Example usage for java.io InputStream reset

Introduction

In this page you can find the example usage for java.io InputStream reset.

Prototype

public synchronized void reset() throws IOException 

Source Link

Document

Repositions this stream to the position at the time the mark method was last called on this input stream.

Usage

From source file:org.apache.sling.distribution.packaging.impl.DistributionPackageUtils.java

public static void readInfo(InputStream inputStream, Map<String, Object> info) {

    try {/*from ww  w .  j a  v  a2s  .  co  m*/
        int size = META_START.getBytes("UTF-8").length;
        inputStream.mark(size);
        byte[] buffer = new byte[size];
        int bytesRead = inputStream.read(buffer, 0, size);
        String s = new String(buffer, "UTF-8");

        if (bytesRead > 0 && buffer[0] > 0 && META_START.equals(s)) {
            ObjectInputStream stream = getSafeObjectInputStream(inputStream);

            HashMap<String, Object> map = (HashMap<String, Object>) stream.readObject();
            info.putAll(map);
        } else {
            inputStream.reset();
        }
    } catch (IOException e) {
        log.error("Cannot read stream info", e);
    } catch (ClassNotFoundException e) {
        log.error("Cannot read stream info", e);
    }

}

---

From source file:org.apache.tika.parser.pkg.TikaCompressorStreamFactory.java

/**
 * Try to detect the type of compressor stream.
 *
 * @param in input stream/*from  www. j a v a  2s  . c om*/
 * @return type of compressor stream detected
 * @throws CompressorException if no compressor stream type was detected
 *                             or if something else went wrong
 * @throws IllegalArgumentException if stream is null or does not support mark
 *
 * @since 1.14
 */
public static String detect(final InputStream in) throws CompressorException {
    if (in == null) {
        throw new IllegalArgumentException("Stream must not be null.");
    }

    if (!in.markSupported()) {
        throw new IllegalArgumentException("Mark is not supported.");
    }

    final byte[] signature = new byte[12];
    in.mark(signature.length);
    int signatureLength = -1;
    try {
        signatureLength = IOUtils.readFully(in, signature);
        in.reset();
    } catch (IOException e) {
        throw new CompressorException("IOException while reading signature.", e);
    }

    if (BZip2CompressorInputStream.matches(signature, signatureLength)) {
        return BZIP2;
    }

    if (GzipCompressorInputStream.matches(signature, signatureLength)) {
        return GZIP;
    }

    if (Pack200CompressorInputStream.matches(signature, signatureLength)) {
        return PACK200;
    }

    if (FramedSnappyCompressorInputStream.matches(signature, signatureLength)) {
        return SNAPPY_FRAMED;
    }

    if (ZCompressorInputStream.matches(signature, signatureLength)) {
        return Z;
    }

    if (DeflateCompressorInputStream.matches(signature, signatureLength)) {
        return DEFLATE;
    }

    if (XZUtils.matches(signature, signatureLength)) {
        return XZ;
    }

    if (LZMAUtils.matches(signature, signatureLength)) {
        return LZMA;
    }

    /*            if (FramedLZ4CompressorInputStream.matches(signature, signatureLength)) {
        return LZ4_FRAMED;
    }*/

    throw new CompressorException("No Compressor found for the stream signature.");
}

---

From source file:com.zimbra.common.util.ByteUtil.java

/**
 * Determines if the data in the given stream is gzipped.
 * Requires that the <tt>InputStream</tt> supports mark/reset.
 *///  w w w.  j  a v a  2s.co m
public static boolean isGzipped(InputStream in) throws IOException {
    in.mark(2);
    int header = in.read() | (in.read() << 8);
    in.reset();
    if (header == GZIPInputStream.GZIP_MAGIC) {
        return true;
    }
    return false;
}

