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import re
import xml.etree.ElementTree as ET
from django.utils.encoding import smart_unicode
from django.utils.xmlutils import SimplerXMLGenerator
from django.core.urlresolvers import resolve
from django.conf import settings
try:
import cStringIO as StringIO
except ImportError:
import StringIO
#def admin_media_prefix(request):
# """Adds the ADMIN_MEDIA_PREFIX to the request context."""
# return {'ADMIN_MEDIA_PREFIX': settings.ADMIN_MEDIA_PREFIX}
def as_tuple(obj):
"""Given obj return a tuple"""
if obj is None:
return ()
elif isinstance(obj, list):
return tuple(obj)
elif isinstance(obj, tuple):
return obj
return (obj,)
def url_resolves(url):
"""Return True if the given URL is mapped to a view in the urlconf, False otherwise."""
try:
resolve(url)
except:
return False
return True
# From http://www.koders.com/python/fidB6E125C586A6F49EAC38992CF3AFDAAE35651975.aspx?s=mdef:xml
#class object_dict(dict):
# """object view of dict, you can
# >>> a = object_dict()
# >>> a.fish = 'fish'
# >>> a['fish']
# 'fish'
# >>> a['water'] = 'water'
# >>> a.water
# 'water'
# >>> a.test = {'value': 1}
# >>> a.test2 = object_dict({'name': 'test2', 'value': 2})
# >>> a.test, a.test2.name, a.test2.value
# (1, 'test2', 2)
# """
# def __init__(self, initd=None):
# if initd is None:
# initd = {}
# dict.__init__(self, initd)
#
# def __getattr__(self, item):
# d = self.__getitem__(item)
# # if value is the only key in object, you can omit it
# if isinstance(d, dict) and 'value' in d and len(d) == 1:
# return d['value']
# else:
# return d
#
# def __setattr__(self, item, value):
# self.__setitem__(item, value)
# From xml2dict
class XML2Dict(object):
def __init__(self):
pass
def _parse_node(self, node):
node_tree = {}
# Save attrs and text, hope there will not be a child with same name
if node.text:
node_tree = node.text
for (k,v) in node.attrib.items():
k,v = self._namespace_split(k, v)
node_tree[k] = v
#Save childrens
for child in node.getchildren():
tag, tree = self._namespace_split(child.tag, self._parse_node(child))
if tag not in node_tree: # the first time, so store it in dict
node_tree[tag] = tree
continue
old = node_tree[tag]
if not isinstance(old, list):
node_tree.pop(tag)
node_tree[tag] = [old] # multi times, so change old dict to a list
node_tree[tag].append(tree) # add the new one
return node_tree
def _namespace_split(self, tag, value):
"""
Split the tag '{http://cs.sfsu.edu/csc867/myscheduler}patients'
ns = http://cs.sfsu.edu/csc867/myscheduler
name = patients
"""
result = re.compile("\{(.*)\}(.*)").search(tag)
if result:
value.namespace, tag = result.groups()
return (tag, value)
def parse(self, file):
"""parse a xml file to a dict"""
f = open(file, 'r')
return self.fromstring(f.read())
def fromstring(self, s):
"""parse a string"""
t = ET.fromstring(s)
unused_root_tag, root_tree = self._namespace_split(t.tag, self._parse_node(t))
return root_tree
def xml2dict(input):
return XML2Dict().fromstring(input)
# Piston:
class XMLEmitter():
def _to_xml(self, xml, data):
if isinstance(data, (list, tuple)):
for item in data:
xml.startElement("list-item", {})
self._to_xml(xml, item)
xml.endElement("list-item")
elif isinstance(data, dict):
for key, value in data.iteritems():
xml.startElement(key, {})
self._to_xml(xml, value)
xml.endElement(key)
else:
xml.characters(smart_unicode(data))
def dict2xml(self, data):
stream = StringIO.StringIO()
xml = SimplerXMLGenerator(stream, "utf-8")
xml.startDocument()
xml.startElement("root", {})
self._to_xml(xml, data)
xml.endElement("root")
xml.endDocument()
return stream.getvalue()
def dict2xml(input):
return XMLEmitter().dict2xml(input)
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