convert.go (2251B)
1 // Copyright 2019 The Hugo Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 // http://www.apache.org/licenses/LICENSE-2.0
7 //
8 // Unless required by applicable law or agreed to in writing, software
9 // distributed under the License is distributed on an "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 // See the License for the specific language governing permissions and
12 // limitations under the License.
13
14 // Package org converts Emacs Org-Mode to HTML.
15 package org
16
17 import (
18 "bytes"
19
20 "github.com/gohugoio/hugo/identity"
21
22 "github.com/gohugoio/hugo/markup/converter"
23 "github.com/niklasfasching/go-org/org"
24 "github.com/spf13/afero"
25 )
26
27 // Provider is the package entry point.
28 var Provider converter.ProviderProvider = provide{}
29
30 type provide struct{}
31
32 func (p provide) New(cfg converter.ProviderConfig) (converter.Provider, error) {
33 return converter.NewProvider("org", func(ctx converter.DocumentContext) (converter.Converter, error) {
34 return &orgConverter{
35 ctx: ctx,
36 cfg: cfg,
37 }, nil
38 }), nil
39 }
40
41 type orgConverter struct {
42 ctx converter.DocumentContext
43 cfg converter.ProviderConfig
44 }
45
46 func (c *orgConverter) Convert(ctx converter.RenderContext) (converter.Result, error) {
47 logger := c.cfg.Logger
48 config := org.New()
49 config.Log = logger.Warn()
50 config.ReadFile = func(filename string) ([]byte, error) {
51 return afero.ReadFile(c.cfg.ContentFs, filename)
52 }
53 writer := org.NewHTMLWriter()
54 writer.HighlightCodeBlock = func(source, lang string, inline bool) string {
55 highlightedSource, err := c.cfg.Highlight(source, lang, "")
56 if err != nil {
57 logger.Errorf("Could not highlight source as lang %s. Using raw source.", lang)
58 return source
59 }
60 return highlightedSource
61 }
62
63 html, err := config.Parse(bytes.NewReader(ctx.Src), c.ctx.DocumentName).Write(writer)
64 if err != nil {
65 logger.Errorf("Could not render org: %s. Using unrendered content.", err)
66 return converter.Bytes(ctx.Src), nil
67 }
68 return converter.Bytes([]byte(html)), nil
69 }
70
71 func (c *orgConverter) Supports(feature identity.Identity) bool {
72 return false
73 }