mirror of
https://github.com/gohugoio/hugo.git
synced 2024-12-24 16:31:15 +00:00
87 lines
2.9 KiB
Go
87 lines
2.9 KiB
Go
// Copyright 2016 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package helpers
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import (
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"bytes"
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"html"
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"github.com/miekg/mmark"
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"github.com/russross/blackfriday"
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jww "github.com/spf13/jwalterweatherman"
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"github.com/spf13/viper"
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)
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type LinkResolverFunc func(ref string) (string, error)
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type FileResolverFunc func(ref string) (string, error)
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// Wraps a blackfriday.Renderer, typically a blackfriday.Html
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// Enabling Hugo to customise the rendering experience
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type HugoHtmlRenderer struct {
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FileResolver FileResolverFunc
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LinkResolver LinkResolverFunc
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blackfriday.Renderer
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}
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func (renderer *HugoHtmlRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string) {
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if viper.GetBool("PygmentsCodeFences") {
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opts := viper.GetString("PygmentsOptions")
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str := html.UnescapeString(string(text))
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out.WriteString(Highlight(str, lang, opts))
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} else {
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renderer.Renderer.BlockCode(out, text, lang)
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}
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}
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func (renderer *HugoHtmlRenderer) Link(out *bytes.Buffer, link []byte, title []byte, content []byte) {
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if renderer.LinkResolver == nil || bytes.HasPrefix(link, []byte("{#{#HUGOSHORTCODE")) {
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// Use the blackfriday built in Link handler
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renderer.Renderer.Link(out, link, title, content)
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} else {
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newLink, err := renderer.LinkResolver(string(link))
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if err != nil {
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newLink = string(link)
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jww.ERROR.Printf("LinkResolver: %s", err)
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}
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renderer.Renderer.Link(out, []byte(newLink), title, content)
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}
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}
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func (renderer *HugoHtmlRenderer) Image(out *bytes.Buffer, link []byte, title []byte, alt []byte) {
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if renderer.FileResolver == nil || bytes.HasPrefix(link, []byte("{#{#HUGOSHORTCODE")) {
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// Use the blackfriday built in Image handler
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renderer.Renderer.Image(out, link, title, alt)
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} else {
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newLink, err := renderer.FileResolver(string(link))
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if err != nil {
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newLink = string(link)
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jww.ERROR.Printf("FileResolver: %s", err)
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}
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renderer.Renderer.Image(out, []byte(newLink), title, alt)
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}
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}
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// Wraps a mmark.Renderer, typically a mmark.html
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// Enabling Hugo to customise the rendering experience
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type HugoMmarkHtmlRenderer struct {
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mmark.Renderer
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}
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func (renderer *HugoMmarkHtmlRenderer) BlockCode(out *bytes.Buffer, text []byte, lang string, caption []byte, subfigure bool, callouts bool) {
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if viper.GetBool("PygmentsCodeFences") {
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str := html.UnescapeString(string(text))
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out.WriteString(Highlight(str, lang, ""))
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} else {
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renderer.Renderer.BlockCode(out, text, lang, caption, subfigure, callouts)
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}
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}
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