Better logging for bad subtitle files

source/net/filebot/subtitle/MicroDVDReader.java

@@ -13,6 +13,11 @@ public class MicroDVDReader extends SubtitleReader {
 		super(source);
 	}
 
+	@Override
+	public String getFormatName() {
+		return "MicroDVD";
+	}
+
 	@Override
 	public SubtitleElement readNext() throws Exception {
 		String line = scanner.nextLine();

source/net/filebot/subtitle/SubRipReader.java

@@ -26,6 +26,11 @@ public class SubRipReader extends SubtitleReader {
 		tag = Pattern.compile("</?(b|u|i|font[^<>]*)>", Pattern.CASE_INSENSITIVE);
 	}
 
+	@Override
+	public String getFormatName() {
+		return "SubRip";
+	}
+
 	@Override
 	protected SubtitleElement readNext() throws Exception {
 		String number = scanner.nextLine();

source/net/filebot/subtitle/SubStationAlphaReader.java

@@ -1,14 +1,12 @@
 
 package net.filebot.subtitle;
 
-
 import java.text.DateFormat;
 import java.util.Arrays;
 import java.util.InputMismatchException;
 import java.util.List;
 import java.util.regex.Pattern;
 
-
 public class SubStationAlphaReader extends SubtitleReader {
 
 	private final DateFormat timeFormat = new SubtitleTimeFormat();
@@ -20,11 +18,14 @@ public class SubStationAlphaReader extends SubtitleReader {
 	private int formatIndexEnd;
 	private int formatIndexText;
 
-
 	public SubStationAlphaReader(Readable source) {
 		super(source);
 	}
 
+	@Override
+	public String getFormatName() {
+		return "SubStationAlpha";
+	}
 
 	private void readFormat() throws Exception {
 		// read format line (e.g. Format: Marked, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text)
@@ -48,7 +49,6 @@ public class SubStationAlphaReader extends SubtitleReader {
 		formatIndexText = lookup.indexOf("text");
 	}
 
-
 	@Override
 	public SubtitleElement readNext() throws Exception {
 		if (format == null) {
@@ -84,7 +84,6 @@ public class SubStationAlphaReader extends SubtitleReader {
 		return new SubtitleElement(start, end, resolve(text));
 	}
 
-
 	protected String resolve(String text) {
 		// remove tags
 		text = tag.matcher(text).replaceAll("");

source/net/filebot/subtitle/SubViewerReader.java

@@ -1,7 +1,6 @@
 
 package net.filebot.subtitle;
 
-
 import static java.util.regex.Pattern.*;
 import static net.filebot.util.StringUtilities.*;
 
@@ -10,17 +9,19 @@ import java.text.ParseException;
 import java.util.InputMismatchException;
 import java.util.regex.Pattern;
 
-
 public class SubViewerReader extends SubtitleReader {
 
 	private final DateFormat timeFormat = new SubtitleTimeFormat();
 	private final Pattern newline = compile(quote("[br]"), CASE_INSENSITIVE);
 
-
 	public SubViewerReader(Readable source) {
 		super(source);
 	}
 
+	@Override
+	public String getFormatName() {
+		return "SubViewer";
+	}
 
 	@Override
 	protected SubtitleElement readNext() throws Exception {

source/net/filebot/subtitle/SubtitleReader.java

@@ -17,6 +17,8 @@ public abstract class SubtitleReader implements Iterator<SubtitleElement>, Close
 		this.scanner = new Scanner(source);
 	}
 
+	public abstract String getFormatName();
+
 	protected abstract SubtitleElement readNext() throws Exception;
 
 	@Override
@@ -27,7 +29,7 @@ public abstract class SubtitleReader implements Iterator<SubtitleElement>, Close
 				current = readNext();
 			} catch (Exception e) {
 				// log and ignore
-				debug.warning("Illegal input: " + e.getMessage());
+				debug.warning(format("Failed to read %s subtitles: %s", getFormatName(), e.getMessage()));
 			}
 		}