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Don't crash when an executable is not found

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This commit is contained in:
Anthony Sottile 2016-05-20 13:22:13 -07:00
parent da7e85c851
commit 5a6b6e81e9
5 changed files with 37 additions and 13 deletions
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25
pre_commit/util.py
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@ -181,23 +181,26 @@ def cmd_output(*cmd, **kwargs):
for key, value in kwargs.pop('env', {}).items()
) or None
cmd = parse_shebang.normalize_cmd(cmd)
popen_kwargs.update(kwargs)
proc = __popen(cmd, **popen_kwargs)
stdout, stderr = proc.communicate()
if encoding is not None and stdout is not None:
stdout = stdout.decode(encoding)
if encoding is not None and stderr is not None:
stderr = stderr.decode(encoding)
returncode = proc.returncode
try:
cmd = parse_shebang.normalize_cmd(cmd)
except parse_shebang.ExecutableNotFoundError as e:
returncode, stdout, stderr = (-1, e.args[0].encode('UTF-8'), b'')
else:
popen_kwargs.update(kwargs)
proc = __popen(cmd, **popen_kwargs)
stdout, stderr = proc.communicate()
if encoding is not None and stdout is not None:
stdout = stdout.decode(encoding)
if encoding is not None and stderr is not None:
stderr = stderr.decode(encoding)
returncode = proc.returncode
if retcode is not None and retcode != returncode:
raise CalledProcessError(
returncode, cmd, retcode, output=(stdout, stderr),
)
return proc.returncode, stdout, stderr
return returncode, stdout, stderr
def rmtree(path):