24 lines
421 B
Go
24 lines
421 B
Go
package gravatar
|
|
|
|
import (
|
|
"crypto/md5"
|
|
"fmt"
|
|
"strings"
|
|
)
|
|
|
|
const baseUrl = "https://www.gravatar.com/avatar"
|
|
const defaultSize = 80
|
|
const maxSize = 2048
|
|
|
|
func Url(email string, size int) string {
|
|
email = strings.ToLower(email)
|
|
email = strings.TrimSpace(email)
|
|
hash := md5.Sum([]byte(email))
|
|
if size < 1 {
|
|
size = defaultSize
|
|
}
|
|
size = min(maxSize, size)
|
|
|
|
return fmt.Sprintf("%s/%x?s=%d", baseUrl, hash, size)
|
|
}
|