private bool ParseUntilClosingTag(TagNode tag)
{
var normalizedTagName = tag.Name.ToLowerInvariant();
Regex matcher;
lock (closingTagMatcherCache)
{
var closingTagExpr = "(?i)</(" + Regex.Escape(normalizedTagName) + @")(\s*)>";
matcher = closingTagMatcherCache.TryGetValue(normalizedTagName);
if (matcher == null)
{
matcher = new Regex(closingTagExpr);
closingTagMatcherCache.Add(normalizedTagName, matcher);
}
}
Match closingTagMatch;
if (tag is ParserTag pt)
{
// For parser tags, we just read to the end.
closingTagMatch = matcher.Match(fulltext, position);
if (closingTagMatch.Success)
{
pt.Content = fulltext.Substring(position, closingTagMatch.Index - position);
MovePositionTo(closingTagMatch.Index + closingTagMatch.Length);
goto CLOSE_TAG;
}
// If the parser tag doesn't close, then we fail. Pity.
return(false);
}
// We'll parse into the tag.
// But before the parsing begins,
// do a simple check of whether there will be a possible closing tag ahead.
if (!options.AllowClosingMarkInference && !matcher.IsMatch(fulltext, position))
{
return(false);
}
var ht = (HtmlTag)tag;
ParseStart(matcher.ToString(), false);
ht.Content = ParseWikitext();
Accept();
// Consume the tag closing.
var closingTag = ConsumeToken(matcher.ToString());
if (closingTag == null)
{
if (options.AllowClosingMarkInference)
{
tag.SetInferredClosingMark();
tag.ClosingTagName = null;
return(true);
}
return(false);
}
closingTagMatch = matcher.Match(closingTag);
CLOSE_TAG:
Debug.Assert(closingTagMatch.Success);
Debug.Assert(closingTagMatch.Groups[1].Success);
Debug.Assert(closingTagMatch.Groups[2].Success);
tag.ClosingTagName = closingTagMatch.Groups[1].Value != tag.Name
? closingTagMatch.Groups[1].Value
: null;
tag.ClosingTagTrailingWhitespace = closingTagMatch.Groups[2].Value;
return(true);
}
private bool ParseUntilClosingTag(TagNode tag)
{
var normalizedTagName = tag.Name.ToLowerInvariant();
Regex matcher;
var closingTagExpr = "(?i)</(" + Regex.Escape(normalizedTagName) + @")(\s*)>";
lock (closingTagMatcherCache)
{
matcher = closingTagMatcherCache.TryGetValue(normalizedTagName);
if (matcher == null)
{
matcher = new Regex(closingTagExpr);
closingTagMatcherCache.Add(normalizedTagName, matcher);
}
}
Match closingTagMatch;
if (tag is ParserTag pt)
{
// For parser tags, we just read to the end.
closingTagMatch = matcher.Match(fulltext, position);
if (closingTagMatch.Success)
{
pt.Content = fulltext.Substring(position, closingTagMatch.Index - position);
MovePositionTo(closingTagMatch.Index + closingTagMatch.Length);
goto CLOSE_TAG;
}
// If the parser tag doesn't close, then we fail. Pity.
return(false);
}
// We'll parse into the innerHTML of HTML tag.
var ht = (HtmlTag)tag;
if (normalizedTagName == "li")
{
// LI_TAG
// <li> can be closed by </li>, <li ...> or EOF
// <li> tags closed by <li ...>, or EOF are using TagStyle.NotClosed .
ParseStart(@"</li\s*>|<li(\s*>|\s+)", false);
}
else
{
// OTHER_TAG
ParseStart(closingTagExpr, false);
}
ht.Content = ParseWikitext();
Accept();
// Try to consume the tag closing.
var closingTag = ConsumeToken(closingTagExpr);
if (closingTag == null)
{
// Unbalanced HTML tag. This is a pathological case.
// We won't backtrack here, as this is expensive and MW forces to close tags at EOF.
tag.SetInferredClosingMark();
tag.ClosingTagName = null;
tag.TagStyle = TagStyle.NotClosed;
return(true);
}
closingTagMatch = matcher.Match(closingTag);
CLOSE_TAG:
Debug.Assert(closingTagMatch.Success);
Debug.Assert(closingTagMatch.Groups[1].Success);
Debug.Assert(closingTagMatch.Groups[2].Success);
tag.ClosingTagName = closingTagMatch.Groups[1].Value != tag.Name
? closingTagMatch.Groups[1].Value
: null;
tag.ClosingTagTrailingWhitespace = closingTagMatch.Groups[2].Value;
return(true);
}
