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"""The main API for the v2 notebook format.

Authors:

* Brian Granger

"""

#-----------------------------------------------------------------------------

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

#

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

# the file COPYING, distributed as part of this software.

#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------

# Imports

#-----------------------------------------------------------------------------

import os

from .nbbase import (

NotebookNode,

new_code_cell, new_text_cell, new_notebook, new_output, new_worksheet,

new_metadata, new_author

)

from .nbjson import reads as reads_json, writes as writes_json

from .nbjson import reads as read_json, writes as write_json

from .nbjson import to_notebook as to_notebook_json

from .nbxml import reads as reads_xml

from .nbxml import reads as read_xml

from .nbxml import to_notebook as to_notebook_xml

from .nbpy import reads as reads_py, writes as writes_py

from .nbpy import reads as read_py, writes as write_py

from .nbpy import to_notebook as to_notebook_py

from .convert import downgrade, upgrade

#-----------------------------------------------------------------------------

# Code

#-----------------------------------------------------------------------------

nbformat = 2

nbformat_minor = 0

def parse_filename(fname):

"""Parse a notebook filename.

This function takes a notebook filename and returns the notebook

format (json/py) and the notebook name. This logic can be

summarized as follows:

* notebook.ipynb -> (notebook.ipynb, notebook, json)

* notebook.json -> (notebook.json, notebook, json)

* notebook.py -> (notebook.py, notebook, py)

* notebook -> (notebook.ipynb, notebook, json)

Parameters

----------

fname : unicode

The notebook filename. The filename can use a specific filename

extention (.ipynb, .json, .py) or none, in which case .ipynb will

be assumed.

Returns

-------

(fname, name, format) : (unicode, unicode, unicode)

The filename, notebook name and format.

"""

basename, ext = os.path.splitext(fname)

if ext == u'.ipynb':

format = u'json'

elif ext == u'.json':

format = u'json'

elif ext == u'.py':

format = u'py'

else:

basename = fname

fname = fname + u'.ipynb'

format = u'json'

return fname, basename, format