func blockRenderer(content string, srange blackfriday.SourceRange, langAndParams string) (string, error) {
lap := strings.Split(langAndParams, "|")
language := lap[0]
var class = ""
var params = ""
if len(lap) > 1 {
class = lap[1]
}
if len(lap) > 2 {
params = lap[2]
}
var r renderer
var exists bool
if r, exists = renderers[language]; !exists {
return "", fmt.Errorf("Handle for language " + language + " does not exist")
}
if imgR, ok := r.(imageRenderer); ok {
hasher := sha1.New()
mustWriteString(hasher, content)
sha1 := hasher.Sum(nil)
ID := hex.EncodeToString(sha1[:])
filename := ID + "." + imgR.ImageFileExtension()
if !store.ExistsCache(filename) {
filenameWithPath := store.GetCachePath(filename)
if err := imgR.RenderToFile(content, params, filenameWithPath); err != nil {
return "", err
}
}
imgloc := fmt.Sprintf("<img src=/cache/%s class=\""+class+"\" %s><br>", filename, srange.Attrs())
return imgloc, nil
}
divR := r.(divRenderer)
rendered, err := divR.RenderToBuffer(content, params)
if err != nil {
return "", err
}
div := fmt.Sprintf("<div class=\""+class+"\" %s>%s</div><br>", srange.Attrs(), string(rendered))
return div, nil
}
func doGETCache(c *gin.Context) {
hash := normalize(c.Param("hash"))
file := store.GetCachePath(hash)
c.File(file)
}