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1 # Copyright (c) 2010 Google Inc. All rights reserved. |
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2 # |
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3 # Redistribution and use in source and binary forms, with or without |
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4 # modification, are permitted provided that the following conditions are |
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5 # met: |
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6 # |
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7 # * Redistributions of source code must retain the above copyright |
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8 # notice, this list of conditions and the following disclaimer. |
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9 # * Redistributions in binary form must reproduce the above |
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10 # copyright notice, this list of conditions and the following disclaimer |
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11 # in the documentation and/or other materials provided with the |
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12 # distribution. |
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13 # * Neither the name of Google Inc. nor the names of its |
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14 # contributors may be used to endorse or promote products derived from |
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15 # this software without specific prior written permission. |
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16 # |
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17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 |
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29 import os |
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30 import tempfile |
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31 |
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32 |
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33 class PrettyPatch(object): |
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34 # FIXME: PrettyPatch should not require checkout_root. |
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35 def __init__(self, executive, checkout_root): |
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36 self._executive = executive |
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37 self._checkout_root = checkout_root |
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38 |
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39 def pretty_diff_file(self, diff): |
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40 # Diffs can contain multiple text files of different encodings |
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41 # so we always deal with them as byte arrays, not unicode strings. |
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42 assert(isinstance(diff, str)) |
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43 pretty_diff = self.pretty_diff(diff) |
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44 diff_file = tempfile.NamedTemporaryFile(suffix=".html") |
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45 diff_file.write(pretty_diff) |
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46 diff_file.flush() |
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47 return diff_file |
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48 |
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49 def pretty_diff(self, diff): |
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50 # pretify.rb will hang forever if given no input. |
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51 # Avoid the hang by returning an empty string. |
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52 if not diff: |
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53 return "" |
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54 |
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55 pretty_patch_path = os.path.join(self._checkout_root, |
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56 "BugsSite", "PrettyPatch") |
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57 prettify_path = os.path.join(pretty_patch_path, "prettify.rb") |
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58 args = [ |
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59 "ruby", |
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60 "-I", |
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61 pretty_patch_path, |
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62 prettify_path, |
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63 ] |
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64 # PrettyPatch does not modify the encoding of the diff output |
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65 # so we can't expect it to be utf-8. |
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66 return self._executive.run_command(args, input=diff, decode_output=False) |