cmdline/apt-mark

   1 #!/usr/bin/python
   2
   3 from optparse import OptionParser
   4
   5 try:
   6     import apt_pkg
   7 except ImportError:
   8     print "Error importing apt_pkg, is python-apt installed?"
   9
  10 import sys
  11 import os.path
  12
  13 actions = { "markauto" : 1,
  14             "unmarkauto": 0
  15           }
  16
  17 if __name__ == "__main__":
  18     apt_pkg.init()
  19
  20     # option parsing
  21     parser = OptionParser()
  22     parser.usage = "%prog [options] {markauto|unmarkauto} packages..."
  23     parser.add_option("-f", "--file", action="store", type="string",
  24                       dest="filename",
  25                       help="read/write a different file")
  26     parser.add_option("-v", "--verbose",
  27                       action="store_true", dest="verbose", default=False,
  28                       help="print verbose status messages to stdout")
  29     (options, args) = parser.parse_args()
  30     if len(args) < 2:
  31         parser.error("not enough argument")
  32
  33     # get pkgs to change
  34     if args[0] not in actions.keys():
  35         parser.error("first argument must be 'markauto' or 'unmarkauto'")
  36     pkgs = args[1:]
  37     action = actions[args[0]]
  38
  39     # get the state-file
  40     if not options.filename:
  41         STATE_FILE = apt_pkg.Config.FindDir("Dir::State") + "extended_states"
  42     else:
  43         STATE_FILE=options.state_file
  44
  45     # open the statefile
  46     if os.path.exists(STATE_FILE):
  47         tagfile = apt_pkg.ParseTagFile(open(STATE_FILE))
  48         outfile = open(STATE_FILE+".tmp","w")
  49         while tagfile.Step():
  50             pkgname = tagfile.Section.get("Package")
  51             autoInst = tagfile.Section.get("Auto-Installed")
  52             if pkgname in pkgs:
  53                 if options.verbose:
  54                     print "changing %s to %s" % (pkgname,action)
  55                 newsec = apt_pkg.RewriteSection(tagfile.Section,
  56                                        [],
  57                                        [ ("Auto-Installed",str(action)) ]
  58                                        )
  59                 outfile.write(newsec+"\n")
  60             else:
  61                 outfile.write(str(tagfile.Section)+"\n")
  62         # all done, rename the tmpfile
  63         os.chmod(outfile.name, 0644)
  64         os.rename(outfile.name, STATE_FILE)