C++ nsAString类代码示例

nsresult
NS_NewDOMDocument(nsIDOMDocument** aInstancePtrResult,
                  const nsAString& aNamespaceURI, 
                  const nsAString& aQualifiedName, 
                  nsIDOMDocumentType* aDoctype,
                  nsIURI* aDocumentURI,
                  nsIURI* aBaseURI,
                  nsIPrincipal* aPrincipal,
                  bool aLoadedAsData,
                  nsIScriptGlobalObject* aEventObject,
                  DocumentFlavor aFlavor)
{
  // Note: can't require that aDocumentURI/aBaseURI/aPrincipal be non-null,
  // since at least one caller (XMLHttpRequest) doesn't have decent args to
  // pass in.
  
  nsresult rv;

  *aInstancePtrResult = nullptr;

  nsCOMPtr<nsIDocument> d;
  bool isHTML = false;
  bool isXHTML = false;
  if (aFlavor == DocumentFlavorSVG) {
    rv = NS_NewSVGDocument(getter_AddRefs(d));
  } else if (aFlavor == DocumentFlavorHTML) {
    rv = NS_NewHTMLDocument(getter_AddRefs(d));
    isHTML = true;
  } else if (aDoctype) {
    nsAutoString publicId, name;
    aDoctype->GetPublicId(publicId);
    if (publicId.IsEmpty()) {
      aDoctype->GetName(name);
    }
    if (name.EqualsLiteral("html") ||
        publicId.EqualsLiteral("-//W3C//DTD HTML 4.01//EN") ||
        publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Frameset//EN") ||
        publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Transitional//EN") ||
        publicId.EqualsLiteral("-//W3C//DTD HTML 4.0//EN") ||
        publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Frameset//EN") ||
        publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Transitional//EN")) {
      rv = NS_NewHTMLDocument(getter_AddRefs(d));
      isHTML = true;
    } else if (publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Strict//EN") ||
               publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Transitional//EN") ||
               publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Frameset//EN")) {
      rv = NS_NewHTMLDocument(getter_AddRefs(d));
      isHTML = true;
      isXHTML = true;
    }
    else if (publicId.EqualsLiteral("-//W3C//DTD SVG 1.1//EN")) {
      rv = NS_NewSVGDocument(getter_AddRefs(d));
    }
    // XXX Add support for XUL documents.
    else {
      rv = NS_NewXMLDocument(getter_AddRefs(d));
    }
  } else {
    rv = NS_NewXMLDocument(getter_AddRefs(d));
  }

  if (NS_FAILED(rv)) {
    return rv;
  }

  d->SetScriptHandlingObject(aEventObject);
  
  if (isHTML) {
    nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(d);
    NS_ASSERTION(htmlDoc, "HTML Document doesn't implement nsIHTMLDocument?");
    htmlDoc->SetCompatibilityMode(eCompatibility_FullStandards);
    htmlDoc->SetIsXHTML(isXHTML);
  }
  nsDocument* doc = static_cast<nsDocument*>(d.get());
  doc->SetLoadedAsData(aLoadedAsData);
  doc->nsDocument::SetDocumentURI(aDocumentURI);
  // Must set the principal first, since SetBaseURI checks it.
  doc->SetPrincipal(aPrincipal);
  doc->SetBaseURI(aBaseURI);

  // XMLDocuments and documents "created in memory" get to be UTF-8 by default,
  // unlike the legacy HTML mess
  doc->SetDocumentCharacterSet(NS_LITERAL_CSTRING("UTF-8"));
  
  if (aDoctype) {
    nsCOMPtr<nsIDOMNode> tmpNode;
    rv = doc->AppendChild(aDoctype, getter_AddRefs(tmpNode));
    NS_ENSURE_SUCCESS(rv, rv);
  }
  
  if (!aQualifiedName.IsEmpty()) {
    nsCOMPtr<nsIDOMElement> root;
    rv = doc->CreateElementNS(aNamespaceURI, aQualifiedName,
                              getter_AddRefs(root));
    NS_ENSURE_SUCCESS(rv, rv);

    nsCOMPtr<nsIDOMNode> tmpNode;

    rv = doc->AppendChild(root, getter_AddRefs(tmpNode));
    NS_ENSURE_SUCCESS(rv, rv);
//.........这里部分代码省略.........

