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80 lines
2.2 KiB
Python
80 lines
2.2 KiB
Python
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#
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# Copyright (C) 2011 - 2018 Satoru SATOH <ssato @ redhat.com>
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# License: MIT
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#
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# Ref. python -c "import json; help(json)"
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#
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# pylint: disable=import-error
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r"""JSON backend:
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- Format to support: JSON, http://www.json.org
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- Requirements: json in python standard library (>= python 2.6) or simplejson
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- Development Status :: 5 - Production/Stable
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- Limitations: None obvious
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- Special options:
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- All options of json.load{s,} and json.dump{s,} except object_hook
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should work.
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- See also: https://docs.python.org/3/library/json.html or
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https://docs.python.org/2/library/json.html dependent on the python version
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to use.
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Changelog:
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.. versionchanged:: 0.9.6
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- Add support of loading primitives other than mapping objects.
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.. versionadded:: 0.0.1
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"""
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from __future__ import absolute_import
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try:
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import json
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_CID = "std"
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except ImportError:
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import simplejson as json
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_CID = "simplejson"
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import anyconfig.backend.base
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import anyconfig.compat
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_LOAD_OPTS = ["cls", "object_hook", "parse_float", "parse_int",
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"parse_constant"]
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_DUMP_OPTS = ["skipkeys", "ensure_ascii", "check_circular", "allow_nan",
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"cls", "indent", "separators", "default", "sort_keys"]
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_DICT_OPTS = ["object_hook"]
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# It seems that 'encoding' argument is not allowed in json.load[s] and
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# json.dump[s] in JSON module in python 3.x.
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if not anyconfig.compat.IS_PYTHON_3:
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_LOAD_OPTS.append("encoding")
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_DUMP_OPTS.append("encoding")
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if not anyconfig.compat.IS_PYTHON_2_6:
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_LOAD_OPTS.append("object_pairs_hook")
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_DICT_OPTS.insert(0, "object_pairs_hook") # Higher prio. than object_hook
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class Parser(anyconfig.backend.base.StringStreamFnParser):
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"""
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Parser for JSON files.
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"""
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_cid = _CID
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_type = "json"
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_extensions = ["json", "jsn", "js"]
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_load_opts = _LOAD_OPTS
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_dump_opts = _DUMP_OPTS
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_ordered = not anyconfig.compat.IS_PYTHON_2_6
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_allow_primitives = True
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_dict_opts = _DICT_OPTS
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_load_from_string_fn = anyconfig.backend.base.to_method(json.loads)
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_load_from_stream_fn = anyconfig.backend.base.to_method(json.load)
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_dump_to_string_fn = anyconfig.backend.base.to_method(json.dumps)
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_dump_to_stream_fn = anyconfig.backend.base.to_method(json.dump)
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# vim:sw=4:ts=4:et:
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