# Copyright (c) 2008-2010 gocept gmbh & co. kg
# See also LICENSE.txt

import contextlib
import logging
import zeit.cms.checkout.interfaces


log = logging.getLogger(__name__)


def with_checked_out(content, function, events=True):
    """Call a function with a checked out version of content.

    Function makes sure content is checked back in after the function ran.

    """
    with checked_out(content, events) as checked_out_obj:
        if checked_out_obj is not None:
            changed = function(checked_out_obj)
            if not changed:
                raise zeit.cms.checkout.interfaces.NotChanged()


@contextlib.contextmanager
def checked_out(content, events=True, semantic_change=False,
                ignore_conflicts=False):
    __traceback_info__ = (content.uniqueId,)
    manager = zeit.cms.checkout.interfaces.ICheckoutManager(content)
    try:
        checked_out = manager.checkout(temporary=True, event=events)
    except zeit.cms.checkout.interfaces.CheckinCheckoutError, e:
        log.warning("Could not checkout %s for related update." %
                       content.uniqueId, exc_info=True)
        yield None
    else:
        try:
            yield checked_out
        except zeit.cms.checkout.interfaces.NotChanged:
            del checked_out.__parent__[checked_out.__name__]
        else:
            manager = zeit.cms.checkout.interfaces.ICheckinManager(checked_out)
            manager.checkin(event=events, semantic_change=semantic_change,
                            ignore_conflicts=ignore_conflicts)

@@ -1044,27 +1044,8 @@
 t %25s
- for related update
 .%22 %25

fix misleading log message