Some progress on the delete function.

SrcMod/Shell/Interop/Kernel32.cs

@@ -2,10 +2,17 @@
 
 internal static partial class Kernel32
 {
+    [LibraryImport("kernel32.dll", SetLastError = true)]
+    [return: MarshalAs(UnmanagedType.Bool)]
+    public static partial bool GetConsoleScreenBufferInfo(nint hConsoleOutput, out ConsoleScreenBufferInfo lpConsoleScreenBufferInfo);
+
+    [LibraryImport("kernel32.dll", SetLastError = true)]
+    public static partial nint GetConsoleWindow();
+
     [LibraryImport("kernel32.dll", SetLastError = true)]
     public static partial uint GetFinalPathNameByHandleA(nint hFile, [MarshalAs(UnmanagedType.LPTStr)] string lpszFilePath,
         uint cchFilePath, uint dwFlags);
 
-    [LibraryImport("kernel32.dll")]
+    [LibraryImport("kernel32.dll", SetLastError = true)]
     public static partial nuint GlobalSize(nint hPtr);
 }

SrcMod/Shell/Interop/ObjectModels/ConsoleScreenBufferInfo.cs

@@ -0,0 +1,15 @@
+namespace SrcMod.Shell.Interop.ObjectModels;
+
+[StructLayout(LayoutKind.Sequential)]
+internal struct ConsoleScreenBufferInfo
+{
+    [MarshalAs(UnmanagedType.LPStruct)]
+    public Coord dwSize;
+    [MarshalAs(UnmanagedType.LPStruct)]
+    public Coord dwCursorPosition;
+    public int wAttributes;
+    [MarshalAs(UnmanagedType.LPStruct)]
+    public SmallRect srWindow;
+    [MarshalAs(UnmanagedType.LPStruct)]
+    public Coord dwMaximumWindowSize;
+}

SrcMod/Shell/Interop/ObjectModels/Coord.cs

@@ -0,0 +1,8 @@
+namespace SrcMod.Shell.Interop.ObjectModels;
+
+[StructLayout(LayoutKind.Sequential)]
+internal struct Coord
+{
+    public short X;
+    public short Y;
+}

SrcMod/Shell/Interop/ObjectModels/SmallRect.cs

@@ -0,0 +1,10 @@
+namespace SrcMod.Shell.Interop.ObjectModels;
+
+[StructLayout(LayoutKind.Sequential)]
+internal struct SmallRect
+{
+    public short Left;
+    public short Top;
+    public short Right;
+    public short Bottom;
+}

SrcMod/Shell/Miscellaneous/GlobalUsings.cs

@@ -6,6 +6,7 @@ global using SharpCompress.Archives.SevenZip;
 global using SharpCompress.Readers;
 global using SrcMod.Shell.Extensions;
 global using SrcMod.Shell.Interop;
+global using SrcMod.Shell.Interop.ObjectModels;
 global using SrcMod.Shell.Modules;
 global using SrcMod.Shell.Modules.ObjectModels;
 global using SrcMod.Shell.ObjectModels;

