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Lidarr/NzbDrone.Core/Parser.cs

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using NLog;
using NzbDrone.Core.Model;
using NzbDrone.Core.Repository.Quality;
namespace NzbDrone.Core
{
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>\d{2})\W+(?<airday>\d{2})\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Multi-Part episodes without a title (S01E05.S01E06)
new Regex(@"^(?:\W*S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{1,2}(?!\d+)))+){2,}\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Multi-episode (S01E05E06, S01E05-06, etc)
new Regex(@"^(?<title>.+?)(?:\W+S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{2}(?!\d+)))+){2,}\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Single episodes (S01E05, 1x05, etc)
new Regex(@"^(?<title>.+?)(?:\W+S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{2}(?!\d+)))+)\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//No Title - Single episodes or multi-episode (S01E05E06, S01E05-06, etc)
new Regex(@"^(?:\W?S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d{1,2}(?!\d+)))+\W*)+\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Episodes over 99 (3-digits or more)
new Regex(@"^(?<title>.*?)(?:\W?S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|[ex]|\s){1,2}(?<episode>\d+))+)+\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Supports 1103/1113 naming
new Regex(@"^(?<title>.+?)?(?:\W?(?<season>\d{2})(?<episode>\d{2}(?!p|i)))+\W?(?!\\)",
RegexOptions.IgnoreCase | RegexOptions.Compiled),
//Supports 103/113 naming
new Regex(@"^(?<title>.+?)?(?:\W?(?<season>\d{1})(?<episode>\d{2}(?!p|i|\d+)))+\W?(?!\\)",
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 ReportSizeRegex = new Regex(@"(?<value>\d+\.\d{1,2}|\d+\,\d+\.\d{1,2})\W?(?<unit>GB|MB|GiB|MiB)",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
internal static EpisodeParseResult 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);
}
return result;
}
internal static EpisodeParseResult ParseTitle(string title)
{
try
{
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 likley a parse error)
if (result.AirDate > DateTime.Now.AddDays(1).Date)
break;
result.Language = ParseLanguage(title);
result.Quality = ParseQuality(title);
return result;
}
}
}
Logger.Warn("Unable to parse episode info. {0}", title);
}
catch (Exception e)
{
Logger.Error("An error has occurred while trying to parse '{0}'", title);
}
return null;
}
private static EpisodeParseResult ParseMatchCollection(MatchCollection matchCollection)
{
var seriesName = NormalizeTitle(matchCollection[0].Groups["title"].Value);
int airyear;
Int32.TryParse(matchCollection[0].Groups["airyear"].Value, out airyear);
EpisodeParseResult parsedEpisode;
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 more than 1 season was parsed go to the next REGEX (A multi-season release is unlikely)
if (seasons.Distinct().Count() != 1)
return null;
parsedEpisode = new EpisodeParseResult
{
SeasonNumber = seasons.First(),
EpisodeNumbers = new List<int>()
};
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);
parsedEpisode.EpisodeNumbers = Enumerable.Range(first, last - first + 1).ToList();
}
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;
parsedEpisode.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);
parsedEpisode = new EpisodeParseResult
{
AirDate = new DateTime(airyear, airmonth, airday).Date,
};
}
parsedEpisode.CleanTitle = seriesName;
Logger.Trace("Episode Parsed. {0}", parsedEpisode);
return parsedEpisode;
}
public static string ParseSeriesName(string title)
{
Logger.Trace("Parsing string '{0}'", title);
foreach (var regex in ReportTitleRegex)
{
var match = regex.Matches(title);
if (match.Count != 0)
{
var seriesName = NormalizeTitle(match[0].Groups["title"].Value);
Logger.Trace("Series Parsed. {0}", seriesName);
return seriesName;
}
}
return NormalizeTitle(title);
}
internal static Quality ParseQuality(string name)
{
Logger.Trace("Trying to parse quality for {0}", name);
name = name.Trim();
var normalizedName = NormalizeTitle(name);
