python/rox/filer.py

   1 """An easy way to get ROX-Filer to do things."""
   2
   3 # Note: do a double-fork in case it's an old version of the filer
   4 # and doesn't automatically background itself.
   5 def _spawn(argv):
   6         from os import fork, _exit, execvp, waitpid
   7         child = fork()
   8         if child == 0:
   9                 # We are the child
  10                 child = fork()
  11                 if child == 0:
  12                         # Grandchild
  13                         try:
  14                                 execvp(argv[0], argv)
  15                         except:
  16                                 pass
  17                         print "Warning: exec('%s') failed!" % argv[0]
  18                         _exit(1)
  19                 elif child == -1:
  20                         print "Error: fork() failed!"
  21                 _exit(1)
  22         elif child == -1:
  23                 print "Error: fork() failed!"
  24         waitpid(child, 0)
  25
  26 def spawn_rox(args):
  27         """Run rox (either from PATH or through Zero Install) with the
  28         given arguments."""
  29         import os.path
  30         for bindir in os.environ.get('PATH', '').split(':'):
  31                 path = os.path.join(bindir, 'rox')
  32                 if os.path.isfile(path):
  33                         _spawn(('rox',) + args)
  34                         return
  35         if os.path.exists('/uri/0install/rox.sourceforge.net'):
  36                 _spawn(('/bin/0run', 'rox.sourceforge.net/rox 2002-01-01') + args)
  37         else:
  38                 print "Didn't find rox in PATH, and Zero Install not present. Trying 'rox' anyway..."
  39                 _spawn(('rox',) + args)
  40
  41 def open_dir(dir):
  42         "Open 'dir' in a new filer window."
  43         spawn_rox(('-d', dir))
  44
  45 def examine(file):
  46         """'file' may have changed (maybe you just created it, for example). Update
  47         any filer views of it."""
  48         spawn_rox(('-x', file))
  49
  50 def show_file(file):
  51         """Open a directory and draw the user's attention to this file. Useful for
  52         'Up' toolbar buttons that show where a file is saved."""
  53         spawn_rox(('-s', file))