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37 lines
1.2 KiB
Python
37 lines
1.2 KiB
Python
# Python
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from collections import OrderedDict
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import json
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# Django
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from django.conf import settings
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from django.utils.encoding import smart_str
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from django.utils.translation import ugettext_lazy as _
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# Django REST Framework
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from rest_framework import parsers
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from rest_framework.exceptions import ParseError
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class JSONParser(parsers.JSONParser):
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"""
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Parses JSON-serialized data, preserving order of dictionary keys.
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"""
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def parse(self, stream, media_type=None, parser_context=None):
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"""
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Parses the incoming bytestream as JSON and returns the resulting data.
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"""
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parser_context = parser_context or {}
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encoding = parser_context.get('encoding', settings.DEFAULT_CHARSET)
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try:
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data = smart_str(stream.read(), encoding=encoding)
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if not data:
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return {}
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obj = json.loads(data, object_pairs_hook=OrderedDict)
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if not isinstance(obj, dict) and obj is not None:
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raise ParseError(_('JSON parse error - not a JSON object'))
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return obj
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except ValueError as exc:
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raise ParseError(_('JSON parse error - %s\nPossible cause: trailing comma.' % str(exc)))
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