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Radarr/NzbDrone.Core/Parser/Parser.cs
Mark McDowall 2d2c6f866c Better parsing of 3 digit episodes
2013-08-17 22:40:39 -07:00

500 lines
19 KiB
C#
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using NLog;
using NzbDrone.Common;
using NzbDrone.Core.Parser.Model;
using NzbDrone.Core.Qualities;
using NzbDrone.Core.Tv;
namespace NzbDrone.Core.Parser
{
public static class Parser
{
private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
private static readonly Regex[] ReportTitleRegex = new[]
{
//Episodes with airdate
new Regex(@"^(?<title>.+?)?\W*(?<airyear>\d{4})\W+(?<airmonth>[0-1][0-9])\W+(?<airday>[0-3][0-9])(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Multi-Part episodes without a title (S01E05.S01E06)
new Regex(@"^(?:\W*S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:[ex]){1,2}(?<episode>\d{1,3}(?!\d+)))+){2,}(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Multi-episode Repeated (S01E05 - S01E06, 1x05 - 1x06, etc)
new Regex(@"^(?<title>.+?)(?:(\W|_)+S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:[ex]){1,2}(?<episode>\d{1,3}(?!\d+)))+){2,}(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Episodes without a title, Single (S01E05, 1x05) AND Multi (S01E04E05, 1x04x05, etc)
new Regex(@"^(?:S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:\-|[ex]|\W[ex]|_){1,2}(?<episode>\d{2,3}(?!\d+)))+)(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Episodes with a title, Single episodes (S01E05, 1x05, etc) & Multi-episode (S01E05E06, S01E05-06, S01E05 E06, etc)
new Regex(@"^(?<title>.+?)(?:(\W|_)+S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:\-|[ex]|\W[ex]|_){1,2}(?<episode>\d{2,3}(?!\d+)))+)\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Episodes with a title, Single episodes (S01E05, 1x05, etc) & Multi-episode (S01E05E06, S01E05-06, S01E05 E06, etc)
new Regex(@"^(?<title>.+?)(?:\W+S?(?<season>(?<!\d+)(?:\d{1,2}|\d{4})(?!\d+))(?:(?:\-|[ex]|\W[ex]){1,2}(?<episode>\d{2,3}(?!\d+)))+)(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Episodes with single digit episode number (S01E1, S01E5E6, etc)
new Regex(@"^(?<title>.*?)(?:\W?S?(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:(?:\-|[ex]){1,2}(?<episode>\d{1}))+)+(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Supports 103/113 naming
new Regex(@"^(?<title>.+?)?(?:\W?(?<season>(?<!\d+)\d{1})(?<episode>\d{2}(?!p|i|\d+)))+(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Mini-Series, treated as season 1, episodes are labelled as Part01, Part 01, Part.1
new Regex(@"^(?<title>.+?)(?:\W+(?:(?:Part\W?|(?<!\d+\W+)e)(?<episode>\d{1,2}(?!\d+)))+)(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Supports 1103/1113 naming
new Regex(@"^(?<title>.+?)?(?:\W?(?<season>(?<!\d+|\(|\[)\d{2})(?<episode>\d{2}(?!p|i|\d+|\)|\]|\W\d+)))+(\W+|_|$)(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Supports Season 01 Episode 03
new Regex(@"(?:.*(?:\""|^))(?<title>.*?)(?:\W?Season\W?)(?<season>(?<!\d+)\d{1,2}(?!\d+))(?:\W|_)(?:Episode\W)(?<episode>(?<!\d+)\d{1,2}(?!\d+))",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Supports Season only releases
new Regex(@"^(?<title>.+?)\W(?:S|Season)\W?(?<season>\d{1,2}(?!\d+))(\W+|_|$)(?<extras>EXTRAS|SUBPACK)?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled)
};
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)",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
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|\<|\>|\?|\*|\:|\|",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
private static readonly Regex MultiPartCleanupRegex = new Regex(@"\(\d+\)$", RegexOptions.Compiled);
private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_)(?<italian>ita|italian)|(?<german>german\b)|(?<flemish>flemish)|(?<greek>greek)(?:\W|_)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
public static ParsedEpisodeInfo ParsePath(string path)
{
var fileInfo = new FileInfo(path);
var result = ParseTitle(fileInfo.Name);
if (result == null)
{
Logger.Trace("Attempting to parse episode info using full path. {0}", fileInfo.FullName);
result = ParseTitle(fileInfo.FullName);
}
if (result == null)
{
Logger.Warn("Unable to parse episode info from path {0}", path);
}
return result;
}
