def _black_roundtrip(path):
import black
with open(path, "r", encoding='utf8') as f:
contents = f.read()
output = _run_black(contents)
again = _run_black(output)
assert output == again, ("Black not idempotent on file %s" % path)
# Now we decode both versions with the traditional codec and compare.
orig_pyxl = pyxl_transform_string(contents, invertible=False)
new_pyxl = pyxl_transform_string(output, invertible=False)
black.assert_equivalent(orig_pyxl, new_pyxl)
def _expect_failure(file_name):
path = os.path.join(error_cases_path, file_name)
try:
with open(path, 'r') as f:
print(pyxl_transform_string(f.read()))
assert False, "successfully decoded file %r" % file_name
except (PyxlParseError, ParseError):
pass
def _run_black(contents):
import black
# Run black on the file. We manually encode and decode ourselves
# to avoid needing to make black find the right codec.
mode = black.FileMode()
return pyxl_invert_string(
black.format_str(pyxl_transform_string(contents, invertible=True),
mode=mode))
def _roundtrip(file_name):
path = os.path.join(dir_path, file_name)
with open(path, "r", encoding='utf8') as f:
contents = f.read()
depyxled = pyxl_transform_string(contents, invertible=True)
# Make sure the transformed string parses
try:
ast.parse(depyxled)
except Exception as e:
raise Exception("Parse error in file %s" % file_name)
# Verify that it round trips without change
assert contents == pyxl_invert_string(depyxled), (
"Could not round-trip file %s" % file_name)
#!/usr/bin/env python
import sys
from pyxl.codec.transform import pyxl_invert_string, pyxl_transform_string
if __name__ == '__main__':
invert = invertible = False
if sys.argv[1] == '-i':
invertible = True
fname = sys.argv[2]
elif sys.argv[1] == '-r':
invert = True
fname = sys.argv[2]
else:
fname = sys.argv[1]
with open(fname, 'r') as f:
contents = f.read()
if invert:
print(pyxl_invert_string(contents), end='')
else:
print(pyxl_transform_string(contents, invertible), end='')