C++ nsString::get方法代码示例

bool
XPCShellEnvironment::EvaluateString(const nsString& aString,
                                    nsString* aResult)
{
  XPCShellEnvironment* env = Environment(mCx);
  XPCShellEnvironment::AutoContextPusher pusher(env);

  JSAutoRequest ar(mCx);

  JS_ClearPendingException(mCx);

  JSObject* global = GetGlobalObject();

  JSAutoEnterCompartment ac;
  if (!ac.enter(mCx, global)) {
      NS_ERROR("Failed to enter compartment!");
      return false;
  }

  JSScript* script =
      JS_CompileUCScriptForPrincipals(mCx, global, GetPrincipal(),
                                      aString.get(), aString.Length(),
                                      "typein", 0);
  if (!script) {
     return false;
  }

  if (!ShouldCompileOnly()) {
      if (aResult) {
          aResult->Truncate();
      }

      jsval result;
      JSBool ok = JS_ExecuteScript(mCx, global, script, &result);
      if (ok && result != JSVAL_VOID) {
          JSErrorReporter old = JS_SetErrorReporter(mCx, NULL);
          JSString* str = JS_ValueToString(mCx, result);
          nsDependentJSString depStr;
          if (str)
              depStr.init(mCx, str);
          JS_SetErrorReporter(mCx, old);

          if (!depStr.IsEmpty() && aResult) {
              aResult->Assign(depStr);
          }
      }
  }

  return true;
}

bool
JetpackChild::RecvEvalScript(const nsString& code)
{
  JSAutoRequest request(mCx);

  JSObject *global = JS_GetGlobalObject(mCx);
  JSAutoEnterCompartment ac;
  if (!ac.enter(mCx, global))
    return false;

  jsval ignored;
  (void) JS_EvaluateUCScript(mCx, global, code.get(),
                             code.Length(), "", 1, &ignored);
  return true;
}

gluezilla_setString (Handle *instance, nsString & ret)
{
	Widget *widget = reinterpret_cast<Widget *> (instance);
	nsCOMPtr<nsIDOMWindow> domWindow;
	
	widget->browserWindow->webBrowser->GetContentDOMWindow( getter_AddRefs (domWindow) );
	nsCOMPtr<nsIDOMDocument> domDoc;
	domWindow->GetDocument (getter_AddRefs(domDoc));
	nsCOMPtr<nsIDOMNode> node;
	domDoc->GetFirstChild (getter_AddRefs (node));
	node->GetLocalName (ret);

	const PRUnichar * s = (PRUnichar *)ret.get ();
	
}

nsresult Conv_FE_06_WithReverse(const nsString& aSrc, nsString& aDst)
{
  PRUnichar *aSrcUnichars = (PRUnichar *)aSrc.get();
  PRBool foundArabic = PR_FALSE;
  PRUint32 i, endArabic, beginArabic, size;
  beginArabic = 0;
  size = aSrc.Length();
  aDst.Truncate();
  for (endArabic=0;endArabic<size;endArabic++) {
    if (aSrcUnichars[endArabic] == 0x0000) 
      break; // no need to convert char after the NULL

    while( (IS_FE_CHAR(aSrcUnichars[endArabic]))||
           (IS_ARABIC_CHAR(aSrcUnichars[endArabic]))||
           (IS_ARABIC_DIGIT(aSrcUnichars[endArabic]))||
           (aSrcUnichars[endArabic]==0x0020)) 
    {
      if(! foundArabic ) {
        beginArabic=endArabic;
        foundArabic= PR_TRUE;
      }
      endArabic++;
    }
    if(foundArabic) {
      endArabic--;
      for (i=endArabic; i>=beginArabic; i--) {
        if(IS_FE_CHAR(aSrcUnichars[i])) {
          //ahmed for the bug of lamalf
          aDst += PresentationToOriginal(aSrcUnichars[i], 0);
          if (PresentationToOriginal(aSrcUnichars[i], 1)) {
            // Two characters, we have to resize the buffer :(
             aDst += PresentationToOriginal(aSrcUnichars[i], 1);
          } // if expands to 2 char
        } else {
          // do we need to check the following if ?
          if((IS_ARABIC_CHAR(aSrcUnichars[i]))||
             (IS_ARABIC_DIGIT(aSrcUnichars[i]))||
             (aSrcUnichars[i]==0x0020))
            aDst += aSrcUnichars[i];
        }     
      }
    } else {
      aDst += aSrcUnichars[endArabic]; 
    }
    foundArabic=PR_FALSE;
  }// for : loop the buffer
  return NS_OK;
}

