micng/utils/pkgmanagers/__init__.py

   1 #!/usr/bin/python
   2
   3 import os
   4 from micng.utils.errors import *
   5
   6 class pkgManager:
   7     def __init__(self):
   8         self.managers = {}
   9         self.default_pkg_manager = None
  10
  11     def register_pkg_manager(self, name, manager):
  12 #        print "Registering package manager: %s" % name
  13         if not self.managers.has_key(name):
  14             self.managers[name] = manager
  15
  16     def unregister_pkg_manager(self, name):
  17         if self.managers.has_key(name):
  18             del self.managers[name]
  19
  20     def set_default_pkg_manager(self, name):
  21         if self.managers.has_key(name):
  22             self.default_pkg_manager = self.managers[name]
  23             print "Use package manager %s" % name
  24
  25     def get_default_pkg_manager(self):
  26         if self.default_pkg_manager:
  27             return self.default_pkg_manager
  28         else:
  29             if self.managers.has_key("zypp"):
  30                 print "Use package manager zypp"
  31                 return self.managers["zypp"]
  32             elif self.managers.has_key("yum"):
  33                 print "Use package manager yum"
  34                 return self.managers["yum"]
  35             else:
  36                 keys = self.managers.keys()
  37                 if keys:
  38                     print "Use package manager %s" % keys[0]
  39                     return self.managers[keys[0]]
  40                 else:
  41                     return None
  42
  43     def load_pkg_managers(self):
  44         mydir = os.path.dirname(os.path.realpath(__file__))
  45         for file in os.listdir(mydir):
  46             if os.path.isfile(mydir + "/" + file) and file.endswith(".py") and file != "__init__.py":
  47                 pkgmgrmod = file[:file.rfind(".py")]
  48                 try:
  49                     exec("import micng.utils.pkgmanagers.%s as %s " % (pkgmgrmod, pkgmgrmod))
  50                     exec("pkgmgr = %s._pkgmgr" % pkgmgrmod)
  51                     self.register_pkg_manager(pkgmgr[0], pkgmgr[1])
  52                 except:
  53                     continue
  54         if not self.managers.keys():
  55             raise CreatorError("No packag manager available")