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# Copyright 2018 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import argparse
import subprocess
import itertools
import fnmatch
from pathlib import Path
from concurrent.futures import ThreadPoolExecutor
from ..environment import detect_clangformat
from ..compilers import lang_suffixes
import typing as T
def parse_pattern_file(fname: Path) -> T.List[str]:
patterns = []
try:
with fname.open(encoding='utf-8') as f:
for line in f:
pattern = line.strip()
if pattern and not pattern.startswith('#'):
patterns.append(pattern)
except FileNotFoundError:
pass
return patterns
def run_clang_format(exelist: T.List[str], fname: Path, check: bool) -> subprocess.CompletedProcess:
before = fname.stat().st_mtime
args = ['-style=file', str(fname)]
if check:
args = ['-i'] + args
ret = subprocess.run(exelist + args)
after = fname.stat().st_mtime
if before != after:
print('File reformatted: ', fname)
if check:
ret.returncode = 1
return ret
def clangformat(exelist: T.List[str], srcdir: Path, builddir: Path, check: bool) -> int:
patterns = parse_pattern_file(srcdir / '.clang-format-include')
if not patterns:
patterns = ['**/*']
globs = [srcdir.glob(p) for p in patterns]
patterns = parse_pattern_file(srcdir / '.clang-format-ignore')
ignore = [str(builddir / '*')]
ignore.extend([str(srcdir / p) for p in patterns])
suffixes = set(lang_suffixes['c']).union(set(lang_suffixes['cpp']))
suffixes.add('h')
suffixes = set([f'.{s}' for s in suffixes])
futures = []
returncode = 0
with ThreadPoolExecutor() as e:
for f in itertools.chain(*globs):
strf = str(f)
if f.is_dir() or f.suffix not in suffixes or \
any(fnmatch.fnmatch(strf, i) for i in ignore):
continue
futures.append(e.submit(run_clang_format, exelist, f, check))
returncode = max([x.result().returncode for x in futures])
return returncode
def run(args: T.List[str]) -> int:
parser = argparse.ArgumentParser()
parser.add_argument('--check', action='store_true')
parser.add_argument('sourcedir')
parser.add_argument('builddir')
options = parser.parse_args(args)
srcdir = Path(options.sourcedir)
builddir = Path(options.builddir)
exelist = detect_clangformat()
if not exelist:
print('Could not execute clang-format "%s"' % ' '.join(exelist))
return 1
return clangformat(exelist, srcdir, builddir, options.check)
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