public static ParsedEpisodeInfo ParseTitle(string title)
{
try
{
if (!ValidateBeforeParsing(title)) return null;
Logger.Trace("Parsing string '{0}'", title);
var simpleTitle = SimpleTitleRegex.Replace(title, String.Empty);
foreach (var regex in ReportTitleRegex)
{
var match = regex.Matches(simpleTitle);
if (match.Count != 0)
{
var result = ParseMatchCollection(match);
if (result != null)
{
//Check if episode is in the future (most likely a parse error)
if (result.AirDate > DateTime.Now.AddDays(1).Date || result.AirDate < new DateTime(1970, 1, 1))
break;
result.Language = ParseLanguage(title);
result.Quality = ParseQuality(title);
return result;
}
}
}
}
catch (Exception e)
{
if (!title.ToLower().Contains("password") && !title.ToLower().Contains("yenc"))
Logger.ErrorException("An error has occurred while trying to parse " + title, e);
}
Logger.Trace("Unable to parse {0}", title);
return null;
}
private static ParsedEpisodeInfo ParseMatchCollection(MatchCollection matchCollection)
{
var seriesName = matchCollection[0].Groups["title"].Value.Replace('.', ' ');
int airYear;
Int32.TryParse(matchCollection[0].Groups["airyear"].Value, out airYear);
ParsedEpisodeInfo result;
if (airYear < 1900)
{
var seasons = new List<int>();
foreach (Capture seasonCapture in matchCollection[0].Groups["season"].Captures)
{
int parsedSeason;
if (Int32.TryParse(seasonCapture.Value, out parsedSeason))
seasons.Add(parsedSeason);
}
//If no season was found it should be treated as a mini series and season 1
if (seasons.Count == 0)
seasons.Add(1);
//If more than 1 season was parsed go to the next REGEX (A multi-season release is unlikely)
if (seasons.Distinct().Count() > 1)
return null;
result = new ParsedEpisodeInfo
{
SeasonNumber = seasons.First(),
EpisodeNumbers = new int[0],
};
foreach (Match matchGroup in matchCollection)
{
var episodeCaptures = matchGroup.Groups["episode"].Captures.Cast<Capture>().ToList();
//Allows use to return a list of 0 episodes (We can handle that as a full season release)
if (episodeCaptures.Any())
{
var first = Convert.ToInt32(episodeCaptures.First().Value);
var last = Convert.ToInt32(episodeCaptures.Last().Value);
if (first > last)
{
return null;
}
var count = last - first + 1;
result.EpisodeNumbers = Enumerable.Range(first, count).ToArray();
}
else
{
//Check to see if this is an "Extras" or "SUBPACK" release, if it is, return NULL
//Todo: Set a "Extras" flag in EpisodeParseResult if we want to download them ever
if (!String.IsNullOrWhiteSpace(matchCollection[0].Groups["extras"].Value))
return null;
result.FullSeason = true;
}
}
}
else
{
//Try to Parse as a daily show
var airmonth = Convert.ToInt32(matchCollection[0].Groups["airmonth"].Value);
var airday = Convert.ToInt32(matchCollection[0].Groups["airday"].Value);
//Swap day and month if month is bigger than 12 (scene fail)
if (airmonth > 12)
{
var tempDay = airday;
airday = airmonth;
airmonth = tempDay;
}
result = new ParsedEpisodeInfo
{
AirDate = new DateTime(airYear, airmonth, airday).Date,
};
}
result.SeriesTitle = CleanSeriesTitle(seriesName);
Logger.Trace("Episode Parsed. {0}", result);
return result;
}
public static string ParseSeriesName(string title)
{
Logger.Trace("Parsing string '{0}'", title);
var parseResult = ParseTitle(title);
if (parseResult == null)
{
return CleanSeriesTitle(title);
}
return parseResult.SeriesTitle;
}
private static QualityModel ParseQuality(string name)
{
Logger.Trace("Trying to parse quality for {0}", name);
name = name.Trim();
var normalizedName = CleanSeriesTitle(name);
var result = new QualityModel { Quality = Quality.Unknown };
result.Proper = (normalizedName.Contains("proper") || normalizedName.Contains("repack"));
if (normalizedName.Contains("dvd") || normalizedName.Contains("bdrip") || normalizedName.Contains("brrip"))
{
result.Quality = Quality.DVD;
return result;
}
if (normalizedName.Contains("xvid") || normalizedName.Contains("divx") || normalizedName.Contains("dsr"))
{
if (normalizedName.Contains("bluray"))
{
result.Quality = Quality.DVD;
return result;
}
result.Quality = Quality.SDTV;
return result;
}
if (normalizedName.Contains("bluray"))
{
if (normalizedName.Contains("720p"))
{
result.Quality = Quality.Bluray720p;
return result;
}
if (normalizedName.Contains("1080p"))
{
result.Quality = Quality.Bluray1080p;
