Import XULRunner and make it produce the generic stub

application/xulrunner/app/nsXULRunnerApp.cpp

@@ -0,0 +1,294 @@
+/* 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 "nsXULAppAPI.h"
+#include "nsXPCOMGlue.h"
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef XP_WIN
+#include <windows.h>
+#if defined(_MSC_VER) && _MSC_VER < 1900
+#define snprintf _snprintf
+#endif
+#define strcasecmp _stricmp
+#endif
+
+#include "nsAppRunner.h"
+#include "nsIFile.h"
+#include "nsCOMPtr.h"
+#include "nsMemory.h"
+#include "nsCRTGlue.h"
+#include "nsStringAPI.h"
+#include "nsServiceManagerUtils.h"
+#include "plstr.h"
+#include "prprf.h"
+#include "prenv.h"
+#include "nsINIParser.h"
+
+#ifdef XP_WIN
+#define XRE_DONT_SUPPORT_XPSP2 // See https://bugzil.la/1023941#c32
+#include "nsWindowsWMain.cpp"
+#endif
+
+#include "BinaryPath.h"
+
+#include "nsXPCOMPrivate.h" // for MAXPATHLEN and XPCOM_DLL
+
+using namespace mozilla;
+
+/**
+ * Output a string to the user.  This method is really only meant to be used to
+ * output last-ditch error messages designed for developers NOT END USERS.
+ *
+ * @param isError
+ *        Pass true to indicate severe errors.
+ * @param fmt
+ *        printf-style format string followed by arguments.
+ */
+static void Output(bool isError, const char *fmt, ... )
+{
+  va_list ap;
+  va_start(ap, fmt);
+
+#if (defined(XP_WIN) && !MOZ_WINCONSOLE)
+  wchar_t msg[2048];
+  _vsnwprintf(msg, sizeof(msg)/sizeof(msg[0]), NS_ConvertUTF8toUTF16(fmt).get(), ap);
+
+  UINT flags = MB_OK;
+  if (isError)
+    flags |= MB_ICONERROR;
+  else
+    flags |= MB_ICONINFORMATION;
+    
+  MessageBoxW(nullptr, msg, L"XULRunner", flags);
+#else
+  vfprintf(stderr, fmt, ap);
+#endif
+
+  va_end(ap);
+}
+
+/**
+ * Return true if |arg| matches the given argument name.
+ */
+static bool IsArg(const char* arg, const char* s)
+{
+  if (*arg == '-')
+  {
+    if (*++arg == '-')
+      ++arg;
+    return !strcasecmp(arg, s);
+  }
+
+#if defined(XP_WIN)
+  if (*arg == '/')
+    return !strcasecmp(++arg, s);
+#endif
+
+  return false;
+}
+
+static nsresult
+GetGREVersion(const char *argv0,
+              nsACString *aMilestone,
+              nsACString *aVersion)
+{
+  if (aMilestone)
+    aMilestone->AssignLiteral("<Error>");
+  if (aVersion)
+    aVersion->AssignLiteral("<Error>");
+
+  nsCOMPtr<nsIFile> iniFile;
+  nsresult rv = BinaryPath::GetFile(argv0, getter_AddRefs(iniFile));
+  if (NS_FAILED(rv))
+    return rv;
+
+  iniFile->SetNativeLeafName(NS_LITERAL_CSTRING("platform.ini"));
+
+  nsINIParser parser;
+  rv = parser.Init(iniFile);
+  if (NS_FAILED(rv))
+    return rv;
+
+  if (aMilestone) {
+    rv = parser.GetString("Build", "Milestone", *aMilestone);
+    if (NS_FAILED(rv))
+      return rv;
+  }
+  if (aVersion) {
+    rv = parser.GetString("Build", "BuildID", *aVersion);
+    if (NS_FAILED(rv))
+      return rv;
+  }
+  return NS_OK;
+}
+
+static void Usage(const char *argv0)
+{
+    nsAutoCString milestone;
+    GetGREVersion(argv0, &milestone, nullptr);
+
+    // display additional information (XXX make localizable?)