---

From source file:org.apache.synapse.commons.json.JsonUtil.java

/**
 * Returns a reusable cached copy of the JSON stream contained in the provided Message Context.
 *
 * @param messageContext Axis2 Message context that contains a JSON payload.
 * @return {@link java.io.InputStream}//  w  w  w  .  ja  v  a  2 s  . c  om
 */
private static InputStream cachedCopyOfJsonPayload(MessageContext messageContext) {
    if (messageContext == null) {
        logger.error("#cachedCopyOfJsonPayload. Cannot copy JSON stream from message context. [null].");
        return null;
    }
    InputStream jsonStream = jsonStream(messageContext, true);
    if (jsonStream == null) {
        logger.error("#cachedCopyOfJsonPayload. Cannot copy JSON stream from message context. [null] stream.");
        return null;
    }
    String inputStreamCache = Long.toString(jsonStream.hashCode());
    Object o = messageContext.getProperty(inputStreamCache);
    if (o instanceof InputStream) {
        InputStream inputStream = (InputStream) o;
        try {
            inputStream.reset();
            if (logger.isDebugEnabled()) {
                logger.debug("#cachedCopyOfJsonPayload. Cache HIT");
            }
            return inputStream;
        } catch (IOException e) {
            logger.warn("#cachedCopyOfJsonPayload. Could not reuse the cached input stream. Error>>> "
                    + e.getLocalizedMessage());
        }
    }
    org.apache.commons.io.output.ByteArrayOutputStream out = new org.apache.commons.io.output.ByteArrayOutputStream();
    try {
        IOUtils.copy(jsonStream, out);
        out.flush();
        InputStream inputStream = toReadOnlyStream(new ByteArrayInputStream(out.toByteArray()));
        messageContext.setProperty(inputStreamCache, inputStream);
        if (logger.isDebugEnabled()) {
            logger.debug("#cachedCopyOfJsonPayload. Cache MISS");
        }
        return inputStream;
    } catch (IOException e) {
        logger.error("#cachedCopyOfJsonPayload. Could not copy the JSON stream from message context. Error>>> "
                + e.getLocalizedMessage());
    }
    return null;
}

---

From source file:org.apache.tika.parser.pkg.TikaArchiveStreamFactory.java

/**
 * Try to determine the type of Archiver
 * @param in input stream/*from  w w  w  . j a  v a2s .c  o  m*/
 * @return type of archiver if found
 * @throws ArchiveException if an archiver cannot be detected in the stream
 * @since 1.14
 */
public static String detect(InputStream in) throws ArchiveException {
    if (in == null) {
        throw new IllegalArgumentException("Stream must not be null.");
    }

    if (!in.markSupported()) {
        throw new IllegalArgumentException("Mark is not supported.");
    }

    final byte[] signature = new byte[SIGNATURE_SIZE];
    in.mark(signature.length);
    int signatureLength = -1;
    try {
        signatureLength = IOUtils.readFully(in, signature);
        in.reset();
    } catch (IOException e) {
        throw new ArchiveException("IOException while reading signature.");
    }

    if (ZipArchiveInputStream.matches(signature, signatureLength)) {
        return ZIP;
    } else if (JarArchiveInputStream.matches(signature, signatureLength)) {
        return JAR;
    }
    if (ArArchiveInputStream.matches(signature, signatureLength)) {
        return AR;
    } else if (CpioArchiveInputStream.matches(signature, signatureLength)) {
        return CPIO;
    } else if (ArjArchiveInputStream.matches(signature, signatureLength)) {
        return ARJ;
    } else if (SevenZFile.matches(signature, signatureLength)) {
        return SEVEN_Z;
    }

    // Dump needs a bigger buffer to check the signature;
    final byte[] dumpsig = new byte[DUMP_SIGNATURE_SIZE];
    in.mark(dumpsig.length);
    try {
        signatureLength = IOUtils.readFully(in, dumpsig);
        in.reset();
    } catch (IOException e) {
        throw new ArchiveException("IOException while reading dump signature");
    }
    if (DumpArchiveInputStream.matches(dumpsig, signatureLength)) {
        return DUMP;
    }

