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@@ -1,78 +1,81 b'' | |||
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1 | 1 | """Module containing a transformer that converts outputs in the notebook from |
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2 | 2 | one format to another. |
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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 os |
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17 | import sys | |
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18 | import subprocess | |
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19 | ||
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17 | 20 | from IPython.utils.tempdir import TemporaryDirectory |
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18 | 21 | |
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19 | 22 | from .convertfigures import ConvertFiguresTransformer |
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20 | 23 | |
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21 | 24 | |
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22 | 25 | #----------------------------------------------------------------------------- |
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23 | 26 | # Constants |
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24 | 27 | #----------------------------------------------------------------------------- |
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25 | 28 | |
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26 | 29 | INKSCAPE_COMMAND = 'inkscape --without-gui --export-pdf="{to_filename}" "{from_filename}"' |
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27 | 30 | INKSCAPE_OSX_COMMAND = '/Applications/Inkscape.app/Contents/Resources/bin/inkscape --without-gui --export-pdf="{to_filename}" "{from_filename}"' |
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28 | 31 | |
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29 | 32 | |
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30 | 33 | #----------------------------------------------------------------------------- |
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31 | 34 | # Classes |
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32 | 35 | #----------------------------------------------------------------------------- |
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33 | 36 | |
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34 | 37 | class ConvertSvgTransformer(ConvertFiguresTransformer): |
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35 | 38 | """ |
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36 | 39 | Converts all of the outputs in a notebook from one format to another. |
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37 | 40 | """ |
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38 | 41 | |
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39 | 42 | |
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40 | 43 | def __init__(self, **kw): |
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41 | 44 | """ |
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42 | 45 | Constructor |
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43 | 46 | """ |
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44 | 47 | super(ConvertSvgTransformer, self).__init__(['svg'], 'pdf', **kw) |
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45 | 48 | |
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46 | 49 | |
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47 | 50 | def convert_figure(self, data_format, data): |
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48 | 51 | """ |
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49 | 52 | Convert a single Svg figure. Returns converted data. |
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50 | 53 | """ |
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51 | 54 | |
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52 | 55 | #Work in a temporary directory |
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53 | 56 | with TemporaryDirectory() as tmpdir: |
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54 | 57 | |
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55 | 58 | #Write fig to temp file |
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56 | 59 | input_filename = os.path.join(tmpdir, 'figure.' + data_format) |
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57 | 60 | with open(input_filename, 'w') as f: |
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58 | 61 | f.write(data) |
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59 | 62 | |
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60 | 63 | #Determine command (different on Mac OSX) |
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61 | 64 | command = INKSCAPE_COMMAND |
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62 | 65 | if sys.platform == 'darwin': |
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63 | 66 | command = INKSCAPE_OSX_COMMAND |
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64 | 67 | |
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65 | 68 | #Call conversion application |
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66 | 69 | output_filename = os.path.join(tmpdir, 'figure.pdf') |
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67 | 70 | shell = command.format(from_filename=input_filename, |
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68 | 71 | to_filename=output_filename) |
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69 | 72 | subprocess.call(shell, shell=True) #Shell=True okay since input is trusted. |
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70 | 73 | |
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71 | 74 | #Read output from drive |
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72 | 75 | if os.path.isfile(output_filename): |
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73 | 76 | with open(output_filename, 'rb') as f: |
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74 | 77 | return f.read().encode("base64") #PDF is a nb supported binary |
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75 | 78 | #data type, so base64 encode. |
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76 | 79 | else: |
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77 | 80 | return TypeError("Inkscape svg to png conversion failed") |
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78 | 81 | #TODO: ERROR: which notebook crashed exporter |
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