public override BlockState TryOpen(BlockProcessor processor)
{
if (processor.IsCodeIndent)
{
return(BlockState.None);
}
// Sample: [!code-javascript[Main](../jquery.js?name=testsnippet#tag "title")]
var slice = processor.Line;
if (!ExtensionsHelper.MatchStart(ref slice, StartString, false))
{
return(BlockState.None);
}
var codeSnippet = new CodeSnippet(this);
MatchLanguage(processor, ref slice, ref codeSnippet);
if (!MatchName(processor, ref slice, ref codeSnippet))
{
return(BlockState.None);
}
if (!MatchPath(processor, ref slice, ref codeSnippet))
{
return(BlockState.None);
}
MatchQuery(processor, ref slice, ref codeSnippet);
MatchTitle(processor, ref slice, ref codeSnippet);
ExtensionsHelper.SkipWhitespace(ref slice);
if (slice.CurrentChar == ')')
{
slice.NextChar();
ExtensionsHelper.SkipWhitespace(ref slice);
if (slice.CurrentChar == ']')
{
var codeSnippetEnd = slice.Start;
slice.NextChar();
ExtensionsHelper.SkipWhitespace(ref slice);
if (slice.CurrentChar == '\0')
{
// slice finished its task, re-use it for Raw content
slice.Start = processor.Line.Start;
slice.End = codeSnippetEnd;
codeSnippet.Raw = slice.ToString();
codeSnippet.Column = processor.Column;
codeSnippet.Line = processor.LineIndex;
processor.NewBlocks.Push(codeSnippet);
return(BlockState.BreakDiscard);
}
}
}
return(BlockState.None);
}
private bool MatchPath(BlockProcessor processor, ref StringSlice slice, ref CodeSnippet codeSnippet)
{
ExtensionsHelper.SkipWhitespace(ref slice);
if (slice.CurrentChar != '(')
{
return(false);
}
var c = slice.NextChar();
var bracketNeedToMatch = 0;
var path = StringBuilderCache.Local();
var hasEscape = false;
while (c != '\0' && (hasEscape || (c != '#' && c != '?' && c != '"' && (c != ')' || bracketNeedToMatch > 0))))
{
if (c == '\\' && !hasEscape)
{
hasEscape = true;
}
else
{
if (c == '(' && !hasEscape)
{
bracketNeedToMatch++;
}
if (c == ')' && !hasEscape)
{
bracketNeedToMatch--;
}
path.Append(c);
hasEscape = false;
}
c = slice.NextChar();
}
codeSnippet.CodePath = path.ToString().Trim();
return(true);
}