io.netty.buffer.AbstractByteBuf Maven / Gradle / Ivy
/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you under the Apache License,
* version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at:
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
package io.netty.buffer;
import io.netty.util.AsciiString;
import io.netty.util.ByteProcessor;
import io.netty.util.CharsetUtil;
import io.netty.util.IllegalReferenceCountException;
import io.netty.util.ResourceLeakDetector;
import io.netty.util.ResourceLeakDetectorFactory;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.PlatformDependent;
import io.netty.util.internal.StringUtil;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.channels.FileChannel;
import java.nio.channels.GatheringByteChannel;
import java.nio.channels.ScatteringByteChannel;
import java.nio.charset.Charset;
import static io.netty.util.internal.MathUtil.isOutOfBounds;
import static io.netty.util.internal.ObjectUtil.checkPositiveOrZero;
/**
* A skeletal implementation of a buffer.
*/
public abstract class AbstractByteBuf extends ByteBuf {
private static final InternalLogger logger = InternalLoggerFactory.getInstance(AbstractByteBuf.class);
private static final String LEGACY_PROP_CHECK_ACCESSIBLE = "io.netty.buffer.bytebuf.checkAccessible";
private static final String PROP_CHECK_ACCESSIBLE = "io.netty.buffer.checkAccessible";
static final boolean checkAccessible; // accessed from CompositeByteBuf
private static final String PROP_CHECK_BOUNDS = "io.netty.buffer.checkBounds";
private static final boolean checkBounds;
static {
if (SystemPropertyUtil.contains(PROP_CHECK_ACCESSIBLE)) {
checkAccessible = SystemPropertyUtil.getBoolean(PROP_CHECK_ACCESSIBLE, true);
} else {
checkAccessible = SystemPropertyUtil.getBoolean(LEGACY_PROP_CHECK_ACCESSIBLE, true);
}
checkBounds = SystemPropertyUtil.getBoolean(PROP_CHECK_BOUNDS, true);
if (logger.isDebugEnabled()) {
logger.debug("-D{}: {}", PROP_CHECK_ACCESSIBLE, checkAccessible);
logger.debug("-D{}: {}", PROP_CHECK_BOUNDS, checkBounds);
}
}
static final ResourceLeakDetector leakDetector =
ResourceLeakDetectorFactory.instance().newResourceLeakDetector(ByteBuf.class);
int readerIndex;
int writerIndex;
private int markedReaderIndex;
private int markedWriterIndex;
private int maxCapacity;
protected AbstractByteBuf(int maxCapacity) {
checkPositiveOrZero(maxCapacity, "maxCapacity");
this.maxCapacity = maxCapacity;
}
@Override
public boolean isReadOnly() {
return false;
}
@SuppressWarnings("deprecation")
@Override
public ByteBuf asReadOnly() {
if (isReadOnly()) {
return this;
}
return Unpooled.unmodifiableBuffer(this);
}
@Override
public int maxCapacity() {
return maxCapacity;
}
protected final void maxCapacity(int maxCapacity) {
this.maxCapacity = maxCapacity;
}
@Override
public int readerIndex() {
return readerIndex;
}
private static void checkIndexBounds(final int readerIndex, final int writerIndex, final int capacity) {
if (readerIndex < 0 || readerIndex > writerIndex || writerIndex > capacity) {
throw new IndexOutOfBoundsException(String.format(
"readerIndex: %d, writerIndex: %d (expected: 0 <= readerIndex <= writerIndex <= capacity(%d))",
readerIndex, writerIndex, capacity));
}
}
@Override
public ByteBuf readerIndex(int readerIndex) {
if (checkBounds) {
checkIndexBounds(readerIndex, writerIndex, capacity());
}
this.readerIndex = readerIndex;
return this;
}
@Override
public int writerIndex() {
return writerIndex;
}
@Override
public ByteBuf writerIndex(int writerIndex) {
if (checkBounds) {
checkIndexBounds(readerIndex, writerIndex, capacity());
}
this.writerIndex = writerIndex;
return this;
}
@Override
public ByteBuf setIndex(int readerIndex, int writerIndex) {
if (checkBounds) {
checkIndexBounds(readerIndex, writerIndex, capacity());
}
setIndex0(readerIndex, writerIndex);
return this;
}
@Override
public ByteBuf clear() {
readerIndex = writerIndex = 0;
return this;
}
@Override
public boolean isReadable() {
return writerIndex > readerIndex;
}
@Override
public boolean isReadable(int numBytes) {
return writerIndex - readerIndex >= numBytes;
}
@Override
