|
|
"""Read and write notebooks in JSON format."""
|
|
|
|
|
|
# Copyright (c) IPython Development Team.
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
|
|
|
import copy
|
|
|
import json
|
|
|
|
|
|
from IPython.utils import py3compat
|
|
|
|
|
|
from .nbbase import from_dict
|
|
|
from .rwbase import (
|
|
|
NotebookReader, NotebookWriter, rejoin_lines, split_lines, strip_transient
|
|
|
)
|
|
|
|
|
|
|
|
|
class BytesEncoder(json.JSONEncoder):
|
|
|
"""A JSON encoder that accepts b64 (and other *ascii*) bytestrings."""
|
|
|
def default(self, obj):
|
|
|
if isinstance(obj, bytes):
|
|
|
return obj.decode('ascii')
|
|
|
return json.JSONEncoder.default(self, obj)
|
|
|
|
|
|
|
|
|
class JSONReader(NotebookReader):
|
|
|
|
|
|
def reads(self, s, **kwargs):
|
|
|
nb = json.loads(s, **kwargs)
|
|
|
nb = self.to_notebook(nb, **kwargs)
|
|
|
return nb
|
|
|
|
|
|
def to_notebook(self, d, **kwargs):
|
|
|
nb = rejoin_lines(from_dict(d))
|
|
|
nb = strip_transient(nb)
|
|
|
return nb
|
|
|
|
|
|
|
|
|
class JSONWriter(NotebookWriter):
|
|
|
|
|
|
def writes(self, nb, **kwargs):
|
|
|
kwargs['cls'] = BytesEncoder
|
|
|
kwargs['indent'] = 1
|
|
|
kwargs['sort_keys'] = True
|
|
|
kwargs['separators'] = (',',': ')
|
|
|
# don't modify in-memory dict
|
|
|
nb = copy.deepcopy(nb)
|
|
|
if kwargs.pop('split_lines', True):
|
|
|
nb = split_lines(nb)
|
|
|
nb = strip_transient(nb)
|
|
|
return py3compat.str_to_unicode(json.dumps(nb, **kwargs), 'utf-8')
|
|
|
|
|
|
|
|
|
_reader = JSONReader()
|
|
|
_writer = JSONWriter()
|
|
|
|
|
|
reads = _reader.reads
|
|
|
read = _reader.read
|
|
|
to_notebook = _reader.to_notebook
|
|
|
write = _writer.write
|
|
|
writes = _writer.writes
|
|
|
|