+    Output(false,
+           "Mozilla XULRunner %s\n\n"
+           "Usage: " XULRUNNER_PROGNAME " [OPTIONS]\n"
+           "       " XULRUNNER_PROGNAME " APP-FILE [APP-OPTIONS...]\n"
+           "\n"
+           "OPTIONS\n"
+           "      --app                  specify APP-FILE (optional)\n"
+           "  -h, --help                 show this message\n"
+           "  -v, --version              show version\n"
+           "  --gre-version              print the GRE version string on stdout\n"
+           "\n"
+           "APP-FILE\n"
+           "  Application initialization file.\n"
+           "\n"
+           "APP-OPTIONS\n"
+           "  Application specific options.\n",
+           milestone.get());
+}
+
+XRE_GetFileFromPathType XRE_GetFileFromPath;
+XRE_CreateAppDataType XRE_CreateAppData;
+XRE_FreeAppDataType XRE_FreeAppData;
+XRE_mainType XRE_main;
+
+static const nsDynamicFunctionLoad kXULFuncs[] = {
+    { "XRE_GetFileFromPath", (NSFuncPtr*) &XRE_GetFileFromPath },
+    { "XRE_CreateAppData", (NSFuncPtr*) &XRE_CreateAppData },
+    { "XRE_FreeAppData", (NSFuncPtr*) &XRE_FreeAppData },
+    { "XRE_main", (NSFuncPtr*) &XRE_main },
+    { nullptr, nullptr }
+};
+
+class AutoAppData
+{
+public:
+  AutoAppData(nsIFile* aINIFile) : mAppData(nullptr) {
+    nsresult rv = XRE_CreateAppData(aINIFile, &mAppData);
+    if (NS_FAILED(rv))
+      mAppData = nullptr;
+  }
+  ~AutoAppData() {
+    if (mAppData)
+      XRE_FreeAppData(mAppData);
+  }
+
+  operator nsXREAppData*() const { return mAppData; }
+  nsXREAppData* operator -> () const { return mAppData; }
+
+private:
+  nsXREAppData* mAppData;
+};
+
+int main(int argc, char* argv[])
+{
+  char exePath[MAXPATHLEN];
+  nsresult rv = mozilla::BinaryPath::Get(argv[0], exePath);
+  if (NS_FAILED(rv)) {
+    Output(true, "Couldn't calculate the application directory.\n");
+    return 255;
+  }
+
+  char *lastSlash = strrchr(exePath, XPCOM_FILE_PATH_SEPARATOR[0]);
+  if (!lastSlash || (size_t(lastSlash - exePath) > MAXPATHLEN - sizeof(XPCOM_DLL) - 1))
+    return 255;
+
+  strcpy(++lastSlash, XPCOM_DLL);
+
+  rv = XPCOMGlueStartup(exePath);
+  if (NS_FAILED(rv)) {
+    Output(true, "Couldn't load XPCOM.\n");
+    return 255;
+  }
+
+  if (argc > 1 && (IsArg(argv[1], "h") ||
+                   IsArg(argv[1], "help") ||
+                   IsArg(argv[1], "?")))
+  {
+    Usage(argv[0]);
+    return 0;
+  }
+
+  if (argc == 2 && (IsArg(argv[1], "v") || IsArg(argv[1], "version")))
+  {
+    nsAutoCString milestone;
+    nsAutoCString version;
+    GetGREVersion(argv[0], &milestone, &version);
+    Output(false, "Mozilla XULRunner %s - %s\n",
+           milestone.get(), version.get());
+    return 0;
+  }
+
+  rv = XPCOMGlueLoadXULFunctions(kXULFuncs);
+  if (NS_FAILED(rv)) {
+    Output(true, "Couldn't load XRE functions.\n");
+    return 255;
+  }
+
+  if (argc > 1) {
+    nsAutoCString milestone;
+    rv = GetGREVersion(argv[0], &milestone, nullptr);
+    if (NS_FAILED(rv))
+      return 2;
+
+    if (IsArg(argv[1], "gre-version")) {
+      if (argc != 2) {
+        Usage(argv[0]);
+        return 1;
+      }
+
+      printf("%s\n", milestone.get());
+      return 0;
+    }
+
+    if (IsArg(argv[1], "install-app")) {
+      Output(true, "--install-app support has been removed.  Use 'python install-app.py' instead.\n");
+      return 1;
+    }
+  }
+
+  const char *appDataFile = getenv("XUL_APP_FILE");
+
+  if (!(appDataFile && *appDataFile)) {
+    if (argc < 2) {
+      Usage(argv[0]);
+      return 1;
+    }
+
+    if (IsArg(argv[1], "app")) {
+      if (argc == 2) {
+        Usage(argv[0]);
+        return 1;
+      }
+      argv[1] = argv[0];
+      ++argv;
+      --argc;
+    }
+
+    appDataFile = argv[1];
+    argv[1] = argv[0];
+    ++argv;
+    --argc;
+
+    static char kAppEnv[MAXPATHLEN];
+    snprintf(kAppEnv, MAXPATHLEN, "XUL_APP_FILE=%s", appDataFile);
+    putenv(kAppEnv);
+  }
+
+  nsCOMPtr<nsIFile> appDataLF;
+  rv = XRE_GetFileFromPath(appDataFile, getter_AddRefs(appDataLF));
+  if (NS_FAILED(rv)) {
+    Output(true, "Error: unrecognized application.ini path.\n");
+    return 2;
+  }
+
+  AutoAppData appData(appDataLF);
+  if (!appData) {
+    Output(true, "Error: couldn't parse application.ini.\n");
+    return 2;
+  }
+
+  return XRE_main(argc, argv, appData, 0);
+}