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

Example 36 with CharBuffer

use of java.nio.CharBuffer in project cassandra by apache.

the class TypeValidationTest method testValidUtf8.

@Test
public void testValidUtf8() throws UnsupportedEncodingException {
    assert Character.MAX_CODE_POINT == 0x0010ffff;
    CharBuffer cb = CharBuffer.allocate(2837314);
    // let's test all of the unicode space.
    for (int i = 0; i < Character.MAX_CODE_POINT; i++) {
        // valid byte sequences (gives us '?' instead), so there is no point testing them.
        if (i >= 55296 && i <= 57343)
            continue;
        char[] ch = Character.toChars(i);
        for (char c : ch) cb.append(c);
    }
    String s = new String(cb.array());
    byte[] arr = s.getBytes("UTF8");
    ByteBuffer buf = ByteBuffer.wrap(arr);
    UTF8Type.instance.validate(buf);
    // some you might not expect.
    UTF8Type.instance.validate(ByteBuffer.wrap(new byte[] {}));
    // valid Utf8, unspecified in modified utf8.
    UTF8Type.instance.validate(ByteBuffer.wrap(new byte[] { 0 }));
    // modified utf8 null.
    UTF8Type.instance.validate(ByteBuffer.wrap(new byte[] { 99, (byte) 0xc0, (byte) 0x80, 112 }));
    // edges, for my sanity.
    UTF8Type.instance.validate(ByteBuffer.wrap(new byte[] { (byte) 0xc2, (byte) 0x81 }));
    UTF8Type.instance.validate(ByteBuffer.wrap(new byte[] { (byte) 0xe0, (byte) 0xa0, (byte) 0x81 }));
    UTF8Type.instance.validate(ByteBuffer.wrap(new byte[] { (byte) 0xf0, (byte) 0x90, (byte) 0x81, (byte) 0x81 }));
}

Example 37 with CharBuffer

use of java.nio.CharBuffer in project platform_frameworks_base by android.

the class TimeFormatter method formatInternal.

/**
     * Format the specified {@code wallTime} using {@code pattern}. The output is written to
     * {@link #outputBuilder}.
     */
private void formatInternal(String pattern, ZoneInfo.WallTime wallTime, ZoneInfo zoneInfo) {
    CharBuffer formatBuffer = CharBuffer.wrap(pattern);
    while (formatBuffer.remaining() > 0) {
        boolean outputCurrentChar = true;
        char currentChar = formatBuffer.get(formatBuffer.position());
        if (currentChar == '%') {
            outputCurrentChar = handleToken(formatBuffer, wallTime, zoneInfo);
        }
        if (outputCurrentChar) {
            outputBuilder.append(formatBuffer.get(formatBuffer.position()));
        }
        formatBuffer.position(formatBuffer.position() + 1);
    }
}

Example 38 with CharBuffer

use of java.nio.CharBuffer in project cassandra by apache.

the class CBUtil method decodeString.

// Taken from Netty's ChannelBuffers.decodeString(). We need to use our own decoder to properly handle invalid
// UTF-8 sequences.  See CASSANDRA-8101 for more details.  This can be removed once https://github.com/netty/netty/pull/2999
// is resolved in a release used by Cassandra.
private static String decodeString(ByteBuffer src) throws CharacterCodingException {
    // the decoder needs to be reset every time we use it, hence the copy per thread
    CharsetDecoder theDecoder = TL_UTF8_DECODER.get();
    theDecoder.reset();
    CharBuffer dst = TL_CHAR_BUFFER.get();
    int capacity = (int) ((double) src.remaining() * theDecoder.maxCharsPerByte());
    if (dst == null) {
        capacity = Math.max(capacity, 4096);
        dst = CharBuffer.allocate(capacity);
        TL_CHAR_BUFFER.set(dst);
    } else {
        dst.clear();
        if (dst.capacity() < capacity) {
            dst = CharBuffer.allocate(capacity);
            TL_CHAR_BUFFER.set(dst);
        }
    }
    CoderResult cr = theDecoder.decode(src, dst, true);
    if (!cr.isUnderflow())
        cr.throwException();
    return dst.flip().toString();
}

Example 39 with CharBuffer

use of java.nio.CharBuffer in project carat by amplab.

the class FastXmlSerializer method flush.

public void flush() 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 (true) {
                if (result.isError()) {
                    throw new IOException(result.toString());
                } else if (result.isOverflow()) {
                    flushBytes();
                    result = mCharset.encode(charBuffer, mBytes, true);
                    continue;
                }
                break;
            }
            flushBytes();
            mOutputStream.flush();
        } else {
            mWriter.write(mText, 0, mPos);
            mWriter.flush();
        }
        mPos = 0;
    }
}

Example 40 with CharBuffer

use of java.nio.CharBuffer in project platform_frameworks_base by android.

the class FastXmlSerializer method flush.

public void flush() 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 (true) {
                if (result.isError()) {
                    throw new IOException(result.toString());
                } else if (result.isOverflow()) {
                    flushBytes();
                    result = mCharset.encode(charBuffer, mBytes, true);
                    continue;
                }
                break;
            }
            flushBytes();
            mOutputStream.flush();
        } else {
            mWriter.write(mText, 0, mPos);
            mWriter.flush();
        }
        mPos = 0;
    }
}