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.

      Parser parser = new Parser();
      parser.setScriptPath(scriptPath);
      
      Script script = parser.parse(is);


      WriteStream stream = VfsStream.openWrite(System.out);
      HashMap properties = new HashMap();
      properties.put("out", stream);
      properties.put("arguments", args);
      properties.put("File", Vfs.lookup());


      script.execute(properties, null);


      stream.flush();
    } catch (ESParseException e) {
      System.err.println(e.getMessage());
    } catch (ESException e) {
      System.err.println(e.getMessage());
      if (verbose)

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    return saveToFile(env, path, false);
  }


  private Value saveToFile(Env env, Path path, boolean isHTML)
  {
    WriteStream os = null;


    try {
      os = path.openWrite();
      saveToStream(this, os, isHTML);
    }
    catch (IOException ex) {
      env.warning(ex);
      return BooleanValue.FALSE;
    }
    finally {
      if (os != null) {
        try {
          os.close();
        }
        catch (Exception ex) {
          log.log(Level.FINE, ex.toString(), ex);
        }
      }

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  {
    TempStream tempStream = new TempStream();


    try {
      tempStream.openWrite();
      WriteStream os = new WriteStream(tempStream);


      saveToStream(node, os, isHTML);


      os.close();
    }
    catch (IOException ex) {
      tempStream.discard();
      env.warning(ex);
      return null;

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    _width = _image.getWidth();
    _height = _image.getHeight();


    TempStream ts = new TempStream();
    WriteStream os = new WriteStream(ts);
    
    try {
      ImageIO.write(_image, "jpeg", os);
    } finally {
      os.close();
    }
    
    /*
    os = Vfs.openWrite("file:/tmp/caucho/qa/test.jpg");
    try {

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    if (is.read() != 0xd8)
      return false;


      TempStream ts = new TempStream();


      WriteStream ws = new WriteStream(ts);
      ws.write(0xff);
      ws.write(0xd8);
      is.writeToStream(ws);
      ws.close();


      // XXX: issues with _jpegHead vs ts.openReadAndSaveBuffer()
      _jpegHead = ts.getHead();
      is.close();

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                                @Optional String optList)
    throws IOException
  {
    _tempStream = new TempStream();
    _tempStream.openWrite();
    _os = new WriteStream(_tempStream);


    _out = new PDFWriter(_os);
    _out.beginDocument();


    _catalogId = _out.allocateId(1);

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    os.write(_dateBuffer, 0, _dateBufferLength);
    os.flush();
    */


    // server/269n
    WriteStream os = getRawWrite();
    os.print("HTTP/1.1 100 Continue\r\n\r\n");
    os.flush();
  }

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    WebApp webApp = request.getWebApp();


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


    WriteStream os = getRawWrite();


    int statusCode = response.getStatus();
    if (statusCode == 200) {
      if (version < HttpRequest.HTTP_1_1)
        os.write(_http10ok, 0, _http10ok.length);
      else
        os.write(_http11ok, 0, _http11ok.length);
    } else {
      if (version < HttpRequest.HTTP_1_1)
        os.printLatin1("HTTP/1.0 ");
      else
        os.printLatin1("HTTP/1.1 ");


      os.write((statusCode / 100) % 10 + '0');
      os.write((statusCode / 10) % 10 + '0');
      os.write(statusCode % 10 + '0');
      os.write(' ');
      os.printLatin1(response.getStatusMessage());
    }


    if (debug) {
      log.fine(_request.dbgId() + "HTTP/1.1 " +
               statusCode + " " + response.getStatusMessage());
    }


    boolean isUpgrade = false;


    if (tcpConn != null && tcpConn.isDuplex()) {
      isUpgrade = true;


      String upgrade = getHeader("Upgrade");


      if (upgrade != null) {
        os.printLatin1("\r\nUpgrade: ");
        os.printLatin1NoLf(upgrade);
      }


      os.printLatin1("\r\nConnection: Upgrade");
      _request.killKeepalive("duplex/upgrade");


      if (debug)
        log.fine(_request.dbgId() + "Connection: Upgrade");
    }


    if (! containsHeader("Server")) {
      os.write(_resinServerBytes, 0, _resinServerBytes.length);
    }


    if (statusCode >= 400) {
      removeHeader("ETag");
      removeHeader("Last-Modified");
    }
    else if (statusCode == HttpServletResponse.SC_NOT_MODIFIED
             || statusCode == HttpServletResponse.SC_NO_CONTENT) {
      // php/1b0k


      contentType = null;
    }
    else if (response.isCacheControl()) {
      // application manages cache control
    }
    else if (response.isNoCache()) {
      // server/1b15
      removeHeader("ETag");
      removeHeader("Last-Modified");


      // even in case of 302, this may be needed for filters which
      // automatically set cache headers
      setHeaderImpl("Expires", "Thu, 01 Dec 1994 16:00:00 GMT");


      os.printLatin1("\r\nCache-Control: no-cache");


      if (debug) {
        log.fine(_request.dbgId() + "" +
                 "Cache-Control: no-cache");
      }
    }
    else if (response.isNoCacheUnlessVary()
             && ! containsHeader("Vary")) {
      os.printLatin1("\r\nCache-Control: private");


      if (debug) {
        log.fine(_request.dbgId() + "Cache-Control: private");
      }
    }
    else if (response.isPrivateCache()) {
      if (HttpRequest.HTTP_1_1 <= version) {
        // technically, this could be private="Set-Cookie,Set-Cookie2"
        // but caches don't recognize it, so there's no real extra value
        os.printLatin1("\r\nCache-Control: private");


        if (debug)
          log.fine(_request.dbgId() + "Cache-Control: private");
      }
      else {
        setHeaderImpl("Expires", "Thu, 01 Dec 1994 16:00:00 GMT");
        os.printLatin1("\r\nCache-Control: no-cache");


        if (debug) {
          log.fine(_request.dbgId() + "CacheControl: no-cache");
        }
      }
    }


