Example usage for java.io PushbackInputStream unread

Introduction

In this page you can find the example usage for java.io PushbackInputStream unread.

Prototype

public void unread(byte[] b) throws IOException 

Source Link

Document

Pushes back an array of bytes by copying it to the front of the pushback buffer.

Usage

From source file:it.unifi.rcl.chess.traceanalysis.Trace.java

/**
 * Checks if the input stream is compressed, and in case it returns a GZIPInputStream
 * @param stream/*w  w w.j  a va2s . c  om*/
 * @return
 * @throws IOException
 */
private static boolean checkGZIP(InputStream stream) throws IOException {
    PushbackInputStream pb = new PushbackInputStream(stream, 2); //we need a pushbackstream to look ahead
    byte[] signature = new byte[2];
    pb.read(signature); //read the signature
    pb.unread(signature); //push back the signature to the stream
    if (signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b) //check if matches standard gzip magic number
        return true;
    else
        return false;
}

---

From source file:com.digitalpebble.storm.crawler.protocol.http.HttpResponse.java

private static int peek(PushbackInputStream in) throws IOException {
    int value = in.read();
    in.unread(value);
    return value;
}

---

From source file:Main.java

public static final int ReadInt(PushbackInputStream in, int def) {
    int b;//from  w w w  .ja  va 2s. c  o m
    boolean neg = false;
    int i = 0, digits = 0;
    try {
        while (true) {
            b = (int) in.read() & 0xff;
            if (b == '-' && digits == 0)
                neg = !neg;
            else if (Character.isDigit(b)) {
                i = 10 * i + (b - (int) '0');
                ++digits;
            } else if (digits != 0 || !Character.isSpace((char) b)) {
                if (b != -1)
                    in.unread(b);
                break;
            }
        }
    } catch (IOException e) {
    }
    try {
        while ((b = in.read()) != '/' && b != -1)
            ;
    } catch (IOException e) {
    }
    if (neg)
        i = -i;
    return digits > 0 ? i : def;
}

---

From source file:grails.converters.JSON.java

/**
 * Parses the given request's InputStream and returns ether a JSONObject or a JSONArry
 *
 * @param request the JSON Request/*from ww  w.j  ava2s . c  o  m*/
 * @return ether a JSONObject or a JSONArray - depending on the given JSON
 * @throws ConverterException when the JSON content is not valid
 */
public static Object parse(HttpServletRequest request) throws ConverterException {
    Object json = request.getAttribute(CACHED_JSON);
    if (json != null) {
        return json;
    }

    String encoding = request.getCharacterEncoding();
    if (encoding == null) {
        encoding = Converter.DEFAULT_REQUEST_ENCODING;
    }
    try {
        PushbackInputStream pushbackInputStream = null;
        int firstByte = -1;
        try {
            pushbackInputStream = new PushbackInputStream(request.getInputStream());
            firstByte = pushbackInputStream.read();
        } catch (IOException ioe) {
        }

        if (firstByte == -1) {
            return new JSONObject();
        }

        pushbackInputStream.unread(firstByte);
        json = parse(pushbackInputStream, encoding);
        request.setAttribute(CACHED_JSON, json);
        return json;
    } catch (IOException e) {
        throw new ConverterException("Error parsing JSON", e);
    }
}

---

From source file:com.hs.mail.mailet.ToRepository.java

private void deliver(Collection<Recipient> recipients, SmtpMessage message) throws IOException {
    String returnPath = (message.getNode() != SmtpMessage.LOCAL)
            ? "Return-Path: <" + message.getFrom().getMailbox() + ">\r\n"
            : null;/*from  ww  w .  j ava  2  s .  c  om*/
    MailMessage msg = message.getMailMessage();
    try {
        if (returnPath != null) {
            Header header = msg.getHeader().getHeader();
            header.setField(AbstractField.parse(returnPath));
            msg.setSize(msg.getSize() + returnPath.getBytes().length);
        }
        for (Recipient rcpt : recipients) {
            try {
                if (rcpt.getID() != -1) {
                    if (!Sieve.runSieve(context, rcpt, message)) {
                        context.storeMail(rcpt.getID(), ImapConstants.INBOX_NAME, message);
                    }
                }
            } catch (Exception e) {
                StringBuilder errorBuffer = new StringBuilder(256).append("Error while delivering message to ")
                        .append(rcpt);
                logger.error(errorBuffer.toString(), e);

