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:org.gaul.s3proxy.S3ProxyHandler.java

private static void handleSetContainerAcl(HttpServletRequest request, HttpServletResponse response,
        InputStream is, BlobStore blobStore, String containerName) throws IOException, S3Exception {
    ContainerAccess access;/*from w  w  w  . j  av  a  2 s  .  co  m*/

    String cannedAcl = request.getHeader("x-amz-acl");
    if (cannedAcl == null || "private".equalsIgnoreCase(cannedAcl)) {
        access = ContainerAccess.PRIVATE;
    } else if ("public-read".equalsIgnoreCase(cannedAcl)) {
        access = ContainerAccess.PUBLIC_READ;
    } else if (CANNED_ACLS.contains(cannedAcl)) {
        throw new S3Exception(S3ErrorCode.NOT_IMPLEMENTED);
    } else {
        response.sendError(HttpServletResponse.SC_BAD_REQUEST);
        return;
    }

    PushbackInputStream pis = new PushbackInputStream(is);
    int ch = pis.read();
    if (ch != -1) {
        pis.unread(ch);
        AccessControlPolicy policy = new XmlMapper().readValue(pis, AccessControlPolicy.class);
        String accessString = mapXmlAclsToCannedPolicy(policy);
        if (accessString.equals("private")) {
            access = ContainerAccess.PRIVATE;
        } else if (accessString.equals("public-read")) {
            access = ContainerAccess.PUBLIC_READ;
        } else {
            throw new S3Exception(S3ErrorCode.NOT_IMPLEMENTED);
        }
    }

    blobStore.setContainerAccess(containerName, access);
}

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From source file:org.gaul.s3proxy.S3ProxyHandler.java

private static void handleSetBlobAcl(HttpServletRequest request, HttpServletResponse response, InputStream is,
        BlobStore blobStore, String containerName, String blobName) throws IOException, S3Exception {
    BlobAccess access;//w w w.  j  a  va 2 s . c o m

    String cannedAcl = request.getHeader("x-amz-acl");
    if (cannedAcl == null || "private".equalsIgnoreCase(cannedAcl)) {
        access = BlobAccess.PRIVATE;
    } else if ("public-read".equalsIgnoreCase(cannedAcl)) {
        access = BlobAccess.PUBLIC_READ;
    } else if (CANNED_ACLS.contains(cannedAcl)) {
        throw new S3Exception(S3ErrorCode.NOT_IMPLEMENTED);
    } else {
        response.sendError(HttpServletResponse.SC_BAD_REQUEST);
        return;
    }

    PushbackInputStream pis = new PushbackInputStream(is);
    int ch = pis.read();
    if (ch != -1) {
        pis.unread(ch);
        AccessControlPolicy policy = new XmlMapper().readValue(pis, AccessControlPolicy.class);
        String accessString = mapXmlAclsToCannedPolicy(policy);
        if (accessString.equals("private")) {
            access = BlobAccess.PRIVATE;
        } else if (accessString.equals("public-read")) {
            access = BlobAccess.PUBLIC_READ;
        } else {
            throw new S3Exception(S3ErrorCode.NOT_IMPLEMENTED);
        }
    }

    blobStore.setBlobAccess(containerName, blobName, access);
}

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From source file:org.mule.transport.stdio.StdioMessageReceiver.java

@Override
public void poll() {
    String encoding = endpoint.getEncoding();
    try {//from w w w  .j av  a  2s.  co  m
        if (sendStream) {
            PushbackInputStream in = new PushbackInputStream(inputStream);

            //Block until we have some data
            int i = in.read();
            //Roll back our read
            in.unread(i);
            MuleMessage message = createMuleMessage(in, encoding);
            routeMessage(message);
        } else {
            byte[] inputBuffer = new byte[bufferSize];
            int len = inputStream.read(inputBuffer);

            if (len == -1) {
                return;
            }

            StringBuffer fullBuffer = new StringBuffer(bufferSize);
            while (len > 0) {
                fullBuffer.append(new String(inputBuffer, 0, len));
                len = 0; // mark as read
                if (inputStream.available() > 0) {
                    len = inputStream.read(inputBuffer);
                }
            }

