Examples of com.caucho.vfs.ReadStream$StreamReader

com.caucho.vfs.ReadStream
A fast bufferered input stream supporting both character and byte data. The underlying stream sources are provided by StreamImpl classes, so all streams have the same API regardless of the underlying implementation.
Dynamic streams, like tcp and http will properly flush writes before reading input. And random access streams, like RandomAccessFile, can use the same API as normal streams.
Most applications will use the Path routines to create their own streams. Specialized applications, like servers, need the capability of recycling streams.

  public void flushResponse()
    throws IOException
  {
    _out.flush();
    
    ReadStream rs = _tempStream.openRead();
    PrintWriter out = _response.getWriter();
    
    int ch;


    while ((ch = rs.readChar()) >= 0)
      out.write((char) ch);


    rs.close();
  }

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    _out = null;


    if (out != null)
      out.flush();
    
    ReadStream rs = _tempStream.openRead();
    StringBuilder sb = new StringBuilder();
    
    int ch;


    while ((ch = rs.readChar()) >= 0)
      sb.append((char) ch);


    rs.close();


    return sb.toString();
  }

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            || className.equals("com/caucho/vfs/JniFileStream.class")
            || className.equals("com/caucho/vfs/JniServerSocketImpl.class"))) {
      byte []buffer = new byte[length];


      try {
        ReadStream is = null;
        try {
          is = path.openRead();


          is.readAll(buffer, 0, buffer.length);


          Class<?> cl = defineClass(name, buffer, 0, buffer.length,
                                 (CodeSource) null);


          return cl;
        } finally {
          is.close();
        }
      } catch (IOException e) {
        throw new RuntimeException(e);
      }
    }

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      os.println("<propfind xmlns=\"DAV:\"><prop>");
      os.println("<resourcetype/>");
      os.println("</prop></propfind>");
      os.flush();


      ReadStream is = new ReadStream(stream);
    
      ListHandler handler = new ListHandler(getPath());
      XmlParser parser = new XmlParser();
      parser.setContentHandler(handler);


      parser.parse(is);


      is.close();
      os.close();
      stream.close();


      ArrayList<String> names = handler.getNames();
      String []list = new String[names.size()];

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   * the implementation must initialize any variables for each connection.
   */
  public boolean handleRequest() 
    throws IOException
  {
    ReadStream in = _connection.getReadStream();
    
    SnmpParser parser = new SnmpParser(in);
    SnmpMessageValue req = parser.readMessage();
    
    checkVersion(req);

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      _socket = new Socket(host, port);
      _socket.setSoTimeout(10000);
      SocketStream s = new SocketStream(_socket);
    
      _os = new WriteStream(s);
      _is = new ReadStream(s, _os);


      String line = _is.readLine();
      
      log.fine("smtp connection to " + host + ":" + port + " succeeded");
      log.fine("smtp: " + line);

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      Constructor<?> ctor = cl.getConstructor(new Class[] { int.class, boolean.class, boolean.class });
      
      stream = (StreamImpl) ctor.newInstance(stdoutFd, true, false);
      
      _is = new ReadStream(stream);
    } catch (Exception e) {
      throw ConfigException.create(e);
    }
  }

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    @Override
    public int read(byte []buf, int offset, int length)
      throws IOException
    {
      int sublen = _pendingData;
      ReadStream is = _is;


      if (sublen <= 0)
        return -1;


      if (length < sublen)
        sublen = length;


      _os.flush();
      int readLen = is.read(buf, offset, sublen);
      _pendingData -= readLen;


      if (log.isLoggable(Level.FINEST))
        log.finest(new String(buf, offset, readLen));


      while (_pendingData == 0) {
        _os.flush();


        int code = is.read();


        switch (code) {
        case HMUX_DATA: {
          int len = (is.read() << 8) + is.read();


          if (log.isLoggable(Level.FINE))
            log.fine(_request.dbgId() + "D-r:post-data " + len);


          _pendingData = len;


          if (len > 0)
            return readLen;


          break;
        }


        case HMUX_QUIT: {
          if (log.isLoggable(Level.FINE))
            log.fine(_request.dbgId() + "Q-r:quit");


          return readLen;
        }


        case HMUX_EXIT: {
          if (log.isLoggable(Level.FINE))
            log.fine(_request.dbgId() + "X-r:exit");


          _request.killKeepalive("hmux request exit");
          return readLen;
        }


        case HMUX_YIELD: {
          _request.flushResponseBuffer();


          _os.write(HMUX_ACK);
          _os.write(0);
          _os.write(0);
          _os.flush();


          if (log.isLoggable(Level.FINE)) {
            log.fine(_request.dbgId() + "Y-r:yield");
            log.fine(_request.dbgId() + "A-w:ack");
          }
          break;
        }


        case HMUX_CHANNEL: {
          int channel = (is.read() << 8) + is.read();


          if (log.isLoggable(Level.FINE))
            log.fine(_request.dbgId() + "channel-r " + channel);
          break;
        }


        case ' ': case '\n':
          break;


        default:
          if (code < 0) {
            _request.killKeepalive("hmux request end-of-file");


            return readLen;
          }
          else {
            _request.killKeepalive("hmux unknown request: " + (char) code);


            int len = (is.read() << 8) + is.read();


            if (log.isLoggable(Level.FINE))
              log.fine(_request.dbgId() + "unknown-r '" + (char) code + "' " + len);


            is.skip(len);
          }
        }
      }


      return readLen;

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  private SelectResultSetImpl()
  {
    _ws = new WriteStream();
    _ws.setReuseBuffer(true);
    _ts = new TempStream();
    _rs = new ReadStream();
    _rs.setReuseBuffer(true);
    _buf = TempBuffer.allocate();
    _buffer = _buf.getBuffer();
    _cb = new CharBuffer();

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  public boolean next()
    throws SQLException
  {
    try {
      ReadStream rs = _rs;


      _lastColumn = 0;
      
      int hasData = rs.read();
      if (hasData <= 0)
        return false;


      int length = 0;
      int fields = _exprs.length;


      byte []buffer = _buffer;
      for (int i = 0; i < fields; i++) {
        int type = rs.read();


        int sublen = 0;


        if (type < 0)
          return false;


        ColumnType cType = ColumnType.values()[type];


        switch (cType) {
        case NONE:
          sublen = -1;
          break;


        case VARCHAR:
          int l0 = rs.read();
          int l1 = rs.read();
          int l2 = rs.read();
          int l3 = rs.read();


          sublen = ((l0 << 24) +
                    (l1 << 16) +
                    (l2 << 8) +
                    (l3));
          break;


        case INT:
          sublen = 4;
          break;
        case LONG:
        case DOUBLE:
        case DATE:
          sublen = 8;
          break;


        case BLOB:
          sublen = 128;
          break;


        default:
          throw new SQLException("Unknown column: " + type);
        }


        _types[i] = cType;
        _offsets[i] = length;
        _lengths[i] = sublen;


        if (sublen > 0) {
          rs.read(buffer, length, sublen);


          length += sublen;
        }
      }

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