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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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using NLog;
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using NzbDrone.Core.Model;
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using NzbDrone.Core.Repository.Quality;
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namespace NzbDrone.Core
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{
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public static class Parser
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{
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private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
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private static readonly Regex[] ReportTitleRegex = new[]
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{
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//Episodes with airdate
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new Regex(@"^(?<title>.+?)?\W*(?<airyear>\d{4})\W+(?<airmonth>\d{2})\W+(?<airday>\d{2})\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Multi-Part episodes without a title (S01E05.S01E06)
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new Regex(@"^(?:\W*S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{1,2}(?!\d+)))+){2,}\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Multi-episode (S01E05E06, S01E05-06, etc)
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new Regex(@"^(?<title>.+?)(?:\W+S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{2}(?!\d+)))+){2,}\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Single episodes (S01E05, 1x05, etc)
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new Regex(@"^(?<title>.+?)(?:\W+S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{2}(?!\d+)))+)\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Mini-Series, treated as season 1, episodes are labeled as Part01, Part 01, Part.1
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new Regex(@"^(?<title>.+?)(?:\W+(?:(?:Part\W?|(?<!\d+\W+)e)(?<episode>\d{1,2}(?!\d+)))+)\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//No Title - Single episodes or multi-episode (S01E05E06, S01E05-06, etc)
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new Regex(@"^(?:\W?S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){2}(?<episode>\d{1,2}(?!\d+)))+\W*)+\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Episodes over 99 (3-digits or more)
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new Regex(@"^(?<title>.*?)(?:\W?S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d+))+)+\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Supports 1103/1113 naming
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new Regex(@"^(?<title>.+?)?(?:\W?(?<season>(?<!\d+|\(|\[)\d{2})(?<episode>\d{2}(?!p|i|\d+|\)|\])))+\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Supports 103/113 naming
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new Regex(@"^(?<title>.+?)?(?:\W?(?<season>(?<!\d+)\d{1})(?<episode>\d{2}(?!p|i|\d+)))+\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Supports Season only releases
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new Regex(@"^(?<title>.+?)\W(?:S|Season)\W?(?<season>\d{1,2}(?!\d+))\W?(?<extras>EXTRAS|SUBPACK)?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled)
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};
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private static readonly Regex NormalizeRegex = new Regex(@"((^|\W)(a|an|the|and|or|of)($|\W))|\W|(?:(?<=[^0-9]+)|\b)(?!(?:19\d{2}|20\d{2}))\d+(?=[^0-9ip]+|\b)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled);
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private static readonly Regex SimpleTitleRegex = new Regex(@"480[i|p]|720[i|p]|1080[i|p]|[x|h|x\s|h\s]264|DD\W?5\W1|\<|\>|\?|\*|\:|\||""",
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RegexOptions.IgnoreCase | RegexOptions.Compiled);
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private static readonly Regex ReportSizeRegex = new Regex(@"(?<value>\d+\.\d{1,2}|\d+\,\d+\.\d{1,2})\W?(?<unit>GB|MB|GiB|MiB)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled);
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internal static EpisodeParseResult ParsePath(string path)
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{
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var fileInfo = new FileInfo(path);
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var result = ParseTitle(fileInfo.Name);
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if (result == null)
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{
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Logger.Trace("Attempting to parse episode info using full path. {0}", fileInfo.FullName);
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result = ParseTitle(fileInfo.FullName);
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}
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return result;
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}
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internal static EpisodeParseResult ParseTitle(string title)
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{
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try
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{
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Logger.Trace("Parsing string '{0}'", title);
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var simpleTitle = SimpleTitleRegex.Replace(title, String.Empty);
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foreach (var regex in ReportTitleRegex)
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{
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var match = regex.Matches(simpleTitle);
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if (match.Count != 0)
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{
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var result = ParseMatchCollection(match);
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if (result != null)
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{
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//Check if episode is in the future (most likley a parse error)
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if (result.AirDate > DateTime.Now.AddDays(1).Date)
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break;
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result.Language = ParseLanguage(title);
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result.Quality = ParseQuality(title);
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return result;
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}
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}
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}
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Logger.Warn("Unable to parse episode info. {0}", title);
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}
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catch (Exception e)
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{
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Logger.Error("An error has occurred while trying to parse '{0}'", title);
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}
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return null;
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}
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private static EpisodeParseResult ParseMatchCollection(MatchCollection matchCollection)
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{
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var seriesName = NormalizeTitle(matchCollection[0].Groups["title"].Value);
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int airyear;
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Int32.TryParse(matchCollection[0].Groups["airyear"].Value, out airyear);
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EpisodeParseResult parsedEpisode;
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if (airyear < 1900)
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{
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var seasons = new List<int>();
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foreach (Capture seasonCapture in matchCollection[0].Groups["season"].Captures)
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{
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int parsedSeason;
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if (Int32.TryParse(seasonCapture.Value, out parsedSeason))
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seasons.Add(parsedSeason);
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}
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//If no season was found it should be treated as a mini series and season 1
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if (seasons.Count == 0)
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seasons.Add(1);
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//If more than 1 season was parsed go to the next REGEX (A multi-season release is unlikely)
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if (seasons.Distinct().Count() > 1)
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return null;
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parsedEpisode = new EpisodeParseResult
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{
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SeasonNumber = seasons.First(),
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EpisodeNumbers = new List<int>()
