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# Copyright (c) 2011-2013 Simplistix Ltd, 2015 Chris Withers
# See license.txt for license details.
# This module contains bits and pieces to achieve compatibility across all the
# versions of python supported.
import doctest
import manuel
import re
import sys
import textwrap
from manuel.codeblock import (
CODEBLOCK_START,
CODEBLOCK_END,
CodeBlock,
execute_code_block,
)
# version markers
from ..compat import PY2 as py_2
py_33_plus = sys.version_info[:2] >= (3, 3)
py_34_plus = sys.version_info[:2] >= (3, 4)
py_35_plus = sys.version_info[:2] >= (3, 5)
# Python 2.7 compatibility stuff
BYTE_LITERALS = re.compile("^b('.*')$", re.MULTILINE)
def find_code_blocks(document):
for region in document.find_regions(CODEBLOCK_START, CODEBLOCK_END):
start_end = CODEBLOCK_START.search(region.source).end()
source = textwrap.dedent(region.source[start_end:])
if py_2:
source = BYTE_LITERALS.sub('\\1', source)
source = 'from __future__ import print_function\n' + source
source_location = '%s:%d' % (document.location, region.lineno)
code = compile(source, source_location, 'exec', 0, True)
document.claim_region(region)
region.parsed = CodeBlock(code, source)
class Manuel(manuel.Manuel):
def __init__(self):
manuel.Manuel.__init__(self, [find_code_blocks], [execute_code_block])
if py_2:
class DocTestChecker(doctest.OutputChecker):
def check_output(self, want, got, optionflags):
want = BYTE_LITERALS.sub('\\1', want)
return doctest.OutputChecker.check_output(
self, want, got, optionflags
)
else:
DocTestChecker = doctest.OutputChecker
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