SrcMod/Shell/Modules/Valve/VkvModule.cs

@@ -0,0 +1,665 @@
+namespace SrcMod.Shell.Modules.Valve;
+
+[Module("vkv")]
+public static class VkvModule
+{
+    [Command("create")]
+    [CanCancel(false)]
+    public static void CreateVkv(string path)
+    {
+        if (File.Exists(path)) throw new($"File already exists at \"{path}\". Did you mean to run \"vkv edit\"?");
+
+        VkvNode parentNode = new VkvTreeNode()
+        {
+            { "key", new VkvSingleNode("value") }
+        };
+        string parentNodeName = "tree";
+
+        VkvModifyWhole(ref parentNode, ref parentNodeName);
+
+        try
+        {
+            FileStream fs = new(path, FileMode.Create);
+            SerializeVkv.Serialize(fs, parentNode, parentNodeName);
+        }
+        catch (Exception ex)
+        {
+#if DEBUG
+            throw;
+#else
+            throw new($"Error serializing result to file: {ex.Message}");
+#endif
+        }
+    }
+
+    [Command("edit")]
+    [CanCancel(false)]
+    public static void EditVkv(string path)
+    {
+        if (!File.Exists(path)) throw new($"No file exists at \"{path}\". Did you mean to run \"vkv create\"?");
+
+        VkvNode? parentNode;
+        string parentNodeName = string.Empty;
+        try
+        {
+            FileStream fs = new(path, FileMode.Open);
+            parentNode = SerializeVkv.Deserialize(fs, out parentNodeName);
+
+            if (parentNode is null) throw new("Deserialized VKV node is null.");
+        }
+        catch (Exception ex)
+        {
+#if DEBUG
+            throw;
+#else
+            throw new($"Error parsing file to Valve KeyValues format: {ex.Message}");
+#endif
+        }
+
+        VkvModifyWhole(ref parentNode, ref parentNodeName);
+
+        try
+        {
+            FileStream fs = new(path, FileMode.Create);
+            SerializeVkv.Serialize(fs, parentNode, parentNodeName);
+        }
+        catch (Exception ex)
+        {
+#if DEBUG
+            throw;
+#else
+            throw new($"Error serializing result to file: {ex.Message}");
+#endif
+        }
+    }
+
+#region The VKV Modification System
+    private static void VkvModifyWhole(ref VkvNode rootNode, ref string rootNodeName)
+    {
+        // Generate reference context for passing to the modification methods.
+        VkvModifyContext context = new()
+        {
+            displayLines = VkvModifyGetLines(rootNode, rootNodeName, 0),
+            rootNode = rootNode,
+            rootNodeName = rootNodeName
+        };
+
+        // Make an initial printing of the vkv node.
+        VkvModifyPrintAll(ref context, false);
+
+        // Start modifying the root node.
+        VkvTreeNode? nullNode = null;
+        int nullInt = default;
+        VkvModifyNode(ref rootNode, ref rootNodeName, ref context, true, ref nullNode, ref nullInt);
+
+        // Done editing, let's reset the cursor position and exit the command.
+        Console.ResetColor();
+        Console.SetCursorPosition(0, context.startingCursor + context.displayLines.Count);
+    }
+
+    private static VkvModifyOption VkvModifyNode(ref VkvNode node, ref string nodeName,
+        ref VkvModifyContext context, bool isGlobal, ref VkvTreeNode? parentNode, ref int parentSubIndex)
+    {
+#if DEBUG
+        string add = $" {nodeName}";
+        Console.Title += add;
+#endif
+
+        int subIndex = -1; // Represents the index of the sub node currently being modified.
+        // If the variable is set to -1, it represents the title.
+
+        VkvSingleNode? single = node as VkvSingleNode;
+        VkvTreeNode? tree = node as VkvTreeNode;
+
+        VkvModifyOption? option = null;
+        VkvModifySelection selection = VkvModifySelection.Name;
+        while (true)
+        {
+            // Color the display white, wait for a key, then reset and handle the key press.
+            string line = context.displayLines[context.lineIndex];
+
+            Console.SetCursorPosition(0, context.startingCursor + context.lineIndex);
+            Console.Write(Whitify(line, selection));
+            Console.ResetColor();
+
+            if (!option.HasValue) option = Console.ReadKey(true).Key switch
+            {
+                ConsoleKey.DownArrow => VkvModifyOption.IncSubIndex,
+                ConsoleKey.UpArrow => VkvModifyOption.DecSubIndex,
+                ConsoleKey.RightArrow => VkvModifyOption.RShiftMode,
+                ConsoleKey.LeftArrow => VkvModifyOption.LShiftMode,
+                ConsoleKey.Enter => VkvModifyOption.Use,
+                ConsoleKey.Escape => VkvModifyOption.ExitAll,
+                _ => VkvModifyOption.Nothing
+            };
+
+            Console.CursorLeft = 0; // This is assuming the cursor hasn't moved, which it shouldn't.
+            Console.Write(line + new string(' ', Console.WindowWidth - line.Length));
+
+            // Now we handle the key press.
+            switch (option)
+            {
+                case VkvModifyOption.IncSubIndex:
+                    if (tree is not null)
+                    {
+                        subIndex++;
+
+                        if (subIndex == 0)
+                        {
