// 
// Decompiled by Procyon v0.6.0
// 

package io.netty.buffer;

import java.nio.channels.ClosedChannelException;
import java.nio.channels.ScatteringByteChannel;
import java.io.InputStream;
import java.nio.channels.FileChannel;
import java.nio.channels.GatheringByteChannel;
import java.io.IOException;
import java.io.OutputStream;
import io.netty.util.internal.PlatformDependent;
import java.nio.ByteOrder;
import io.netty.util.internal.ObjectUtil;
import java.nio.ByteBuffer;
import io.netty.util.internal.CleanableDirectBuffer;

public class UnpooledDirectByteBuf extends AbstractReferenceCountedByteBuf
{
    private final ByteBufAllocator alloc;
    CleanableDirectBuffer cleanable;
    ByteBuffer buffer;
    private ByteBuffer tmpNioBuf;
    private int capacity;
    private boolean doNotFree;
    private final boolean allowSectionedInternalNioBufferAccess;
    
    public UnpooledDirectByteBuf(final ByteBufAllocator alloc, final int initialCapacity, final int maxCapacity) {
        this(alloc, initialCapacity, maxCapacity, true);
    }
    
    UnpooledDirectByteBuf(final ByteBufAllocator alloc, final int initialCapacity, final int maxCapacity, final boolean allowSectionedInternalNioBufferAccess) {
        super(maxCapacity);
        ObjectUtil.checkNotNull(alloc, "alloc");
        ObjectUtil.checkPositiveOrZero(initialCapacity, "initialCapacity");
        ObjectUtil.checkPositiveOrZero(maxCapacity, "maxCapacity");
        if (initialCapacity > maxCapacity) {
            throw new IllegalArgumentException(String.format("initialCapacity(%d) > maxCapacity(%d)", initialCapacity, maxCapacity));
        }
        this.alloc = alloc;
        this.setByteBuffer(this.allocateDirectBuffer(initialCapacity), false);
        this.allowSectionedInternalNioBufferAccess = allowSectionedInternalNioBufferAccess;
    }
    
    protected UnpooledDirectByteBuf(final ByteBufAllocator alloc, final ByteBuffer initialBuffer, final int maxCapacity) {
        this(alloc, initialBuffer, maxCapacity, false, true);
    }
    
    UnpooledDirectByteBuf(final ByteBufAllocator alloc, final ByteBuffer initialBuffer, final int maxCapacity, final boolean doFree, final boolean slice) {
        super(maxCapacity);
        ObjectUtil.checkNotNull(alloc, "alloc");
        ObjectUtil.checkNotNull(initialBuffer, "initialBuffer");
        if (!initialBuffer.isDirect()) {
            throw new IllegalArgumentException("initialBuffer is not a direct buffer.");
        }
        if (initialBuffer.isReadOnly()) {
            throw new IllegalArgumentException("initialBuffer is a read-only buffer.");
        }
        final int initialCapacity = initialBuffer.remaining();
        if (initialCapacity > maxCapacity) {
            throw new IllegalArgumentException(String.format("initialCapacity(%d) > maxCapacity(%d)", initialCapacity, maxCapacity));
        }
        this.alloc = alloc;
        this.doNotFree = !doFree;
        this.setByteBuffer((slice ? initialBuffer.slice() : initialBuffer).order(ByteOrder.BIG_ENDIAN), false);
        this.writerIndex(initialCapacity);
        this.allowSectionedInternalNioBufferAccess = true;
    }
    
    @Deprecated
    protected ByteBuffer allocateDirect(final int initialCapacity) {
        return ByteBuffer.allocateDirect(initialCapacity);
    }
    
