ROX-Lib2/python/rox/uri_handler.py

   1 """Look up or launch the handler for a URI.  URIs are in the form scheme:other
   2 and the handler for a given scheme is <Choices>.rox.sourceforge.net/URI/scheme
   3
   4 To open up a web page in the user's prefered web browser:
   5
   6 import rox.uri_handler
   7 try:
   8     pid=rox.uri_handler.launch('http://rox.sourceforge.net/')
   9 except:
  10     # Try firefox instead
  11     pid=os.spawnlp(os.P_NOWAIT, 'firefox', 'firefox',
  12                    'http://rox.sourceforge.net/')
  13
  14 os.waitpid(pid)
  15
  16 """
  17
  18 import os, urlparse
  19
  20 import rox
  21 from rox import basedir
  22
  23 def get(scheme):
  24     """Return the handler for URI's of the named scheme (e.g. http, file, ftp,
  25     etc.)  The handler for file is always rox, otherwise it obtained from
  26     the configuration directory rox.sourceforge.net/URI.  None is returned if
  27     no handler is defined.
  28
  29     The returned string may contain %s in which case it should be replaced
  30     with the URI, otherwise append the URI (after a space).
  31     """
  32
  33     if scheme=='file':
  34         return 'rox -U "%s"'
  35
  36     path=basedir.load_first_config('rox.sourceforge.net', 'URI', scheme)
  37     if not path:
  38         return
  39
  40     if rox.isappdir(path):
  41         path=os.path.join(path, 'AppRun')
  42
  43     return path
  44
  45 def launch(uri):
  46     """For a given URI pass it to the appropriate launcher.
  47     rox.uri_handler.get() is used to look up the launcher command which is
  48     executed.  The process id of the command is returned (see os.wait()), or
  49     None if no launcher is defined for that URI."""
  50     comp=urlparse.urlparse(uri)
  51     handler=get(comp[0])
  52     if not handler:
  53         return
  54     if '%s' in handler:
  55         cmd=handler % uri
  56     else:
  57         cmd=handler+' '+uri
  58     #print cmd
  59
  60     return os.spawnlp(os.P_NOWAIT, 'sh', 'sh', '-c', cmd)
  61
  62 if __name__=='__main__':
  63     print get('file')
  64     print get('http')
  65     print get('mailto')
  66     print get('svn+ssh')
  67
  68     launch('file:///tmp')
  69     launch('http://rox.sf.net/')
  70