// Process '*', '**' or '_', '__'
// This is horrible and probably much better done through regex, but I'm stubborn.
// For normal cases this routine works as expected. For unusual cases (eg: overlapped
// strong and emphasis blocks), the behaviour is probably not the same as the original
// markdown scanner.
/*
* public Token ProcessEmphasisOld(ref Token prev_single, ref Token prev_double)
* {
* // Check whitespace before/after
* bool bSpaceBefore = !bof && IsLineSpace(CharAtOffset(-1));
* bool bSpaceAfter = IsLineSpace(CharAtOffset(1));
*
* // Ignore if surrounded by whitespace
* if (bSpaceBefore && bSpaceAfter)
* {
* return null;
* }
*
* // Save the current character and skip it
* char ch = current;
* Skip(1);
*
* // Do we have a previous matching single star?
* if (!bSpaceBefore && prev_single != null)
* {
* // Yes, match them...
* prev_single.type = TokenType.open_em;
* prev_single = null;
* return CreateToken(TokenType.close_em, position - 1, 1);
* }
*
* // Is this a double star/under
* if (current == ch)
* {
* // Skip second character
* Skip(1);
*
* // Space after?
* bSpaceAfter = IsLineSpace(current);
*
* // Space both sides?
* if (bSpaceBefore && bSpaceAfter)
* {
* // Ignore it
* return CreateToken(TokenType.Text, position - 2, 2);
* }
*
* // Do we have a previous matching double
* if (!bSpaceBefore && prev_double != null)
* {
* // Yes, match them
* prev_double.type = TokenType.open_strong;
* prev_double = null;
* return CreateToken(TokenType.close_strong, position - 2, 2);
* }
*
* if (!bSpaceAfter)
* {
* // Opening double star
* prev_double = CreateToken(TokenType.Text, position - 2, 2);
* return prev_double;
* }
*
* // Ignore it
* return CreateToken(TokenType.Text, position - 2, 2);
* }
*
* // If there's a space before, we can open em
* if (!bSpaceAfter)
* {
* // Opening single star
* prev_single = CreateToken(TokenType.Text, position - 1, 1);
* return prev_single;
* }
*
* // Ignore
* Skip(-1);
* return null;
* }
*/
// Process auto links eg: <google.com>
Token ProcessAutoLink()
{
if (DisableLinks)
{
return(null);
}
// Skip the angle bracket and remember the start
SkipForward(1);
Mark();
bool ExtraMode = m_Markdown.ExtraMode;
// Allow anything up to the closing angle, watch for escapable characters
while (!eof)
{
char ch = current;
// No whitespace allowed
if (char.IsWhiteSpace(ch))
{
break;
}
// End found?
if (ch == '>')
{
string url = Utils.UnescapeString(Extract(), ExtraMode);
LinkInfo li = null;
if (Utils.IsEmailAddress(url))
{
string link_text;
if (url.StartsWith("mailto:"))
{
link_text = url.Substring(7);
}
else
{
link_text = url;
url = "mailto:" + url;
}
li = new LinkInfo(new LinkDefinition("auto", url, null), link_text);
}
else if (Utils.IsWebAddress(url))
{
li = new LinkInfo(new LinkDefinition("auto", url, null), url);
}
if (li != null)
{
SkipForward(1);
return(CreateToken(TokenType.link, li));
}
return(null);
}
this.SkipEscapableChar(ExtraMode);
}
// Didn't work
return(null);
}