/// <summary>Extracts text from the HTML code given as a String.</summary>
/// <remarks>Extracts text from the HTML code given as a String.</remarks>
/// <param name="html">The HTML code as a String.</param>
/// <returns>The extracted text.</returns>
/// <exception cref="NBoilerpipePortable.BoilerpipeProcessingException">NBoilerpipePortable.BoilerpipeProcessingException
/// </exception>
public virtual string GetText(string html)
{
try
{
NBoilerpipeHtmlParser parser = new NBoilerpipeHtmlParser(new NBoilerpipeContentHandler());
parser.Parse(html);
return GetText(parser.ToTextDocument());
}
catch (Exception e)
{
throw new BoilerpipeProcessingException(e.ToString());
}
}
public IEnumerable<Tuple<string, string>> GetTextAndImageBlocks(string html, Uri uri, out string title)
{
var contentHandler = new NBoilerpipeContentHandler();
NBoilerpipeHtmlParser parser = new NBoilerpipeHtmlParser(contentHandler);
parser.Parse(html);
var doc = parser.ToTextDocument();
this.Process(doc);
title = doc.GetTitle();
List<Tuple<string, string>> result = new List<Tuple<string, string>>();
foreach (var textblock in doc.GetTextBlocks())
{
if (textblock.IsContent())
{
int textOffset = 0;
var remainingText = textblock.GetText();
foreach (var imageTpl in textblock.NearbyImages)
{
if (imageTpl.Item1 == 0)
result.Add(Tuple.Create("", CleanImageUrl(uri, imageTpl.Item2)));
else
{
var substring = remainingText.Substring(0, (imageTpl.Item1 - textOffset));
remainingText = remainingText.Substring(imageTpl.Item1 - textOffset);
textOffset = imageTpl.Item1;
result.Add(Tuple.Create(substring, ""));
result.Add(Tuple.Create("", CleanImageUrl(uri, imageTpl.Item2)));
}
}
if (!string.IsNullOrWhiteSpace(remainingText))
{
result.Add(Tuple.Create(remainingText, ""));
}
}
}
return result;
}
