private static void SetAnsiAttribute(string token, AnsiTextAttribute attributes)
{
var value = token.Replace("ansi-text-", string.Empty);
if (string.IsNullOrWhiteSpace(value))
{
return;
}
AnsiAttribute attribute;
if (!Enum.TryParse(value, true, out attribute))
{
return;
}
switch (attribute)
{
case AnsiAttribute.Bold:
attributes.IsBold = true;
return;
case AnsiAttribute.Underline:
attributes.IsUnderline = true;
return;
}
}
private static void VisitParser(IHtmlSpanElement element, StringBuilder sb)
{
var ws = new Regex(@"\s+", RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace | RegexOptions.Multiline);
if (element == null)
{
return;
}
var attribute = new AnsiTextAttribute();
ParseAnsiClass(element.ClassList, attribute);
sb.Append(attribute);
sb.Append(ws.Replace(element.TextContent.TrimStart(), " "));
}
private static void SetAnsiForeground(string token, AnsiTextAttribute attributes)
{
var color = token.Replace("ansi-fg-", string.Empty);
if (string.IsNullOrWhiteSpace(color))
{
return;
}
AnsiForegroundColor foregroundColor;
if (!Enum.TryParse(color, true, out foregroundColor))
{
return;
}
attributes.ForegroundColor = (int)foregroundColor;
}
private static void ParseAnsiClass(ITokenList tokens, AnsiTextAttribute attributes)
{
foreach (var token in tokens)
{
if (token == "tab")
{
attributes.IsTab = true;
return;
}
if (!token.StartsWith("ansi-"))
{
continue;
}
if (token.StartsWith("ansi-bg"))
{
SetAnsiBackground(token, attributes);
continue;
}
if (token.StartsWith("ansi-fg"))
{
SetAnsiForeground(token, attributes);
continue;
}
if (token.StartsWith("ansi-text"))
{
SetAnsiAttribute(token, attributes);
continue;
}
switch (token)
{
case "ansi-cls":
attributes.IsCls = true;
break;
}
}
}
private static void VisitParser(IHtmlDivElement element, StringBuilder sb)
{
if (element == null)
{
return;
}
var attributes = new AnsiTextAttribute();
ParseAnsiClass(element.ClassList, attributes);
if (attributes.IsCls)
{
sb.Append(ClearScreenAndHomeCursor);
}
foreach (var child in element.Children)
{
VisitParser(child as IHtmlSpanElement, sb);
VisitParser(child as IHtmlDivElement, sb);
}
sb.Append(Environment.NewLine);
}