public boolean isWritable() {
return capacity() > writerIndex;
}
@Override
public boolean isWritable(int numBytes) {
return capacity() - writerIndex >= numBytes;
}
@Override
public int readableBytes() {
return writerIndex - readerIndex;
}
@Override
public int writableBytes() {
return capacity() - writerIndex;
}
@Override
public int maxWritableBytes() {
return maxCapacity() - writerIndex;
}
@Override
public ByteBuf markReaderIndex() {
markedReaderIndex = readerIndex;
return this;
}
@Override
public ByteBuf resetReaderIndex() {
readerIndex(markedReaderIndex);
return this;
}
@Override
public ByteBuf markWriterIndex() {
markedWriterIndex = writerIndex;
return this;
}
@Override
public ByteBuf resetWriterIndex() {
writerIndex(markedWriterIndex);
return this;
}
@Override
public ByteBuf discardReadBytes() {
if (readerIndex == 0) {
ensureAccessible();
return this;
}
if (readerIndex != writerIndex) {
setBytes(0, this, readerIndex, writerIndex - readerIndex);
writerIndex -= readerIndex;
adjustMarkers(readerIndex);
readerIndex = 0;
} else {
ensureAccessible();
adjustMarkers(readerIndex);
writerIndex = readerIndex = 0;
}
return this;
}
@Override
public ByteBuf discardSomeReadBytes() {
if (readerIndex > 0) {
if (readerIndex == writerIndex) {
ensureAccessible();
adjustMarkers(readerIndex);
writerIndex = readerIndex = 0;
return this;
}
if (readerIndex >= capacity() >>> 1) {
setBytes(0, this, readerIndex, writerIndex - readerIndex);
writerIndex -= readerIndex;
adjustMarkers(readerIndex);
readerIndex = 0;
return this;
}
}
ensureAccessible();
return this;
}
protected final void adjustMarkers(int decrement) {
if (markedReaderIndex <= decrement) {
markedReaderIndex = 0;
if (markedWriterIndex <= decrement) {
markedWriterIndex = 0;
} else {
markedWriterIndex -= decrement;
}
} else {
markedReaderIndex -= decrement;
markedWriterIndex -= decrement;
}
}
// Called after a capacity reduction
protected final void trimIndicesToCapacity(int newCapacity) {
if (writerIndex() > newCapacity) {
setIndex0(Math.min(readerIndex(), newCapacity), newCapacity);
}
}
@Override
public ByteBuf ensureWritable(int minWritableBytes) {
ensureWritable0(checkPositiveOrZero(minWritableBytes, "minWritableBytes"));
return this;
}
final void ensureWritable0(int minWritableBytes) {
final int writerIndex = writerIndex();
final int targetCapacity = writerIndex + minWritableBytes;
// using non-short-circuit & to reduce branching - this is a hot path and targetCapacity should rarely overflow
if (targetCapacity >= 0 & targetCapacity <= capacity()) {
ensureAccessible();
return;
}
if (checkBounds && (targetCapacity < 0 || targetCapacity > maxCapacity)) {
ensureAccessible();
throw new IndexOutOfBoundsException(String.format(
"writerIndex(%d) + minWritableBytes(%d) exceeds maxCapacity(%d): %s",
writerIndex, minWritableBytes, maxCapacity, this));
}
// Normalize the target capacity to the power of 2.
final int fastWritable = maxFastWritableBytes();
int newCapacity = fastWritable >= minWritableBytes ? writerIndex + fastWritable
: alloc().calculateNewCapacity(targetCapacity, maxCapacity);
// Adjust to the new capacity.
capacity(newCapacity);
}
@Override
public int ensureWritable(int minWritableBytes, boolean force) {
ensureAccessible();
checkPositiveOrZero(minWritableBytes, "minWritableBytes");
if (minWritableBytes <= writableBytes()) {
return 0;
}
final int maxCapacity = maxCapacity();
final int writerIndex = writerIndex();
if (minWritableBytes > maxCapacity - writerIndex) {
if (!force || capacity() == maxCapacity) {
return 1;
}
capacity(maxCapacity);
return 3;
}
int fastWritable = maxFastWritableBytes();
int newCapacity = fastWritable >= minWritableBytes ? writerIndex + fastWritable
: alloc().calculateNewCapacity(writerIndex + minWritableBytes, maxCapacity);
// Adjust to the new capacity.
capacity(newCapacity);
return 2;
}
@Override
public ByteBuf order(ByteOrder endianness) {
if (endianness == order()) {
return this;
}
ObjectUtil.checkNotNull(endianness, "endianness");
return newSwappedByteBuf();
}
/**
* Creates a new {@link SwappedByteBuf} for this {@link ByteBuf} instance.
