| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 |
| * |
| * http://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 org.apache.directmemory.lightning.internal.io; |
| |
| import java.io.IOException; |
| |
| import org.apache.directmemory.lightning.Source; |
| import org.apache.directmemory.lightning.Target; |
| |
| public class ByteOrderUtils |
| { |
| |
| public static void putShort( short value, Target target, boolean bigEndian ) |
| throws IOException |
| { |
| if ( bigEndian ) |
| { |
| target.writeByte( (byte) ( value >> 8 ) ); |
| target.writeByte( (byte) ( value >> 0 ) ); |
| } |
| else |
| { |
| target.writeByte( (byte) ( value >> 0 ) ); |
| target.writeByte( (byte) ( value >> 8 ) ); |
| } |
| } |
| |
| public static short getShort( Source source, boolean bigEndian ) |
| throws IOException |
| { |
| if ( bigEndian ) |
| { |
| byte b1 = source.readByte(); |
| byte b0 = source.readByte(); |
| return buildShort( b1, b0 ); |
| } |
| else |
| { |
| byte b0 = source.readByte(); |
| byte b1 = source.readByte(); |
| return buildShort( b1, b0 ); |
| } |
| } |
| |
| public static void putInt( int value, Target target, boolean bigEndian ) |
| throws IOException |
| { |
| if ( bigEndian ) |
| { |
| target.writeByte( (byte) ( value >>> 24 ) ); |
| target.writeByte( (byte) ( value >>> 16 ) ); |
| target.writeByte( (byte) ( value >>> 8 ) ); |
| target.writeByte( (byte) ( value >>> 0 ) ); |
| } |
| else |
| { |
| target.writeByte( (byte) ( value >>> 0 ) ); |
| target.writeByte( (byte) ( value >>> 8 ) ); |
| target.writeByte( (byte) ( value >>> 16 ) ); |
| target.writeByte( (byte) ( value >>> 24 ) ); |
| } |
| } |
| |
| public static int getInt( Source source, boolean bigEndian ) |
| throws IOException |
| { |
| if ( bigEndian ) |
| { |
| byte b3 = source.readByte(); |
| byte b2 = source.readByte(); |
| byte b1 = source.readByte(); |
| byte b0 = source.readByte(); |
| return buildInt( b3, b2, b1, b0 ); |
| } |
| else |
| { |
| byte b0 = source.readByte(); |
| byte b1 = source.readByte(); |
| byte b2 = source.readByte(); |
| byte b3 = source.readByte(); |
| return buildInt( b3, b2, b1, b0 ); |
| } |
| } |
| |
| public static void putLong( long value, Target target, boolean bigEndian ) |
| throws IOException |
| { |
| if ( bigEndian ) |
| { |
| target.writeByte( (byte) ( value >> 56 ) ); |
| target.writeByte( (byte) ( value >> 48 ) ); |
| target.writeByte( (byte) ( value >> 40 ) ); |
| target.writeByte( (byte) ( value >> 32 ) ); |
| target.writeByte( (byte) ( value >> 24 ) ); |
| target.writeByte( (byte) ( value >> 16 ) ); |
| target.writeByte( (byte) ( value >> 8 ) ); |
| target.writeByte( (byte) ( value >> 0 ) ); |
| } |
| else |
| { |
| target.writeByte( (byte) ( value >> 0 ) ); |
| target.writeByte( (byte) ( value >> 8 ) ); |
| target.writeByte( (byte) ( value >> 16 ) ); |
| target.writeByte( (byte) ( value >> 24 ) ); |
| target.writeByte( (byte) ( value >> 32 ) ); |
| target.writeByte( (byte) ( value >> 40 ) ); |
| target.writeByte( (byte) ( value >> 48 ) ); |
| target.writeByte( (byte) ( value >> 56 ) ); |
| } |
| } |
| |
| public static long getLong( Source source, boolean bigEndian ) |
| throws IOException |
| { |
| if ( bigEndian ) |
| { |
| byte b7 = source.readByte(); |
| byte b6 = source.readByte(); |
| byte b5 = source.readByte(); |
| byte b4 = source.readByte(); |
| byte b3 = source.readByte(); |
| byte b2 = source.readByte(); |
| byte b1 = source.readByte(); |
| byte b0 = source.readByte(); |
| return buildLong( b7, b6, b5, b4, b3, b2, b1, b0 ); |
| } |
| else |
| { |
| byte b0 = source.readByte(); |
| byte b1 = source.readByte(); |
| byte b2 = source.readByte(); |
| byte b3 = source.readByte(); |
| byte b4 = source.readByte(); |
| byte b5 = source.readByte(); |
| byte b6 = source.readByte(); |
| byte b7 = source.readByte(); |
| return buildLong( b7, b6, b5, b4, b3, b2, b1, b0 ); |
| } |
| } |
| |
| private static short buildShort( byte b1, byte b0 ) |
| { |
| return (short) ( ( ( ( b1 & 0xFF ) << 8 ) | ( ( b0 & 0xFF ) << 0 ) ) ); |
| } |
| |
| private static int buildInt( byte b3, byte b2, byte b1, byte b0 ) |
| { |
| return ( ( ( ( b3 & 0xFF ) << 24 ) | ( ( b2 & 0xFF ) << 16 ) | ( ( b1 & 0xFF ) << 8 ) | ( ( b0 & 0xFF ) << 0 ) ) ); |
| } |
| |
| private static long buildLong( byte b7, byte b6, byte b5, byte b4, byte b3, byte b2, byte b1, byte b0 ) |
| { |
| return ( ( ( ( b7 & 0xFFL ) << 56 ) | ( ( b6 & 0xFFL ) << 48 ) | ( ( b5 & 0xFFL ) << 40 ) |
| | ( ( b4 & 0xFFL ) << 32 ) | ( ( b3 & 0xFFL ) << 24 ) | ( ( b2 & 0xFFL ) << 16 ) | ( ( b1 & 0xFFL ) << 8 ) | ( ( b0 & 0xFFL ) << 0 ) ) ); |
| } |
| |
| } |