import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/xre/nsWindowsWMain.cpp

@@ -0,0 +1,122 @@
+/* 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/. */
+
+// This file is a .cpp file meant to be included in nsBrowserApp.cpp and other
+// similar bootstrap code. It converts wide-character windows wmain into UTF-8
+// narrow-character strings.
+
+#ifndef XP_WIN
+#error This file only makes sense on Windows.
+#endif
+
+#include "nsUTF8Utils.h"
+#include <intrin.h>
+#include <math.h>
+
+#ifndef XRE_DONT_PROTECT_DLL_LOAD
+#include "nsSetDllDirectory.h"
+#endif
+
+#if defined(__GNUC__)
+#define XRE_DONT_SUPPORT_XPSP2
+#endif
+
+#ifdef __MINGW32__
+
+/* MingW currently does not implement a wide version of the
+   startup routines.  Workaround is to implement something like
+   it ourselves.  See bug 411826 */
+
+#include <shellapi.h>
+
+int wmain(int argc, WCHAR **argv);
+
+int main(int argc, char **argv)
+{
+  LPWSTR commandLine = GetCommandLineW();
+  int argcw = 0;
+  LPWSTR *argvw = CommandLineToArgvW(commandLine, &argcw);
+  if (!argvw)
+    return 127;
+
+  int result = wmain(argcw, argvw);
+  LocalFree(argvw);
+  return result;
+}
+#endif /* __MINGW32__ */
+
+#define main NS_internal_main
+
+#ifndef XRE_WANT_ENVIRON
+int main(int argc, char **argv);
+#else
+int main(int argc, char **argv, char **envp);
+#endif
+
+static char*
+AllocConvertUTF16toUTF8(char16ptr_t arg)
+{
+  // be generous... UTF16 units can expand up to 3 UTF8 units
+  int len = wcslen(arg);
+  char *s = new char[len * 3 + 1];
+  if (!s)
+    return nullptr;
+
+  ConvertUTF16toUTF8 convert(s);
+  convert.write(arg, len);
+  convert.write_terminator();
+  return s;
+}
+
+static void
+FreeAllocStrings(int argc, char **argv)
+{
+  while (argc) {
+    --argc;
+    delete [] argv[argc];
+  }
+
+  delete [] argv;
+}
+
+int wmain(int argc, WCHAR **argv)
+{
+#ifndef XRE_DONT_PROTECT_DLL_LOAD
+  mozilla::SanitizeEnvironmentVariables();
+  SetDllDirectoryW(L"");
+#endif
+
+  char **argvConverted = new char*[argc + 1];
+  if (!argvConverted)
+    return 127;
+
+  for (int i = 0; i < argc; ++i) {
+    argvConverted[i] = AllocConvertUTF16toUTF8(argv[i]);
+    if (!argvConverted[i]) {
+      return 127;
+    }
+  }
+  argvConverted[argc] = nullptr;
+
+  // need to save argvConverted copy for later deletion.
+  char **deleteUs = new char*[argc+1];
+  if (!deleteUs) {
+    FreeAllocStrings(argc, argvConverted);
+    return 127;
+  }
+  for (int i = 0; i < argc; i++)
+    deleteUs[i] = argvConverted[i];
+#ifndef XRE_WANT_ENVIRON
+  int result = main(argc, argvConverted);
+#else
+  // Force creation of the multibyte _environ variable.
+  getenv("PATH");
+  int result = main(argc, argvConverted, _environ);
+#endif
+
+  delete[] argvConverted;
+  FreeAllocStrings(argc, deleteUs);
+
+  return result;
+}