*/
protected SwappedByteBuf newSwappedByteBuf() {
return new SwappedByteBuf(this);
}
@Override
public byte getByte(int index) {
checkIndex(index);
return _getByte(index);
}
protected abstract byte _getByte(int index);
@Override
public boolean getBoolean(int index) {
return getByte(index) != 0;
}
@Override
public short getUnsignedByte(int index) {
return (short) (getByte(index) & 0xFF);
}
@Override
public short getShort(int index) {
checkIndex(index, 2);
return _getShort(index);
}
protected abstract short _getShort(int index);
@Override
public short getShortLE(int index) {
checkIndex(index, 2);
return _getShortLE(index);
}
protected abstract short _getShortLE(int index);
@Override
public int getUnsignedShort(int index) {
return getShort(index) & 0xFFFF;
}
@Override
public int getUnsignedShortLE(int index) {
return getShortLE(index) & 0xFFFF;
}
@Override
public int getUnsignedMedium(int index) {
checkIndex(index, 3);
return _getUnsignedMedium(index);
}
protected abstract int _getUnsignedMedium(int index);
@Override
public int getUnsignedMediumLE(int index) {
checkIndex(index, 3);
return _getUnsignedMediumLE(index);
}
protected abstract int _getUnsignedMediumLE(int index);
@Override
public int getMedium(int index) {
int value = getUnsignedMedium(index);
if ((value & 0x800000) != 0) {
value |= 0xff000000;
}
return value;
}
@Override
public int getMediumLE(int index) {
int value = getUnsignedMediumLE(index);
if ((value & 0x800000) != 0) {
value |= 0xff000000;
}
return value;
}
@Override
public int getInt(int index) {
checkIndex(index, 4);
return _getInt(index);
}
protected abstract int _getInt(int index);
@Override
public int getIntLE(int index) {
checkIndex(index, 4);
return _getIntLE(index);
}
protected abstract int _getIntLE(int index);
@Override
public long getUnsignedInt(int index) {
return getInt(index) & 0xFFFFFFFFL;
}
@Override
public long getUnsignedIntLE(int index) {
return getIntLE(index) & 0xFFFFFFFFL;
}
@Override
public long getLong(int index) {
checkIndex(index, 8);
return _getLong(index);
}
protected abstract long _getLong(int index);
@Override
public long getLongLE(int index) {
checkIndex(index, 8);
return _getLongLE(index);
}
protected abstract long _getLongLE(int index);
@Override
public char getChar(int index) {
return (char) getShort(index);
}
@Override
public float getFloat(int index) {
return Float.intBitsToFloat(getInt(index));
}
@Override
public double getDouble(int index) {
return Double.longBitsToDouble(getLong(index));
}
@Override
public ByteBuf getBytes(int index, byte[] dst) {
getBytes(index, dst, 0, dst.length);
return this;
}
@Override
public ByteBuf getBytes(int index, ByteBuf dst) {
getBytes(index, dst, dst.writableBytes());
return this;
}
@Override
public ByteBuf getBytes(int index, ByteBuf dst, int length) {
getBytes(index, dst, dst.writerIndex(), length);
dst.writerIndex(dst.writerIndex() + length);
return this;
}
@Override
public CharSequence getCharSequence(int index, int length, Charset charset) {
if (CharsetUtil.US_ASCII.equals(charset) || CharsetUtil.ISO_8859_1.equals(charset)) {
// ByteBufUtil.getBytes(...) will return a new copy which the AsciiString uses directly
return new AsciiString(ByteBufUtil.getBytes(this, index, length, true), false);
}
return toString(index, length, charset);
}
@Override
public CharSequence readCharSequence(int length, Charset charset) {
CharSequence sequence = getCharSequence(readerIndex, length, charset);
readerIndex += length;
return sequence;
}
@Override
public ByteBuf setByte(int index, int value) {
checkIndex(index);
_setByte(index, value);
return this;
}
protected abstract void _setByte(int index, int value);
@Override
public ByteBuf setBoolean(int index, boolean value) {
setByte(index, value? 1 : 0);
return this;
}
@Override
public ByteBuf setShort(int index, int value) {
checkIndex(index, 2);
_setShort(index, value);
return this;
}
protected abstract void _setShort(int index, int value);
@Override