static void splitString(nsString& aSource, nsString& aTarget)
{
    aTarget.Truncate() ;
    PRInt32 offset = aSource.FindChar('\n') ;
    
    if (offset >= 0) { 
        const PRUnichar *source = aSource.get() + offset + 1 ;
        
        while (*source) {
            if (*source == '\n' || *source == '\r') { aTarget.Append(PRUnichar(' ')) ; }
            else { aTarget.Append(*source) ; }
            ++ source ;
        }
        aSource.SetLength(offset); 
    }
}

bool
XPCShellEnvironment::EvaluateString(const nsString& aString,
                                    nsString* aResult)
{
  XPCShellEnvironment* env = Environment(mCx);
  nsCxPusher pusher;
  pusher.Push(env->GetContext());

  JSAutoRequest ar(mCx);

  JS_ClearPendingException(mCx);

  JS::Rooted<JSObject*> global(mCx, GetGlobalObject());
  JSAutoCompartment ac(mCx, global);

  JSScript* script =
      JS_CompileUCScriptForPrincipals(mCx, global, GetPrincipal(),
                                      aString.get(), aString.Length(),
                                      "typein", 0);
  if (!script) {
     return false;
  }

  if (!ShouldCompileOnly()) {
      if (aResult) {
          aResult->Truncate();
      }

      JS::Rooted<JS::Value> result(mCx);
      JSBool ok = JS_ExecuteScript(mCx, global, script, result.address());
      if (ok && result != JSVAL_VOID) {
          JSErrorReporter old = JS_SetErrorReporter(mCx, NULL);
          JSString* str = JS_ValueToString(mCx, result);
          nsDependentJSString depStr;
          if (str)
              depStr.init(mCx, str);
          JS_SetErrorReporter(mCx, old);

          if (!depStr.IsEmpty() && aResult) {
              aResult->Assign(depStr);
          }
      }
  }

  return true;
}

void
ErrorReporter::ReportUnexpected(const char *aMessage,
                                const nsString &aParam,
                                const nsString &aValue)
{
  if (!ShouldReportErrors()) return;

  nsAutoString qparam;
  nsStyleUtil::AppendEscapedCSSIdent(aParam, qparam);
  const char16_t *params[2] = { qparam.get(), aValue.get() };

  nsAutoString str;
  sStringBundle->FormatStringFromName(NS_ConvertASCIItoUTF16(aMessage).get(),
                                      params, ArrayLength(params),
                                      getter_Copies(str));
  AddToError(str);
}

nsresult
nsMsgPrintEngine::FireThatLoadOperation(const nsString& uri)
{
  nsresult rv;
  
  nsCString uriCStr;
  LossyCopyUTF16toASCII(uri, uriCStr);

  nsCOMPtr <nsIMsgMessageService> messageService;
  // if this is a data: url, skip it, because 
  // we've already got something we can print
  // and we know it is not a message.
  //
  // if this an about:blank url, skip it, because
  // ...
  //
  // if this is an addbook: url, skip it, because
  // we know that isn't a message.
  //
  // if this is a message part (or .eml file on disk)
  // skip it, because we don't want to print the parent message
  // we want to print the part.
  // example:  imap://[email protected]:143/fetch%3EUID%3E/INBOX%3E180958?part=1.1.2&type=application/x-message-display&filename=test"
  if (!StringBeginsWith(uriCStr, NS_LITERAL_CSTRING(DATA_URL_PREFIX)) &&
      !StringBeginsWith(uriCStr, NS_LITERAL_CSTRING(ADDBOOK_URL_PREFIX)) &&
      !uriCStr.EqualsLiteral("about:blank") && 
      uriCStr.Find(NS_LITERAL_CSTRING("type=application/x-message-display")) == -1) {
    rv = GetMessageServiceFromURI(uriCStr, getter_AddRefs(messageService));
  }

  if (NS_SUCCEEDED(rv) && messageService)
    rv = messageService->DisplayMessageForPrinting(uriCStr.get(), mDocShell, nsnull, nsnull, nsnull);
  //If it's not something we know about, then just load try loading it directly.
  else
  {
    nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(mDocShell));
    if (webNav)
      rv = webNav->LoadURI(uri.get(),                        // URI string
                           nsIWebNavigation::LOAD_FLAGS_NONE, // Load flags
                           nsnull,                            // Referring URI
                           nsnull,                            // Post data
                           nsnull);                           // Extra headers
  }
  return rv;
}

