Text Dump for LLMs - combines multiple files into a single text file and identifies where the text originally came from

TextDumpEditorWindow.cs

using UnityEngine;
using UnityEditor;
using System.IO;
using System.Collections.Generic;

public class TextDumpEditorWindow : EditorWindow
{
    readonly List<string> inputFolders = new();
    string outputFilePath = "Assets/code-dump.txt";
    string fileExtensions = "cs"; // Default to .cs files
    const string lastOpenedFolderKey = "CodeDumpEditorWindow_LastOpenedFolder";
    const float buttonWidth = 75f;
    Vector2 scrollPosition;

    //---------------------------------------------------------------------------
    [MenuItem("Tools/Text Dump Window")]
    public static void ShowWindow()
    {
        GetWindow<TextDumpEditorWindow>("Text Dump Window");
    }

    //---------------------------------------------------------------------------
    void OnGUI()
    {
        GUILayout.Space(10);

        DrawFileExtensionsField();
        GUILayout.Space(10);
        DrawInputFoldersField();
        GUILayout.Space(10);
        DrawOutputFileField();
        GUILayout.Space(5);

        GUILayout.BeginHorizontal();
        GUILayout.FlexibleSpace();

        if (GUILayout.Button("Dump", GUILayout.Width(buttonWidth * 2)))
            DumpCodeFiles();

        GUILayout.FlexibleSpace();
        GUILayout.EndHorizontal();
    }

    //---------------------------------------------------------------------------
    void DrawFileExtensionsField()
    {
        GUILayout.Label("File Extensions (comma separated):");
        fileExtensions = EditorGUILayout.TextField(fileExtensions);
    }

    //---------------------------------------------------------------------------
    void DrawInputFoldersField()
    {
        GUILayout.Label("Input Folder Locations:");
        if (inputFolders.Count == 0)
        {
            GUILayout.Label("No folders added.");
        }
        else
        {
            foreach (string folder in inputFolders)
            {
                EditorGUILayout.BeginHorizontal();
                GUILayout.Label(folder, GUILayout.ExpandWidth(true));
                if (GUILayout.Button("Remove", GUILayout.Width(buttonWidth)))
                {
                    inputFolders.Remove(folder);
                    EditorGUILayout.EndHorizontal();
                    break; // Exit the loop to avoid modifying the collection while iterating
                }
                EditorGUILayout.EndHorizontal();
            }
        }

        if (GUILayout.Button("Add Folder", GUILayout.Width(buttonWidth)))
        {
            string lastOpenedFolder = EditorPrefs.GetString(lastOpenedFolderKey, Application.dataPath);
            string path = EditorUtility.OpenFolderPanel("Select Input Folder", lastOpenedFolder, "");
            if (!string.IsNullOrEmpty(path))
            {
                inputFolders.Add(path);
                EditorPrefs.SetString(lastOpenedFolderKey, path);
            }
        }
    }

    //---------------------------------------------------------------------------
    void DrawOutputFileField()
    {
        GUILayout.Label("Output File Name and Location:");
        EditorGUILayout.BeginHorizontal();
        outputFilePath = EditorGUILayout.TextField(outputFilePath);
        if (GUILayout.Button("Browse", GUILayout.Width(buttonWidth)))
        {
            string lastOpenedFolder = EditorPrefs.GetString(lastOpenedFolderKey, Path.GetDirectoryName(outputFilePath));
            string path = EditorUtility.SaveFilePanel("Select Output File", lastOpenedFolder, Path.GetFileName(outputFilePath), "txt");
            if (!string.IsNullOrEmpty(path))
            {
                outputFilePath = path;
                EditorPrefs.SetString(lastOpenedFolderKey, Path.GetDirectoryName(path));
            }
        }
        EditorGUILayout.EndHorizontal();
    }

    //---------------------------------------------------------------------------
    void DumpCodeFiles()
    {
        try
        {
            using StreamWriter writer = new(outputFilePath, false);

            int totalFiles = 0;
            string[] extensions = fileExtensions.Split(',');

            foreach (string folder in inputFolders)
            {
                if (!Directory.Exists(folder))
                {
                    Debug.LogError($"Input folder not found: {folder}");
                    continue;
                }

                foreach (string extension in extensions)
                {
                    string searchPattern = $"*.{extension.Trim()}";
                    string[] files = Directory.GetFiles(folder, searchPattern, SearchOption.AllDirectories);
                    totalFiles += files.Length;

                    foreach (string file in files)
                    {
                        string fileContents = File.ReadAllText(file);

                        writer.WriteLine($"// --- Begin of {Path.GetFileName(file)} ---");
                        writer.WriteLine(fileContents);
                        writer.WriteLine($"// --- End of {Path.GetFileName(file)} ---");
                        writer.WriteLine();
                    }
                }
            }

            // Let writing complete before refreshing the DB
            writer.Close();
            System.Threading.Thread.Sleep(100);
            
            AssetDatabase.Refresh();
            Debug.Log($"Exported {totalFiles} files from {inputFolders.Count} folders to {outputFilePath}");
        }
        catch (IOException ex)
        {
            Debug.LogError($"Error writing to output file: {ex.Message}");
        }
    }
}