hgdemandimport/__init__.py
author Martin von Zweigbergk <martinvonz@google.com>
Fri, 06 Apr 2018 13:11:40 -0700
changeset 37446 d46d4f14300a
parent 33860 3cfc9070245f
child 37843 670eb4fa1b86
permissions -rw-r--r--
tests: enter full hex hash in plain text in bundle part We were looking it up be prefix by repo.__getitem__, which I'm about to drop support for. It's easiest to just include the full hash in plain text. Differential Revision: https://phab.mercurial-scm.org/D3168
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# hgdemandimport - global demand-loading of modules for Mercurial
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#
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# Copyright 2017 Facebook Inc.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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'''demandimport - automatic demand-loading of modules'''
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# This is in a separate package from mercurial because in Python 3,
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# demand loading is per-package. Keeping demandimport in the mercurial package
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# would disable demand loading for any modules in mercurial.
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from __future__ import absolute_import
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import os
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import sys
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if sys.version_info[0] >= 3:
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    from . import demandimportpy3 as demandimport
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else:
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    from . import demandimportpy2 as demandimport
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# Extensions can add to this list if necessary.
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ignore = [
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    '__future__',
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    '_hashlib',
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    # ImportError during pkg_resources/__init__.py:fixup_namespace_package
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    '_imp',
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    '_xmlplus',
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    'fcntl',
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    'nt', # pathlib2 tests the existence of built-in 'nt' module
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    'win32com.gen_py',
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    'win32com.shell', # 'appdirs' tries to import win32com.shell
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    '_winreg', # 2.7 mimetypes needs immediate ImportError
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    'pythoncom',
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    # imported by tarfile, not available under Windows
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    'pwd',
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    'grp',
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    # imported by profile, itself imported by hotshot.stats,
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    # not available under Windows
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    'resource',
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    # this trips up many extension authors
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    'gtk',
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    # setuptools' pkg_resources.py expects "from __main__ import x" to
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    # raise ImportError if x not defined
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    '__main__',
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    '_ssl', # conditional imports in the stdlib, issue1964
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    '_sre', # issue4920
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    'rfc822',
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    'mimetools',
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    'sqlalchemy.events', # has import-time side effects (issue5085)
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    # setuptools 8 expects this module to explode early when not on windows
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    'distutils.msvc9compiler',
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    '__builtin__',
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    'builtins',
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    'urwid.command_map', # for pudb
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    ]
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_pypy = '__pypy__' in sys.builtin_module_names
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if _pypy:
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    ignore.extend([
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        # _ctypes.pointer is shadowed by "from ... import pointer" (PyPy 5)
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        '_ctypes.pointer',
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    ])
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demandimport.init(ignore)
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# Re-export.
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isenabled = demandimport.isenabled
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disable = demandimport.disable
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deactivated = demandimport.deactivated
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def enable():
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    # chg pre-imports modules so do not enable demandimport for it
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    if ('CHGINTERNALMARK' not in os.environ
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        and os.environ.get('HGDEMANDIMPORT') != 'disable'):
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        demandimport.enable()