Fixed: Quality parser now properly deals with releases with underscores as delimiter.

src/NzbDrone.Core.Test/ParserTests/QualityParserFixture.cs

@@ -55,6 +55,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("The.Girls.Next.Door.S03E06.DVDRip.XviD-WiDE", false)]
         [TestCase("The.Girls.Next.Door.S03E06.DVD.Rip.XviD-WiDE", false)]
         [TestCase("the.shield.1x13.circles.ws.xvidvd-tns", false)]
+        [TestCase("the_x-files.9x18.sunshine_days.ac3.ws_dvdrip_xvid-fov.avi", false)]
         public void should_parse_dvd_quality(string title, bool proper)
         {
             ParseAndVerifyQuality(title, Quality.DVD, proper);

src/NzbDrone.Core/Parser/QualityParser.cs

@@ -13,17 +13,29 @@ namespace NzbDrone.Core.Parser
     {
         private static readonly Logger Logger = LogManager.GetCurrentClassLogger();
 
-        private static readonly Regex SourceRegex = new Regex(@"(?<bluray>BluRay)|
+        private static readonly Regex SourceRegex = new Regex(@"\b(?:
+                                                                (?<bluray>BluRay)|
                                                                 (?<webdl>WEB-DL|WEBDL|WEB\sDL|WEB\-DL|WebRip)|
                                                                 (?<hdtv>HDTV)|
-                                                                (?<bdrip>BDRiP)|(?<brrip>BRRip)|(?<dvd>\b(?:DVD|DVDRip|NTSC|PAL|xvidvd)\b)|
-                                                                (?<dsr>WS\sDSR|WS_DSR|WS\.DSR|DSR)|(?<pdtv>PDTV)|(?<sdtv>SDTV)",
+                                                                (?<bdrip>BDRiP)|
+                                                                (?<brrip>BRRip)|
+                                                                (?<dvd>DVD|DVDRip|NTSC|PAL|xvidvd)|
+                                                                (?<dsr>WS\sDSR|WS_DSR|WS\.DSR|DSR)|
+                                                                (?<pdtv>PDTV)|
+                                                                (?<sdtv>SDTV)
+                                                                )\b",
                                                                 RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);
 
-        private static readonly Regex ResolutionRegex = new Regex(@"(?<_480p>480p)|(?<_720p>720p)|(?<_1080p>1080p)",
+        private static readonly Regex RawHDRegex = new Regex(@"\b(?<rawhd>TrollHD|RawHD)\b",
                                                                 RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
-        private static readonly Regex CodecRegex = new Regex(@"(?<x264>x264)|(?<h264>h264)|(?<xvidhd>XvidHD)|(?<xvid>Xvid)|(?<divx>divx)",
+        private static readonly Regex ProperRegex = new Regex(@"\b(?<proper>proper|repack)\b",
+                                                                RegexOptions.Compiled | RegexOptions.IgnoreCase);
+
+        private static readonly Regex ResolutionRegex = new Regex(@"\b(?:(?<_480p>480p)|(?<_720p>720p)|(?<_1080p>1080p))\b",
+                                                                RegexOptions.Compiled | RegexOptions.IgnoreCase);
+
+        private static readonly Regex CodecRegex = new Regex(@"\b(?:(?<x264>x264)|(?<h264>h264)|(?<xvidhd>XvidHD)|(?<xvid>Xvid)|(?<divx>divx))\b",
                                                                 RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
         public static QualityModel ParseQuality(string name)
@@ -31,19 +43,20 @@ namespace NzbDrone.Core.Parser
             Logger.Debug("Trying to parse quality for {0}", name);
 
             name = name.Trim();
-            var normalizedName = name.CleanSeriesTitle();
+            var normalizedName = name.Replace('_', ' ').Trim().ToLower();
             var result = new QualityModel { Quality = Quality.Unknown };
-            result.Proper = (normalizedName.Contains("proper") || normalizedName.Contains("repack"));
 
-            if (normalizedName.Contains("trollhd") || normalizedName.Contains("rawhd"))
+            result.Proper = ProperRegex.IsMatch(normalizedName);
+
+            if (RawHDRegex.IsMatch(normalizedName))
             {
                 result.Quality = Quality.RAWHD;
                 return result;
             }
             
-            var sourceMatch = SourceRegex.Match(name);
-            var resolution = ParseResolution(name);
-            var codecRegex = CodecRegex.Match(name);
+            var sourceMatch = SourceRegex.Match(normalizedName);
+            var resolution = ParseResolution(normalizedName);
+            var codecRegex = CodecRegex.Match(normalizedName);
 
             if (sourceMatch.Groups["bluray"].Success)
             {