C++ NS_NAMED_LITERAL_CSTRING函数代码示例

bool
IDBTransaction::StartSavepoint()
{
  NS_PRECONDITION(!NS_IsMainThread(), "Wrong thread!");
  NS_PRECONDITION(mConnection, "No connection!");

  nsresult rv;

  if (!mHasInitialSavepoint) {
    NS_NAMED_LITERAL_CSTRING(beginSavepoint,
                             "SAVEPOINT " SAVEPOINT_INITIAL);
    rv = mConnection->ExecuteSimpleSQL(beginSavepoint);
    NS_ENSURE_SUCCESS(rv, false);

    mHasInitialSavepoint = true;
  }

  NS_ASSERTION(!mSavepointCount, "Mismatch!");
  mSavepointCount = 1;

  // TODO try to cache this statement
  NS_NAMED_LITERAL_CSTRING(savepoint, "SAVEPOINT " SAVEPOINT_INTERMEDIATE);
  rv = mConnection->ExecuteSimpleSQL(savepoint);
  NS_ENSURE_SUCCESS(rv, false);

  return true;
}

bool nsPluginsDir::IsPluginFile(nsIFile* file)
{
    nsAutoCString filename;
    if (NS_FAILED(file->GetNativeLeafName(filename)))
        return false;

#ifdef ANDROID
    // It appears that if you load
    // 'libstagefright_honeycomb.so' on froyo, or
    // 'libstagefright_froyo.so' on honeycomb, we will abort.
    // Since these are just helper libs, we can ignore.
    const char *cFile = filename.get();
    if (strstr(cFile, "libstagefright") != NULL)
        return false;
#endif

    NS_NAMED_LITERAL_CSTRING(dllSuffix, LOCAL_PLUGIN_DLL_SUFFIX);
    if (filename.Length() > dllSuffix.Length() &&
        StringEndsWith(filename, dllSuffix))
        return true;
    
#ifdef LOCAL_PLUGIN_DLL_ALT_SUFFIX
    NS_NAMED_LITERAL_CSTRING(dllAltSuffix, LOCAL_PLUGIN_DLL_ALT_SUFFIX);
    if (filename.Length() > dllAltSuffix.Length() &&
        StringEndsWith(filename, dllAltSuffix))
        return true;
#endif
    return false;
}

nsresult
CountHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
  nsCString table;
  if (mIndex->IsUnique()) {
    table.AssignLiteral("unique_index_data");
  }
  else {
    table.AssignLiteral("index_data");
  }

  NS_NAMED_LITERAL_CSTRING(lowerKeyName, "lower_key");
  NS_NAMED_LITERAL_CSTRING(upperKeyName, "upper_key");
  NS_NAMED_LITERAL_CSTRING(value, "value");

  nsCAutoString keyRangeClause;
  if (mKeyRange) {
    if (!mKeyRange->Lower().IsUnset()) {
      AppendConditionClause(value, lowerKeyName, false,
                            !mKeyRange->IsLowerOpen(), keyRangeClause);
    }
    if (!mKeyRange->Upper().IsUnset()) {
      AppendConditionClause(value, upperKeyName, true,
                            !mKeyRange->IsUpperOpen(), keyRangeClause);
    }
  }

  nsCString query = NS_LITERAL_CSTRING("SELECT count(*) FROM ") + table +
                    NS_LITERAL_CSTRING(" WHERE index_id = :id") +
                    keyRangeClause;

  nsCOMPtr<mozIStorageStatement> stmt = mTransaction->GetCachedStatement(query);
  NS_ENSURE_TRUE(stmt, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);

  mozStorageStatementScoper scoper(stmt);

  nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("id"), mIndex->Id());
  NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);

  if (mKeyRange) {
    if (!mKeyRange->Lower().IsUnset()) {
      rv = mKeyRange->Lower().BindToStatement(stmt, lowerKeyName);
      NS_ENSURE_SUCCESS(rv, rv);
    }
    if (!mKeyRange->Upper().IsUnset()) {
      rv = mKeyRange->Upper().BindToStatement(stmt, upperKeyName);
      NS_ENSURE_SUCCESS(rv, rv);
    }
  }

  bool hasResult;
  rv = stmt->ExecuteStep(&hasResult);
  NS_ENSURE_SUCCESS(rv, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);
  NS_ENSURE_TRUE(hasResult, NS_ERROR_DOM_INDEXEDDB_UNKNOWN_ERR);

  mCount = stmt->AsInt64(0);
  return NS_OK;
}

nsresult TestNativeXMLHttpRequest()
{
  nsresult rv;

  nsCOMPtr<nsIXMLHttpRequest> xhr =
    do_CreateInstance(NS_XMLHTTPREQUEST_CONTRACTID, &rv);
  TEST_ENSURE_SUCCESS(rv, "Couldn't create nsIXMLHttpRequest instance!");