RangedPtr<const PRUnichar>
SVGContentUtils::GetEndRangedPtr(const nsAString& aString)
{
  return RangedPtr<const PRUnichar>(aString.Data() + aString.Length(),
                                    aString.Data(), aString.Length());
}

NS_IMETHODIMP nsDBusHandlerApp::GetName(nsAString& aName)
{
  aName.Assign(mName);
  return NS_OK;
}

nsresult
nsXULMenubarAccessible::GetNameInternal(nsAString& aName)
{
  aName.AssignLiteral("Application");
  return NS_OK;
}

static int32_t
BlacklistFeatureToGfxFeature(const nsAString& aFeature)
{
  MOZ_ASSERT(!aFeature.IsEmpty());
  if (aFeature.EqualsLiteral("DIRECT2D"))
    return nsIGfxInfo::FEATURE_DIRECT2D;
  else if (aFeature.EqualsLiteral("DIRECT3D_9_LAYERS"))
    return nsIGfxInfo::FEATURE_DIRECT3D_9_LAYERS;
  else if (aFeature.EqualsLiteral("DIRECT3D_10_LAYERS"))
    return nsIGfxInfo::FEATURE_DIRECT3D_10_LAYERS;
  else if (aFeature.EqualsLiteral("DIRECT3D_10_1_LAYERS"))
    return nsIGfxInfo::FEATURE_DIRECT3D_10_1_LAYERS;
  else if (aFeature.EqualsLiteral("DIRECT3D_11_LAYERS"))
    return nsIGfxInfo::FEATURE_DIRECT3D_11_LAYERS;
  else if (aFeature.EqualsLiteral("DIRECT3D_11_ANGLE"))
    return nsIGfxInfo::FEATURE_DIRECT3D_11_ANGLE;
  else if (aFeature.EqualsLiteral("HARDWARE_VIDEO_DECODING"))
    return nsIGfxInfo::FEATURE_HARDWARE_VIDEO_DECODING;
  else if (aFeature.EqualsLiteral("OPENGL_LAYERS"))
    return nsIGfxInfo::FEATURE_OPENGL_LAYERS;
  else if (aFeature.EqualsLiteral("WEBGL_OPENGL"))
    return nsIGfxInfo::FEATURE_WEBGL_OPENGL;
  else if (aFeature.EqualsLiteral("WEBGL_ANGLE"))
    return nsIGfxInfo::FEATURE_WEBGL_ANGLE;
  else if (aFeature.EqualsLiteral("WEBGL_MSAA"))
    return nsIGfxInfo::FEATURE_WEBGL_MSAA;
  else if (aFeature.EqualsLiteral("STAGEFRIGHT"))
    return nsIGfxInfo::FEATURE_STAGEFRIGHT;
  else if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_ENCODE"))
    return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_ENCODE;
  else if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION_DECODE"))
    return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION_DECODE;
  else if (aFeature.EqualsLiteral("WEBRTC_HW_ACCELERATION"))
    return nsIGfxInfo::FEATURE_WEBRTC_HW_ACCELERATION;
  else if (aFeature.EqualsLiteral("CANVAS2D_ACCELERATION"))
      return nsIGfxInfo::FEATURE_CANVAS2D_ACCELERATION;

  // If we don't recognize the feature, it may be new, and something
  // this version doesn't understand.  So, nothing to do.  This is
  // different from feature not being specified at all, in which case
  // this method should not get called and we should continue with the
  // "all features" blocklisting.
  return -1;
}

