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LanguageParser.cs
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LanguageParser.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.Common.Extensions;
using NzbDrone.Common.Instrumentation;
using NzbDrone.Core.Languages;
namespace NzbDrone.Core.Parser
{
public static class LanguageParser
{
private static readonly Logger Logger = NzbDroneLogger.GetLogger(typeof(LanguageParser));
private static readonly Regex LanguageRegex = new Regex(@"(?:\W|_|^)(?<italian>\b(?:ita|italian)\b)|
(?<german>german\b|videomann|ger[. ]dub)|
(?<flemish>flemish)|
(?<bulgarian>bgaudio)|
(?<romanian>rodubbed)|
(?<brazilian>dublado)|
(?<greek>greek)|
(?<french>\b(?:FR|VO|VF|VFF|VFQ|VFI|VF2|TRUEFRENCH|FRE|FRA)\b)|
(?<russian>\b(?:rus|ru)\b)|
(?<english>\beng\b)|
(?<hungarian>\b(?:HUNDUB|HUN)\b)|
(?<hebrew>\b(?:HebDub|HebDubbed)\b)|
(?<polish>\b(?:PL\W?DUB|DUB\W?PL|LEK\W?PL|PL\W?LEK)\b)|
(?<chinese>\[(?:CH[ST]|BIG5|GB)\]|简|繁|字幕)|
(?<ukrainian>(?:(?:\dx)?UKR))|
(?<spanish>\b(?:español|castellano)\b)|
(?<latvian>\b(?:lat|lav|lv)\b)|
(?<telugu>\btel\b)|
(?<vietnamese>\bVIE\b)",
RegexOptions.IgnoreCase | RegexOptions.Compiled | RegexOptions.IgnorePatternWhitespace);
private static readonly Regex CaseSensitiveLanguageRegex = new Regex(@"(?:(?i)(?<!SUB[\W|_|^]))(?:(?<lithuanian>\bLT\b)|
(?<czech>\bCZ\b)|
(?<polish>\bPL\b)|
(?<bulgarian>\bBG\b))(?:(?i)(?![\W|_|^]SUB))|
(?<slovak>\bSK\b)",
RegexOptions.Compiled | RegexOptions.IgnorePatternWhitespace);
private static readonly Regex GermanDualLanguageRegex = new (@"(?<!WEB[-_. ]?)\bDL\b", RegexOptions.Compiled | RegexOptions.IgnoreCase);
private static readonly Regex GermanMultiLanguageRegex = new (@"\bML\b", RegexOptions.Compiled | RegexOptions.IgnoreCase);
private static readonly Regex SubtitleLanguageRegex = new Regex(".+?[-_. ](?<iso_code>[a-z]{2,3})([-_. ](?<tags>full|forced|foreign|default|cc|psdh|sdh))*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
public static List<Language> ParseLanguages(string title)
{
var lowerTitle = title.ToLower();
var languages = new List<Language>();
if (lowerTitle.Contains("english"))
{
languages.Add(Language.English);
}
if (lowerTitle.Contains("french"))
{
languages.Add(Language.French);
}
if (lowerTitle.Contains("spanish"))
{
languages.Add(Language.Spanish);
}
if (lowerTitle.Contains("danish"))
{
languages.Add(Language.Danish);
}
if (lowerTitle.Contains("dutch"))
{
languages.Add(Language.Dutch);
}
if (lowerTitle.Contains("japanese"))
{
languages.Add(Language.Japanese);
}
if (lowerTitle.Contains("icelandic"))
{
languages.Add(Language.Icelandic);
}
if (lowerTitle.Contains("mandarin") || lowerTitle.Contains("cantonese") || lowerTitle.Contains("chinese"))
{
languages.Add(Language.Chinese);
}
if (lowerTitle.Contains("korean"))
{
languages.Add(Language.Korean);
}
if (lowerTitle.Contains("russian"))
{
languages.Add(Language.Russian);
}
if (lowerTitle.Contains("romanian"))
{
languages.Add(Language.Romanian);
}
if (lowerTitle.Contains("hindi"))
{
languages.Add(Language.Hindi);
}
if (lowerTitle.Contains("arabic"))
{
languages.Add(Language.Arabic);
}
if (lowerTitle.Contains("thai"))
{
languages.Add(Language.Thai);
}
if (lowerTitle.Contains("bulgarian"))
{
languages.Add(Language.Bulgarian);
}
if (lowerTitle.Contains("polish"))
{
languages.Add(Language.Polish);
}
if (lowerTitle.Contains("vietnamese"))
{
languages.Add(Language.Vietnamese);
}
if (lowerTitle.Contains("swedish"))
{
languages.Add(Language.Swedish);
}
if (lowerTitle.Contains("norwegian"))
{
languages.Add(Language.Norwegian);
}
if (lowerTitle.Contains("finnish"))
{
languages.Add(Language.Finnish);
}
if (lowerTitle.Contains("turkish"))
{
languages.Add(Language.Turkish);
}
if (lowerTitle.Contains("portuguese"))
{
languages.Add(Language.Portuguese);
}
if (lowerTitle.Contains("brazilian"))
{
languages.Add(Language.PortugueseBR);
}
if (lowerTitle.Contains("hungarian"))
{
languages.Add(Language.Hungarian);
}
if (lowerTitle.Contains("hebrew"))
{
languages.Add(Language.Hebrew);
}
if (lowerTitle.Contains("ukrainian"))
{
languages.Add(Language.Ukrainian);
}
if (lowerTitle.Contains("persian"))
{
languages.Add(Language.Persian);
}
if (lowerTitle.Contains("bengali"))
{
languages.Add(Language.Bengali);
}
if (lowerTitle.Contains("slovak"))
{
languages.Add(Language.Slovak);
}
if (lowerTitle.Contains("latvian"))
{
