C++ nsAString::Equals方法代码示例

NS_IMETHODIMP
SpeechRecognition::GetUserMediaErrorCallback::OnError(const nsAString& aError)
{
  SpeechRecognitionErrorCode errorCode;

  if (aError.Equals(NS_LITERAL_STRING("PERMISSION_DENIED"))) {
    errorCode = SpeechRecognitionErrorCode::Not_allowed;
  } else {
    errorCode = SpeechRecognitionErrorCode::Audio_capture;
  }

  mRecognition->DispatchError(SpeechRecognition::EVENT_AUDIO_ERROR, errorCode,
                              aError);

  return NS_OK;
}

/* void appendFilter (in AString title, in AString filter); */
NS_IMETHODIMP
nsFilePicker::AppendFilter(const nsAString & aTitle, const nsAString & aFilter)
{
    if (aFilter.Equals(NS_LITERAL_STRING("..apps"))) {
        // No platform specific thing we can do here, really....
        return NS_OK;
    }

    nsCAutoString filter, name;
    CopyUTF16toUTF8(aFilter, filter);
    CopyUTF16toUTF8(aTitle, name);

    mFilters.AppendCString(filter);
    mFilterNames.AppendCString(name);

    return NS_OK;
}

NS_IMETHODIMP
PresentationConnection::NotifyStateChange(const nsAString& aSessionId,
                                       uint16_t aState)
{
  if (!aSessionId.Equals(mId)) {
    return NS_ERROR_INVALID_ARG;
  }

  PresentationConnectionState state;
  switch (aState) {
    case nsIPresentationSessionListener::STATE_CONNECTED:
      state = PresentationConnectionState::Connected;
      break;
    case nsIPresentationSessionListener::STATE_CLOSED:
      state = PresentationConnectionState::Closed;
      break;
    case nsIPresentationSessionListener::STATE_TERMINATED:
      state = PresentationConnectionState::Terminated;
      break;
    default:
      NS_WARNING("Unknown presentation session state.");
      return NS_ERROR_INVALID_ARG;
  }

  if (mState == state) {
    return NS_OK;
  }

  mState = state;

  // Unregister session listener if the session is no longer connected.
  if (mState == PresentationConnectionState::Terminated) {
    nsCOMPtr<nsIPresentationService> service =
      do_GetService(PRESENTATION_SERVICE_CONTRACTID);
    if (NS_WARN_IF(!service)) {
      return NS_ERROR_NOT_AVAILABLE;
    }

    nsresult rv = service->UnregisterSessionListener(mId);
    if(NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
    }
  }

  return DispatchStateChangeEvent();
}

NS_IMETHODIMP
PresentationConnection::NotifyStateChange(const nsAString& aSessionId,
                                          uint16_t aState,
                                          nsresult aReason)
{
  if (!aSessionId.Equals(mId)) {
    return NS_ERROR_INVALID_ARG;
  }

  PresentationConnectionState state;
  switch (aState) {
    case nsIPresentationSessionListener::STATE_CONNECTING:
      state = PresentationConnectionState::Connecting;
      break;
    case nsIPresentationSessionListener::STATE_CONNECTED:
      state = PresentationConnectionState::Connected;
      break;
    case nsIPresentationSessionListener::STATE_CLOSED:
      state = PresentationConnectionState::Closed;
      break;
    case nsIPresentationSessionListener::STATE_TERMINATED:
      state = PresentationConnectionState::Terminated;
      break;
    default:
      NS_WARNING("Unknown presentation session state.");
      return NS_ERROR_INVALID_ARG;
  }

  if (mState == state) {
    return NS_OK;
  }
  mState = state;

  nsresult rv = ProcessStateChanged(aReason);
  if(NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
  }

  if (mOwningConnectionList) {
    mOwningConnectionList->NotifyStateChange(aSessionId, this);
  }

  return NS_OK;
}

static nsresult IsContentTypeEqual(nsAString &aGuid,
                                   sbILibrary* aLibrary,
                                   const nsAString &aContentType,
                                   PRBool* aIsSame)
{
  NS_ENSURE_ARG_POINTER(aLibrary);
  NS_ENSURE_ARG_POINTER(aIsSame);
  nsresult rv;

  nsCOMPtr<sbIMediaItem> item;
  rv = aLibrary->GetItemByGuid(aGuid, getter_AddRefs(item));
  NS_ENSURE_SUCCESS(rv, rv);

  nsString contentType;
  rv = item->GetProperty(NS_LITERAL_STRING(SB_PROPERTY_CONTENTTYPE),
                         contentType);
  NS_ENSURE_SUCCESS(rv, rv);

