public void WordTests()
{
Word w1;
Word w2;
w1 = new Word("", "");
w2 = new Word("", " ");
Assert.AreEqual("", w1.TheWord);
Assert.AreEqual("", w1.Whitespace);
Assert.AreEqual("", w1.ToString());
Assert.AreEqual("", w2.TheWord);
Assert.AreEqual(" ", w2.Whitespace);
Assert.AreEqual(" ", w2.ToString());
Assert.AreEqual(w1, w2);
Assert.AreEqual(w1.GetHashCode(), w2.GetHashCode());
w1 = new Word("foo", " ");
w2 = new Word("foo", "");
Assert.AreEqual("foo", w1.TheWord);
Assert.AreEqual("foo ", w1.ToString());
Assert.AreEqual("foo", w2.ToString());
Assert.AreEqual(w1, w2);
Assert.AreEqual(w1.GetHashCode(), w2.GetHashCode());
w2 = new Word("Foo", "");
Assert.AreNotEqual(w1, w2);
Assert.AreNotEqual(w1.GetHashCode(), w2.GetHashCode());
}
private static void WhitespaceDiff(StringBuilder res, Word left, Word right)
{
if (left.Whitespace == right.Whitespace) res.Append(HttpUtility.HtmlEncode(right.ToString()));
else
{
res.Append(HttpUtility.HtmlEncode(right.TheWord));
char[] leftChars = left.Whitespace.ToCharArray();
char[] rightChars = right.Whitespace.ToCharArray();
Diff diff = new Diff(leftChars, rightChars, Word.Comparer);
foreach (Diff.Hunk h in diff)
{
if (h.Same)
res.Append(rightChars, h.Right.Start, h.Right.Count);
else
{
res.Append("<span class='diffchange'>");
res.Append('\x00A0', h.Right.Count); // replace spaces with NBSPs to make 'em visible
res.Append("</span>");
}
}
}
}
private void LineChanged(int leftLine, int rightLine)
{
// some kind of glitch with the diff engine
if (LeftLines[leftLine] == RightLines[rightLine])
{
ContextLine(rightLine);
return;
}
StringBuilder left = new StringBuilder();
StringBuilder right = new StringBuilder();
List <Word> leftList = Word.SplitString(LeftLines[leftLine]);
List <Word> rightList = Word.SplitString(RightLines[rightLine]);
diff = new Diff(leftList, rightList, Word.Comparer);
foreach (Diff.Hunk h in diff)
{
if (h.Same)
{
for (int i = 0; i < h.Left.Count; i++)
{
WhitespaceDiff(left, rightList[h.Right.Start + i], leftList[h.Left.Start + i]);
WhitespaceDiff(right, leftList[h.Left.Start + i], rightList[h.Right.Start + i]);
}
}
else
{
WordDiff(left, h.Left, h.Right, leftList, rightList);
WordDiff(right, h.Right, h.Left, rightList, leftList);
}
}
if (Variables.RTL)
{
Result.AppendFormat(@"<tr onclick='window.external.GoTo({1})' ondblclick='window.external.UndoChange({0},{1})'>
<td>+</td>
<td class='diff-addedline'>", rightLine, leftLine);
Result.Append(right);
Result.Append(@" </td>
<td>-</td>
<td class='diff-deletedline'>");
Result.Append(left);
Result.Append(@" </td>
</tr>" );
}
else
{
Result.AppendFormat(@"<tr onclick='window.external.GoTo({1})' ondblclick='window.external.UndoChange({0},{1})'>
<td>-</td>
<td class='diff-deletedline'>", leftLine, rightLine);
Result.Append(left);
Result.Append(@" </td>
<td>+</td>
<td class='diff-addedline'>");
Result.Append(right);
Result.Append(@" </td>
</tr>" );
}
}
