Size FindSizeAttribute(string input)
{
Size size = new Size(_width, _height);
if (string.IsNullOrEmpty(input))
return size;
try
{
RequiredAttribute[] attrWidth = new RequiredAttribute[] { new RequiredAttribute("width"), new RequiredAttribute("height") };
IElementPredicate predicate = new OrPredicate(new BeginTagPredicate("embed", attrWidth), new BeginTagPredicate("object", attrWidth));
HtmlExtractor ex = new HtmlExtractor(input);
if (ex.Seek(predicate).Success)
{
BeginTag tag = (BeginTag)ex.Element;
size = new Size(Convert.ToInt32(tag.GetAttributeValue("width"), CultureInfo.InvariantCulture), Convert.ToInt32(tag.GetAttributeValue("height"), CultureInfo.InvariantCulture));
}
}
catch (Exception ex)
{
Trace.Fail("Exception thrown while trying to find video size: " + ex);
}
return size;
}
internal static IElementPredicate Parse(string criterion)
{
SimpleHtmlParser parser = new SimpleHtmlParser(criterion);
Element el = parser.Next();
if (el == null)
{
Trace.Fail("Criterion was null");
throw new ArgumentException("Criterion was null");
}
if (parser.Next() != null)
{
Trace.Fail("Too many criteria");
throw new ArgumentException("Too many criteria");
}
if (el is BeginTag)
{
BeginTag tag = (BeginTag)el;
if (tag.HasResidue || tag.Unterminated)
{
Trace.Fail("Malformed criterion");
throw new ArgumentException("Malformed criterion");
}
RequiredAttribute[] attributes = new RequiredAttribute[tag.Attributes.Length];
for (int i = 0; i < attributes.Length; i++)
attributes[i] = new RequiredAttribute(tag.Attributes[i].Name, tag.Attributes[i].Value);
return new BeginTagPredicate(tag.Name, attributes);
}
else if (el is EndTag)
{
return new EndTagPredicate(((EndTag)el).Name);
}
else if (el is Text)
{
return new TextPredicate(el.RawText);
}
else if (el is Comment)
{
return new CommentPredicate(el.RawText);
}
else
{
Trace.Fail("Invalid criterion \"" + criterion + "\"");
throw new ArgumentException("Invalid criterion \"" + criterion + "\"");
}
}