    @Deprecated
    protected void freeDirect(final ByteBuffer buffer) {
        PlatformDependent.freeDirectBuffer(buffer);
    }
    
    protected CleanableDirectBuffer allocateDirectBuffer(final int capacity) {
        return PlatformDependent.allocateDirect(capacity);
    }
    
    void setByteBuffer(final CleanableDirectBuffer cleanableDirectBuffer, final boolean tryFree) {
        if (tryFree) {
            final CleanableDirectBuffer oldCleanable = this.cleanable;
            final ByteBuffer oldBuffer = this.buffer;
            if (oldBuffer != null) {
                if (this.doNotFree) {
                    this.doNotFree = false;
                }
                else if (oldCleanable != null) {
                    oldCleanable.clean();
                }
                else {
                    this.freeDirect(oldBuffer);
                }
            }
        }
        this.cleanable = cleanableDirectBuffer;
        this.buffer = cleanableDirectBuffer.buffer();
        this.tmpNioBuf = null;
        this.capacity = this.buffer.remaining();
    }
    
    void setByteBuffer(final ByteBuffer buffer, final boolean tryFree) {
        if (tryFree) {
            final ByteBuffer oldBuffer = this.buffer;
            if (oldBuffer != null) {
                if (this.doNotFree) {
                    this.doNotFree = false;
                }
                else {
                    this.freeDirect(oldBuffer);
                }
            }
        }
        this.buffer = buffer;
        this.tmpNioBuf = null;
        this.capacity = buffer.remaining();
    }
    
    @Override
    public boolean isDirect() {
        return true;
    }
    
    @Override
    public int capacity() {
        return this.capacity;
    }
    
    @Override
    public ByteBuf capacity(final int newCapacity) {
        this.checkNewCapacity(newCapacity);
        final int oldCapacity = this.capacity;
        if (newCapacity == oldCapacity) {
            return this;
        }
        int bytesToCopy;
        if (newCapacity > oldCapacity) {
            bytesToCopy = oldCapacity;
        }
        else {
            this.trimIndicesToCapacity(newCapacity);
            bytesToCopy = newCapacity;
        }
        final ByteBuffer oldBuffer = this.buffer;
        final CleanableDirectBuffer newBuffer = this.allocateDirectBuffer(newCapacity);
        oldBuffer.position().limit(bytesToCopy);
        newBuffer.buffer().position().limit(bytesToCopy);
        newBuffer.buffer().put(oldBuffer).clear();
        this.setByteBuffer(newBuffer, true);
        return this;
    }
    
    @Override
    public ByteBufAllocator alloc() {
        return this.alloc;
    }
    
    @Override
    public ByteOrder order() {
        return ByteOrder.BIG_ENDIAN;
    }
    
    @Override
    public boolean hasArray() {
        return false;
    }
    
    @Override
    public byte[] array() {
        throw new UnsupportedOperationException("direct buffer");
    }
    
    @Override
    public int arrayOffset() {
        throw new UnsupportedOperationException("direct buffer");
    }
    
    @Override
    public boolean hasMemoryAddress() {
        final CleanableDirectBuffer cleanable = this.cleanable;
        return cleanable != null && cleanable.hasMemoryAddress();
    }
    
    @Override
    public long memoryAddress() {
        this.ensureAccessible();
        if (!this.hasMemoryAddress()) {
            throw new UnsupportedOperationException();
        }
        return this.cleanable.memoryAddress();
    }
    
    @Override
    public byte getByte(final int index) {
        this.ensureAccessible();
        return this._getByte(index);
    }
    
    @Override
    protected byte _getByte(final int index) {
        return this.buffer.get(index);
    }
    
    @Override
    public short getShortLE(final int index) {
        this.ensureAccessible();
        return this._getShortLE(index);
    }
    
    @Override
    public short getShort(final int index) {
        this.ensureAccessible();
        return this._getShort(index);
    }
    
    @Override
    protected short _getShort(final int index) {
        if (PlatformDependent.hasVarHandle()) {
            return VarHandleByteBufferAccess.getShortBE(this.buffer, index);
        }
        return this.buffer.getShort(index);
    }
    
    @Override
    protected short _getShortLE(final int index) {
        if (PlatformDependent.hasVarHandle()) {
            return VarHandleByteBufferAccess.getShortLE(this.buffer, index);
        }
        return ByteBufUtil.swapShort(this.buffer.getShort(index));
    }
    
