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(in-package :panettone.util)
(defun integer-env (var &key default)
(or
(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 "=")))
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