NS_GFX_(bool) NS_HexToRGB(const nsString& aColorSpec,
                                       nscolor* aResult)
{
  const PRUnichar* buffer = aColorSpec.get();

  int nameLen = aColorSpec.Length();
  if ((nameLen == 3) || (nameLen == 6)) {
    // Make sure the digits are legal
    for (int i = 0; i < nameLen; i++) {
      PRUnichar ch = buffer[i];
      if (((ch >= '0') && (ch <= '9')) ||
          ((ch >= 'a') && (ch <= 'f')) ||
          ((ch >= 'A') && (ch <= 'F'))) {
        // Legal character
        continue;
      }
      // Whoops. Illegal character.
      return false;
    }

    // Convert the ascii to binary
    int dpc = ((3 == nameLen) ? 1 : 2);
    // Translate components from hex to binary
    int r = ComponentValue(buffer, nameLen, 0, dpc);
    int g = ComponentValue(buffer, nameLen, 1, dpc);
    int b = ComponentValue(buffer, nameLen, 2, dpc);
    if (dpc == 1) {
      // Scale single digit component to an 8 bit value. Replicate the
      // single digit to compute the new value.
      r = (r << 4) | r;
      g = (g << 4) | g;
      b = (b << 4) | b;
    }
    NS_ASSERTION((r >= 0) && (r <= 255), "bad r");
    NS_ASSERTION((g >= 0) && (g <= 255), "bad g");
    NS_ASSERTION((b >= 0) && (b <= 255), "bad b");
    *aResult = NS_RGB(r, g, b);
    return true;
  }

  // Improperly formatted color value
  return false;
}

// We store the records in files in the system temp dir.
static nsresult
GetGMPStorageDir(nsIFile** aTempDir, const nsString& aOrigin)
{
  if (NS_WARN_IF(!aTempDir)) {
    return NS_ERROR_INVALID_ARG;
  }

  // Directory service is main thread only...
  nsRefPtr<GetTempDirTask> task = new GetTempDirTask();
  nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
  mozilla::SyncRunnable::DispatchToThread(mainThread, task);

  nsCOMPtr<nsIFile> tmpFile;
  nsresult rv = NS_NewLocalFile(task->mPath, false, getter_AddRefs(tmpFile));
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return rv;
  }

  rv = tmpFile->AppendNative(nsDependentCString("mozilla-gmp-storage"));
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return rv;
  }

  // TODO: When aOrigin is the same node-id as the GMP sees in the child
  // process (a UUID or somesuch), we can just append it un-hashed here.
  // This should reduce the chance of hash collsions exposing data.
  nsAutoString nodeIdHash;
  nodeIdHash.AppendInt(HashString(static_cast<const char16_t*>(aOrigin.get())));
  rv = tmpFile->Append(nodeIdHash);
  if (NS_WARN_IF(NS_FAILED(rv))) {
    return rv;
  }

  rv = tmpFile->Create(nsIFile::DIRECTORY_TYPE, 0700);
  if (rv != NS_ERROR_FILE_ALREADY_EXISTS && NS_WARN_IF(NS_FAILED(rv))) {
    return rv;
  }

  tmpFile.forget(aTempDir);

  return NS_OK;
}

nsresult
nsAddbookProtocolHandler::GenerateXMLOutputChannel( nsString &aOutput,
        nsIAddbookUrl *addbookUrl,
        nsIURI *aURI,
        nsIChannel **_retval)
{
    nsIChannel                *channel;
    nsresult rv;
    nsCOMPtr<nsIStringInputStream> inStr(do_CreateInstance("@mozilla.org/io/string-input-stream;1", &rv));
    NS_ENSURE_SUCCESS(rv, rv);

