/**
* BlueCove - Java library for Bluetooth
* Copyright (C) 2006-2007 Vlad Skarzhevskyy
*
* 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.
*
* @author vlads
* @version $Id$
*/
package org.bluecove.tester.util;
import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Writer;
import javax.microedition.io.Connection;
import org.bluecove.tester.log.Logger;
/**
* General IO stream manipulation utilities. closeQuietly functions are based on
* org.apache.commons.io and used here for J2ME
*
* <p>
* This class provides static utility methods for input/output operations.
* <ul>
* <li>closeQuietly - these methods close a stream ignoring nulls and all
* exceptions
* </ul>
* <p>
*/
public class IOUtils {
/**
* Close an <code>InputStream</code>.
* <p>
* Calls {@link InputStream#close()}, any exceptions will be ignored. This
* is used in finally blocks.
*
* @param input
* the InputStream to close, may be null or already closed
*/
public static void closeQuietly(InputStream input) {
try {
if (input != null) {
input.close();
}
} catch (Throwable e) {
if (RuntimeDetect.isBlueCove) {
Logger.error("InputStream.close()", e);
}
}
}
/**
* Close an <code>OutputStream</code>.
* <p>
* Calls {@link OutputStream#close()}, any exceptions will be ignored. This
* is used in finally blocks.
*
* @param output
* the OutputStream to close, may be null or already closed
*/
public static void closeQuietly(OutputStream output) {
try {
if (output != null) {
output.close();
}
} catch (Throwable e) {
if (RuntimeDetect.isBlueCove) {
Logger.error("OutputStream.close()", e);
}
}
}
/**
* Close a <code>Writer</code>.
* <p>
* Calls {@link Writer#close()}, any exceptions will be ignored. This is
* used in finally blocks.
*
* @param output
* the Writer to close, may be null or already closed
*/
public static void closeQuietly(Writer output) {
try {
if (output != null) {
output.close();
}
} catch (Throwable ioe) {
// ignore
}
}
public static void closeQuietly(Connection con) {
try {
if (con != null) {
con.close();
}
} catch (Throwable e) {
if (RuntimeDetect.isBlueCove) {
Logger.error("Connection.close()", e);
}
}
}
public static byte hiByte(int value) {
return (byte) ((value >> 8) & 0xFF);
}
public static byte loByte(int value) {
return (byte) (0xFF & value);
}
public static int bytesToShort(byte valueHi, byte valueLo) {
return ((((int) valueHi << 8) & 0xFF00) + (valueLo & 0xFF));
}
public static void long2Bytes(long value, int size, byte[] b, int offset) {
for (int i = 0; i < size; i++) {
b[offset + i] = (byte) ((value >> (size - 1 << 3) & 0xFF));
value <<= 8;
}
}
public static int byteToUnsignedInt(byte value) {
int i = value;
if (i < 0) {
i = 0x100 + i;
}
return i;
}
public static long bytes2Long(byte[] b, int offset, int size) {
long value = 0;
for (int i = 0; i < size; i++) {
value = (value << 8) | (b[offset + i] & 0xFF);
}
return value;
}
public static byte[] writeByteArray(IsExternalizable streamable) throws IOException {
ByteArrayOutputStream baos = null;
try {
baos = new ByteArrayOutputStream();
DataOutputStream outputStream = new DataOutputStream(baos);
streamable.writeExternal(outputStream);
outputStream.flush();
// Extract the byte array
return baos.toByteArray();
} finally {
closeQuietly(baos);
}
}
}