hugo/markup/mmark/renderer.go

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// Copyright 2019 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package mmark
import (
"bytes"
"strings"
"github.com/miekg/mmark"
"github.com/gohugoio/hugo/config"
"github.com/gohugoio/hugo/markup/internal"
)
// hugoHTMLRenderer wraps a blackfriday.Renderer, typically a blackfriday.Html
// adding some custom behaviour.
type mmarkRenderer struct {
Cfg config.Provider
Config *internal.BlackFriday
highlight func(code, lang, optsStr string) (string, error)
mmark.Renderer
}
// BlockCode renders a given text as a block of code.
func (r *mmarkRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string, caption []byte, subfigure bool, callouts bool) {
if r.Cfg.GetBool("pygmentsCodeFences") && (lang != "" || r.Cfg.GetBool("pygmentsCodeFencesGuessSyntax")) {
str := strings.Trim(string(text), "\n\r")
highlighted, _ := r.highlight(str, lang, "")
out.WriteString(highlighted)
} else {
r.Renderer.BlockCode(out, text, lang, caption, subfigure, callouts)
}
}