public ByteBuf setShortLE(int index, int value) {
checkIndex(index, 2);
_setShortLE(index, value);
return this;
}
protected abstract void _setShortLE(int index, int value);
@Override
public ByteBuf setChar(int index, int value) {
setShort(index, value);
return this;
}
@Override
public ByteBuf setMedium(int index, int value) {
checkIndex(index, 3);
_setMedium(index, value);
return this;
}
protected abstract void _setMedium(int index, int value);
@Override
public ByteBuf setMediumLE(int index, int value) {
checkIndex(index, 3);
_setMediumLE(index, value);
return this;
}
protected abstract void _setMediumLE(int index, int value);
@Override
public ByteBuf setInt(int index, int value) {
checkIndex(index, 4);
_setInt(index, value);
return this;
}
protected abstract void _setInt(int index, int value);
@Override
public ByteBuf setIntLE(int index, int value) {
checkIndex(index, 4);
_setIntLE(index, value);
return this;
}
protected abstract void _setIntLE(int index, int value);
@Override
public ByteBuf setFloat(int index, float value) {
setInt(index, Float.floatToRawIntBits(value));
return this;
}
@Override
public ByteBuf setLong(int index, long value) {
checkIndex(index, 8);
_setLong(index, value);
return this;
}
protected abstract void _setLong(int index, long value);
@Override
public ByteBuf setLongLE(int index, long value) {
checkIndex(index, 8);
_setLongLE(index, value);
return this;
}
protected abstract void _setLongLE(int index, long value);
@Override
public ByteBuf setDouble(int index, double value) {
setLong(index, Double.doubleToRawLongBits(value));
return this;
}
@Override
public ByteBuf setBytes(int index, byte[] src) {
setBytes(index, src, 0, src.length);
return this;
}
@Override
public ByteBuf setBytes(int index, ByteBuf src) {
setBytes(index, src, src.readableBytes());
return this;
}
private static void checkReadableBounds(final ByteBuf src, final int length) {
if (length > src.readableBytes()) {
throw new IndexOutOfBoundsException(String.format(
"length(%d) exceeds src.readableBytes(%d) where src is: %s", length, src.readableBytes(), src));
}
}
@Override
public ByteBuf setBytes(int index, ByteBuf src, int length) {
checkIndex(index, length);
ObjectUtil.checkNotNull(src, "src");
if (checkBounds) {
checkReadableBounds(src, length);
}
setBytes(index, src, src.readerIndex(), length);
src.readerIndex(src.readerIndex() + length);
return this;
}
@Override
public ByteBuf setZero(int index, int length) {
if (length == 0) {
return this;
}
checkIndex(index, length);
int nLong = length >>> 3;
int nBytes = length & 7;
for (int i = nLong; i > 0; i --) {
_setLong(index, 0);
index += 8;
}
if (nBytes == 4) {
_setInt(index, 0);
// Not need to update the index as we not will use it after this.
} else if (nBytes < 4) {
for (int i = nBytes; i > 0; i --) {
_setByte(index, (byte) 0);
index ++;
}
} else {
_setInt(index, 0);
index += 4;
for (int i = nBytes - 4; i > 0; i --) {
_setByte(index, (byte) 0);
index ++;
}
}
return this;
}
@Override
public int setCharSequence(int index, CharSequence sequence, Charset charset) {
return setCharSequence0(index, sequence, charset, false);
}
private int setCharSequence0(int index, CharSequence sequence, Charset charset, boolean expand) {
if (charset.equals(CharsetUtil.UTF_8)) {
int length = ByteBufUtil.utf8MaxBytes(sequence);
if (expand) {
ensureWritable0(length);
checkIndex0(index, length);
} else {
checkIndex(index, length);
}
return ByteBufUtil.writeUtf8(this, index, length, sequence, sequence.length());
}
if (charset.equals(CharsetUtil.US_ASCII) || charset.equals(CharsetUtil.ISO_8859_1)) {
int length = sequence.length();
if (expand) {
ensureWritable0(length);
checkIndex0(index, length);
} else {
checkIndex(index, length);
}
return ByteBufUtil.writeAscii(this, index, sequence, length);
}
byte[] bytes = sequence.toString().getBytes(charset);
if (expand) {
ensureWritable0(bytes.length);
// setBytes(...) will take care of checking the indices.
