Examples of com.caucho.vfs.WriteStream

com.caucho.vfs.WriteStream
A fast bufferered output 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.
OutputStream and Writers are combined. The write routines write bytes and the print routines write characters.
Most applications will use the Path routines to create their own streams. Specialized applications, like servers, need the capability of recycling streams.

  void closeImpl()
  {
    ReadStream is = _is;
    _is = null;


    WriteStream os = _os;
    _os = null;


    try {
      if (is != null)
        is.close();
    } catch (Throwable e) {
      log.log(Level.FINER, e.toString(), e);
    }


    try {
      if (os != null)
        os.close();
    } catch (Throwable e) {
      log.log(Level.FINER, e.toString(), e);
    }


    if (is != null) {

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    }


    public void writeToStream(OutputStream os)
      throws IOException
    {
      WriteStream writeStream = Vfs.openWrite(os);


      try {
        writeStream.print(_data);
      }
      finally {
        writeStream.close();
      }
    }

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  public void close()
  {
    ReadStream is = _is;
    _is = null;
    
    WriteStream os = _os;
    _os = null;


    _in.close();


    if (os != null) {
      try {
        os.close();
      } catch (IOException e) {
      }
    }


    if (is != null) {

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    HttpServletResponseImpl response = _request.getResponseFacade();


    int statusCode = response.getStatus();
    String statusMessage = response.getStatusMessage();


    WriteStream os = _req.getWriteStream();


    os.print("Status: ");
    os.print(statusCode);
    os.print(' ');
    os.print(statusMessage);
    os.print("\r\n");


    CharBuffer cb = _cb;


    if (statusCode >= 400) {
      removeHeader("ETag");
      removeHeader("Last-Modified");
    }
    else if (response.isNoCache()) {
      removeHeader("ETag");
      removeHeader("Last-Modified");


      setHeader("Expires", "Thu, 01 Dec 1994 16:00:00 GMT");


      os.print("Cache-Control: no-cache\r\n");
    }
    else if (response.isPrivateCache()) {
      os.print("Cache-Control: private\r\n");
    }


    int size = _headerKeys.size();
    for (int i = 0; i < size; i++) {
      String key = (String) _headerKeys.get(i);
      String value = (String) _headerValues.get(i);


      os.print(key);
      os.print(": ");
      os.print(value);
      os.print("\r\n");
    }


    long now = Alarm.getCurrentTime();
    ArrayList<Cookie> cookiesOut = response.getCookies();


    if (cookiesOut != null) {
      size = cookiesOut.size();
      for (int i = 0; i < size; i++) {
        Cookie cookie = cookiesOut.get(i);
        int cookieVersion = cookie.getVersion();


        fillCookie(cb, cookie, now, 0, false);


        os.print("Set-Cookie: ");
        os.print(cb);
        os.print("\r\n");


        if (cookieVersion > 0) {
          fillCookie(cb, cookie, now, cookieVersion, true);


          os.print("Set-Cookie2: ");
          os.print(cb);
          os.print("\r\n");
        }
      }
    }


    String contentType = response.getContentTypeImpl();
    String charEncoding = response.getCharacterEncodingImpl();


    if (contentType != null) {
      if (charEncoding != null) {
        os.print("Content-Type: ");
        os.print(contentType);
        os.print("; charset=");
        os.print(charEncoding);
        os.print("\r\n");
      }
      else {
        os.print("Content-Type: ");
        os.print(contentType);
        os.print("\r\n");
      }
    }


    os.print("\r\n");


    return false;
  }

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  }


  protected void writeResponse(OutputStream out, Object result)
    throws IOException, RestException
  {
    WriteStream ws = Vfs.openWrite(out);


    try {
      XMLStreamWriterImpl writer = new XMLStreamWriterImpl(ws);
      
      _marshaller.marshal(result, writer);
    } 
    catch (JAXBException e) {
      throw new RuntimeException(e);
    }
    finally {
      ws.close();
    }
  }

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  }


  public static WriteStream openWrite(Path p)
    throws IOException
  {
    WriteStream s = p.openWrite();
    Exit.addExit(exitOutputStream, s);
    return s;
  }

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  }


  public static WriteStream openAppend(Path p)
    throws IOException
  {
    WriteStream s = p.openAppend();
    Exit.addExit(exitOutputStream, s);
    return s;
  }

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  }


  public static void write(Path path, Call call, int length)
    throws Throwable
  {
    WriteStream s = path.openWrite();


    try {
      for (int i = 0; i < length; i++) {
        String string = call.getArgString(i, length);


        s.print(string);
      }
    } finally {
      s.close();
    }
  }

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  }


  public static void writeln(Path path, Call call, int length)
  throws Throwable
  {
    WriteStream s = path.openWrite();


    try {
      for (int i = 0; i < length; i++) {
        String string = call.getArgString(i, length);


        s.print(string);
      }


      s.print('\n');
    } finally {
      s.close();
    }
  }

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  }


  public static void writeStream(Path path, InputStream is)
  throws Throwable
  {
    WriteStream s = path.openWrite();


    try {
      s.writeStream(is);
    } finally {
      s.close();
    }
  }

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