cola/version.py

   1 # Copyright (c) David Aguilar
   2 """Provide git-cola's version number"""
   3
   4 import os
   5 import sys
   6
   7 if __name__ == '__main__':
   8     srcdir = os.path.dirname(os.path.dirname(__file__))
   9     sys.path.insert(1, srcdir)
  10
  11 from cola.git import git
  12 from cola.decorators import memoize
  13 from cola._version import VERSION
  14
  15
  16 # minimum version requirements
  17 _versions = {
  18     # git-diff learned --patience in 1.6.2
  19     # git-mergetool learned --no-prompt in 1.6.2
  20     # git-difftool moved out of contrib in git 1.6.3
  21     'git': '1.6.3',
  22     'python': '2.4',
  23     'pyqt': '4.4',
  24     'pyqt_qrunnable': '4.4',
  25     'diff-submodule': '1.6.6',
  26 }
  27
  28
  29 def get(key):
  30     """Returns an entry from the known versions table"""
  31     return _versions.get(key)
  32
  33
  34 def version():
  35     """Returns the current version"""
  36     return VERSION
  37
  38
  39 @memoize
  40 def check_version(min_ver, ver):
  41     """Check whether ver is greater or equal to min_ver
  42     """
  43     min_ver_list = version_to_list(min_ver)
  44     ver_list = version_to_list(ver)
  45     return min_ver_list <= ver_list
  46
  47
  48 @memoize
  49 def check(key, ver):
  50     """Checks if a version is greater than the known version for <what>"""
  51     return check_version(get(key), ver)
  52
  53
  54 def version_to_list(version):
  55     """Convert a version string to a list of numbers or strings
  56     """
  57     ver_list = []
  58     for p in version.split('.'):
  59         try:
  60             n = int(p)
  61         except ValueError:
  62             n = p
  63         ver_list.append(n)
  64     return ver_list
  65
  66
  67 @memoize
  68 def git_version_str():
  69     """Returns the current GIT version"""
  70     return git.version().strip()
  71
  72 @memoize
  73 def git_version():
  74     """Returns the current GIT version"""
  75     parts = git_version_str().split()
  76     if parts and len(parts) > 2:
  77         return parts[2]
  78     else:
  79         return 'v1.6.3' # minimum supported version
  80
  81
  82 if __name__ == '__main__':
  83     print(version())