}
setBytes(index, bytes);
return bytes.length;
}
@Override
public byte readByte() {
checkReadableBytes0(1);
int i = readerIndex;
byte b = _getByte(i);
readerIndex = i + 1;
return b;
}
@Override
public boolean readBoolean() {
return readByte() != 0;
}
@Override
public short readUnsignedByte() {
return (short) (readByte() & 0xFF);
}
@Override
public short readShort() {
checkReadableBytes0(2);
short v = _getShort(readerIndex);
readerIndex += 2;
return v;
}
@Override
public short readShortLE() {
checkReadableBytes0(2);
short v = _getShortLE(readerIndex);
readerIndex += 2;
return v;
}
@Override
public int readUnsignedShort() {
return readShort() & 0xFFFF;
}
@Override
public int readUnsignedShortLE() {
return readShortLE() & 0xFFFF;
}
@Override
public int readMedium() {
int value = readUnsignedMedium();
if ((value & 0x800000) != 0) {
value |= 0xff000000;
}
return value;
}
@Override
public int readMediumLE() {
int value = readUnsignedMediumLE();
if ((value & 0x800000) != 0) {
value |= 0xff000000;
}
return value;
}
@Override
public int readUnsignedMedium() {
checkReadableBytes0(3);
int v = _getUnsignedMedium(readerIndex);
readerIndex += 3;
return v;
}
@Override
public int readUnsignedMediumLE() {
checkReadableBytes0(3);
int v = _getUnsignedMediumLE(readerIndex);
readerIndex += 3;
return v;
}
@Override
public int readInt() {
checkReadableBytes0(4);
int v = _getInt(readerIndex);
readerIndex += 4;
return v;
}
@Override
public int readIntLE() {
checkReadableBytes0(4);
int v = _getIntLE(readerIndex);
readerIndex += 4;
return v;
}
@Override
public long readUnsignedInt() {
return readInt() & 0xFFFFFFFFL;
}
@Override
public long readUnsignedIntLE() {
return readIntLE() & 0xFFFFFFFFL;
}
@Override
public long readLong() {
checkReadableBytes0(8);
long v = _getLong(readerIndex);
readerIndex += 8;
return v;
}
@Override
public long readLongLE() {
checkReadableBytes0(8);
long v = _getLongLE(readerIndex);
readerIndex += 8;
return v;
}
@Override
public char readChar() {
return (char) readShort();
}
@Override
public float readFloat() {
return Float.intBitsToFloat(readInt());
}
@Override
public double readDouble() {
return Double.longBitsToDouble(readLong());
}
@Override
public ByteBuf readBytes(int length) {
checkReadableBytes(length);
if (length == 0) {
return Unpooled.EMPTY_BUFFER;
}
ByteBuf buf = alloc().buffer(length, maxCapacity);
buf.writeBytes(this, readerIndex, length);
readerIndex += length;
return buf;
}
@Override
public ByteBuf readSlice(int length) {
checkReadableBytes(length);
ByteBuf slice = slice(readerIndex, length);
readerIndex += length;
return slice;
}
@Override
public ByteBuf readRetainedSlice(int length) {
checkReadableBytes(length);
ByteBuf slice = retainedSlice(readerIndex, length);
readerIndex += length;
return slice;
}
@Override
public ByteBuf readBytes(byte[] dst, int dstIndex, int length) {
checkReadableBytes(length);
getBytes(readerIndex, dst, dstIndex, length);
readerIndex += length;
return this;
}
@Override
public ByteBuf readBytes(byte[] dst) {
readBytes(dst, 0, dst.length);
return this;
}
@Override
public ByteBuf readBytes(ByteBuf dst) {
readBytes(dst, dst.writableBytes());
return this;
}
@Override
public ByteBuf readBytes(ByteBuf dst, int length) {
if (checkBounds) {
if (length > dst.writableBytes()) {
throw new IndexOutOfBoundsException(String.format(
"length(%d) exceeds dst.writableBytes(%d) where dst is: %s", length, dst.writableBytes(), dst));
}
}
readBytes(dst, dst.writerIndex(), length);
dst.writerIndex(dst.writerIndex() + length);
return this;
}
@Override
public ByteBuf readBytes(ByteBuf dst, int dstIndex, int length) {
checkReadableBytes(length);
getBytes(readerIndex, dst, dstIndex, length);
readerIndex += length;
return this;
}
@Override
public ByteBuf readBytes(ByteBuffer dst) {
int length = dst.remaining();
checkReadableBytes(length);