var result = new Quality { QualityType = QualityTypes.Unknown };
result.Proper = normalizedName.Contains("proper");
if (normalizedName.Contains("dvd") || normalizedName.Contains("bdrip") || normalizedName.Contains("brrip"))
{
result.QualityType = QualityTypes.DVD;
return result;
}
if (normalizedName.Contains("xvid") || normalizedName.Contains("divx"))
{
if (normalizedName.Contains("bluray"))
{
result.QualityType = QualityTypes.DVD;
return result;
}
result.QualityType = QualityTypes.SDTV;
return result;
}
if (normalizedName.Contains("bluray"))
{
if (normalizedName.Contains("720p"))
{
result.QualityType = QualityTypes.Bluray720p;
return result;
}
if (normalizedName.Contains("1080p"))
{
result.QualityType = QualityTypes.Bluray1080p;
return result;
}
result.QualityType = QualityTypes.Bluray720p;
return result;
}
if (normalizedName.Contains("webdl"))
{
result.QualityType = QualityTypes.WEBDL;
return result;
}
if (normalizedName.Contains("x264") || normalizedName.Contains("h264") || normalizedName.Contains("720p"))
{
result.QualityType = QualityTypes.HDTV;
return result;
}
//Based on extension
if (result.QualityType == QualityTypes.Unknown)
{
try
{
switch (Path.GetExtension(name).ToLower())
{
case ".avi":
case ".xvid":
case ".wmv":
case ".mp4":
{
result.QualityType = QualityTypes.SDTV;
break;
}
case ".mkv":
{
result.QualityType = QualityTypes.HDTV;
break;
}
}
}
catch (ArgumentException)
{
//Swallow exception for cases where string contains illegal
//path characters.
}
}
if ((normalizedName.Contains("sdtv") || (result.QualityType == QualityTypes.Unknown && normalizedName.Contains("hdtv"))) && !normalizedName.Contains("mpeg"))
{
result.QualityType = QualityTypes.SDTV;
return result;
}
return result;
}
internal static LanguageType ParseLanguage(string title)
{
var lowerTitle = title.ToLower();
if (lowerTitle.Contains("english"))
return LanguageType.English;
if (lowerTitle.Contains("french"))
return LanguageType.French;
if (lowerTitle.Contains("spanish"))
return LanguageType.Spanish;
if (lowerTitle.Contains("german"))
{
//Make sure it doesn't contain Germany (Since we're not using REGEX for all this)
if (!lowerTitle.Contains("germany"))
return LanguageType.German;
}
if (lowerTitle.Contains("italian"))
return LanguageType.Italian;
if (lowerTitle.Contains("danish"))
return LanguageType.Danish;
if (lowerTitle.Contains("dutch"))
return LanguageType.Dutch;
if (lowerTitle.Contains("japanese"))
return LanguageType.Japanese;
if (lowerTitle.Contains("cantonese"))
return LanguageType.Cantonese;
if (lowerTitle.Contains("mandarin"))
return LanguageType.Mandarin;
if (lowerTitle.Contains("korean"))
return LanguageType.Korean;
if (lowerTitle.Contains("russian"))
return LanguageType.Russian;
if (lowerTitle.Contains("polish"))
return LanguageType.Polish;
if (lowerTitle.Contains("vietnamese"))
return LanguageType.Vietnamese;
if (lowerTitle.Contains("swedish"))
return LanguageType.Swedish;
if (lowerTitle.Contains("norwegian"))
return LanguageType.Norwegian;
if (lowerTitle.Contains("finnish"))
return LanguageType.Finnish;
if (lowerTitle.Contains("turkish"))
return LanguageType.Turkish;
if (lowerTitle.Contains("portuguese"))
return LanguageType.Portuguese;
return LanguageType.English;
}
/// <summary>
/// Normalizes the title. removing all non-word characters as well as common tokens
/// such as 'the' and 'and'
/// </summary>
/// <param name = "title">title</param>
/// <returns></returns>
public static string NormalizeTitle(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 long GetReportSize(string sizeString)
{
var match = ReportSizeRegex.Matches(sizeString);
if (match.Count != 0)
{
var value = Convert.ToDecimal(Regex.Replace(match[0].Groups["value"].Value, "\\,", ""));
var unit = match[0].Groups["unit"].Value;
if (unit.Equals("MB", StringComparison.InvariantCultureIgnoreCase) || unit.Equals("MiB", StringComparison.InvariantCultureIgnoreCase))
return Convert.ToInt64(value * 1048576L);
if (unit.Equals("GB", StringComparison.InvariantCultureIgnoreCase) || unit.Equals("GiB", StringComparison.InvariantCultureIgnoreCase))
return Convert.ToInt64(value * 1073741824L);
}
return 0;
}
}
}