Created
March 19, 2022 12:56
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This is the golang code for rendering a markdown file to HTML/Bulma CSS
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| package main | |
| import ( | |
| "bytes" | |
| "github.com/gomarkdown/markdown" | |
| "github.com/gomarkdown/markdown/ast" | |
| "github.com/gomarkdown/markdown/html" | |
| "io" | |
| "io/ioutil" | |
| "strconv" | |
| "text/template" | |
| ) | |
| func main() { | |
| htmlHeader := ` | |
| <html lang="en"> | |
| <head> | |
| <meta charset="UTF-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge"> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.3/css/bulma.min.css"> | |
| <title>Blog Post Example</title> | |
| </head> | |
| <body> | |
| <br> | |
| <div class="container is-max-desktop"> | |
| <div class="content">` | |
| htmlFooter := ` | |
| </div> | |
| </div> | |
| <br> | |
| </body> | |
| </html>` | |
| md, err := ioutil.ReadFile("./blog-post-example.md") | |
| if err != nil { | |
| panic(err) | |
| } | |
| opts := html.RendererOptions{ | |
| Flags: html.FlagsNone, | |
| RenderNodeHook: renderHook, | |
| } | |
| renderer := html.NewRenderer(opts) | |
| output := string(markdown.ToHTML(md, nil, renderer)) | |
| t := template.New("Render") | |
| t, err = t.Parse(htmlHeader + "{{.}}" + htmlFooter) | |
| t = template.Must(t, err) | |
| var processed bytes.Buffer | |
| t.Execute(&processed, output) | |
| err = ioutil.WriteFile("index.html", processed.Bytes(), 0644) | |
| if err != nil { | |
| panic(err) | |
| } | |
| } | |
| func renderHook(w io.Writer, node ast.Node, entering bool) (ast.WalkStatus, bool) { | |
| if _, ok := node.(*ast.Heading); ok { | |
| level := strconv.Itoa(node.(*ast.Heading).Level) | |
| if entering && level == "1" { | |
| w.Write([]byte(`<h1 class="title is-1 has-text-centered">`)) | |
| } else if entering { | |
| w.Write([]byte("<h" + level + ">")) | |
| } else { | |
| w.Write([]byte("</h" + level + ">")) | |
| } | |
| return ast.GoToNext, true | |
| } else if _, ok := node.(*ast.Image); ok { | |
| src := string(node.(*ast.Image).Destination) | |
| c := node.(*ast.Image).GetChildren()[0] | |
| alt := string(c.AsLeaf().Literal) | |
| if entering && alt != "" { | |
| w.Write([]byte(`<figure class="image is-5by3"><img src="` + src + `" alt="` + alt + `">`)) | |
| } else if entering { | |
| w.Write([]byte(`<figure class="image is-5by3"><img src="` + src + `">`)) | |
| } else { | |
| w.Write([]byte(`</figure>`)) | |
| } | |
| return ast.SkipChildren, true | |
| } else { | |
| return ast.GoToNext, false | |
| } | |
| } |
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