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88 lines
2.7 KiB
Python
88 lines
2.7 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Wrapper for chromite tools.
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The script is intend to be symlinked to any number of chromite tools, attempts
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to find the path for chromite, and hands off to the right tool via exec if
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possible.
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It is intended to used strictly outside of the chroot.
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"""
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import os
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import sys
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# Min version of Python that we *want*. We warn for older versions.
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MIN_PYTHON_VER_SOFT = (3, 6)
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# Min version of Python that we *require*. We abort for older versions.
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# TODO(vapier): Hard require Python 3.6 by end of 2020.
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MIN_PYTHON_VER_HARD = (3, 4)
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def _FindChromite(path):
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"""Find the chromite dir in a repo, gclient, or submodule checkout."""
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path = os.path.abspath(path)
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# Depending on the checkout type (whether repo chromeos or gclient chrome)
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# Chromite lives in a different location.
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roots = (
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('.repo', 'chromite/.git'),
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('.gclient', 'src/third_party/chromite/.git'),
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('src/.gitmodules', 'src/third_party/chromite/.git'),
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)
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while path != '/':
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for root, chromite_git_dir in roots:
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if all(os.path.exists(os.path.join(path, x))
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for x in [root, chromite_git_dir]):
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return os.path.dirname(os.path.join(path, chromite_git_dir))
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path = os.path.dirname(path)
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return None
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def _MissingErrorOut(target):
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sys.stderr.write("""ERROR: Couldn't find the chromite tool %s.
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Please change to a directory inside your Chromium OS source tree
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and retry. If you need to setup a Chromium OS source tree, see
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https://chromium.googlesource.com/chromiumos/docs/+/HEAD/developer_guide.md
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""" % target)
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return 127
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def _CheckPythonVersion():
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"""Verify active Python is new enough."""
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if sys.version_info >= MIN_PYTHON_VER_SOFT:
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return
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progname = os.path.basename(sys.argv[0])
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print('%s: Chrome OS requires Python-%s+, but found "%s"' %
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(progname, '.'.join(str(x) for x in MIN_PYTHON_VER_SOFT),
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sys.version.replace('\n', ' ')), file=sys.stderr)
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if sys.version_info < MIN_PYTHON_VER_HARD:
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print('%s: fatal: giving up since Python is too old.' % (progname,),
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file=sys.stderr)
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sys.exit(1)
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print('warning: temporarily continuing anyways; you must upgrade soon to '
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'maintain support.', file=sys.stderr)
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def main():
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_CheckPythonVersion()
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chromite_dir = _FindChromite(os.getcwd())
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target = os.path.basename(sys.argv[0])
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if chromite_dir is None:
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return _MissingErrorOut(target)
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path = os.path.join(chromite_dir, 'bin', target)
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os.execv(path, [path] + sys.argv[1:])
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if __name__ == '__main__':
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sys.exit(main())
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