package formatter import ( "fmt" "unicode" "git.thomasvoss.com/gsp/parser" ) var stringEscapes = map[rune]string{ '"': """, '&': "&", '<': "<", } func PrintHtml(ast parser.AstNode) { if ast.Type == parser.Text { fmt.Print(ast.Text) return } if ast.Type == parser.Normal { fmt.Printf("<%s", ast.Text) // Classes are grouped together with ‘class="…"’, so we need // special handling. classes := []string{} notClasses := []parser.Attr{} for _, a := range ast.Attrs { if a.Key == "class" { classes = append(classes, a.Value) } else { notClasses = append(notClasses, a) } } if len(classes) > 0 { fmt.Printf(" class=\"%s", classes[0]) for _, c := range classes[1:] { fmt.Printf(" %s", c) } fmt.Print("\"") } for _, a := range notClasses { fmt.Printf(" %s", a.Key) if a.Value == "" { continue } fmt.Print("=\"") for _, r := range a.Value { if v, ok := stringEscapes[r]; ok { fmt.Print(v) } else { fmt.Printf("%c", r) } } fmt.Print("\"") } fmt.Print(">") } if len(ast.Children) == 0 { return } for i, n := range ast.Children { if n.Type == parser.Text { if i == 0 { n.Text = trimLeftSpaces(n.Text) } if i == len(ast.Children)-1 { n.Text = trimRightSpaces(n.Text) } } PrintHtml(n) } if ast.Type == parser.Normal { fmt.Printf("", ast.Text) } } func trimLeftSpaces(s string) string { i := 0 rs := []rune(s) for i < len(s) && unicode.IsSpace(rs[i]) { i++ } return string(rs[i:]) } func trimRightSpaces(s string) string { i := len(s) - 1 rs := []rune(s) for i >= 0 && unicode.IsSpace(rs[i]) { i-- } return string(rs[:i+1]) }