template_utils.py 文件源码

def get_template_contents(template_file=None, template_url=None,
                          files=None):

    # Transform a bare file path to a file:// URL.
    if template_file:  # nosec
        template_url = utils.normalise_file_path_to_url(template_file)
        tpl = request.urlopen(template_url).read()
    else:
        raise exceptions.CommandErrorException(_('Need to specify exactly '
                                                 'one of %(arg1)s, %(arg2)s '
                                                 'or %(arg3)s') %
                                               {'arg1': '--template-file',
                                                'arg2': '--template-url'})

    if not tpl:
        raise exceptions.CommandErrorException(_('Could not fetch '
                                                 'template from %s') %
                                               template_url)

    try:
        if isinstance(tpl, six.binary_type):
            tpl = tpl.decode('utf-8')
        template = template_format.parse(tpl)
    except ValueError as e:
        raise exceptions.CommandErrorException(_('Error parsing template '
                                                 '%(url)s %(error)s') %
                                               {'url': template_url,
                                                'error': e})
    return template