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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
import (
"strings"
"github.com/gohugoio/hugo/markup/org"
"github.com/gohugoio/hugo/markup/asciidoc"
"github.com/gohugoio/hugo/markup/blackfriday"
"github.com/gohugoio/hugo/markup/converter"
"github.com/gohugoio/hugo/markup/mmark"
"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)
add := func(p converter.NewProvider, aliases ...string) error {
c, err := p.New(cfg)
if err != nil {
return err
}
addConverter(converters, c, aliases...)
return nil
}
if err := add(blackfriday.Provider, "md", "markdown", "blackfriday"); err != nil {
return nil, err
}
if err := add(mmark.Provider, "mmark"); err != nil {
return nil, err
}
if err := add(asciidoc.Provider, "asciidoc"); err != nil {
return nil, err
}
if err := add(rst.Provider, "rst"); err != nil {
return nil, err
}
if err := add(pandoc.Provider, "pandoc"); err != nil {
return nil, err
}
if err := add(org.Provider, "org"); err != nil {
return nil, err
}
return &converterRegistry{converters: converters}, nil
}
type ConverterProvider interface {
Get(name string) converter.Provider
}
type converterRegistry struct {
// Maps name (md, markdown, blackfriday 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
}
func (r *converterRegistry) Get(name string) converter.Provider {
return r.converters[strings.ToLower(name)]
}
func addConverter(m map[string]converter.Provider, c converter.Provider, aliases ...string) {
for _, alias := range aliases {
m[alias] = c
}
}
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