Revision 3331
Added by Aaron Marcuse-Kubitza over 12 years ago
| lib/xml_dom.py | ||
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| 244 | 244 |
return children |
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def merge(from_, into): |
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'''The into node is saved; the from_ node is deleted.''' |
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'''Merges two nodes of the same tag name and their newly-adjacent children. |
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@post The into node is saved; the from_ node is deleted. |
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''' |
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if from_ == None or into == None: return # base case |
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if from_.tagName != into.tagName: return # not mergeable |
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from_first = from_.firstChild # save before merge |
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for child in NodeIter(from_): into.appendChild(child) |
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remove(from_) |
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def merge_adjacent(node): |
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'''Repeatedly merges a node with its siblings as long as they or their |
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newly-adjacent children have the same tag name''' |
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if node == None: return # base case |
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for node_, next in [(node.previousSibling, node), (node, node.nextSibling)]: |
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if node_ != None and next != None and node_.tagName == next.tagName: |
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next_first = next.firstChild # save before merge |
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merge(next, node_) |
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merge_adjacent(next_first) # previousSibling is now node_.lastChild |
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# Recurse |
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merge(from_first, from_first.previousSibling) # = into.lastChild |
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def merge_by_name(root, name): |
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'''Merges siblings in root with the given name''' |
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children = by_tag_name(root, name) |
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child0 = children.pop(0) |
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for child in children: merge(child, child0) |
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def merge_same_name(node): |
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'''Merges nodes with the same name as a node, using merge_adjacent()''' |
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for node_ in by_tag_name(node.parentNode, node.tagName): |
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if node_ is node: continue # not self |
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merge_adjacent(node_) |
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'''Merges nodes with the same name as a node''' |
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merge_by_name(node.parentNode, node.tagName) |
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##### XML documents |
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Also available in: Unified diff
xml_dom.py: Moved merge_adjacent() recursion and name checking into merge() so that other callers of merge() can take advantage of it, too. Added merge_by_name() and use it in merge_same_name(). Removed now-unused merge_adjacent().