utils.py 文件源码

python
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项目:python-kingbirdclient 作者: openstack 项目源码 文件源码
def get_contents_if_file(contents_or_file_name):
    """Get the contents of a file.

    If the value passed in is a file name or file URI, return the
    contents. If not, or there is an error reading the file contents,
    return the value passed in as the contents.

    For example, a workflow definition will be returned if either the
    workflow definition file name, or file URI are passed in, or the
    actual workflow definition itself is passed in.
    """
    try:
        if parse.urlparse(contents_or_file_name).scheme:
            definition_url = contents_or_file_name
        else:
            path = os.path.abspath(contents_or_file_name)
            definition_url = parse.urljoin(
                'file:',
                request.pathname2url(path)
            )
        return request.urlopen(definition_url).read().decode('utf8')
    except Exception:
        return contents_or_file_name
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