+(defun mm-url-encode-multipart-form-data (pairs &optional boundary)
+ "Return PAIRS encoded in multipart/form-data."
+ ;; RFC1867
+ ;; Get a good boundary
+ (unless boundary
+ (setq boundary (mml-compute-boundary '())))
+ (concat
+ ;; Start with the boundary
+ "--" boundary "\r\n"
+ ;; Create name value pairs
+ (mapconcat
+ 'identity
+ ;; Delete any returned items that are empty
+ (delq nil
+ (mapcar (lambda (data)
+ (cond ((equal (car data) "file")
+ ;; For each pair
+ (format
+ ;; Encode the name
+ "Content-Disposition: form-data; name=%S; filename=%S\r\nContent-Type: text/plain; charset=utf-8\r\nContent-Transfer-Encoding: binary\r\n\r\n%s"
+ (cdr (assoc "name" (cdr data))) (cdr (assoc "filename" (cdr data)))
+ (cond ((stringp (cdr (assoc "filedata" (cdr data))))
+ (cdr (assoc "filedata" (cdr data))))
+ ((integerp (cdr (assoc "filedata" (cdr data))))
+ (number-to-string (cdr (assoc "filedata" (cdr data))))))))
+ ((equal (car data) "submit")
+ "Content-Disposition: form-data; name=\"submit\"\r\n\r\nSubmit\r\n")
+ (t
+ (format
+ "Content-Disposition: form-data;name=%S\r\n\r\n%s\r\n"
+ (car data) (concat (mm-url-form-encode-xwfu (cdr data)))
+ ))))
+ pairs))
+ ;; use the boundary as a separator
+ (concat "\r\n--" boundary "\r\n"))
+ ;; put a boundary at the end.
+ "--" boundary "--\r\n"))
+