blgo/handler/template.go

51 lines
1.1 KiB
Go

package handler
import (
"html/template"
"io/ioutil"
"os"
"github.com/sirupsen/logrus"
)
// CurrentTheme is the set of template being used.
var CurrentTheme *template.Template
// themeCSS is the CSS of the current theme.
var themeCSS []byte
// SetTheme parses the provided theme name and sets it as the current theme.
func SetTheme(themeName string) error {
var err error
folder := "templates/" + themeName + "/"
CurrentTheme, err = template.ParseFiles(
folder+"index.tmpl", // Homepage (listing).
folder+"404.tmpl", // Post not found.
folder+"500.tmpl", // Internal error.
folder+"post.tmpl", // Page for posts.
)
if err != nil {
return err
}
// Check if the style CSS exists and is not a directory.
info, err := os.Stat(folder + "style.css")
if os.IsNotExist(err) || (info != nil && info.IsDir()) {
return nil
}
f, err := os.Open(folder + "style.css")
if err != nil {
return err
}
defer func() {
err := f.Close()
if err != nil {
logrus.Fatalf("Error while closing theme CSS file: %v", err)
}
}()
themeCSS, err = ioutil.ReadAll(f)
return err
}