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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 markup contains the markup handling (e.g. Markdown).
package markup
import (
"fmt"
"strings"
"github.com/gohugoio/hugo/markup/highlight"
"github.com/gohugoio/hugo/markup/markup_config"
"github.com/gohugoio/hugo/markup/goldmark"
"github.com/gohugoio/hugo/markup/org"
"github.com/gohugoio/hugo/markup/asciidocext"
"github.com/gohugoio/hugo/markup/converter"
"github.com/gohugoio/hugo/markup/pandoc"
"github.com/gohugoio/hugo/markup/rst"
)
func NewConverterProvider(cfg converter.ProviderConfig) (ConverterProvider, error) {
converters := make(map[string]converter.Provider)
mcfg := cfg.MarkupConfig()
if cfg.Highlighter == nil {
cfg.Highlighter = highlight.New(mcfg.Highlight)
}
defaultHandler := mcfg.DefaultMarkdownHandler
var defaultFound bool
add := func(p converter.ProviderProvider, aliases ...string) error {
c, err := p.New(cfg)
if err != nil {
return err
}
name := c.Name()
aliases = append(aliases, name)
if strings.EqualFold(name, defaultHandler) {
aliases = append(aliases, "markdown")
defaultFound = true
}
addConverter(converters, c, aliases...)
return nil
}
if err := add(goldmark.Provider); err != nil {
return nil, err
}
if err := add(asciidocext.Provider, "ad", "adoc"); err != nil {
return nil, err
}
if err := add(rst.Provider); err != nil {
return nil, err
}
if err := add(pandoc.Provider, "pdc"); err != nil {
return nil, err
}
if err := add(org.Provider); err != nil {
return nil, err
}
if !defaultFound {
msg := "markup: Configured defaultMarkdownHandler %q not found."
if defaultHandler == "blackfriday" {
msg += " Did you mean to use goldmark? Blackfriday was removed in Hugo v0.100.0."
}
return nil, fmt.Errorf(msg, defaultHandler)
}
return &converterRegistry{
config: cfg,
converters: converters,
}, nil
}
type ConverterProvider interface {
Get(name string) converter.Provider
// Default() converter.Provider
GetMarkupConfig() markup_config.Config
GetHighlighter() highlight.Highlighter
}
type converterRegistry struct {
// Maps name (md, markdown, goldmark etc.) to a converter provider.
// Note that this is also used for aliasing, so the same converter
// may be registered multiple times.
// All names are lower case.
converters map[string]converter.Provider
config converter.ProviderConfig
}
func (r *converterRegistry) Get(name string) converter.Provider {
return r.converters[strings.ToLower(name)]
}
func (r *converterRegistry) GetHighlighter() highlight.Highlighter {
return r.config.Highlighter
}
func (r *converterRegistry) GetMarkupConfig() markup_config.Config {
return r.config.MarkupConfig()
}
func addConverter(m map[string]converter.Provider, c converter.Provider, aliases ...string) {
for _, alias := range aliases {
m[alias] = c
}
}
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