hugo/markup/internal/blackfriday.go
Bjørn Erik Pedersen 5f6b6ec689
Prepare for Goldmark
This commmit prepares for the addition of Goldmark as the new Markdown renderer in Hugo.

This introduces a new `markup` package with some common interfaces and each implementation in its own package.

See #5963
2019-11-06 19:09:08 +01:00

108 lines
3.3 KiB
Go

// 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 helpers implements general utility functions that work with
// and on content. The helper functions defined here lay down the
// foundation of how Hugo works with files and filepaths, and perform
// string operations on content.
package internal
import (
"github.com/gohugoio/hugo/common/maps"
"github.com/gohugoio/hugo/markup/converter"
"github.com/mitchellh/mapstructure"
"github.com/pkg/errors"
)
// BlackFriday holds configuration values for BlackFriday rendering.
// It is kept here because it's used in several packages.
type BlackFriday struct {
Smartypants bool
SmartypantsQuotesNBSP bool
AngledQuotes bool
Fractions bool
HrefTargetBlank bool
NofollowLinks bool
NoreferrerLinks bool
SmartDashes bool
LatexDashes bool
TaskLists bool
PlainIDAnchors bool
Extensions []string
ExtensionsMask []string
SkipHTML bool
FootnoteAnchorPrefix string
FootnoteReturnLinkContents string
}
func UpdateBlackFriday(old *BlackFriday, m map[string]interface{}) (*BlackFriday, error) {
// Create a copy so we can modify it.
bf := *old
if err := mapstructure.Decode(m, &bf); err != nil {
return nil, errors.WithMessage(err, "failed to decode rendering config")
}
return &bf, nil
}
// NewBlackfriday creates a new Blackfriday filled with site config or some sane defaults.
func NewBlackfriday(cfg converter.ProviderConfig) (*BlackFriday, error) {
var siteConfig map[string]interface{}
if cfg.Cfg != nil {
siteConfig = cfg.Cfg.GetStringMap("blackfriday")
}
defaultParam := map[string]interface{}{
"smartypants": true,
"angledQuotes": false,
"smartypantsQuotesNBSP": false,
"fractions": true,
"hrefTargetBlank": false,
"nofollowLinks": false,
"noreferrerLinks": false,
"smartDashes": true,
"latexDashes": true,
"plainIDAnchors": true,
"taskLists": true,
"skipHTML": false,
}
maps.ToLower(defaultParam)
config := make(map[string]interface{})
for k, v := range defaultParam {
config[k] = v
}
for k, v := range siteConfig {
config[k] = v
}
combinedConfig := &BlackFriday{}
if err := mapstructure.Decode(config, combinedConfig); err != nil {
return nil, errors.Errorf("failed to decode Blackfriday config: %s", err)
}
// TODO(bep) update/consolidate docs
if combinedConfig.FootnoteAnchorPrefix == "" {
combinedConfig.FootnoteAnchorPrefix = cfg.Cfg.GetString("footnoteAnchorPrefix")
}
if combinedConfig.FootnoteReturnLinkContents == "" {
combinedConfig.FootnoteReturnLinkContents = cfg.Cfg.GetString("footnoteReturnLinkContents")
}
return combinedConfig, nil
}