Update xmltodict-0.12.0

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JonnyWong16 2021-10-15 00:08:51 -07:00
parent 7dd3963bf2
commit 41ef595edc
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@ -1,7 +1,10 @@
#!/usr/bin/env python
"Makes working with XML feel like you are working with JSON"
from xml.parsers import expat
try:
from defusedexpat import pyexpat as expat
except ImportError:
from xml.parsers import expat
from xml.sax.saxutils import XMLGenerator
from xml.sax.xmlreader import AttributesImpl
try: # pragma no cover
@ -11,13 +14,8 @@ except ImportError: # pragma no cover
from StringIO import StringIO
except ImportError:
from io import StringIO
try: # pragma no cover
from collections import OrderedDict
except ImportError: # pragma no cover
try:
from ordereddict import OrderedDict
except ImportError:
OrderedDict = dict
from collections import OrderedDict
try: # pragma no cover
_basestring = basestring
@ -29,7 +27,7 @@ except NameError: # pragma no cover
_unicode = str
__author__ = 'Martin Blech'
__version__ = '0.9.2'
__version__ = '0.12.0'
__license__ = 'MIT'
@ -50,10 +48,11 @@ class _DictSAXHandler(object):
dict_constructor=OrderedDict,
strip_whitespace=True,
namespace_separator=':',
namespaces=None):
namespaces=None,
force_list=None):
self.path = []
self.stack = []
self.data = None
self.data = []
self.item = None
self.item_depth = item_depth
self.xml_attribs = xml_attribs
@ -67,6 +66,8 @@ class _DictSAXHandler(object):
self.strip_whitespace = strip_whitespace
self.namespace_separator = namespace_separator
self.namespaces = namespaces
self.namespace_declarations = OrderedDict()
self.force_list = force_list
def _build_name(self, full_name):
if not self.namespaces:
@ -86,34 +87,51 @@ class _DictSAXHandler(object):
return attrs
return self.dict_constructor(zip(attrs[0::2], attrs[1::2]))
def startNamespaceDecl(self, prefix, uri):
self.namespace_declarations[prefix or ''] = uri
def startElement(self, full_name, attrs):
name = self._build_name(full_name)
attrs = self._attrs_to_dict(attrs)
if attrs and self.namespace_declarations:
attrs['xmlns'] = self.namespace_declarations
self.namespace_declarations = OrderedDict()
self.path.append((name, attrs or None))
if len(self.path) > self.item_depth:
self.stack.append((self.item, self.data))
if self.xml_attribs:
attrs = self.dict_constructor(
(self.attr_prefix+self._build_name(key), value)
for (key, value) in attrs.items())
attr_entries = []
for key, value in attrs.items():
key = self.attr_prefix+self._build_name(key)
if self.postprocessor:
entry = self.postprocessor(self.path, key, value)
else:
entry = (key, value)
if entry:
attr_entries.append(entry)
attrs = self.dict_constructor(attr_entries)
else:
attrs = None
self.item = attrs or None
self.data = None
self.data = []
def endElement(self, full_name):
name = self._build_name(full_name)
if len(self.path) == self.item_depth:
item = self.item
if item is None:
item = self.data
item = (None if not self.data
else self.cdata_separator.join(self.data))
should_continue = self.item_callback(self.path, item)
if not should_continue:
raise ParsingInterrupted()
if len(self.stack):
item, data = self.item, self.data
data = (None if not self.data
else self.cdata_separator.join(self.data))
item = self.item
self.item, self.data = self.stack.pop()
if self.strip_whitespace and data is not None:
if self.strip_whitespace and data:
data = data.strip() or None
if data and self.force_cdata and item is None:
item = self.dict_constructor()
@ -124,14 +142,15 @@ class _DictSAXHandler(object):
else:
self.item = self.push_data(self.item, name, data)
else:
self.item = self.data = None
self.item = None
self.data = []
self.path.pop()
def characters(self, data):
if not self.data:
self.data = data
self.data = [data]
else:
self.data += self.cdata_separator + data
self.data.append(data)
def push_data(self, item, key, data):
if self.postprocessor is not None:
@ -148,12 +167,25 @@ class _DictSAXHandler(object):
else:
item[key] = [value, data]
except KeyError:
if self._should_force_list(key, data):
item[key] = [data]
else:
item[key] = data
return item
def _should_force_list(self, key, value):
if not self.force_list:
return False
if isinstance(self.force_list, bool):
return self.force_list
try:
return key in self.force_list
except TypeError:
return self.force_list(self.path[:-1], key, value)
def parse(xml_input, encoding=None, expat=expat, process_namespaces=False,
namespace_separator=':', **kwargs):
namespace_separator=':', disable_entities=True, **kwargs):
"""Parse the given XML input and convert it into a dictionary.
`xml_input` can either be a `string` or a file-like object.
@ -189,7 +221,7 @@ def parse(xml_input, encoding=None, expat=expat, process_namespaces=False,
Streaming example::
>>> def handle(path, item):
... print 'path:%s item:%s' % (path, item)
... print('path:%s item:%s' % (path, item))
... return True
...
>>> xmltodict.parse(\"\"\"
@ -220,6 +252,41 @@ def parse(xml_input, encoding=None, expat=expat, process_namespaces=False,
>>> xmltodict.parse('<a>hello</a>', expat=defusedexpat.pyexpat)
OrderedDict([(u'a', u'hello')])
You can use the force_list argument to force lists to be created even
when there is only a single child of a given level of hierarchy. The
force_list argument is a tuple of keys. If the key for a given level
of hierarchy is in the force_list argument, that level of hierarchy
will have a list as a child (even if there is only one sub-element).
