func printPresentation(path string) {
pres, err := doc.GetPresentation(http.DefaultClient, path)
if err != nil {
log.Fatal(err)
}
fmt.Printf("%s\n", pres.Files[pres.Filename])
for name, data := range pres.Files {
if name != pres.Filename {
fmt.Printf("---------- %s ----------\n%s\n", name, data)
}
}
}
func servePresentation(resp web.Response, req *web.Request) error {
if p := path.Clean(req.URL.Path); p != req.URL.Path {
return web.Redirect(resp, req, p, 301, nil)
}
presMu.Lock()
for p, pres := range presentations {
if time.Since(pres.Updated) > 30*time.Minute {
delete(presentations, p)
}
}
p := req.RouteVars["path"]
pres := presentations[p]
presMu.Unlock()
if pres == nil {
var err error
log.Println("Fetch presentation ", p)
pres, err = doc.GetPresentation(httpClient, p)
if err != nil {
return err
}
presMu.Lock()
presentations[p] = pres
presMu.Unlock()
}
ctx := &present.Context{
ReadFile: func(name string) ([]byte, error) {
if p, ok := pres.Files[name]; ok {
return p, nil
}
return nil, errors.New("pres file not found")
},
}
doc, err := ctx.Parse(bytes.NewReader(pres.Files[pres.Filename]), pres.Filename, 0)
if err != nil {
return err
}
return renderPresentation(resp, p, doc)
}