* improved auto episode list matching

source/net/sourceforge/filebot/FileBotUtilities.java

@@ -100,6 +100,18 @@ public final class FileBotUtilities {
 	public static final FileFilter LIST_FILES = new ExtensionFileFilter("txt", "list", "");
 	public static final FileFilter SUBTITLE_FILES = new ExtensionFileFilter("srt", "sub", "ssa", "ass", "smi");
 	
+	/**
+	 * This filter does not filter by extension, but file size. All files larger than 10 MB
+	 * will be accepted.
+	 */
+	public static final FileFilter MOVIE_FILES = new FileFilter() {
+		
+		@Override
+		public boolean accept(File file) {
+			return file.length() > 10 * FileUtilities.MEGA;
+		}
+	};
+	
 	
 	/**
 	 * Dummy constructor to prevent instantiation.

source/net/sourceforge/filebot/similarity/SeriesNameMatcher.java

@@ -26,23 +26,13 @@ public class SeriesNameMatcher {
 	
 	protected final SeasonEpisodeMatcher seasonEpisodeMatcher = new SeasonEpisodeMatcher();
 	
-	protected final int threshold;
-	
-	
-	public SeriesNameMatcher(int threshold) {
-		if (threshold < 0)
-			throw new IllegalArgumentException("threshold must be greater than 0");
-		
-		this.threshold = threshold;
-	}
-	
 	
 	public String match(File file) {
 		return match(file.getName(), file.getParent());
 	}
 	
 
-	public Collection<String> matchAll(File... files) {
+	public Collection<String> matchAll(File[] files) {
 		SeriesNameCollection seriesNames = new SeriesNameCollection();
 		
 		// group files by parent folder
@@ -62,14 +52,17 @@ public class SeriesNameMatcher {
 	}
 	
 
-	public Collection<String> matchAll(String... names) {
+	public Collection<String> matchAll(String[] names) {
 		SeriesNameCollection seriesNames = new SeriesNameCollection();
 		
+		// allow matching of a small number of episodes, by setting threshold = length if length < 5
+		int threshold = Math.min(names.length, 5);
+		
 		// 1. use pattern matching with frequency threshold
-		seriesNames.addAll(flatMatchAll(names));
+		seriesNames.addAll(flatMatchAll(names, threshold));
 		
 		// 2. match common word sequences
-		seriesNames.addAll(deepMatchAll(names));
+		seriesNames.addAll(deepMatchAll(names, threshold));
 		
 		return seriesNames;
 	}
@@ -82,7 +75,7 @@ public class SeriesNameMatcher {
 	 * @return series names that have been matched one or multiple times depending on the
 	 *         threshold
 	 */
-	private Collection<String> flatMatchAll(String[] names) {
+	private Collection<String> flatMatchAll(String[] names, int threshold) {
 		ThresholdCollection<String> seriesNames = new ThresholdCollection<String>(threshold, String.CASE_INSENSITIVE_ORDER);
 		
 		for (String name : names) {
@@ -103,7 +96,7 @@ public class SeriesNameMatcher {
 	 * @param names list of episode names
 	 * @return all common word sequences that have been found
 	 */
-	private Collection<String> deepMatchAll(String[] names) {
+	private Collection<String> deepMatchAll(String[] names, int threshold) {
 		// can't use common word sequence matching for less than 2 names
 		if (names.length < 2 || names.length < threshold) {
 			return Collections.emptySet();
@@ -120,8 +113,8 @@ public class SeriesNameMatcher {
 		List<String> results = new ArrayList<String>();
 		
 		// split list in two and try to match common word sequence on those
-		results.addAll(deepMatchAll(Arrays.copyOfRange(names, 0, names.length / 2)));
-		results.addAll(deepMatchAll(Arrays.copyOfRange(names, names.length / 2, names.length)));
+		results.addAll(deepMatchAll(Arrays.copyOfRange(names, 0, names.length / 2), threshold));
+		results.addAll(deepMatchAll(Arrays.copyOfRange(names, names.length / 2, names.length), threshold));
 		
 		return results;
 	}
@@ -173,8 +166,9 @@ public class SeriesNameMatcher {
 	/**
 	 * Try to match a series name from the first common word sequence.
 	 * 
-	 * @param names various episode names (5 or more for accurate results)
+	 * @param names various episode names (at least two)
 	 * @return a word sequence all episode names have in common, or null
+	 * @throws IllegalArgumentException if less than 2 episode names are given
 	 */
 	public String matchByFirstCommonWordSequence(String... names) {
 		if (names.length < 2) {
@@ -301,7 +295,7 @@ public class SeriesNameMatcher {
 			int upper = 0;
 			int lower = 0;
 			
