旧geocitiesの生きているサイトを探します。

geoexplore.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net.Http;
using System.IO;
using System.Windows.Forms;

namespace GeocitiesExplore
{
    class Program
    {
        static async Task<string> GetWebPageAsync(Uri uri)
        {
            using (HttpClient client = new HttpClient())
            {
                client.DefaultRequestHeaders.Add(
                    "User-Agent",
                    "Mozilla/5.0 (Windows NT 6.3; Trident/7.0; rv:11.0) like Gecko");
                client.DefaultRequestHeaders.Add("Accept-Language", "ja-JP");
                client.Timeout = TimeSpan.FromSeconds(10.0);
                try
                {
                    return await client.GetStringAsync(uri);
                }
                catch (Exception)
                {
                }
                return null;
            }
        }

        static string[] communityArray =
        {
            "WallStreet",
            "EpicureanTable",
            "Colosseum",
            "SiliconValley",
            "SilkRoad",
            "Technopolis",
            "Berkeley",
            "Heartland",
            "Hollywoodv",
            "Playtown",
            "Broadway",
            "Milano",
            "Milkyway",
            "MotorCity"
        };

        [STAThreadAttribute]
        static void Main(string[] args)
        {
            if (args.Length != 3 || args.Length != 4)
            {
                Console.Write("usage: geoexplore community n m [copy]\n- community\n0   WallStreet\n1   EpicureanTable\n2   Colosseum\n3   SiliconValley\n4   SilkRoad\n5   Technopolis\n6   Berkeley\n7   Heartland\n8   Hollywood\n9   Playtown\n10  Broadway\n11  Milano\n12  Milkyway\n13  MotorCity\n\n- n, m\n1000~9999\n");
                return;
            }

            int communityNum = 0;
            try
            {
                bool find = false;
                for (int i = 0; i < communityArray.Length; ++i)
                {
                    if (args[0] == communityArray[i])
                    {
                        communityNum = i;
                        find = true;
                        break;
                    }
                }
                if (!find)
                {
                    communityNum = int.Parse(args[0]);
                    if (communityNum < 0 || communityNum >= communityArray.Length)
                    {
                        throw new Exception();
                    }
                }
            }
            catch (Exception)
            {
                Console.WriteLine("Invalid community, {0}.", args[0]);
                return;
            }

            int addressN;
            try
            {
                addressN = int.Parse(args[1]);
                if (addressN < 1000 || addressN > 9999)
                {
                    throw new Exception();
                }
            }
            catch (Exception)
            {
                Console.WriteLine("Invalid address (n), {0}.", args[1]);
                return;
            }

            int addressM;
            try
            {
                addressM = int.Parse(args[2]);
                if (addressM < 1000 || addressM > 9999)
                {
                    throw new Exception();
                }
            }
            catch (Exception)
            {
                Console.WriteLine("Invalid address (m), {0}.", args[2]);
                return;
            }

            bool copy = false;
            if (args.Length == 4 && args[3] == "copy")
            {
                copy = true;
            }

            for (int i = addressN; i <= addressM; ++i)
            {
                string str = "http://www.geocities.co.jp/" + communityArray[communityNum] + "/" + i.ToString() + "/";
                Console.Write(str);
                Task<string> result = GetWebPageAsync(new Uri(str));
                result.Wait();
                if (result == null || result.Result == null || result.Result.IndexOf("<frame src=\"http://info.geocities.yahoo.co.jp/attachments/404_NotFoundUser.html\">") != -1)
                {
                    Console.WriteLine(" - 404.");
                }
                else
                {
                    Console.WriteLine(" - found.");
                    if (copy)
                    {
                        Clipboard.SetText(str);
                        Console.ReadKey();
                    }
                }
            }
            Console.WriteLine("Finish.");
            Console.ReadKey();
        }
    }
}