return result;
}
result.Quality = Quality.Bluray720p;
return result;
}
if (normalizedName.Contains("webdl") || normalizedName.Contains("webrip"))
{
if (normalizedName.Contains("1080p"))
{
result.Quality = Quality.WEBDL1080p;
return result;
}
if (normalizedName.Contains("720p"))
{
result.Quality = Quality.WEBDL720p;
return result;
}
if (name.Contains("[WEBDL]"))
{
result.Quality = Quality.WEBDL720p;
return result;
}
result.Quality = Quality.WEBDL480p;
return result;
}
if (normalizedName.Contains("trollhd") || normalizedName.Contains("rawhd"))
{
result.Quality = Quality.RAWHD;
return result;
}
if (normalizedName.Contains("x264") || normalizedName.Contains("h264") || normalizedName.Contains("720p"))
{
if (normalizedName.Contains("1080p"))
{
result.Quality = Quality.HDTV1080p;
return result;
}
result.Quality = Quality.HDTV720p;
return result;
}
//Based on extension
if (result.Quality == Quality.Unknown && !name.ContainsInvalidPathChars())
{
try
{
switch (Path.GetExtension(name).ToLower())
{
case ".avi":
case ".xvid":
case ".divx":
case ".wmv":
case ".mp4":
case ".mpg":
case ".mpeg":
case ".mov":
case ".rm":
case ".rmvb":
case ".flv":
case ".dvr-ms":
case ".ogm":
case ".strm":
{
result.Quality = Quality.SDTV;
break;
}
case ".mkv":
case ".ts":
{
result.Quality = Quality.HDTV720p;
break;
}
}
}
catch (ArgumentException)
{
//Swallow exception for cases where string contains illegal
//path characters.
}
}
if (name.Contains("[HDTV]"))
{
result.Quality = Quality.HDTV720p;
return result;
}
if (normalizedName.Contains("hdtv") && normalizedName.Contains("1080p"))
{
result.Quality = Quality.HDTV1080p;
return result;
}
if ((normalizedName.Contains("sdtv") || normalizedName.Contains("pdtv") ||
(result.Quality == Quality.Unknown && normalizedName.Contains("hdtv"))) &&
!normalizedName.Contains("mpeg"))
{
result.Quality = Quality.SDTV;
return result;
}
return result;
}
private static Language ParseLanguage(string title)
{
var lowerTitle = title.ToLower();
if (lowerTitle.Contains("english"))
return Language.English;
if (lowerTitle.Contains("french"))
return Language.French;
if (lowerTitle.Contains("spanish"))
return Language.Spanish;
if (lowerTitle.Contains("danish"))
return Language.Danish;
if (lowerTitle.Contains("dutch"))
return Language.Dutch;
if (lowerTitle.Contains("japanese"))
return Language.Japanese;
if (lowerTitle.Contains("cantonese"))
return Language.Cantonese;
if (lowerTitle.Contains("mandarin"))
return Language.Mandarin;
if (lowerTitle.Contains("korean"))
return Language.Korean;
if (lowerTitle.Contains("russian"))
return Language.Russian;
if (lowerTitle.Contains("polish"))
return Language.Polish;
if (lowerTitle.Contains("vietnamese"))
return Language.Vietnamese;
if (lowerTitle.Contains("swedish"))
return Language.Swedish;
if (lowerTitle.Contains("norwegian"))
return Language.Norwegian;
if (lowerTitle.Contains("finnish"))
return Language.Finnish;
if (lowerTitle.Contains("turkish"))
return Language.Turkish;
if (lowerTitle.Contains("portuguese"))
return Language.Portuguese;
if (lowerTitle.Contains("nlsub"))
return Language.Norwegian;
var match = LanguageRegex.Match(title);
if (match.Groups["italian"].Captures.Cast<Capture>().Any())
return Language.Italian;
if (match.Groups["german"].Captures.Cast<Capture>().Any())
return Language.German;
if (match.Groups["flemish"].Captures.Cast<Capture>().Any())
return Language.Flemish;
if (match.Groups["greek"].Captures.Cast<Capture>().Any())
return Language.Greek;
return Language.English;
}
private static bool ValidateBeforeParsing(string title)
{
if (title.ToLower().Contains("password") && title.ToLower().Contains("yenc"))
{
Logger.Trace("");
return false;
}
if (!title.Any(Char.IsLetterOrDigit) || (!title.Any(Char.IsPunctuation) && !title.Any(Char.IsWhiteSpace)))
{
return false;
}
return true;
}
public static string CleanSeriesTitle(this string title)
{
long number = 0;
//If Title only contains numbers return it as is.
if (Int64.TryParse(title, out number))
return title;
return NormalizeRegex.Replace(title, String.Empty).ToLower();
}
public static string CleanupEpisodeTitle(string title)
{
//this will remove (1),(2) from the end of multi part episodes.
return MultiPartCleanupRegex.Replace(title, string.Empty).Trim();
}
}
}
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