  *aIsSame = aContentType.Equals(contentType);
  return NS_OK;
}

NS_IMETHODIMP
sbIPDDevice::SetPreference(const nsAString& aPrefName,
                           nsIVariant*      aPrefValue)
{
  // Validate arguments.
  NS_ENSURE_ARG_POINTER(aPrefValue);

  // Function variables.
  nsresult rv;

  // If a preference needs to be set on the device, enqueue a set preference
  // request.  The internal, locally stored preference is still set here to
  // provide immediate feedback.
  if (aPrefName.Equals(SB_SYNC_PARTNER_PREF)) {
    rv = ReqPushSetNamedValue(REQUEST_SET_PREF, aPrefName, aPrefValue);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  // Forward call to base class.
  return sbBaseDevice::SetPreference(aPrefName, aPrefValue);
}

NS_IMETHODIMP
nsHTMLCanvasElement::MozGetIPCContext(const nsAString& aContextId,
                                      nsISupports **aContext)
{
#ifdef MOZ_IPC
    if(!nsContentUtils::IsCallerTrustedForRead()) {
        // XXX ERRMSG we need to report an error to developers here! (bug 329026)
        return NS_ERROR_DOM_SECURITY_ERR;
    }

    // We only support 2d shmem contexts for now.
    if (!aContextId.Equals(NS_LITERAL_STRING("2d")))
        return NS_ERROR_INVALID_ARG;

    if (mCurrentContextId.IsEmpty()) {
        nsresult rv = GetContextHelper(aContextId, false, getter_AddRefs(mCurrentContext));
        NS_ENSURE_SUCCESS(rv, rv);
        if (!mCurrentContext) {
            return NS_OK;
        }

        mCurrentContext->SetIsIPC(true);

        rv = UpdateContext();
        NS_ENSURE_SUCCESS(rv, rv);

        mCurrentContextId.Assign(aContextId);
    } else if (!mCurrentContextId.Equals(aContextId)) {
        //XXX eventually allow for more than one active context on a given canvas
        return NS_ERROR_INVALID_ARG;
    }

    NS_ADDREF (*aContext = mCurrentContext);
    return NS_OK;
#else
    return NS_ERROR_NOT_IMPLEMENTED;
#endif
}

NS_IMETHODIMP
nsDOMScriptObjectFactory::GetScriptRuntime(const nsAString &aLanguageName,
                                           nsIScriptRuntime **aLanguage)
{
  // Note that many callers have optimized detection for JS (along with
  // supporting various alternate names for JS), so don't call this.
  // One exception is for the new "script-type" attribute on a node - and
  // there is no need to support backwards compatible names.
  // As JS is the default language, this is still rarely called for JS -
  // only when a node explicitly sets JS - so that is done last.
  nsCAutoString contractid(NS_LITERAL_CSTRING(
                          "@mozilla.org/script-language;1?script-type="));
  // Arbitrarily use utf8 encoding should the name have extended chars
  AppendUTF16toUTF8(aLanguageName, contractid);
  nsresult rv;
  nsCOMPtr<nsIScriptRuntime> lang =
        do_GetService(contractid.get(), &rv);

  if (NS_FAILED(rv)) {
    if (aLanguageName.Equals(NS_LITERAL_STRING("application/javascript")))
      return GetScriptRuntimeByID(nsIProgrammingLanguage::JAVASCRIPT, aLanguage);
    // Not JS and nothing else we know about.
    NS_WARNING("No script language registered for this mime-type");
    return NS_ERROR_FACTORY_NOT_REGISTERED;
  }
  // And stash it away in our array for fast lookup by ID.
  PRUint32 lang_ndx = NS_STID_INDEX(lang->GetScriptTypeID());
  if (mLanguageArray[lang_ndx] == nsnull) {
    mLanguageArray[lang_ndx] = lang;
  } else {
    // All languages are services - we should have an identical object!
    NS_ASSERTION(mLanguageArray[lang_ndx] == lang,
                 "Got a different language for this ID???");
  }
  *aLanguage = lang;
  NS_IF_ADDREF(*aLanguage);
  return NS_OK;
}

