Lidarr/NzbDrone.Core/Indexers/XElementExtensions.cs

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using System;
using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Text.RegularExpressions;
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using System.Xml.Linq;
using NLog;
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namespace NzbDrone.Core.Indexers
{
public static class XElementExtensions
{
private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
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private static readonly Regex RemoveTimeZoneRegex = new Regex(@"\s[A-Z]{2,4}$", RegexOptions.Compiled);
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public static string Title(this XElement item)
{
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return item.TryGetValue("title", "Unknown");
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}
public static DateTime PublishDate(this XElement item)
{
string dateString = item.TryGetValue("pubDate");
try
{
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DateTime result;
if (!DateTime.TryParse(dateString, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AdjustToUniversal, out result))
{
dateString = RemoveTimeZoneRegex.Replace(dateString, "");
result = DateTime.Parse(dateString, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AdjustToUniversal);
}
return result.ToUniversalTime();
}
catch (FormatException e)
{
Logger.WarnException("Unable to parse " + dateString, e);
throw;
}
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}
public static List<String> Links(this XElement item)
{
var elements = item.Elements("link");
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return elements.Select(link => link.Value).ToList();
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}
public static string Description(this XElement item)
{
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return item.TryGetValue("description");
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}
public static string Comments(this XElement item)
{
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return item.TryGetValue("comments");
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}
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private static string TryGetValue(this XElement item, string elementName, string defaultValue = "")
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{
var element = item.Element(elementName);
return element != null ? element.Value : defaultValue;
}
}
}