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102 lines
2.9 KiB
Python
102 lines
2.9 KiB
Python
from django.utils.encoding import smart_unicode
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from django.utils.xmlutils import SimplerXMLGenerator
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from rest_framework.compat import StringIO
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import re
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import xml.etree.ElementTree as ET
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# From xml2dict
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class XML2Dict(object):
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def __init__(self):
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pass
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def _parse_node(self, node):
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node_tree = {}
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# Save attrs and text, hope there will not be a child with same name
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if node.text:
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node_tree = node.text
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for (k, v) in node.attrib.items():
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k, v = self._namespace_split(k, v)
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node_tree[k] = v
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#Save childrens
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for child in node.getchildren():
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tag, tree = self._namespace_split(child.tag, self._parse_node(child))
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if tag not in node_tree: # the first time, so store it in dict
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node_tree[tag] = tree
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continue
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old = node_tree[tag]
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if not isinstance(old, list):
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node_tree.pop(tag)
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node_tree[tag] = [old] # multi times, so change old dict to a list
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node_tree[tag].append(tree) # add the new one
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return node_tree
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def _namespace_split(self, tag, value):
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"""
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Split the tag '{http://cs.sfsu.edu/csc867/myscheduler}patients'
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ns = http://cs.sfsu.edu/csc867/myscheduler
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name = patients
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"""
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result = re.compile("\{(.*)\}(.*)").search(tag)
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if result:
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value.namespace, tag = result.groups()
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return (tag, value)
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def parse(self, file):
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"""parse a xml file to a dict"""
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f = open(file, 'r')
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return self.fromstring(f.read())
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def fromstring(self, s):
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"""parse a string"""
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t = ET.fromstring(s)
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unused_root_tag, root_tree = self._namespace_split(t.tag, self._parse_node(t))
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return root_tree
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def xml2dict(input):
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return XML2Dict().fromstring(input)
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# Piston:
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class XMLRenderer():
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def _to_xml(self, xml, data):
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if isinstance(data, (list, tuple)):
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for item in data:
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xml.startElement("list-item", {})
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self._to_xml(xml, item)
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xml.endElement("list-item")
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elif isinstance(data, dict):
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for key, value in data.iteritems():
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xml.startElement(key, {})
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self._to_xml(xml, value)
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xml.endElement(key)
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elif data is None:
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# Don't output any value
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pass
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else:
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xml.characters(smart_unicode(data))
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def dict2xml(self, data):
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stream = StringIO.StringIO()
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xml = SimplerXMLGenerator(stream, "utf-8")
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xml.startDocument()
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xml.startElement("root", {})
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self._to_xml(xml, data)
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xml.endElement("root")
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xml.endDocument()
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return stream.getvalue()
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def dict2xml(input):
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return XMLRenderer().dict2xml(input)
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