You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
Prowlarr/NzbDrone.Core/Indexers/BasicRssParser.cs

111 lines
3.2 KiB

using System;
using System.Collections.Generic;
using System.IO;
using System.ServiceModel.Syndication;
using NLog;
using NzbDrone.Core.Model;
namespace NzbDrone.Core.Indexers
{
public interface IParseFeed
{
IEnumerable<IndexerParseResult> Process(Stream source);
}
public class BasicRssParser : IParseFeed
{
private readonly Logger _logger;
public BasicRssParser()
{
_logger = LogManager.GetCurrentClassLogger();
}
public IEnumerable<IndexerParseResult> Process(Stream source)
{
var reader = new SyndicationFeedXmlReader(source);
var feed = SyndicationFeed.Load(reader).Items;
var result = new List<IndexerParseResult>();
foreach (var syndicationItem in feed)
{
try
{
var parsedEpisode = ParseFeed(syndicationItem);
if (parsedEpisode != null)
{
parsedEpisode.NzbUrl = GetNzbUrl(syndicationItem);
parsedEpisode.NzbInfoUrl = GetNzbUrl(syndicationItem);
result.Add(parsedEpisode);
}
}
catch (Exception itemEx)
{
itemEx.Data.Add("Item", syndicationItem.Title);
_logger.ErrorException("An error occurred while processing feed item", itemEx);
}
}
return result;
}
protected virtual string GetTitle(SyndicationItem syndicationItem)
{
return syndicationItem.Title.Text;
}
protected virtual string GetNzbUrl(SyndicationItem item)
{
return item.Links[0].Uri.ToString();
}
protected virtual string GetNzbInfoUrl(SyndicationItem item)
{
return string.Empty;
}
protected virtual IndexerParseResult PostProcessor(SyndicationItem item, IndexerParseResult currentResult)
{
return currentResult;
}
private IndexerParseResult ParseFeed(SyndicationItem item)
{
var title = GetTitle(item);
var episodeParseResult = Parser.ParseTitle<IndexerParseResult>(title);
if (episodeParseResult != null)
{
episodeParseResult.Age = DateTime.Now.Date.Subtract(item.PublishDate.Date).Days;
episodeParseResult.OriginalString = title;
episodeParseResult.SceneSource = true;
episodeParseResult.ReleaseGroup = ParseReleaseGroup(title);
}
_logger.Trace("Parsed: {0} from: {1}", episodeParseResult, item.Title.Text);
return PostProcessor(item, episodeParseResult);
}
private static string ParseReleaseGroup(string title)
{
title = title.Trim();
var index = title.LastIndexOf('-');
if (index < 0)
index = title.LastIndexOf(' ');
if (index < 0)
return String.Empty;
var group = title.Substring(index + 1);
if (group.Length == title.Length)
return String.Empty;
return group;
}
}
}