comparison mercurial/extensions.py @ 49780:9d8757ddd0ab stable

extensions: process disabled external paths when `hgext` package is in-memory

This fixes `hg help -e ambiguous` in test-helpt.t:2055 with the
`ambiguous = !./ambiguous.py` configuration, when `hgext` is not in the
filesystem (e.g. pyoxidizer builds with in-memory resources, or TortoiseHg with
py2exe), but the disabled external extension is.  Now instead of aborting with a
suggestion to try `--keyword`, the help command prints text for the extension.

49779:7d6c8943353a

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(
            util.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'):
            name = e.rsplit(b'.', 1)[0]
            path = os.path.join(extpath, e)
        else:
            name = e
            path = os.path.join(extpath, e, b'__init__.py')
            if not os.path.exists(path):
                continue
        if name in exts or name in _order or name == b'__init__':
            continue
        exts[name] = path
    for name, path in _disabledextensions.items():
        # If no path was provided for a disabled extension (e.g. "color=!"),
        # don't replace the path we already found by the scan above.
        if path:
            exts[name] = path

49780:9d8757ddd0ab

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

    exts = {}

    # 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(
            util.abspath(pycompat.fsencode(hgext.__file__))
        )
        try:
            files = os.listdir(extpath)
        except OSError:
            pass
        else:
            for e in files:
                if e.endswith(b'.py'):
                    name = e.rsplit(b'.', 1)[0]
                    path = os.path.join(extpath, e)
                else:
                    name = e
                    path = os.path.join(extpath, e, b'__init__.py')
                    if not os.path.exists(path):
                        continue
                if name in exts or name in _order or name == b'__init__':
                    continue
                exts[name] = path

    for name, path in _disabledextensions.items():
        # If no path was provided for a disabled extension (e.g. "color=!"),
        # don't replace the path we already found by the scan above.
        if path:
            exts[name] = path