    NS_ConvertUTF16toUTF8 utf8String(aOutput.get());

    rv = inStr->SetData(utf8String.get(), utf8String.Length());

    rv = NS_NewInputStreamChannel(&channel, aURI, inStr,
                                  NS_LITERAL_CSTRING("text/xml"));
    NS_ENSURE_SUCCESS(rv, rv);

    *_retval = channel;
    return rv;
}

// static
already_AddRefed<nsStringBuffer>
nsCSSValue::BufferFromString(const nsString& aValue)
{
  nsStringBuffer* buffer = nsStringBuffer::FromString(aValue);
  if (buffer) {
    buffer->AddRef();
    return buffer;
  }
  
  PRUnichar length = aValue.Length();

  // NOTE: Alloc prouduces a new, already-addref'd (refcnt = 1) buffer.
  buffer = nsStringBuffer::Alloc((length + 1) * sizeof(PRUnichar));
  if (NS_LIKELY(buffer != 0)) {
    PRUnichar* data = static_cast<PRUnichar*>(buffer->Data());
    nsCharTraits<PRUnichar>::copy(data, aValue.get(), length);
    // Null-terminate.
    data[length] = 0;
  }

  return buffer;
}

void
HttpChannelChild::OnStatus(const nsresult& status,
                           const nsString& statusArg)
{
  LOG(("HttpChannelChild::OnStatus [this=%p status=%x]\n", this, status));

  if (mCanceled)
    return;

  // cache the progress sink so we don't have to query for it each time.
  if (!mProgressSink)
    GetCallback(mProgressSink);

  AutoEventEnqueuer ensureSerialDispatch(this);
  
  // block socket status event after Cancel or OnStopRequest has been called.
  if (mProgressSink && NS_SUCCEEDED(mStatus) && mIsPending && 
      !(mLoadFlags & LOAD_BACKGROUND)) 
  {
    mProgressSink->OnStatus(this, nsnull, status, statusArg.get());
  }
}

JSBool
TestShellCommandParent::RunCallback(const nsString& aResponse)
{
  NS_ENSURE_TRUE(*mCallback.ToJSValPtr() != JSVAL_NULL && mCx, JS_FALSE);

  JSAutoRequest ar(mCx);
  NS_ENSURE_TRUE(mCallback.ToJSObject(), JS_FALSE);
  JSAutoCompartment ac(mCx, mCallback.ToJSObject());
  JS::Rooted<JSObject*> global(mCx, JS::CurrentGlobalOrNull(mCx));

  JSString* str = JS_NewUCStringCopyN(mCx, aResponse.get(), aResponse.Length());
  NS_ENSURE_TRUE(str, JS_FALSE);

  JS::Rooted<JS::Value> strVal(mCx, JS::StringValue(str));

  JS::Rooted<JS::Value> rval(mCx);
  JSBool ok = JS_CallFunctionValue(mCx, global, mCallback, 1, strVal.address(),
                                   rval.address());
  NS_ENSURE_TRUE(ok, JS_FALSE);

  return JS_TRUE;
}

bool
XPCShellEnvironment::EvaluateString(const nsString& aString,
                                    nsString* aResult)
{
  AutoSafeJSContext cx;
  JS::Rooted<JSObject*> global(cx, GetGlobalObject());
  JSAutoCompartment ac(cx, global);

  JS::CompileOptions options(cx);
  options.setFileAndLine("typein", 0)
         .setPrincipals(GetPrincipal());
  JSScript* script = JS_CompileUCScript(cx, global, aString.get(),
                                        aString.Length(), options);
  if (!script) {
     return false;
  }

  if (aResult) {
      aResult->Truncate();
  }

  JS::Rooted<JS::Value> result(cx);
  bool ok = JS_ExecuteScript(cx, global, script, result.address());
  if (ok && result != JSVAL_VOID) {
      JSErrorReporter old = JS_SetErrorReporter(cx, nullptr);
      JSString* str = JS::ToString(cx, result);
      nsDependentJSString depStr;
      if (str)
          depStr.init(cx, str);
      JS_SetErrorReporter(cx, old);

      if (!depStr.IsEmpty() && aResult) {
          aResult->Assign(depStr);
      }
  }

  return true;
}