getBytes(readerIndex, dst);
readerIndex += length;
return this;
}
@Override
public int readBytes(GatheringByteChannel out, int length)
throws IOException {
checkReadableBytes(length);
int readBytes = getBytes(readerIndex, out, length);
readerIndex += readBytes;
return readBytes;
}
@Override
public int readBytes(FileChannel out, long position, int length)
throws IOException {
checkReadableBytes(length);
int readBytes = getBytes(readerIndex, out, position, length);
readerIndex += readBytes;
return readBytes;
}
@Override
public ByteBuf readBytes(OutputStream out, int length) throws IOException {
checkReadableBytes(length);
getBytes(readerIndex, out, length);
readerIndex += length;
return this;
}
@Override
public ByteBuf skipBytes(int length) {
checkReadableBytes(length);
readerIndex += length;
return this;
}
@Override
public ByteBuf writeBoolean(boolean value) {
writeByte(value ? 1 : 0);
return this;
}
@Override
public ByteBuf writeByte(int value) {
ensureWritable0(1);
_setByte(writerIndex++, value);
return this;
}
@Override
public ByteBuf writeShort(int value) {
ensureWritable0(2);
_setShort(writerIndex, value);
writerIndex += 2;
return this;
}
@Override
public ByteBuf writeShortLE(int value) {
ensureWritable0(2);
_setShortLE(writerIndex, value);
writerIndex += 2;
return this;
}
@Override
public ByteBuf writeMedium(int value) {
ensureWritable0(3);
_setMedium(writerIndex, value);
writerIndex += 3;
return this;
}
@Override
public ByteBuf writeMediumLE(int value) {
ensureWritable0(3);
_setMediumLE(writerIndex, value);
writerIndex += 3;
return this;
}
@Override
public ByteBuf writeInt(int value) {
ensureWritable0(4);
_setInt(writerIndex, value);
writerIndex += 4;
return this;
}
@Override
public ByteBuf writeIntLE(int value) {
ensureWritable0(4);
_setIntLE(writerIndex, value);
writerIndex += 4;
return this;
}
@Override
public ByteBuf writeLong(long value) {
ensureWritable0(8);
_setLong(writerIndex, value);
writerIndex += 8;
return this;
}
@Override
public ByteBuf writeLongLE(long value) {
ensureWritable0(8);
_setLongLE(writerIndex, value);
writerIndex += 8;
return this;
}
@Override
public ByteBuf writeChar(int value) {
writeShort(value);
return this;
}
@Override
public ByteBuf writeFloat(float value) {
writeInt(Float.floatToRawIntBits(value));
return this;
}
@Override
public ByteBuf writeDouble(double value) {
writeLong(Double.doubleToRawLongBits(value));
return this;
}
@Override
public ByteBuf writeBytes(byte[] src, int srcIndex, int length) {
ensureWritable(length);
setBytes(writerIndex, src, srcIndex, length);
writerIndex += length;
return this;
}
@Override
public ByteBuf writeBytes(byte[] src) {
writeBytes(src, 0, src.length);
return this;
}
@Override
public ByteBuf writeBytes(ByteBuf src) {
writeBytes(src, src.readableBytes());
return this;
}
@Override
public ByteBuf writeBytes(ByteBuf src, int length) {
if (checkBounds) {
checkReadableBounds(src, length);
}
writeBytes(src, src.readerIndex(), length);
src.readerIndex(src.readerIndex() + length);
return this;
}
@Override
public ByteBuf writeBytes(ByteBuf src, int srcIndex, int length) {
ensureWritable(length);
setBytes(writerIndex, src, srcIndex, length);
writerIndex += length;
return this;
}
@Override
public ByteBuf writeBytes(ByteBuffer src) {
int length = src.remaining();
ensureWritable0(length);
setBytes(writerIndex, src);
writerIndex += length;
return this;
}
@Override
public int writeBytes(InputStream in, int length)
throws IOException {
ensureWritable(length);
int writtenBytes = setBytes(writerIndex, in, length);
if (writtenBytes > 0) {
writerIndex += writtenBytes;
}
return writtenBytes;
}
@Override
public int writeBytes(ScatteringByteChannel in, int length) throws IOException {
ensureWritable(length);
int writtenBytes = setBytes(writerIndex, in, length);
if (writtenBytes > 0) {
writerIndex += writtenBytes;
}
