Android Text File Write writeFileWithBom(File file, String content, String encoding)

Description

write File With Bom

License

Apache License

Declaration

public static void writeFileWithBom(File file, String content,
            String encoding) throws IOException 

Method Source Code

/**/*from  www  .  j  a  v a 2 s.com*/
 *  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 private final Logger logger = Logger.getLogger(FileUtil.class);
    static public final String UTF8 = "UTF-8";
    static public final String UTF16LE = "UTF-16LE";
    static public final String UTF16BE = "UTF-16BE";
    public static void writeFileWithBom(File file, String content,
            String encoding) throws IOException {
        if (!file.exists()) {
            file.getParentFile().mkdirs();
        }

        FileOutputStream out = null;

        try {
            out = new FileOutputStream(file);
            writeBom(out, encoding);
            out.write(content.getBytes(encoding));
        } finally {
            if (out != null) {
                out.flush();
                out.close();
            }
        }
    }
    /**
     * Writes the BOM(Byte Order Mark) to the file.
     * 
     * @param p_outputStream
     * @param encoding
     */
    public static void writeBom(OutputStream outputStream, String encoding) {
        if (outputStream != null && encoding != null) {
            byte[] b = null;

            if (UTF8.equals(encoding)) {
                b = new byte[3];
                b[0] = (byte) 0xef;
                b[1] = (byte) 0xbb;
                b[2] = (byte) 0xbf;
            } else if (UTF16LE.equals(encoding)) {
                b = new byte[2];
                b[0] = (byte) 0xff;
                b[1] = (byte) 0xfe;
            } else if (UTF16BE.equals(encoding)) {
                b = new byte[2];
                b[0] = (byte) 0xfe;
                b[1] = (byte) 0xff;
            }

            if (b != null) {
                try {
                    outputStream.write(b);
                } catch (IOException e) {
                    logger.error(e.getMessage(), e);
                }
            }
        }
    }
}

Related

1. writeFileAsString(File file, String text, String encoding)
2. writeFileAsString(String filename, String text)
3. writeFileAsString(String filename, String text, String encoding)
4. writeFileAsStringWorldWritable(File file, String text)
5. writeFileAtomically(File file, String content, String encoding)
6. writeLargerTextFile(File file, List aLines)
7. writeLineTextFile(File file, String data)
8. writeLineTextFile(File file, String[] dataArray)
9. writeSet2File(Set set, String filePath)