/* readonly attribute wstring name; */
NS_IMETHODIMP
nsSchemaBuiltinType::GetName(nsAString& aName)
{
  switch (mBuiltinType) {
    case BUILTIN_TYPE_ANYTYPE:
      aName.AssignLiteral("anyType");
      break;
    case BUILTIN_TYPE_STRING:
      aName.AssignLiteral("string");
      break;
    case BUILTIN_TYPE_NORMALIZED_STRING:
      aName.AssignLiteral("normalizedString");
      break;
    case BUILTIN_TYPE_TOKEN:
      aName.AssignLiteral("token");
      break;
    case BUILTIN_TYPE_BYTE:
      aName.AssignLiteral("byte");
      break;
    case BUILTIN_TYPE_UNSIGNEDBYTE:
      aName.AssignLiteral("unsignedByte");
      break;
    case BUILTIN_TYPE_BASE64BINARY:
      aName.AssignLiteral("base64Binary");
      break;
    case BUILTIN_TYPE_HEXBINARY:
      aName.AssignLiteral("hexBinary");
      break;
    case BUILTIN_TYPE_INTEGER:
      aName.AssignLiteral("integer");
      break;
    case BUILTIN_TYPE_POSITIVEINTEGER:
      aName.AssignLiteral("positiveInteger");
      break;
    case BUILTIN_TYPE_NEGATIVEINTEGER:
      aName.AssignLiteral("negativeInteger");
      break;
    case BUILTIN_TYPE_NONNEGATIVEINTEGER:
      aName.AssignLiteral("nonNegativeInteger");
      break;
    case BUILTIN_TYPE_NONPOSITIVEINTEGER:
      aName.AssignLiteral("nonPositiveInteger");
      break;
    case BUILTIN_TYPE_INT:
      aName.AssignLiteral("int");
      break;
    case BUILTIN_TYPE_UNSIGNEDINT:
      aName.AssignLiteral("unsignedInt");
      break;
    case BUILTIN_TYPE_LONG:
      aName.AssignLiteral("long");
      break;
    case BUILTIN_TYPE_UNSIGNEDLONG:
      aName.AssignLiteral("unsignedLong");
      break;
    case BUILTIN_TYPE_SHORT:
      aName.AssignLiteral("short");
      break;
    case BUILTIN_TYPE_UNSIGNEDSHORT:
      aName.AssignLiteral("unsignedShort");
      break;
    case BUILTIN_TYPE_DECIMAL:
      aName.AssignLiteral("decimal");
      break;
    case BUILTIN_TYPE_FLOAT:
      aName.AssignLiteral("float");
      break;
    case BUILTIN_TYPE_DOUBLE:
      aName.AssignLiteral("double");
      break;
    case BUILTIN_TYPE_BOOLEAN:
      aName.AssignLiteral("boolean");
      break;
    case BUILTIN_TYPE_TIME:
      aName.AssignLiteral("time");
      break;
    case BUILTIN_TYPE_DATETIME:
      aName.AssignLiteral("dateTime");
      break;
    case BUILTIN_TYPE_DURATION:
      aName.AssignLiteral("duration");
      break;
    case BUILTIN_TYPE_DATE:
      aName.AssignLiteral("date");
      break;
    case BUILTIN_TYPE_GMONTH:
      aName.AssignLiteral("gMonth");
      break;
    case BUILTIN_TYPE_GYEAR:
      aName.AssignLiteral("gYear");
      break;
    case BUILTIN_TYPE_GYEARMONTH:
      aName.AssignLiteral("gYearMonth");
      break;
    case BUILTIN_TYPE_GDAY:
      aName.AssignLiteral("gDay");
      break;
    case BUILTIN_TYPE_GMONTHDAY:
      aName.AssignLiteral("gMonthDay");
//.........这里部分代码省略.........

/* static */
already_AddRefed<MediaEncoder>
MediaEncoder::CreateEncoder(const nsAString& aMIMEType, uint8_t aTrackTypes)
{
  if (!gMediaEncoderLog) {
    gMediaEncoderLog = PR_NewLogModule("MediaEncoder");
  }
  PROFILER_LABEL("MediaEncoder", "CreateEncoder",
    js::ProfileEntry::Category::OTHER);