-			Scanner scanner = new Scanner(s); // Scanner has white space delimiter by default
+			Scanner scanner = new Scanner(s); // Scanner uses a white space delimiter by default
 			
 			while (scanner.hasNext()) {
 				char c = scanner.next().charAt(0);
@@ -312,7 +306,7 @@ public class SeriesNameMatcher {
 					upper++;
 			}
 			
-			// give upper case characters a slight boost
+			// give upper case characters a slight boost over lower case characters
 			return (lower + (upper * 1.01f)) / Math.abs(lower - upper);
 		}
 		

source/net/sourceforge/filebot/ui/panel/rename/AutoEpisodeListMatcher.java

@@ -2,16 +2,20 @@
 package net.sourceforge.filebot.ui.panel.rename;
 
 
+import static net.sourceforge.filebot.FileBotUtilities.MOVIE_FILES;
 import static net.sourceforge.filebot.FileBotUtilities.SUBTITLE_FILES;
 import static net.sourceforge.filebot.web.Episode.formatEpisodeNumbers;
-import static net.sourceforge.tuned.FileUtilities.FILES;
 
 import java.io.File;
+import java.io.FileFilter;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
@@ -26,52 +30,42 @@ import net.sourceforge.filebot.similarity.SimilarityMetric;
 import net.sourceforge.filebot.web.Episode;
 import net.sourceforge.filebot.web.EpisodeListClient;
 import net.sourceforge.filebot.web.SearchResult;
+import net.sourceforge.tuned.FileUtilities;
 
 
-class AutoEpisodeListMatcher extends SwingWorker<List<Match<FileEntry, Episode>>, Void> {
+class AutoEpisodeListMatcher extends SwingWorker<List<Match<File, Episode>>, Void> {
 	
-	private final List<FileEntry> remainingFiles = new ArrayList<FileEntry>();
-	
-	private final List<FileEntry> files;
+	private final List<File> files;
 	
 	private final EpisodeListClient client;
 	
 	private final Collection<SimilarityMetric> metrics;
 	
 	
-	public AutoEpisodeListMatcher(EpisodeListClient client, List<FileEntry> files, Collection<SimilarityMetric> metrics) {
+	public AutoEpisodeListMatcher(EpisodeListClient client, List<File> files, Collection<SimilarityMetric> metrics) {
 		this.client = client;
-		this.files = files;
-		this.metrics = metrics;
+		this.files = new LinkedList<File>(files);
+		this.metrics = new ArrayList<SimilarityMetric>(metrics);
 	}
 	
 
-	public Collection<FileEntry> remainingFiles() {
-		return Collections.unmodifiableCollection(remainingFiles);
+	public Collection<File> remainingFiles() {
+		return Collections.unmodifiableCollection(files);
 	}
 	
 
-	protected Collection<String> matchSeriesNames(List<FileEntry> episodes) {
-		File[] files = new File[episodes.size()];
-		
-		for (int i = 0; i < files.length; i++) {
-			files[i] = episodes.get(i).getFile();
-		}
-		
-		// allow matching of a small number of episodes, by setting threshold = length if length < 5
-		int threshold = Math.min(files.length, 5);
-		
-		return new SeriesNameMatcher(threshold).matchAll(files);
+	protected Collection<String> detectSeriesNames(Collection<File> files) {
+		// detect series name(s) from files
+		return new SeriesNameMatcher().matchAll(files.toArray(new File[files.size()]));
 	}
 	
 
-	@Override
-	protected List<Match<FileEntry, Episode>> doInBackground() throws Exception {
-		List<Callable<Collection<Episode>>> fetchTasks = new ArrayList<Callable<Collection<Episode>>>();
+	protected List<Episode> fetchEpisodeList(Collection<String> seriesNames) throws Exception {
+		List<Callable<Collection<Episode>>> tasks = new ArrayList<Callable<Collection<Episode>>>();
 		