nsresult nsSceneTracker::SetRDFString (nsIRDFDataSource* aDS,
                                       nsIRDFResource* aSource,
                                       nsIRDFResource* aProp,
                                       const nsAString& aString) {
  NS_ENSURE_ARG(aDS);
  NS_ENSURE_ARG(aSource);
  NS_ENSURE_ARG(aProp);
  nsCOMPtr<nsIRDFNode> tmpnode;
  nsCOMPtr<nsIRDFService> rdfsvc = do_GetService(
    "@mozilla.org/rdf/rdf-service;1");
  nsCOMPtr<nsIRDFLiteral> newlit;
  rdfsvc->GetLiteral(PromiseFlatString(aString).get(), getter_AddRefs(newlit));
  nsresult rv = aDS->GetTarget(aSource, aProp, PR_TRUE,
    getter_AddRefs(tmpnode));
  if (NS_FAILED(rv))
    return rv;
  if (tmpnode) {
    // Check if no change is needed
    nsCOMPtr<nsIRDFLiteral> litval(do_QueryInterface(tmpnode));
    if (litval) {
      PRUnichar* result;
      rv = litval->GetValue(&result);
      if (NS_SUCCEEDED(rv)) {
        if (aString.Equals(result)) {
          PR_Free(result);
          return NS_OK;
        }
        PR_Free(result);
      }
    }
    rv = aDS->Change(aSource, aProp, tmpnode, newlit);
  }
  else if (! aString.IsEmpty()) {
    rv = aDS->Assert(aSource, aProp, newlit, PR_TRUE);
  }
  return rv;
}

// Removes the value aRemoveValue from the string list of white-space separated
// values aValueList
void
ChangeStyleTransaction::RemoveValueFromListOfValues(
                          nsAString& aValues,
                          const nsAString& aRemoveValue)
{
  nsAutoString classStr(aValues);
  nsAutoString outString;
  // put an extra null at the end
  classStr.Append(kNullCh);

  char16_t* start = classStr.BeginWriting();
  char16_t* end = start;

  while (kNullCh != *start) {
    while (kNullCh != *start && nsCRT::IsAsciiSpace(*start)) {
      // skip leading space
      start++;
    }
    end = start;

    while (kNullCh != *end && !nsCRT::IsAsciiSpace(*end)) {
      // look for space or end
      end++;
    }
    // end string here
    *end = kNullCh;

    if (start < end && !aRemoveValue.Equals(start)) {
      outString.Append(start);
      outString.Append(char16_t(' '));
    }

    start = ++end;
  }
  aValues.Assign(outString);
}

nsresult
nsKeygenFormProcessor::GetPublicKey(const nsAString& aValue,
                                    const nsAString& aChallenge,
                                    const nsAFlatString& aKeyType,
                                    nsAString& aOutPublicKey,
                                    const nsAString& aKeyParams)
{
    nsNSSShutDownPreventionLock locker;
    if (isAlreadyShutDown()) {
      return NS_ERROR_NOT_AVAILABLE;
    }

    nsresult rv = NS_ERROR_FAILURE;
    char *keystring = nullptr;
    char *keyparamsString = nullptr;
    uint32_t keyGenMechanism;
    PK11SlotInfo *slot = nullptr;
    PK11RSAGenParams rsaParams;
    SECOidTag algTag;
    int keysize = 0;
    void *params = nullptr;
    SECKEYPrivateKey *privateKey = nullptr;
    SECKEYPublicKey *publicKey = nullptr;
    CERTSubjectPublicKeyInfo *spkInfo = nullptr;
    SECStatus srv = SECFailure;
    SECItem spkiItem;
    SECItem pkacItem;
    SECItem signedItem;
    CERTPublicKeyAndChallenge pkac;
    pkac.challenge.data = nullptr;
    nsIGeneratingKeypairInfoDialogs * dialogs;
    nsKeygenThread *KeygenRunnable = 0;
    nsCOMPtr<nsIKeygenThread> runnable;

