100 lines
4.2 KiB
Python
100 lines
4.2 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014-2016 Andrey Antukh <niwi@niwi.nz>
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# Copyright (C) 2014-2016 Jesús Espino <jespinog@gmail.com>
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# Copyright (C) 2014-2016 David Barragán <bameda@dbarragan.com>
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# Copyright (C) 2014-2016 Alejandro Alonso <alejandro.alonso@kaleidos.net>
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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 Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# The code is partially taken (and modified) from django rest framework
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# that is licensed under the following terms:
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#
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# Copyright (c) 2011-2014, Tom Christie
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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# Redistributions in binary form must reproduce the above copyright notice, this
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# list of conditions and the following disclaimer in the documentation and/or
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# other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from django.core.urlresolvers import resolve, get_script_prefix
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def get_breadcrumbs(url):
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"""
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Given a url returns a list of breadcrumbs, which are each a
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tuple of (name, url).
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"""
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from taiga.base.api.settings import api_settings
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from taiga.base.api.views import APIView
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view_name_func = api_settings.VIEW_NAME_FUNCTION
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def breadcrumbs_recursive(url, breadcrumbs_list, prefix, seen):
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"""
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Add tuples of (name, url) to the breadcrumbs list,
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progressively chomping off parts of the url.
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"""
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try:
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(view, unused_args, unused_kwargs) = resolve(url)
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except Exception:
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pass
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else:
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# Check if this is a REST framework view,
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# and if so add it to the breadcrumbs
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cls = getattr(view, "cls", None)
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if cls is not None and issubclass(cls, APIView):
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# Don't list the same view twice in a row.
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# Probably an optional trailing slash.
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if not seen or seen[-1] != view:
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suffix = getattr(view, "suffix", None)
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name = view_name_func(cls, suffix)
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breadcrumbs_list.insert(0, (name, prefix + url))
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seen.append(view)
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if url == "":
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# All done
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return breadcrumbs_list
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elif url.endswith("/"):
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# Drop trailing slash off the end and continue to try to
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# resolve more breadcrumbs
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url = url.rstrip("/")
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return breadcrumbs_recursive(url, breadcrumbs_list, prefix, seen)
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# Drop trailing non-slash off the end and continue to try to
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# resolve more breadcrumbs
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url = url[:url.rfind("/") + 1]
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return breadcrumbs_recursive(url, breadcrumbs_list, prefix, seen)
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prefix = get_script_prefix().rstrip("/")
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url = url[len(prefix):]
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return breadcrumbs_recursive(url, [], prefix, [])
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