Examples of java.io.PushbackInputStream

java.io.PushbackInputStream
A PushbackInputStream adds functionality to another input stream, namely the ability to "push back" or "unread" one byte. This is useful in situations where it is convenient for a fragment of code to read an indefinite number of data bytes that are delimited by a particular byte value; after reading the terminating byte, the code fragment can "unread" it, so that the next read operation on the input stream will reread the byte that was pushed back. For example, bytes representing the characters constituting an identifier might be terminated by a byte representing an operator character; a method whose job is to read just an identifier can read until it sees the operator and then push the operator back to be re-read. @author David Connelly @author Jonathan Payne @version 1.43, 06/19/06 @since JDK1.0

   */
  public static InputStream utf8filte(InputStream in) {
    try {
      if (in.available() == -1)
        return in;
      PushbackInputStream pis = new PushbackInputStream(in, 3);
      byte[] header = new byte[3];
      int len = pis.read(header, 0, 3);
      if (len < 1)
        return in;
      if (header[0] != UTF_BOM[0] || header[1] != UTF_BOM[1] || header[2] != UTF_BOM[2]) {
        pis.unread(header, 0, len);
      }
      return pis;
    }
    catch (IOException e) {
      throw Lang.wrapThrow(e);

View Full Code Here

        try {


            Parameter synEnv = messageContext.getConfigurationContext().getAxisConfiguration()
                    .getParameter(SynapseConstants.SYNAPSE_ENV);


            PushbackInputStream pis = detectAndMarkMessageFault(messageContext, inputStream);


            DataHandler dataHandler;
            if (synEnv != null && synEnv.getValue() != null) {
                dataHandler = new DataHandler(new SynapseBinaryDataSource(pis, contentType,
                        (SynapseEnvironment) synEnv.getValue()));

View Full Code Here

     */
    private PushbackInputStream detectAndMarkMessageFault(final MessageContext messageContext,
            final InputStream inputStream) throws IOException {


        int bytesToRead = 4;
        PushbackInputStream pis = new PushbackInputStream(inputStream, bytesToRead);
        byte[] headerBytes = new byte[bytesToRead];
        int n = pis.read(headerBytes);


        // checking fourth byte for fault marker
        if (n == bytesToRead) {
            if (headerBytes[bytesToRead - 1] == HessianConstants.HESSIAN_V1_FAULT_IDENTIFIER
                    || headerBytes[bytesToRead - 1] == HessianConstants.HESSIAN_V2_FAULT_IDENTIFIER) {
                messageContext.setProperty(BaseConstants.FAULT_MESSAGE, SynapseConstants.TRUE);
                if (log.isDebugEnabled()) {
                    log.debug("Hessian fault detected, marking in Axis2 message context");
                }
            }
            pis.unread(headerBytes);
        } else if (n > 0) {
                byte[] bytesRead = new byte[n];
                System.arraycopy(headerBytes, 0, bytesRead, 0, n);
                pis.unread(bytesRead);
        }
        return pis;
    }

View Full Code Here

        IOUtils.readFully(inp, header);
        LongField signature = new LongField(HeaderBlockConstants._signature_offset, header);


        // Wind back those 8 bytes
        if(inp instanceof PushbackInputStream) {
            PushbackInputStream pin = (PushbackInputStream)inp;
            pin.unread(header);
        } else {
            inp.reset();
        }


        // Did it match the signature?

View Full Code Here

                if (cli > 0) {
                    in = getInputStream();
                } else if (isChunked || isEofTerminated) {
                    // ensure chunked or EOF-terminated response is non-empty
                    try {
                        @SuppressWarnings("resource")
                        PushbackInputStream pin = 
                            new PushbackInputStream(getInputStream());
                        int c = pin.read();
                        if (c != -1) {
                            pin.unread((byte)c);
                            in = pin;
                        }
                    } catch (IOException ioe) {
                        // ignore
                    }

View Full Code Here

        }
        try {
            ContentType cType = new ContentType(contentType);
            byte[] boundary = ("--" + cType.getParameter("boundary")).getBytes();
            InputStream is = new BufferedInputStream(ds.getInputStream());
            PushbackInputStream pushbackInStream = new PushbackInputStream(is,
                    (boundary.length + 2));
            readTillFirstBoundary(pushbackInStream, boundary);
            while (pushbackInStream.available()>0){
                MimeBodyPartInputStream partStream;
                partStream = new MimeBodyPartInputStream(pushbackInStream,
                        boundary);
                addBodyPart(new MimeBodyPart(partStream));
            }

View Full Code Here

    public EncodingDetectionHelper(InputStream stream) {
        useMark = stream.markSupported();
        if (useMark) {
            this.stream = stream;
        } else {
            this.stream = new PushbackInputStream(stream, 4);
        }
    }

View Full Code Here

                    // 2) Add a push back stream on top of the underlying
                    // source, and unread the surplus bytes we read. Set the
                    // push back stream to be the source of the data input obj.
                    final int surplus = read - hdrInfo.headerLength();
                    FormatIdInputStream formatIn = (FormatIdInputStream)in;
                    PushbackInputStream pushbackIn = new PushbackInputStream(
                            formatIn.getInputStream(), surplus);
                    pushbackIn.unread(header, hdrInfo.headerLength(), surplus);
                    formatIn.setInput(pushbackIn);
                } else {
                    // 3) Assume we have a store stream.
                    rewindStream(srcIn, hdrInfo.headerLength());
                }

View Full Code Here

    private final LittleEndianDataInputStream dataInputStream;


    @SuppressWarnings("IOResourceOpenedButNotSafelyClosed")
    public InputStreamSliceInput(InputStream inputStream)
    {
        pushbackInputStream = new PushbackInputStream(inputStream);
        countingInputStream = new CountingInputStream(pushbackInputStream);
        dataInputStream = new LittleEndianDataInputStream(countingInputStream);
    }

View Full Code Here


    protected abstract void readFirstLine(PushbackInputStream r)
            throws IOException;


    public boolean readFrom(InputStream s) {
        PushbackInputStream r = new PushbackInputStream(s);


        try {
            readFirstLine(r);
            readHeaders(r);
            return readBody(s);

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

Related Classes of java.io.PushbackInputStream

com.addthis.basis.io.GZIPInputStreamX

com.caucho.quercus.lib.zlib.GZInputStream

com.github.dandelion.core.asset.processor.vendor.JSMin

com.google.api.adwords.lib.utils.v201101.ReportUtilsTest

com.itextpdf.text.pdf.fonts.cmaps.CMapParser

com.lowagie.text.pdf.fonts.cmaps.CMapParser

com.sun.enterprise.security.TextLoginDialog

com.sun.msv.scanner.dtd.XmlReader

com.sun.xml.dtdparser.XmlReader

com.thoughtworks.xstream.core.util.XmlHeaderAwareReader

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.