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/* RssReader.cs $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr>.
It may be used under the terms of the GNU General Public License. */
namespace Handbrake.Functions
{
using System;
using System.IO;
using System.Text.RegularExpressions;
using System.Xml;
/// <summary>
/// Appcast Reader - Used for parsing HandBrakes update file
/// </summary>
public class AppcastReader
{
/// <summary>
/// Gets Information about an update to HandBrake
/// </summary>
public Uri DescriptionUrl { get; private set; }
/// <summary>
/// Gets HandBrake's version from the appcast.xml file.
/// </summary>
public string Version { get; private set; }
/// <summary>
/// Gets HandBrake's Build from the appcast.xml file.
/// </summary>
public string Build { get; private set; }
/// <summary>
/// Gets the URL for update file.
/// </summary>
public string DownloadFile { get; private set; }
/// <summary>
/// Get the build information from the required appcasts. Run before accessing the public vars.
/// </summary>
/// <param name="input">
/// The input.
/// </param>
public void GetInfo(string input)
{
try
{
// Get the correct Appcast and set input.
XmlNode nodeItem = ReadRss(new XmlTextReader(new StringReader(input)));
string result = nodeItem.InnerXml;
// Regular Expressions
Match ver = Regex.Match(result, @"sparkle:version=""([0-9]*)\""");
Match verShort = Regex.Match(result, @"sparkle:shortVersionString=""(([svn]*)([0-9.\s]*))\""");
this.Build = ver.ToString().Replace("sparkle:version=", string.Empty).Replace("\"", string.Empty);
this.Version = verShort.ToString().Replace("sparkle:shortVersionString=", string.Empty).Replace(
"\"", string.Empty);
this.DownloadFile = nodeItem["windows"].InnerText;
this.DescriptionUrl = new Uri(nodeItem["sparkle:releaseNotesLink"].InnerText);
}
catch (Exception)
{
return;
}
}
/// <summary>
/// Read the RSS file.
/// </summary>
/// <param name="rssReader">
/// The RSS reader
/// </param>
/// <returns>
/// The read rss.
/// </returns>
private static XmlNode ReadRss(XmlReader rssReader)
{
XmlNode nodeItem = null;
XmlNode nodeChannel = null;
XmlNode nodeRss = null;
XmlDocument rssDoc = new XmlDocument();
rssDoc.Load(rssReader);
foreach (XmlNode t in rssDoc.ChildNodes)
{
if (t.Name == "rss")
{
nodeRss = t;
}
}
if (nodeRss != null)
{
foreach (XmlNode t in nodeRss.ChildNodes)
{
if (t.Name == "channel")
{
nodeChannel = t;
}
}
}
if (nodeChannel != null)
{
foreach (XmlNode t in nodeChannel.ChildNodes)
{
if (t.Name == "item")
{
nodeItem = t;
}
}
}
return nodeItem;
}
}
}
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