24 lines
878 B
Python
24 lines
878 B
Python
from lxml import etree
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class XMLParser:
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def __init__(self, parse_function):
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self.parse_function = parse_function
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@staticmethod
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def fast_iter(context, func, *args, **kwargs):
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for event, elem in context:
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# print event
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func(elem, *args, **kwargs)
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# It's safe to call clear() here because no descendants will be accessed
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elem.clear()
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# Also eliminate now-empty references from the root node to elem
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for ancestor in elem.xpath('ancestor-or-self::*'):
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while ancestor.getprevious() is not None:
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del ancestor.getparent()[0]
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del context
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def parse_buffer(self, data_buffer, tag_name):
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context = etree.iterparse(data_buffer, events=('end',), tag=tag_name)
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self.fast_iter(context, lambda x: self.parse_function(x.attrib))
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