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breezy/git/urls.py

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# Copyright (C) 2018 Jelmer Vernooij <jelmer@jelmer.uk>

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#

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# This program is free software; you can redistribute it and/or modify

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# it under the terms of the GNU General Public License as published by

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# the Free Software Foundation; either version 2 of the License, or

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# (at your option) any later version.

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#

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# This program is distributed in the hope that it will be useful,

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# but WITHOUT ANY WARRANTY; without even the implied warranty of

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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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# GNU General Public License for more details.

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#

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# You should have received a copy of the GNU General Public License

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# along with this program; if not, write to the Free Software

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

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"""URL Conversion."""

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from __future__ import absolute_import

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from .. import urlutils

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from .refs import (

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    ref_to_branch_name,

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    )

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from dulwich.client import parse_rsync_url

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KNOWN_GIT_SCHEMES = ['git+ssh', 'git', 'http', 'https', 'ftp']

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def git_url_to_bzr_url(location, branch=None, ref=None):

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    if branch is not None and ref is not None:

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        raise ValueError('only specify one of branch or ref')

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    url = urlutils.URL.from_string(location)

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    if (url.scheme not in KNOWN_GIT_SCHEMES and

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            not url.scheme.startswith('chroot-')):

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        try:

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            (username, host, path) = parse_rsync_url(location)

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        except ValueError:

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            return location

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        else:

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            url = urlutils.URL(

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                scheme='git+ssh',

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                quoted_user=(urlutils.quote(username) if username else None),

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                quoted_password=None,

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                quoted_host=urlutils.quote(host),

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                port=None,

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                quoted_path=urlutils.quote(path, safe="/~"))

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        location = str(url)

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    if ref == b'HEAD':

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        ref = branch = None

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    if ref:

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        try:

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            branch = ref_to_branch_name(ref)

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        except ValueError:

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            branch = None

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        else:

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            ref = None

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    if ref or branch:

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        params = {}

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        if ref:

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            params['ref'] = urlutils.quote_from_bytes(ref, safe='')

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        if branch:

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            params['branch'] = urlutils.escape(branch, safe='')

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        location = urlutils.join_segment_parameters(location, params)

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    return location

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def bzr_url_to_git_url(location):

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    target_url, target_params = urlutils.split_segment_parameters(location)

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    branch = target_params.get('branch')

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    ref = target_params.get('ref')

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    return target_url, branch, ref

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