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#!/usr/bin/env python3
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import os
from difflib import unified_diff
from pathlib import Path
from subprocess import PIPE, Popen
EXCLUDELIST = Path("solenv/clang-format/excludelist")
THRESHOLD = os.getenv("CLANG_THRESHOLD", 5)
CLANG_BINARY = Path(os.getenv("CLANG_FORMAT", "/opt/lo/bin/clang-format"))
def calculate_diff_size(diff):
additions, removals = 0, 0
# ignore first 2 item in the sequence
# which are +++ and ---
for line in diff[2:]:
if line.startswith("+"):
additions += 1
elif line.startswith("-"):
removals += 1
return max((additions, removals))
def format_stream(path, *extra_args):
process = Popen(
[CLANG_BINARY, *extra_args], stdout=PIPE, stderr=PIPE, stdin=PIPE,
)
stdout, stderr = process.communicate(input=path.read_bytes())
if stderr:
print("<FAIL>", str(path))
print(stderr.decode())
print("<FAIL>")
exit(1)
stdout = stdout.decode()
return stdout
def main(*args):
if not CLANG_BINARY.exists():
print("Couldn't find clang-format on {!s}".format(CLANG_BINARY))
exit(1)
for path in EXCLUDELIST.read_text().splitlines():
path = Path(path)
if not path.exists():
continue
original = path.read_text()
new = format_stream(path, *args)
originalsize = len(original.splitlines())
diff = unified_diff(original.splitlines(), new.splitlines(), n=0)
diffsize = calculate_diff_size(tuple(diff))
if diffsize <= (originalsize * 5) // 100:
print(path, "(size: {}/{})".format(diffsize, originalsize))
if __name__ == "__main__":
import sys
main(*sys.argv[1:])
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