annotate mercurial/version.py @ 6034:83633602e2c5

qinit -c: add ^\.hg and ^\.mq to .hgignore
author Alexis S. L. Carvalho <alexis@cecm.usp.br>
date Fri, 08 Feb 2008 18:07:55 -0200
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children 6482d34974ac
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1 # Copyright (C) 2005, 2006 by Intevation GmbH
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2 # Author(s):
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3 # Thomas Arendsen Hein <thomas@intevation.de>
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4 #
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5 # This program is free software under the GNU GPL (>=v2)
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6 # Read the file COPYING coming with the software for details.
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7
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8 """
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9 Mercurial version
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10 """
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11
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12 import os
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13 import os.path
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14 import re
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15 import time
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16 import util
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18 unknown_version = 'unknown'
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19 remembered_version = False
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21 def get_version(doreload=False):
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22 """Return version information if available."""
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23 try:
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24 import mercurial.__version__
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25 if doreload:
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26 reload(mercurial.__version__)
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27 version = mercurial.__version__.version
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28 except ImportError:
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29 version = unknown_version
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30 return version
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31
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32 def write_version(version):
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33 """Overwrite version file."""
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34 if version == get_version():
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35 return
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36 directory = os.path.dirname(__file__)
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37 for suffix in ['py', 'pyc', 'pyo']:
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38 try:
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39 os.unlink(os.path.join(directory, '__version__.%s' % suffix))
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40 except OSError:
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41 pass
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42 f = open(os.path.join(directory, '__version__.py'), 'w')
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43 f.write("# This file is auto-generated.\n")
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44 f.write("version = %r\n" % version)
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45 f.close()
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46 # reload the file we've just written
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47 get_version(True)
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49 def remember_version(version=None):
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50 """Store version information."""
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51 global remembered_version
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52 if not version and os.path.isdir(".hg"):
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53 f = util.popen("hg identify") # use real hg installation
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54 ident = f.read()[:-1]
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55 if not f.close() and ident:
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56 ids = ident.split(' ', 1)
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57 version = ids.pop(0)
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58 if version[-1] == '+':
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59 version = version[:-1]
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60 modified = True
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61 else:
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62 modified = False
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63 if version.isalnum() and ids:
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64 for tag in ids[0].split('/'):
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65 # is a tag is suitable as a version number?
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66 if re.match(r'^(\d+\.)+[\w.-]+$', tag):
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67 version = tag
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68 break
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69 if modified:
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70 version += time.strftime('+%Y%m%d')
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71 if version:
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72 remembered_version = True
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73 write_version(version)
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75 def forget_version():
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76 """Remove version information."""
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77 if remembered_version:
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78 write_version(unknown_version)
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