mirror of
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65 lines
2.5 KiB
Python
65 lines
2.5 KiB
Python
# Copyright (c) 2011-2020 Eric Froemling
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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# -----------------------------------------------------------------------------
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"""Json related tools functionality."""
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from __future__ import annotations
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import json
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from typing import TYPE_CHECKING
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if TYPE_CHECKING:
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from typing import Dict, Any
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class NoIndent:
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"""Used to prevent indenting in our custom json encoder.
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Wrap values in this before passing to encoder and all child
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values will be a single line in the json output."""
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def __init__(self, value: Any) -> None:
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self.value = value
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class NoIndentEncoder(json.JSONEncoder):
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"""Our custom encoder implementing selective indentation."""
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def __init__(self, *args: Any, **kwargs: Any):
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super(NoIndentEncoder, self).__init__(*args, **kwargs)
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self.kwargs = dict(kwargs)
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del self.kwargs['indent']
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self._replacement_map: Dict = {}
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def default(self, o: Any) -> Any: # pylint: disable=method-hidden
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import uuid
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if isinstance(o, NoIndent):
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key = uuid.uuid4().hex
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self._replacement_map[key] = json.dumps(o.value, **self.kwargs)
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return "@@%s@@" % (key, )
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return super(NoIndentEncoder, self).default(o)
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def encode(self, o: Any) -> Any:
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result = super(NoIndentEncoder, self).encode(o)
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for k, v in self._replacement_map.items():
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result = result.replace('"@@%s@@"' % (k, ), v)
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return result
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