gecko/toolkit/xre/nsCommandLineServiceMac.cpp

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
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 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 *
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 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
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 * The Original Code is Mozilla Communicator client code.
 *
 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
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 * Contributor(s):
 *   Simon Fraser   <sfraser@netscape.com>
 *   Pierre Phaneuf <pp@ludusdesign.com>
 *   Mark Mentovai <mark@moxienet.com>
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#include "nsCommandLineServiceMac.h"

#include <CoreFoundation/CoreFoundation.h>
#include <Carbon/Carbon.h>

namespace CommandLineServiceMac {

static const int kArgsGrowSize = 20;

static char** sArgs = NULL;
static int sArgsAllocated = 0;
static int sArgsUsed = 0;

void AddToCommandLine(const char* inArgText)
{
  if (sArgsUsed >= sArgsAllocated - 1) {
    // realloc does not free the given pointer if allocation fails
    char **temp = static_cast<char**>(realloc(sArgs, (sArgsAllocated + kArgsGrowSize) * sizeof(char*)));
    if (!temp)
      return;
    sArgs = temp;
    sArgsAllocated += kArgsGrowSize;
  }

  char *temp2 = strdup(inArgText);
  if (!temp2)
    return;

  sArgs[sArgsUsed++] = temp2;
  sArgs[sArgsUsed] = NULL;

  return;
}

void SetupMacCommandLine(int& argc, char**& argv, PRBool forRestart)
{
  sArgs = static_cast<char **>(malloc(kArgsGrowSize * sizeof(char*)));
  if (!sArgs)
    return;
  sArgsAllocated = kArgsGrowSize;
  sArgs[0] = NULL;
  sArgsUsed = 0;

  // Copy args, stripping anything we don't want.
  for (int arg = 0; arg < argc; arg++) {
    char* flag = argv[arg];
    // Don't pass on the psn (Process Serial Number) flag from the OS.
    if (strncmp(flag, "-psn_", 5) != 0)
      AddToCommandLine(flag);
  }

  if (forRestart) {
    // If the process will be relaunched, the child should be in the foreground
    // if the parent is in the foreground.  This will be communicated in a
    // command-line argument to the child.
    Boolean isForeground = false;
    ProcessSerialNumber psnSelf, psnFront;
    if (::GetCurrentProcess(&psnSelf) == noErr &&
        ::GetFrontProcess(&psnFront) == noErr &&
        ::SameProcess(&psnSelf, &psnFront, &isForeground) == noErr &&
        isForeground) {
      AddToCommandLine("-foreground");
    }
  }

  argc = sArgsUsed;
  argv = sArgs;
}

} // namespace CommandLineServiceMac