    // permanent and sensitive flags for keygen
    PK11AttrFlags attrFlags = PK11_ATTR_TOKEN | PK11_ATTR_SENSITIVE | PK11_ATTR_PRIVATE;

    UniquePLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
    if (!arena) {
        goto loser;
    }

    // Get the key size //
    for (size_t i = 0; i < number_of_key_size_choices; ++i) {
        if (aValue.Equals(mSECKeySizeChoiceList[i].name)) {
            keysize = mSECKeySizeChoiceList[i].size;
            break;
        }
    }
    if (!keysize) {
        goto loser;
    }

    // Set the keygen mechanism
    if (aKeyType.IsEmpty() || aKeyType.LowerCaseEqualsLiteral("rsa")) {
        keyGenMechanism = CKM_RSA_PKCS_KEY_PAIR_GEN;
    } else if (aKeyType.LowerCaseEqualsLiteral("ec")) {
        keyparamsString = ToNewCString(aKeyParams);
        if (!keyparamsString) {
            rv = NS_ERROR_OUT_OF_MEMORY;
            goto loser;
        }

        keyGenMechanism = CKM_EC_KEY_PAIR_GEN;
        /* ecParams are initialized later */
    } else {
        goto loser;
    }

    // Get the slot
    rv = GetSlot(keyGenMechanism, &slot);
    if (NS_FAILED(rv)) {
        goto loser;
    }
    switch (keyGenMechanism) {
        case CKM_RSA_PKCS_KEY_PAIR_GEN:
            rsaParams.keySizeInBits = keysize;
            rsaParams.pe = DEFAULT_RSA_KEYGEN_PE;
            algTag = DEFAULT_RSA_KEYGEN_ALG;
            params = &rsaParams;
            break;
        case CKM_EC_KEY_PAIR_GEN:
            /* XXX We ought to rethink how the KEYGEN tag is 
             * displayed. The pulldown selections presented
             * to the user must depend on the keytype.
             * The displayed selection could be picked
             * from the keyparams attribute (this is currently called
             * the pqg attribute).
             * For now, we pick ecparams from the keyparams field
             * if it specifies a valid supported curve, or else 
             * we pick one of secp384r1, secp256r1 or secp192r1
             * respectively depending on the user's selection
             * (High, Medium, Low). 
             * (RSA uses RSA-2048, RSA-1024 and RSA-512 for historical
             * reasons, while ECC choices represent a stronger mapping)
             * NOTE: The user's selection
             * is silently ignored when a valid curve is presented
             * in keyparams.
             */
            if ((params = decode_ec_params(keyparamsString)) == nullptr) {
//.........这里部分代码省略.........

bool
nsTemplateCondition::CheckMatchStrings(const nsAString& aLeftString,
                                       const nsAString& aRightString)
{
    bool match = false;

    if (aRightString.IsEmpty()) {
        if ((mRelation == eEquals) && aLeftString.IsEmpty())
            match = true;
    }
    else {
        switch (mRelation) {
            case eEquals:
                if (mIgnoreCase)
                    match = aLeftString.Equals(aRightString,
                                               nsCaseInsensitiveStringComparator());
                else
                    match = aLeftString.Equals(aRightString);
                break;

            case eLess:
            case eGreater:
            {
                // non-numbers always compare false
                nsresult err;
                PRInt32 leftint = PromiseFlatString(aLeftString).ToInteger(&err);
                if (NS_SUCCEEDED(err)) {
                    PRInt32 rightint = PromiseFlatString(aRightString).ToInteger(&err);
                    if (NS_SUCCEEDED(err)) {
                        match = (mRelation == eLess) ? (leftint < rightint) :
                                                       (leftint > rightint);
                    }
                }

