hugo/tpl/transform/transform.go
Bjørn Erik Pedersen bfb9613a14
Add Goldmark as the new default markdown handler
This commit adds the fast and CommonMark compliant Goldmark as the new default markdown handler in Hugo.

If you want to continue using BlackFriday as the default for md/markdown extensions, you can use this configuration:

```toml
[markup]
defaultMarkdownHandler="blackfriday"
```

Fixes #5963
Fixes #1778
Fixes #6355
2019-11-23 14:12:24 +01:00

120 lines
3.1 KiB
Go

// Copyright 2017 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 transform provides template functions for transforming content.
package transform
import (
"html"
"html/template"
"github.com/gohugoio/hugo/cache/namedmemcache"
"github.com/gohugoio/hugo/deps"
"github.com/gohugoio/hugo/helpers"
"github.com/spf13/cast"
)
// New returns a new instance of the transform-namespaced template functions.
func New(deps *deps.Deps) *Namespace {
cache := namedmemcache.New()
deps.BuildStartListeners.Add(
func() {
cache.Clear()
})
return &Namespace{
cache: cache,
deps: deps,
}
}
// Namespace provides template functions for the "transform" namespace.
type Namespace struct {
cache *namedmemcache.Cache
deps *deps.Deps
}
// Emojify returns a copy of s with all emoji codes replaced with actual emojis.
//
// See http://www.emoji-cheat-sheet.com/
func (ns *Namespace) Emojify(s interface{}) (template.HTML, error) {
ss, err := cast.ToStringE(s)
if err != nil {
return "", err
}
return template.HTML(helpers.Emojify([]byte(ss))), nil
}
// Highlight returns a copy of s as an HTML string with syntax
// highlighting applied.
func (ns *Namespace) Highlight(s interface{}, lang, opts string) (template.HTML, error) {
ss, err := cast.ToStringE(s)
if err != nil {
return "", err
}
highlighted, _ := ns.deps.ContentSpec.Converters.Highlight(ss, lang, opts)
return template.HTML(highlighted), nil
}
// HTMLEscape returns a copy of s with reserved HTML characters escaped.
func (ns *Namespace) HTMLEscape(s interface{}) (string, error) {
ss, err := cast.ToStringE(s)
if err != nil {
return "", err
}
return html.EscapeString(ss), nil
}
// HTMLUnescape returns a copy of with HTML escape requences converted to plain
// text.
func (ns *Namespace) HTMLUnescape(s interface{}) (string, error) {
ss, err := cast.ToStringE(s)
if err != nil {
return "", err
}
return html.UnescapeString(ss), nil
}
// Markdownify renders a given input from Markdown to HTML.
func (ns *Namespace) Markdownify(s interface{}) (template.HTML, error) {
ss, err := cast.ToStringE(s)
if err != nil {
return "", err
}
b, err := ns.deps.ContentSpec.RenderMarkdown([]byte(ss))
if err != nil {
return "", err
}
// Strip if this is a short inline type of text.
b = ns.deps.ContentSpec.TrimShortHTML(b)
return helpers.BytesToHTML(b), nil
}
// Plainify returns a copy of s with all HTML tags removed.
func (ns *Namespace) Plainify(s interface{}) (string, error) {
ss, err := cast.ToStringE(s)
if err != nil {
return "", err
}
return helpers.StripHTML(ss), nil
}