+                            // We just shifted down from the title to the first sub node.
+                            // We need to overlook the next line, '{'.
+
+                            context.lineIndex += 2;
+
+                            // Now we also need to start modification of the first sub node.
+                            KeyValuePair<string, VkvNode>? subNode = tree[subIndex];
+                            if (subNode is not null)
+                            {
+                                string subNodeKey = subNode.Value.Key;
+                                VkvNode subNodeValue = subNode.Value.Value;
+                                VkvModifyOption status = 
+                                    VkvModifyNode(ref subNodeValue, ref subNodeKey, ref context, false, ref tree, ref subIndex);
+
+                                // Update the parent node with our modified sub node.
+                                tree![subIndex] = new(subNodeKey, subNodeValue);
+
+                                // Set the next instruction.
+                                option = status;
+                            }
+                        }
+                        else if (subIndex == tree.SubNodeCount + 1)
+                        {
+                            // We're outside the maximum sub nodes. Let's increment the parent
+                            // sub index and end this method.
+                            // Incrementing the line index to overlook the next line, '}'
+
+#if DEBUG
+                            Console.Title = Console.Title[..^add.Length];
+#endif
+                            context.lineIndex++;
+                            return VkvModifyOption.IncSubIndex;
+                        }
+                        else
+                        {
+                            // We're in a valid range. Let's just change the sub node we're
+                            // focused on.
+                            context.lineIndex++;
+
+                            if (subIndex < tree.SubNodeCount)
+                            {
+                                // We are talking about an already existing node, so we also need
+                                // to start modification of the first sub node.
+                                KeyValuePair<string, VkvNode>? subNode = tree[subIndex];
+                                if (subNode is not null)
+                                {
+                                    string subNodeKey = subNode.Value.Key;
+                                    VkvNode subNodeValue = subNode.Value.Value;
+
+                                    VkvModifyOption status = 
+                                        VkvModifyNode(ref subNodeValue, ref subNodeKey, ref context, false, ref tree, ref subIndex);
+
+                                    // Update the parent node with our modified sub node.
+                                    tree![subIndex] = new(subNodeKey, subNodeValue);
+
+                                    // Set the next instruction.
+                                    option = status;
+                                }
+                            }
+                            else
+                            {
+                                // TODO: This is where we can decide to add sub nodes.
+                                option = null;
+                                selection = VkvModifySelection.CreateNew;
+
+#if DEBUG
+                                string secondAdd = " [CREATE NEW]";
+                                add += secondAdd;
+                                Console.Title += secondAdd;
+#endif
+                            }
+                        }
+                    }
+                    else
+                    {
+                        // We aren't in a tree. We just change the parent sub index and
+                        // end this method (and increment the line).
+
+#if DEBUG
+                        Console.Title = Console.Title[..^add.Length];
+#endif
+                        return VkvModifyOption.IncSubIndex;
+                    }
+                    break;
+
+                case VkvModifyOption.DecSubIndex:
+                    // TODO: Implement when moving downward is complete.
+                    // It's a little weird to not be able to move back up,
+                    // I know, but it's gonna be weirder to implement, and
+                    // I only want to do it once.
+                    option = null;
+                    break;
+
+                case VkvModifyOption.RShiftMode:
+                    selection = selection switch
+                    {
+                        VkvModifySelection.Delete => VkvModifySelection.Name,
+                        VkvModifySelection.Name => single is null ? selection : VkvModifySelection.Value,
+                        _ => selection
+                    };
+                    option = null;
+                    break;
+
+                case VkvModifyOption.LShiftMode:
+                    selection = selection switch
+                    {
+                        VkvModifySelection.Name => isGlobal ? VkvModifySelection.Name : VkvModifySelection.Delete,