languages.Add(Language.Latvian);
}
if (lowerTitle.Contains("latino"))
{
languages.Add(Language.SpanishLatino);
}
if (lowerTitle.Contains("catalan"))
{
languages.Add(Language.Catalan);
}
if (lowerTitle.Contains("tamil"))
{
languages.Add(Language.Tamil);
}
if (lowerTitle.Contains("telugu"))
{
languages.Add(Language.Telugu);
}
// Case sensitive
var caseSensitiveMatches = CaseSensitiveLanguageRegex.Matches(title);
foreach (Match match in caseSensitiveMatches)
{
if (match.Groups["lithuanian"].Captures.Any())
{
languages.Add(Language.Lithuanian);
}
if (match.Groups["czech"].Captures.Any())
{
languages.Add(Language.Czech);
}
if (match.Groups["polish"].Captures.Any())
{
languages.Add(Language.Polish);
}
if (match.Groups["bulgarian"].Captures.Any())
{
languages.Add(Language.Bulgarian);
}
if (match.Groups["slovak"].Captures.Any())
{
languages.Add(Language.Slovak);
}
}
var matches = LanguageRegex.Matches(title);
foreach (Match match in matches)
{
if (match.Groups["italian"].Captures.Any())
{
languages.Add(Language.Italian);
}
if (match.Groups["german"].Captures.Any())
{
languages.Add(Language.German);
}
if (match.Groups["flemish"].Captures.Any())
{
languages.Add(Language.Flemish);
}
if (match.Groups["greek"].Captures.Any())
{
languages.Add(Language.Greek);
}
if (match.Groups["french"].Success)
{
languages.Add(Language.French);
}
if (match.Groups["russian"].Success)
{
languages.Add(Language.Russian);
}
if (match.Groups["english"].Success)
{
languages.Add(Language.English);
}
if (match.Groups["bulgarian"].Success)
{
languages.Add(Language.Bulgarian);
}
if (match.Groups["brazilian"].Success)
{
languages.Add(Language.PortugueseBR);
}
if (match.Groups["dutch"].Success)
{
languages.Add(Language.Dutch);
}
if (match.Groups["hungarian"].Success)
{
languages.Add(Language.Hungarian);
}
if (match.Groups["hebrew"].Success)
{
languages.Add(Language.Hebrew);
}
if (match.Groups["polish"].Success)
{
languages.Add(Language.Polish);
}
if (match.Groups["chinese"].Success)
{
languages.Add(Language.Chinese);
}
if (match.Groups["spanish"].Success)
{
languages.Add(Language.Spanish);
}
if (match.Groups["ukrainian"].Success)
{
languages.Add(Language.Ukrainian);
}
if (match.Groups["latvian"].Success)
{
languages.Add(Language.Latvian);
}
if (match.Groups["romanian"].Success)
{
languages.Add(Language.Romanian);
}
if (match.Groups["telugu"].Success)
{
languages.Add(Language.Telugu);
}
if (match.Groups["vietnamese"].Success)
{
languages.Add(Language.Vietnamese);
}
}
if (!languages.Any())
{
languages.Add(Language.Unknown);
}
if (languages.Count == 1 && languages.Single() == Language.German)
{
if (GermanDualLanguageRegex.IsMatch(title))
{
Logger.Trace("Adding original language because the release title contains German DL tag");
languages.Add(Language.Original);
}
else if (GermanMultiLanguageRegex.IsMatch(title))
{
Logger.Trace("Adding original language and English because the release title contains German ML tag");
languages.Add(Language.Original);
languages.Add(Language.English);
}
}
return languages.DistinctBy(l => (int)l).ToList();
}
public static List<string> ParseLanguageTags(string fileName)
{
try
{
var simpleFilename = Path.GetFileNameWithoutExtension(fileName);
var match = SubtitleLanguageRegex.Match(simpleFilename);
var languageTags = match.Groups["tags"].Captures
.Where(tag => !tag.Value.Empty())
.Select(tag => tag.Value.ToLower());
return languageTags.ToList();
}
catch (Exception ex)
{
Logger.Debug(ex, "Failed parsing language tags from subtitle file: {0}", fileName);
}
return new List<string>();
}
public static Language ParseSubtitleLanguage(string fileName)
{
try
{
Logger.Debug("Parsing language from subtitle file: {0}", fileName);
var simpleFilename = Path.GetFileNameWithoutExtension(fileName);
var languageMatch = SubtitleLanguageRegex.Match(simpleFilename);
if (languageMatch.Success)
{
var isoCode = languageMatch.Groups["iso_code"].Value;
var isoLanguage = IsoLanguages.Find(isoCode.ToLower());
return isoLanguage?.Language ?? Language.Unknown;
}
foreach (var language in Language.All)
{
if (simpleFilename.EndsWith(language.ToString(), StringComparison.OrdinalIgnoreCase))
{
return language;
}
}
Logger.Debug("Unable to parse langauge from subtitle file: {0}", fileName);
}
catch (Exception)
{
Logger.Debug("Failed parsing langauge from subtitle file: {0}", fileName);
}
return Language.Unknown;
}
}
}