                if (!message.isNotificationMessage()) {
                    errorBuffer.append(": ").append(e.getMessage().trim()).append("\r\n");
                    message.appendErrorMessage(errorBuffer.toString());
                }
            }
        }
    } catch (MimeException e) {
        // impossible really
    }
    if (msg != null && msg.getPhysMessageID() != 0) {
        try {
            if (returnPath != null) {
                PushbackInputStream is = new PushbackInputStream(msg.getInputStream(), returnPath.length());
                is.unread(returnPath.getBytes("ASCII"));
                msg.save(is);
            } else {
                msg.save(true);
            }
            builder.build(msg.getInternalDate(), msg.getPhysMessageID());
        } catch (IOException e) {
            logger.error(e.getMessage(), e);
        } catch (MimeException e) {
            logger.error(e.getMessage(), e);
        }
    }
}

---

From source file:eu.scape_project.up2ti.container.ArcContainer.java

@Override
public void init(String containerFileName, InputStream containerFileStream) throws IOException {
    this.containerFileName = containerFileName;
    // Read first two bytes to check if we have a gzipped input stream
    PushbackInputStream pb = new PushbackInputStream(containerFileStream, 2);
    byte[] signature = new byte[2];
    pb.read(signature);//ww  w . j ava 2  s . c o m
    pb.unread(signature);
    // use compressed reader if gzip magic number is matched
    if (signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b) {
        reader = ArcReaderFactory.getReaderCompressed(pb);
    } else {
        reader = ArcReaderFactory.getReaderUncompressed(pb);
    }
    archiveRecords = new ArrayList<ArcRecordBase>();
    // initialise object by create temporary files and the bidirectional 
    // file-record map.
    arcRecContentsToTempFiles();
}

---

From source file:com.trsst.server.AbstractMultipartAdapter.java

private MultipartInputStream getMultipartStream(RequestContext request, InputStream inputStream)
        throws IOException, ParseException, IllegalArgumentException {
    String boundary = request.getContentType().getParameter(BOUNDARY_PARAM);

    if (boundary == null) {
        throw new IllegalArgumentException("multipart/related stream invalid, boundary parameter is missing.");
    }//  w  w  w . j av a  2s.c o  m

    boundary = "--" + boundary;

    String type = request.getContentType().getParameter(TYPE_PARAM);
    if (!(type != null && MimeTypeHelper.isAtom(type))) {
        throw new ParseException(
                "multipart/related stream invalid, type parameter should be " + Constants.ATOM_MEDIA_TYPE);
    }

    PushbackInputStream pushBackInput = new PushbackInputStream(inputStream, 2);
    pushBackInput.unread("\r\n".getBytes());

    return new MultipartInputStream(pushBackInput, boundary.getBytes());
}

---

From source file:eu.scape_project.tpid.ContainerProcessing.java

/**
 * Prepare input/*from  w  ww.  j a v a  2 s  .  c  om*/
 *
 * @param pt
 * @throws IOException IO Error
 * @throws java.lang.InterruptedException
 */
public void prepareInput(Path pt) throws InterruptedException, IOException {
    FileSystem fs = FileSystem.get(context.getConfiguration());
    InputStream containerFileStream = fs.open(pt);
    String containerFileName = pt.getName();

    ArcReader reader;
    // Read first two bytes to check if we have a gzipped input stream
    PushbackInputStream pb = new PushbackInputStream(containerFileStream, 2);
    byte[] signature = new byte[2];
    pb.read(signature);
    pb.unread(signature);
    // use compressed reader if gzip magic number is matched
    if (signature[0] == (byte) 0x1f && signature[1] == (byte) 0x8b) {
        reader = ArcReaderFactory.getReaderCompressed(pb);
    } else {
        reader = ArcReaderFactory.getReaderUncompressed(pb);
    }
    long currTM = System.currentTimeMillis();
    String unpackHdfsPath = conf.get("unpack_hdfs_path", "tpid_unpacked");
    String hdfsUnpackDirStr = StringUtils.normdir(unpackHdfsPath, Long.toString(currTM));
    String hdfsJoboutputPath = conf.get("tooloutput_hdfs_path", "tpid_tooloutput");
    String hdfsOutputDirStr = StringUtils.normdir(hdfsJoboutputPath, Long.toString(currTM));

    Iterator<ArcRecordBase> arcIterator = reader.iterator();