  nsAutoPtr<ContainerWriter> writer;
  nsAutoPtr<AudioTrackEncoder> audioEncoder;
  nsAutoPtr<VideoTrackEncoder> videoEncoder;
  nsRefPtr<MediaEncoder> encoder;
  nsString mimeType;
  if (!aTrackTypes) {
    LOG(PR_LOG_ERROR, ("NO TrackTypes!!!"));
    return nullptr;
  }
#ifdef MOZ_WEBM_ENCODER
  else if (MediaEncoder::IsWebMEncoderEnabled() &&
          (aMIMEType.EqualsLiteral(VIDEO_WEBM) ||
          (aTrackTypes & ContainerWriter::CREATE_VIDEO_TRACK))) {
    if (aTrackTypes & ContainerWriter::CREATE_AUDIO_TRACK) {
      audioEncoder = new VorbisTrackEncoder();
      NS_ENSURE_TRUE(audioEncoder, nullptr);
    }
    videoEncoder = new VP8TrackEncoder();
    writer = new WebMWriter(aTrackTypes);
    NS_ENSURE_TRUE(writer, nullptr);
    NS_ENSURE_TRUE(videoEncoder, nullptr);
    mimeType = NS_LITERAL_STRING(VIDEO_WEBM);
  }
#endif //MOZ_WEBM_ENCODER
#ifdef MOZ_OMX_ENCODER
  else if (MediaEncoder::IsOMXEncoderEnabled() &&
          (aMIMEType.EqualsLiteral(VIDEO_MP4) ||
          (aTrackTypes & ContainerWriter::CREATE_VIDEO_TRACK))) {
    if (aTrackTypes & ContainerWriter::CREATE_AUDIO_TRACK) {
      audioEncoder = new OmxAACAudioTrackEncoder();
      NS_ENSURE_TRUE(audioEncoder, nullptr);
    }
    videoEncoder = new OmxVideoTrackEncoder();
    writer = new ISOMediaWriter(aTrackTypes);
    NS_ENSURE_TRUE(writer, nullptr);
    NS_ENSURE_TRUE(videoEncoder, nullptr);
    mimeType = NS_LITERAL_STRING(VIDEO_MP4);
  } else if (MediaEncoder::IsOMXEncoderEnabled() &&
            (aMIMEType.EqualsLiteral(AUDIO_3GPP))) {
    audioEncoder = new OmxAMRAudioTrackEncoder();
    NS_ENSURE_TRUE(audioEncoder, nullptr);

    writer = new ISOMediaWriter(aTrackTypes, ISOMediaWriter::TYPE_FRAG_3GP);
    NS_ENSURE_TRUE(writer, nullptr);
    mimeType = NS_LITERAL_STRING(AUDIO_3GPP);
  }
#endif // MOZ_OMX_ENCODER
  else if (MediaDecoder::IsOggEnabled() && MediaDecoder::IsOpusEnabled() &&
           (aMIMEType.EqualsLiteral(AUDIO_OGG) ||
           (aTrackTypes & ContainerWriter::CREATE_AUDIO_TRACK))) {
    writer = new OggWriter();
    audioEncoder = new OpusTrackEncoder();
    NS_ENSURE_TRUE(writer, nullptr);
    NS_ENSURE_TRUE(audioEncoder, nullptr);
    mimeType = NS_LITERAL_STRING(AUDIO_OGG);
  }
  else {
    LOG(PR_LOG_ERROR, ("Can not find any encoder to record this media stream"));
    return nullptr;
  }
  LOG(PR_LOG_DEBUG, ("Create encoder result:a[%d] v[%d] w[%d] mimeType = %s.",
                      audioEncoder != nullptr, videoEncoder != nullptr,
                      writer != nullptr, mimeType.get()));
  encoder = new MediaEncoder(writer.forget(), audioEncoder.forget(),
                             videoEncoder.forget(), mimeType);
  return encoder.forget();
}

NS_IMETHODIMP
Navigator::GetVendorSub(nsAString& aVendorSub)
{
  aVendorSub.Truncate();
  return NS_OK;
}

// performs a locale sensitive date formatting operation on the struct tm parameter
nsresult nsDateTimeFormatWin::FormatTMTime(nsILocale* locale, 
                                           const nsDateFormatSelector  dateFormatSelector, 
                                           const nsTimeFormatSelector timeFormatSelector, 
                                           const struct tm*  tmTime, 
                                           nsAString& stringOut)
{
  SYSTEMTIME system_time;
  DWORD dwFlags_Date = 0, dwFlags_Time = 0;
  int dateLen, timeLen;
  char16_t dateBuffer[NSDATETIMEFORMAT_BUFFER_LEN], timeBuffer[NSDATETIMEFORMAT_BUFFER_LEN];

  // set up locale data
  (void) Initialize(locale);

  // Map tm to SYSTEMTIME
  system_time.wYear = 1900 + tmTime->tm_year;
  system_time.wMonth = tmTime->tm_mon + 1;
  system_time.wDayOfWeek = tmTime->tm_wday;
  system_time.wDay = tmTime->tm_mday;
  system_time.wHour = tmTime->tm_hour;
  system_time.wMinute = tmTime->tm_min;
  system_time.wSecond = tmTime->tm_sec;
  system_time.wMilliseconds = 0;

