summaryrefslogtreecommitdiff
path: root/srv/src/post/renderer.go
diff options
context:
space:
mode:
Diffstat (limited to 'srv/src/post/renderer.go')
-rw-r--r--srv/src/post/renderer.go96
1 files changed, 0 insertions, 96 deletions
diff --git a/srv/src/post/renderer.go b/srv/src/post/renderer.go
deleted file mode 100644
index 74acc25..0000000
--- a/srv/src/post/renderer.go
+++ /dev/null
@@ -1,96 +0,0 @@
-package post
-
-import (
- _ "embed"
- "fmt"
- "html/template"
- "io"
-
- "github.com/gomarkdown/markdown"
- "github.com/gomarkdown/markdown/html"
- "github.com/gomarkdown/markdown/parser"
- "github.com/mediocregopher/blog.mediocregopher.com/srv/tpl"
-)
-
-// RenderablePost is a Post wrapped with extra information necessary for
-// rendering.
-type RenderablePost struct {
- StoredPost
- SeriesPrevious, SeriesNext *StoredPost
-}
-
-// NewRenderablePost wraps an existing Post such that it can be rendered.
-func NewRenderablePost(store Store, post StoredPost) (RenderablePost, error) {
-
- renderablePost := RenderablePost{
- StoredPost: post,
- }
-
- if post.Series != "" {
-
- seriesPosts, err := store.GetBySeries(post.Series)
- if err != nil {
- return RenderablePost{}, fmt.Errorf(
- "fetching posts for series %q: %w",
- post.Series, err,
- )
- }
-
- var foundThis bool
-
- for i := range seriesPosts {
-
- seriesPost := seriesPosts[i]
-
- if seriesPost.ID == post.ID {
- foundThis = true
- continue
- }
-
- if !foundThis {
- renderablePost.SeriesPrevious = &seriesPost
- continue
- }
-
- renderablePost.SeriesNext = &seriesPost
- break
- }
- }
-
- return renderablePost, nil
-}
-
-// Renderer takes a Post and renders it to some encoding.
-type Renderer interface {
- Render(io.Writer, RenderablePost) error
-}
-
-func mdBodyToHTML(body []byte) []byte {
- parserExt := parser.CommonExtensions | parser.AutoHeadingIDs
- parser := parser.NewWithExtensions(parserExt)
-
- htmlFlags := html.CommonFlags | html.HrefTargetBlank
- htmlRenderer := html.NewRenderer(html.RendererOptions{Flags: htmlFlags})
-
- return markdown.ToHTML(body, parser, htmlRenderer)
-}
-
-type mdHTMLRenderer struct{}
-
-// NewMarkdownToHTMLRenderer renders Posts from markdown to HTML.
-func NewMarkdownToHTMLRenderer() Renderer {
- return mdHTMLRenderer{}
-}
-
-func (r mdHTMLRenderer) Render(into io.Writer, post RenderablePost) error {
-
- data := struct {
- RenderablePost
- Body template.HTML
- }{
- RenderablePost: post,
- Body: template.HTML(mdBodyToHTML([]byte(post.Body))),
- }
-
- return tpl.HTML.ExecuteTemplate(into, "post.html", data)
-}