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from __future__ import annotations
import argparse
import subprocess
from collections.abc import Sequence
from pre_commit.parse_shebang import normalize_cmd
def add_parsers(parser: argparse.ArgumentParser) -> None:
subparsers = parser.add_subparsers(dest='tool')
cd_parser = subparsers.add_parser(
'cd', help='cd to a subdir and run the command',
)
cd_parser.add_argument('subdir')
cd_parser.add_argument('cmd', nargs=argparse.REMAINDER)
ignore_exit_code_parser = subparsers.add_parser(
'ignore-exit-code', help='run the command but ignore the exit code',
)
ignore_exit_code_parser.add_argument('cmd', nargs=argparse.REMAINDER)
n1_parser = subparsers.add_parser(
'n1', help='run the command once per filename',
)
n1_parser.add_argument('cmd', nargs=argparse.REMAINDER)
def _cmd_filenames(cmd: tuple[str, ...]) -> tuple[
tuple[str, ...],
tuple[str, ...],
]:
for idx, val in enumerate(reversed(cmd)):
if val == '--':
split = len(cmd) - idx
break
else:
raise SystemExit('hazmat entry must end with `--`')
return cmd[:split - 1], cmd[split:]
def cd(subdir: str, cmd: tuple[str, ...]) -> int:
cmd, filenames = _cmd_filenames(cmd)
prefix = f'{subdir}/'
new_filenames = []
for filename in filenames:
if not filename.startswith(prefix):
raise SystemExit(f'unexpected file without {prefix=}: {filename}')
else:
new_filenames.append(filename.removeprefix(prefix))
cmd = normalize_cmd(cmd)
return subprocess.call((*cmd, *new_filenames), cwd=subdir)
def ignore_exit_code(cmd: tuple[str, ...]) -> int:
cmd = normalize_cmd(cmd)
subprocess.call(cmd)
return 0
def n1(cmd: tuple[str, ...]) -> int:
cmd, filenames = _cmd_filenames(cmd)
cmd = normalize_cmd(cmd)
ret = 0
for filename in filenames:
ret |= subprocess.call((*cmd, filename))
return ret
def impl(args: argparse.Namespace) -> int:
args.cmd = tuple(args.cmd)
if args.tool == 'cd':
return cd(args.subdir, args.cmd)
elif args.tool == 'ignore-exit-code':
return ignore_exit_code(args.cmd)
elif args.tool == 'n1':
return n1(args.cmd)
else:
raise NotImplementedError(f'unexpected tool: {args.tool}')
def main(argv: Sequence[str] | None = None) -> int:
parser = argparse.ArgumentParser()
add_parsers(parser)
args = parser.parse_args(argv)
return impl(args)
if __name__ == '__main__':
raise SystemExit(main())