    @Override
    public int getUnsignedMedium(final int index) {
        this.ensureAccessible();
        return this._getUnsignedMedium(index);
    }
    
    @Override
    protected int _getUnsignedMedium(final int index) {
        return (this.getByte(index) & 0xFF) << 16 | (this.getByte(index + 1) & 0xFF) << 8 | (this.getByte(index + 2) & 0xFF);
    }
    
    @Override
    protected int _getUnsignedMediumLE(final int index) {
        return (this.getByte(index) & 0xFF) | (this.getByte(index + 1) & 0xFF) << 8 | (this.getByte(index + 2) & 0xFF) << 16;
    }
    
    @Override
    public int getIntLE(final int index) {
        this.ensureAccessible();
        return this._getIntLE(index);
    }
    
    @Override
    public int getInt(final int index) {
        this.ensureAccessible();
        return this._getInt(index);
    }
    
    @Override
    protected int _getInt(final int index) {
        if (PlatformDependent.hasVarHandle()) {
            return VarHandleByteBufferAccess.getIntBE(this.buffer, index);
        }
        return this.buffer.getInt(index);
    }
    
    @Override
    protected int _getIntLE(final int index) {
        if (PlatformDependent.hasVarHandle()) {
            return VarHandleByteBufferAccess.getIntLE(this.buffer, index);
        }
        return ByteBufUtil.swapInt(this.buffer.getInt(index));
    }
    
    @Override
    public long getLongLE(final int index) {
        this.ensureAccessible();
        return this._getLongLE(index);
    }
    
    @Override
    public long getLong(final int index) {
        this.ensureAccessible();
        return this._getLong(index);
    }
    
    @Override
    protected long _getLong(final int index) {
        if (PlatformDependent.hasVarHandle()) {
            return VarHandleByteBufferAccess.getLongBE(this.buffer, index);
        }
        return this.buffer.getLong(index);
    }
    
    @Override
    protected long _getLongLE(final int index) {
        if (PlatformDependent.hasVarHandle()) {
            return VarHandleByteBufferAccess.getLongLE(this.buffer, index);
        }
        return ByteBufUtil.swapLong(this.buffer.getLong(index));
    }
    
    @Override
    public ByteBuf getBytes(int index, final ByteBuf dst, final int dstIndex, final int length) {
        this.checkDstIndex(index, length, dstIndex, dst.capacity());
        if (dst.hasArray()) {
            this.getBytes(index, dst.array(), dst.arrayOffset() + dstIndex, length);
        }
        else if (dst.nioBufferCount() > 0) {
            for (final ByteBuffer bb : dst.nioBuffers(dstIndex, length)) {
                final int bbLen = bb.remaining();
                this.getBytes(index, bb);
                index += bbLen;
            }
        }
        else {
            dst.setBytes(dstIndex, this, index, length);
        }
        return this;
    }
    
    @Override
    public ByteBuf getBytes(final int index, final byte[] dst, final int dstIndex, final int length) {
        this.getBytes(index, dst, dstIndex, length, false);
        return this;
    }
    
    void getBytes(final int index, final byte[] dst, final int dstIndex, final int length, final boolean internal) {
        this.checkDstIndex(index, length, dstIndex, dst.length);
        ByteBuffer tmpBuf;
        if (internal) {
            tmpBuf = this.internalNioBuffer(index, length);
        }
        else {
            tmpBuf = (ByteBuffer)this.buffer.duplicate().clear().position(index).limit(index + length);
        }
        tmpBuf.get(dst, dstIndex, length);
    }
    
    @Override
    public ByteBuf readBytes(final byte[] dst, final int dstIndex, final int length) {
        this.checkReadableBytes(length);
        this.getBytes(this.readerIndex, dst, dstIndex, length, true);
        this.readerIndex += length;
        return this;
    }
    
