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annotate wdown.go @ 5:534fa4c6668e

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Add command line argument parsing
author Jonatan Werpers <jonatan@werpers.com>
date Tue, 16 Jun 2020 21:23:38 +0200
parents 0b747e2d51c9
children a5f397e25cb7
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1 package main
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3 import (
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4 "flag"
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5 "fmt"
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6 "io/ioutil"
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7 "log"
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8 "os"
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10 "github.com/yuin/goldmark"
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11 highlighting "github.com/yuin/goldmark-highlighting"
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12 "github.com/yuin/goldmark/extension"
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13 "github.com/yuin/goldmark/parser"
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14 )
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16 func main() {
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17 flag.Parse()
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18
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19 if flag.NArg() < 1 {
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20 fmt.Println("Please provide a markdown file for parsing.")
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21 os.Exit(1)
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22 }
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23
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24 source, err := ioutil.ReadFile(flag.Arg(0))
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26 if err != nil {
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27 log.Fatal(err)
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28 }
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29
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30 md := goldmark.New(
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31 goldmark.WithExtensions(
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32 extension.GFM,
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33 highlighting.Highlighting,
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34 ),
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35 goldmark.WithParserOptions(
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36 parser.WithAutoHeadingID(),
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37 ),
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38 )
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39
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40 err = md.Convert(source, os.Stdout)
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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 }