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Sort query parameters according to spec #6

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Sort query parameters according to spec #6

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9 changes: 4 additions & 5 deletions aws-sign4.lisp
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Original file line number Diff line number Diff line change
Expand Up @@ -67,11 +67,10 @@ parameter ESCAPE% is NIL, the % is not escaped."

(defun create-canonical-query-string (params)
(format nil "~{~A~^&~}"
(sort (loop for (key . value) in params
collect (format nil "~A=~A"
(url-encode (string key))
(url-encode (princ-to-string value))))
#'string<)))
(loop for (key . value) in (sort (copy-seq params) #'string< :key #'car)
collect (format nil "~A=~A"
(url-encode (string key))
(url-encode (princ-to-string value))))))

(defun trimall (string)
(string-trim '(#\Space #\Tab) string))
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