/usr/lib/python3/dist-packages/xlsxwriter/xmlwriter.py is in python3-xlsxwriter 0.7.3-1.
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#
# XMLwriter - A base class for XlsxWriter classes.
#
# Used in conjunction with XlsxWriter.
#
# Copyright 2013-2015, John McNamara, jmcnamara@cpan.org
#
# Standard packages.
import re
import codecs
# Standard packages in Python 2/3 compatibility mode.
from .compatibility import StringIO
class XMLwriter(object):
"""
Simple XML writer class.
"""
def __init__(self):
self.fh = None
self.escapes = re.compile('["&<>]')
self.internal_fh = False
def _set_filehandle(self, filehandle):
# Set the writer filehandle directly. Mainly for testing.
self.fh = filehandle
self.internal_fh = False
def _set_xml_writer(self, filename):
# Set the XML writer filehandle for the object.
if isinstance(filename, StringIO):
self.internal_fh = False
self.fh = filename
else:
self.internal_fh = True
self.fh = codecs.open(filename, 'w', 'utf-8')
def _xml_close(self):
# Close the XML filehandle if we created it.
if self.internal_fh:
self.fh.close()
def _xml_declaration(self):
# Write the XML declaration.
self.fh.write(
"""<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\n""")
def _xml_start_tag(self, tag, attributes=[]):
# Write an XML start tag with optional attributes.
for key, value in attributes:
value = self._escape_attributes(value)
tag += ' %s="%s"' % (key, value)
self.fh.write("<%s>" % tag)
def _xml_start_tag_unencoded(self, tag, attributes=[]):
# Write an XML start tag with optional, unencoded, attributes.
# This is a minor speed optimisation for elements that don't
# need encoding.
for key, value in attributes:
tag += ' %s="%s"' % (key, value)
self.fh.write("<%s>" % tag)
def _xml_end_tag(self, tag):
# Write an XML end tag.
self.fh.write("</%s>" % tag)
def _xml_empty_tag(self, tag, attributes=[]):
# Write an empty XML tag with optional attributes.
for key, value in attributes:
value = self._escape_attributes(value)
tag += ' %s="%s"' % (key, value)
self.fh.write("<%s/>" % tag)
def _xml_empty_tag_unencoded(self, tag, attributes=[]):
# Write an empty XML tag with optional, unencoded, attributes.
# This is a minor speed optimisation for elements that don't
# need encoding.
for key, value in attributes:
tag += ' %s="%s"' % (key, value)
self.fh.write("<%s/>" % tag)
def _xml_data_element(self, tag, data, attributes=[]):
# Write an XML element containing data with optional attributes.
end_tag = tag
for key, value in attributes:
value = self._escape_attributes(value)
tag += ' %s="%s"' % (key, value)
data = self._escape_data(data)
self.fh.write("<%s>%s</%s>" % (tag, data, end_tag))
def _xml_string_element(self, index, attributes=[]):
# Optimised tag writer for <c> cell string elements in the inner loop.
attr = ''
for key, value in attributes:
value = self._escape_attributes(value)
attr += ' %s="%s"' % (key, value)
self.fh.write("""<c%s t="s"><v>%d</v></c>""" % (attr, index))
def _xml_si_element(self, string, attributes=[]):
# Optimised tag writer for shared strings <si> elements.
attr = ''
for key, value in attributes:
value = self._escape_attributes(value)
attr += ' %s="%s"' % (key, value)
string = self._escape_data(string)
self.fh.write("""<si><t%s>%s</t></si>""" % (attr, string))
def _xml_rich_si_element(self, string):
# Optimised tag writer for shared strings <si> rich string elements.
self.fh.write("""<si>%s</si>""" % string)
def _xml_number_element(self, number, attributes=[]):
# Optimised tag writer for <c> cell number elements in the inner loop.
attr = ''
for key, value in attributes:
value = self._escape_attributes(value)
attr += ' %s="%s"' % (key, value)
self.fh.write("""<c%s><v>%.15g</v></c>""" % (attr, number))
def _xml_formula_element(self, formula, result, attributes=[]):
# Optimised tag writer for <c> cell formula elements in the inner loop.
attr = ''
for key, value in attributes:
value = self._escape_attributes(value)
attr += ' %s="%s"' % (key, value)
self.fh.write("""<c%s><f>%s</f><v>%s</v></c>"""
% (attr, self._escape_data(formula),
self._escape_data(result)))
def _xml_inline_string(self, string, preserve, attributes=[]):
# Optimised tag writer for inlineStr cell elements in the inner loop.
attr = ''
t_attr = ''
# Set the <t> attribute to preserve whitespace.
if preserve:
t_attr = ' xml:space="preserve"'
for key, value in attributes:
value = self._escape_attributes(value)
attr += ' %s="%s"' % (key, value)
string = self._escape_data(string)
self.fh.write("""<c%s t="inlineStr"><is><t%s>%s</t></is></c>""" %
(attr, t_attr, string))
def _xml_rich_inline_string(self, string, attributes=[]):
# Optimised tag writer for rich inlineStr in the inner loop.
attr = ''
for key, value in attributes:
value = self._escape_attributes(value)
attr += ' %s="%s"' % (key, value)
self.fh.write("""<c%s t="inlineStr"><is>%s</is></c>""" %
(attr, string))
def _escape_attributes(self, attribute):
# Escape XML characters in attributes.
try:
if not self.escapes.search(attribute):
return attribute
except TypeError:
return attribute
attribute = attribute.replace('&', '&')
attribute = attribute.replace('"', '"')
attribute = attribute.replace('<', '<')
attribute = attribute.replace('>', '>')
return attribute
def _escape_data(self, data):
# Escape XML characters in data sections of tags. Note, this
# is different from _escape_attributes() in that double quotes
# are not escaped by Excel.
try:
if not self.escapes.search(data):
return data
except TypeError:
return data
data = data.replace('&', '&')
data = data.replace('<', '<')
data = data.replace('>', '>')
return data
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