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- from pathlib import PurePath
- from typing import Iterable, Union, Optional, Iterator, NoReturn, Sequence, Mapping
- from typing_extensions import Protocol
- import subprocess
-
- from .util import Pathish
-
- CommandLineArg = Union[str, Pathish, int, float]
- CommandLineArg1 = Union[CommandLineArg, Iterable[CommandLineArg]]
- CommandLineArg2 = Union[CommandLineArg1, Iterable[CommandLineArg1]]
- CommandLineArg3 = Union[CommandLineArg2, Iterable[CommandLineArg2]]
- CommandLineArg4 = Union[CommandLineArg3, Iterable[CommandLineArg3]]
-
-
- class CommandLine(Protocol):
- def __iter__(self) -> Iterator[Union['CommandLine', CommandLineArg]]:
- pass
-
-
- # CommandLine = Union[CommandLineArg4, Iterable[CommandLineArg4]]
-
-
- class ProcessResult(Protocol):
- args: Sequence[str]
- returncode: int
- stdout: bytes
- stderr: bytes
-
-
- def flatten_cmd(cmd: CommandLine) -> Iterable[str]:
- if isinstance(cmd, (str, PurePath)):
- yield str(cmd)
- elif isinstance(cmd, (int, float)):
- yield str(cmd)
- elif hasattr(cmd, '__iter__'):
- each = (flatten_cmd(arg) for arg in cmd) # type: ignore
- for item in each:
- yield from item
- else:
- assert False, f'Invalid command line element: {repr(cmd)}'
-
-
- def run(*cmd: CommandLine,
- cwd: Optional[Pathish] = None,
- check: bool = False,
- env: Optional[Mapping[str, str]] = None) -> ProcessResult:
- command = list(flatten_cmd(cmd))
- res = subprocess.run(command, cwd=cwd, check=False, env=env)
- if res.returncode and check:
- raise_error(res)
- return res
-
-
- def raise_error(proc: ProcessResult) -> NoReturn:
- raise subprocess.CalledProcessError(proc.returncode, proc.args, output=proc.stdout, stderr=proc.stderr)
-
-
- def check_run(*cmd: CommandLine,
- cwd: Optional[Pathish] = None,
- env: Optional[Mapping[str, str]] = None) -> ProcessResult:
- return run(cmd, cwd=cwd, check=True, env=env)
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