  NS_NAMED_LITERAL_CSTRING(getString, "GET");
  NS_NAMED_LITERAL_CSTRING(testURL, TEST_URL);
  const nsAString& empty = EmptyString();
  
  printf("*** About to see an expected warning about mPrincipal:\n");
  rv = xhr->OpenRequest(getString, testURL, PR_FALSE, empty, empty);
  printf("*** End of expected warning output.\n");
  TEST_ENSURE_FAILED(rv, "OpenRequest should have failed!");

  nsCOMPtr<nsIScriptSecurityManager> secman =
    do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
  TEST_ENSURE_SUCCESS(rv, "Couldn't get script security manager!");

  nsCOMPtr<nsIPrincipal> systemPrincipal;
  rv = secman->GetSystemPrincipal(getter_AddRefs(systemPrincipal));
  TEST_ENSURE_SUCCESS(rv, "Couldn't get system principal!");

  rv = xhr->Init(systemPrincipal, nsnull, nsnull, nsnull);
  TEST_ENSURE_SUCCESS(rv, "Couldn't initialize the XHR!");

  rv = xhr->OpenRequest(getString, testURL, PR_FALSE, empty, empty);
  TEST_ENSURE_SUCCESS(rv, "OpenRequest failed!");

  rv = xhr->Send(nsnull);
  TEST_ENSURE_SUCCESS(rv, "Send failed!");

  nsAutoString response;
  rv = xhr->GetResponseText(response);
  TEST_ENSURE_SUCCESS(rv, "GetResponse failed!");

  if (!response.EqualsLiteral(TEST_URL_CONTENT)) {
    fail("Response text does not match!");
    return NS_ERROR_FAILURE;
  }

  nsCOMPtr<nsIDOMDocument> dom;
  rv = xhr->GetResponseXML(getter_AddRefs(dom));
  TEST_ENSURE_SUCCESS(rv, "GetResponseXML failed!");

  if (!dom) {
    fail("No DOM document constructed!");
    return NS_ERROR_FAILURE;
  }

  passed("Native XMLHttpRequest");
  return NS_OK;
}

nsresult
nsResProtocolHandler::Init()
{
    if (!mSubstitutions.Init(32))
        return NS_ERROR_UNEXPECTED;

    nsresult rv;

    mIOService = do_GetIOService(&rv);
    NS_ENSURE_SUCCESS(rv, rv);

#ifdef MOZ_OMNIJAR
    nsCOMPtr<nsIFile> omniJar(mozilla::OmnijarPath());
    if (omniJar)
        return Init(omniJar);
#endif

    // these entries should be kept in sync with the omnijar Init function

    //
    // make resource:/// point to the application directory
    //
    rv = AddSpecialDir(NS_OS_CURRENT_PROCESS_DIR, EmptyCString());
    NS_ENSURE_SUCCESS(rv, rv);

    //
    // make resource://gre/ point to the GRE directory
    //
    rv = AddSpecialDir(NS_GRE_DIR, kGRE);
    NS_ENSURE_SUCCESS(rv, rv);

    // make resource://gre-resources/ point to gre toolkit[.jar]/res
    nsCOMPtr<nsIURI> greURI;
    nsCOMPtr<nsIURI> greResURI;
    GetSubstitution(kGRE, getter_AddRefs(greURI));
#ifdef MOZ_CHROME_FILE_FORMAT_JAR
    NS_NAMED_LITERAL_CSTRING(strGRE_RES_URL, "jar:chrome/toolkit.jar!/res/");
#else
    NS_NAMED_LITERAL_CSTRING(strGRE_RES_URL, "chrome/toolkit/res/");
#endif
    rv = mIOService->NewURI(strGRE_RES_URL, nsnull, greURI,
                            getter_AddRefs(greResURI));
    SetSubstitution(kGRE_RESOURCES, greResURI);
    //XXXbsmedberg Neil wants a resource://pchrome/ for the profile chrome dir...
    // but once I finish multiple chrome registration I'm not sure that it is needed

    // XXX dveditz: resource://pchrome/ defeats profile directory salting
    // if web content can load it. Tread carefully.

    return rv;
}

NS_IMETHODIMP
CommitHelper::Run()
{
  if (NS_IsMainThread()) {
    NS_ASSERTION(mDoomedObjects.IsEmpty(), "Didn't release doomed objects!");

    nsCOMPtr<nsIDOMEvent> event;
    if (mAborted) {
      event = IDBEvent::CreateGenericEvent(NS_LITERAL_STRING(ABORT_EVT_STR));
    }
    else {
      event = IDBEvent::CreateGenericEvent(NS_LITERAL_STRING(COMPLETE_EVT_STR));
    }
    NS_ENSURE_TRUE(event, NS_ERROR_FAILURE);

