wumpz · wumpz · commit c56423e25505 · 2017-04-13T14:22:07.000+02:00
diff --git a/src/main/java/difflib/algorithm/myers/MyersDiff.java b/src/main/java/difflib/algorithm/myers/MyersDiff.java
@@ -33,15 +33,7 @@
 import java.util.Objects;
 
 /**
- * A clean-room implementation of <a href="http://www.cs.arizona.edu/people/gene/">
- * Eugene Myers</a> differencing algorithm.
- *
- * <p>
- * See the paper at <a href="http://www.cs.arizona.edu/people/gene/PAPERS/diff.ps">
- * http://www.cs.arizona.edu/people/gene/PAPERS/diff.ps</a></p>
- *
- * @author <a href="mailto:juanco@suigeneris.org">Juanco Anez</a>
- * @param T The type of the compared elements in the 'lines'.
+ * A clean-room implementation of Eugene Myers greedy differencing algorithm.
  */
 public final class MyersDiff<T> implements DiffAlgorithm<T> {
 
@@ -116,8 +108,8 @@ private PathNode buildPath(final List<T> orig, final List<T> rev)
                 final int kplus = kmiddle + 1;
                 final int kminus = kmiddle - 1;
                 PathNode prev = null;
-
                 int i;
+                
                 if ((k == -d) || (k != d && diagonal[kminus].i < diagonal[kplus].i)) {
                     i = diagonal[kplus].i;
                     prev = diagonal[kplus];
diff --git a/src/main/java/difflib/algorithm/myers/package.html b/src/main/java/difflib/algorithm/myers/package.html
diff --git a/src/main/java/difflib/text/DiffRowGenerator.java b/src/main/java/difflib/text/DiffRowGenerator.java
@@ -172,6 +172,10 @@ public static Builder create() {
         return new Builder();
     }
 
+    public static final Equalizer<String> IGNORE_WHITESPACE_EQUALIZER = (original, revised) 
+            -> original.trim().replaceAll("\\s+", " ").equals(revised.trim().replaceAll("\\s+", " "));
+    public static final Equalizer<String> DEFAULT_EQUALIZER = Object::equals;
+    
     private DiffRowGenerator(Builder builder) {
         showInlineDiffs = builder.showInlineDiffs;
         ignoreWhiteSpaces = builder.ignoreWhiteSpaces;
@@ -180,16 +184,7 @@ private DiffRowGenerator(Builder builder) {
         columnWidth = builder.columnWidth;
         mergeOriginalRevised = builder.mergeOriginalRevised;
         inlineDiffByWord = builder.inlineDiffByWord;
-        equalizer = new Equalizer<String>() {
-            @Override
-            public boolean equals(String original, String revised) {
-                if (ignoreWhiteSpaces) {
-                    return original.trim().replaceAll("\\s+", " ").equals(revised.trim().replaceAll("\\s+", " "));
-                } else {
-                    return original.equals(revised);
-                }
-            }
-        };
+        equalizer = ignoreWhiteSpaces?IGNORE_WHITESPACE_EQUALIZER:DEFAULT_EQUALIZER;
     }
 
     /**