                break;
            }

            case eBefore:
            {
                nsICollation* collation = nsXULContentUtils::GetCollation();
                if (collation) {
                    PRInt32 sortOrder;
                    collation->CompareString((mIgnoreCase ?
                                              static_cast<PRInt32>(nsICollation::kCollationCaseInSensitive) :
                                              static_cast<PRInt32>(nsICollation::kCollationCaseSensitive)),
                                              aLeftString,
                                              aRightString,
                                              &sortOrder);
                    match = (sortOrder < 0);
                }
                else if (mIgnoreCase) {
                    match = (Compare(aLeftString, aRightString,
                                     nsCaseInsensitiveStringComparator()) < 0);
                }
                else {
                    match = (Compare(aLeftString, aRightString) < 0);
                }
                break;
            }

            case eAfter:
            {
                nsICollation* collation = nsXULContentUtils::GetCollation();
                if (collation) {
                    PRInt32 sortOrder;
                    collation->CompareString((mIgnoreCase ?
                                              static_cast<PRInt32>(nsICollation::kCollationCaseInSensitive) :
                                              static_cast<PRInt32>(nsICollation::kCollationCaseSensitive)),
                                              aLeftString,
                                              aRightString,
                                              &sortOrder);
                    match = (sortOrder > 0);
                }
                else if (mIgnoreCase) {
                    match = (Compare(aLeftString, aRightString,
                                     nsCaseInsensitiveStringComparator()) > 0);
                }
                else {
                    match = (Compare(aLeftString, aRightString) > 0);
                }
                break;
            }

            case eStartswith:
                if (mIgnoreCase)
                    match = (StringBeginsWith(aLeftString, aRightString,
                                              nsCaseInsensitiveStringComparator()));
                else
                    match = (StringBeginsWith(aLeftString, aRightString));
                break;

            case eEndswith:
                if (mIgnoreCase)
                    match = (StringEndsWith(aLeftString, aRightString,
                                            nsCaseInsensitiveStringComparator()));
                else
                    match = (StringEndsWith(aLeftString, aRightString));
                break;

            case eContains:
//.........这里部分代码省略.........

nsresult
nsMsgSearchAdapter::GetSearchCharsets(nsAString &srcCharset, nsAString &dstCharset)
{
  nsresult rv;

  if (m_defaultCharset.IsEmpty())
  {
    m_forceAsciiSearch = false;  // set the default value in case of error
    nsCOMPtr<nsIPrefBranch> prefs(do_GetService(NS_PREFSERVICE_CONTRACTID, &rv));
    if (NS_SUCCEEDED(rv))
    {
      nsCOMPtr<nsIPrefLocalizedString> localizedstr;
      rv = prefs->GetComplexValue("mailnews.view_default_charset", NS_GET_IID(nsIPrefLocalizedString),
                                  getter_AddRefs(localizedstr));
      if (NS_SUCCEEDED(rv))
        localizedstr->GetData(getter_Copies(m_defaultCharset));

      prefs->GetBoolPref("mailnews.force_ascii_search", &m_forceAsciiSearch);
    }
  }
  srcCharset = m_defaultCharset.IsEmpty() ?
    NS_LITERAL_STRING("ISO-8859-1") : m_defaultCharset;

  if (m_scope)
  {
    // ### DMB is there a way to get the charset for the "window"?

    nsCOMPtr<nsIMsgFolder> folder;
    rv = m_scope->GetFolder(getter_AddRefs(folder));

    // Ask the newsgroup/folder for its csid.
    if (NS_SUCCEEDED(rv) && folder)
    {
      nsCString folderCharset;
      folder->GetCharset(folderCharset);
      dstCharset.Append(NS_ConvertASCIItoUTF16(folderCharset));
    }
  }
  else
    dstCharset.Assign(srcCharset);

