accfg
br.Align(4);
string nam = br.ReadNullTerminatedString();
File file = fsom.AddFile(nam);
ushort u8 = br.ReadUInt16();
uint u9 = br.ReadUInt32();
uint u10 = br.ReadUInt32();
file.Properties["compressedLength"] = compressedLength;
file.Properties["offset"] = offset;
file.Size = decompressedLength;
file.DataRequest += File_DataRequest;
}
}
void File_DataRequest(object sender, DataRequestEventArgs e)
{
File file = (File)sender;
uint compressedLength = (uint)file.Properties["compressedLength"];
uint offset = (uint)file.Properties["offset"];
Accessor.Reader.Seek(offset, SeekOrigin.Begin);
byte[] compressedData = Accessor.Reader.ReadBytes(compressedLength);
byte[] decompressedData = Compression.CompressionModule.FromKnownCompressionMethod(Compression.CompressionMethod.Zlib).Decompress(compressedData);
e.Data = decompressedData;
}
protected override void SaveInternal(ObjectModel objectModel)
{
throw new NotImplementedException();

2
Plugins/UniversalEditor.Plugins.FileSystem/UniversalEditor.Plugins.FileSystem.csproj
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@ -306,6 +306,7 @@
<Folder Include="Associations\KenSilverman\" />
<Folder Include="Associations\ElectronicArts\" />
<Folder Include="Associations\Ultra3D\" />
<Folder Include="Associations\Merscom\" />
</ItemGroup>
<ItemGroup>
<EmbeddedResource Include="Associations\7Zip.uexml" />
@ -396,6 +397,7 @@
<EmbeddedResource Include="Associations\Ultra3D\RBX.uexml" />
<EmbeddedResource Include="Associations\Ultra3D\TBV.uexml" />
<EmbeddedResource Include="DataFormats\FileSystem\StuffIt\StuffItDataFormat.uexml" />
<EmbeddedResource Include="Associations\Merscom\DPK.uexml" />
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.