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helpers.py
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52 lines (37 loc) · 1.47 KB
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from __future__ import unicode_literals
import pipes
def environment_dir(ENVIRONMENT_DIR, language_version):
if ENVIRONMENT_DIR is None:
return None
else:
return '{0}-{1}'.format(ENVIRONMENT_DIR, language_version)
def file_args_to_stdin(file_args):
return '\0'.join(list(file_args) + [''])
def run_hook(env, hook, file_args):
quoted_args = [pipes.quote(arg) for arg in hook['args']]
return env.run(
# Use -s 4000 (slightly less than posix mandated minimum)
# This is to prevent "xargs: ... Bad file number" on windows
' '.join(['xargs', '-0', '-s4000', hook['entry']] + quoted_args),
stdin=file_args_to_stdin(file_args),
retcode=None,
encoding=None,
)
class Environment(object):
def __init__(self, repo_cmd_runner, language_version):
self.repo_cmd_runner = repo_cmd_runner
self.language_version = language_version
@property
def env_prefix(self):
"""env_prefix is a value that is prefixed to the command that is run.
Usually this is to source a virtualenv, etc.
Commands basically end up looking like:
bash -c '{env_prefix} {cmd}'
so you'll often want to end your prefix with &&
"""
raise NotImplementedError
def run(self, cmd, **kwargs):
"""Returns (returncode, stdout, stderr)."""
return self.repo_cmd_runner.run(
['bash', '-c', ' '.join([self.env_prefix, cmd])], **kwargs
)