func Print(s *Scanner, w io.Writer) error {
var p syntaxhighlight.Printer = HTMLPrinter(gfmDiff)
for s.Scan() {
tok, kind := s.Token()
err := p.Print(w, kind, string(tok))
if err != nil {
return err
}
}
return s.Err()
}
func Print(src []byte, w io.Writer, p syntaxhighlight.Printer) error {
var s scanner.Scanner
fset := token.NewFileSet()
file := fset.AddFile("", fset.Base(), len(src))
s.Init(file, src, nil, scanner.ScanComments)
var lastOffset int
for {
pos, tok, lit := s.Scan()
if tok == token.EOF {
break
}
var tokString string
if lit != "" {
tokString = lit
} else {
tokString = tok.String()
}
// TODO: Clean this up.
//if tok == token.SEMICOLON {
if tok == token.SEMICOLON && lit == "\n" {
continue
}
// Whitespace between previous and current tokens.
offset := fset.Position(pos).Offset
if whitespace := string(src[lastOffset:offset]); whitespace != "" {
err := p.Print(w, syntaxhighlight.Whitespace, whitespace)
if err != nil {
return err
}
}
lastOffset = offset + len(tokString)
err := p.Print(w, TokenKind(tok, lit), tokString)
if err != nil {
return err
}
}
// Print final whitespace after the last token.
if whitespace := string(src[lastOffset:]); whitespace != "" {
err := p.Print(w, syntaxhighlight.Whitespace, whitespace)
if err != nil {
return err
}
}
return nil
}