/// <summary>
/// Performs syntax highlighting with the loaded Highlighter.
/// </summary>
public void Highlight()
{
if (HighlighterEnabled && Highlighter != null && !highlighting)
{
highlighting = true;
int selectionStart = SelectionStart;
int selectionLen = SelectionLength;
string rtf = Rtf;
rtf = Regex.Replace(rtf, @"\cf\d+ ?", string.Empty);
// Get the end of the header so we don't accidental format it
int headerEnd = GetRtfHeaderEnd();
var table = new RichColorTable();
// Iterate highlighting profiles and apply them
foreach (var profile in Highlighter.Profiles)
{
var regex = new Regex(profile.Pattern, profile.RegexOptions);
MatchCollection MC = regex.Matches(rtf, headerEnd);
bool usingGroups = regex.GetGroupNames().Contains("Value");
if (MC.Count <= 0)
{
continue;
}
table.AddColors(profile.Color);
string colorID = @"\cf" + table.Colors.Count() + " ";
// Do this in reverse so the size of the text does not effect the insertions
for (int i = MC.Count - 1; i >= 0; i--)
{
int start = usingGroups ? MC[i].Groups["Value"].Index : MC[i].Index;
int length = usingGroups ? MC[i].Groups["Value"].Length : MC[i].Length;
// So we dont get trailing color
var parentCol = GetParentColor(start, start - headerEnd, rtf);
rtf = rtf.Insert(start + length, parentCol);
// Insert color tag
rtf = rtf.Insert(start, colorID);
}
}
rtf = table.InjectTable(rtf);
Rtf = rtf;
SelectionStart = selectionStart;
SelectionLength = selectionLen;
highlighting = false;
}
}
/// <summary>
/// Gets the color table defined in rich text format.
/// </summary>
/// <returns>An empty table, if no table found.</returns>
/// <param name="rtf">The RTF of a RichTextBox.</param>
public static RichColorTable ExtractColorTable(string rtf)
{
string tableStr = Regex.Match(rtf, TABLE_PATTERN).Value;
if (String.IsNullOrEmpty(tableStr))
{
return(Empty);
}
MatchCollection MC = Regex.Matches(tableStr, TABLE_ELEMENT_PATTERN);
var table = new RichColorTable();
foreach (Match match in MC)
{
int R = int.Parse(match.Groups["R"].Value);
int G = int.Parse(match.Groups["G"].Value);
int B = int.Parse(match.Groups["B"].Value);
table.AddColors(Color.FromArgb(R, G, B));
}
return(table);
}
protected bool Equals(RichColorTable other)
{
return(Equals(colors, other.colors));
}
