toolkit/xre/nsCommandLineServiceMac.cpp

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla Communicator client code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Communications Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 1998
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Simon Fraser   <sfraser@netscape.com>
  24  *   Pierre Phaneuf <pp@ludusdesign.com>
  25  *   Mark Mentovai <mark@moxienet.com>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either the GNU General Public License Version 2 or later (the "GPL"), or
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  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #include "nsCommandLineServiceMac.h"
  42
  43 #include <CoreFoundation/CoreFoundation.h>
  44 #include <Carbon/Carbon.h>
  45
  46 namespace CommandLineServiceMac {
  47
  48 static const int kArgsGrowSize = 20;
  49
  50 static char** sArgs = NULL;
  51 static int sArgsAllocated = 0;
  52 static int sArgsUsed = 0;
  53
  54 void AddToCommandLine(const char* inArgText)
  55 {
  56   if (sArgsUsed >= sArgsAllocated - 1) {
  57     // realloc does not free the given pointer if allocation fails
  58     char **temp = static_cast<char**>(realloc(sArgs, (sArgsAllocated + kArgsGrowSize) * sizeof(char*)));
  59     if (!temp)
  60       return;
  61     sArgs = temp;
  62     sArgsAllocated += kArgsGrowSize;
  63   }
  64
  65   char *temp2 = strdup(inArgText);
  66   if (!temp2)
  67     return;
  68
  69   sArgs[sArgsUsed++] = temp2;
  70   sArgs[sArgsUsed] = NULL;
  71
  72   return;
  73 }
  74
  75 void SetupMacCommandLine(int& argc, char**& argv, PRBool forRestart)
  76 {
  77   sArgs = static_cast<char **>(malloc(kArgsGrowSize * sizeof(char*)));
  78   if (!sArgs)
  79     return;
  80   sArgsAllocated = kArgsGrowSize;
  81   sArgs[0] = NULL;
  82   sArgsUsed = 0;
  83
  84   // Copy args, stripping anything we don't want.
  85   for (int arg = 0; arg < argc; arg++) {
  86     char* flag = argv[arg];
  87     // Don't pass on the psn (Process Serial Number) flag from the OS.
  88     if (strncmp(flag, "-psn_", 5) != 0)
  89       AddToCommandLine(flag);
  90   }
  91
  92   if (forRestart) {
  93     // If the process will be relaunched, the child should be in the foreground
  94     // if the parent is in the foreground.  This will be communicated in a
  95     // command-line argument to the child.
  96     Boolean isForeground = false;
  97     ProcessSerialNumber psnSelf, psnFront;
  98     if (::GetCurrentProcess(&psnSelf) == noErr &&
  99         ::GetFrontProcess(&psnFront) == noErr &&
 100         ::SameProcess(&psnSelf, &psnFront, &isForeground) == noErr &&
 101         isForeground) {
 102       AddToCommandLine("-foreground");
 103     }
 104   }
 105
 106   argc = sArgsUsed;
 107   argv = sArgs;
 108 }
 109
 110 } // namespace CommandLineServiceMac