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renderer.go
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/
renderer.go
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package veun
import (
"bytes"
"context"
"fmt"
"html/template"
)
func RenderToHTML(ctx context.Context, r Renderable, errHandler any) (template.HTML, error) {
var empty template.HTML
if r == nil {
return empty, nil
}
out, err := r.RenderToHTML(ctx)
if err != nil {
return handleRenderError(ctx, err, errHandler)
}
return out, nil
}
func Render(ctx context.Context, v AsRenderable) (template.HTML, error) {
var empty template.HTML
if v == nil {
return empty, nil
}
r, err := v.Renderable(ctx)
if err != nil {
return handleRenderError(ctx, err, v)
}
out, err := RenderToHTML(ctx, r, v)
if err != nil {
return empty, err
}
return out, nil
}
type TemplateRenderable struct {
Tpl *template.Template
Data any
}
func (v TemplateRenderable) RenderToHTML(_ context.Context) (template.HTML, error) {
var empty template.HTML
if v.Tpl == nil {
return empty, fmt.Errorf("missing template")
}
var bs bytes.Buffer
if err := v.Tpl.Execute(&bs, v.Data); err != nil {
return empty, fmt.Errorf("tpl.Execute(): %w", err)
}
return template.HTML(bs.String()), nil
}