+                        VkvModifySelection.Value => VkvModifySelection.Name,
+                        _ => selection
+                    };
+                    option = null;
+                    break;
+
+                case VkvModifyOption.Use:
+                    switch (selection)
+                    {
+                        case VkvModifySelection.Delete:
+                            string unrefNodeName = nodeName;
+                            VkvNode unrefNode = node;
+                            parentNode![parentSubIndex - 1] = null;
+
+                            // Inefficient, yeah, but again, this is intended to
+                            // be used by humans, not robots. Feel free to improve
+                            // it if you want, but I probably won't.
+
+                            List<string> newLines = VkvModifyGetLines(context.rootNode, context.rootNodeName, 0);
+                            int endBuffer = context.displayLines.Count - newLines.Count;
+                            context.displayLines = newLines;
+
+                            VkvModifyPrintAll(ref context, true, true);
+
+                            // TODO: Kinda works, but it's quite buggy. Fix later.
+
+                            Console.SetCursorPosition(0, context.startingCursor + context.displayLines.Count);
+                            for (int i = 0; i < endBuffer; i++) Console.WriteLine(new string(' ', Console.WindowWidth));
+                            break;
+
+                        case VkvModifySelection.Name:
+                            VkvModifyRefactorName(ref nodeName, ref context);
+                            break;
+
+                        case VkvModifySelection.Value:
+                            if (single is null)
+                            {
+                                option = null;
+                                continue;
+                            }
+                            VkvModifyRefactorValue(ref single, ref context);
+                            break;
+
+                        case VkvModifySelection.CreateNew:
+                            // TODO
+                            break;
+                    }
+                    option = null;
+                    break;
+
+                case VkvModifyOption.ExitAll: return VkvModifyOption.ExitAll;
+
+                default:
+                    option = null;
+                    continue;
+            }
+        }
+    }
+
+    private static void VkvModifyRefactorName(ref string nodeName, ref VkvModifyContext context)
+    {
+        string originalName = nodeName;
+        string edit = context.displayLines[context.lineIndex];
+
+        int firstQuote = edit.IndexOf('\"'),
+            secondQuote = edit[(firstQuote + 1)..].IndexOf('\"') + firstQuote + 1;
+
+        int displayIndex = secondQuote, nameIndex = nodeName.Length;
+
+        int additionalAnsiTakeoff = 0;
+
+        {
+            // I almost never do this ("this" being the brackets while
+            // already inside a method), but I also don't like
+            // keeping temporary variables around for no reason.
+            bool tempActive = false;
+            for (int i = 0; i < displayIndex; i++)
+            {
+                if (edit[i] == '\x1b') tempActive = true;
+                if (tempActive) additionalAnsiTakeoff++;
+                if (tempActive && edit[i] == 'm') tempActive = false;
+            }
+        }
+
+        while (true)
+        {
+            Console.CursorLeft = 0;
+            Console.Write(Whitify(edit, VkvModifySelection.Name, true));
+
+            Console.CursorLeft = displayIndex - additionalAnsiTakeoff;
+            Console.CursorVisible = true;
+            ConsoleKeyInfo key = Console.ReadKey(true);
+            Console.CursorVisible = false;
+            if (char.IsControl(key.KeyChar))
+            {
+                // TODO: Adding clipboard support might be cool (but also a pain).
+                bool end = false;
+                switch (key.Key)
+                {
+                    case ConsoleKey.Backspace:
+                        if (nameIndex > 0)
+                        {
+                            nodeName = nodeName.Remove(nameIndex - 1, 1);
+                            edit = edit.Remove(displayIndex - 1, 1) + ' ';
+                            displayIndex--;
+                            nameIndex--;
+                        }
+                        break;
+
+                    case ConsoleKey.Delete:
+                        if (nameIndex < nodeName.Length)
+                        {
+                            nodeName = nodeName.Remove(nameIndex, 1);
+                            edit = edit.Remove(displayIndex, 1) + ' ';
+                        }
+                        break;
+
+                    case ConsoleKey.Escape:
+                        nodeName = originalName;
+                        edit = context.displayLines[context.lineIndex];
+                        end = true;
+                        break;
+
+                    case ConsoleKey.Enter:
+                        end = true;
+                        break;
+