-		// match series names and create episode list fetch tasks
-		for (final String seriesName : matchSeriesNames(files)) {
-			fetchTasks.add(new Callable<Collection<Episode>>() {
+		// detect series names and create episode list fetch tasks
+		for (final String seriesName : seriesNames) {
+			tasks.add(new Callable<Collection<Episode>>() {
 				
 				@Override
 				public Collection<Episode> call() throws Exception {
@@ -85,47 +79,78 @@ class AutoEpisodeListMatcher extends SwingWorker<List<Match<FileEntry, Episode>>
 			});
 		}
 		
-		if (fetchTasks.isEmpty()) {
+		if (tasks.isEmpty())
 			throw new IllegalArgumentException("Failed to auto-detect series name.");
-		}
 		
 		// fetch episode lists concurrently
-		List<Episode> episodeList = new ArrayList<Episode>();
-		ExecutorService executor = Executors.newFixedThreadPool(fetchTasks.size());
+		List<Episode> episodes = new ArrayList<Episode>();
+		ExecutorService executor = Executors.newFixedThreadPool(tasks.size());
 		
-		for (Future<Collection<Episode>> future : executor.invokeAll(fetchTasks)) {
-			episodeList.addAll(future.get());
+		for (Future<Collection<Episode>> future : executor.invokeAll(tasks)) {
+			episodes.addAll(future.get());
 		}
 		
+		// destroy background threads
 		executor.shutdown();
 		
-		List<Match<FileEntry, Episode>> matches = new ArrayList<Match<FileEntry, Episode>>();
+		return episodes;
+	}
 	
-		for (List<FileEntry> entryList : splitByFileType(files)) {
-			Matcher<FileEntry, Episode> matcher = new Matcher<FileEntry, Episode>(entryList, episodeList, metrics);
+
+	@Override
+	protected List<Match<File, Episode>> doInBackground() throws Exception {
+		
+		// focus on movie and subtitle files
+		List<File> mediaFiles = FileUtilities.filter(files, MOVIE_FILES, SUBTITLE_FILES);
+		
+		// detect series name and fetch episode list
+		List<Episode> episodes = fetchEpisodeList(detectSeriesNames(mediaFiles));
+		
+		List<Match<File, Episode>> matches = new ArrayList<Match<File, Episode>>();
+		
+		// group by subtitles first and then by files in general
+		for (List<File> filesPerType : mapByFileType(files, MOVIE_FILES, SUBTITLE_FILES).values()) {
+			Matcher<File, Episode> matcher = new Matcher<File, Episode>(filesPerType, episodes, metrics);
 			matches.addAll(matcher.match());
-			remainingFiles.addAll(matcher.remainingValues());
+		}
+		
+		// restore original order
+		Collections.sort(matches, new Comparator<Match<File, Episode>>() {
+			
+			@Override
+			public int compare(Match<File, Episode> o1, Match<File, Episode> o2) {
+				return files.indexOf(o1.getValue()) - files.indexOf(o2.getValue());
+			}
+		});
+		
+		// update remaining files
+		for (Match<File, Episode> match : matches) {
+			files.remove(match.getValue());
 		}
 		
 		return matches;
 	}
 	
 
-	@SuppressWarnings("unchecked")
-	protected Collection<List<FileEntry>> splitByFileType(Collection<FileEntry> files) {
-		List<FileEntry> subtitles = new ArrayList<FileEntry>();
-		List<FileEntry> other = new ArrayList<FileEntry>();
+	protected Map<FileFilter, List<File>> mapByFileType(Collection<File> files, FileFilter... filters) {
+		// initialize map, keep filter order
+		Map<FileFilter, List<File>> map = new HashMap<FileFilter, List<File>>(filters.length);
 		
-		for (FileEntry file : files) {
-			// check for for subtitles first, then files in general
-			if (SUBTITLE_FILES.accept(file.getFile())) {
-				subtitles.add(file);
-			} else if (FILES.accept(file.getFile())) {
-				other.add(file);
+		// initialize value lists
+		for (FileFilter filter : filters) {
+			map.put(filter, new ArrayList<File>());
+		}
+		
+		for (File file : files) {
+			for (FileFilter filter : filters) {
+				if (filter.accept(file)) {
+					// put each value into one group only
+					map.get(filter).add(file);
+					break;
+				}
 			}
 		}
 		
