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import os
import subprocess
VERSION_PY_PATH = 'gbp/version.py'
def _parse_changelog():
"""Get version from debian changelog and write it to gbp/version.py"""
popen = subprocess.Popen('dpkg-parsechangelog', stdout=subprocess.PIPE)
out, ret = popen.communicate()
for line in out.decode('utf-8').split('\n'):
if line.startswith('Version:'):
version = line.split(' ')[1].strip()
return version
raise ValueError('Could not parse version from debian/changelog')
def _save_version_py(version):
with open(VERSION_PY_PATH, 'w') as f:
f.write('"The current gbp version number"\n')
f.write('gbp_version = "%s"\n' % version)
def _load_version():
with open(VERSION_PY_PATH, 'r') as f:
version_py = f.read()
version_py_globals = {}
exec(version_py, version_py_globals)
return version_py_globals['gbp_version']
def parse_and_fetch_version():
if os.path.exists('debian/changelog'):
version = _parse_changelog()
_save_version_py(version)
# we could return with the version here, but instead we check that
# the file has been properly written and it can be loaded back
version = _load_version()
return version
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