  // Map to WinAPI date format
  switch (dateFormatSelector) {
  case kDateFormatLong:
    dwFlags_Date = DATE_LONGDATE;
    break;
  case kDateFormatShort:
    dwFlags_Date = DATE_SHORTDATE;
    break;
  case kDateFormatWeekday:
    dwFlags_Date = 0;
    break;
  case kDateFormatYearMonth:
    dwFlags_Date = 0;     // TODO:only availabe NT5
    break;
  }

  // Map to WinAPI time format
  switch (timeFormatSelector) {
  case kTimeFormatSeconds:
    dwFlags_Time = 0;
    break;
  case kTimeFormatNoSeconds:
    dwFlags_Time = TIME_NOSECONDS;
    break;
  case kTimeFormatSecondsForce24Hour:
    dwFlags_Time = TIME_FORCE24HOURFORMAT;
    break;
  case kTimeFormatNoSecondsForce24Hour:
    dwFlags_Time = TIME_NOSECONDS + TIME_FORCE24HOURFORMAT;
    break;
  }

  // Call GetDateFormatW
  if (dateFormatSelector == kDateFormatNone) {
    dateLen = 0;
  }
  else {
    if (dateFormatSelector == kDateFormatYearMonth) {
      dateLen = nsGetDateFormatW(0, &system_time, "yyyy/MM", 
                                 dateBuffer, NSDATETIMEFORMAT_BUFFER_LEN);
    }
    else if (dateFormatSelector == kDateFormatWeekday) {
      dateLen = nsGetDateFormatW(0, &system_time, "ddd", 
                                 dateBuffer, NSDATETIMEFORMAT_BUFFER_LEN);
    }
    else {
      dateLen = nsGetDateFormatW(dwFlags_Date, &system_time, nullptr,
                                 dateBuffer, NSDATETIMEFORMAT_BUFFER_LEN);
    }
    if (dateLen != 0) {
      dateLen--;  // Since the count includes the terminating null.
    }
  }

  // Call GetTimeFormatW
  if (timeFormatSelector == kTimeFormatNone) {
    timeLen = 0;
  }
  else {
    timeLen = nsGetTimeFormatW(dwFlags_Time, &system_time, nullptr, 
                               timeBuffer, NSDATETIMEFORMAT_BUFFER_LEN);
    if (timeLen != 0) {
      timeLen--;  // Since the count includes the terminating null.
    }
  }

  NS_ASSERTION(NSDATETIMEFORMAT_BUFFER_LEN >= (uint32_t) (dateLen + 1), "internal date buffer is not large enough");
  NS_ASSERTION(NSDATETIMEFORMAT_BUFFER_LEN >= (uint32_t) (timeLen + 1), "internal time buffer is not large enough");

  // Copy the result
  stringOut.Truncate();
  if (dateLen != 0 && timeLen != 0) {
    stringOut.Assign(dateBuffer, dateLen);
    stringOut.Append((char16_t *)(L" "), 1);
    stringOut.Append(timeBuffer, timeLen);
//.........这里部分代码省略.........

void HTMLLabelAccessible::ActionNameAt(uint8_t aIndex, nsAString& aName) {
  if (aIndex == 0) {
    if (nsCoreUtils::IsLabelWithControl(mContent)) aName.AssignLiteral("click");
  }
}

/* static */ nsresult
nsEventDispatcher::CreateEvent(nsPresContext* aPresContext,
                               nsEvent* aEvent,
                               const nsAString& aEventType,
                               nsIDOMEvent** aDOMEvent)
{
  *aDOMEvent = nullptr;

