Example usage for java.nio ByteBuffer array

Introduction

In this page you can find the example usage for java.nio ByteBuffer array.

Prototype

public final byte[] array() 

Source Link

Document

Returns the byte array which this buffer is based on, if there is one.

Usage

From source file:android.framework.util.jar.Manifest.java

private static void writeEntry(OutputStream os, Attributes.Name name, String value, CharsetEncoder encoder,
        ByteBuffer bBuf) throws IOException {
    String nameString = name.getName();
    os.write(nameString.getBytes(Charsets.US_ASCII));
    os.write(VALUE_SEPARATOR);/*from   www.ja  v  a  2 s.c  o  m*/

    encoder.reset();
    bBuf.clear().limit(LINE_LENGTH_LIMIT - nameString.length() - 2);

    CharBuffer cBuf = CharBuffer.wrap(value);

    while (true) {
        CoderResult r = encoder.encode(cBuf, bBuf, true);
        if (CoderResult.UNDERFLOW == r) {
            r = encoder.flush(bBuf);
        }
        os.write(bBuf.array(), bBuf.arrayOffset(), bBuf.position());
        os.write(LINE_SEPARATOR);
        if (CoderResult.UNDERFLOW == r) {
            break;
        }
        os.write(' ');
        bBuf.clear().limit(LINE_LENGTH_LIMIT - 1);
    }
}

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From source file:de.csdev.ebus.command.EBusCommandUtils.java

/**
 * Builds an escaped master telegram part or if slaveData is used a complete telegram incl. master ACK and SYN
 *
 * @param source//from w  ww  .j  a v  a 2  s . c  om
 * @param target
 * @param command
 * @param masterData
 * @return
 * @throws EBusTypeException
 */
public static ByteBuffer buildPartMasterTelegram(byte source, byte target, byte[] command, byte[] masterData)
        throws EBusTypeException {

    ByteBuffer buf = ByteBuffer.allocate(50);

    buf.put(source); // QQ - Source
    buf.put(target); // ZZ - Target
    buf.put(command); // PB SB - Command
    buf.put((byte) masterData.length); // NN - Length, will be set later

    // add the escaped bytes
    for (byte b : masterData) {
        buf.put(escapeSymbol(b));
    }

    // calculate crc
    byte crc8 = EBusUtils.crc8(buf.array(), buf.position());

    buf.put(escapeSymbol(crc8));

    // set limit and reset position
    buf.limit(buf.position());
    buf.position(0);

    return buf;
}

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From source file:de.csdev.ebus.command.EBusCommandUtils.java

/**
 * Build an escaped telegram part for a slave answer
 *
 * @param slaveData/*from   w ww.ja  v  a  2  s.co m*/
 * @return
 * @throws EBusTypeException
 */
public static ByteBuffer buildPartSlave(byte[] slaveData) throws EBusTypeException {

    ByteBuffer buf = ByteBuffer.allocate(50);

    buf.put(EBusConsts.ACK_OK); // ACK

    // if payload available
    if (slaveData != null && slaveData.length > 0) {
        buf.put((byte) slaveData.length); // NN - Length

        // add the escaped bytes
        for (byte b : slaveData) {
            buf.put(escapeSymbol(b));
        }

        // calculate crc
        byte crc8 = EBusUtils.crc8(buf.array(), buf.position());

        // add the crc, maybe escaped
        buf.put(escapeSymbol(crc8));
    } else {
        // only set len = 0
        buf.put((byte) 0x00); // NN - Length
    }

    // set limit and reset position
    buf.limit(buf.position());
    buf.position(0);

    return buf;
}

---

From source file:com.blm.orc.ReaderImpl.java

/**
 * Ensure this is an ORC file to prevent users from trying to read text
 * files or RC files as ORC files./* w w  w .  jav  a2 s  .c  o m*/
 * @param in the file being read
 * @param path the filename for error messages
 * @param psLen the postscript length
 * @param buffer the tail of the file
 * @throws IOException
 */
static void ensureOrcFooter(FSDataInputStream in, Path path, int psLen, ByteBuffer buffer) throws IOException {
    int len = OrcFile.MAGIC.length();
    if (psLen < len + 1) {
        throw new IOException("Malformed ORC file " + path + ". Invalid postscript length " + psLen);
    }
    int offset = buffer.arrayOffset() + buffer.position() + buffer.limit() - 1 - len;
    byte[] array = buffer.array();
    // now look for the magic string at the end of the postscript.
    if (!Text.decode(array, offset, len).equals(OrcFile.MAGIC)) {
        // If it isn't there, this may be the 0.11.0 version of ORC.
        // Read the first 3 bytes of the file to check for the header
        in.seek(0);
        byte[] header = new byte[len];
        in.readFully(header, 0, len);
        // if it isn't there, this isn't an ORC file
        if (!Text.decode(header, 0, len).equals(OrcFile.MAGIC)) {
            throw new IOException("Malformed ORC file " + path + ". Invalid postscript.");
        }
    }
}