    @Override
    public ByteBuf getBytes(final int index, final ByteBuffer dst) {
        this.getBytes(index, dst, false);
        return this;
    }
    
    void getBytes(final int index, final ByteBuffer dst, final boolean internal) {
        this.checkIndex(index, dst.remaining());
        ByteBuffer tmpBuf;
        if (internal) {
            tmpBuf = this.internalNioBuffer(index, dst.remaining());
        }
        else {
            tmpBuf = (ByteBuffer)this.buffer.duplicate().clear().position(index).limit(index + dst.remaining());
        }
        dst.put(tmpBuf);
    }
    
    @Override
    public ByteBuf readBytes(final ByteBuffer dst) {
        final int length = dst.remaining();
        this.checkReadableBytes(length);
        this.getBytes(this.readerIndex, dst, true);
        this.readerIndex += length;
        return this;
    }
    
    @Override
    public ByteBuf setByte(final int index, final int value) {
        this.ensureAccessible();
        this._setByte(index, value);
        return this;
    }
    
    @Override
    protected void _setByte(final int index, final int value) {
        this.buffer.put(index, (byte)(value & 0xFF));
    }
    
    @Override
    public ByteBuf setShortLE(final int index, final int value) {
        this.ensureAccessible();
        this._setShortLE(index, value);
        return this;
    }
    
    @Override
    public ByteBuf setShort(final int index, final int value) {
        this.ensureAccessible();
        this._setShort(index, value);
        return this;
    }
    
    @Override
    protected void _setShort(final int index, final int value) {
        if (PlatformDependent.hasVarHandle()) {
            VarHandleByteBufferAccess.setShortBE(this.buffer, index, value);
            return;
        }
        this.buffer.putShort(index, (short)(value & 0xFFFF));
    }
    
    @Override
    protected void _setShortLE(final int index, final int value) {
        if (PlatformDependent.hasVarHandle()) {
            VarHandleByteBufferAccess.setShortLE(this.buffer, index, value);
            return;
        }
        this.buffer.putShort(index, ByteBufUtil.swapShort((short)value));
    }
    
    @Override
    public ByteBuf setMediumLE(final int index, final int value) {
        this.ensureAccessible();
        this._setMediumLE(index, value);
        return this;
    }
    
    @Override
    public ByteBuf setMedium(final int index, final int value) {
        this.ensureAccessible();
        this._setMedium(index, value);
        return this;
    }
    
    @Override
    protected void _setMedium(final int index, final int value) {
        this.setByte(index, (byte)(value >>> 16));
        this.setByte(index + 1, (byte)(value >>> 8));
        this.setByte(index + 2, (byte)value);
    }
    
    @Override
    protected void _setMediumLE(final int index, final int value) {
        this.setByte(index, (byte)value);
        this.setByte(index + 1, (byte)(value >>> 8));
        this.setByte(index + 2, (byte)(value >>> 16));
    }
    
    @Override
    public ByteBuf setIntLE(final int index, final int value) {
        this.ensureAccessible();
        this._setIntLE(index, value);
        return this;
    }
    
    @Override
    public ByteBuf setInt(final int index, final int value) {
        this.ensureAccessible();
        this._setInt(index, value);
        return this;
    }
    
    @Override
    protected void _setInt(final int index, final int value) {
        if (PlatformDependent.hasVarHandle()) {
            VarHandleByteBufferAccess.setIntBE(this.buffer, index, value);
            return;
        }
        this.buffer.putInt(index, value);
    }
    
    @Override
    protected void _setIntLE(final int index, final int value) {
        if (PlatformDependent.hasVarHandle()) {
            VarHandleByteBufferAccess.setIntLE(this.buffer, index, value);
            return;
        }
        this.buffer.putInt(index, ByteBufUtil.swapInt(value));
    }
    
    @Override
    public ByteBuf setLong(final int index, final long value) {
        this.ensureAccessible();
        this._setLong(index, value);
        return this;
    }
    
