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import logging
import sys

from webkitpy.tool.steps.abstractstep import AbstractStep
from webkitpy.tool.steps.options import Options

_log = logging.getLogger(__name__)


class EnsureLocalCommitIfNeeded(AbstractStep):
    @classmethod
    def options(cls):
        return AbstractStep.options() + [
            Options.local_commit,
        ]

    def run(self, state):
        if self._options.local_commit and not self._tool.scm().supports_local_commits():
            _log.error("--local-commit passed, but %s does not support local commits" % self._tool.scm().display_name())
            sys.exit(1)