view mercurial/utils/resourceutil.py @ 43671:664e24207728

procutil: move mainfrozen() to new resourceutil.py

The i18n module practically depends on procutil for mainfrozen() but
since procutil depends on i18n, it would be a circular dependency if
i18n depended directly on procutil. The cycle is currently resolved by
having the higher-level util module calculate the "datapath" and
inject it into i18n. Extracting mainfrozen() to a new module lets us
clean up the dependencies.

Differential Revision: https://phab.mercurial-scm.org/D7433

# resourceutil.py - utility for looking up resources
#
#  Copyright 2005 K. Thananchayan <[e-mail]>
#  Copyright 2005-2007 Matt Mackall <[e-mail]>
#  Copyright 2006 Vadim Gelfer <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.

from __future__ import absolute_import

import imp
import sys

from .. import pycompat


def mainfrozen():
    """return True if we are a frozen executable.

    The code supports py2exe (most common, Windows only) and tools/freeze
    (portable, not much used).
    """
    return (
        pycompat.safehasattr(sys, "frozen")
        or pycompat.safehasattr(sys, "importers")  # new py2exe
        or imp.is_frozen("__main__")  # old py2exe
    )  # tools/freeze