-		return Arrays.asList(other, subtitles);
+		return map;
 	}
-	
 }

source/net/sourceforge/filebot/ui/panel/rename/RenamePanel.java

@@ -7,6 +7,7 @@ import static net.sourceforge.tuned.ui.LoadingOverlayPane.LOADING_PROPERTY;
 import static net.sourceforge.filebot.FileBotUtilities.*;
 import java.awt.Insets;
 import java.awt.event.ActionEvent;
+import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.logging.Level;
@@ -33,6 +34,8 @@ import net.sourceforge.filebot.web.TheTVDBClient;
 import net.sourceforge.tuned.ExceptionUtil;
 import net.sourceforge.tuned.ui.ActionPopup;
 import net.sourceforge.tuned.ui.LoadingOverlayPane;
+import ca.odell.glazedlists.FunctionList;
+import ca.odell.glazedlists.FunctionList.Function;
 import ca.odell.glazedlists.event.ListEvent;
 import ca.odell.glazedlists.event.ListEventListener;
 
@@ -156,10 +159,22 @@ public class RenamePanel extends FileBotPanel {
 
 		@Override
 		public void actionPerformed(ActionEvent evt) {
-			if (model.files().isEmpty() || isAutoMatchInProgress())
+			if (model.files().isEmpty() || isAutoMatchInProgress()) {
 				return;
+			}
 			
-			AutoEpisodeListMatcher worker = new AutoEpisodeListMatcher(client, new ArrayList<FileEntry>(model.files()), matchAction.getMetrics()) {
+			// clear names list
+			model.names().clear();
+			
+			List<File> files = new FunctionList<FileEntry, File>(model.files(), new Function<FileEntry, File>() {
+				
+				@Override
+				public File evaluate(FileEntry entry) {
+					return entry.getFile();
+				}
+			});
+			
+			AutoEpisodeListMatcher worker = new AutoEpisodeListMatcher(client, files, matchAction.getMetrics()) {
 				
 				@Override
 				protected void done() {
@@ -172,15 +187,15 @@ public class RenamePanel extends FileBotPanel {
 						
 						List<StringEntry> invalidNames = new ArrayList<StringEntry>();
 						
-						for (Match<FileEntry, Episode> match : get()) {
+						for (Match<File, Episode> match : get()) {
 							StringEntry name = new StringEntry(match.getCandidate());
 							
 							if (isInvalidFileName(name.toString())) {
 								invalidNames.add(name);
 							}
 							
-							names.add(new StringEntry(name));
-							files.add(match.getValue());
+							names.add(name);
+							files.add(new FileEntry(match.getValue()));
 						}
 						
 						if (!invalidNames.isEmpty()) {
@@ -193,13 +208,15 @@ public class RenamePanel extends FileBotPanel {
 							}
 						}
 						
+						// add remaining file entries
+						for (File file : remainingFiles()) {
+							files.add(new FileEntry(file));
+						}
+						
 						model.clear();
 						
 						model.names().addAll(names);
 						model.files().addAll(files);
-						
-						// add remaining file entries again
-						model.files().addAll(remainingFiles());
 					} catch (Exception e) {
 						Logger.getLogger("ui").log(Level.WARNING, ExceptionUtil.getRootCause(e).getMessage(), e);
 					}

source/net/sourceforge/tuned/FileUtilities.java

@@ -4,6 +4,8 @@ package net.sourceforge.tuned;
 
 import java.io.File;
 import java.io.FileFilter;
+import java.util.ArrayList;
+import java.util.List;
 
 
 public final class FileUtilities {
@@ -115,6 +117,22 @@ public final class FileUtilities {
 		return true;
 	}
 	
+
+	public static List<File> filter(Iterable<File> files, FileFilter... filters) {
+		List<File> accepted = new ArrayList<File>();
+		
+		for (File file : files) {
+			for (FileFilter filter : filters) {
+				if (filter.accept(file)) {
+					accepted.add(file);
+					break;
+				}
+			}
+		}
+		
+		return accepted;
+	}
+	
 	public static final FileFilter FOLDERS = new FileFilter() {
 		
 		@Override

test/net/sourceforge/filebot/similarity/SeriesNameMatcherTest.java

@@ -12,7 +12,7 @@ import org.junit.Test;
 
 public class SeriesNameMatcherTest {
 	
-	private static SeriesNameMatcher matcher = new SeriesNameMatcher(5);
+	private static SeriesNameMatcher matcher = new SeriesNameMatcher();
 	
 	
 	@Test