62 lines
1.5 KiB
Go
62 lines
1.5 KiB
Go
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package rendering
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import (
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"bytes"
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"embed"
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"hash/fnv"
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"html/template"
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"sync"
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"github.com/Masterminds/sprig/v3"
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"github.com/gomarkdown/markdown"
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mdhtml "github.com/gomarkdown/markdown/html"
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"github.com/gomarkdown/markdown/parser"
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)
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var (
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//go:embed templates/*.gohtml
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templatesFS embed.FS
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templates *template.Template
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templateRenderBufferPool = &sync.Pool{
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New: func() interface{} {
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return new(bytes.Buffer)
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},
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}
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)
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func init() {
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templates = template.New("rendering").
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Funcs(sprig.FuncMap()).
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Funcs(template.FuncMap{
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"renderMarkdown": func(md string) template.HTML {
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rr := &RevealRenderer{
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Hash: fnv.New32a(),
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}
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mdParser := parser.NewWithExtensions(parserExtensions)
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renderer := mdhtml.NewRenderer(mdhtml.RendererOptions{
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Flags: mdhtml.CommonFlags | mdhtml.HrefTargetBlank,
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RenderNodeHook: rr.RenderHook,
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})
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renderedHTML := markdown.ToHTML([]byte(md), mdParser, renderer)
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//nolint:gosec // template should be esacped
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return template.HTML(renderedHTML)
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},
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})
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var err error
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if templates, err = templates.ParseFS(templatesFS, "templates/*.gohtml"); err != nil {
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panic(err)
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}
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}
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func renderTemplate(templateName string, data interface{}) (output []byte, err error) {
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buffer := templateRenderBufferPool.Get().(*bytes.Buffer)
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defer func() {
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buffer.Reset()
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templateRenderBufferPool.Put(buffer)
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}()
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err = templates.ExecuteTemplate(buffer, templateName, data)
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return buffer.Bytes(), err
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}
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