C++ FilePath::DirName方法代码示例

void GetPathToBinary(FilePath& exePath)
{
#if defined(OS_WIN)
  exePath = FilePath::FromWStringHack(CommandLine::ForCurrentProcess()->program());
  exePath = exePath.DirName();
  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
#elif defined(OS_POSIX)
  if (ShouldHaveDirectoryService()) {
    nsCOMPtr<nsIProperties> directoryService(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID));
    NS_ASSERTION(directoryService, "Expected XPCOM to be available");
    if (directoryService) {
      nsCOMPtr<nsIFile> greDir;
      nsresult rv = directoryService->Get(NS_GRE_DIR, NS_GET_IID(nsIFile), getter_AddRefs(greDir));
      if (NS_SUCCEEDED(rv)) {
        nsCString path;
        greDir->GetNativePath(path);
        exePath = FilePath(path.get());
#ifdef MOZ_WIDGET_COCOA
        // We need to use an App Bundle on OS X so that we can hide
        // the dock icon. See Bug 557225.
        exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_BUNDLE);
#endif
      }
    }
  }

  if (exePath.empty()) {
    exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
    exePath = exePath.DirName();
  }

  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
#endif
}

//static
void
GeckoChildProcessHost::GetPathToBinary(FilePath& exePath)
{
  if (ShouldHaveDirectoryService()) {
    MOZ_ASSERT(gGREPath);
#ifdef OS_WIN
    exePath = FilePath(char16ptr_t(gGREPath));
#else
    nsCString path;
    NS_CopyUnicodeToNative(nsDependentString(gGREPath), path);
    exePath = FilePath(path.get());
#endif
#ifdef MOZ_WIDGET_COCOA
    // We need to use an App Bundle on OS X so that we can hide
    // the dock icon. See Bug 557225.
    exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_BUNDLE);
#endif
  }

  if (exePath.empty()) {
#ifdef OS_WIN
    exePath = FilePath::FromWStringHack(CommandLine::ForCurrentProcess()->program());
#else
    exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
#endif
    exePath = exePath.DirName();
  }

  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
}

//static
void
GeckoChildProcessHost::GetPathToBinary(FilePath& exePath)
{
  if (ShouldHaveDirectoryService()) {
    MOZ_ASSERT(gGREBinPath);
#ifdef OS_WIN
    exePath = FilePath(char16ptr_t(gGREBinPath));
#elif MOZ_WIDGET_COCOA
    nsCOMPtr<nsIFile> childProcPath;
    NS_NewLocalFile(nsDependentString(gGREBinPath), false,
                    getter_AddRefs(childProcPath));
    // We need to use an App Bundle on OS X so that we can hide
    // the dock icon. See Bug 557225.
    childProcPath->AppendNative(NS_LITERAL_CSTRING("plugin-container.app"));
    childProcPath->AppendNative(NS_LITERAL_CSTRING("Contents"));
    childProcPath->AppendNative(NS_LITERAL_CSTRING("MacOS"));
    nsCString tempCPath;
    childProcPath->GetNativePath(tempCPath);
    exePath = FilePath(tempCPath.get());
#else
    nsCString path;
    NS_CopyUnicodeToNative(nsDependentString(gGREBinPath), path);
    exePath = FilePath(path.get());
#endif
  }

  if (exePath.empty()) {
#ifdef OS_WIN
    exePath = FilePath::FromWStringHack(CommandLine::ForCurrentProcess()->program());
#else
    exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
#endif
    exePath = exePath.DirName();
  }

#ifdef MOZ_WIDGET_ANDROID
  exePath = exePath.AppendASCII("lib");

  // We must use the PIE binary on 5.0 and higher
  const char* processName = mozilla::AndroidBridge::Bridge()->GetAPIVersion() >= 21 ?
    MOZ_CHILD_PROCESS_NAME_PIE : MOZ_CHILD_PROCESS_NAME;

  exePath = exePath.AppendASCII(processName);
#else
  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
#endif
}

        // Open an item via a shell execute command. Error code checking and casting
        // explanation: http://msdn2.microsoft.com/en-us/library/ms647732.aspx
        bool OpenItemViaShell(const FilePath& full_path)
        {
            HINSTANCE h = ::ShellExecuteW(
                NULL, NULL, full_path.value().c_str(), NULL,
                full_path.DirName().value().c_str(), SW_SHOWNORMAL);

            LONG_PTR error = reinterpret_cast<LONG_PTR>(h);
            if(error > 32)
            {
                return true;
            }

            if((error == SE_ERR_NOASSOC))
            {
                return OpenItemWithExternalApp(full_path.value());
            }

            return false;
        }

//static
void
GeckoChildProcessHost::GetPathToBinary(FilePath& exePath, GeckoProcessType processType)
{
  if (sRunSelfAsContentProc &&
      processType == GeckoProcessType_Content) {
#if defined(OS_WIN)
    wchar_t exePathBuf[MAXPATHLEN];
    if (!::GetModuleFileNameW(nullptr, exePathBuf, MAXPATHLEN)) {
      MOZ_CRASH("GetModuleFileNameW failed (FIXME)");
    }
    exePath = FilePath::FromWStringHack(exePathBuf);
#elif defined(OS_POSIX)
    exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
#else
#  error Sorry; target OS not supported yet.
#endif
    return;
  }

  if (ShouldHaveDirectoryService()) {
    MOZ_ASSERT(gGREBinPath);
#ifdef OS_WIN
    exePath = FilePath(char16ptr_t(gGREBinPath));
#elif MOZ_WIDGET_COCOA
    nsCOMPtr<nsIFile> childProcPath;
    NS_NewLocalFile(nsDependentString(gGREBinPath), false,
                    getter_AddRefs(childProcPath));

