C++ nsCString::IsVoid方法代码示例

  bool
  ParseHeader(nsACString::const_iterator& aStart,
              nsACString::const_iterator& aEnd,
              bool* aWasEmptyHeader)
  {
    nsAutoCString headerName, headerValue;
    if (!FetchUtil::ExtractHeader(aStart, aEnd,
                                  headerName, headerValue,
                                  aWasEmptyHeader)) {
      return false;
    }
    if (*aWasEmptyHeader) {
      return true;
    }

    if (headerName.LowerCaseEqualsLiteral("content-disposition")) {
      nsCCharSeparatedTokenizer tokenizer(headerValue, ';');
      bool seenFormData = false;
      while (tokenizer.hasMoreTokens()) {
        const nsDependentCSubstring& token = tokenizer.nextToken();
        if (token.IsEmpty()) {
          continue;
        }

        if (token.EqualsLiteral("form-data")) {
          seenFormData = true;
          continue;
        }

        if (seenFormData &&
            StringBeginsWith(token, NS_LITERAL_CSTRING("name="))) {
          mName = StringTail(token, token.Length() - 5);
          mName.Trim(" \"");
          continue;
        }

        if (seenFormData &&
            StringBeginsWith(token, NS_LITERAL_CSTRING("filename="))) {
          mFilename = StringTail(token, token.Length() - 9);
          mFilename.Trim(" \"");
          continue;
        }
      }

      if (mName.IsVoid()) {
        // Could not parse a valid entry name.
        return false;
      }
    } else if (headerName.LowerCaseEqualsLiteral("content-type")) {
      mContentType = headerValue;
    }

    return true;
  }

NS_IMETHODIMP GnomeKeyring::Init()
#endif
{
  nsresult ret;
  nsCOMPtr<nsIServiceManager> servMan;
  nsCOMPtr<nsIPrefService> prefService;
  nsCOMPtr<nsIPrefBranch> pref;
#ifdef PR_LOGGING
  gGnomeKeyringLog = PR_NewLogModule("GnomeKeyringLog");
#endif
  keyringName.AssignLiteral(kDefaultKeyring);
  ret = NS_GetServiceManager(getter_AddRefs(servMan));
  if (ret != NS_OK) { return ret; }

  ret = servMan->GetServiceByContractID("@mozilla.org/preferences-service;1",
                                        NS_GET_IID(nsIPrefService),
                                        getter_AddRefs(prefService));
  if (ret != NS_OK) { return ret; }

  ret = prefService->ReadUserPrefs(nullptr);
  if (ret != NS_OK) { return ret; }

  ret = prefService->GetBranch(kPrefsBranch, getter_AddRefs(pref));
  if (ret != NS_OK) { return ret; }

  PRInt32 prefType;
  ret = pref->GetPrefType(kPrefsKeyring, &prefType);
  if (ret != NS_OK) { return ret; }

  if (prefType == 32) {
    char* tempKeyringName;
    pref->GetCharPref(kPrefsKeyring, &tempKeyringName);
    keyringName = tempKeyringName;
    if ( keyringName.IsVoid() || keyringName.IsEmpty() ) keyringName.AssignLiteral(kDefaultKeyring);
  }

  /* Create the password keyring, it doesn't hurt if it already exists */
  GnomeKeyringResult result = gnome_keyring_create_sync(keyringName.get(), NULL);
  if ((result != GNOME_KEYRING_RESULT_OK) &&
      (result != GNOME_KEYRING_RESULT_KEYRING_ALREADY_EXISTS)) {
    NS_ERROR("Can't open or create password keyring!");
    return NS_ERROR_FAILURE;
  }
  return ret;
}

AtkSocketAccessible::AtkSocketAccessible(nsIContent* aContent,
        nsIWeakReference* aShell,
        const nsCString& aPlugId) :
    nsAccessibleWrap(aContent, aShell)
{
    mAtkObject = mai_atk_socket_new(this);
    if (!mAtkObject)
        return;

    // Embeds the children of an AtkPlug, specified by plugId, as the children of
    // this socket.
    // Using G_TYPE macros instead of ATK_SOCKET macros to avoid undefined
    // symbols.
    if (gCanEmbed && G_TYPE_CHECK_INSTANCE_TYPE(mAtkObject, g_atk_socket_type) &&
            !aPlugId.IsVoid()) {
        AtkSocket* accSocket =
            G_TYPE_CHECK_INSTANCE_CAST(mAtkObject, g_atk_socket_type, AtkSocket);
        g_atk_socket_embed(accSocket, (gchar*)aPlugId.get());
    }
}

  // The end of a body is marked by a CRLF followed by the boundary. So the
  // CRLF is part of the boundary and not the body, but any prior CRLFs are
  // part of the body. This will position the iterator at the beginning of the
  // boundary (after the CRLF).
  bool
  ParseBody(const nsACString& aBoundaryString,
            nsACString::const_iterator& aStart,
            nsACString::const_iterator& aEnd)
  {
    const char* beginning = aStart.get();

    // Find the boundary marking the end of the body.
    nsACString::const_iterator end(aEnd);
    if (!FindInReadable(aBoundaryString, aStart, end)) {
      return false;
    }

    // We found a boundary, strip the just prior CRLF, and consider
    // everything else the body section.
    if (aStart.get() - beginning < 2) {
      // Only the first entry can have a boundary right at the beginning. Even
      // an empty body will have a CRLF before the boundary. So this is
      // a failure.
      return false;
    }

    // Check that there is a CRLF right before the boundary.
    aStart.advance(-2);

    // Skip optional hyphens.
    if (*aStart == '-' && *(aStart.get()+1) == '-') {
      if (aStart.get() - beginning < 2) {
        return false;
      }

      aStart.advance(-2);
    }

    if (*aStart != nsCRT::CR || *(aStart.get()+1) != nsCRT::LF) {
      return false;
    }

    nsAutoCString body(beginning, aStart.get() - beginning);

    // Restore iterator to after the \r\n as we promised.
    // We do not need to handle the extra hyphens case since our boundary
    // parser in PushOverBoundary()
    aStart.advance(2);

    if (!mFormData) {
      mFormData = new nsFormData();
    }

    NS_ConvertUTF8toUTF16 name(mName);

    if (mFilename.IsVoid()) {
      mFormData->Append(name, NS_ConvertUTF8toUTF16(body));
    } else {
      // Unfortunately we've to copy the data first since all our strings are
      // going to free it. We also need fallible alloc, so we can't just use
      // ToNewCString().
      char* copy = static_cast<char*>(moz_xmalloc(body.Length()));
      if (!copy) {
        NS_WARNING("Failed to copy File entry body.");
        return false;
      }
      nsCString::const_iterator bodyIter, bodyEnd;
      body.BeginReading(bodyIter);
      body.EndReading(bodyEnd);
      char *p = copy;
      while (bodyIter != bodyEnd) {
        *p++ = *bodyIter++;
      }
      p = nullptr;

      nsRefPtr<Blob> file =
        File::CreateMemoryFile(mParentObject,
                               reinterpret_cast<void *>(copy), body.Length(),
                               NS_ConvertUTF8toUTF16(mFilename),
                               NS_ConvertUTF8toUTF16(mContentType), /* aLastModifiedDate */ 0);
      Optional<nsAString> dummy;
      mFormData->Append(name, *file, dummy);
    }

    return true;
  }