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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import attr
from ..result import Issue
class UnixFormatter(object):
"""Formatter that respects Unix output conventions frequently
employed by preprocessors and compilers. The format is
`<FILENAME>:<LINE>[:<COL>]: <RULE> <LEVEL>: <MESSAGE>`.
"""
fmt = "{path}:{lineno}:{column} {rule} {level}: {message}"
def __call__(self, result):
msg = []
for path, errors in sorted(result.issues.items()):
for err in errors:
assert isinstance(err, Issue)
slots = attr.asdict(err)
slots["path"] = slots["relpath"]
slots["column"] = "%d:" % slots["column"] if slots["column"] else ""
slots["rule"] = slots["rule"] or slots["linter"]
msg.append(self.fmt.format(**slots))
return "\n".join(msg)
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