147 lines
5.3 KiB
Java
147 lines
5.3 KiB
Java
/*
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* Copyright 2015 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.net5.buffer;
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/**
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* Utility class for heap buffers.
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*/
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final class HeapByteBufUtil {
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static byte getByte(byte[] memory, int index) {
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return memory[index];
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}
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static short getShort(byte[] memory, int index) {
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return (short) (memory[index] << 8 | memory[index + 1] & 0xFF);
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}
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static short getShortLE(byte[] memory, int index) {
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return (short) (memory[index] & 0xff | memory[index + 1] << 8);
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}
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static int getUnsignedMedium(byte[] memory, int index) {
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return (memory[index] & 0xff) << 16 |
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(memory[index + 1] & 0xff) << 8 |
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memory[index + 2] & 0xff;
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}
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static int getUnsignedMediumLE(byte[] memory, int index) {
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return memory[index] & 0xff |
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(memory[index + 1] & 0xff) << 8 |
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(memory[index + 2] & 0xff) << 16;
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}
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static int getInt(byte[] memory, int index) {
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return (memory[index] & 0xff) << 24 |
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(memory[index + 1] & 0xff) << 16 |
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(memory[index + 2] & 0xff) << 8 |
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memory[index + 3] & 0xff;
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}
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static int getIntLE(byte[] memory, int index) {
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return memory[index] & 0xff |
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(memory[index + 1] & 0xff) << 8 |
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(memory[index + 2] & 0xff) << 16 |
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(memory[index + 3] & 0xff) << 24;
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}
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static long getLong(byte[] memory, int index) {
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return ((long) memory[index] & 0xff) << 56 |
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((long) memory[index + 1] & 0xff) << 48 |
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((long) memory[index + 2] & 0xff) << 40 |
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((long) memory[index + 3] & 0xff) << 32 |
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((long) memory[index + 4] & 0xff) << 24 |
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((long) memory[index + 5] & 0xff) << 16 |
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((long) memory[index + 6] & 0xff) << 8 |
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(long) memory[index + 7] & 0xff;
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}
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static long getLongLE(byte[] memory, int index) {
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return (long) memory[index] & 0xff |
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((long) memory[index + 1] & 0xff) << 8 |
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((long) memory[index + 2] & 0xff) << 16 |
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((long) memory[index + 3] & 0xff) << 24 |
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((long) memory[index + 4] & 0xff) << 32 |
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((long) memory[index + 5] & 0xff) << 40 |
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((long) memory[index + 6] & 0xff) << 48 |
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((long) memory[index + 7] & 0xff) << 56;
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}
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static void setByte(byte[] memory, int index, int value) {
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memory[index] = (byte) value;
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}
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static void setShort(byte[] memory, int index, int value) {
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memory[index] = (byte) (value >>> 8);
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memory[index + 1] = (byte) value;
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}
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static void setShortLE(byte[] memory, int index, int value) {
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memory[index] = (byte) value;
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memory[index + 1] = (byte) (value >>> 8);
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}
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static void setMedium(byte[] memory, int index, int value) {
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memory[index] = (byte) (value >>> 16);
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memory[index + 1] = (byte) (value >>> 8);
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memory[index + 2] = (byte) value;
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}
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static void setMediumLE(byte[] memory, int index, int value) {
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memory[index] = (byte) value;
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memory[index + 1] = (byte) (value >>> 8);
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memory[index + 2] = (byte) (value >>> 16);
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}
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static void setInt(byte[] memory, int index, int value) {
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memory[index] = (byte) (value >>> 24);
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memory[index + 1] = (byte) (value >>> 16);
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memory[index + 2] = (byte) (value >>> 8);
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memory[index + 3] = (byte) value;
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}
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static void setIntLE(byte[] memory, int index, int value) {
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memory[index] = (byte) value;
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memory[index + 1] = (byte) (value >>> 8);
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memory[index + 2] = (byte) (value >>> 16);
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memory[index + 3] = (byte) (value >>> 24);
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}
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static void setLong(byte[] memory, int index, long value) {
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memory[index] = (byte) (value >>> 56);
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memory[index + 1] = (byte) (value >>> 48);
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memory[index + 2] = (byte) (value >>> 40);
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memory[index + 3] = (byte) (value >>> 32);
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memory[index + 4] = (byte) (value >>> 24);
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memory[index + 5] = (byte) (value >>> 16);
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memory[index + 6] = (byte) (value >>> 8);
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memory[index + 7] = (byte) value;
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}
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static void setLongLE(byte[] memory, int index, long value) {
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memory[index] = (byte) value;
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memory[index + 1] = (byte) (value >>> 8);
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memory[index + 2] = (byte) (value >>> 16);
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memory[index + 3] = (byte) (value >>> 24);
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memory[index + 4] = (byte) (value >>> 32);
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memory[index + 5] = (byte) (value >>> 40);
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memory[index + 6] = (byte) (value >>> 48);
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memory[index + 7] = (byte) (value >>> 56);
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}
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private HeapByteBufUtil() { }
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}
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