PackTool

Program.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace PackTool
{
    internal static class Program
    {
        private static readonly Regex MusicFileRegex = new Regex("#MUSIC:\\s*(.*?)\\s*;");
        
        internal static void Main(string[] args)
        {
            if (args.Length < 1)
            {
                Console.WriteLine($"Usage: {AppDomain.CurrentDomain.FriendlyName} <path>");
                Console.WriteLine();
                Console.WriteLine("You can drag and drop a folder from windows explorer to specify path.");
                Environment.Exit(1);
            }
            

            foreach (var smFile in Directory.EnumerateFiles(args[0], "*.sm", SearchOption.AllDirectories))
            {
                var smFileInfo = new FileInfo(smFile);
                Debug.Assert(smFileInfo.Directory != null);
                
                Console.WriteLine($"Processing file '{smFileInfo.Name}' in folder '{smFileInfo.Directory.Name}'");

                IList<string> lines = File.ReadLines(smFile, Encoding.UTF8).ToList();

                var bannerFound = false;
                var backgroundFound = false;

                string musicFile = null;
                
                for (var i = 0; i < lines.Count; i++)
                {
                    if (lines[i].StartsWith("#BANNER"))
                    {
                        Console.WriteLine("\t-> Replacing #BANNER tag");
                        lines[i] = "#BANNER:../bn.png;";
                        bannerFound = true;
                    }
                    else if (lines[i].StartsWith("#BACKGROUND"))
                    {
                        Console.WriteLine("\t-> Replacing #BACKGROUND tag");
                        lines[i] = "#BACKGROUND:../bg.png;";
                        backgroundFound = true;
                    } 
                    else if (lines[i].StartsWith("#CDTITLE"))
                    {
                        Console.WriteLine("\t-> Emptying #CDTITLE tag");
                        lines[i] = "#CDTITLE:;";
                    }
                    else if (lines[i].StartsWith("#MUSIC"))
                    {
                        musicFile = MusicFileRegex.Match(lines[i]).Groups[1].Value;
                    }
                }

                if (!bannerFound)
                {
                    Console.WriteLine("\t-> Adding #BANNER tag");
                    lines.Insert(0, "#BANNER:../bn.png;");
                }
                
                if (!backgroundFound)
                {
                    Console.WriteLine("\t-> Adding #BACKGROUND tag");
                    lines.Insert(0, "#BACKGROUND:../bg.png;");
                }

                if (musicFile == null)
                {
                    Console.WriteLine($"\t/!\\ Unable to locate #MUSIC tag in file '{smFileInfo.Name}', skipping!");
                    continue;
                }

                File.WriteAllLines(smFile, lines, Encoding.UTF8);

                foreach (var fileInfo in smFileInfo.Directory.EnumerateFiles())
                {
                    if (fileInfo.FullName != smFile && fileInfo.Name != musicFile)
                    {
                        Console.WriteLine($"Removing file '{fileInfo.Name}' in folder '{smFileInfo.Directory.Name}'");
                        fileInfo.Delete();
                    }
                }
            }

            Console.WriteLine();
            Console.WriteLine("Done!");
            Console.ReadLine();
        }
    }
}