|
|
"""Module containing a transformer that converts outputs in the notebook from
|
|
|
one format to another.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2013, the IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from .base import Transformer
|
|
|
from IPython.utils.traitlets import Unicode
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Classes
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class ConvertFiguresTransformer(Transformer):
|
|
|
"""
|
|
|
Converts all of the outputs in a notebook from one format to another.
|
|
|
"""
|
|
|
|
|
|
from_format = Unicode(config=True, help='Format the converter accepts')
|
|
|
to_format = Unicode(config=True, help='Format the converter writes')
|
|
|
|
|
|
def __init__(self, **kw):
|
|
|
"""
|
|
|
Public constructor
|
|
|
"""
|
|
|
super(ConvertFiguresTransformer, self).__init__(**kw)
|
|
|
|
|
|
|
|
|
def convert_figure(self, data_format, data):
|
|
|
raise NotImplementedError()
|
|
|
|
|
|
|
|
|
def transform_cell(self, cell, resources, cell_index):
|
|
|
"""
|
|
|
Apply a transformation on each cell,
|
|
|
|
|
|
See base.py
|
|
|
"""
|
|
|
|
|
|
#Loop through all of the datatypes of the outputs in the cell.
|
|
|
for index, cell_out in enumerate(cell.get('outputs', [])):
|
|
|
for data_type, data in cell_out.items():
|
|
|
# this must run *before* extract figures,
|
|
|
# so figure_name and filename do not exist
|
|
|
self._convert_figure(cell_out, resources, data_type, data)
|
|
|
return cell, resources
|
|
|
|
|
|
|
|
|
def _convert_figure(self, cell_out, resources, data_type, data):
|
|
|
"""
|
|
|
Convert a figure and output the results to the cell output
|
|
|
"""
|
|
|
if not self.to_format in cell_out and data_type == self.from_format:
|
|
|
data = self.convert_figure(data_type, data)
|
|
|
cell_out[self.to_format] = data
|
|
|
|
