[Pkg-uml-pkgs] Bug#401314: A correction

[shaulka at 012.net.il]

  Due to redirections in the code, the determination of redirected 
should be done first.

--- rootstrap.orig   2006-12-02 13:02:06.000000000 +0200
+++ rootstrap.new        2006-12-02 18:16:23.000000000 +0200
@@ -59,12 +59,8 @@
     if opt in ('-s', '--image-size'):
         imagesize = long(arg)
     elif opt in ('-o',):
-               if not config.has_option('global', 'debug') or \
-                                               config.get('global', 'debug') != 'true':
-                               log = open(arg,"w")
-                               os.dup2(log.fileno(), sys.stdout.fileno())
-               else:
-                               print "Ignoring -o because the debug option is set"
+               log = open(arg,"w")
+               os.dup2(log.fileno(), sys.stdout.fileno())
     elif opt in ('-c', '--config'):
         umlargs_extra.append('rsconfig=%s' % os.path.abspath(os.path.expanduser(arg)))
     elif opt in ('-u', '--umlarg'):
@@ -117,6 +113,27 @@
     image.truncate(imagesize * 1048576L)
     image.close()

+backgroundRedirection = ''
+if not ( sys.stdin.isatty()  and  sys.stdout.isatty()  and  \
+              sys.stderr.isatty() ):
+    backgroundRedirection += 'Redirected'
+if sys.stdin.isatty()  and  \
+        os.tcgetpgrp(sys.stdin.fileno()) != os.getpgrp():
+    (block_on_read,not_to_be_written_to) = os.pipe()
+    os.dup2(block_on_read,sys.stdin.fileno())
+    backgroundRedirection += 'Background'
+if sys.stdout.isatty()  and  \
+        os.tcgetpgrp(sys.stdout.fileno()) != os.getpgrp():
+    sink = open('/dev/null','w')
+    os.dup2(sink.fileno(), sys.stdout.fileno())
+    if 'Background' not in backgroundRedirection:
+        backgroundRedirection += 'Background'
+if sys.stderr.isatty()  and  \
+        os.tcgetpgrp(sys.stderr.fileno()) != os.getpgrp()  and  \
+            'Background' not in backgroundRedirection:
+    backgroundRedirection += 'Background'
+umlargs.append('backgroundRedirection=%s' % backgroundRedirection)
+
 if os.spawnvpe(os.P_WAIT,umlargs[0], umlargs, os.environ) != 0:
     sys.stderr.write("UML exited with non-zero status, aborting\n")
     sys.exit(1)