    // We need to use an App Bundle on OS X so that we can hide
    // the dock icon. See Bug 557225.
    childProcPath->AppendNative(NS_LITERAL_CSTRING("plugin-container.app"));
    childProcPath->AppendNative(NS_LITERAL_CSTRING("Contents"));
    childProcPath->AppendNative(NS_LITERAL_CSTRING("MacOS"));
    nsCString tempCPath;
    childProcPath->GetNativePath(tempCPath);
    exePath = FilePath(tempCPath.get());
#else
    nsCString path;
    NS_CopyUnicodeToNative(nsDependentString(gGREBinPath), path);
    exePath = FilePath(path.get());
#endif
  }

  if (exePath.empty()) {
#ifdef OS_WIN
    exePath = FilePath::FromWStringHack(CommandLine::ForCurrentProcess()->program());
#else
    exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
#endif
    exePath = exePath.DirName();
  }

#ifdef MOZ_WIDGET_ANDROID
  exePath = exePath.AppendASCII("lib");

  // We must use the PIE binary on 5.0 and higher
  const char* processName = mozilla::AndroidBridge::Bridge()->GetAPIVersion() >= 21 ?
    MOZ_CHILD_PROCESS_NAME_PIE : MOZ_CHILD_PROCESS_NAME;

  exePath = exePath.AppendASCII(processName);
#else
  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
#endif
}

bool
GeckoChildProcessHost::PerformAsyncLaunch(std::vector<std::string> aExtraOpts)
{
  // FIXME/cjones: make this work from non-IO threads, too

  // We rely on the fact that InitializeChannel() has already been processed
  // on the IO thread before this point is reached.
  if (!GetChannel()) {
    return false;
  }

  base::ProcessHandle process;

  // send the child the PID so that it can open a ProcessHandle back to us.
  // probably don't want to do this in the long run
  char pidstring[32];
  PR_snprintf(pidstring, sizeof(pidstring) - 1,
	      "%ld", base::Process::Current().pid());

  const char* const childProcessType =
      XRE_ChildProcessTypeToString(mProcessType);

//--------------------------------------------------
#if defined(OS_POSIX)
  // For POSIX, we have to be extremely anal about *not* using
  // std::wstring in code compiled with Mozilla's -fshort-wchar
  // configuration, because chromium is compiled with -fno-short-wchar
  // and passing wstrings from one config to the other is unsafe.  So
  // we split the logic here.

  FilePath exePath;
#ifdef OS_LINUX
  base::environment_map newEnvVars;
#endif

  nsCOMPtr<nsIProperties> directoryService(do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID));
  nsCOMPtr<nsIFile> greDir;
  nsresult rv = directoryService->Get(NS_GRE_DIR, NS_GET_IID(nsIFile), getter_AddRefs(greDir));
  if (NS_SUCCEEDED(rv)) {
    nsCString path;
    greDir->GetNativePath(path);
    exePath = FilePath(path.get());
#ifdef OS_LINUX
    newEnvVars["LD_LIBRARY_PATH"] = path.get();
#endif
  }
  else {
    exePath = FilePath(CommandLine::ForCurrentProcess()->argv()[0]);
    exePath = exePath.DirName();
  }
  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);

  // remap the IPC socket fd to a well-known int, as the OS does for
  // STDOUT_FILENO, for example
  int srcChannelFd, dstChannelFd;
  channel().GetClientFileDescriptorMapping(&srcChannelFd, &dstChannelFd);
  mFileMap.push_back(std::pair<int,int>(srcChannelFd, dstChannelFd));

  // no need for kProcessChannelID, the child process inherits the
  // other end of the socketpair() from us

  std::vector<std::string> childArgv;

  childArgv.push_back(exePath.value());

  childArgv.insert(childArgv.end(), aExtraOpts.begin(), aExtraOpts.end());

  childArgv.push_back(pidstring);
  childArgv.push_back(childProcessType);

#if defined(MOZ_CRASHREPORTER)
  int childCrashFd, childCrashRemapFd;
  if (!CrashReporter::CreateNotificationPipeForChild(
        &childCrashFd, &childCrashRemapFd))
    return false;
  if (0 <= childCrashFd) {
    mFileMap.push_back(std::pair<int,int>(childCrashFd, childCrashRemapFd));
    // "true" == crash reporting enabled
    childArgv.push_back("true");
  }
  else {
    // "false" == crash reporting disabled
    childArgv.push_back("false");
  }
#endif

  base::LaunchApp(childArgv, mFileMap,
#ifdef OS_LINUX
                  newEnvVars,
#endif
                  false, &process);

//--------------------------------------------------
#elif defined(OS_WIN)

  FilePath exePath =
    FilePath::FromWStringHack(CommandLine::ForCurrentProcess()->program());
  exePath = exePath.DirName();

  exePath = exePath.AppendASCII(MOZ_CHILD_PROCESS_NAME);
//.........这里部分代码省略.........