C++ String::isEmpty方法代码示例

void QNetworkReplyHandler::sendResponseIfNeeded()
{
    m_shouldSendResponse = (m_loadMode != LoadNormal);
    if (m_shouldSendResponse)
        return;

    if (m_reply->error())
        return;

    if (m_responseSent || !m_resourceHandle)
        return;
    m_responseSent = true;

    ResourceHandleClient* client = m_resourceHandle->client();
    if (!client)
        return;

    WebCore::String contentType = m_reply->header(QNetworkRequest::ContentTypeHeader).toString();
    WebCore::String encoding = extractCharsetFromMediaType(contentType);
    WebCore::String mimeType = extractMIMETypeFromMediaType(contentType);

    if (mimeType.isEmpty()) {
        // let's try to guess from the extension
        QString extension = m_reply->url().path();
        int index = extension.lastIndexOf(QLatin1Char('.'));
        if (index > 0) {
            extension = extension.mid(index + 1);
            mimeType = MIMETypeRegistry::getMIMETypeForExtension(extension);
        }
    }

    KURL url(m_reply->url());
    ResourceResponse response(url, mimeType,
                              m_reply->header(QNetworkRequest::ContentLengthHeader).toLongLong(),
                              encoding, String());

    if (url.isLocalFile()) {
        client->didReceiveResponse(m_resourceHandle, response);
        return;
    }

    // The status code is equal to 0 for protocols not in the HTTP family.
    int statusCode = m_reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();

    if (url.protocolInHTTPFamily()) {
        String suggestedFilename = filenameFromHTTPContentDisposition(QString::fromAscii(m_reply->rawHeader("Content-Disposition")));

        if (!suggestedFilename.isEmpty())
            response.setSuggestedFilename(suggestedFilename);
        else
            response.setSuggestedFilename(url.lastPathComponent());

        response.setHTTPStatusCode(statusCode);
        response.setHTTPStatusText(m_reply->attribute(QNetworkRequest::HttpReasonPhraseAttribute).toByteArray().constData());

        // Add remaining headers.
        foreach (const QByteArray& headerName, m_reply->rawHeaderList()) {
            response.setHTTPHeaderField(QString::fromAscii(headerName), QString::fromAscii(m_reply->rawHeader(headerName)));
        }
    }

static inline void addAdobeAcrobatPluginDirectory(Vector<String>& directories)
{
    WebCore::String path;

    char readerPathBase[MAX_PATH];
    if(FindAcrobatInUserPath(readerPathBase))
    {
        path = FindAcrobat(readerPathBase);
        if(!path.isEmpty())
            directories.append(path);
    }

    path = FindAcrobat("/opt/Adobe");
    if(!path.isEmpty())
        directories.append(path);
}

/**
 * Return directory path where icon database is stored.
 *
 * @return newly allocated string with database path or @c NULL if
 *         none is set or database is closed. Note that return must be
 *         freed with free() as it's a strdup()ed copy of the string
 *         due reference counting.
 */
char* ewk_settings_icon_database_path_get(void)
{
    if (!WebCore::iconDatabase()->isEnabled())
        return 0;
    if (!WebCore::iconDatabase()->isOpen())
        return 0;

    WebCore::String path = WebCore::iconDatabase()->databasePath();
    if (path.isEmpty())
        return 0;
    return strdup(path.utf8().data());
}

static bool isValidProtocolString(const WebCore::String& protocol)
{
    if (protocol.isNull())
        return true;
    if (protocol.isEmpty())
        return false;
    const UChar* characters = protocol.characters();
    for (size_t i = 0; i < protocol.length(); i++) {
        if (characters[i] < 0x21 || characters[i] > 0x7E)
            return false;
    }
    return true;
}

/**
 * webkit_get_web_database_directory_path:
 *
 * Returns the current path to the directory WebKit will write Web 
 * Database databases. By default this path will be in the user data
 * directory.
 *
 * Returns: the current database directory path
 *
 * Since: 1.1.14
 **/
G_CONST_RETURN gchar* webkit_get_web_database_directory_path()
{
#if ENABLE(DATABASE)
    WebCore::String path = WebCore::DatabaseTracker::tracker().databaseDirectoryPath();

    if (path.isEmpty())
        return "";

    g_free(webkit_database_directory_path);
    webkit_database_directory_path = g_strdup(path.utf8().data());
    return webkit_database_directory_path;
#else
    return "";
#endif
}

