Source code for openpyxl.xml.functions

from __future__ import absolute_import
# Copyright (c) 2010-2017 openpyxl

"""
XML compatability functions
"""

# Python stdlib imports
import re
from functools import partial
# compatibility

# package imports
from openpyxl import LXML

if LXML is True:
    from lxml.etree import (
    Element,
    ElementTree,
    SubElement,
    fromstring,
    tostring,
    register_namespace,
    QName,
    xmlfile,
    XMLParser,
    )
    from xml.etree.cElementTree import iterparse
    # do not resolve entities
    safe_parser = XMLParser(resolve_entities=False)
    fromstring = partial(fromstring, parser=safe_parser)
else:
    try:
        from xml.etree.cElementTree import (
        ElementTree,
        Element,
        SubElement,
        fromstring,
        tostring,
        iterparse,
        QName
        )
    except ImportError:
        from xml.etree.ElementTree import (
        ElementTree,
        Element,
        SubElement,
        fromstring,
        tostring,
        iterparse,
        QName
        )
    from .namespace import register_namespace
    from et_xmlfile import xmlfile


from openpyxl.xml.constants import (
    CHART_NS,
    DRAWING_NS,
    SHEET_DRAWING_NS,
    CHART_DRAWING_NS,
    SHEET_MAIN_NS,
    REL_NS,
    VTYPES_NS,
    COREPROPS_NS,
    DCTERMS_NS,
    DCTERMS_PREFIX
)

# allow LXML interface
_iterparse = iterparse
[docs]def safe_iterparse(source, *args, **kw): return _iterparse(source)
iterparse = safe_iterparse register_namespace(DCTERMS_PREFIX, DCTERMS_NS) register_namespace('dcmitype', 'http://purl.org/dc/dcmitype/') register_namespace('cp', COREPROPS_NS) register_namespace('c', CHART_NS) register_namespace('a', DRAWING_NS) register_namespace('s', SHEET_MAIN_NS) register_namespace('r', REL_NS) register_namespace('vt', VTYPES_NS) register_namespace('xdr', SHEET_DRAWING_NS) register_namespace('cdr', CHART_DRAWING_NS) tostring = partial(tostring, encoding="utf-8")
[docs]def safe_iterator(node, tag=None): """Return an iterator that is compatible with Python 2.6""" if node is None: return [] if hasattr(node, "iter"): return node.iter(tag) else: return node.getiterator(tag)
NS_REGEX = re.compile("({(?P<namespace>.*)})?(?P<localname>.*)")
[docs]def localname(node): m = NS_REGEX.match(node.tag) return m.group('localname')