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From source file:com.github.seqware.queryengine.plugins.runners.hbasemr.MRHBasePluginRunner.java

public static String[] serializeParametersToString(Object[] parameters, PluginInterface mapReducePlugin,
        byte[][] sSet, byte[] dSet) {
    int num_guaranteed_parameters = 6;
    String[] str_params = new String[num_guaranteed_parameters];
    byte[] ext_serials = SerializationUtils.serialize(parameters);
    byte[] int_serials = SerializationUtils.serialize(mapReducePlugin.getInternalParameters());
    str_params[EXTERNAL_PARAMETERS] = Base64.encodeBase64String(ext_serials);
    str_params[INTERNAL_PARAMETERS] = Base64.encodeBase64String(int_serials);
    ByteBuffer bBuffer = ByteBuffer.allocate(1024 * 1024); // one MB should be enough for now
    bBuffer.putInt(sSet.length);/*w  ww . j a v  a 2s  . c  o  m*/
    for (byte[] arr : sSet) {
        bBuffer.putInt(arr.length);
        bBuffer.put(arr);
    }
    str_params[NUM_AND_SOURCE_FEATURE_SETS] = Base64.encodeBase64String(bBuffer.array());
    str_params[DESTINATION_FEATURE_SET] = Base64.encodeBase64String(dSet);
    str_params[SETTINGS_MAP] = Base64
            .encodeBase64String(SerializationUtils.serialize(new Object[] { Constants.getSETTINGS_MAP() }));
    str_params[PLUGIN_CLASS] = Base64
            .encodeBase64String(SerializationUtils.serialize(mapReducePlugin.getClass()));

    return str_params;
}

---

From source file:Main.java

/**
 * //from w w  w .ja v  a  2 s.c  om
 * @return Bitmap's RGBA byte array
 */
public static byte[] getImageRGBA(Bitmap inputBitmap) {
    Config config = inputBitmap.getConfig();
    ByteBuffer buffer;

    Bitmap bitmap;
    /**
     * if bitmap size is not 32*32 create scaled bitmap
     */

    if (inputBitmap.getWidth() != 32 || inputBitmap.getHeight() != 32) {
        Log.d(TAG, "bitmap resized to 32x32");
        bitmap = Bitmap.createScaledBitmap(inputBitmap, 32, 32, false);
    } else {
        bitmap = inputBitmap;
    }
    /**
     * if bitmap is not ARGB_8888 format, copy bitmap with ARGB_8888 format
     */
    if (!config.equals(Bitmap.Config.ARGB_8888)) {
        Bitmap bitmapARBG = bitmap.copy(Bitmap.Config.ARGB_8888, false);
        buffer = ByteBuffer.allocate(bitmapARBG.getByteCount());
        bitmapARBG.copyPixelsToBuffer(buffer);
        bitmapARBG.recycle();
    } else {
        buffer = ByteBuffer.allocate(bitmap.getByteCount());
        bitmap.copyPixelsToBuffer(buffer);
    }
    return buffer.array();
}

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From source file:net.darkmist.alib.io.BufferUtil.java

public static byte[] asBytes(ByteBuffer buf) {
    buf = buf.duplicate();//from ww w  .  ja  v  a 2  s .c o m
    /* To use buf.array() the buffer must:
     *    be writable as the array will be writable
     *    have arrayOffset() == 0 or the array will not start at the right location
     *    the returned array must be the same length as the buffer's limit or it will be the wrong size.
     */
    if (!buf.isReadOnly() && buf.hasArray() && buf.arrayOffset() == 0) {
        logger.debug("!read-only, hasArray && offset is 0");
        byte[] ret = buf.array();

        if (ret.length == buf.limit())
            return ret;
        logger.debug("length of array !=limit, doing copy...");
    }

    byte[] bytes = new byte[buf.limit()];
    buf.get(bytes, 0, buf.limit());
    return bytes;
}

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From source file:com.ah.ui.actions.home.clientManagement.service.CertificateGenSV.java

@SuppressWarnings("resource")
public static byte[] readFromFile(File file) throws IOException {
    FileChannel fileChannel = new FileInputStream(file).getChannel();
    ByteBuffer bb = ByteBuffer.allocate((int) fileChannel.size());
    fileChannel.read(bb);//ww w. j  ava 2 s.c om
    fileChannel.close();
    bb.flip();
    byte[] bytes;

    if (bb.hasArray()) {
        bytes = bb.array();
    } else {
        bytes = new byte[bb.limit()];
        bb.get(bytes);
    }

    return bytes;
}

---

From source file:com.ibm.sbt.service.basic.ProxyService.java

private static byte[] decodeBase64(String s) {
    try {//  ww  w . j  a v  a  2  s  .  c  o  m
        Base64.InputStream b64 = new Base64.InputStream(new ReaderInputStream(new StringReader(s)));
        ByteBuffer bb = ByteBuffer.allocate(1024 * 4); // max cookie size
        int byt;
        while ((byt = b64.read()) >= 0) {
            bb.put((byte) (byt & 0xFF));
        }
        return bb.array();
    } catch (IOException ex) {
        ex.printStackTrace();
        return null;
    }
}

---

From source file:com.kactech.otj.Utils.java

public static byte[] readBytes(File f) throws IOException {
    FileInputStream fis = new FileInputStream(f);
    FileChannel fChannel = fis.getChannel();
    byte[] barray = new byte[(int) f.length()];
    ByteBuffer bb = ByteBuffer.wrap(barray);
    //bb.order(ByteOrder.LITTLE_ENDIAN);
    fChannel.read(bb);//w w  w. j  av  a 2 s.c  o m
    fChannel.close();
    fis.close();
    return bb.array();
}

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