workspace/ksplash/ksplashx/main.cpp

   1 /********************************************************************
   2
   3 Copyright (C) 2007 Lubos Lunak <l.lunak@kde.org>
   4
   5 Please see file LICENSE for the licensing terms of ksplashx as a whole.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 *********************************************************************/
  20
  21 #include "pixmap.h"
  22 #include "splash.h"
  23 #include <string.h>
  24 #include <unistd.h>
  25 #include <errno.h>
  26
  27 static void usage( char* name )
  28     {
  29     fprintf( stderr, "Usage: %s <theme> [--test] [--pid]\n", name );
  30     exit( 1 );
  31     }
  32
  33 int main( int argc, char* argv[] )
  34     {
  35     if( argc != 2 && argc != 3 && argc != 4 )
  36         usage( argv[ 0 ] );
  37     bool test = false;
  38     bool print_pid = false;
  39     for( int i = 2; // 1 is the theme
  40          i < argc;
  41          ++i )
  42         {
  43         if( strcmp( argv[ i ], "--test" ) == 0 )
  44             test = true;
  45         else if( strcmp( argv[ i ], "--pid" ) == 0 )
  46             print_pid = true;
  47         else
  48             usage( argv[ 0 ] );
  49         }
  50     const char* theme = argv[ 1 ];
  51     if( strcmp( theme, "DefaultFullscreen" ) == 0 )
  52         theme = "Default"; // these are now the same
  53     int parent_pipe = -1;
  54     if( print_pid )
  55         {
  56         int pipes[ 2 ];
  57         if( pipe( pipes ) < 0 )
  58             {
  59             perror( "pipe()" );
  60             abort();
  61             }
  62         pid_t pid = fork();
  63         if( pid < 0 )
  64             {
  65             perror( "fork()" );
  66             abort();
  67             }
  68         if( pid == 0 )
  69             { // child
  70             close( pipes[ 0 ] );
  71             parent_pipe = pipes[ 1 ];
  72             close( 0 ); // close stdin,stdout,stderr, otherwise startkde will block
  73             close( 1 );
  74             close( 2 );
  75             }
  76         else
  77             { // parent
  78             close( pipes[ 1 ] );
  79             char buf;
  80             while( read( pipes[ 0 ], &buf, 1 ) < 0
  81                 && ( errno == EINTR || errno == EAGAIN || errno == ECHILD ))
  82                 ;
  83             if( print_pid )
  84                 printf( "%d\n", pid );
  85             return 0;
  86             }
  87         }
  88     if( !openDisplay())
  89         return 2;
  90     if( test )
  91         XSynchronize( qt_xdisplay(), True );
  92     runSplash( theme, test, parent_pipe );
  93     closeDisplay();
  94     }