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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 2017 by David Lamparter, placed in public domain
import sys, re, subprocess, os
# find all DEFUNs
defun_re = re.compile(
r'^((DEF(UN(|_ATTR|_CMD_(ELEMENT|FUNC_(DECL|TEXT))|_DEPRECATED|_NOSH|_HIDDEN|SH(|_ATTR|_DEPRECATED|_HIDDEN))?|PY|PY_ATTR|PY_HIDDEN)|ALIAS)\s*\(.*?)^(?=\s*\{)',
re.M | re.S)
define_re = re.compile(
r'((^#\s*define[^\n]+[^\\]\n)+)',
re.M | re.S)
# find clang-format control that we just inserted
clean_re = re.compile(
r'^.*/\* \$FRR indent\$ \*/\s*\n\s*/\* clang-format (on|off) \*/\s*\n',
re.M)
def wrap_file(fn):
with open(fn, 'r') as fd:
text = fd.read()
repl = r'/* $FRR indent$ */\n/* clang-format off */\n' + \
r'\1' + \
r'/* $FRR indent$ */\n/* clang-format on */\n'
# around each DEFUN, insert an indent-on/off comment
text = defun_re.sub(repl, text)
text = define_re.sub(repl, text)
ci = subprocess.Popen(['clang-format'], stdin = subprocess.PIPE, stdout = subprocess.PIPE)
stdout, ign = ci.communicate(text)
ci.wait()
if ci.returncode != 0:
raise IOError('clang-format returned %d' % (ci.returncode))
# remove the bits we inserted above
final = clean_re.sub('', stdout)
tmpname = fn + '.indent'
with open(tmpname, 'w') as ofd:
ofd.write(final)
os.rename(tmpname, fn)
if __name__ == '__main__':
for fn in sys.argv[1:]:
wrap_file(fn)
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