protected virtual string HtmlToHtml(string text)
{
// TODO: Refactor regions into methods
#region Attributes
// TODO: More precise and universal regex for attr match
// get match collections, attrs @title, @alt, @summary going first
var attrs = Regex.Matches(text, @"(title|alt|summary)=[""'](.*?)[""']", RegexOptions.IgnoreCase | RegexOptions.Singleline);
// calculate real matches count, without empty and non-successful
var attrsCount = CountValidMatches(attrs, 2);
// make an array of MatchGroups to store new attribute values
var attrGroups = new MatchGroup [attrsCount];
CopyValidMatches(attrs, attrGroups, 2);
// pass all matched values to cleanup
foreach (var group in attrGroups)
{
group.NewValue = TextToTextProcessing.Process(group.Value);
}
// now, we need to apply changes back to original text, before proceed with tags and values
text = ApplyMatchGroups(text, attrGroups);
#endregion
#region Tag values
// get values
var values = Regex.Matches(text, ">(.*?)<", RegexOptions.Singleline);
var valuesCount = CountValidMatches(values, 1);
var valueGroups = new MatchGroup [valuesCount];
CopyValidMatches(values, valueGroups, 1);
foreach (var group in valueGroups)
{
group.NewValue = TextToTextProcessing.Process(group.Value);
}
text = ApplyMatchGroups(text, valueGroups);
#endregion
return(text);
}
private void CopyValidMatches(MatchCollection matches, MatchGroup [] matchArray, int groupNum)
{
var matchIndex = 0;
foreach (Match match in matches)
{
if (match.Success && !string.IsNullOrWhiteSpace(match.Groups [groupNum].Value))
{
matchArray [matchIndex] = new MatchGroup();
matchArray [matchIndex].Index = match.Groups [groupNum].Index;
matchArray [matchIndex].Length = match.Groups [groupNum].Length;
matchArray [matchIndex].Value = match.Groups [groupNum].Value;
matchIndex++;
}
}
}
