1# Copyright (C) 2010 Google Inc. All rights reserved.
2#
3# Redistribution and use in source and binary forms, with or without
4# modification, are permitted provided that the following conditions are
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7#     * Redistributions of source code must retain the above copyright
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11# in the documentation and/or other materials provided with the
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15# this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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28
29from webkitpy.tool.steps.abstractstep import AbstractStep
30from webkitpy.tool.steps.options import Options
31from webkitpy.common.system.executive import ScriptError
32
33
34class DiscardLocalChanges(AbstractStep):
35
36    @classmethod
37    def options(cls):
38        return AbstractStep.options() + [
39            Options.clean,
40            Options.force_clean,
41        ]
42
43    def run(self, state):
44        if not self._options.clean:
45            return
46
47        if not self._options.force_clean:
48            if self._tool.scm().has_working_directory_changes():
49                raise ScriptError("Working directory has changes, pass --force-clean to continue.")
50            if self._tool.scm().has_local_commits():
51                raise ScriptError("Repository has local commits, pass --force-clean to continue.")
52        self._tool.scm().discard_local_changes()
53