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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.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|\sto\s){1,2}(?<episode>\d{1,2}(?!\d+)))+){2,}\W?(?!\\)",
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RegexOptions.IgnoreCase | RegexOptions.Compiled),
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//Single episodes or multi-episode (S01E05E06, S01E05-06, etc)
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new Regex(@"^(?<title>.+?)(?:\W+S?(?<season>\d{1,2}(?!\d+))(?:(?:\-|\.|[ex]|\s|\sto\s){1,2}(?<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|\sto\s){1,2}(?<episode>\d{1,2}(?!\d+)))+\W*)+\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?(?:\W(?<season>\d+)(?<episode>\d{2}))+\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|to)+(?<episode>\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?(?!\\)",
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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]264|\<|\>|\?|\*|\:|\||""",
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RegexOptions.IgnoreCase | RegexOptions.Compiled);
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/// <summary>
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/// Parses a file path into list of episodes it contains
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/// </summary>
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/// <param name = "path">Path of the file to parse</param>
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/// <returns>List of episodes contained in the file</returns>
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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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return ParseTitle(fileInfo.Name);
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}
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/// <summary>
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/// Parses a post title into list of episodes it contains
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/// </summary>
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/// <param name = "title">Title of the report</param>
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/// <returns>List of episodes contained in the post</returns>
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internal static EpisodeParseResult ParseTitle(string title)
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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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//Use only the filename, not the entire path
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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 seriesName = NormalizeTitle(match[0].Groups["title"].Value);
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int airyear;
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Int32.TryParse(match[0].Groups["airyear"].Value, out airyear);
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EpisodeParseResult parsedEpisode;
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if (airyear < 1)
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{
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int season;
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Int32.TryParse(match[0].Groups["season"].Value, out season);
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parsedEpisode = new EpisodeParseResult
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{
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CleanTitle = seriesName,
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SeasonNumber = season,
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EpisodeNumbers = new List<int>()
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};
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foreach (Match matchGroup in match)
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{
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var count = matchGroup.Groups["episode"].Captures.Count;
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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 (count > 0)
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{
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var first = Convert.ToInt32(matchGroup.Groups["episode"].Captures[0].Value);
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var last = Convert.ToInt32(matchGroup.Groups["episode"].Captures[count - 1].Value);
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for (int i = first; i <= last; i++)
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{
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parsedEpisode.EpisodeNumbers.Add(i);
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}
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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(match[0].Groups["airmonth"].Value);
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var airday = Convert.ToInt32(match[0].Groups["airday"].Value);
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parsedEpisode = new EpisodeParseResult
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{
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CleanTitle = seriesName,
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AirDate = new DateTime(airyear, airmonth, airday),
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Language = ParseLanguage(simpleTitle)
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};
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}
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parsedEpisode.Quality = ParseQuality(title);
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Logger.Trace("Episode Parsed. {0}", parsedEpisode);
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return parsedEpisode;
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}
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}
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Logger.Warn("Unable to parse text into episode info. {0}", title);
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return null;
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}
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/// <summary>
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/// Parses a post title into season it contains
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/// </summary>
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/// <param name = "title">Title of the report</param>
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/// <returns>Season information contained in the post</returns>
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internal static SeasonParseResult ParseSeasonInfo(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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int year;
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Int32.TryParse(match[0].Groups["year"].Value, out year);
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if (year < 1900 || year > DateTime.Now.Year + 1)
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{
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year = 0;
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}
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var seasonNumber = Convert.ToInt32(match[0].Groups["season"].Value);
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var result = new SeasonParseResult
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{
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SeriesTitle = seriesName,
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SeasonNumber = seasonNumber,
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Year = year,
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Quality = ParseQuality(title)
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};
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Logger.Trace("Season Parsed. {0}", result);
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return result;
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}
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}
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return null; //Return null
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}
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/// <summary>
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/// Parses a post title to find the series that relates to it
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/// </summary>
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/// <param name = "title">Title of the report</param>
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/// <returns>Normalized Series Name</returns>
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internal 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 String.Empty;
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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")))
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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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return NormalizeRegex.Replace(title, String.Empty).ToLower();
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}
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public static string NormalizePath(string path)
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{
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if (String.IsNullOrWhiteSpace(path))
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throw new ArgumentException("Path can not be null or empty");
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var info = new FileInfo(path);
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if (info.FullName.StartsWith(@"\\")) //UNC
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{
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return info.FullName.TrimEnd('/', '\\', ' ');
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}
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return info.FullName.Trim('/', '\\', ' ');
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}
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}
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}
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