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75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
# Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# Mechanism to generate static HTML redirect pages in the output
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#
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# Uses redirect_template.html and the list of pages given in
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# the file conf.html_redirect_pages
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#
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# Adapted from ideas in https://tech.signavio.com/2017/managing-sphinx-redirects
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import os.path
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from sphinx.builders.html import StandaloneHTMLBuilder
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REDIRECT_TEMPLATE = """
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<html>
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<head>
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<meta http-equiv="refresh" content="0; url=$NEWURL" />
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<script>
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window.location.href = "$NEWURL"
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</script>
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</head>
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<body>
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<p>Page has moved <a href="$NEWURL">here</a>.</p>
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</body>
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</html>
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"""
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def setup(app):
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app.add_config_value('html_redirect_pages', [], 'html')
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# attaching to this event is a hack, but it's a convenient stage in the build
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# to create HTML redirects
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app.connect('html-collect-pages', create_redirect_pages)
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return {'parallel_read_safe': True, 'parallel_write_safe': True, 'version': '0.1'}
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def create_redirect_pages(app):
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if not isinstance(app.builder, StandaloneHTMLBuilder):
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return # only relevant for standalone HTML output
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for (old_url, new_url) in app.config.html_redirect_pages:
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print('Creating redirect %s to %s...' % (old_url, new_url))
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if old_url.startswith('/'):
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print('Stripping leading / from URL in config file...')
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old_url = old_url[1:]
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new_url = app.builder.get_relative_uri(old_url, new_url)
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out_file = app.builder.get_outfilename(old_url)
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print('HTML file %s redirects to relative URL %s' % (out_file, new_url))
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out_dir = os.path.dirname(out_file)
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if not os.path.exists(out_dir):
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os.makedirs(out_dir)
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content = REDIRECT_TEMPLATE.replace('$NEWURL', new_url)
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with open(out_file, 'w') as rp:
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rp.write(content)
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return []
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