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};
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foreach (Match matchGroup in matchCollection)
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{
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var episodeCaptures = matchGroup.Groups["episode"].Captures.Cast<Capture>().ToList();
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//Allows use to return a list of 0 episodes (We can handle that as a full season release)
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if (episodeCaptures.Any())
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{
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var first = Convert.ToInt32(episodeCaptures.First().Value);
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var last = Convert.ToInt32(episodeCaptures.Last().Value);
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parsedEpisode.EpisodeNumbers = Enumerable.Range(first, last - first + 1).ToList();
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}
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else
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{
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//Check to see if this is an "Extras" or "SUBPACK" release, if it is, return NULL
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//Todo: Set a "Extras" flag in EpisodeParseResult if we want to download them ever
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if (!String.IsNullOrWhiteSpace(matchCollection[0].Groups["extras"].Value))
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return null;
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parsedEpisode.FullSeason = true;
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}
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}
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}
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else
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{
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//Try to Parse as a daily show
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var airmonth = Convert.ToInt32(matchCollection[0].Groups["airmonth"].Value);
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var airday = Convert.ToInt32(matchCollection[0].Groups["airday"].Value);
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parsedEpisode = new EpisodeParseResult
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{
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AirDate = new DateTime(airyear, airmonth, airday).Date,
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};
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}
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parsedEpisode.CleanTitle = seriesName;
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Logger.Trace("Episode Parsed. {0}", parsedEpisode);
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return parsedEpisode;
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}
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public static string ParseSeriesName(string title)
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{
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Logger.Trace("Parsing string '{0}'", title);
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foreach (var regex in ReportTitleRegex)
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{
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var match = regex.Matches(title);
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if (match.Count != 0)
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{
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var seriesName = NormalizeTitle(match[0].Groups["title"].Value);
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Logger.Trace("Series Parsed. {0}", seriesName);
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return seriesName;
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}
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}
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return NormalizeTitle(title);
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}
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internal static Quality ParseQuality(string name)
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{
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Logger.Trace("Trying to parse quality for {0}", name);
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name = name.Trim();
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var normalizedName = NormalizeTitle(name);
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var result = new Quality { QualityType = QualityTypes.Unknown };
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result.Proper = normalizedName.Contains("proper");
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if (normalizedName.Contains("dvd") || normalizedName.Contains("bdrip") || normalizedName.Contains("brrip"))
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{
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result.QualityType = QualityTypes.DVD;
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return result;
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}
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if (normalizedName.Contains("xvid") || normalizedName.Contains("divx"))
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{
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if (normalizedName.Contains("bluray"))
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{
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result.QualityType = QualityTypes.DVD;
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return result;
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}
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result.QualityType = QualityTypes.SDTV;
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return result;
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}
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if (normalizedName.Contains("bluray"))
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{
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if (normalizedName.Contains("720p"))
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{
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result.QualityType = QualityTypes.Bluray720p;
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return result;
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}
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if (normalizedName.Contains("1080p"))
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{
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result.QualityType = QualityTypes.Bluray1080p;
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return result;
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}
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result.QualityType = QualityTypes.Bluray720p;
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return result;
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}
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if (normalizedName.Contains("webdl"))
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{
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result.QualityType = QualityTypes.WEBDL;
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return result;
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}
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if (normalizedName.Contains("x264") || normalizedName.Contains("h264") || normalizedName.Contains("720p"))
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{
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result.QualityType = QualityTypes.HDTV;
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return result;
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}
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//Based on extension
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if (result.QualityType == QualityTypes.Unknown)
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{
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try
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{
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switch (Path.GetExtension(name).ToLower())
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{
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case ".avi":
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case ".xvid":
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case ".wmv":
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case ".mp4":
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{
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result.QualityType = QualityTypes.SDTV;
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break;
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}
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case ".mkv":
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{
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result.QualityType = QualityTypes.HDTV;
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break;
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}
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}
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}
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catch (ArgumentException)
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{
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//Swallow exception for cases where string contains illegal
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//path characters.