+                    case ConsoleKey.LeftArrow:
+                        if (nameIndex > 0)
+                        {
+                            displayIndex--;
+                            nameIndex--;
+                        }
+                        break;
+
+                    case ConsoleKey.RightArrow:
+                        if (nameIndex < nodeName.Length)
+                        {
+                            displayIndex++;
+                            nameIndex++;
+                        }
+                        break;
+                }
+                if (end) break;
+            }
+            else
+            {
+                nodeName = nodeName.Insert(nameIndex, key.KeyChar.ToString());
+                edit = edit.Insert(displayIndex, key.KeyChar.ToString()).TrimEnd();
+                displayIndex++;
+                nameIndex++;
+            }
+        }
+
+        context.displayLines[context.lineIndex] = edit.TrimEnd();
+    }
+    private static void VkvModifyRefactorValue(ref VkvSingleNode node, ref VkvModifyContext context)
+    {
+        string value = node.value?.ToString() ?? string.Empty,
+               edit = context.displayLines[context.lineIndex];
+
+        int firstQuote = edit.IndexOf('\"'),
+            secondQuote = edit[(firstQuote + 1)..].IndexOf('\"') + firstQuote + 1,
+            thirdQuote = edit[(secondQuote + 1)..].IndexOf('\"') + secondQuote + 1,
+            fourthQuote = edit[(thirdQuote + 1)..].IndexOf('\"') + thirdQuote + 1;
+
+        int displayIndex = fourthQuote, valueIndex = value.Length;
+
+        int additionalAnsiTakeoff = 0;
+
+        {
+            // See my opinions of brackets while already
+            // inside a method in the `VkvModifyRefactorName`
+            // method.
+            bool tempActive = false;
+            for (int i = 0; i < displayIndex; i++)
+            {
+                if (edit[i] == '\x1b') tempActive = true;
+                if (tempActive) additionalAnsiTakeoff++;
+                if (tempActive && edit[i] == 'm') tempActive = false;
+            }
+        }
+
+        while (true)
+        {
+            Console.CursorLeft = 0;
+            Console.Write(Whitify(edit, VkvModifySelection.Value, true));
+
+            Console.CursorLeft = displayIndex - additionalAnsiTakeoff;
+            Console.CursorVisible = true;
+            ConsoleKeyInfo key = Console.ReadKey(true);
+            Console.CursorVisible = false;
+            if (char.IsControl(key.KeyChar))
+            {
+                // TODO: Adding clipboard support might be cool (but also a pain).
+                bool end = false;
+                switch (key.Key)
+                {
+                    case ConsoleKey.Backspace:
+                        if (valueIndex > 0)
+                        {
+                            value = value.Remove(valueIndex - 1, 1);
+                            edit = edit.Remove(displayIndex - 1, 1) + ' ';
+                            displayIndex--;
+                            valueIndex--;
+                        }
+                        break;
+
+                    case ConsoleKey.Delete:
+                        if (valueIndex < value.Length)
+                        {
+                            value = value.Remove(valueIndex, 1);
+                            edit = edit.Remove(displayIndex, 1) + ' ';
+                        }
+                        break;
+
+                    case ConsoleKey.Escape:
+                        edit = context.displayLines[context.lineIndex];
+                        end = true;
+                        break;
+
+                    case ConsoleKey.Enter:
+                        node.value = value;
+                        end = true;
+                        break;
+
+                    case ConsoleKey.LeftArrow:
+                        if (valueIndex > 0)
+                        {
+                            displayIndex--;
+                            valueIndex--;
+                        }
+                        break;
+
+                    case ConsoleKey.RightArrow:
+                        if (valueIndex < value.Length)
+                        {
+                            displayIndex++;
+                            valueIndex++;
+                        }
+                        break;
+                }
+                if (end) break;
+            }
+            else
+            {
+                value = value.Insert(valueIndex, key.KeyChar.ToString());
+                edit = edit.Insert(displayIndex, key.KeyChar.ToString()).TrimEnd();
+                displayIndex++;
+                valueIndex++;
+            }
+        }
+
+        context.displayLines[context.lineIndex] = edit.TrimEnd();
+    }
+
+    private static void VkvModifyPrintAll(ref VkvModifyContext context, bool resetCursor, bool flushLine = false)
+    {
+        Int2 cursorPos = (Console.CursorLeft, Console.CursorTop);
+
+        Console.SetCursorPosition(0, context.startingCursor);
+        foreach (string line in context.displayLines)
+        {
+            Console.Write(line);
+            if (flushLine) Console.Write(new string(' ', Console.WindowWidth - line.Length));
