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@@ -1,101 +1,101 b'' | |||
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1 | 1 | """Module containing a transformer that extracts all of the outputs from the |
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2 | 2 | notebook file. The extracted outputs are returned in the 'resources' dictionary. |
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3 | 3 | """ |
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4 | 4 | #----------------------------------------------------------------------------- |
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5 | 5 | # Copyright (c) 2013, the IPython Development Team. |
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6 | 6 | # |
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7 | 7 | # Distributed under the terms of the Modified BSD License. |
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8 | 8 | # |
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9 | 9 | # The full license is in the file COPYING.txt, distributed with this software. |
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10 | 10 | #----------------------------------------------------------------------------- |
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11 | 11 | |
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12 | 12 | #----------------------------------------------------------------------------- |
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13 | 13 | # Imports |
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14 | 14 | #----------------------------------------------------------------------------- |
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15 | 15 | |
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16 | 16 | import base64 |
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17 | 17 | import sys |
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18 | 18 | import os |
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19 | 19 | |
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20 | 20 | from IPython.utils.traitlets import Unicode |
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21 | 21 | from .base import Transformer |
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22 | 22 | from IPython.utils import py3compat |
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23 | 23 | |
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24 | 24 | #----------------------------------------------------------------------------- |
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25 | 25 | # Classes |
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26 | 26 | #----------------------------------------------------------------------------- |
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27 | 27 | |
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28 | 28 | class ExtractOutputTransformer(Transformer): |
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29 | 29 | """ |
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30 | 30 | Extracts all of the outputs from the notebook file. The extracted |
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31 | 31 | outputs are returned in the 'resources' dictionary. |
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32 | 32 | """ |
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33 | 33 | |
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34 | 34 | figure_filename_template = Unicode( |
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35 | 35 | "{unique_key}_{cell_index}_{index}.{extension}", config=True) |
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36 | 36 | |
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37 | 37 | |
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38 | 38 | def transform_cell(self, cell, resources, cell_index): |
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39 | 39 | """ |
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40 | 40 | Apply a transformation on each cell, |
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41 | 41 | |
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42 | 42 | Parameters |
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43 | 43 | ---------- |
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44 | 44 | cell : NotebookNode cell |
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45 | 45 | Notebook cell being processed |
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46 | 46 | resources : dictionary |
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47 | 47 | Additional resources used in the conversion process. Allows |
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48 | 48 | transformers to pass variables into the Jinja engine. |
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49 | 49 | cell_index : int |
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50 | 50 | Index of the cell being processed (see base.py) |
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51 | 51 | """ |
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52 | 52 | |
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53 | 53 | #Get the unique key from the resource dict if it exists. If it does not |
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54 |
#exist, use ' |
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54 | #exist, use 'output' as the default. Also, get files directory if it | |
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55 | 55 | #has been specified |
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56 |
unique_key = resources.get('unique_key', ' |
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56 | unique_key = resources.get('unique_key', 'output') | |
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57 | 57 | output_files_dir = resources.get('output_files_dir', None) |
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58 | 58 | |
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59 | 59 | #Make sure outputs key exists |
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60 | 60 | if not 'outputs' in resources: |
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61 | 61 | resources['outputs'] = {} |
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62 | 62 | |
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63 | 63 | #Loop through all of the outputs in the cell |
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64 | 64 | for index, out in enumerate(cell.get('outputs', [])): |
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65 | 65 | |
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66 | 66 | #Get the output in data formats that the template is interested in. |
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67 | 67 | for out_type in self.display_data_priority: |
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68 | 68 | if out.hasattr(out_type): |
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69 | 69 | data = out[out_type] |
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70 | 70 | |
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71 | 71 | #Binary files are base64-encoded, SVG is already XML |
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72 | 72 | if out_type in ('png', 'jpg', 'jpeg', 'pdf'): |
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73 | 73 | # data is b64-encoded as text (str, unicode) |
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74 | 74 | # decodestring only accepts bytes |
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75 | 75 | data = py3compat.cast_bytes(data) |
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76 | 76 | data = base64.decodestring(data) |
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77 | 77 | elif sys.platform == 'win32': |
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78 | 78 | data = data.replace('\n', '\r\n').encode("UTF-8") |
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79 | 79 | else: |
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80 | 80 | data = data.encode("UTF-8") |
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81 | 81 | |
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82 |
#Build a |
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82 | #Build a output name | |
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83 | 83 | filename = self.figure_filename_template.format( |
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84 | 84 | unique_key=unique_key, |
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85 | 85 | cell_index=cell_index, |
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86 | 86 | index=index, |
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87 | 87 | extension=out_type) |
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88 | 88 | |
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89 | 89 | #On the cell, make the figure available via |
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90 | 90 | # cell.outputs[i].svg_filename ... etc (svg in example) |
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91 | 91 | # Where |
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92 | 92 | # cell.outputs[i].svg contains the data |
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93 | 93 | if output_files_dir is not None: |
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94 | 94 | filename = os.path.join(output_files_dir, filename) |
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95 | 95 | out[out_type + '_filename'] = filename |
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96 | 96 | |
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97 | 97 | #In the resources, make the figure available via |
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98 | 98 | # resources['outputs']['filename'] = data |
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99 | 99 | resources['outputs'][filename] = data |
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100 | 100 | |
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101 | 101 | return cell, resources |
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