#!/usr/bin/env python
"""
stub for the hg backend of silvermirror
"""

import os
from mercurial import commands, hg, ui

def update(host, path):
    """
    get changes from host on path
    """
    ui = ui.ui()
    try: 
        repo = hg.repository(ui, path)
        command = commands.pull
    except mercurial.repo.RepoError:
        repo = hg.repository(ui, 'ssh://%s/%s' % (host, path))
        command = commands.clone