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annotate wdown.go @ 6:a5f397e25cb7

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Add ability to render the markdown inside a template
author Jonatan Werpers <jonatan@werpers.com>
date Tue, 16 Jun 2020 22:10:31 +0200
parents 534fa4c6668e
children a5aa39557726
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1 package main
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2
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3 import (
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4 "bytes"
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5 "flag"
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6 "fmt"
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7 "io/ioutil"
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8 "log"
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9 "os"
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10
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11 "github.com/cbroglie/mustache"
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12 "github.com/yuin/goldmark"
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13 highlighting "github.com/yuin/goldmark-highlighting"
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14 "github.com/yuin/goldmark/extension"
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15 "github.com/yuin/goldmark/parser"
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16 )
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18 func main() {
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19 var templateFilename string
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21 flag.StringVar(&templateFilename, "tmpl", "", "Template file to render the html inside. The content of the markdown file will replace the placeholder {{content}}.")
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22
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23 flag.Parse()
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24
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25 if flag.NArg() < 1 {
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26 fmt.Println("Please provide a markdown file for parsing.")
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27 os.Exit(1)
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28 }
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29
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30 var useTemplate = false
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31 if templateFilename != "" {
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32 useTemplate = true
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33 }
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34
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35 tmpl, err := mustache.ParseFile(templateFilename)
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36 if err != nil {
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37 log.Fatal(err)
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38 }
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39
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40 source, err := ioutil.ReadFile(flag.Arg(0))
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42 if err != nil {
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43 log.Fatal(err)
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44 }
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45
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46 md := goldmark.New(
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47 goldmark.WithExtensions(
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48 extension.GFM,
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49 highlighting.Highlighting,
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50 ),
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51 goldmark.WithParserOptions(
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52 parser.WithAutoHeadingID(),
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53 ),
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54 )
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55
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56 var htmlContent bytes.Buffer
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57 err = md.Convert(source, &htmlContent)
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58 if err != nil {
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59 log.Fatal(err)
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60 }
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62 if useTemplate {
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63 context := map[string]string{
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64 "content": htmlContent.String(),
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65 }
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66 err := tmpl.FRender(os.Stdout, context)
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67 if err != nil {
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68 log.Fatal(err)
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69 }
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70 } else {
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71 fmt.Print(htmlContent)
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72 }
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73 }