C++ NPT_String类代码示例

/*----------------------------------------------------------------------
|   PLT_MediaRenderer::OnSetAVTransportURI
+---------------------------------------------------------------------*/
NPT_Result
PLT_MediaRenderer::OnSetAVTransportURI(PLT_ActionReference& action)
{
	/*test*/
	PLT_Service* serviceAVT;
	NPT_CHECK_WARNING(FindServiceByType("urn:schemas-upnp-org:service:AVTransport:1", serviceAVT));

	// update service state variables
	//serviceAVT->SetStateVariable("TransportState", "TRANSITIONING");
	/*test*/
    if (m_Delegate) {
        return m_Delegate->OnSetAVTransportURI(action);
    }
    
    // default implementation is using state variable
	NPT_String uri;
	NPT_CHECK_WARNING(action->GetArgumentValue("CurrentURI", uri));

    NPT_String metadata;
    NPT_CHECK_WARNING(action->GetArgumentValue("CurrentURIMetaData", metadata));
    
    //PLT_Service* serviceAVT;
    //NPT_CHECK_WARNING(FindServiceByType("urn:schemas-upnp-org:service:AVTransport:1", serviceAVT));

    // update service state variables
    serviceAVT->SetStateVariable("AVTransportURI", uri);
    serviceAVT->SetStateVariable("AVTransportURIMetaData", metadata);

	//serviceAVT->SetStateVariable("TransportState", "PLAYING");//test
	OutputDebugString(uri.GetChars());

    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   BLT_DecoderServer::OnSetPropertyCommand
+---------------------------------------------------------------------*/
void 
BLT_DecoderServer::OnSetPropertyCommand(BLT_PropertyScope        scope,
                                        const NPT_String&        /*target*/,
                                        const NPT_String&        name,
                                        const ATX_PropertyValue* value)
{
    BLT_Result result;
    ATX_LOG_FINE_1("[%s]", name.GetChars());

    ATX_Properties* properties = NULL;
    switch (scope) {
        case BLT_PROPERTY_SCOPE_CORE:
            result = BLT_Decoder_GetProperties(m_Decoder, &properties);
            break;
            
        case BLT_PROPERTY_SCOPE_STREAM:
            result = BLT_Decoder_GetStreamProperties(m_Decoder, &properties);
            break;
            
        default:
            // not handled yet
            result = BLT_ERROR_NOT_SUPPORTED;
    }
    if (ATX_SUCCEEDED(result) && properties != NULL) {
        result = ATX_Properties_SetProperty(properties, name.GetChars(), value);
    }
    SendReply(BLT_DecoderServer_Message::COMMAND_ID_SET_PROPERTY, result);
}

/*----------------------------------------------------------------------
|   PLT_HttpHelper::ParseBody
+---------------------------------------------------------------------*/
NPT_Result
PLT_HttpHelper::ParseBody(const NPT_HttpMessage& message, 
                          NPT_XmlElementNode*&   tree) 
{
    // reset tree
    tree = NULL;

    // read body
    NPT_String body;
    NPT_CHECK_WARNING(GetBody(message, body));

    // parse body
    NPT_XmlParser parser;
    NPT_XmlNode*  node;
    NPT_Result result = parser.Parse(body, node);
    if (NPT_FAILED(result)) {
        NPT_LOG_FINEST_1("Failed to parse %s", body.IsEmpty()?"(empty string)":body.GetChars());
        NPT_CHECK_WARNING(result);
    }
    
    tree = node->AsElementNode();
    if (!tree) {
        delete node;
        return NPT_FAILURE;
    }

    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|       UdpServerLoop
+---------------------------------------------------------------------*/
static void
UdpServerLoop(int port)
{
    NPT_UdpSocket listener;

    // info
    if (Options.verbose) {
        NPT_Debug("listening on port %d\n", port);
    }

    NPT_Result result = listener.Bind(NPT_SocketAddress(NPT_IpAddress::Any, port));
    if (NPT_FAILED(result)) {
        NPT_Debug("ERROR: Bind() failed (%d)\n", result);
    }

