gstreamer/hooks/pre-commit-python.hook

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#!/usr/bin/env python3
import os
import subprocess
import sys
import tempfile
NOT_PEP8_COMPLIANT_MESSAGE_PRE = \
"Your code is not fully pep8 compliant and contains"\
" the following coding style issues:\n\n"
NOT_PEP8_COMPLIANT_MESSAGE_POST = \
"Please fix these errors and commit again, you can do so "\
"from the root directory automatically like this, assuming the whole "\
"file is to be commited:"
NO_PEP8_MESSAGE = \
"You should install the pep8 style checker to be able"\
" to commit in this repo.\nIt allows us to garantee that "\
"anything that is commited respects the pep8 coding style "\
"standard.\nYou can install it:\n"\
" * on ubuntu, debian: $sudo apt-get install pep8 \n"\
" * on fedora: #yum install python-pep8 \n"\
" * on arch: #pacman -S pep8-python3 \n"\
" * or add the official pep8 from http://www.python.org/dev/peps/pep-0008/"\
" in your $PATH"
def system(*args, **kwargs):
kwargs.setdefault('stdout', subprocess.PIPE)
proc = subprocess.Popen(args, **kwargs)
out, err = proc.communicate()
if type(out) == bytes:
out = out.decode()
return out
def copy_files_to_tmp_dir(files):
tempdir = tempfile.mkdtemp()
for name in files:
filename = os.path.join(tempdir, name)
filepath = os.path.dirname(filename)
if not os.path.exists(filepath):
os.makedirs(filepath)
with open(filename, 'w') as f:
system('git', 'show', ':' + name, stdout=f)
return tempdir
def main():
modified_files = system('git', 'diff-index', '--cached',
'--name-only', 'HEAD', '--diff-filter=ACMR').split("\n")[:-1]
non_compliant_files = []
output_message = None
for modified_file in modified_files:
try:
if not modified_file.endswith(".py"):
continue
pep8_errors = system('pep8', '--repeat', '--ignore', 'E501,E128', modified_file)
if pep8_errors:
if output_message is None:
output_message = NOT_PEP8_COMPLIANT_MESSAGE_PRE
output_message += pep8_errors
non_compliant_files.append(modified_file)
except OSError:
output_message = NO_PEP8_MESSAGE
break
if output_message:
print(output_message)
if non_compliant_files:
print(NOT_PEP8_COMPLIANT_MESSAGE_POST)
for non_compliant_file in non_compliant_files:
print("autopep8 -i ", non_compliant_file, "; git add ",
non_compliant_file)
print("git commit")
sys.exit(1)
if __name__ == '__main__':
main()