Examples with CharBuffer java.nio.CharBuffer used on opensource projects

Example 86 with CharBuffer

use of java.nio.CharBuffer in project graphdb by neo4j-attic.

the class AbstractDynamicStore method allocateRecords.

public Collection<DynamicRecord> allocateRecords(long startBlock, char[] src) {
    assert getFileChannel() != null : "Store closed, null file channel";
    assert src != null : "Null src argument";
    List<DynamicRecord> recordList = new LinkedList<DynamicRecord>();
    long nextBlock = startBlock;
    long prevBlock = Record.NO_PREV_BLOCK.intValue();
    int srcOffset = 0;
    int dataSize = getBlockSize() - BLOCK_HEADER_SIZE;
    do {
        DynamicRecord record = new DynamicRecord(nextBlock);
        record.setCreated();
        record.setInUse(true);
        assert prevBlock != nextBlock;
        record.setPrevBlock(prevBlock);
        if ((src.length - srcOffset) * 2 > dataSize) {
            byte[] data = new byte[dataSize];
            CharBuffer charBuf = ByteBuffer.wrap(data).asCharBuffer();
            charBuf.put(src, srcOffset, dataSize / 2);
            record.setData(data);
            prevBlock = nextBlock;
            nextBlock = nextBlockId();
            record.setNextBlock(nextBlock);
            srcOffset += dataSize / 2;
        } else {
            if (srcOffset == 0) {
                record.setCharData(src);
            } else {
                byte[] data = new byte[(src.length - srcOffset) * 2];
                CharBuffer charBuf = ByteBuffer.wrap(data).asCharBuffer();
                charBuf.put(src, srcOffset, src.length - srcOffset);
                record.setData(data);
            }
            nextBlock = Record.NO_NEXT_BLOCK.intValue();
            record.setNextBlock(nextBlock);
        }
        recordList.add(record);
    } while (nextBlock != Record.NO_NEXT_BLOCK.intValue());
    return recordList;
}

Example 87 with CharBuffer

use of java.nio.CharBuffer in project XobotOS by xamarin.

the class OutputStreamWriter method write.

/**
     * Writes {@code count} characters starting at {@code offset} in {@code buf}
     * to this writer. The characters are immediately converted to bytes by the
     * character converter and stored in a local buffer. If the buffer gets full
     * as a result of the conversion, this writer is flushed.
     *
     * @param buffer
     *            the array containing characters to write.
     * @param offset
     *            the index of the first character in {@code buf} to write.
     * @param count
     *            the maximum number of characters to write.
     * @throws IndexOutOfBoundsException
     *             if {@code offset < 0} or {@code count < 0}, or if
     *             {@code offset + count} is greater than the size of
     *             {@code buf}.
     * @throws IOException
     *             if this writer has already been closed or another I/O error
     *             occurs.
     */
@Override
public void write(char[] buffer, int offset, int count) throws IOException {
    synchronized (lock) {
        checkStatus();
        Arrays.checkOffsetAndCount(buffer.length, offset, count);
        CharBuffer chars = CharBuffer.wrap(buffer, offset, count);
        convert(chars);
    }
}

Example 88 with CharBuffer

use of java.nio.CharBuffer in project XobotOS by xamarin.

the class OutputStreamWriter method write.

/**
     * Writes {@code count} characters starting at {@code offset} in {@code str}
     * to this writer. The characters are immediately converted to bytes by the
     * character converter and stored in a local buffer. If the buffer gets full
     * as a result of the conversion, this writer is flushed.
     *
     * @param str
     *            the string containing characters to write.
     * @param offset
     *            the start position in {@code str} for retrieving characters.
     * @param count
     *            the maximum number of characters to write.
     * @throws IOException
     *             if this writer has already been closed or another I/O error
     *             occurs.
     * @throws IndexOutOfBoundsException
     *             if {@code offset < 0} or {@code count < 0}, or if
     *             {@code offset + count} is bigger than the length of
     *             {@code str}.
     */
@Override
public void write(String str, int offset, int count) throws IOException {
    synchronized (lock) {
        if (count < 0) {
            throw new StringIndexOutOfBoundsException(str, offset, count);
        }
        if (str == null) {
            throw new NullPointerException("str == null");
        }
        if ((offset | count) < 0 || offset > str.length() - count) {
            throw new StringIndexOutOfBoundsException(str, offset, count);
        }
        checkStatus();
        CharBuffer chars = CharBuffer.wrap(str, offset, count + offset);
        convert(chars);
    }
}

Example 89 with CharBuffer

use of java.nio.CharBuffer in project android_frameworks_base by ResurrectionRemix.

the class FastPrintWriter method flushLocked.

private void flushLocked() throws IOException {
    //Log.i("PackageManager", "flush mPos=" + mPos);
    if (mPos > 0) {
        if (mOutputStream != null) {
            CharBuffer charBuffer = CharBuffer.wrap(mText, 0, mPos);
            CoderResult result = mCharset.encode(charBuffer, mBytes, true);
            while (!mIoError) {
                if (result.isError()) {
                    throw new IOException(result.toString());
                } else if (result.isOverflow()) {
                    flushBytesLocked();
                    result = mCharset.encode(charBuffer, mBytes, true);
                    continue;
                }
                break;
            }
            if (!mIoError) {
                flushBytesLocked();
                mOutputStream.flush();
            }
        } else if (mWriter != null) {
            if (!mIoError) {
                mWriter.write(mText, 0, mPos);
                mWriter.flush();
            }
        } else {
            int nonEolOff = 0;
            final int sepLen = mSeparator.length();
            final int len = sepLen < mPos ? sepLen : mPos;
            while (nonEolOff < len && mText[mPos - 1 - nonEolOff] == mSeparator.charAt(mSeparator.length() - 1 - nonEolOff)) {
                nonEolOff++;
            }
            if (nonEolOff >= mPos) {
                mPrinter.println("");
            } else {
                mPrinter.println(new String(mText, 0, mPos - nonEolOff));
            }
        }
        mPos = 0;
    }
}

Example 90 with CharBuffer

use of java.nio.CharBuffer in project android_frameworks_base by ResurrectionRemix.

the class StrictJarManifest method writeEntry.

private static void writeEntry(OutputStream os, Attributes.Name name, String value, CharsetEncoder encoder, ByteBuffer bBuf) throws IOException {
    String nameString = name.toString();
    os.write(nameString.getBytes(StandardCharsets.US_ASCII));
    os.write(VALUE_SEPARATOR);
    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);
    }
}