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}
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}
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if ((normalizedName.Contains("sdtv") || (result.QualityType == QualityTypes.Unknown && normalizedName.Contains("hdtv"))) && !normalizedName.Contains("mpeg"))
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{
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result.QualityType = QualityTypes.SDTV;
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return result;
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}
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return result;
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}
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internal static LanguageType ParseLanguage(string title)
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{
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var lowerTitle = title.ToLower();
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if (lowerTitle.Contains("english"))
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return LanguageType.English;
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if (lowerTitle.Contains("french"))
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return LanguageType.French;
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if (lowerTitle.Contains("spanish"))
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return LanguageType.Spanish;
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if (lowerTitle.Contains("german"))
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{
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//Make sure it doesn't contain Germany (Since we're not using REGEX for all this)
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if (!lowerTitle.Contains("germany"))
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return LanguageType.German;
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}
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if (lowerTitle.Contains("italian"))
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return LanguageType.Italian;
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if (lowerTitle.Contains("danish"))
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return LanguageType.Danish;
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if (lowerTitle.Contains("dutch"))
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return LanguageType.Dutch;
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if (lowerTitle.Contains("japanese"))
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return LanguageType.Japanese;
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if (lowerTitle.Contains("cantonese"))
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return LanguageType.Cantonese;
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if (lowerTitle.Contains("mandarin"))
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return LanguageType.Mandarin;
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if (lowerTitle.Contains("korean"))
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return LanguageType.Korean;
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if (lowerTitle.Contains("russian"))
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return LanguageType.Russian;
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if (lowerTitle.Contains("polish"))
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return LanguageType.Polish;
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if (lowerTitle.Contains("vietnamese"))
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return LanguageType.Vietnamese;
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if (lowerTitle.Contains("swedish"))
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return LanguageType.Swedish;
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if (lowerTitle.Contains("norwegian"))
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return LanguageType.Norwegian;
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if (lowerTitle.Contains("finnish"))
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return LanguageType.Finnish;
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if (lowerTitle.Contains("turkish"))
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return LanguageType.Turkish;
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if (lowerTitle.Contains("portuguese"))
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return LanguageType.Portuguese;
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return LanguageType.English;
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}
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/// <summary>
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/// Normalizes the title. removing all non-word characters as well as common tokens
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/// such as 'the' and 'and'
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/// </summary>
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/// <param name = "title">title</param>
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/// <returns></returns>
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public static string NormalizeTitle(string title)
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{
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long number = 0;
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//If Title only contains numbers return it as is.
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if (Int64.TryParse(title, out number))
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return title;
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return NormalizeRegex.Replace(title, String.Empty).ToLower();
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}
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public static long GetReportSize(string sizeString)
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{
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var match = ReportSizeRegex.Matches(sizeString);
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if (match.Count != 0)
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{
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var value = Convert.ToDecimal(Regex.Replace(match[0].Groups["value"].Value, "\\,", ""));
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var unit = match[0].Groups["unit"].Value;
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if (unit.Equals("MB", StringComparison.InvariantCultureIgnoreCase) || unit.Equals("MiB", StringComparison.InvariantCultureIgnoreCase))
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return Convert.ToInt64(value * 1048576L);
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if (unit.Equals("GB", StringComparison.InvariantCultureIgnoreCase) || unit.Equals("GiB", StringComparison.InvariantCultureIgnoreCase))
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return Convert.ToInt64(value * 1073741824L);
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}
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return 0;
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}
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}
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}
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