    // Tar needs an even bigger buffer to check the signature; read the first block
    final byte[] tarHeader = new byte[TAR_HEADER_SIZE];
    in.mark(tarHeader.length);
    try {
        signatureLength = IOUtils.readFully(in, tarHeader);
        in.reset();
    } catch (IOException e) {
        throw new ArchiveException("IOException while reading tar signature");
    }
    if (TarArchiveInputStream.matches(tarHeader, signatureLength)) {
        return TAR;
    }

    // COMPRESS-117 - improve auto-recognition
    if (signatureLength >= TAR_HEADER_SIZE) {
        TarArchiveInputStream tais = null;
        try {
            tais = new TarArchiveInputStream(new ByteArrayInputStream(tarHeader));
            // COMPRESS-191 - verify the header checksum
            if (tais.getNextTarEntry().isCheckSumOK()) {
                return TAR;
            }
        } catch (final Exception e) { // NOPMD
            // can generate IllegalArgumentException as well
            // as IOException
            // autodetection, simply not a TAR
            // ignored
        } finally {
            IOUtils.closeQuietly(tais);
        }
    }
    throw new ArchiveException("No Archiver found for the stream signature");
}

---

From source file:org.opendaylight.controller.config.yang.store.impl.HardcodedYangStoreService.java

@Override
public YangStoreSnapshot getYangStoreSnapshot() throws YangStoreException {
    for (InputStream inputStream : byteArrayInputStreams) {
        try {/* w w  w .  jav  a2 s  .co m*/
            inputStream.reset();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }
    return new MbeParser().parseYangFiles(byteArrayInputStreams);
}

---

From source file:org.openehealth.ipf.platform.camel.flow.render.SimpleMessageRenderer.java

private String render(InputStream stream) {
    try {/*from   w ww  . j av a 2s  .  c o m*/
        String result = IOUtils.toString(stream);
        stream.reset();
        return result;
    } catch (IOException e) {
        return null;
    }
}

---

From source file:com.ibm.og.client.CustomHttpEntity.java

@Override
// FIXME getContent is supposed to return a new instance of InputStream if isRepeatable is true -
// is it safe to simply reset the stream?
public InputStream getContent() throws IOException, IllegalStateException {
    this.requestContentStart = 0;
    this.requestContentFinish = 0;
    final InputStream content = this.request.getContent();
    content.reset();
    return content;
}

---

From source file:org.apache.nifi.processors.standard.util.crypto.CipherUtility.java

public static byte[] readBytesFromInputStream(InputStream in, String label, int limit, byte[] delimiter)
        throws IOException, ProcessException {
    if (in == null) {
        throw new IllegalArgumentException("Cannot read " + label + " from null InputStream");
    }//from   w  w w . j a va2s.  c  o m

    // If the value is not detected within the first n bytes, throw an exception
    in.mark(limit);

    // The first n bytes of the input stream contain the value up to the custom delimiter
    ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
    byte[] stoppedBy = StreamUtils.copyExclusive(in, bytesOut, limit + delimiter.length, delimiter);

    if (stoppedBy != null) {
        byte[] bytes = bytesOut.toByteArray();
        return bytes;
    }

    // If no delimiter was found, reset the cursor
    in.reset();
    return null;
}

---

From source file:org.opendaylight.controller.netconf.it.HardcodedYangStoreService.java

@Override
public YangStoreSnapshot getYangStoreSnapshot() throws YangStoreException {
    for (InputStream inputStream : byteArrayInputStreams) {
        try {/*from  w w  w  .j av  a 2 s  .  com*/
            inputStream.reset();
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    YangParserImpl yangParser = new YangParserImpl();
    final SchemaContext schemaContext = yangParser.resolveSchemaContext(
            new HashSet<>(yangParser.parseYangModelsFromStreamsMapped(byteArrayInputStreams).values()));
    YangStoreServiceImpl yangStoreService = new YangStoreServiceImpl(new SchemaContextProvider() {
        @Override
        public SchemaContext getSchemaContext() {
            return schemaContext;
        }
    });
    return yangStoreService.getYangStoreSnapshot();
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• »