Example usage for java.nio CharBuffer flip

List of usage examples for java.nio CharBuffer flip

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Introduction

In this page you can find the example usage for java.nio CharBuffer flip.

Prototype

public final Buffer flip()

Source Link

Document

Flips this buffer.

Usage

From source file:org.paxle.core.doc.impl.AParserDocumentTest.java

protected void appendData(File source, IParserDocument target) throws IOException {
    final StringBuilder sourceText = new StringBuilder();

    // writing Data
    final CharBuffer buffer = CharBuffer.allocate(50);
    final InputStreamReader sourceReader = new InputStreamReader(new FileInputStream(source),
            Charset.forName("UTF-8"));
    while (sourceReader.read(buffer) != -1) {
        buffer.flip();
        sourceText.append(buffer);/*from w  ww.  j ava 2s .c o m*/
        target.append(buffer.toString());
        buffer.clear();
    }

    sourceReader.close();
    target.flush();
}

From source file:uk.ac.ebi.arrayexpress.servlets.HttpProxyServlet.java

@Override
protected void doRequest(HttpServletRequest request, HttpServletResponse response, RequestType requestType)
        throws ServletException, IOException {
    RegexHelper MATCH_URL_REGEX = new RegexHelper("/+(.+)", "i");
    RegexHelper TEST_HOST_IN_URL_REGEX = new RegexHelper("^http\\:/{2}([^/]+)/", "i");
    RegexHelper SQUARE_BRACKETS_REGEX = new RegexHelper("\\[\\]", "g");

    logRequest(logger, request, requestType);

    String url = MATCH_URL_REGEX.matchFirst(request.getPathInfo());
    url = url.replaceFirst("http:/{1,2}", "http://"); // stupid hack as tomcat 6.0 removes second forward slash
    String queryString = request.getQueryString();

    if (0 < url.length()) {
        if (!TEST_HOST_IN_URL_REGEX.test(url)) { // no host here, will self
            url = "http://localhost:" + String.valueOf(request.getLocalPort()) + "/" + url;
        }/*  w  w w. j ava  2 s  . c om*/
        logger.debug("Will access [{}]", url);

        GetMethod getMethod = new GetMethod(url);

        if (null != queryString) {
            queryString = SQUARE_BRACKETS_REGEX.replace(queryString, "%5B%5D");
            getMethod.setQueryString(queryString);
        }

        Enumeration requestHeaders = request.getHeaderNames();
        while (requestHeaders.hasMoreElements()) {
            String name = (String) requestHeaders.nextElement();
            String value = request.getHeader(name);
            if (null != value) {
                getMethod.setRequestHeader(name, value);
            }
        }

        try {
            httpClient.executeMethod(getMethod);

            int statusCode = getMethod.getStatusCode();
            long contentLength = getMethod.getResponseContentLength();
            logger.debug("Got response [{}], length [{}]", statusCode, contentLength);

            Header[] responseHeaders = getMethod.getResponseHeaders();
            for (Header responseHeader : responseHeaders) {
                String name = responseHeader.getName();
                String value = responseHeader.getValue();
                if (null != name && null != value && !(name.equals("Server") || name.equals("Date")
                        || name.equals("Transfer-Encoding"))) {
                    response.setHeader(responseHeader.getName(), responseHeader.getValue());
                }
            }

            if (200 != statusCode) {
                response.setStatus(statusCode);
            }

            InputStream inStream = getMethod.getResponseBodyAsStream();
            if (null != inStream) {
                BufferedReader in = new BufferedReader(new InputStreamReader(inStream));

                BufferedWriter out = new BufferedWriter(new OutputStreamWriter(response.getOutputStream()));

                CharBuffer buffer = CharBuffer.allocate(PROXY_BUFFER_SIZE);
                while (in.read(buffer) >= 0) {
                    buffer.flip();
                    out.append(buffer);
                    buffer.clear();
                }

                in.close();
                out.close();
            }
        } catch (Exception x) {
            if (x.getClass().getName().equals("org.apache.catalina.connector.ClientAbortException")) {
                logger.warn("Client aborted connection");
            } else {
                logger.error("Caught an exception:", x);
                response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, x.getMessage());
            }
        } finally {
            getMethod.releaseConnection();
        }
    }
}