Example usage for java.io DataInputStream readInt

Introduction

In this page you can find the example usage for java.io DataInputStream readInt.

Prototype

public final int readInt() throws IOException

Source Link

Document

See the general contract of the readInt method of DataInput.

Usage

From source file:Main.java

protected static int deserialiseLength(DataInputStream is, int max_length)

        throws IOException {
    int len;//from   w  ww . j  a v  a2  s  .  c o  m

    if (max_length < 256) {

        len = is.readByte() & 0xff;

    } else if (max_length < 65536) {

        len = is.readShort() & 0xffff;

    } else {

        len = is.readInt();
    }

    if (len > max_length) {

        throw (new IOException("Invalid DHT data length: max=" + max_length + ",actual=" + len));
    }

    return (len);
}

From source file:org.digidoc4j.utils.Helper.java

/**
 * @param stream aa//from  w  ww  .  j  a va 2 s. co m
 * @return aa
 * @throws IOException aa
 */
public static boolean isZipFile(InputStream stream) throws IOException {
    DataInputStream in = new DataInputStream(stream);

    if (stream.markSupported())
        stream.mark(INT_LENGTH);

    int test = in.readInt();

    if (stream.markSupported())
        stream.reset();

    final int zipVerificationCode = ZIP_VERIFICATION_CODE;
    return test == zipVerificationCode;
}

From source file:net.timewalker.ffmq4.storage.data.impl.journal.JournalRecovery.java

private static DataBlockWriteOperation readDataBlockWriteOperation(DataInputStream in) throws IOException {
    long transactionId = in.readLong();
    long blockOffset = in.readLong();
    int len = in.readInt();
    byte[] dataBlock = new byte[len];
    in.readFully(dataBlock);//from  ww w  .ja v a2s .  c  om

    return new DataBlockWriteOperation(transactionId, -1, blockOffset, dataBlock);
}

From source file:net.timewalker.ffmq4.storage.data.impl.journal.JournalRecovery.java

private static MetaDataWriteOperation readMetaDataWriteOperation(DataInputStream in) throws IOException {
    long transactionId = in.readLong();
    long metaDataOffset = in.readLong();
    int metaData = in.readInt();

    return new MetaDataWriteOperation(transactionId, metaDataOffset, metaData);
}

From source file:org.geoserver.wps.ppio.ZipArchivePPIO.java

/**
 * This method tells us if the provided {@link File} is a Zip File.
 * /*ww w . ja v  a2s.  c om*/
 * <p>
 * It throws {@link IllegalArgumentException} in case the provided file does not exists or is not a readable file.
 * 
 * @param file the {@link File} to check for zip
 * @throws IOException in case something bad happen
 */
public static boolean isZpFile(File file) {
    if (file == null || !file.exists() || !file.canRead()) {
        throw new IllegalArgumentException(
                "Provided File is not valid and/or reqadable! --> File:" + file != null ? file.getAbsolutePath()
                        : "null");
    }
    // Check if the file is a directory
    if (file.isDirectory()) {
        return false;
    }
    // Check on the path length
    if (file.length() < 4) {
        return false;
    }
    // Check on the first Integer
    DataInputStream in = null;
    try {
        in = new DataInputStream(new FileInputStream(file));

        int test = in.readInt();
        return test == 0x504b0304;
    } catch (IOException e) {
        if (LOGGER.isLoggable(Level.SEVERE)) {
            LOGGER.log(Level.SEVERE, e.getLocalizedMessage(), e);
        }
        return false;
    } finally {
        if (in != null) {
            org.apache.commons.io.IOUtils.closeQuietly(in);
        }
    }
}

From source file:net.timewalker.ffmq4.storage.data.impl.journal.JournalRecovery.java

private static MetaDataBlockWriteOperation readMetaDataBlockWriteOperation(DataInputStream in)
        throws IOException {
    long transactionId = in.readLong();
    long metaDataOffset = in.readLong();
    int len = in.readInt();
    byte[] metaData = new byte[len];
    in.readFully(metaData);/*from ww  w. j av a 2s  .c o m*/

    return new MetaDataBlockWriteOperation(transactionId, metaDataOffset, metaData);
}

From source file:org.eclipse.swt.snippets.Snippet319.java

static MyType restoreFromByteArray(byte[] bytes) {
    DataInputStream dataInStream = null;
    try {//from   w w w .  j  a va 2s .c  om
        ByteArrayInputStream byteInStream = new ByteArrayInputStream(bytes);
        dataInStream = new DataInputStream(byteInStream);
        int size = dataInStream.readInt();
        byte[] name = new byte[size];
        dataInStream.read(name);
        MyType result = new MyType();
        result.name = new String(name);
        result.time = dataInStream.readLong();
        return result;
    } catch (IOException ex) {
        return null;
    } finally {
        if (dataInStream != null) {
            try {
                dataInStream.close();
            } catch (IOException e) {
            }
        }
    }
}

From source file:com.adaptris.security.StdOutput.java

private static byte[] read(DataInputStream in) throws IOException {
    byte[] bytes = new byte[in.readInt()];
    if (bytes.length > 0) {
        in.read(bytes, 0, bytes.length);
    } else {//from  ww  w.ja  va  2s .c  o  m
        bytes = null;
    }
    return bytes;
}

From source file:hudson.console.ConsoleNote.java

/**
 * Skips the encoded console note./*  www  . ja  v a2s .co m*/
 */
public static void skip(DataInputStream in) throws IOException {
    byte[] preamble = new byte[PREAMBLE.length];
    in.readFully(preamble);
    if (!Arrays.equals(preamble, PREAMBLE))
        return; // not a valid preamble

    DataInputStream decoded = new DataInputStream(new UnbufferedBase64InputStream(in));
    int sz = decoded.readInt();
    IOUtils.skip(decoded, sz);

    byte[] postamble = new byte[POSTAMBLE.length];
    in.readFully(postamble);
}

From source file:ja.lingo.engine.mergedindex.ChannelMergedIndex.java

private static Map<Integer, IDictionaryIndex> _deserializeReaderIdToReaderMap(DataInputStream dis,
        Map<String, IDictionaryIndex> indexFileNameToReaderMap) throws IOException {
    Map<Integer, IDictionaryIndex> readerIdToReaderMap = new HashMap<Integer, IDictionaryIndex>();

    int readerCount = dis.readInt();

    for (int i = 0; i < readerCount; i++) {
        int readerId = dis.readInt();
        String indexFileName = dis.readUTF();

        IDictionaryIndex reader = indexFileNameToReaderMap.get(indexFileName);

        if (reader == null) {
            throw new IOException("Unable to retrieve reader with readerId=\"" + readerId
                    + "\" and indexFileName=\"" + indexFileName + "\"");
        }/*from  w ww. ja v  a 2 s.co  m*/

        readerIdToReaderMap.put(readerId, reader);
    }

    return readerIdToReaderMap;
}