Java Dump File dumpFile(String filename)

Description

dump File

License

Open Source License

Declaration

public static void dumpFile(String filename) throws IOException 

Method Source Code

//package com.java2s;
/*// w  w  w  . jav  a  2  s  .c  o  m
 * Copyright (c) 2006 Leonardo "Bubble" Mesquita
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy 
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights 
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
 * copies of the Software, and to permit persons to whom the Software is 
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in 
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class Main {
    public static void dumpFile(String filename) throws IOException {
        File file = new File(filename);
        FileInputStream input = new FileInputStream(file);
        byte[] data = new byte[(int) file.length()];
        input.read(data);
        System.out.println(filename + ":");
        dump(data);
    }

    public static void dump(byte[] array) {
        dump(array, 0, array.length);
    }

    public static void dump(byte[] array, int index, int length) {
        if (array == null) {
            System.out.println("(null byte array)");
            return;
        }
        String line = "";
        String side = "";
        int column = 0;

        for (int i = index, count = length; count > 0; i++, count--) {
            byte b = array[i];
            if (b >= 0 && b < 32) {
                line += ".";
            } else {
                line += (char) (b);
            }
            side += toHex(b) + " ";
            column++;
            if (column >= 16) {
                System.out.println(line + " | " + side);
                line = "";
                side = "";
                column = 0;
            }
        }
        if (column > 0) {
            for (; column < 16; column++) {
                line += " ";
                side += "   ";
            }
            System.out.println(line + " | " + side);
        }
    }

    public static String toHex(byte value) {
        int d1 = (value >> 4) & 0xF;
        int d2 = value & 0xF;
        return Character.forDigit(d1, 16) + "" + Character.forDigit(d2, 16);
    }
}

Related

1. dumpFile(final Reader rdr)
2. dumpFile(String filename)
3. dumpToFile(String dest, String content)
4. dumpToFile(String fileName, String buffer, boolean append)
5. dumpToFile(String name, String string)
6. dumptoTempFile(List lineItems)