Code-Statistics/CodeStatisticsCore/Input/File.cs

using System;
using System.IO;
using System.Text;

namespace CodeStatisticsCore.Input{
    public struct File{
        public readonly string FullPath;
        public readonly string Ext;

        private string _contents;
        private long _size;

        public string Contents{
            get{
                if (_contents == "\0"){
                    _contents = System.IO.File.ReadAllText(FullPath, Encoding.UTF8).Replace(@"\r", "").TrimEnd();
                }

                return _contents;
            }
        }

        public long SizeInBytes{
            get{
                if (_size == -1){
                    _size = new FileInfo(FullPath).Length;
                }

                return _size;
            }
        }

        public File(string fullPath){
            if (fullPath == null)throw new ArgumentNullException("fullPath");

            this.FullPath = fullPath;
            this.Ext = Path.GetExtension(fullPath).Replace(".", "").ToLowerInvariant();

            this._contents = "\0";
            this._size = -1;
        }

        public override bool Equals(object obj){
            return obj is File && ((File)obj).FullPath.Equals(this.FullPath);
        }

        public override int GetHashCode(){
            return FullPath.GetHashCode();
        }

        public override string ToString(){
            return Path.GetFileName(FullPath);
        }
    }
}