import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/xre/nsCommandLineServiceMac.cpp

@@ -0,0 +1,102 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsCommandLineServiceMac.h"
+#include "MacApplicationDelegate.h"
+
+#include <CoreFoundation/CoreFoundation.h>
+#include <Carbon/Carbon.h>
+
+namespace CommandLineServiceMac {
+
+static const int kArgsGrowSize = 20;
+
+static char** sArgs = nullptr;
+static int sArgsAllocated = 0;
+static int sArgsUsed = 0;
+
+static bool sBuildingCommandLine = false;
+
+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] = nullptr;
+
+  return;
+}
+
+void SetupMacCommandLine(int& argc, char**& argv, bool forRestart)
+{
+  sArgs = static_cast<char **>(malloc(kArgsGrowSize * sizeof(char*)));
+  if (!sArgs)
+    return;
+  sArgsAllocated = kArgsGrowSize;
+  sArgs[0] = nullptr;
+  sArgsUsed = 0;
+
+  sBuildingCommandLine = true;
+
+  // 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, or
+    // the "-foreground" flag since it will be set below if necessary.
+    if (strncmp(flag, "-psn_", 5) != 0 &&
+        strncmp(flag, "-foreground", 11) != 0)
+      AddToCommandLine(flag);
+  }
+
+  // Force processing of any pending Apple GetURL Events while we're building
+  // the command line. The handlers will append to the command line rather than
+  // act directly so there is no chance we'll process them during a XUL window
+  // load and accidentally open unnecessary windows and home pages.
+  ProcessPendingGetURLAppleEvents();
+
+  // 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.
+  if (forRestart) {
+    Boolean isForeground = false;
+    ProcessSerialNumber psnSelf, psnFront;
+    if (::GetCurrentProcess(&psnSelf) == noErr &&
+        ::GetFrontProcess(&psnFront) == noErr &&
+        ::SameProcess(&psnSelf, &psnFront, &isForeground) == noErr &&
+        isForeground) {
+      AddToCommandLine("-foreground");
+    }
+  }
+
+  sBuildingCommandLine = false;
+
+  argc = sArgsUsed;
+  argv = sArgs;
+}
+
+bool AddURLToCurrentCommandLine(const char* aURL)
+{
+  if (!sBuildingCommandLine) {
+    return false;
+  }
+
+  AddToCommandLine("-url");
+  AddToCommandLine(aURL);
+
+  return true;
+}
+
+} // namespace CommandLineServiceMac