hugo/markup/org/convert.go

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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 org converts Emacs Org-Mode to HTML.
package org
import (
"bytes"
"github.com/gohugoio/hugo/identity"
"github.com/gohugoio/hugo/markup/converter"
"github.com/niklasfasching/go-org/org"
"github.com/spf13/afero"
)
// Provider is the package entry point.
var Provider converter.ProviderProvider = provide{}
type provide struct {
}
func (p provide) New(cfg converter.ProviderConfig) (converter.Provider, error) {
return converter.NewProvider("org", func(ctx converter.DocumentContext) (converter.Converter, error) {
return &orgConverter{
ctx: ctx,
cfg: cfg,
}, nil
}), nil
}
type orgConverter struct {
ctx converter.DocumentContext
cfg converter.ProviderConfig
}
func (c *orgConverter) Convert(ctx converter.RenderContext) (converter.Result, error) {
logger := c.cfg.Logger
config := org.New()
config.Log = logger.WARN
config.ReadFile = func(filename string) ([]byte, error) {
return afero.ReadFile(c.cfg.ContentFs, filename)
}
writer := org.NewHTMLWriter()
writer.HighlightCodeBlock = func(source, lang string) string {
highlightedSource, err := c.cfg.Highlight(source, lang, "")
if err != nil {
logger.ERROR.Printf("Could not highlight source as lang %s. Using raw source.", lang)
return source
}
return highlightedSource
}
html, err := config.Parse(bytes.NewReader(ctx.Src), c.ctx.DocumentName).Write(writer)
if err != nil {
logger.ERROR.Printf("Could not render org: %s. Using unrendered content.", err)
return converter.Bytes(ctx.Src), nil
}
return converter.Bytes([]byte(html)), nil
}
func (c *orgConverter) Supports(feature identity.Identity) bool {
return false
}