Mercurial > hg
annotate tests/md5sum.py @ 30632:1d0e4832e616
convert: parse perforce data on-demand
We are using read-only attributes that parse the perforce data on
demand. We are reading the data only once whenever an attribute is
requested and use it throughout the import process. This is equivalent
to the previous behavior, but we are avoiding reading from perforce when
we initialize the object, but instead run it during the actual import
process, when the first attribute is requested (usually getheads(), see
`convertcmd.convert`).
author | David Soria Parra <davidsp@fb.com> |
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date | Tue, 20 Dec 2016 09:23:50 -0800 |
parents | 8d1cdee372e6 |
children | 3a64ac39b893 |
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1 #!/usr/bin/env python |
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2 # |
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3 # Based on python's Tools/scripts/md5sum.py |
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4 # |
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5 # This software may be used and distributed according to the terms |
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6 # of the PYTHON SOFTWARE FOUNDATION LICENSE VERSION 2, which is |
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7 # GPL-compatible. |
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8 |
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9 from __future__ import absolute_import |
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10 |
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11 import os |
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12 import sys |
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13 |
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14 try: |
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15 import hashlib |
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16 md5 = hashlib.md5 |
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17 except ImportError: |
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18 import md5 |
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19 md5 = md5.md5 |
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20 |
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21 try: |
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22 import msvcrt |
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23 msvcrt.setmode(sys.stdout.fileno(), os.O_BINARY) |
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24 msvcrt.setmode(sys.stderr.fileno(), os.O_BINARY) |
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25 except ImportError: |
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26 pass |
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27 |
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28 for filename in sys.argv[1:]: |
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29 try: |
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30 fp = open(filename, 'rb') |
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31 except IOError as msg: |
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32 sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg)) |
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33 sys.exit(1) |
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34 |
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35 m = md5() |
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36 try: |
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37 for data in iter(lambda: fp.read(8192), ''): |
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38 m.update(data) |
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39 except IOError as msg: |
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40 sys.stderr.write('%s: I/O error: %s\n' % (filename, msg)) |
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41 sys.exit(1) |
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42 sys.stdout.write('%s %s\n' % (m.hexdigest(), filename)) |
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43 |
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44 sys.exit(0) |