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(define-module (sxml namespaced util)
:use-module (sxml namespaced)
:use-module (srfi srfi-1)
:use-module ((ice-9 control) :select (call/ec))
:use-module (hnh util type)
:export (xml-element-hash-key
find-child
element-matches?
root-element
))
(define (xml-element-hash-key tag)
"Returns a value suitable as a key to hash-ref (and family)"
(cons (xml-element-namespace tag)
(xml-element-tagname tag)))
(define (find-child target list)
(typecheck target xml-element?)
(typecheck list (list-of (or xml-element? string?)))
(define target* (xml-element-hash-key target))
(find (lambda (x) (and (xml-element? x)
(equal? target* (xml-element-hash-key x))))
list))
(define (element-matches? target-el tree)
(and (not (null? tree))
(equal?
(xml-element-hash-key target-el)
(xml-element-hash-key (car tree)))))
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