render.go

package main

import (
	"fmt"
	"net/http"
	"os"
	"strings"

	"vitrine/display"
)

// serveRendered shows a file as a page: markdown rendered to HTML,
// anything else passed through in an iframe pointed at the raw view.
func (s *server) serveRendered(w http.ResponseWriter, r *http.Request, root *os.Root, mount, rel string, size int64) {
	pd := display.PageData{
		Title:   mount + "/" + rel,
		Crumbs:  display.Crumbs("vitrine", display.JoinURL(mount, rel)),
		RawHref: "?fmt=raw",
	}
	if strings.HasSuffix(rel, ".md") && size <= display.MaxRenderSize {
		src, err := root.ReadFile(rel)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		content, err := display.Markdown(src)
		if err != nil {
			http.Error(w, err.Error(), http.StatusInternalServerError)
			return
		}
		pd.Content = content
	} else {
		pd.Iframe = "?fmt=raw"
	}
	s.renderPage(w, pd)
}

// renderPage fills in the server-wide theme name and executes the page template.
func (s *server) renderPage(w http.ResponseWriter, pd display.PageData) {
	pd.ThemeName = s.theme.Name
	w.Header().Set("Content-Type", "text/html; charset=utf-8")
	if err := display.Page(w, pd); err != nil {
		fmt.Fprintf(w, "\n<!-- template error: %v -->", err)
	}
}