/// <summary>
/// Returns if the given string contains any text or rich text tags.
/// </summary>
static public bool ContainsText(StringSlice inString, IDelimiterRules inDelimiters, IEnumerable <string> inTextTags = null)
{
bool bTrackRichText = inDelimiters.RichText;
bool bTrackTags = !bTrackRichText || !HasSameDelims(inDelimiters, RichTextDelimiters);
int length = inString.Length;
int charIdx = 0;
int richStart = -1;
int tagStart = -1;
int copyStart = 0;
while (charIdx < length)
{
if (bTrackRichText)
{
if (inString.AttemptMatch(charIdx, "<"))
{
richStart = charIdx;
}
else if (inString.AttemptMatch(charIdx, ">"))
{
return(true);
}
}
if (bTrackTags)
{
if (inString.AttemptMatch(charIdx, inDelimiters.TagStartDelimiter))
{
tagStart = charIdx;
}
else if (inString.AttemptMatch(charIdx, inDelimiters.TagEndDelimiter))
{
StringSlice check = inString.Substring(copyStart, tagStart - copyStart);
if (!check.IsWhitespace)
{
return(true);
}
if (inTextTags != null)
{
TagData data = TagData.Parse(inString.Substring(tagStart, charIdx - tagStart + 1), inDelimiters);
foreach (var tag in inTextTags)
{
if (data.Id == tag)
{
return(true);
}
}
}
copyStart = charIdx + 1;
tagStart = -1;
richStart = -1;
}
}
++charIdx;
}
StringSlice finalCheck = inString.Substring(copyStart, length - copyStart);
return(!finalCheck.IsWhitespace);
}