FileUtil.java

/******************************************************************
*
*	CyberUtil for Java
*
*	Copyright (C) Satoshi Konno 2002-2003
*
*	File: FileUtil.java
*
*	Revision:
*
*	01/03/03
*		- first revision.
*
******************************************************************/

package org.cybergarage.util;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.util.Locale;

public final class FileUtil
{
	public final static byte[] load(String fileName)
	{
		try {	
			FileInputStream fin=new FileInputStream(fileName);
			return load(fin);
		}
		catch (Exception e) {
			Debug.warning(e);
			return new byte[0];
		}
	}

	public final static byte[] load(File file)
	{
		try {	
			FileInputStream fin=new FileInputStream(file);
			return load(fin);
		}
		catch (Exception e) {
			Debug.warning(e);
			return new byte[0];
		}
	}

	public final static byte[] load(FileInputStream fin)
	{
		byte readBuf[] = new byte[512*1024];
	
		try {	
			ByteArrayOutputStream bout = new ByteArrayOutputStream();
		
			int readCnt = fin.read(readBuf);
			while (0 < readCnt) {
				bout.write(readBuf, 0, readCnt);
				readCnt = fin.read(readBuf);
			}
			
			fin.close();
			
			return bout.toByteArray();
		}
		catch (Exception e) {
			Debug.warning(e);
			return new byte[0];
		}
	}
	
	public final static boolean isXMLFileName(String name)
	{
		if (StringUtil.hasData(name) == false)
			return false;
		String lowerName = name.toLowerCase(Locale.US);
		return lowerName.endsWith("xml");
	}
}