Brought spec up to date, improvements to stability

UnitTest/Program.cs

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+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+using RobloxFiles.DataTypes;
+
+namespace RobloxFiles.UnitTest
+{
+    static class Program
+    {
+        const string pattern = "\\d+$";
+
+        static void PrintTreeImpl(Instance inst, int stack = 0)
+        {
+            string padding = "";
+            string extension = "";
+
+            for (int i = 0; i < stack; i++)
+                padding += '\t';
+
+            switch (inst.ClassName)
+            {
+                case "Script":
+                    extension = ".server.lua";
+                    break;
+                case "LocalScript":
+                    extension = ".client.lua";
+                    break;
+                case "ModuleScript":
+                    extension = ".lua";
+                    break;
+                default: break;
+            }
+
+            Console.WriteLine($"{padding}{inst.Name}{extension}");
+
+            var children = inst
+                .GetChildren()
+                .ToList();
+
+            children.ForEach(child => PrintTreeImpl(child, stack + 1));
+        }
+
+        static void PrintTree(string path)
+        {
+            Console.WriteLine("Opening file...");
+            RobloxFile target = RobloxFile.Open(path);
+
+            foreach (Instance child in target.GetChildren())
+                PrintTreeImpl(child);
+
+            Debugger.Break();
+        }
+
+        static void CountAssets(string path)
+        {
+            Console.WriteLine("Opening file...");
+            RobloxFile target = RobloxFile.Open(path);
+
+            var workspace = target.FindFirstChildOfClass<Workspace>();
+            var assets = new HashSet<string>();
+
+            if (workspace == null)
+            {
+                Console.WriteLine("No workspace found!");
+                Debugger.Break();
+
+                return;
+            }
+
+            foreach (Instance inst in workspace.GetDescendants())
+            {
+                var instPath = inst.GetFullName();
+                var props = inst.Properties;
+
+                foreach (var prop in props)
+                {
+                    var propName = prop.Key;
+                    var content = prop.Value.CastValue<Content>();
+
+                    if (content != null)
+                    {
+                        string url = content.Url.Trim();
+
+                        var id = Regex
+                            .Match(url, pattern)?
+                            .Value;
+
+                        if (id != null && id.Length > 5)
+                            url = "rbxassetid://" + id;
+
+                        if (url.Length > 0 && !assets.Contains(url))
+                        {
+                            Console.WriteLine($"[{url}] at {instPath}.{propName}");
+                            assets.Add(url);
+                        }
+                    }
+                }
+            }
+
+            Console.WriteLine("Done! Press any key to continue...");
+            Console.Read();
+        }
+
+        [STAThread]
+        static void Main(string[] args)
+        {
+            if (args.Length > 0)
+            {
+                string path = args[0];
+                PrintTree(path);
+            }
+            else
+            {
+                RobloxFile bin = RobloxFile.Open(@"Files\Binary.rbxl");
+                RobloxFile xml = RobloxFile.Open(@"Files\Xml.rbxlx");
+
+                Console.WriteLine("Files opened! Pausing execution for debugger analysis...");
+                Debugger.Break();
+
+                bin.Save(@"Files\Binary_SaveTest.rbxl");
+                xml.Save(@"Files\Xml_SaveTest.rbxlx");
+                
+                Console.WriteLine("Files saved! Pausing execution for debugger analysis...");
+                Debugger.Break();
+            }
+        }
+    }
+}

UnitTest/RobloxFileFormat.UnitTest.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <None Remove="Files\Binary.rbxl" />
+    <None Remove="Files\CoreScripts.rbxm" />
+    <None Remove="Files\Xml.rbxlx" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="Files\Binary.rbxl">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Files\Xml.rbxlx">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </EmbeddedResource>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Folder Include="Properties\" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\RobloxFileFormat.csproj" />
+  </ItemGroup>
+
+</Project>