python/rox/filer.py

   1 """An easy way to get ROX-Filer to do things."""
   2
   3 rox_filer_interface = "http://rox.sourceforge.net/2005/interfaces/ROX-Filer"
   4
   5 # Note: do a double-fork in case it's an old version of the filer
   6 # and doesn't automatically background itself.
   7 def _spawn(argv):
   8         from os import fork, _exit, execvp, waitpid
   9         child = fork()
  10         if child == 0:
  11                 # We are the child
  12                 child = fork()
  13                 if child == 0:
  14                         # Grandchild
  15                         try:
  16                                 execvp(argv[0], argv)
  17                         except:
  18                                 pass
  19                         print "Warning: exec('%s') failed!" % argv[0]
  20                         _exit(1)
  21                 elif child == -1:
  22                         print "Error: fork() failed!"
  23                 _exit(1)
  24         elif child == -1:
  25                 print "Error: fork() failed!"
  26         waitpid(child, 0)
  27
  28 def spawn_rox(args):
  29         """Run rox (either from PATH or through Zero Install) with the
  30         given arguments."""
  31         import os.path
  32         binpath = os.environ.get('PATH', '').split(':')
  33         # Try to run with '0launch'
  34         for bindir in binpath:
  35                 path = os.path.join(bindir, '0launch')
  36                 if os.path.isfile(path):
  37                         _spawn(('0launch', rox_filer_interface) + args)
  38                         return
  39         # Try to run 'rox'
  40         for bindir in binpath:
  41                 path = os.path.join(bindir, 'rox')
  42                 if os.path.isfile(path):
  43                         _spawn(('rox',) + args)
  44                         return
  45         # Try to run through the zero install filesystem
  46         if os.path.exists('/uri/0install/rox.sourceforge.net'):
  47                 _spawn(('/bin/0run', 'rox.sourceforge.net/rox 2002-01-01') + args)
  48         else:
  49                 print "Didn't find rox in PATH, and Zero Install not present. Trying 'rox' anyway..."
  50                 _spawn(('rox',) + args)
  51
  52 def open_dir(dir):
  53         "Open 'dir' in a new filer window."
  54         spawn_rox(('-d', dir))
  55
  56 def examine(file):
  57         """'file' may have changed (maybe you just created it, for example). Update
  58         any filer views of it."""
  59         spawn_rox(('-x', file))
  60
  61 def show_file(file):
  62         """Open a directory and draw the user's attention to this file. Useful for
  63         'Up' toolbar buttons that show where a file is saved."""
  64         spawn_rox(('-s', file))