    @Override
    public ByteBuf setLongLE(final int index, final long value) {
        this.ensureAccessible();
        this._setLongLE(index, value);
        return this;
    }
    
    @Override
    protected void _setLong(final int index, final long value) {
        if (PlatformDependent.hasVarHandle()) {
            VarHandleByteBufferAccess.setLongBE(this.buffer, index, value);
            return;
        }
        this.buffer.putLong(index, value);
    }
    
    @Override
    protected void _setLongLE(final int index, final long value) {
        if (PlatformDependent.hasVarHandle()) {
            VarHandleByteBufferAccess.setLongLE(this.buffer, index, value);
            return;
        }
        this.buffer.putLong(index, ByteBufUtil.swapLong(value));
    }
    
    @Override
    public ByteBuf setBytes(int index, final ByteBuf src, final int srcIndex, final int length) {
        this.checkSrcIndex(index, length, srcIndex, src.capacity());
        if (src.nioBufferCount() > 0) {
            for (final ByteBuffer bb : src.nioBuffers(srcIndex, length)) {
                final int bbLen = bb.remaining();
                this.setBytes(index, bb);
                index += bbLen;
            }
        }
        else {
            src.getBytes(srcIndex, this, index, length);
        }
        return this;
    }
    
    @Override
    public ByteBuf setBytes(final int index, final byte[] src, final int srcIndex, final int length) {
        this.checkSrcIndex(index, length, srcIndex, src.length);
        final ByteBuffer tmpBuf = this.internalNioBuffer(index, length);
        tmpBuf.put(src, srcIndex, length);
        return this;
    }
    
    @Override
    public ByteBuf setBytes(final int index, ByteBuffer src) {
        this.ensureAccessible();
        if (src == this.tmpNioBuf) {
            src = src.duplicate();
        }
        final ByteBuffer tmpBuf = this.internalNioBuffer(index, src.remaining());
        tmpBuf.put(src);
        return this;
    }
    
    @Override
    public ByteBuf getBytes(final int index, final OutputStream out, final int length) throws IOException {
        this.getBytes(index, out, length, false);
        return this;
    }
    
    void getBytes(final int index, final OutputStream out, final int length, final boolean internal) throws IOException {
        this.ensureAccessible();
        if (length == 0) {
            return;
        }
        ByteBufUtil.readBytes(this.alloc(), internal ? this.internalNioBuffer() : this.buffer.duplicate(), index, length, out);
    }
    
    @Override
    public ByteBuf readBytes(final OutputStream out, final int length) throws IOException {
        this.checkReadableBytes(length);
        this.getBytes(this.readerIndex, out, length, true);
        this.readerIndex += length;
        return this;
    }
    
    @Override
    public int getBytes(final int index, final GatheringByteChannel out, final int length) throws IOException {
        return this.getBytes(index, out, length, false);
    }
    
    private int getBytes(final int index, final GatheringByteChannel out, final int length, final boolean internal) throws IOException {
        this.ensureAccessible();
        if (length == 0) {
            return 0;
        }
        ByteBuffer tmpBuf;
        if (internal) {
            tmpBuf = this.internalNioBuffer(index, length);
        }
        else {
            tmpBuf = (ByteBuffer)this.buffer.duplicate().clear().position(index).limit(index + length);
        }
        return out.write(tmpBuf);
    }
    
    @Override
    public int getBytes(final int index, final FileChannel out, final long position, final int length) throws IOException {
        return this.getBytes(index, out, position, length, false);
    }
    
    private int getBytes(final int index, final FileChannel out, final long position, final int length, final boolean internal) throws IOException {
        this.ensureAccessible();
        if (length == 0) {
            return 0;
        }
        final ByteBuffer tmpBuf = (ByteBuffer)(internal ? this.internalNioBuffer(index, length) : this.buffer.duplicate().clear().position(index).limit(index + length));
        return out.write(tmpBuf, position);
    }
    