  if (aEvent) {
    switch(aEvent->eventStructType) {
    case NS_MUTATION_EVENT:
      return NS_NewDOMMutationEvent(aDOMEvent, aPresContext,
                                    static_cast<nsMutationEvent*>(aEvent));
    case NS_GUI_EVENT:
    case NS_SCROLLPORT_EVENT:
    case NS_UI_EVENT:
      return NS_NewDOMUIEvent(aDOMEvent, aPresContext,
                              static_cast<nsGUIEvent*>(aEvent));
    case NS_SCROLLAREA_EVENT:
      return NS_NewDOMScrollAreaEvent(aDOMEvent, aPresContext,
                                      static_cast<nsScrollAreaEvent *>(aEvent));
    case NS_KEY_EVENT:
      return NS_NewDOMKeyboardEvent(aDOMEvent, aPresContext,
                                    static_cast<nsKeyEvent*>(aEvent));
    case NS_COMPOSITION_EVENT:
      return NS_NewDOMCompositionEvent(
        aDOMEvent, aPresContext, static_cast<nsCompositionEvent*>(aEvent));
    case NS_MOUSE_EVENT:
      return NS_NewDOMMouseEvent(aDOMEvent, aPresContext,
                                 static_cast<nsInputEvent*>(aEvent));
    case NS_MOUSE_SCROLL_EVENT:
      return NS_NewDOMMouseScrollEvent(aDOMEvent, aPresContext,
                                 static_cast<nsInputEvent*>(aEvent));
    case NS_WHEEL_EVENT:
      return NS_NewDOMWheelEvent(aDOMEvent, aPresContext,
                                 static_cast<widget::WheelEvent*>(aEvent));
    case NS_DRAG_EVENT:
      return NS_NewDOMDragEvent(aDOMEvent, aPresContext,
                                 static_cast<nsDragEvent*>(aEvent));
    case NS_TEXT_EVENT:
      return NS_NewDOMTextEvent(aDOMEvent, aPresContext,
                                static_cast<nsTextEvent*>(aEvent));
    case NS_SVG_EVENT:
      return NS_NewDOMSVGEvent(aDOMEvent, aPresContext,
                               aEvent);
    case NS_SVGZOOM_EVENT:
      return NS_NewDOMSVGZoomEvent(aDOMEvent, aPresContext,
                                   static_cast<nsGUIEvent*>(aEvent));
    case NS_SMIL_TIME_EVENT:
      return NS_NewDOMTimeEvent(aDOMEvent, aPresContext, aEvent);

    case NS_COMMAND_EVENT:
      return NS_NewDOMCommandEvent(aDOMEvent, aPresContext,
                                   static_cast<nsCommandEvent*>(aEvent));
    case NS_SIMPLE_GESTURE_EVENT:
      return NS_NewDOMSimpleGestureEvent(aDOMEvent, aPresContext,
                                         static_cast<nsSimpleGestureEvent*>(aEvent));
    case NS_TOUCH_EVENT:
      return NS_NewDOMTouchEvent(aDOMEvent, aPresContext,
                                 static_cast<nsTouchEvent*>(aEvent));
    case NS_TRANSITION_EVENT:
      return NS_NewDOMTransitionEvent(aDOMEvent, aPresContext,
                                      static_cast<nsTransitionEvent*>(aEvent));
    case NS_ANIMATION_EVENT:
      return NS_NewDOMAnimationEvent(aDOMEvent, aPresContext,
                                     static_cast<nsAnimationEvent*>(aEvent));
    default:
      // For all other types of events, create a vanilla event object.
      return NS_NewDOMEvent(aDOMEvent, aPresContext, aEvent);
    }
  }

  // And if we didn't get an event, check the type argument.

  if (aEventType.LowerCaseEqualsLiteral("mouseevent") ||
      aEventType.LowerCaseEqualsLiteral("mouseevents") ||
      aEventType.LowerCaseEqualsLiteral("popupevents"))
    return NS_NewDOMMouseEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("mousescrollevents"))
    return NS_NewDOMMouseScrollEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("dragevent") ||
      aEventType.LowerCaseEqualsLiteral("dragevents"))
    return NS_NewDOMDragEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("keyboardevent") ||
      aEventType.LowerCaseEqualsLiteral("keyevents"))
    return NS_NewDOMKeyboardEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("compositionevent"))
    return NS_NewDOMCompositionEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("mutationevent") ||
        aEventType.LowerCaseEqualsLiteral("mutationevents"))
    return NS_NewDOMMutationEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("textevent") ||
      aEventType.LowerCaseEqualsLiteral("textevents"))
    return NS_NewDOMTextEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("popupblockedevents"))
    return NS_NewDOMPopupBlockedEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("deviceorientationevent"))
    return NS_NewDOMDeviceOrientationEvent(aDOMEvent, aPresContext, nullptr);
  if (aEventType.LowerCaseEqualsLiteral("devicemotionevent"))
    return NS_NewDOMDeviceMotionEvent(aDOMEvent, aPresContext, nullptr);
//.........这里部分代码省略.........

