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util.py
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24 lines (18 loc) · 740 Bytes
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import subprocess
from typing import Any
from typing import Optional
from typing import Set
class CalledProcessError(RuntimeError):
pass
def added_files() -> Set[str]:
cmd = ('git', 'diff', '--staged', '--name-only', '--diff-filter=A')
return set(cmd_output(*cmd).splitlines())
def cmd_output(*cmd: str, retcode: Optional[int] = 0, **kwargs: Any) -> str:
kwargs.setdefault('stdout', subprocess.PIPE)
kwargs.setdefault('stderr', subprocess.PIPE)
proc = subprocess.Popen(cmd, **kwargs)
stdout, stderr = proc.communicate()
stdout = stdout.decode()
if retcode is not None and proc.returncode != retcode:
raise CalledProcessError(cmd, retcode, proc.returncode, stdout, stderr)
return stdout