+            Console.WriteLine();
+            Console.ResetColor();
+        }
+
+        if (resetCursor) Console.SetCursorPosition(cursorPos.x, cursorPos.y);
+    }
+
+    private static List<string> VkvModifyGetLines(VkvNode node, string nodeName, int indent)
+    {
+        int spaceCount = indent * 4,
+            nextSpaceCount = (indent + 1) * 4;
+
+        List<string> lines = new();
+
+        if (node is VkvSingleNode single) lines.Add(new string(' ', spaceCount) + $"\x1b[33m\"{nodeName}\"" +
+                                                    $"  \x1b[32m\"{single.value}\"");
+        else if (node is VkvTreeNode tree)
+        {
+            lines.Add(new string(' ', spaceCount) + $"\x1b[94m\"{nodeName}\"");
+            lines.Add(new string(' ', spaceCount) + "{");
+            foreach (KeyValuePair<string, VkvNode> pair in tree)
+            {
+                lines.AddRange(VkvModifyGetLines(pair.Value, pair.Key, indent + 1));
+            }
+            lines.Add(new string(' ', nextSpaceCount) + "\x1b[35m...");
+            lines.Add(new string(' ', spaceCount) + "}");
+        }
+        else lines.Add(new string(' ', spaceCount) + "\x1b[31mError");
+
+        return lines;
+    }
+
+    private static string Whitify(string content, VkvModifySelection selection, bool blink = false)
+    {
+        StringBuilder result = new();
+
+        // This is definitely optimizable, but I don't feel like doing that yet.
+        // Maybe in the future.
+        // For future reference, when (if) this is optimized, I am doing stuff like this in this
+        // method along with the name and value refactoring methods.
+        int firstQuote = content.IndexOf('\"'),
+            secondQuote = content[(firstQuote + 1)..].IndexOf('\"') + firstQuote + 1,
+            thirdQuote = content[(secondQuote + 1)..].IndexOf('\"') + secondQuote + 1,
+            fourthQuote = content[(thirdQuote + 1)..].IndexOf('\"') + thirdQuote + 1;
+
+        int startChar = 0;
+        while (char.IsWhiteSpace(content[startChar])) startChar++;
+
+        int endChar = content.Length - 1;
+        while (char.IsWhiteSpace(content[endChar])) endChar--;
+
+        switch (selection)
+        {
+            case VkvModifySelection.Name:
+                if (firstQuote < 0 || secondQuote < 0) return content;
+
+                result.Append(content[..firstQuote]);
+                if (blink)
+                {
+                    result.Append("\"\x1b[5m");
+                    result.Append(content[(firstQuote + 1)..secondQuote]);
+                    result.Append("\x1b[25m\"");
+                }
+                else
+                {
+                    result.Append("\x1b[107m");
+                    result.Append(content[firstQuote..(secondQuote + 1)]);
+                    result.Append("\x1b[0m");
+                }
+                result.Append(content[(secondQuote + 1)..]);
+                break;
+
+            case VkvModifySelection.Value:
+                if (thirdQuote < 0 || fourthQuote < 0) return content;
+
+                result.Append(content[..thirdQuote]);
+                if (blink)
+                {
+                    result.Append("\"\x1b[5m");
+                    result.Append(content[(thirdQuote + 1)..fourthQuote]);
+                    result.Append("\x1b[25m\"");
+                }
+                else
+                {
+                    result.Append("\x1b[107m");
+                    result.Append(content[thirdQuote..(fourthQuote + 1)]);
+                    result.Append("\x1b[0m");
+                }
+                result.Append(content[(fourthQuote + 1)..]);
+                break;
+
+            case VkvModifySelection.Delete:
+                const string addDelete = "[Delete]";
+
+                result.Append($"\x1b[107m\x1b[31m{addDelete}\x1b[0m ");
+                if (addDelete.Length + 1 > startChar) result.Append(content[startChar..]);
+                else result.Append(content[(addDelete.Length + 1)..]);
+                break;
+
+            case VkvModifySelection.CreateNew:
+                result.Append(content[..startChar]);
+                result.Append("\x1b[107m");
+                result.Append(content[startChar..(endChar + 1)]);
+                result.Append("\x1b[0m");
+                result.Append(content[(endChar + 1)..]);
+                break;
+        }
+
+        return result.ToString();
+    }
+
+    private class VkvModifyContext
+    {
+        public required List<string> displayLines;
+        public int lineIndex;
+        public required VkvNode rootNode;
+        public required string rootNodeName;
+        public readonly int startingCursor;
+
+        public VkvModifyContext()
+        {
+            lineIndex = 0;
+            startingCursor = Console.CursorTop;
+        }
+    }
+
+    private enum VkvModifyOption
+    {
+        Nothing,
+        IncSubIndex,
+        DecSubIndex,
+        RShiftMode,
+        LShiftMode,
+        Use,
+        ExitAll
+    }
+    private enum VkvModifySelection
+    {
+        Delete,
+        Name,
+        Value,
+        CreateNew
+    }
+#endregion
+}

