cola/version.py

   1 # Copyright (c) 2012 David Aguilar
   2 """Provide cola's version number"""
   3
   4 # The current git-cola version
   5 _default_version = '1.7.3'
   6
   7
   8 import os
   9 import sys
  10
  11 if __name__ == '__main__':
  12     srcdir = os.path.dirname(os.path.dirname(__file__))
  13     sys.path.insert(1, srcdir)
  14
  15 from cola.git import git
  16 from cola.decorators import memoize
  17
  18 # minimum version requirements
  19 _versions = {
  20     # git-diff learned --patience in 1.6.2
  21     # git-mergetool learned --no-prompt in 1.6.2
  22     # git-difftool moved out of contrib in git 1.6.3
  23     'git': '1.6.3',
  24     'python': '2.4',
  25     'pyqt': '4.4',
  26     'pyqt_qrunnable': '4.4',
  27     'diff-submodule': '1.6.6',
  28 }
  29
  30
  31 def get(key):
  32     """Returns an entry from the known versions table"""
  33     return _versions.get(key)
  34
  35
  36 def version():
  37     """Returns the current version"""
  38     return _default_version
  39
  40
  41 @memoize
  42 def check_version(min_ver, ver):
  43     """Check whether ver is greater or equal to min_ver
  44     """
  45     min_ver_list = version_to_list(min_ver)
  46     ver_list = version_to_list(ver)
  47     return min_ver_list <= ver_list
  48
  49
  50 @memoize
  51 def check(key, ver):
  52     """Checks if a version is greater than the known version for <what>"""
  53     return check_version(get(key), ver)
  54
  55
  56 def version_to_list(version):
  57     """Convert a version string to a list of numbers or strings
  58     """
  59     ver_list = []
  60     for p in version.split('.'):
  61         try:
  62             n = int(p)
  63         except ValueError:
  64             n = p
  65         ver_list.append(n)
  66     return ver_list
  67
  68
  69 @memoize
  70 def git_version_str():
  71     """Returns the current GIT version"""
  72     return git.version()
  73
  74 @memoize
  75 def git_version():
  76     """Returns the current GIT version"""
  77     return git_version_str().split()[-1]
  78
  79
  80 if __name__ == '__main__':
  81     print(version())