Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/nbformat/v2/nbjson.py: 59%

1"""Read and write notebooks in JSON format. 

2 

3Authors: 

4 

5* Brian Granger 

6""" 

7 

8# ----------------------------------------------------------------------------- 

9# Copyright (C) 2008-2011 The IPython Development Team 

10# 

11# Distributed under the terms of the BSD License. The full license is in 

12# the file LICENSE, distributed as part of this software. 

13# ----------------------------------------------------------------------------- 

14 

15# ----------------------------------------------------------------------------- 

16# Imports 

17# ----------------------------------------------------------------------------- 

18from __future__ import annotations 

19 

20import copy 

21import json 

22 

23from .nbbase import from_dict 

24from .rwbase import NotebookReader, NotebookWriter, rejoin_lines, restore_bytes, split_lines 

25 

26# ----------------------------------------------------------------------------- 

27# Code 

28# ----------------------------------------------------------------------------- 

29 

30 

31class BytesEncoder(json.JSONEncoder): 

32 """A JSON encoder that accepts b64 (and other *ascii*) bytestrings.""" 

33 

34 def default(self, obj): 

35 """The default value of an object.""" 

36 if isinstance(obj, bytes): 

37 return obj.decode("ascii") 

38 return json.JSONEncoder.default(self, obj) 

39 

40 

41class JSONReader(NotebookReader): 

42 """A JSON notebook reader.""" 

43 

44 def reads(self, s, **kwargs): 

45 """Convert a string to a notebook.""" 

46 nb = json.loads(s, **kwargs) 

47 nb = self.to_notebook(nb, **kwargs) 

48 return nb # noqa: RET504 

49 

50 def to_notebook(self, d, **kwargs): 

51 """Convert a string to a notebook.""" 

52 return restore_bytes(rejoin_lines(from_dict(d))) 

53 

54 

55class JSONWriter(NotebookWriter): 

56 """A JSON notebook writer.""" 

57 

58 def writes(self, nb, **kwargs): 

59 """Convert a notebook object to a string.""" 

60 kwargs["cls"] = BytesEncoder 

61 kwargs["indent"] = 1 

62 kwargs["sort_keys"] = True 

63 if kwargs.pop("split_lines", True): 

64 nb = split_lines(copy.deepcopy(nb)) 

65 return json.dumps(nb, **kwargs) 

66 

67 

68_reader = JSONReader() 

69_writer = JSONWriter() 

70 

71reads = _reader.reads 

72read = _reader.read 

73to_notebook = _reader.to_notebook 

74write = _writer.write 

75writes = _writer.writes