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Diffstat (limited to 'web/panettone/src/util.lisp')
| -rw-r--r-- | web/panettone/src/util.lisp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/web/panettone/src/util.lisp b/web/panettone/src/util.lisp index 9fd9ceaa79..2abedf7b8f 100644 --- a/web/panettone/src/util.lisp +++ b/web/panettone/src/util.lisp @@ -5,3 +5,11 @@ (when-let ((str (uiop:getenvp var))) (try-parse-integer str)) default)) + +(defun add-missing-base64-padding (s) + "Add any missing padding characters to the (un-padded) base64 string `S', such +that it can be successfully decoded by the `BASE64' package" + ;; I apologize + (let* ((needed-padding (mod (length s) 4)) + (pad-chars (if (zerop needed-padding) 0 (- 4 needed-padding)))) + (format nil "~A~v@{~A~:*~}" s pad-chars "="))) |