// ----------------------------------------------------------------------------
void WebCoreResourceLoader::SetResponseHeader(JNIEnv* env, jobject obj, jint nativeResponse, jstring key, jstring val)
{
#ifdef ANDROID_INSTRUMENT
    TimeCounterAuto counter(TimeCounter::ResourceTimeCounter);
#endif
    
    WebCore::ResourceResponse* response = (WebCore::ResourceResponse*)nativeResponse;
    LOG_ASSERT(response, "nativeSetResponseHeader must take a valid response pointer!");

    LOG_ASSERT(key, "How did a null value become a key?");
    if (val) {
        WebCore::String valStr = to_string(env, val);
        if (!valStr.isEmpty())
            response->setHTTPHeaderField(to_string(env, key), valStr);
    }
}

/**
 * webkit_web_database_get_display_name:
 * @web_database: a #WebKitWebDatabase
 *
 * Returns the name of the #WebKitWebDatabase as seen by the user.
 *
 * Returns: the name of the database as seen by the user.
 *
 * Since: 1.1.14
 **/
G_CONST_RETURN gchar* webkit_web_database_get_display_name(WebKitWebDatabase* webDatabase)
{
    g_return_val_if_fail(WEBKIT_IS_WEB_DATABASE(webDatabase), NULL);

#if ENABLE(DATABASE)
    WebKitWebDatabasePrivate* priv = webDatabase->priv;
    WebCore::DatabaseDetails details = WebCore::DatabaseTracker::tracker().detailsForNameAndOrigin(priv->name, core(priv->origin));
    WebCore::String displayName =  details.displayName();

    if (displayName.isEmpty())
        return "";

    g_free(priv->displayName);
    priv->displayName = g_strdup(displayName.utf8().data());
    return priv->displayName;
#else
    return "";
#endif
}

/**
 * webkit_web_database_get_filename:
 * @web_database: a #WebKitWebDatabase
 *
 * Returns the absolute filename to the #WebKitWebDatabase file on disk.
 *
 * Returns: the absolute filename of the database
 *
 * Since: 1.1.14
 **/
G_CONST_RETURN gchar* webkit_web_database_get_filename(WebKitWebDatabase* webDatabase)
{
    g_return_val_if_fail(WEBKIT_IS_WEB_DATABASE(webDatabase), NULL);

#if ENABLE(DATABASE)
    WebKitWebDatabasePrivate* priv = webDatabase->priv;
    WebCore::String coreName = WebCore::String::fromUTF8(priv->name);
    WebCore::String corePath = WebCore::DatabaseTracker::tracker().fullPathForDatabase(core(priv->origin), coreName);

    if (corePath.isEmpty())
        return"";

    g_free(priv->filename);
    priv->filename = g_strdup(corePath.utf8().data());
    return priv->filename;

#else
    return "";
#endif
}

void WebDebugListenerImpl::sourceParsed(ExecState* execState, const SourceCode& source, int errorLine, const UString& errorMsg)
{
    if (m_listener && !m_inDebug) {
        m_inDebug = true;

        WebCore::String coreSourceURL = WebCore::ustringToString(source.provider()->url());
        WebCore::Frame *frame = static_cast<WebCore::JSDOMWindow*>(execState->lexicalGlobalObject())->impl()->frame();
        if (!(coreSourceURL.isNull() || coreSourceURL.isEmpty())) {
            WebCore::KURL sourceURL(WebCore::ParsedURLString, coreSourceURL);
            WebCore::KURL mappedURL;
            if(WebCore::FrameLoaderClientApollo::mapFrameUrl(frame, sourceURL, &mappedURL)) {
                coreSourceURL = mappedURL.string();
            }
        }

        WebCore::String coreErrorMsg = WebCore::ustringToString(errorMsg);

        WebCore::String coreSource(source.data(), source.length());

        m_listener->m_pVTable->sourceParsed(m_listener, source.provider()->asID(), coreSourceURL.webString(), coreSource.webString(), source.firstLine(), errorLine, coreErrorMsg.webString());

        m_inDebug = false;
    }
}