def convert(self, is_collection, url, xpath, xml_string):
''' Entry for XML -> JSON conversion
is_collection -- True if the results is in the collection+json format
xpath -- the xpath corresponding to the query results being translated
xml_string -- the XML results to translate
'''
url_pieces, *_ = split_url(url)
schema_root = find_child_by_path(self._schema, url_pieces)
target_type = find_target_type(self._schema, url_pieces)
xml_root = lxml.etree.fromstring(xml_string)
elements_to_translate = xml_root.xpath(xpath)
json = list()
prefixes = list()
is_list = schema_root.is_listy() and target_type == TargetType.List
is_leaf = schema_root.is_leafy()
json.append("{")
if is_collection or is_list:
pieces = elements_to_translate[0].tag.split("}")
try:
target_name = pieces[1]
target_prefix = _split_namespace(schema_root.get_ns())
prefixes.append(target_prefix)
except IndexError:
target_name = pieces[0]
target_prefix = ""
if is_collection:
json.append('"collection":{')
json.append('"%s%s":[' % (target_prefix, target_name))
elif is_list:
json.append('"%s%s":[' % (target_prefix, target_name))
for element, is_last in iterate_with_lookahead(elements_to_translate):
name, prefix, prefixes = _split_tag_and_update_prefixes(
element, prefixes)
schema_node = schema_root
if is_collection or is_list:
json.append('{')
elif is_leaf:
pass
else:
json.append('"%s%s" :{' % (prefix, name))
json.append(
self._translate_node(is_collection, schema_root, element,
prefixes))
if not is_leaf:
json.append('}')
if not is_last:
json.append(',')
if prefix != "":
prefixes.pop()
if is_collection:
json.append(']')
json.append('}')
elif is_list:
json.append(']')
json.append("}")
return ''.join(json)
def convert(self, is_collection, url, xpath, xml_string):
''' Entry for XML -> JSON conversion
is_collection -- True if the results is in the collection+json format
xpath -- the xpath corresponding to the query results being translated
xml_string -- the XML results to translate
'''
url_pieces, *_ = split_url(url)
schema_root = find_child_by_path(self._schema, url_pieces)
target_type = find_target_type(self._schema, url_pieces)
xml_root = lxml.etree.fromstring(xml_string)
elements_to_translate = xml_root.xpath(xpath)
json = list()
prefixes = list()
is_list = schema_root.is_listy() and target_type == TargetType.List
is_leaf = schema_root.is_leafy()
json.append("{")
if is_collection or is_list:
pieces = elements_to_translate[0].tag.split("}")
try:
target_name = pieces[1]
target_prefix = _split_namespace(schema_root.get_ns())
prefixes.append(target_prefix)
except IndexError:
target_name = pieces[0]
target_prefix = ""
if is_collection:
json.append('"collection":{')
json.append('"%s%s":[' % (target_prefix, target_name))
elif is_list:
json.append('"%s%s":[' % (target_prefix, target_name))
for element, is_last in iterate_with_lookahead(elements_to_translate):
name, prefix, prefixes = _split_tag_and_update_prefixes(element, prefixes)
schema_node = schema_root
if is_collection or is_list:
json.append('{')
elif is_leaf:
pass
else:
json.append('"%s%s" :{' % (prefix,name))
json.append(self._translate_node(is_collection, schema_root, element, prefixes))
if not is_leaf:
json.append('}')
if not is_last:
json.append(',')
if prefix != "":
prefixes.pop()
if is_collection:
json.append(']')
json.append('}')
elif is_list:
json.append(']')
json.append("}")
return ''.join(json)
def _translate_node(self,
is_collection,
schema_root,
xml_node,
prefixes,
depth=0):
''' Translates the given XML node into JSON
is_collection -- True if the results is in the collection+json format
xml_node -- the current XML element to translate
'''
json = list()
first_child = False
current_list = None
current_name = schema_root.get_name()
if schema_root.is_leafy():
schema_root = schema_root.get_parent()
siblings = collect_siblings(xml_node)
if len(siblings) == 0:
if xml_node.text is None:
return '"empty":""'
else:
return '"%s":"%s"' % (current_name, xml_node.text)
for sibling_tag, is_last in iterate_with_lookahead(siblings):
sib_xml_nodes = siblings[sibling_tag]
child_schema_node = find_child_by_name(schema_root, sibling_tag)
has_siblings = child_schema_node.is_listy()
if has_siblings:
sib_name, sib_prefix, prefixes = _split_tag_and_update_prefixes(
sib_xml_nodes[0], prefixes)
json.append('"%s%s" : [' % (sib_prefix, sib_name))
for child_xml_node, sib_is_last in iterate_with_lookahead(
sib_xml_nodes):
name, prefix, prefixes = _split_tag_and_update_prefixes(
child_xml_node, prefixes)
value = child_xml_node.text
if not child_schema_node.is_leafy():
# it's a container, so iterate over children
if has_siblings:
json.append('{')
else:
json.append('"%s%s":{' % (prefix, name))
body = self._translate_node(
is_collection,
child_schema_node,
child_xml_node,
prefixes,
depth + 1,
)
json.append(body)
json.append('}')
else:
if child_schema_node.node_type(
).leaf_type == RwYang.LeafType.LEAF_TYPE_EMPTY:
value = "[null]"
elif child_schema_node.node_type(
).leaf_type == RwYang.LeafType.LEAF_TYPE_STRING:
if not value:
value = '""'
else:
value = tornado.escape.json_encode(value)
else:
if not value:
value = '""'
else:
try:
float(value)
except ValueError:
value = tornado.escape.json_encode(value)
if has_siblings:
json.append('%s' % (value))
else:
json.append('"%s" : %s' % (name, value))
if not sib_is_last:
json.append(',')
if prefix != "":
prefixes.pop()
if has_siblings:
json.append(']')
if sib_prefix != "":
prefixes.pop()
if not is_last:
json.append(',')
return ''.join(json)
def _translate_node(self, is_collection, schema_root, xml_node, prefixes, depth=0):
''' Translates the given XML node into JSON
is_collection -- True if the results is in the collection+json format
xml_node -- the current XML element to translate
'''
json = list()
first_child = False
current_list = None
current_name = schema_root.get_name()
if schema_root.is_leafy():
schema_root = schema_root.get_parent()
siblings = collect_siblings(xml_node)
if len(siblings) == 0:
if xml_node.text is None:
return '"empty":""'
else:
return '"%s":"%s"' % (current_name,xml_node.text)
for sibling_tag, is_last in iterate_with_lookahead(siblings):
sib_xml_nodes = siblings[sibling_tag]
child_schema_node = find_child_by_name(schema_root, sibling_tag)
if child_schema_node is None:
self._logger.warning("Unknown Child schema node <%s> for parent <%s>",
sibling_tag, current_name)
if is_last and json[-1] == ",":
json.pop()
continue
has_siblings = child_schema_node.is_listy()
if has_siblings:
sib_name, sib_prefix, prefixes = _split_tag_and_update_prefixes(sib_xml_nodes[0], prefixes)
json.append('"%s%s" : [' % (sib_prefix, sib_name))
for child_xml_node, sib_is_last in iterate_with_lookahead(sib_xml_nodes):
name, prefix, prefixes = _split_tag_and_update_prefixes(child_xml_node, prefixes)
value = child_xml_node.text
if not child_schema_node.is_leafy():
# it's a container, so iterate over children
if has_siblings:
json.append('{')
else:
json.append('"%s%s":{' % (prefix,name))
body = self._translate_node(is_collection,
child_schema_node,
child_xml_node,
prefixes,
depth+1,
)
json.append(body)
json.append('}')
else:
if child_schema_node.node_type().leaf_type == RwYang.LeafType.LEAF_TYPE_EMPTY:
value = "[null]"
elif child_schema_node.node_type().leaf_type == RwYang.LeafType.LEAF_TYPE_STRING:
if not value:
value = '""'
else:
value = tornado.escape.json_encode(value)
else:
if not value:
value = '""'
else:
try:
float(value)
except ValueError:
value = tornado.escape.json_encode(value)
if has_siblings:
json.append('%s' % (value))
else:
json.append('"%s" : %s' % (name, value))
if not sib_is_last:
json.append(',')
if prefix != "":
prefixes.pop()
if has_siblings:
json.append(']')
if sib_prefix != "":
prefixes.pop()
if not is_last:
json.append(',')
return ''.join(json)