Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* 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 libthrift091;
/**
* Utility methods for use when encoding/decoding raw data as byte arrays.
*/
public class EncodingUtils {
/**
* Encode integer as a series of 4 bytes into buf
* starting at position 0 within that buffer.
*
* @param integer
* The integer to encode.
* @param buf
* The buffer to write to.
*/
public static final void encodeBigEndian(final int integer, final byte[] buf) {
encodeBigEndian(integer, buf, 0);
}
/**
* Encode integer as a series of 4 bytes into buf
* starting at position offset.
*
* @param integer
* The integer to encode.
* @param buf
* The buffer to write to.
* @param offset
* The offset within buf to start the encoding.
*/
public static final void encodeBigEndian(final int integer, final byte[] buf, int offset) {
buf[offset] = (byte) (0xff & (integer >> 24));
buf[offset + 1] = (byte) (0xff & (integer >> 16));
buf[offset + 2] = (byte) (0xff & (integer >> 8));
buf[offset + 3] = (byte) (0xff & (integer));
}
/**
* Decode a series of 4 bytes from buf, starting at position 0,
* and interpret them as an integer.
*
* @param buf
* The buffer to read from.
* @return An integer, as read from the buffer.
*/
public static final int decodeBigEndian(final byte[] buf) {
return decodeBigEndian(buf, 0);
}
/**
* Decode a series of 4 bytes from buf, start at
* offset, and interpret them as an integer.
*
* @param buf
* The buffer to read from.
* @param offset
* The offset with buf to start the decoding.
* @return An integer, as read from the buffer.
*/
public static final int decodeBigEndian(final byte[] buf, int offset) {
return ((buf[offset] & 0xff) << 24) | ((buf[offset + 1] & 0xff) << 16)
| ((buf[offset + 2] & 0xff) << 8) | ((buf[offset + 3] & 0xff));
}
/**
* Bitfield utilities.
* Returns true if the bit at position is set in v.
*/
public static final boolean testBit(byte v, int position) {
return testBit((int)v, position);
}
public static final boolean testBit(short v, int position) {
return testBit((int)v, position);
}
public static final boolean testBit(int v, int position) {
return (v & (1 << position)) != 0;
}
public static final boolean testBit(long v, int position) {
return (v & (1L << position)) != 0L;
}
/**
* Returns v, with the bit at position set to zero.
*/
public static final byte clearBit(byte v, int position) {
return (byte)clearBit((int)v, position);
}
public static final short clearBit(short v, int position) {
return (short)clearBit((int)v, position);
}
public static final int clearBit(int v, int position) {
return v & ~(1 << position);
}
public static final long clearBit(long v, int position) {
return v & ~(1L << position);
}
/**
* Returns v, with the bit at position set to 1 or 0 depending on value.
*/
public static final byte setBit(byte v, int position, boolean value) {
return (byte)setBit((int)v, position, value);
}
public static final short setBit(short v, int position, boolean value) {
return (short)setBit((int)v, position, value);
}
public static final int setBit(int v, int position, boolean value) {
if(value)
return v | (1 << position);
else
return clearBit(v, position);
}
public static final long setBit(long v, int position, boolean value) {
if(value)
return v | (1L << position);
else
return clearBit(v, position);
}
}
