Takes card name and filters it down to proper image title

ImageFinder.cs

using System;
using System.Linq;
using System.Text;
using System.IO;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace TheGreatRename
{
    class Program
    {
        static readonly Encoding TheEncoding = new UTF8Encoding(false);

        static bool IsGood(char c)
        {
            return c != ',' && c != '\'' && c != '!' && c != '"' && c != '?' && c != ':' && c != '.';
        }

        static string Sanitize(string text)
        {
            text = text.Replace('&', '_');
            int index = text.IndexOf(" (");
            if (index >= 0)
                text = text.Substring(0, index);

            return new string(text.Where(IsGood).ToArray());
        }
        static void ReadFile(string path)
        {
            Console.WriteLine("Loading " + path);
            var text = File.ReadAllText(path, TheEncoding);
            Console.WriteLine("Parsing " + path);
            var array = JArray.Parse(text);
            Console.WriteLine("Processing " + path);
            int cardCount = 0;
            int imageCount = 0;

            using (var streamWriter = new StreamWriter(path + ".processed.json", false, TheEncoding))
            using (var jsonWriter = new JsonTextWriter(streamWriter))
            {
                jsonWriter.Formatting = Formatting.Indented;
                jsonWriter.WriteStartArray();
                
                foreach (var token in array)
                {
                    int loopCount = 1;
                    var cardType = (string)token["CardType"];
                    if (cardType == "Objective")
                        loopCount = 2;

                    for (int i = 0; i < loopCount; ++i)
                    {
                        ++cardCount;
                        jsonWriter.WriteStartObject();
                        jsonWriter.WritePropertyName("Id");
                        jsonWriter.WriteValue((string)token["id"]);
                        
                        string cardName;

                        if (loopCount > 1)
                        {
                            cardName = (string)token[i == 0 ? "ObjectiveFrontName" : "ObjectiveBackName"];
                        }
                        else
                        {
                            cardName = (string)token["CardName"];
                        }

                        jsonWriter.WritePropertyName("CardName");
                        jsonWriter.WriteValue(cardName);

                        var grouping = (string)token["Grouping"];
                        jsonWriter.WritePropertyName("Grouping");
                        jsonWriter.WriteValue(grouping);

                        var expansion = (string)token["Expansion"];
                        jsonWriter.WritePropertyName("Expansion");
                        jsonWriter.WriteValue(expansion);

                        var proposedPath = Path.Combine(
                            "images",
                            Sanitize(expansion) + " " + grouping,
                            Sanitize(cardName) + ".tif");

                        jsonWriter.WritePropertyName("ProposedPath");
                        jsonWriter.WriteValue(proposedPath);

                        var truePath = Path.Combine("..", proposedPath);
                        var exists = File.Exists(truePath);
                        jsonWriter.WritePropertyName("Exists");
                        jsonWriter.WriteValue(exists);
                        
                        if (exists)
                            ++imageCount;

                        jsonWriter.WriteEndObject();
                    }
                }

                jsonWriter.WriteEndArray();
            }

            Console.WriteLine("Checked " + cardCount + " cards.");
            Console.WriteLine("Found " + imageCount + " images.");
            Console.WriteLine("Unable to find " + (cardCount - imageCount) + " images.");
        }

        static void Main(string[] args)
        {
            try
            {
                foreach (var arg in args)
                    ReadFile(arg);
            }
            catch (Exception e)
            {
                Console.WriteLine(e.GetType());
                Console.WriteLine(e.Message);
                Console.WriteLine(e.StackTrace);
            }
            finally
            {

            }
        }
    }
}