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(define-module (sxml util)
:use-module (ice-9 match)
:export (get-root-element add-attributes))
(define (get-root-element tree)
(match tree
(('*TOP* ('*PI* 'xml body) (root . children))
(lambda (modifier) `(*TOP* (*PI* xml ,body)
,(modifier `(,root ,@children)))))
(('*TOP* (root . children))
(lambda (modifier) `(*TOP* ,(modifier `(,root ,@children)))))
((root . children)
(lambda (modifier) `(*TOP* ,(modifier `(,root ,@children)))))))
(define (add-attributes element added-attributes)
(match element
((el ('@ . attributes) . children)
`(,el (@ ,@attributes ,@added-attributes)
,@children))
((el . children)
`(,el (@ ,@added-attributes)
,@children))))
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