    @Override
    public int readBytes(final GatheringByteChannel out, final int length) throws IOException {
        this.checkReadableBytes(length);
        final int readBytes = this.getBytes(this.readerIndex, out, length, true);
        this.readerIndex += readBytes;
        return readBytes;
    }
    
    @Override
    public int readBytes(final FileChannel out, final long position, final int length) throws IOException {
        this.checkReadableBytes(length);
        final int readBytes = this.getBytes(this.readerIndex, out, position, length, true);
        this.readerIndex += readBytes;
        return readBytes;
    }
    
    @Override
    public int setBytes(final int index, final InputStream in, final int length) throws IOException {
        this.ensureAccessible();
        if (this.buffer.hasArray()) {
            return in.read(this.buffer.array(), this.buffer.arrayOffset() + index, length);
        }
        final byte[] tmp = ByteBufUtil.threadLocalTempArray(length);
        final int readBytes = in.read(tmp, 0, length);
        if (readBytes <= 0) {
            return readBytes;
        }
        final ByteBuffer tmpBuf = this.internalNioBuffer(index, readBytes);
        tmpBuf.put(tmp, 0, readBytes);
        return readBytes;
    }
    
    @Override
    public int setBytes(final int index, final ScatteringByteChannel in, final int length) throws IOException {
        this.ensureAccessible();
        final ByteBuffer tmpBuf = this.internalNioBuffer(index, length);
        try {
            return in.read(tmpBuf);
        }
        catch (final ClosedChannelException ignored) {
            return -1;
        }
    }
    
    @Override
    public int setBytes(final int index, final FileChannel in, final long position, final int length) throws IOException {
        this.ensureAccessible();
        final ByteBuffer tmpBuf = this.internalNioBuffer(index, length);
        try {
            return in.read(tmpBuf, position);
        }
        catch (final ClosedChannelException ignored) {
            return -1;
        }
    }
    
    @Override
    public int nioBufferCount() {
        return 1;
    }
    
    @Override
    public ByteBuffer[] nioBuffers(final int index, final int length) {
        return new ByteBuffer[] { this.nioBuffer(index, length) };
    }
    
    @Override
    public final boolean isContiguous() {
        return true;
    }
    
    @Override
    public ByteBuf copy(final int index, final int length) {
        this.ensureAccessible();
        ByteBuffer src;
        try {
            src = (ByteBuffer)this.buffer.duplicate().clear().position(index).limit(index + length);
        }
        catch (final IllegalArgumentException ignored) {
            throw new IndexOutOfBoundsException("Too many bytes to read - Need " + (index + length));
        }
        return this.alloc().directBuffer(length, this.maxCapacity()).writeBytes(src);
    }
    
    @Override
    public ByteBuffer internalNioBuffer(final int index, final int length) {
        this.checkIndex(index, length);
        if (!this.allowSectionedInternalNioBufferAccess) {
            throw new UnsupportedOperationException("Bug: unsafe access to shared internal chunk buffer");
        }
        return (ByteBuffer)this.internalNioBuffer().clear().position(index).limit(index + length);
    }
    
    private ByteBuffer internalNioBuffer() {
        ByteBuffer tmpNioBuf = this.tmpNioBuf;
        if (tmpNioBuf == null) {
            tmpNioBuf = (this.tmpNioBuf = this.buffer.duplicate());
        }
        return tmpNioBuf;
    }
    
    @Override
    public ByteBuffer nioBuffer(final int index, final int length) {
        this.checkIndex(index, length);
        return PlatformDependent.offsetSlice(this.buffer, index, length);
    }
    
    @Override
    protected void deallocate() {
        final ByteBuffer buffer = this.buffer;
        if (buffer == null) {
            return;
        }
        this.buffer = null;
        if (!this.doNotFree) {
            if (this.cleanable != null) {
                this.cleanable.clean();
                this.cleanable = null;
            }
            else {
                this.freeDirect(buffer);
            }
        }
    }
    
    @Override
    public ByteBuf unwrap() {
        return null;
    }
}