            // Each line is a separate message
            String[] lines = fullBuffer.toString().split(SystemUtils.LINE_SEPARATOR);
            for (int i = 0; i < lines.length; ++i) {
                MuleMessage message = createMuleMessage(lines[i], encoding);
                routeMessage(message);
            }
        }

        doConnect();
    } catch (Exception e) {
        getConnector().getMuleContext().getExceptionListener().handleException(e);
    }
}

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From source file:org.openhealthtools.openatna.syslog.bsd.BsdMessageFactory.java

public SyslogMessage read(InputStream in) throws SyslogException {
    try {//  w w w  . j  ava2s .  co m
        PushbackInputStream pin = new PushbackInputStream(in, 5);
        int priority = readPriority(pin);
        int facility;
        int severity;
        byte c;
        int spaces = 4;
        int count = 0;
        boolean spaceBefore = false;
        ByteBuffer buff = ByteBuffer.wrap(new byte[256]);

        String timestamp;
        String month = null;
        String date = null;
        String time = null;
        String host = "";
        int max = 256;
        int curr = 0;

        while (count < spaces && curr < max) {
            c = (byte) pin.read();
            curr++;
            if (c == ' ') {
                if (!spaceBefore) {
                    count++;
                    String currHeader = new String(buff.array(), 0, buff.position(), Constants.ENC_UTF8);
                    buff.clear();
                    switch (count) {
                    case 1:
                        month = currHeader;
                        break;
                    case 2:
                        date = currHeader;
                        break;
                    case 3:
                        time = currHeader;
                        break;
                    case 4:
                        host = currHeader;
                        break;

                    }
                }
                spaceBefore = true;

            } else {
                spaceBefore = false;
                buff.put(c);
            }
        }
        if (month == null || date == null || time == null) {
            timestamp = createDate(new Date());
        } else {
            String gap = " ";
            if (date.length() == 1) {
                gap = "  ";
            }
            timestamp = (month + gap + date + " " + time);
            try {
                formatDate(timestamp);
            } catch (Exception e) {
                timestamp = createDate(new Date());
            }
        }
        String tag = null;
        int tagLen = 32;
        buff.clear();
        for (int i = 0; i < tagLen; i++) {
            c = (byte) pin.read();
            curr++;
            if (!Character.isLetterOrDigit((char) (c & 0xff))) {
                pin.unread(c);
                break;
            }
            buff.put(c);
        }
        if (buff.position() > 0) {
            tag = new String(buff.array(), 0, buff.position(), Constants.ENC_UTF8);
        }

        LogMessage logMessage = getLogMessage(tag);
        String encoding = readBom(pin, logMessage.getExpectedEncoding());
        logMessage.read(pin, encoding);
        facility = priority / 8;
        severity = priority % 8;
        return new BsdMessage(facility, severity, timestamp, host, logMessage, tag);
    } catch (IOException e) {
        e.printStackTrace();
        throw new SyslogException(e);
    }
}

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From source file:org.openhealthtools.openatna.syslog.GenericMessageFactory.java

public SyslogMessage read(InputStream in) throws SyslogException {
    try {/*w  w  w.j a v  a  2  s.  c om*/
        PushbackInputStream pin = new PushbackInputStream(in, 7);
        byte[] bytes = new byte[7];
        pin.read(bytes);

        boolean bsd = isBSD(bytes);
        pin.unread(bytes);
        if (bsd) {
            log.debug("message is BSD style");
            return bsdFactory.read(pin);
        } else {
            log.debug("message RFC 5424");
            return protFactory.read(pin);
        }
    } catch (IOException e) {
        throw new SyslogException(e);
    }
}

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From source file:org.openhealthtools.openatna.syslog.protocol.ProtocolMessageFactory.java