    // packet loop
    NPT_DataBuffer packet(32768);
    NPT_SocketAddress address;

    do {
        result = listener.Receive(packet, &address);
        if (NPT_SUCCEEDED(result)) {
            if (Options.verbose) {
                NPT_String ip = address.GetIpAddress().ToString();
                NPT_Debug("Received %d bytes from %s:%d\n", packet.GetDataSize(), ip.GetChars(), address.GetPort());
            }

            listener.Send(packet, &address);
        }
    } while (NPT_SUCCEEDED(result));
}

/*----------------------------------------------------------------------
|   NPT_UrlQuery::UrlDecode
+---------------------------------------------------------------------*/
NPT_String
NPT_UrlQuery::UrlDecode(const char* str)
{
    NPT_String decoded = NPT_Uri::PercentDecode(str);
    decoded.Replace('+', ' ');
    return decoded;
}

bool CUPnPPlayer::QueueNextFile(const CFileItem& file)
{
  CFileItem item(file);
  NPT_Reference<CThumbLoader> thumb_loader;
  NPT_Reference<PLT_MediaObject> obj;
  NPT_String path(file.GetPath().c_str());
  NPT_String tmp;

  if (file.IsVideoDb())
    thumb_loader = NPT_Reference<CThumbLoader>(new CVideoThumbLoader());
  else if (item.IsMusicDb())
    thumb_loader = NPT_Reference<CThumbLoader>(new CMusicThumbLoader());


  obj = BuildObject(item, path, 0, thumb_loader, NULL, CUPnP::GetServer());
  if(!obj.IsNull())
  {
    NPT_CHECK_LABEL_SEVERE(PLT_Didl::ToDidl(*obj, "", tmp), failed);
    tmp.Insert(didl_header, 0);
    tmp.Append(didl_footer);
  }

  NPT_CHECK_LABEL_WARNING(m_control->SetNextAVTransportURI(m_delegate->m_device
                                                         , m_delegate->m_instance
                                                         , file.GetPath().c_str()
                                                         , (const char*)tmp
                                                         , m_delegate), failed);
  if(!m_delegate->m_resevent.WaitMSec(10000)) goto failed;
  NPT_CHECK_LABEL_WARNING(m_delegate->m_resstatus, failed);
  return true;

failed:
  CLog::Log(LOGERROR, "UPNP: CUPnPPlayer::QueueNextFile - unable to queue file %s", file.GetPath().c_str());
  return false;
}

/*----------------------------------------------------------------------
|   NPT_String::Replace
+---------------------------------------------------------------------*/
void
NPT_String::Replace(char a, const char* str) 
{
    // check args
    if (m_Chars == NULL || a == '\0' || str == NULL || str[0] == '\0') return;

    // optimization
    if (NPT_StringLength(str) == 1) return Replace(a, str[0]);

    // we are going to create a new string
    NPT_String dst;
    char* src = m_Chars;

    // reserve at least as much as input
    dst.Reserve(GetLength());

    // process the buffer
    while (*src) {
        if (*src == a) {
            dst += str;
        } else {
            dst += *src;
        }
        src++;
    }

    Assign(dst.GetChars(), dst.GetLength());
}

/*----------------------------------------------------------------------
|   NPT_String::Format
+---------------------------------------------------------------------*/
NPT_String
NPT_String::Format(const char* format, ...)
{
    NPT_String result;
    NPT_Size   buffer_size = NPT_STRING_FORMAT_BUFFER_DEFAULT_SIZE; // default value
    
    va_list  args;
    va_start(args, format);

    for(;;) {
        /* try to format (it might not fit) */
        result.Reserve(buffer_size);
        char* buffer = result.UseChars();
        int f_result = NPT_FormatStringVN(buffer, buffer_size, format, args);
        if (f_result >= (int)(buffer_size)) f_result = -1;
        if (f_result >= 0) {
            result.SetLength(f_result);
            break;
        }
        