  // If
  // the destination is still CS_DEFAULT, make the destination match
  // the source. (CS_DEFAULT is an indication that the charset
  // was undefined or unavailable.)
  // ### well, it's not really anymore. Is there an equivalent?
  if (dstCharset.Equals(m_defaultCharset))
  {
    dstCharset.Assign(srcCharset);
  }

  if (m_forceAsciiSearch)
  {
    // Special cases to use in order to force US-ASCII searching with Latin1
    // or MacRoman text. Eurgh. This only has to happen because IMAP
    // and Dredd servers currently (4/23/97) only support US-ASCII.
    //
    // If the dest csid is ISO Latin 1 or MacRoman, attempt to convert the
    // source text to US-ASCII. (Not for now.)
    // if ((dst_csid == CS_LATIN1) || (dst_csid == CS_MAC_ROMAN))
    dstCharset.AssignLiteral("us-ascii");
  }

  return NS_OK;
}

NS_IMETHODIMP
StaticAtom::ScriptableEquals(const nsAString& aString, bool* aResult)
{
  *aResult = aString.Equals(nsDependentString(mString, mLength));
  return NS_OK;
}

nsresult
nsKeygenFormProcessor::GetPublicKey(nsAString& aValue, nsAString& aChallenge,
                                    nsAFlatString& aKeyType,
                                    nsAString& aOutPublicKey, nsAString& aKeyParams)
{
    nsNSSShutDownPreventionLock locker;
    nsresult rv = NS_ERROR_FAILURE;
    char *keystring = nsnull;
    char *keyparamsString = nsnull, *str = nsnull;
    KeyType type;
    PRUint32 keyGenMechanism;
    PRInt32 primeBits;
    PK11SlotInfo *slot = nsnull;
    PK11RSAGenParams rsaParams;
    SECOidTag algTag;
    int keysize = 0;
    void *params;
    SECKEYPrivateKey *privateKey = nsnull;
    SECKEYPublicKey *publicKey = nsnull;
    CERTSubjectPublicKeyInfo *spkInfo = nsnull;
    PRArenaPool *arena = nsnull;
    SECStatus sec_rv = SECFailure;
    SECItem spkiItem;
    SECItem pkacItem;
    SECItem signedItem;
    CERTPublicKeyAndChallenge pkac;
    pkac.challenge.data = nsnull;
    nsIGeneratingKeypairInfoDialogs * dialogs;
    nsKeygenThread *KeygenRunnable = 0;
    nsCOMPtr<nsIKeygenThread> runnable;

    // Get the key size //
    for (size_t i = 0; i < number_of_key_size_choices; ++i) {
        if (aValue.Equals(mSECKeySizeChoiceList[i].name)) {
            keysize = mSECKeySizeChoiceList[i].size;
            break;
        }
    }
    if (!keysize) {
        goto loser;
    }

    arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
    if (!arena) {
        goto loser;
    }

    // Set the keygen mechanism
    if (aKeyType.IsEmpty() || aKeyType.LowerCaseEqualsLiteral("rsa")) {
        type = rsaKey;
        keyGenMechanism = CKM_RSA_PKCS_KEY_PAIR_GEN;
    } else if (aKeyType.LowerCaseEqualsLiteral("dsa")) {
        char * end;
        keyparamsString = ToNewCString(aKeyParams);
        if (!keyparamsString) {
            rv = NS_ERROR_OUT_OF_MEMORY;
            goto loser;
        }

        type = dsaKey;
        keyGenMechanism = CKM_DSA_KEY_PAIR_GEN;
        if (strcmp(keyparamsString, "null") == 0)
            goto loser;
        str = keyparamsString;
        PRBool found_match = PR_FALSE;
        do {
            end = strchr(str, ',');
            if (end != nsnull)
                *end = '\0';
            primeBits = pqg_prime_bits(str);
            if (keysize == primeBits) {
                found_match = PR_TRUE;
                break;
            }
            str = end + 1;
        } while (end != nsnull);
        if (!found_match) {
            goto loser;
        }
    } else if (aKeyType.LowerCaseEqualsLiteral("ec")) {
        keyparamsString = ToNewCString(aKeyParams);
        if (!keyparamsString) {
            rv = NS_ERROR_OUT_OF_MEMORY;
            goto loser;
        }

        type = ecKey;
        keyGenMechanism = CKM_EC_KEY_PAIR_GEN;
        /* ecParams are initialized later */
    } else {
        goto loser;
    }

    // Get the slot
    rv = GetSlot(keyGenMechanism, &slot);
    if (NS_FAILED(rv)) {
        goto loser;
    }
    switch (keyGenMechanism) {
    case CKM_RSA_PKCS_KEY_PAIR_GEN:
//.........这里部分代码省略.........