XbfKit

for decompiling and compiling versioned XBF documents.

It supports XBF1 and XBF2/XBF2.1 documents, including the WUX and MUX dialects where applicable. The library exposes a semantic XAML object model so a document can be decompiled, edited, and recompiled.

XbfKit is used in a PRI file viewer, MrmTool, by @ahmed505.

Usage

> dotnet add package XbfKit

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For a real file-to-file conversion, use the overload that accepts XbfCompilationOptions and the decompilation formatting options:

using XbfKit;

const string inputPath = "Page.xaml";
const string xbfPath = "Page.xbf";
const string outputPath = "Page.decompiled.xaml";

using FileStream output = File.Create(xbfPath);
XbfCompiler.Compile(File.ReadAllText(inputPath), output, new XbfCompilationOptions());

using FileStream input = File.OpenRead(xbfPath);
var decompiled = XbfDecompiler.Decompile(input, XbfDialect.WUX, XbfDecompilationOptions());
File.WriteAllText(outputPath, decompiled);

To access the validated in-memory representation directly, use the reader and writer in XbfKit.IO:

using XbfKit;
using XbfKit.IO;

using FileStream input = File.OpenRead("Page.xbf");
var document = XbfDocumentReader.Read(input);

using FileStream output = File.Create("Page.copy.xbf");
XbfDocumentWriter.Write(document, output);

The supported format and dialect combinations are:

• XBF1 with XbfDialect.WUX
• XBF2 or XBF2.1 with XbfDialect.WUX or XbfDialect.MUX

WUX refers to Windows.UI.Xaml; MUX refers to Microsoft.UI.Xaml. The dialect must be supplied when decompiling because XBF2 does not retain enough information to distinguish those trusted framework schemas.