comparison mercurial/extensions.py @ 45105:5d09a120b4be

extensions: make `hg nonexistent` not crash with PyOxidizer

When running `hg nonexistent`, we try to look for extensions that
provide that command. We do that by looking for files in the
`hgext.__file__` directory. However, PyOxidizer doesn't provide a
`__file__`, so we crash when running with PyOxidizer.

We should be able to look for the command in built-in extensions, but
we seem to already have code for skipping the scan when running in a
frozen binary, so I just modified that code instead.

By the way, it also seems like we should be able to search for
extensions in the `hgext3rd` module, but we don't do that yet either
(before or after this patch).

Differential Revision: https://phab.mercurial-scm.org/D8750

45104:eb26a9cf7821

def _disabledpaths():
    '''find paths of disabled extensions. returns a dict of {name: path}'''
    import hgext

    extpath = os.path.dirname(
        os.path.abspath(pycompat.fsencode(hgext.__file__))
    )
    try:  # might not be a filesystem path
        files = os.listdir(extpath)
    except OSError:
        return {}

    exts = {}
    for e in files:
        if e.endswith(b'.py'):

45105:5d09a120b4be

def _disabledpaths():
    '''find paths of disabled extensions. returns a dict of {name: path}'''
    import hgext

    # The hgext might not have a __file__ attribute (e.g. in PyOxidizer) and
    # it might not be on a filesystem even if it does.
    if util.safehasattr(hgext, '__file__'):
        extpath = os.path.dirname(
            os.path.abspath(pycompat.fsencode(hgext.__file__))
        )
        try:
            files = os.listdir(extpath)
        except OSError:
            return {}
    else:
        return {}

    exts = {}
    for e in files:
        if e.endswith(b'.py'):