1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
#!/usr/bin/env python3
# Copyright 2023 David Robillard <d@drobilla.net>
# SPDX-License-Identifier: ISC
"""Run a file through a formatter and error if the output differs."""
import argparse
import difflib
import os
import shlex
import subprocess
import sys
DEVNULL = subprocess.DEVNULL
PIPE = subprocess.PIPE
def run_formatter(command, good_path):
"""Run the formatter and compare the output."""
with subprocess.Popen(
command, encoding="utf-8", stderr=DEVNULL, stdout=PIPE
) as proc:
out = list(proc.stdout)
with open(good_path, "r", encoding="utf-8") as good:
good_lines = list(good)
same = True
for line in difflib.unified_diff(good_lines, out, fromfile=good_path):
sys.stderr.write(line)
same = False
return same
def main():
"""Run the command line tool."""
parser = argparse.ArgumentParser(
usage="%(prog)s [OPTION]... INPUT TOOL [ARG]...", description=__doc__
)
parser.add_argument("--wrapper", default="", help="executable wrapper")
parser.add_argument("input", help="file to check")
parser.add_argument("tool", help="formatter executable")
parser.add_argument("arg", nargs=argparse.REMAINDER, help="tool argument")
args = parser.parse_args(sys.argv[1:])
path = os.path.normpath(args.input)
command = shlex.split(args.wrapper) + [args.tool] + args.arg + [path]
return 0 if run_formatter(command, args.input) else 1
if __name__ == "__main__":
sys.exit(main())
|
