9e1172fc83
This makes the class extensible while containing the info in a visible place. Also, make sure that the prefix is being called wherever it is actually used, not using static strings. Renamed decode_content to decode_response_content for (ever so) slightly more meaningful name. More to come.
62 lines
2.2 KiB
Python
62 lines
2.2 KiB
Python
#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""Utility functions grab bag."""
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try: # Python 3
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ConnectionRefused = ConnectionRefusedError
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except NameError: # Python 2
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import socket
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ConnectionRefused = socket.error
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def decode_response_content(header_dict, content):
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"""Decode content to a proper string."""
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content_type, charset = extract_content_type(header_dict)
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if not_binary(content_type):
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return content.decode(charset)
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else:
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return content
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def extract_content_type(header_dict):
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"""Extract content-type from headers."""
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content_type = header_dict.get('content-type',
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'application/binary').strip().lower()
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charset = 'utf-8'
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if ';' in content_type:
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content_type, parameter_strings = (attr.strip() for attr
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in content_type.split(';', 1))
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try:
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parameter_pairs = [atom.strip().split('=')
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for atom in parameter_strings.split(';')]
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parameters = {name: value for name, value in parameter_pairs}
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charset = parameters['charset']
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except (ValueError, KeyError):
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# KeyError when no charset found.
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# ValueError when the parameter_strings are poorly
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# formed (for example trailing ;)
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pass
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return (content_type, charset)
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def not_binary(content_type):
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"""Decide if something is content we'd like to treat as a string."""
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return (content_type.startswith('text/') or
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content_type.endswith('+xml') or
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content_type.endswith('+json') or
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content_type == 'application/javascript' or
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content_type.startswith('application/json'))
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