Mercurial > hg
annotate contrib/check-py3-compat.py @ 27494:cc87d2c01ea5
contrib: add execute bit for check-py3-compat.py
author | timeless <timeless@mozdev.org> |
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date | Tue, 22 Dec 2015 07:58:21 +0000 |
parents | 35e69407b1ac |
children | ae522fb493d4 |
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1 #!/usr/bin/env python |
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2 # |
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3 # check-py3-compat - check Python 3 compatibility of Mercurial files |
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4 # |
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5 # Copyright 2015 Gregory Szorc <gregory.szorc@gmail.com> |
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6 # |
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7 # This software may be used and distributed according to the terms of the |
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8 # GNU General Public License version 2 or any later version. |
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9 |
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10 from __future__ import absolute_import, print_function |
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11 |
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12 import ast |
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13 import sys |
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14 |
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15 def check_compat(f): |
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16 """Check Python 3 compatibility for a file.""" |
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17 with open(f, 'rb') as fh: |
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18 content = fh.read() |
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19 |
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20 # Ignore empty files. |
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21 if not content.strip(): |
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22 return |
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23 |
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24 root = ast.parse(content) |
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25 futures = set() |
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26 haveprint = False |
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27 for node in ast.walk(root): |
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28 if isinstance(node, ast.ImportFrom): |
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29 if node.module == '__future__': |
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30 futures |= set(n.name for n in node.names) |
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31 elif isinstance(node, ast.Print): |
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32 haveprint = True |
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33 |
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34 if 'absolute_import' not in futures: |
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35 print('%s not using absolute_import' % f) |
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36 if haveprint and 'print_function' not in futures: |
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37 print('%s requires print_function' % f) |
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38 |
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39 if __name__ == '__main__': |
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40 for f in sys.argv[1:]: |
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41 check_compat(f) |
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42 |
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43 sys.exit(0) |