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# XML DOM tree manipulation
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from xml.dom import Node
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class NodeElemIter:
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def __init__(self, node): self.child = node.firstChild
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def __iter__(self): return self
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def curr(self):
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while self.child != None:
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if self.child.nodeType == Node.ELEMENT_NODE: return self.child
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self.child = self.child.nextSibling
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raise StopIteration
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def next(self):
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child = self.curr()
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self.child = self.child.nextSibling
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return child
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def first_elem(node): return NodeElemIter(node).next()
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def is_text(node):
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for child in NodeElemIter(node): return False # has an element node
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return True
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def value(node):
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if node.firstChild != None: return node.firstChild.nodeValue
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else: return None
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def get_id(node): return node.getAttribute('id')
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def set_id(node, get_id): node.setAttribute('id', get_id)
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