TagTool.Cache.TagCache.BuildTagDescription C# (CSharp) Method

        private static TagData BuildTagDescription(Stream stream, TagInstance tag, out uint dataOffset)
        {
            var data = new TagData
            {
                Group = tag.Group,
                MainStructOffset = tag.MainStructOffset,
            };
            foreach (var dependency in tag.Dependencies)
                data.Dependencies.Add(dependency);

            // Read pointer fixups
            var reader = new BinaryReader(stream);
            foreach (var pointerOffset in tag.PointerOffsets)
            {
                reader.BaseStream.Position = tag.HeaderOffset + pointerOffset;
                data.PointerFixups.Add(new TagPointerFixup
                {
                    WriteOffset = pointerOffset,
                    TargetOffset = tag.PointerToOffset(reader.ReadUInt32()),
                });
            }

            // Find the start of the tag's data by finding the offset of the first block which is pointed to by something
            // We CAN'T just calculate a header size here because we don't know for sure if there's padding and how big it is
            var startOffset = tag.MainStructOffset;
            foreach (var fixup in data.PointerFixups)
                startOffset = Math.Min(startOffset, Math.Min(fixup.WriteOffset, fixup.TargetOffset));

            // Now convert all offsets into relative ones
            foreach (var fixup in data.PointerFixups)
            {
                fixup.WriteOffset -= startOffset;
                fixup.TargetOffset -= startOffset;
            }
            data.ResourcePointerOffsets.AddRange(tag.ResourcePointerOffsets.Select(offset => offset - startOffset));
            data.MainStructOffset -= startOffset;
            dataOffset = startOffset;
            return data;
        }