/**
 * This reads up to 256 characters to read headers (excluding SDs). This limit is arbitrary.
 * It is imposed to reduce the risk/*from   w w  w.  j  a  va 2 s.  co  m*/
 * of badly formed or malicious messages from using too many resources.
 *
 * @param in
 * @return
 * @throws SyslogException
 */
public SyslogMessage read(InputStream in) throws SyslogException {
    try {
        PushbackInputStream pin = new PushbackInputStream(in, 5);
        int priority = readPriority(pin);
        int facility;
        int severity;
        byte c;
        int spaces = 5;
        int count = 0;
        ByteBuffer buff = ByteBuffer.wrap(new byte[256]);

        String timestamp = null;
        String host = "-";
        String app = "-";
        String proc = "-";
        String mid = "-";
        int max = 256;
        int curr = 0;

        while (count < spaces && curr < max) {
            c = (byte) pin.read();
            curr++;
            if (c == ' ') {
                count++;
                String currHeader = new String(buff.array(), 0, buff.position(), Constants.ENC_UTF8);
                buff.clear();
                switch (count) {
                case 1:
                    timestamp = currHeader;
                    break;
                case 2:
                    host = currHeader;
                    break;
                case 3:
                    app = currHeader;
                    break;
                case 4:
                    proc = currHeader;
                    break;
                case 5:
                    mid = currHeader;
                    break;
                }
            } else {
                buff.put(c);
            }
        }
        if (timestamp == null) {
            throw new SyslogException("no timestamp defined");
        }

        c = (byte) pin.read();
        List<StructuredElement> els = new ArrayList<StructuredElement>();
        if (c == '-') {
            c = (byte) pin.read();
            if (c != ' ') {
                throw new SyslogException("not a space");
            }
        } else if (c == '[') {
            pin.unread(c);
            els = StructuredElement.parse(pin);
        } else {
            throw new SyslogException("Illegal Structured data");
        }
        LogMessage logMessage = getLogMessage(mid);
        String encoding = readBom(pin, logMessage.getExpectedEncoding());
        logMessage.read(pin, encoding);
        facility = priority / 8;
        severity = priority % 8;
        ProtocolMessage sm = new ProtocolMessage(facility, severity, timestamp, host, logMessage, app, mid,
                proc);
        for (StructuredElement el : els) {
            sm.addStructuredElement(el);
        }
        return sm;
    } catch (IOException e) {
        e.printStackTrace();
        throw new SyslogException(e);
    }
}

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From source file:org.openymsg.network.HTTPConnectionHandler.java

private String readLine(PushbackInputStream pbis) throws IOException {
    int c = pbis.read();
    StringBuffer sb = new StringBuffer();
    while (c != '\n' && c != '\r') {
        sb.append((char) c);
        c = pbis.read();/*from w w w. j  ava2  s  . c o m*/
    }
    // Check next character
    int c2 = pbis.read();
    if ((c == '\n' && c2 != '\r') || (c == '\r' && c2 != '\n'))
        pbis.unread(c2);
    return sb.toString();
}

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From source file:org.osaf.cosmo.cmp.CmpServlet.java

private Document readXmlRequest(HttpServletRequest req) throws SAXException, IOException {
    if (req.getContentLength() == 0) {
        return null;
    }//from w w  w.  ja va2  s  .c  o  m
    InputStream in = req.getInputStream();
    if (in == null) {
        return null;
    }

    // check to see if there's any data to read
    PushbackInputStream filtered = new PushbackInputStream(in, 1);
    int read = filtered.read();
    if (read == -1) {
        return null;
    }
    filtered.unread(read);

    // there is data, so read the stream
    try {
        BUILDER_FACTORY.setNamespaceAware(true);
        DocumentBuilder docBuilder = BUILDER_FACTORY.newDocumentBuilder();
        return docBuilder.parse(filtered);
    } catch (ParserConfigurationException e) {
        throw new CmpException("error configuring xml builder", e);
    }
}

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