    PRBool dummy;
    if (NS_FAILED(mTransaction->DispatchEvent(event, &dummy))) {
      NS_WARNING("Dispatch failed!");
    }

    mTransaction = nsnull;
    return NS_OK;
  }

  if (mAborted) {
    NS_ASSERTION(mConnection, "This had better not be null!");

    NS_NAMED_LITERAL_CSTRING(rollback, "ROLLBACK TRANSACTION");
    if (NS_FAILED(mConnection->ExecuteSimpleSQL(rollback))) {
      NS_WARNING("Failed to rollback transaction!");
    }
  }
  else if (mHasInitialSavepoint) {
    NS_ASSERTION(mConnection, "This had better not be null!");

    NS_NAMED_LITERAL_CSTRING(release, "RELEASE " SAVEPOINT_INITIAL);
    if (NS_FAILED(mConnection->ExecuteSimpleSQL(release))) {
      NS_WARNING("Failed to release transaction!");
    }
  }

  mDoomedObjects.Clear();

  mConnection->Close();
  mConnection = nsnull;

  return NS_OK;
}

bool IsVideoContentType(const nsCString& aContentType) {
  NS_NAMED_LITERAL_CSTRING(video, "video");
  if (FindInReadable(video, aContentType)) {
    return true;
  }
  return false;
}

/* static */
nsresult
sbURIChecker::FixupPath( const nsACString& aPath,
                               nsACString& _retval )
{
  // aPath may be empty
  if ( aPath.IsEmpty() ) {
    _retval.Truncate();
    return NS_OK;
  }

  NS_NAMED_LITERAL_CSTRING( slashString, "/" );

  // Construct a dummy URL that incorporates the path that the user passed in.
  nsCString dummyURL("http://dummy.com");

  // Make sure that aPath begins with a slash. Otherwise we could end up with
  // something like "foo.combar" rather than "foo.com/bar".
  if ( !StringBeginsWith( aPath, slashString ) ) {
    dummyURL.Append(slashString);
  }

  dummyURL.Append(aPath);

  nsCOMPtr<nsIURI> uri;
  nsresult rv = NS_NewURI( getter_AddRefs(uri), dummyURL );
  NS_ENSURE_SUCCESS( rv, rv );

  // Hand off.
  return sbURIChecker::FixupPath( uri, _retval );
}

PRUint16
RemoveHelper::DoDatabaseWork(mozIStorageConnection* aConnection)
{
  NS_PRECONDITION(aConnection, "Passed a null connection!");

  nsCOMPtr<mozIStorageStatement> stmt =
    mTransaction->RemoveStatement(mAutoIncrement);
  NS_ENSURE_TRUE(stmt, nsIIDBDatabaseException::UNKNOWN_ERR);
  mozStorageStatementScoper scoper(stmt);

  nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("osid"), mOSID);
  NS_ENSURE_SUCCESS(rv, nsIIDBDatabaseException::UNKNOWN_ERR);

  NS_ASSERTION(!mKey.IsUnset() && !mKey.IsNull(), "Must have a key here!");

  NS_NAMED_LITERAL_CSTRING(key_value, "key_value");

  if (mKey.IsInt()) {
    rv = stmt->BindInt64ByName(key_value, mKey.IntValue());
  }
  else if (mKey.IsString()) {
    rv = stmt->BindStringByName(key_value, mKey.StringValue());
  }
  else {
    NS_NOTREACHED("Unknown key type!");
  }
  NS_ENSURE_SUCCESS(rv, nsIIDBDatabaseException::UNKNOWN_ERR);

  // Search for it!
  rv = stmt->Execute();
  NS_ENSURE_SUCCESS(rv, nsIIDBDatabaseException::UNKNOWN_ERR);

  return OK;
}

nsresult
nsDirIndexParser::Init() {
  mLineStart = 0;
  mHasDescription = PR_FALSE;
  mFormat = nsnull;

  // get default charset to be used for directory listings (fallback to
  // ISO-8859-1 if pref is unavailable).
  NS_NAMED_LITERAL_CSTRING(kFallbackEncoding, "ISO-8859-1");
  nsXPIDLString defCharset;
  nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID));
  if (prefs) {
    nsCOMPtr<nsIPrefLocalizedString> prefVal;
    prefs->GetComplexValue("intl.charset.default",
                           NS_GET_IID(nsIPrefLocalizedString),
                           getter_AddRefs(prefVal));
    if (prefVal)
      prefVal->ToString(getter_Copies(defCharset));
  }
  if (!defCharset.IsEmpty())
    LossyCopyUTF16toASCII(defCharset, mEncoding); // charset labels are always ASCII
  else
    mEncoding.Assign(kFallbackEncoding);
 
  nsresult rv;
  // XXX not threadsafe
  if (gRefCntParser++ == 0)
    rv = CallGetService(NS_ITEXTTOSUBURI_CONTRACTID, &gTextToSubURI);
  else
    rv = NS_OK;

  return rv;
}

nsresult
IDBKeyRange::BindToStatement(mozIStorageStatement* aStatement) const
{
  MOZ_ASSERT(aStatement);