        /* the buffer was too small, try something bigger         */
        /* (we don't trust the return value of NPT_FormatStringVN */
        /* for the actual size needed)                            */
        buffer_size *= 2;
        if (buffer_size > NPT_STRING_FORMAT_BUFFER_MAX_SIZE) break;
    }

    va_end(args);
    
    return result;
}

/*----------------------------------------------------------------------
|   PLT_MediaServer::ParseSort
+---------------------------------------------------------------------*/
NPT_Result
PLT_MediaServer::ParseSort(const NPT_String& sort, NPT_List<NPT_String>& list)
{
    // reset output params first
    list.Clear();
    
    // easy out
    if (sort.GetLength() == 0 || sort == "*") return NPT_SUCCESS;
    
    list = sort.Split(",");
    
    // verify each property has a namespace
    NPT_List<NPT_String>::Iterator property = list.GetFirstItem();
    while (property) {
        NPT_List<NPT_String> parsed_property = (*property).Split(":");
        if (parsed_property.GetItemCount() != 2)
          parsed_property = (*property).Split("@");
        if (parsed_property.GetItemCount() != 2 || 
            (!(*property).StartsWith("-") && !(*property).StartsWith("+"))) {
            NPT_LOG_WARNING_1("Invalid SortCriteria property %s", (*property).GetChars());
            return NPT_FAILURE;
        }
        property++;
    }
    
    return NPT_SUCCESS;
}

    void Run() {
        do {
            // wait for a connection
            NPT_Socket* client = NULL;
            NPT_LOG_FINE_1("waiting for connection on port %d...", m_Port);
            NPT_Result result = m_Socket.WaitForNewClient(client, NPT_TIMEOUT_INFINITE);
            if (NPT_FAILED(result) || client == NULL) return;
                    
            NPT_SocketInfo client_info;
            client->GetInfo(client_info);
            NPT_LOG_FINE_2("client connected (%s -> %s)",
                client_info.local_address.ToString().GetChars(),
                client_info.remote_address.ToString().GetChars());

            // get the output stream
            NPT_OutputStreamReference output;
            client->GetOutputStream(output);

            // generate policy based on our current IP
            NPT_String policy = "<cross-domain-policy>";
            policy += "<allow-access-from domain=\""+client_info.local_address.GetIpAddress().ToString()+"\" to-ports=\""+m_AuthorizedPorts+"\"/>";
            policy += "<allow-access-from domain=\""+client_info.remote_address.GetIpAddress().ToString()+"\" to-ports=\""+m_AuthorizedPorts+"\"/>";
            policy += "</cross-domain-policy>";

            NPT_MemoryStream* mem_input = new NPT_MemoryStream();
            mem_input->Write(policy.GetChars(), policy.GetLength());
            NPT_InputStreamReference input(mem_input);
            
            NPT_StreamToStreamCopy(*input, *output);
            
            
            delete client;
        } while (!m_Aborted);
    }

/*----------------------------------------------------------------------
|   NPT_DirectorySplitFilePath
+---------------------------------------------------------------------*/
NPT_Result 
NPT_DirectorySplitFilePath(const char* filepath, 
                           NPT_String& path, 
                           NPT_String& filename)
{
    if (!filepath || filepath[0] == '\0') 
        return NPT_ERROR_INVALID_PARAMETERS;

    path = filepath;

    char       last_char;
    NPT_Int32  i = path.GetLength();
    do {
        last_char = path[i-1];
        if (last_char == '\\' || last_char == '/') 
            break;
    } while (--i);

    // we need at least one delimiter and it cannot be last
    if (i == 0 || i == (NPT_Int32)path.GetLength())  {
        return NPT_ERROR_INVALID_PARAMETERS;
    }

    // assign filename
    filename = filepath+i;

    // truncate path & remove trailing slashes
    NPT_CHECK(path.SetLength(i-1));

    // remove excessive delimiters
    path.TrimRight("/");
    path.TrimRight("\\");
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   PLT_MediaItem::ToDidl
+---------------------------------------------------------------------*/
NPT_Result
PLT_MediaItem::ToDidl(NPT_UInt32 mask, NPT_String& didl)
{
    NPT_String tmp;
    // Allocate enough space for a big string we're going to concatenate in
    tmp.Reserve(2048);

    tmp = "<item id=\"";

