Add support for sentences.

Author: vmariano

Diff for: diff.js

@@ -196,13 +196,19 @@
       return retLines;
     };
 
-    return {
-      Diff: Diff,
+    var SentenceDiff = new Diff();
+    SentenceDiff.tokenize = function (value) {
+      return removeEmpty(value.split(/(\S.+?[.!?])(?=\s+|$)/));
+    };
+
+  return {
+    Diff: Diff,
 
       diffChars: function(oldStr, newStr) { return CharDiff.diff(oldStr, newStr); },
       diffWords: function(oldStr, newStr) { return WordDiff.diff(oldStr, newStr); },
       diffWordsWithSpace: function(oldStr, newStr) { return WordWithSpaceDiff.diff(oldStr, newStr); },
       diffLines: function(oldStr, newStr) { return LineDiff.diff(oldStr, newStr); },
+      diffSentences: function(oldStr, newStr) { return SentenceDiff.diff(oldStr, newStr); },
 
       diffCss: function(oldStr, newStr) { return CssDiff.diff(oldStr, newStr); },
 

Diff for: test/diffTest.js

@@ -69,6 +69,19 @@ describe('#diffWordsWithSpace', function() {
   });
 });
 
+describe('#diffSentences', function() {
+
+  it('Should diff Sentences', function() {
+    var diffResult = diff.diffSentences('New Value.', 'New ValueMoreData.');
+    diff.convertChangesToXML(diffResult).should.equal('<ins>New ValueMoreData.</ins><del>New Value.</del>');
+  });
+
+  it('should diff only the last sentence', function() {
+    var diffResult = diff.diffSentences('Here im. Rock you like old man.', 'Here im. Rock you like hurricane.');
+    diff.convertChangesToXML(diffResult).should.equal('Here im. <ins>Rock you like hurricane.</ins><del>Rock you like old man.</del>');
+  });
+});
+
 // CSS Diff
 describe('#diffCss', function() {
   it('should diff css', function() {