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#!/usr/bin/env python3
from __future__ import print_function
import time
import sys
import re
from contextlib import contextmanager
from os import system, path, makedirs, getenv
from subprocess import check_output, STDOUT, CalledProcessError
from collections import defaultdict
import shutil
from termcolor import colored
STABLE_VERSION = getenv('WEBOOB_BACKPORT_STABLE', '1.3')
DEVEL_BRANCH = getenv('WEBOOB_BACKPORT_DEVEL', 'master')
@contextmanager
def log(message, success='done'):
print('%s... ' % message, end='', flush=True)
start = time.time()
try:
yield
except KeyboardInterrupt:
print(colored('abort', 'red'))
sys.exit(1)
except Exception as e:
print(colored('fail: %s' % e, 'red'))
raise
else:
print('%s %s' % (colored(success, 'green'),
colored('(%.2fs)' % (time.time() - start), 'blue')))
def create_compat_dir(name):
if not path.exists(name):
makedirs(name)
with open(path.join(name, '__init__.py'), 'w'):
pass
MANUAL_PORTS = [
]
MANUAL_PORT_DIR = path.join(path.dirname(__file__), 'stable_backport_data')
class Error(object):
def __init__(self, filename, linenum, message):
self.filename = filename
self.linenum = linenum
self.message = message
self.compat_dir = path.join(path.dirname(filename), 'compat')
def __repr__(self):
return '<%s filename=%r linenum=%s message=%r>' % (type(self).__name__, self.filename, self.linenum, self.message)
def reimport_module(self, module):
# not a weboob module, probably a false positive.
if not module.startswith('weboob'):
return
dirname = module.replace('.', '/')
filename = dirname + '.py'
new_module = module.replace('.', '_')
target = path.join(self.compat_dir, '%s.py' % new_module)
base_module = '.'.join(module.split('.')[:-1])
try:
r = check_output('git show %s:%s' % (DEVEL_BRANCH, filename), shell=True, stderr=STDOUT).decode('utf-8')
except CalledProcessError:
# this file does not exist, perhaps a directory.
return
if module in MANUAL_PORTS:
shutil.copyfile(path.join(MANUAL_PORT_DIR, path.basename(target)), target)
else:
# Copy module from devel to a compat/ sub-module
with open(target, 'w') as fp:
for line in r.split('\n'):
# Replace relative imports to absolute ones
m = re.match(r'^from (\.\.?)([\w_\.]+) import (.*)', line)
if m:
if m.group(1) == '..':
base_module = '.'.join(base_module.split('.')[:-1])
fp.write('from %s.%s import %s\n' % (base_module, m.group(2), m.group(3)))
continue
# Inherit all classes by previous ones, if they already existed.
m = re.match(r'^class (\w+)\(([\w,\s]+)\):(.*)', line)
if m and path.exists(filename) and system('grep "^class %s" %s >/dev/null' % (m.group(1), filename)) == 0:
symbol = m.group(1)
trailing = m.group(3)
fp.write('from %s import %s as _%s\n' % (module, symbol, symbol))
fp.write('class %s(_%s):%s\n' % (symbol, symbol, trailing))
continue
fp.write('%s\n' % line)
# Particular case, in devel some imports have been added to
# weboob/browser/__init__.py
system(r'sed -i -e "s/from weboob.browser import/from weboob.browser.browsers import/g" %s'
% self.filename)
# Replace import to this module by a relative import to the copy in
# compat/
system(r'sed -i -e "%ss/from \([A-Za-z0-9_\.]\+\) import \(.*\)/from .compat.%s import \2/g" %s'
% (self.linenum, new_module, self.filename))
def remove_block(name, start):
lines = []
with open(name, 'r') as fd:
it = iter(fd)
for n in range(start - 1):
lines.append(next(it))
line = next(it)
level = len(re.match(r'^( *)', line).group(1))
for line in it:
if not line.strip():
continue
new = len(re.match(r'^( *)', line).group(1))
if new <= level:
lines.append(line)
break
lines.extend(it)
with open(name, 'w') as fd:
fd.write(''.join(lines))
class NoNameInModuleError(Error):
def fixup(self):
m = re.match(r"No name '(\w+)' in module '([\w\.]+)'", self.message)
module = m.group(2)
self.reimport_module(module)
class ImportErrorError(Error):
def fixup(self):
m = re.match(r"Unable to import '([\w\.]+)'", self.message)
module = m.group(1)
self.reimport_module(module)
def replace_all(expr, dest):
system(r"""for file in $(git ls-files modules | grep '\.py$');
do
sed -i -e "s/""" + expr + '/' + dest + """/g" $file
done""")
def output_lines(cmd):
return check_output(cmd, shell=True, stderr=STDOUT).decode('utf-8').rstrip().split('\n')
class StableBackport(object):
errors = {'E0611': NoNameInModuleError,
'E0401': ImportErrorError,
}
def main(self):
with log('Removing previous compat files'):
system('git rm -q "modules/*/compat/*.py"')
with log('Copying last version of modules from devel'):
system('git checkout --theirs %s modules' % DEVEL_BRANCH)
with log('Replacing version number'):
replace_all(r"""^\(\s*\)\(VERSION\)\( *\)=\( *\)[\"'][0-9]\+\..\+[\"']\(,\?\)$""",
r"""\1\2\3=\4'""" + STABLE_VERSION + r"""'\5""")
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with log('Removing staling data'):
system('tools/stale_pyc.py')
system('find modules -type d -empty -delete')
system('git add -u')
with log('Lookup modules errors'):
r = check_output("pylint modules -f parseable -E -d all -e no-name-in-module,import-error; exit 0", shell=True, stderr=STDOUT).decode('utf-8')
dirnames = defaultdict(list)
for line in r.split('\n'):
m = re.match(r'([\w\./]+):(\d+): \[(\w+)[^\]]+\] (.*)', line)
if not m:
continue
filename = m.group(1)
linenum = m.group(2)
error = m.group(3)
msg = m.group(4)
dirnames[path.dirname(filename)].append(self.errors[error](filename, linenum, msg))
for dirname, errors in sorted(dirnames.items()):
with log('Fixing up %s errors in %s' % (colored(str(len(errors)), 'magenta'),
colored(dirname, 'yellow'))):
compat_dirname = path.join(dirname, 'compat')
create_compat_dir(compat_dirname)
for error in errors:
error.fixup()
system('git add %s' % compat_dirname)
if __name__ == '__main__':
StableBackport().main()