The index_keys operation takes precendence over this. This is applied
after any user-supplied postprocessor has already run.
For example, given this input:
<servers>
<server>
<name>host1</name>
<os>Linux</os>
<interfaces>
<interface>
<name>em0</name>
<ip_address>10.0.0.1</ip_address>
</interface>
</interfaces>
</server>
</servers>
If called with force_list=('interface',), it will produce
this dictionary:
{'servers':
{'server':
{'name': 'host1',
'os': 'Linux'},
'interfaces':
{'interface':
[ {'name': 'em0', 'ip_address': '10.0.0.1' } ] } } }
`force_list` can also be a callable that receives `path`, `key` and
`value`. This is helpful in cases where the logic that decides whether
a list should be forced is more complex.
"""
handler = _DictSAXHandler(namespace_separator=namespace_separator,
**kwargs)
@ -238,17 +305,44 @@ def parse(xml_input, encoding=None, expat=expat, process_namespaces=False,
except AttributeError:
# Jython's expat does not support ordered_attributes
pass
parser.StartNamespaceDeclHandler = handler.startNamespaceDecl
parser.StartElementHandler = handler.startElement
parser.EndElementHandler = handler.endElement
parser.CharacterDataHandler = handler.characters
parser.buffer_text = True
if disable_entities:
try:
# Attempt to disable DTD in Jython's expat parser (Xerces-J).
feature = "http://apache.org/xml/features/disallow-doctype-decl"
parser._reader.setFeature(feature, True)
except AttributeError:
# For CPython / expat parser.
# Anything not handled ends up here and entities aren't expanded.
parser.DefaultHandler = lambda x: None
# Expects an integer return; zero means failure -> expat.ExpatError.
parser.ExternalEntityRefHandler = lambda *x: 1
if hasattr(xml_input, 'read'):
parser.ParseFile(xml_input)
except (TypeError, AttributeError):
else:
parser.Parse(xml_input, True)
return handler.item
def _process_namespace(name, namespaces, ns_sep=':', attr_prefix='@'):
if not namespaces:
return name
try:
ns, name = name.rsplit(ns_sep, 1)
except ValueError:
pass
else:
ns_res = namespaces.get(ns.strip(attr_prefix))
name = '{}{}{}{}'.format(
attr_prefix if ns.startswith(attr_prefix) else '',
ns_res, ns_sep, name) if ns_res else name
return name
def _emit(key, value, content_handler,
attr_prefix='@',
cdata_key='#text',
@ -257,7 +351,10 @@ def _emit(key, value, content_handler,
pretty=False,
newl='\n',
indent='\t',
namespace_separator=':',
namespaces=None,
full_document=True):
key = _process_namespace(key, namespaces, namespace_separator, attr_prefix)
if preprocessor is not None:
result = preprocessor(key, value)
if result is None:
@ -272,6 +369,11 @@ def _emit(key, value, content_handler,
raise ValueError('document with multiple roots')
if v is None:
v = OrderedDict()
elif isinstance(v, bool):
if v:
v = _unicode('true')
else:
v = _unicode('false')
elif not isinstance(v, dict):
v = _unicode(v)
if isinstance(v, _basestring):
@ -284,6 +386,15 @@ def _emit(key, value, content_handler,
cdata = iv
continue
if ik.startswith(attr_prefix):
ik = _process_namespace(ik, namespaces, namespace_separator,
attr_prefix)
if ik == '@xmlns' and isinstance(iv, dict):
for k, v in iv.items():
attr = 'xmlns{}'.format(':{}'.format(k) if k else '')
attrs[attr] = _unicode(v)
continue
if not isinstance(iv, _unicode):
iv = _unicode(iv)
attrs[ik[len(attr_prefix):]] = iv
continue
children.append((ik, iv))
@ -295,7 +406,8 @@ def _emit(key, value, content_handler,
for child_key, child_value in children:
_emit(child_key, child_value, content_handler,
attr_prefix, cdata_key, depth+1, preprocessor,
pretty, newl, indent)
pretty, newl, indent, namespaces=namespaces,
namespace_separator=namespace_separator)
if cdata is not None:
content_handler.characters(cdata)
if pretty and children:
@ -306,6 +418,7 @@ def _emit(key, value, content_handler,
def unparse(input_dict, output=None, encoding='utf-8', full_document=True,
short_empty_elements=False,
**kwargs):
"""Emit an XML document for the given `input_dict` (reverse of `parse`).
@ -327,6 +440,9 @@ def unparse(input_dict, output=None, encoding='utf-8', full_document=True,
if output is None:
output = StringIO()
must_return = True
if short_empty_elements:
content_handler = XMLGenerator(output, encoding, True)
else:
content_handler = XMLGenerator(output, encoding)
if full_document:
content_handler.startDocument()
@ -343,19 +459,26 @@ def unparse(input_dict, output=None, encoding='utf-8', full_document=True,
pass
return value
if __name__ == '__main__': # pragma: no cover
import sys
import marshal
try:
stdin = sys.stdin.buffer
stdout = sys.stdout.buffer
except AttributeError:
stdin = sys.stdin
stdout = sys.stdout
(item_depth,) = sys.argv[1:]
item_depth = int(item_depth)
def handle_item(path, item):
marshal.dump((path, item), sys.stdout)
marshal.dump((path, item), stdout)
return True
try:
root = parse(sys.stdin,
root = parse(stdin,
item_depth=item_depth,
item_callback=handle_item,
dict_constructor=dict)