from mercurial.demandload import demandload

demandload(globals(), 'mercurial:util re')

def mkkw(repo, tip=False, node=''):

    '''Gathers info for Hg keyword and returns it as raw replacement string.'''

    # get hex

    if tip:

        parent1 = repo.changelog.tip()

    else:

        parent1 = repo.dirstate.parents()[0]

    if not node:

        node = repo.changectx(parent1)

    user, date = repo.changelog.read(parent1)[1:3]

    user = util.shortuser(user)

    date = util.datestr(date=date, format=util.defaultdateformats[0])

                                               # %Y-%m-%d %H:%M:%S

    return r'\1 %s %s %s $' % (node, date, user)

def rekw():

    '''Returns compiled regex to detect hg keywords.'''

    return re.compile(r'([$]Hg: .+?,v).*?\$')