package rendering import ( "embed" "hash/fnv" "html/template" "github.com/Masterminds/sprig/v3" "github.com/gomarkdown/markdown" mdhtml "github.com/gomarkdown/markdown/html" "github.com/gomarkdown/markdown/parser" "github.com/valyala/bytebufferpool" "github.com/baez90/goveal/rendering/emoji" ) var ( //go:embed templates/*.gohtml templatesFS embed.FS templates *template.Template ) func init() { templates = template.New("rendering"). Funcs(sprig.FuncMap()). Funcs(template.FuncMap{ "renderMarkdown": func(md string) template.HTML { rr := &RevealRenderer{ Hash: fnv.New32a(), } emojis := emoji.NewEmojiParser() mdParser := parser.NewWithExtensions(parserExtensions) mdParser.Opts.ParserHook = emojis.EmojiParser renderer := mdhtml.NewRenderer(mdhtml.RendererOptions{ Flags: mdhtml.CommonFlags | mdhtml.HrefTargetBlank, RenderNodeHook: rr.RenderHook, }) renderedHTML := markdown.ToHTML([]byte(md), mdParser, renderer) //nolint:gosec // template should be esacped return template.HTML(renderedHTML) }, }) var err error if templates, err = templates.ParseFS(templatesFS, "templates/*.gohtml"); err != nil { panic(err) } } func renderTemplate(templateName string, data any) (output []byte, err error) { buffer := bytebufferpool.Get() defer func() { buffer.Reset() bytebufferpool.Put(buffer) }() err = templates.ExecuteTemplate(buffer, templateName, data) return buffer.Bytes(), err }