SrcMod/Shell/Shell.cs

@@ -4,7 +4,7 @@ public class Shell
 {
     public const string Author = "That_One_Nerd";
     public const string Name = "SrcMod";
-    public const string Version = "Beta 0.5.0";
+    public const string Version = "Beta 0.6.0";
 
     public bool HasAnyDisplayableError => HasDisplayableError || Config.HasDisplayableError;
     public bool HasAnyDisplayableWarning => HasDisplayableWarning || Config.HasDisplayableWarning;

SrcMod/Valve.NET/Vkv/VkvConvert.cs

@@ -19,16 +19,19 @@ public static class VkvConvert
 
     #region DeserializeNode
     public static VkvNode? DeserializeNode(StreamReader reader) =>
-        DeserializeNode(reader, VkvOptions.Default);
-    public static VkvNode? DeserializeNode(StreamReader reader, VkvOptions options)
+        DeserializeNode(reader, VkvOptions.Default, out _);
+    public static VkvNode? DeserializeNode(StreamReader reader, VkvOptions options) =>
+        DeserializeNode(reader, options, out _);
+    public static VkvNode? DeserializeNode(StreamReader reader, VkvOptions options, out string name)
     {
         try
         {
-            return DeserializeNode(reader, options, out _, null);
+            return DeserializeNode(reader, options, out name, null);
         }
         catch
         {
             if (!options.noExceptions) throw;
+            name = string.Empty;
             return null;
         }
     }
@@ -63,7 +66,9 @@ public static class VkvConvert
             string? current;
             while ((current = reader.ReadLine()?.Trim()) is not null)
             {
-                if (current == "}") break;
+                if (string.IsNullOrWhiteSpace(current)) continue;
+                else if (current == "}") break;
+
                 VkvNode? output = DeserializeNode(reader, options, out string subName, current);
                 tree[subName] = output;
             }

SrcMod/Valve.NET/Vkv/VkvSerializer.cs

@@ -29,6 +29,23 @@ public class VkvSerializer
             if (!p_options.closeWhenFinished && p_options.resetStreamPosition) stream.Seek(pos, SeekOrigin.Begin);
         }
     }
+    public VkvNode? Deserialize(Stream stream, out string name)
+    {
+        long pos = stream.Position;
+        StreamReader reader = new(stream, leaveOpen: !p_options.closeWhenFinished);
+        try
+        {
+            VkvNode? result = VkvConvert.DeserializeNode(reader, p_options, out name);
+            reader.Close();
+            if (!p_options.closeWhenFinished && p_options.resetStreamPosition) stream.Seek(pos, SeekOrigin.Begin);
+            return result;
+        }
+        finally
+        {
+            reader.Close();
+            if (!p_options.closeWhenFinished && p_options.resetStreamPosition) stream.Seek(pos, SeekOrigin.Begin);
+        }
+    }
     public T? Deserialize<T>(Stream stream)
     {
         VkvNode? result = Deserialize(stream);

SrcMod/Valve.NET/Vkv/VkvTreeNode.cs

@@ -1,45 +1,166 @@
 namespace Valve.Vkv;
 
-public class VkvTreeNode : VkvNode, IEnumerable<KeyValuePair<string, VkvNode?>>
+public class VkvTreeNode : VkvNode, IEnumerable<KeyValuePair<string, VkvNode>>
 {
     public int SubNodeCount => p_subNodes.Count;
 
-    private readonly Dictionary<string, VkvNode?> p_subNodes;
+    // These should never get out of sync, or bad things will happen.
+    private readonly List<string> p_subNodeKeys;
+    private readonly List<VkvNode> p_subNodes;
 
     public VkvTreeNode(Dictionary<string, VkvNode?>? subNodes = null) : base()
     {
-        p_subNodes = subNodes ?? new();
+        p_subNodeKeys = new();
+        p_subNodes = new();
+
+        if (subNodes is not null)
+        {
+            for (int i = 0; i < subNodes.Count; i++)
+            {
+                string key = subNodes.Keys.ElementAt(i);
+                VkvNode? value = subNodes.Values.ElementAt(i);
+                
+                if (value is not null)
+                {
+                    p_subNodeKeys.Add(key);
+                    p_subNodes.Add(value);
+                }
+            }
+        }
     }
 
