IContentSource CrawlObject(IContentSource content)
{
var match = Regex.Match(content.ToString(), Pattern, RegexOptions.Singleline | RegexOptions.IgnoreCase);
if (match == null || match.Groups.Count <= MatchGroup)
return GetDefault(string.Format("Could not match pattern {0}", Pattern));
var plainContent = new PlainContent();
plainContent.ContentList.Add(match.Groups[MatchGroup].Value);
return plainContent;
}
protected IContentSource GetDefault(string errMessage=null)
{
if (DefaultValue != null) {
var content = new PlainContent();
content.ContentList.Add(DefaultValue);
return content;
}
if (ThrowIfNotFound)
throw new ArgumentException(errMessage);
return null;
}