private void ByAttribute()
{
TokenQueue cq = new TokenQueue(tq.ChompBalanced('[', ']'));
// content queue
String key = cq.ConsumeToAny(AttributeEvals);
// eq, not, start, end, contain, match, (no val)
Validate.NotEmpty(key);
cq.ConsumeWhitespace();
if (cq.IsEmpty())
{
if (key.StartsWith("^"))
{
evals.Add(new Evaluator.AttributeStarting(key.Substring(1)));
}
else
{
evals.Add(new Evaluator.Attribute(key));
}
}
else
{
if (cq.MatchChomp("="))
{
evals.Add(new Evaluator.AttributeWithValue(key, cq.Remainder()));
}
else
{
if (cq.MatchChomp("!="))
{
evals.Add(new Evaluator.AttributeWithValueNot(key, cq.Remainder()));
}
else
{
if (cq.MatchChomp("^="))
{
evals.Add(new Evaluator.AttributeWithValueStarting(key, cq.Remainder()));
}
else
{
if (cq.MatchChomp("$="))
{
evals.Add(new Evaluator.AttributeWithValueEnding(key, cq.Remainder()));
}
else
{
if (cq.MatchChomp("*="))
{
evals.Add(new Evaluator.AttributeWithValueContaining(key, cq.Remainder()));
}
else
{
if (cq.MatchChomp("~="))
{
evals.Add(new Evaluator.AttributeWithValueMatching(key, iText.IO.Util.StringUtil.RegexCompile(cq.Remainder
())));
}
else
{
throw new Selector.SelectorParseException("Could not parse attribute query " + PortUtil.EscapedSingleBracket
+ "{0}" + PortUtil.EscapedSingleBracket + ": unexpected token at " + PortUtil.EscapedSingleBracket +
"{1}" + PortUtil.EscapedSingleBracket, query, cq.Remainder());
}
}
}
}
}
}
}
}