Don't try to find lines of text chunks if there are no text chunks

mcharters · mcharters · commit be9ac544e127 · 2016-01-14T15:08:46.000-05:00
diff --git a/src/main/java/technology/tabula/TextChunk.java b/src/main/java/technology/tabula/TextChunk.java
@@ -192,8 +192,13 @@ public static boolean allSameChar(List<TextChunk> textChunks) {
     }
     
     public static List<Line> groupByLines(List<TextChunk> textChunks) {
-        float bbwidth = Rectangle.boundingBoxOf(textChunks).width;
         List<Line> lines = new ArrayList<Line>();
+
+        if (textChunks.size() == 0) {
+            return lines;
+        }
+
+        float bbwidth = Rectangle.boundingBoxOf(textChunks).width;
         
         Line l = new Line();
         l.addTextChunk(textChunks.get(0));
