* added CLI for specifically fetching missing subtitles

source/net/sourceforge/filebot/cli/ArgumentBean.java

@@ -37,6 +37,9 @@ public class ArgumentBean {
 	@Option(name = "-get-subtitles", usage = "Fetch subtitles", metaVar = "fileset")
 	public boolean getSubtitles;
 	
+	@Option(name = "-get-missing-subtitles", usage = "Fetch missing subtitles", metaVar = "fileset")
+	public boolean getMissingSubtitles;
+	
 	@Option(name = "--q", usage = "Search query", metaVar = "title")
 	public String query;
 	
@@ -84,7 +87,7 @@ public class ArgumentBean {
 	
 
 	public boolean runCLI() {
-		return rename || getSubtitles || check || list || mediaInfo || script != null;
+		return rename || getSubtitles || getMissingSubtitles || check || list || mediaInfo || script != null;
 	}
 	
 

source/net/sourceforge/filebot/cli/ArgumentProcessor.java

@@ -9,7 +9,6 @@ import java.io.File;
 import java.io.InputStreamReader;
 import java.security.AccessController;
 import java.util.LinkedHashSet;
-import java.util.List;
 import java.util.Set;
 
 import javax.script.Bindings;
@@ -63,8 +62,9 @@ public class ArgumentProcessor {
 				Set<File> files = new LinkedHashSet<File>(args.getFiles(true));
 				
 				if (args.getSubtitles) {
-					List<File> subtitles = cli.getSubtitles(files, args.query, args.lang, args.output, args.encoding, !args.nonStrict);
-					files.addAll(subtitles);
+					files.addAll(cli.getSubtitles(files, args.query, args.lang, args.output, args.encoding, !args.nonStrict));
+				} else if (args.getMissingSubtitles) {
+					files.addAll(cli.getMissingSubtitles(files, args.query, args.lang, args.output, args.encoding, !args.nonStrict));
 				}
 				
 				if (args.rename) {

source/net/sourceforge/filebot/cli/CmdlineInterface.java

@@ -15,6 +15,9 @@ public interface CmdlineInterface {
 	List<File> getSubtitles(Collection<File> files, String query, String lang, String output, String encoding, boolean strict) throws Exception;
 	
 
+	List<File> getMissingSubtitles(Collection<File> files, String query, String lang, String output, String encoding, boolean strict) throws Exception;
+	
+
 	boolean check(Collection<File> files) throws Exception;
 	
 

source/net/sourceforge/filebot/cli/CmdlineOperations.java

@@ -13,6 +13,7 @@ import static net.sourceforge.filebot.subtitle.SubtitleUtilities.*;
 import static net.sourceforge.tuned.FileUtilities.*;
 
 import java.io.File;
+import java.io.FileFilter;
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
@@ -451,6 +452,40 @@ public class CmdlineOperations implements CmdlineInterface {
 	}
 	
 
+	public List<File> getMissingSubtitles(Collection<File> files, String query, String languageName, String output, String csn, boolean strict) throws Exception {
+		List<File> videoFiles = filter(filter(files, VIDEO_FILES), new FileFilter() {
+			
+			// save time on repeating filesystem calls
+			private final Map<File, File[]> cache = new HashMap<File, File[]>();
+			
+
+			@Override
+			public boolean accept(File video) {
+				File[] subtitlesByFolder = cache.get(video.getParentFile());
+				if (subtitlesByFolder == null) {
+					subtitlesByFolder = video.getParentFile().listFiles(SUBTITLE_FILES);
+					cache.put(video.getParentFile(), subtitlesByFolder);
+				}
+				
+				for (File subtitle : subtitlesByFolder) {
+					if (isDerived(subtitle, video))
+						return false;
+				}
+				
+				return true;
+			}
+		});
+		
+		if (videoFiles.isEmpty()) {
+			CLILogger.info("No missing subtitles");
+			return emptyList();
+		}
+		
+		CLILogger.finest(format("Missing subtitles for %d video files", videoFiles.size()));
+		return getSubtitles(videoFiles, query, languageName, output, csn, strict);
+	}
+	
+
 	private File downloadSubtitle(SubtitleDescriptor descriptor, File movieFile, SubtitleFormat outputFormat, Charset outputEncoding) throws Exception {
 		// fetch subtitle archive
 		CLILogger.info(format("Fetching [%s]", descriptor.getPath()));