Synnefo

# Copyright (C) 2013 GRNET S.A. All rights reserved.

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# without modification, are permitted provided that the following

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#      disclaimer.

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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

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# or implied, of GRNET S.

from urlparse import urlparse

def join_urls(*args):

    """

    Join arguments into a url.

    >>> join_urls("http://www.test.org", "path")

    'http://www.test.org/path'

    >>> join_urls("http://www.test.org/", "path")

    'http://www.test.org/path'

    >>> join_urls("http://www.test.org", "/path")

    'http://www.test.org/path'

    >>> join_urls("http://www.test.org/", "/path")

    'http://www.test.org/path'

    >>> join_urls("http://www.test.org/", "/path/")

    'http://www.test.org/path/'

    >>> join_urls("http://www.test.org/a/b", "c/d")

    'http://www.test.org/a/b/c/d'

    >>> join_urls("http://www.test.org/a/b/", "c/d")

    'http://www.test.org/a/b/c/d'

    >>> join_urls("http://www.test.org/a/b", "/c/d")

    'http://www.test.org/a/b/c/d'

    >>> join_urls("http://www.test.org/a/b/", "/c/d")

    'http://www.test.org/a/b/c/d'

    >>> join_urls("http://www.test.org/a/b/", "/c/d/", "/e/f/")

    'http://www.test.org/a/b/c/d/e/f/'

    >>> join_urls("/path1", "/path")

    '/path1/path'

    >>> join_urls("path1", "/path")

    'path1/path'

    >>> join_urls("path1/")

    'path1/'

    >>> join_urls("path1/", "path2", "path3")

    'path1/path2/path3'

    >>> join_urls("", "path2", "path3")

    'path2/path3'

    >>> join_urls("", "", "")

    ''

    """

    args = filter(bool, args)

    if len(args) == 0:

        return ''

    if len(args) == 1:

        return args[0]

    return "/".join([args[0].rstrip("/")] +

                    [a.strip("/") for a in args[1:-1]] +

                    [args[-1].lstrip("/")])

def parse_base_url(base_url):

    """

    >>> parse_base_url("https://one.two.three/four/five")

    ('https://one.two.three', 'four/five')

    >>> parse_base_url("https://one.two.three/four/five/")

    ('https://one.two.three', 'four/five')

    >>> parse_base_url("https://one.two.three/")

    ('https://one.two.three', '')

    >>> parse_base_url("https://one.two.three")

    ('https://one.two.three', '')

    """

    parsed = urlparse(base_url)

    base_path = parsed.path.strip('/')

    base_host = parsed.scheme + '://' + parsed.netloc

    return base_host, base_path

if __name__ == "__main__":

    import doctest

    doctest.testmod()