    // Number of files which should be processed per invokation
    int numItemsPerInvocation = conf.getInt("num_items_per_task", 50);
    int numItemCounter = numItemsPerInvocation;
    // List of input files to be processed
    String inliststr = "";
    // List of output files to be generated
    String outliststr = "";
    try {
        while (arcIterator.hasNext()) {
            ArcRecordBase arcRecord = arcIterator.next();
            String recordKey = getRecordKey(arcRecord, containerFileName);
            String outFileName = RandomStringUtils.randomAlphabetic(25);
            String hdfsPathStr = hdfsUnpackDirStr + outFileName;
            Path hdfsPath = new Path(hdfsPathStr);
            String outputFileSuffix = conf.get("output_file_suffix", ".fits.xml");
            String hdfsOutPathStr = hdfsOutputDirStr + outFileName + outputFileSuffix;
            FSDataOutputStream hdfsOutStream = fs.create(hdfsPath);
            ArcUtils.recordToOutputStream(arcRecord, hdfsOutStream);
            Text key = new Text(recordKey);
            Text value = new Text(fs.getHomeDirectory() + File.separator + hdfsOutPathStr);
            mos.write("keyfilmapping", key, value);
            String scapePlatformInvoke = conf.get("scape_platform_invoke", "fits dirxml");
            Text ptmrkey = new Text(scapePlatformInvoke);
            // for the configured number of items per invokation, add the 
            // files to the input and output list of the command.
            inliststr += "," + fs.getHomeDirectory() + File.separator + hdfsPathStr;
            outliststr += "," + fs.getHomeDirectory() + File.separator + hdfsOutPathStr;
            if (numItemCounter > 1 && arcIterator.hasNext()) {
                numItemCounter--;
            } else if (numItemCounter == 1 || !arcIterator.hasNext()) {
                inliststr = inliststr.substring(1); // cut off leading comma 
                outliststr = outliststr.substring(1); // cut off leading comma 
                String pattern = conf.get("tomar_param_pattern", "%1$s %2$s");
                String ptMrStr = StringUtils.formatCommandOutput(pattern, inliststr, outliststr);
                Text ptmrvalue = new Text(ptMrStr);
                // emit tomar input line where the key is the tool invokation
                // (tool + operation) and the value is the parameter list
                // where input and output strings contain file lists.
                mos.write("tomarinput", ptmrkey, ptmrvalue);
                numItemCounter = numItemsPerInvocation;
                inliststr = "";
                outliststr = "";
            }
        }
    } catch (Exception ex) {
        mos.write("error", new Text("Error"), new Text(pt.toString()));
    }

}

---

From source file:edu.mayo.trilliumbridge.webapp.TransformerController.java

/**
 * From http://stackoverflow.com/a/19137900/656853
 *//*  w  ww  . ja  v  a  2 s.  c  o  m*/
private InputStream checkStreamIsNotEmpty(InputStream inputStream) throws IOException {
    if (inputStream == null) {
        throw new UserInputException(NO_CONTENT_ERROR_MSG);
    }

    PushbackInputStream pushbackInputStream = new PushbackInputStream(inputStream);
    int b;
    b = pushbackInputStream.read();
    if (b == -1) {
        throw new UserInputException("No file or XML content body sent.");
    }
    pushbackInputStream.unread(b);

    return pushbackInputStream;
}

---

From source file:eu.europeana.uim.sugarcrmclient.internal.ExtendedSaajSoapMessageFactory.java

/**
 * Checks for the UTF-8 Byte Order Mark, and removes it if present. The SAAJ RI cannot cope with these BOMs.
 *
 * @see <a href="http://jira.springframework.org/browse/SWS-393">SWS-393</a>
 * @see <a href="http://unicode.org/faq/utf_bom.html#22">UTF-8 BOMs</a>
 *///from   w ww.j  av a  2s. co m
private InputStream checkForUtf8ByteOrderMark(InputStream inputStream) throws IOException {
    PushbackInputStream pushbackInputStream = new PushbackInputStream(new BufferedInputStream(inputStream), 3);
    byte[] bom = new byte[3];
    if (pushbackInputStream.read(bom) != -1) {
        // check for the UTF-8 BOM, and remove it if there. See SWS-393
        if (!(bom[0] == (byte) 0xEF && bom[1] == (byte) 0xBB && bom[2] == (byte) 0xBF)) {
            pushbackInputStream.unread(bom);
        }
    }
    return pushbackInputStream;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• »