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


      if (isUpgrade && "Upgrade".equalsIgnoreCase(key))
        continue;


      os.write('\r');
      os.write('\n');
      os.printLatin1NoLf(key);
      os.write(':');
      os.write(' ');
      os.printLatin1NoLf((String) _headerValues.get(i));


      if (debug) {
        log.fine(_request.dbgId() + "" +
                 key + ": " + _headerValues.get(i));
      }
    }


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


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


        CharBuffer cb = _cb;
        // XXX:
        fillCookie(cb, cookie, now, cookieVersion, false);
        os.printLatin1("\r\nSet-Cookie: ");
        os.printLatin1(cb.getBuffer(), 0, cb.getLength());
        if (cookieVersion > 0) {
          fillCookie(cb, cookie, now, cookieVersion, true);
          os.printLatin1("\r\nSet-Cookie2: ");
          os.printLatin1(cb.getBuffer(), 0, cb.getLength());
        }


        if (debug)
          log.fine(_request.dbgId() + "Set-Cookie: " + cb);
      }
    }


    if (contentType != null) {
      if (charEncoding == null) {
        if (webApp != null)
          charEncoding = webApp.getCharacterEncoding();


        // always use a character encoding to avoid XSS attacks (?)
        if (charEncoding == null)
          charEncoding = "utf-8";
      }


      os.write(_contentTypeBytes, 0, _contentTypeBytes.length);
      os.printLatin1(contentType);
      os.write(_charsetBytes, 0, _charsetBytes.length);
      os.printLatin1(charEncoding);


      if (debug) {
        log.fine(_request.dbgId() + "Content-Type: " + contentType
                 + "; charset=" + charEncoding);
      }
    }


    if (hasFooter()) {
      _contentLength = -1;
      length = -1;
    }


    boolean hasContentLength = false;
    /*
    if (isHead()) {
      // server/269t, server/0560
      hasContentLength = true;
      os.write(_contentLengthBytes, 0, _contentLengthBytes.length);
      os.print(0);
    }
    else
    */
    if (_contentLength >= 0) {
      os.write(_contentLengthBytes, 0, _contentLengthBytes.length);
      os.print(_contentLength);
      hasContentLength = true;


      if (debug)
        log.fine(_request.dbgId() + "Content-Length: " + _contentLength);
    }
    else if (statusCode == HttpServletResponse.SC_NOT_MODIFIED) {
      // #3089
      // In the HTTP spec, a 304 has no message body so the content-length
      // is not needed.  The content-length is not explicitly forbidden,
      // but does cause problems with certain clients.
      hasContentLength = true;
      setHead();
    }
    else if (statusCode == HttpServletResponse.SC_NO_CONTENT) {
      hasContentLength = true;
      os.write(_contentLengthBytes, 0, _contentLengthBytes.length);
      os.print(0);
      setHead();


      if (debug)
        log.fine(_request.dbgId() + "Content-Length: 0");
    }
    else if (length >= 0) {
      os.write(_contentLengthBytes, 0, _contentLengthBytes.length);
      os.print(length);
      hasContentLength = true;


      if (debug)
        log.fine(_request.dbgId() + "Content-Length: " + length);
    }


    if (version < HttpRequest.HTTP_1_1) {
      _request.killKeepalive("http response version: " + version);
    }
    else {
      /* XXX: the request processing already processed this header
      CharSegment conn = _request.getHeaderBuffer(_connectionCb,
                                                  _connectionCb.length);
      if (conn != null && conn.equalsIgnoreCase(_closeCb)) {
        _request.killKeepalive();
      }
      else
      */


      if (_request.isKeepalive()) {
      }
      else if (isUpgrade) {
        _request.killKeepalive("http response upgrade");
      }
      else {
        os.write(_connectionCloseBytes, 0, _connectionCloseBytes.length);


        if (debug)
          log.fine(_request.dbgId() + "Connection: close");
      }
    }


    if (HttpRequest.HTTP_1_1 <= version
        && ! hasContentLength
        && ! isHead) {
      os.printLatin1("\r\nTransfer-Encoding: chunked");
      _isChunked = true;


      if (debug)
        log.fine(_request.dbgId() + "Transfer-Encoding: chunked");
    }


    if (_lastDate / 1000 != now / 1000) {
      fillDate(now);
    }


    if (_isChunked)
      os.write(_dateBuffer, 0, _dateBufferLength - 2);
    else
      os.write(_dateBuffer, 0, _dateBufferLength);


    return _isChunked;
  }

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    dir.mkdirs();
    
    Path path = dir.createTempFile("git", "tmp");


    try {
      WriteStream os = path.openWrite();
      os.writeStream(is);
      os.close();


      init(path);


      _tempJar = path;
    } catch (IOException e) {

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              || argv[i].equals("--stdout"))) {
        Path path = Vfs.lookup(argv[i + 1]);


        RotateStream stream = RotateStream.create(path);
        stream.init();
        WriteStream out = stream.getStream();
        out.setDisableClose(true);


        EnvironmentStream.setStdout(out);


        i += 2;
      }
      else if (i + 1 < len
               && (argv[i].equals("-stderr")
                   || argv[i].equals("--stderr"))) {
        Path path = Vfs.lookup(argv[i + 1]);


        RotateStream stream = RotateStream.create(path);
        stream.init();
        WriteStream out = stream.getStream();
        out.setDisableClose(true);


        EnvironmentStream.setStderr(out);


        i += 2;
      }

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