    PLT_Didl::AppendXmlEscape(tmp, m_ObjectID);
    tmp += "\" parentID=\"";
    PLT_Didl::AppendXmlEscape(tmp, m_ParentID);

    if (!m_ReferenceID.IsEmpty()) {
		tmp += "\" refID=\"";
		PLT_Didl::AppendXmlEscape(tmp, m_ReferenceID);
    }

    tmp += "\" restricted=\"";
    tmp += m_Restricted?"1\"":"0\"";

    tmp += ">";

    NPT_CHECK_SEVERE(PLT_MediaObject::ToDidl(mask, tmp));

    /* close tag */
    tmp += "</item>";

    didl += tmp;
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   NPT_UrlQuery::Parse
+---------------------------------------------------------------------*/
NPT_Result 
NPT_UrlQuery::Parse(const char* query)
{
    const char* cursor = query;
    NPT_String  name;
    NPT_String  value;
    bool        in_name = true;
    do {
        if (*cursor == '\0' || *cursor == '&') {
            if (!name.IsEmpty()) {
                AddField(name, value, true);   
            }
            name.SetLength(0);
            value.SetLength(0);
            in_name = true;
        } else if (*cursor == '=' && in_name) {
            in_name = false;
        } else {
            if (in_name) {
                name += *cursor;
            } else {
                value += *cursor;
            }
        }
    } while (*cursor++);
    
    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   NPT_LogManager::ConfigureLogger
+---------------------------------------------------------------------*/
NPT_Result
NPT_LogManager::ConfigureLogger(NPT_Logger* logger)
{
    /* configure the level */
    NPT_String* level_value = GetConfigValue(logger->m_Name,".level");
    if (level_value) {
        NPT_Int32 value;
        /* try a symbolic name */
        value = NPT_Log::GetLogLevel(*level_value);
        if (value < 0) {
            /* try a numeric value */
            if (NPT_FAILED(level_value->ToInteger(value, false))) {
                value = -1;
            }
        }
        if (value >= 0) {
            logger->m_Level = value;
            logger->m_LevelIsInherited = false;
        }
    }

    /* remove any existing handlers */
    logger->DeleteHandlers();

    /* configure the handlers */
    NPT_String* handlers = GetConfigValue(logger->m_Name,".handlers");
    if (handlers) {
        const char*     handlers_list = handlers->GetChars();
        const char*     cursor = handlers_list;
        const char*     name_start = handlers_list;
        NPT_String      handler_name;
        NPT_LogHandler* handler;
        for (;;) {
            if (*cursor == '\0' || *cursor == ',') {
                if (cursor != name_start) {
                    handler_name.Assign(name_start, (NPT_Size)(cursor-name_start));
                    handler_name.Trim(" \t");
                    
                    /* create a handler */
                    if (NPT_SUCCEEDED(
                        NPT_LogHandler::Create(logger->m_Name, handler_name, handler))) {
                        logger->AddHandler(handler);
                    }

                }
                if (*cursor == '\0') break;
                name_start = cursor+1;
            }
            ++cursor;
        }
    }

    /* configure the forwarding */
    NPT_String* forward = GetConfigValue(logger->m_Name,".forward");
    if (forward && !ConfigValueIsBooleanTrue(*forward)) {
        logger->m_ForwardToParent = false;
    }

    return NPT_SUCCESS;
}

/*----------------------------------------------------------------------
|   NPT_Uri::PercentDecode
+---------------------------------------------------------------------*/
NPT_String
NPT_Uri::PercentDecode(const char* str)
{
    NPT_String decoded;

    // check args
    if (str == NULL) return decoded;

    // reserve at least the size of the current uri
    decoded.Reserve(NPT_StringLength(str));

    // process each character
    while (unsigned char c = *str++) {
        if (c == '%') {
            // needs to be unescaped
            unsigned char unescaped;
            if (NPT_SUCCEEDED(NPT_HexToByte(str, unescaped))) {
                decoded += unescaped;
                str += 2;
            } else {
                // not a valid escape sequence, just keep the %
                decoded += c;
            }
        } else {
            // no unescaping required
            decoded += c;
        }
    }

    return decoded;
}