private async void BtnCompare_Click(object sender, RoutedEventArgs e)
{
try
{
// First load the html into a document objects we can manipulate
string html1 = await File.ReadAllTextAsync("Resources/bbc1.html");
HtmlDocument doc1 = new HtmlDocument();
doc1.LoadHtml(html1);
string html2 = await File.ReadAllTextAsync("Resources/bbc2.html");
HtmlDocument doc2 = new HtmlDocument();
doc2.LoadHtml(html2);
// Filter the html to remove parts that are not very interesting
HtmlFilter filter = new HtmlFilter();
filter.CleanHtml(doc1.DocumentNode);
filter.CleanHtml(doc2.DocumentNode);
// convert the html into lines
HtmlConverter converter = new HtmlConverter();
var lines1 = converter.GetLines(doc1.DocumentNode, ConvertOptions.Default);
var lines2 = converter.GetLines(doc2.DocumentNode, ConvertOptions.Default);
// find the difference between these 2 sets of lines
LineDiffer differ = new LineDiffer();
var diffResult = differ.GetDiff(lines1, lines2, true);
// load the original html into a document again
HtmlDocument originalDoc = new HtmlDocument();
originalDoc.LoadHtml(html1);
// highlight the changed parts of the document
Highlighter.ApplyHighlights(originalDoc, "#FFFF99", diffResult.Added.Select(i => i.Line.XPath));
string htmlHighlighted = originalDoc.Save();
webBrowserDiff.NavigateToString(htmlHighlighted);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
/// <summary>
/// Runs a test for a pair of input text files
/// </summary>
/// <param name="expected">The expected results for the test</param>
/// <param name="oldText">The reference text to compare to</param>
/// <param name="newText">The updated text to compare</param>
private static void Test(LineModificationType[] expected, string oldText, string newText)
{
MemoryOwner <LineModificationType> result = LineDiffer.ComputeDiff(oldText, newText, '\r');
try
{
Assert.AreEqual(expected.Length, result.Length);
if (expected.Length == 0)
{
return;
}
Assert.IsTrue(expected.SequenceEqual(result.Span.ToArray()));
}
finally
{
result.Dispose();
}
}
private void UpdateDiffInfo(string text)
{
MemoryOwner <LineModificationType> diff = LineDiffer.ComputeDiff(_LoadedText, text, Characters.CarriageReturn);
ref LineModificationType oldRef = ref _DiffIndicators.DangerousGetReference();