return writtenBytes;
}
@Override
public int writeBytes(FileChannel in, long position, int length) throws IOException {
ensureWritable(length);
int writtenBytes = setBytes(writerIndex, in, position, length);
if (writtenBytes > 0) {
writerIndex += writtenBytes;
}
return writtenBytes;
}
@Override
public ByteBuf writeZero(int length) {
if (length == 0) {
return this;
}
ensureWritable(length);
int wIndex = writerIndex;
checkIndex0(wIndex, length);
int nLong = length >>> 3;
int nBytes = length & 7;
for (int i = nLong; i > 0; i --) {
_setLong(wIndex, 0);
wIndex += 8;
}
if (nBytes == 4) {
_setInt(wIndex, 0);
wIndex += 4;
} else if (nBytes < 4) {
for (int i = nBytes; i > 0; i --) {
_setByte(wIndex, (byte) 0);
wIndex++;
}
} else {
_setInt(wIndex, 0);
wIndex += 4;
for (int i = nBytes - 4; i > 0; i --) {
_setByte(wIndex, (byte) 0);
wIndex++;
}
}
writerIndex = wIndex;
return this;
}
@Override
public int writeCharSequence(CharSequence sequence, Charset charset) {
int written = setCharSequence0(writerIndex, sequence, charset, true);
writerIndex += written;
return written;
}
@Override
public ByteBuf copy() {
return copy(readerIndex, readableBytes());
}
@Override
public ByteBuf duplicate() {
ensureAccessible();
return new UnpooledDuplicatedByteBuf(this);
}
@Override
public ByteBuf retainedDuplicate() {
return duplicate().retain();
}
@Override
public ByteBuf slice() {
return slice(readerIndex, readableBytes());
}
@Override
public ByteBuf retainedSlice() {
return slice().retain();
}
@Override
public ByteBuf slice(int index, int length) {
ensureAccessible();
return new UnpooledSlicedByteBuf(this, index, length);
}
@Override
public ByteBuf retainedSlice(int index, int length) {
return slice(index, length).retain();
}
@Override
public ByteBuffer nioBuffer() {
return nioBuffer(readerIndex, readableBytes());
}
@Override
public ByteBuffer[] nioBuffers() {
return nioBuffers(readerIndex, readableBytes());
}
@Override
public String toString(Charset charset) {
return toString(readerIndex, readableBytes(), charset);
}
@Override
public String toString(int index, int length, Charset charset) {
return ByteBufUtil.decodeString(this, index, length, charset);
}
@Override
public int indexOf(int fromIndex, int toIndex, byte value) {
if (fromIndex <= toIndex) {
return ByteBufUtil.firstIndexOf(this, fromIndex, toIndex, value);
}
return ByteBufUtil.lastIndexOf(this, fromIndex, toIndex, value);
}
@Override
public int bytesBefore(byte value) {
return bytesBefore(readerIndex(), readableBytes(), value);
}
@Override
public int bytesBefore(int length, byte value) {
checkReadableBytes(length);
return bytesBefore(readerIndex(), length, value);
}
@Override
public int bytesBefore(int index, int length, byte value) {
int endIndex = indexOf(index, index + length, value);
if (endIndex < 0) {
return -1;
}
return endIndex - index;
}
@Override
public int forEachByte(ByteProcessor processor) {
ensureAccessible();
try {
return forEachByteAsc0(readerIndex, writerIndex, processor);
} catch (Exception e) {
PlatformDependent.throwException(e);
return -1;
}
}
@Override
public int forEachByte(int index, int length, ByteProcessor processor) {
checkIndex(index, length);
try {
return forEachByteAsc0(index, index + length, processor);
} catch (Exception e) {
PlatformDependent.throwException(e);
return -1;
}
}
int forEachByteAsc0(int start, int end, ByteProcessor processor) throws Exception {
for (; start < end; ++start) {
if (!processor.process(_getByte(start))) {
return start;
}
}
return -1;
}
@Override
public int forEachByteDesc(ByteProcessor processor) {
ensureAccessible();
try {
return forEachByteDesc0(writerIndex - 1, readerIndex, processor);
} catch (Exception e) {
PlatformDependent.throwException(e);
return -1;
}
}
@Override
public int forEachByteDesc(int index, int length, ByteProcessor processor) {
checkIndex(index, length);
