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# inspired by https://gist.github.com/sente/1083506
# The MIT License (MIT)
# Copyright (c) 2016 Stuart Powers
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
import re
def pretty_print(xmlstr, indent=' ', line_break='\n'):
# python2 doesn't have nonlocal
current = [0]
def indent_line(line):
addition = 0
if re.match(r'.+</\w[^>]*>$', line):
# single line text element, don't change indentation
addition = 0
elif re.match(r'^</\w', line) and current[0] > 0:
# end of element and have padding, decrement indentation by one
current[0] -= 1
elif re.match(r'^<\w[^>]*[^/]>.*$', line):
# start of element, increment indentation by one
addition = 1
else:
# single line element, don't change indentation
addition = 0
# update and store current indentation in outer function
current[0] += addition
# pad the line and return
return (indent * (current[0] - addition)) + line
# split the document into lines, indent each line, then rejoin lines
return line_break.join(
map(
indent_line,
re.sub('(>)(<)(/*)', r'\1\n\2\3', xmlstr).split('\n')
)
)
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