NS_IMETHODIMP
nsDOMFile::GetAsDataURL(nsAString &aResult)
{
    aResult.AssignLiteral("data:");

    nsresult rv;
    if (!mContentType.Length()) {
        nsCOMPtr<nsIMIMEService> mimeService =
            do_GetService(NS_MIMESERVICE_CONTRACTID, &rv);
        NS_ENSURE_SUCCESS(rv, rv);

        nsCAutoString contentType;
        rv = mimeService->GetTypeFromFile(mFile, contentType);
        if (NS_SUCCEEDED(rv)) {
            CopyUTF8toUTF16(contentType, mContentType);
        }
    }

    if (mContentType.Length()) {
        aResult.Append(mContentType);
    } else {
        aResult.AppendLiteral("application/octet-stream");
    }
    aResult.AppendLiteral(";base64,");

    nsCOMPtr<nsIInputStream> stream;
    rv = GetInternalStream(getter_AddRefs(stream));
    NS_ENSURE_SUCCESS(rv, DOMFileResult(rv));

    char readBuf[4096];
    PRUint32 leftOver = 0;
    PRUint32 numRead;
    do {
        rv = stream->Read(readBuf + leftOver, sizeof(readBuf) - leftOver, &numRead);
        NS_ENSURE_SUCCESS(rv, DOMFileResult(rv));

        PRUint32 numEncode = numRead + leftOver;
        leftOver = 0;

        if (numEncode == 0) break;

        // unless this is the end of the file, encode in multiples of 3
        if (numRead > 0) {
            leftOver = numEncode % 3;
            numEncode -= leftOver;
        }

        // out buffer should be at least 4/3rds the read buf, plus a terminator
        char *base64 = PL_Base64Encode(readBuf, numEncode, nsnull);
        if (!base64) {
            return DOMFileResult(NS_ERROR_OUT_OF_MEMORY);
        }
        nsDependentCString str(base64);
        PRUint32 strLen = str.Length();
        PRUint32 oldLength = aResult.Length();
        AppendASCIItoUTF16(str, aResult);
        PR_Free(base64);
        if (aResult.Length() - oldLength != strLen) {
            return DOMFileResult(NS_ERROR_OUT_OF_MEMORY);
        }

        if (leftOver) {
            memmove(readBuf, readBuf + numEncode, leftOver);
        }
    } while (numRead > 0);

    return NS_OK;
}

nsresult
BluetoothService::HandleSettingsChanged(const nsAString& aData)
{
  MOZ_ASSERT(NS_IsMainThread());

  // The string that we're interested in will be a JSON string that looks like:
  //  {"key":"bluetooth.enabled","value":true}

  JSContext* cx = nsContentUtils::GetSafeJSContext();
  if (!cx) {
    return NS_OK;
  }

  JS::Value val;
  if (!JS_ParseJSON(cx, aData.BeginReading(), aData.Length(), &val)) {
    return JS_ReportPendingException(cx) ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
  }

  if (!val.isObject()) {
    return NS_OK;
  }

  JSObject& obj(val.toObject());

  JS::Value key;
  if (!JS_GetProperty(cx, &obj, "key", &key)) {
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    return NS_ERROR_OUT_OF_MEMORY;
  }

  if (!key.isString()) {
    return NS_OK;
  }

  JSBool match;
  if (!JS_StringEqualsAscii(cx, key.toString(), BLUETOOTH_ENABLED_SETTING,
                            &match)) {
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    return NS_ERROR_OUT_OF_MEMORY;
  }

  if (!match) {
    return NS_OK;
  }

  JS::Value value;
  if (!JS_GetProperty(cx, &obj, "value", &value)) {
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    return NS_ERROR_OUT_OF_MEMORY;
  }

  if (!value.isBoolean()) {
    MOZ_ASSERT(false, "Expecting a boolean for 'bluetooth.enabled'!");
    return NS_ERROR_UNEXPECTED;
  }

  if (mSettingsCheckInProgress) {
    // Somehow the setting for bluetooth has been flipped before our first
    // settings check completed. Flip this flag so that we ignore the result
    // of that check whenever it finishes.
    mSettingsCheckInProgress = false;
  }

