Function NormalizeImageMediaType

models/image.go:60–69

NormalizeImageMediaType lowercases and strips any parameters (e.g. "image/jpeg; charset=binary" -> "image/jpeg") and reports whether the result is a supported image type. Also folds the common "image/jpg" alias onto the canonical "image/jpeg".

(mime string)

// result is a supported image type. Also folds the common "image/jpg"
// alias onto the canonical "image/jpeg".
func NormalizeImageMediaType(mime string) (string, bool) {
	mt := strings.ToLower(strings.TrimSpace(mime))
	if i := strings.IndexByte(mt, ';'); i >= 0 {
		mt = strings.TrimSpace(mt[:i])
	}
	if mt == "image/jpg" {
		mt = "image/jpeg"
	}
	return mt, supportedImageMediaTypes[mt]
}

// DetectImageMediaType sniffs the media type from the leading bytes and
// reports whether it is a supported image. Used when an attachment has