  NS_NAMED_LITERAL_CSTRING(lowerKey, "lower_key");

  if (IsOnly()) {
    return Lower().BindToStatement(aStatement, lowerKey);
  }

  nsresult rv;

  if (!Lower().IsUnset()) {
    rv = Lower().BindToStatement(aStatement, lowerKey);
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
    }
  }

  if (!Upper().IsUnset()) {
    rv = Upper().BindToStatement(aStatement, NS_LITERAL_CSTRING("upper_key"));
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
    }
  }

  return NS_OK;
}

void
Service::minimizeMemory()
{
  nsTArray<nsRefPtr<Connection> > connections;
  getConnections(connections);

  for (uint32_t i = 0; i < connections.Length(); i++) {
    nsRefPtr<Connection> conn = connections[i];
    if (conn->connectionReady()) {
      NS_NAMED_LITERAL_CSTRING(shrinkPragma, "PRAGMA shrink_memory");
      nsCOMPtr<mozIStorageConnection> syncConn = do_QueryInterface(
        NS_ISUPPORTS_CAST(mozIStorageAsyncConnection*, conn));
      DebugOnly<nsresult> rv;

      if (!syncConn) {
        nsCOMPtr<mozIStoragePendingStatement> ps;
        rv = connections[i]->ExecuteSimpleSQLAsync(shrinkPragma, nullptr,
          getter_AddRefs(ps));
      } else {
        rv = connections[i]->ExecuteSimpleSQL(shrinkPragma);
      }

      MOZ_ASSERT(NS_SUCCEEDED(rv),
        "Should have been able to purge sqlite caches");
    }
  }

nsresult
net_GetURLSpecFromActualFile(nsIFile *aFile, nsACString &result)
{
    nsresult rv;
    nsAutoString path;
  
    // construct URL spec from file path
    rv = aFile->GetPath(path);
    if (NS_FAILED(rv)) return rv;
  
    // Replace \ with / to convert to an url
    path.ReplaceChar(char16_t(0x5Cu), char16_t(0x2Fu));

    nsAutoCString escPath;

    // Windows Desktop paths begin with a drive letter, so need an 'extra'
    // slash at the begining
    // C:\Windows =>  file:///C:/Windows
    NS_NAMED_LITERAL_CSTRING(prefix, "file:///");

    // Escape the path with the directory mask
    NS_ConvertUTF16toUTF8 ePath(path);
    if (NS_EscapeURL(ePath.get(), -1, esc_Directory+esc_Forced, escPath))
        escPath.Insert(prefix, 0);
    else
        escPath.Assign(prefix + ePath);

    // esc_Directory does not escape the semicolons, so if a filename 
    // contains semicolons we need to manually escape them.
    // This replacement should be removed in bug #473280
    escPath.ReplaceSubstring(";", "%3b");

    result = escPath;
    return NS_OK;
}

void nsMsgI18NConvertRawBytesToUTF8(const nsCString& inString, 
                                    const char* charset,
                                    nsACString& outString)
{
  if (MsgIsUTF8(inString))
  {
    outString.Assign(inString);
    return;
  }

  nsAutoString utf16Text;
  nsresult rv = ConvertToUnicode(charset, inString, utf16Text);
  if (NS_SUCCEEDED(rv))
  {
    CopyUTF16toUTF8(utf16Text, outString);
    return;
  }

  // EF BF BD (UTF-8 encoding of U+FFFD)
  NS_NAMED_LITERAL_CSTRING(utf8ReplacementChar, "\357\277\275");
  const char* cur = inString.BeginReading();
  const char* end = inString.EndReading();
  outString.Truncate();
  while (cur < end) {
    char c = *cur++;
    if (c & char(0x80))
      outString.Append(utf8ReplacementChar);
    else
      outString.Append(c);
  }
}

NS_IMETHODIMP sbScriptableFilterResult::GetClassName(char * *aClassName)
{
  NS_ENSURE_ARG_POINTER(aClassName);
  
  NS_NAMED_LITERAL_CSTRING( kClassName, "sbScriptableFilterResult" );
  *aClassName = ToNewCString(kClassName);
  return aClassName ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}