  if (value.toBoolean() == IsEnabled()) {
    // Nothing to do here.
    return NS_OK;
  }

  nsresult rv;

  if (IsEnabled()) {
    rv = StartStopBluetooth(false);
    NS_ENSURE_SUCCESS(rv, rv);

    return NS_OK;
  }

  rv = StartStopBluetooth(true);
  NS_ENSURE_SUCCESS(rv, rv);

  return NS_OK;
}

NS_IMETHODIMP
nsCommandLine::ResolveFile(const nsAString& aArgument, nsIFile* *aResult)
{
  NS_ENSURE_TRUE(mWorkingDir, NS_ERROR_NOT_INITIALIZED);

  // This is some seriously screwed-up code. nsIFile.appendRelativeNativePath
  // explicitly does not accept .. or . path parts, but that is exactly what we
  // need here. So we hack around it.

  nsresult rv;

#if defined(MOZ_WIDGET_COCOA)
  nsCOMPtr<nsILocalFileMac> lfm (do_QueryInterface(mWorkingDir));
  NS_ENSURE_TRUE(lfm, NS_ERROR_NO_INTERFACE);

  nsCOMPtr<nsILocalFileMac> newfile (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
  NS_ENSURE_TRUE(newfile, NS_ERROR_OUT_OF_MEMORY);

  CFURLRef baseurl;
  rv = lfm->GetCFURL(&baseurl);
  NS_ENSURE_SUCCESS(rv, rv);

  nsAutoCString path;
  NS_CopyUnicodeToNative(aArgument, path);

  CFURLRef newurl =
    CFURLCreateFromFileSystemRepresentationRelativeToBase(nullptr, (const UInt8*) path.get(),
                                                          path.Length(),
                                                          true, baseurl);

  CFRelease(baseurl);

  rv = newfile->InitWithCFURL(newurl);
  CFRelease(newurl);
  if (NS_FAILED(rv)) return rv;

  newfile.forget(aResult);
  return NS_OK;

#elif defined(XP_UNIX)
  nsCOMPtr<nsIFile> lf (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
  NS_ENSURE_TRUE(lf, NS_ERROR_OUT_OF_MEMORY);

  if (aArgument.First() == '/') {
    // absolute path
    rv = lf->InitWithPath(aArgument);
    if (NS_FAILED(rv)) return rv;

    NS_ADDREF(*aResult = lf);
    return NS_OK;
  }

  nsAutoCString nativeArg;
  NS_CopyUnicodeToNative(aArgument, nativeArg);

  nsAutoCString newpath;
  mWorkingDir->GetNativePath(newpath);

  newpath.Append('/');
  newpath.Append(nativeArg);

  rv = lf->InitWithNativePath(newpath);
  if (NS_FAILED(rv)) return rv;

  rv = lf->Normalize();
  if (NS_FAILED(rv)) return rv;

  lf.forget(aResult);
  return NS_OK;

#elif defined(XP_WIN32)
  nsCOMPtr<nsIFile> lf (do_CreateInstance(NS_LOCAL_FILE_CONTRACTID));
  NS_ENSURE_TRUE(lf, NS_ERROR_OUT_OF_MEMORY);

  rv = lf->InitWithPath(aArgument);
  if (NS_FAILED(rv)) {
    // If it's a relative path, the Init is *going* to fail. We use string magic and
    // win32 _fullpath. Note that paths of the form "\Relative\To\CurDrive" are
    // going to fail, and I haven't figured out a way to work around this without
    // the PathCombine() function, which is not available in plain win95/nt4

    nsAutoString fullPath;
    mWorkingDir->GetPath(fullPath);

    fullPath.Append('\\');
    fullPath.Append(aArgument);

    WCHAR pathBuf[MAX_PATH];
    if (!_wfullpath(pathBuf, fullPath.get(), MAX_PATH))
      return NS_ERROR_FAILURE;

    rv = lf->InitWithPath(nsDependentString(pathBuf));
    if (NS_FAILED(rv)) return rv;
  }
  lf.forget(aResult);
  return NS_OK;

#else
#error Need platform-specific logic here.
#endif
//.........这里部分代码省略.........

NS_IMETHODIMP
nsXMLProcessingInstruction::GetNodeName(nsAString& aNodeName)
{
  aNodeName.Assign(mTarget);
  return NS_OK;
}