##// END OF EJS Templates
Starting to rename text cell to html cell.
Starting to rename text cell to html cell.

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r4498:b0e516c2
r4498:b0e516c2
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current.py
195 lines | 4.9 KiB | text/x-python | PythonLexer
Brian E. Granger
Full versioning added to nbformat.
r4406 import json
from xml.etree import ElementTree as ET
import re
from IPython.nbformat import v2
from IPython.nbformat import v1
Brian E. Granger
Massive work on the notebook document format....
r4484 from IPython.nbformat.v2 import (
NotebookNode,
Brian E. Granger
Starting to rename text cell to html cell.
r4498 new_code_cell, new_html_cell, new_notebook, new_output, new_worksheet
Brian E. Granger
Massive work on the notebook document format....
r4484 )
Brian E. Granger
Full versioning added to nbformat.
r4406
current_nbformat = 2
class NBFormatError(Exception):
pass
def parse_json(s, **kwargs):
"""Parse a string into a (nbformat, dict) tuple."""
d = json.loads(s, **kwargs)
nbformat = d.get('nbformat',1)
return nbformat, d
def parse_xml(s, **kwargs):
"""Parse a string into a (nbformat, etree) tuple."""
root = ET.fromstring(s)
nbformat_e = root.find('nbformat')
if nbformat_e is not None:
nbformat = int(nbformat_e.text)
else:
raise NBFormatError('No nbformat version found')
return nbformat, root
def parse_py(s, **kwargs):
"""Parse a string into a (nbformat, string) tuple."""
pattern = r'# <nbformat>(?P<nbformat>\d+)</nbformat>'
m = re.search(pattern,s)
if m is not None:
nbformat = int(m.group('nbformat'))
else:
Brian E. Granger
Improvements to file uploaded, mime types and .py reader....
r4493 nbformat = 2
Brian E. Granger
Full versioning added to nbformat.
r4406 return nbformat, s
def reads_json(s, **kwargs):
"""Read a JSON notebook from a string and return the NotebookNode object."""
nbformat, d = parse_json(s, **kwargs)
if nbformat == 1:
nb = v1.to_notebook_json(d, **kwargs)
nb = v2.convert_to_this_nbformat(nb, orig_version=1)
elif nbformat == 2:
nb = v2.to_notebook_json(d, **kwargs)
else:
raise NBFormatError('Unsupported JSON nbformat version: %i' % nbformat)
return nb
def writes_json(nb, **kwargs):
return v2.writes_json(nb, **kwargs)
def reads_xml(s, **kwargs):
"""Read an XML notebook from a string and return the NotebookNode object."""
nbformat, root = parse_xml(s, **kwargs)
if nbformat == 2:
nb = v2.to_notebook_xml(root, **kwargs)
else:
raise NBFormatError('Unsupported XML nbformat version: %i' % nbformat)
return nb
def writes_xml(nb, **kwargs):
return v2.writes_xml(nb, **kwargs)
def reads_py(s, **kwargs):
"""Read a .py notebook from a string and return the NotebookNode object."""
nbformat, s = parse_py(s, **kwargs)
if nbformat == 2:
nb = v2.to_notebook_py(s, **kwargs)
else:
raise NBFormatError('Unsupported PY nbformat version: %i' % nbformat)
return nb
def writes_py(nb, **kwargs):
return v2.writes_py(nb, **kwargs)
# High level API
def reads(s, format, **kwargs):
"""Read a notebook from a string and return the NotebookNode object.
This function properly handles notebooks of any version. The notebook
returned will always be in the current version's format.
Parameters
----------
s : str
The raw string to read the notebook from.
format : ('xml','json','py')
The format that the string is in.
Returns
-------
nb : NotebookNode
The notebook that was read.
"""
if format == 'xml':
return reads_xml(s, **kwargs)
elif format == 'json':
return reads_json(s, **kwargs)
elif format == 'py':
return reads_py(s, **kwargs)
else:
raise NBFormatError('Unsupported format: %s' % format)
def writes(nb, format, **kwargs):
"""Write a notebook to a string in a given format in the current nbformat version.
This function always writes the notebook in the current nbformat version.
Parameters
----------
nb : NotebookNode
The notebook to write.
format : ('xml','json','py')
The format to write the notebook in.
Returns
-------
s : str
The notebook string.
"""
if format == 'xml':
return writes_xml(nb, **kwargs)
elif format == 'json':
return writes_json(nb, **kwargs)
elif format == 'py':
return writes_py(nb, **kwargs)
else:
raise NBFormatError('Unsupported format: %s' % format)
def read(fp, format, **kwargs):
"""Read a notebook from a file and return the NotebookNode object.
This function properly handles notebooks of any version. The notebook
returned will always be in the current version's format.
Parameters
----------
fp : file
Any file-like object with a read method.
format : ('xml','json','py')
The format that the string is in.
Returns
-------
nb : NotebookNode
The notebook that was read.
"""
return reads(fp.read(), format, **kwargs)
def write(nb, fp, format, **kwargs):
"""Write a notebook to a file in a given format in the current nbformat version.
This function always writes the notebook in the current nbformat version.
Parameters
----------
nb : NotebookNode
The notebook to write.
fp : file
Any file-like object with a write method.
format : ('xml','json','py')
The format to write the notebook in.
Returns
-------
s : str
The notebook string.
"""
return fp.write(writes(nb, format, **kwargs))