try {
return forEachByteDesc0(index + length - 1, index, processor);
} catch (Exception e) {
PlatformDependent.throwException(e);
return -1;
}
}
int forEachByteDesc0(int rStart, final int rEnd, ByteProcessor processor) throws Exception {
for (; rStart >= rEnd; --rStart) {
if (!processor.process(_getByte(rStart))) {
return rStart;
}
}
return -1;
}
@Override
public int hashCode() {
return ByteBufUtil.hashCode(this);
}
@Override
public boolean equals(Object o) {
return o instanceof ByteBuf && ByteBufUtil.equals(this, (ByteBuf) o);
}
@Override
public int compareTo(ByteBuf that) {
return ByteBufUtil.compare(this, that);
}
@Override
public String toString() {
if (refCnt() == 0) {
return StringUtil.simpleClassName(this) + "(freed)";
}
StringBuilder buf = new StringBuilder()
.append(StringUtil.simpleClassName(this))
.append("(ridx: ").append(readerIndex)
.append(", widx: ").append(writerIndex)
.append(", cap: ").append(capacity());
if (maxCapacity != Integer.MAX_VALUE) {
buf.append('/').append(maxCapacity);
}
ByteBuf unwrapped = unwrap();
if (unwrapped != null) {
buf.append(", unwrapped: ").append(unwrapped);
}
buf.append(')');
return buf.toString();
}
protected final void checkIndex(int index) {
checkIndex(index, 1);
}
protected final void checkIndex(int index, int fieldLength) {
ensureAccessible();
checkIndex0(index, fieldLength);
}
private static void checkRangeBounds(final String indexName, final int index,
final int fieldLength, final int capacity) {
if (isOutOfBounds(index, fieldLength, capacity)) {
throw new IndexOutOfBoundsException(String.format(
"%s: %d, length: %d (expected: range(0, %d))", indexName, index, fieldLength, capacity));
}
}
final void checkIndex0(int index, int fieldLength) {
if (checkBounds) {
checkRangeBounds("index", index, fieldLength, capacity());
}
}
protected final void checkSrcIndex(int index, int length, int srcIndex, int srcCapacity) {
checkIndex(index, length);
if (checkBounds) {
checkRangeBounds("srcIndex", srcIndex, length, srcCapacity);
}
}
protected final void checkDstIndex(int index, int length, int dstIndex, int dstCapacity) {
checkIndex(index, length);
if (checkBounds) {
checkRangeBounds("dstIndex", dstIndex, length, dstCapacity);
}
}
protected final void checkDstIndex(int length, int dstIndex, int dstCapacity) {
checkReadableBytes(length);
if (checkBounds) {
checkRangeBounds("dstIndex", dstIndex, length, dstCapacity);
}
}
/**
* Throws an {@link IndexOutOfBoundsException} if the current
* {@linkplain #readableBytes() readable bytes} of this buffer is less
* than the specified value.
*/
protected final void checkReadableBytes(int minimumReadableBytes) {
checkReadableBytes0(checkPositiveOrZero(minimumReadableBytes, "minimumReadableBytes"));
}
protected final void checkNewCapacity(int newCapacity) {
ensureAccessible();
if (checkBounds && (newCapacity < 0 || newCapacity > maxCapacity())) {
throw new IllegalArgumentException("newCapacity: " + newCapacity +
" (expected: 0-" + maxCapacity() + ')');
}
}
private void checkReadableBytes0(int minimumReadableBytes) {
ensureAccessible();
if (checkBounds && readerIndex > writerIndex - minimumReadableBytes) {
throw new IndexOutOfBoundsException(String.format(
"readerIndex(%d) + length(%d) exceeds writerIndex(%d): %s",
readerIndex, minimumReadableBytes, writerIndex, this));
}
}
/**
* Should be called by every method that tries to access the buffers content to check
* if the buffer was released before.
*/
protected final void ensureAccessible() {
if (checkAccessible && !isAccessible()) {
throw new IllegalReferenceCountException(0);
}
}
final void setIndex0(int readerIndex, int writerIndex) {
this.readerIndex = readerIndex;
this.writerIndex = writerIndex;
}
final void discardMarks() {
markedReaderIndex = markedWriterIndex = 0;
}
}
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