something something quill.cs

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

namespace Pen.Loader
{
    public class QuillData
    {
        public QuillData(string dbrFilePath)
        {
            var lines = File.ReadAllLines(dbrFilePath);
            var tables = new List<Table>();
            Table current = null;

            foreach (var line in lines)
            {
                if (line == "TABLE_START")
                {
                    current = new Table();
                }

                if (line == "TABLE_END")
                {
                    tables.Add(current);
                    current = null;
                }

                if (current == null)
                {
                    continue;
                }

                if (line.StartsWith("TABLE '"))
                {
                    var value = Regex.Match(line, @"TABLE '([a-zA-Z0-9\.]+)'");
                    current.FileName = value.Groups[1].Value;
                }

                if (line.StartsWith("FIELD"))
                {
                    var value = Regex.Match(line, @"FIELD '([a-zA-Z0-9\.]+)' ([a-zA-Z]+) ([0-9]+) (True|False)");
                    current.Fields.Add(new Field(value.Groups[1].Value, value.Groups[2].Value, value.Groups[3].Value, value.Groups[4].Value));
                }
            }

            if (current != null)
            {
                tables.Add(current);
            }
        }
    }

    public class Field
    {
        public string Name { get; }
        public string Type { get; }
        public bool Required { get; set; }
        public int Length { get; set; }

        public Field(string name, string type, string length, string trueOrFalse)
        {
            Name = name;
            Type = type;
            Length = int.Parse(length);
            Required = bool.Parse(trueOrFalse);
        }

    }

    public class Table
    {
        public string FileName { get; set; }
        public List<Field> Fields { get; set; } = new List<Field>();
    }
}