Участник:VasilievVV/WikiAccess/0.1/Image.cs

/**********************************************************************************
 * Image class of WikiAcces Library                                               *
 * Copyright (C) 2007 Vasiliev V. V.                                              *
 *                                                                                *
 * This program is free software; you can redistribute it and/or                  *
 * modify it under the terms of the GNU General Public License                    *
 * as published by the Free Software Foundation; either version 2                 *
 * of the License, or (at your option) any later version.                         *
 *                                                                                *
 * This program is distributed in the hope that it will be useful,                *
 * but WITHOUT ANY WARRANTY; without even the implied warranty of                 *
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                  *
 * GNU General Public License for more details.                                   *
 *                                                                                *
 * You should have received a copy of the GNU General Public License              *
 * along with this program; if not, write to the Free Software                    *
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.*
 **********************************************************************************/
using System;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;

namespace WikiTools.Access
{
	/// <summary>
	/// Provides access to images
	/// </summary>
	public class Image
	{
		private AccessBrowser ab;
		private Wiki wiki;
		private string name;

		/// <summary>
		/// Initializes Image object
		/// </summary>
		/// <param name="wiki">Wiki to use</param>
		/// <param name="name">Image name</param>
		public Image(Wiki wiki, string name)
		{
			this.wiki = wiki;
			this.name = name;
			ab = wiki.ab;
		}

		/// <summary>
		/// Downloads image from wiki. Needs Special:Filepath
		/// </summary>
		/// <returns>Image</returns>
		public byte[] Download()
		{
			return ab.DownloadBinary("index.php?title=Special:Filepath/" + ab.EncodeUrl(name));
		}

		/// <summary>
		/// Computes MD5 hash using .NET and converts it to string
		/// </summary>
		/// <param name="img">Image content</param>
		/// <returns>String-formatted MD5 hash</returns>
		public static string CalculateMD5Hash(byte[] img)
		{
			MD5CryptoServiceProvider mcsp = new MD5CryptoServiceProvider();
			byte[] hash = mcsp.ComputeHash(img);
			string result = "";
			foreach (byte cbyte in hash) result += cbyte.ToString("X");
			return result;
		}
	}
}