root/lang/csharp/Misuzilla.Build.Tasks.Twitter/Misuzilla.Build.Tasks.Twitter/Twitter.cs

// $Id$
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Build.Framework;
using System.Net;

namespace Misuzilla.Build.Tasks.Twitter
{
    public class TwitterUpdateStatus : Microsoft.Build.Utilities.Task
    {
        private String _message;
        private String _userName;
        private String _password;

        [Required]
        public String Message
        {
            get { return _message; }
            set { _message = value; }
        }
        [Required]
        public String UserName
        {
            get { return _userName; }
            set { _userName = value; }
        }
        [Required]
        public String Password
        {
            get { return _password; }
            set { _password = value; }
        }

        public override bool Execute()
        {
            try
            {
                Log.LogMessage("Updating Twitter Status (User:{0})", _userName);
                using (PreAuthenticatedWebClient webClient = new PreAuthenticatedWebClient(_userName, _password))
                {
                    String postUri = String.Format("http://twitter.com/statuses/update.xml?status={0}&source=Misuzilla.Build.Tasks.Twitter", UrlEncode(Message));
                    webClient.UploadData(postUri, new Byte[] { 1 });
                }
            }
            catch (WebException we)
            {
                Log.LogWarning("Twitter Status update failed.");
                Log.LogWarningFromException(we);
                return false;
            }

            return true;
        }

        /// <summary>
        /// ������RL�G���R�[�h���܂��B
        /// </summary>
        /// <param name="s">URL�G���R�[�h���镶����aram>
        /// <returns>URL�G���R�[�h���ꂽ������eturns>
        public static String UrlEncode(String s)
        {
            StringBuilder sb = new StringBuilder();
            Byte[] bytes = Encoding.UTF8.GetBytes(s);
            foreach (Byte b in bytes)
            {
                sb.AppendFormat("%{0:x2}", b);
            }

            return sb.ToString();
        }
    }

    internal class PreAuthenticatedWebClient : WebClient
    {
        public PreAuthenticatedWebClient(String userName, String password)
            : base()
        {
            CredentialCache _credentialCache = new CredentialCache();
            _credentialCache.Add(new Uri("http://twitter.com"), "Basic", new NetworkCredential(userName, password));
            Credentials = _credentialCache;
        }

        protected override WebRequest GetWebRequest(Uri address)
        {
            // ���̃A�v���P�[�V������HttpWebReqeust �ȊO�����邱�Ƃ͂Ȃ�
            HttpWebRequest webRequest = base.GetWebRequest(address) as HttpWebRequest;
            webRequest.PreAuthenticate = true;
            webRequest.Accept = "text/xml, application/xml";
            webRequest.UserAgent = String.Format("{0}/{1}", "Misuzilla.Build.Tasks.Twitter", GetType().Assembly.GetName().Version);

            return webRequest;
        }
    }
}