/// <summary>
/// Initializes a new instance of the <see cref="BaseJobsIndexer" /> class.
/// </summary>
/// <param name="jobsProvider">The jobs provider.</param>
/// <param name="stopWordsRemover">The stop words remover.</param>
/// <param name="tagSanitiser">The tag sanitiser.</param>
/// <exception cref="System.ArgumentNullException">stopWordsRemover</exception>
protected BaseJobsIndexer(IJobsDataProvider jobsProvider, ISearchFilter stopWordsRemover, IHtmlTagSanitiser tagSanitiser)
{
if (jobsProvider == null)
{
throw new ArgumentNullException(nameof(jobsProvider));
}
if (stopWordsRemover == null)
{
throw new ArgumentNullException(nameof(stopWordsRemover));
}
if (tagSanitiser == null)
{
throw new ArgumentNullException(nameof(tagSanitiser));
}
_jobsProvider = jobsProvider;
_stopWordsRemover = stopWordsRemover;
_tagSanitiser = tagSanitiser;
}
/// <summary>
/// Get the text content of an HTML string, but without text used for links
/// </summary>
/// <param name="text">The text.</param>
/// <param name="tagSanitiser">The tag sanitiser.</param>
/// <returns></returns>
public string TextOutsideLinks(string text, IHtmlTagSanitiser tagSanitiser)
{
if (String.IsNullOrEmpty(text))
{
return(text);
}
if (tagSanitiser == null)
{
throw new ArgumentNullException(nameof(tagSanitiser));
}
// Remove any links including the link text
const string anythingExceptEndAnchor = "((?!</a>).)*";
text = Regex.Replace(text, "<a [^>]*>" + anythingExceptEndAnchor + "</a>", String.Empty);
// Remove any other HTML, and what's left is text outside links
text = HttpUtility.HtmlDecode(tagSanitiser.StripTags(text));
// Any remaining text is invalid
return(text.Trim());
}