     public VkvNode? this[string key]
     {
         get
         {
-            if (p_subNodes.TryGetValue(key, out VkvNode? value)) return value;
-            else return null;
+            int index = p_subNodeKeys.IndexOf(key);
+
+            if (index == -1) return null;
+            else return p_subNodes[index];
         }
         set
         {
-            if (p_subNodes.ContainsKey(key)) p_subNodes[key] = value;
-            else p_subNodes.Add(key, value);
+            int index = p_subNodeKeys.IndexOf(key);
+
+            if (index == -1)
+            {
+                if (value is null) return;
+
+                p_subNodeKeys.Add(key);
+                p_subNodes.Add(value);
+            }
+            else
+            {
+                if (value is null)
+                {
+                    p_subNodeKeys.RemoveAt(index);
+                    p_subNodes.RemoveAt(index);
+                }
+                else p_subNodes[index] = value;
+            }
         }
     }
-    public VkvNode? this[int index]
+    public KeyValuePair<string, VkvNode>? this[int index]
     {
         get
         {
-            if (p_subNodes.Count >= index || index < 0) return null;
-            return p_subNodes.Values.ElementAt(index);
+            if (index >= SubNodeCount || index < 0) return null;
+            return new(p_subNodeKeys[index], p_subNodes[index]);
         }
         set
         {
-            if (p_subNodes.Count >= index || index < 0) throw new IndexOutOfRangeException();
-            p_subNodes[p_subNodes.Keys.ElementAt(index)] = value;
+            if (index >= SubNodeCount || index < 0) throw new IndexOutOfRangeException();
+
+            if (value is null)
+            {
+                p_subNodeKeys.RemoveAt(index);
+                p_subNodes.RemoveAt(index);
+            }
+            else
+            {
+                p_subNodeKeys[index] = value.Value.Key;
+                p_subNodes[index] = value.Value.Value;
+            }
+        }
+    }
+    public KeyValuePair<string, VkvNode>? this[Func<int, KeyValuePair<string, VkvNode>, bool> predicate]
+    {
+        get
+        {
+            for (int i = 0; i < SubNodeCount; i++)
+            {
+                KeyValuePair<string, VkvNode> pair = new(p_subNodeKeys[i], p_subNodes[i]);
+                if (predicate(i, pair)) return pair;
+            }
+            return null;
+        }
+        set
+        {
+            for (int i = 0; i < SubNodeCount; i++)
+            {
+                KeyValuePair<string, VkvNode> pair = new(p_subNodeKeys[i], p_subNodes[i]);
+                if (predicate(i, pair))
+                {
+                    if (value.HasValue)
+                    {
+                        p_subNodeKeys[i] = value.Value.Key;
+                        p_subNodes[i] = value.Value.Value;
+                    }
+                    else
+                    {
+                        p_subNodeKeys.RemoveAt(i);
+                        p_subNodes.RemoveAt(i);
+                        i--;
+                    }
+                }
+            }
         }
     }
 
-    public void Add(string key, VkvNode? value) => this[key] = value;
+    public void Add(string key, VkvNode value) => this[key] = value;
 
     IEnumerator IEnumerable.GetEnumerator() => GetEnumerator();
-    public IEnumerator<KeyValuePair<string, VkvNode?>> GetEnumerator() => p_subNodes.GetEnumerator();
+    public IEnumerator<KeyValuePair<string, VkvNode>> GetEnumerator()
+    {
+        for (int i = 0; i < SubNodeCount; i++)
+        {
+            yield return new(p_subNodeKeys[i], p_subNodes[i]);
+        }
+    }
+
+    public void Remove(string key)
+    {
+        int index = p_subNodeKeys.IndexOf(key);
+        if (index == -1) return;
+
+        p_subNodeKeys.RemoveAt(index);
+        p_subNodes.RemoveAt(index);
+    }
+    public void Remove(VkvNode value)
+    {
+        int index = p_subNodes.IndexOf(value);
+        if (index == -1) return;
+
+        p_subNodeKeys.RemoveAt(index);
+        p_subNodes.RemoveAt(index);
+    }
+
+    public void RemoveAll(string key)
+    {
+        int index;
+        while ((index = p_subNodeKeys.IndexOf(key)) != -1)
+        {
+            p_subNodeKeys.RemoveAt(index);
+            p_subNodes.RemoveAt(index);
+        }
+    }
+    public void RemoveAll(VkvNode value)
+    {
+        int index;
+        while ((index = p_subNodes.IndexOf(value)) != -1)
+        {
+            p_subNodeKeys.RemoveAt(index);
+            p_subNodes.RemoveAt(index);
+        }
+    }
 }