Android UTF Check isUTFFormat(String p_format)

Description

Verify if the format is an UTF format

License

Apache License

Parameter

Parameter	Description
p_format	format

Return

boolean If the string is UTF-8, UTF-16, UTF-16LE, UTF-16BE then return true, otherwise false

Declaration

public static boolean isUTFFormat(String p_format) 

Method Source Code

/**/*from   www.  j av a  2  s .  co m*/
 *  Copyright 2009 Welocalize, Inc. 
 *  
 *  Licensed 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.
 *  
 */

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.log4j.Logger;

public class Main{
    static public final ArrayList<String> UTF_FORMATS = new ArrayList<String>();
    /**
     * Verify if the format is an UTF format
     * 
     * @param p_format
     *            format
     * @return boolean If the string is UTF-8, UTF-16, UTF-16LE, UTF-16BE then
     *         return true, otherwise false
     * @since 8.2
     */
    public static boolean isUTFFormat(String p_format) {
        if (StringUtil.isEmpty(p_format))
            return false;

        return UTF_FORMATS.contains(p_format);
    }
    /**
     * Check whether a directory is empty
     * 
     * @param f
     * @return
     */
    public static boolean isEmpty(File f) {
        boolean empty = true;

        if (f.isFile()) {
            return false;
        }
        File[] files = f.listFiles();
        for (File file : files) {
            if (!empty) {
                break;
            } else {
                if (file.isDirectory()) {
                    empty = isEmpty(file);
                } else {
                    empty = false;
                }
            }
        }
        return empty;
    }
}

Related

1. getUTFFormat(int p_type)
2. isUTF8(String encoding)
3. utf8Length(byte[] buffer, int str, int len)