Java Hex Format formatHexString(final String input, final int charsPerLine)

Description

format Hex String

License

Open Source License

Declaration

public static String formatHexString(final String input, final int charsPerLine) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    public final static int BITS_PER_HEX_DIGIT = 4;
    public static final String HEX_STRING_PREFIX1 = "0x";
    public static final String HEX_STRING_PREFIX2 = "0X";

    public static String formatHexString(final String input, final int charsPerLine) {
        StringBuilder buf = new StringBuilder(input.length() * 2);

        int index = 0;
        while ((index + charsPerLine) < input.length()) {
            String str = input.substring(index, index + charsPerLine);
            buf.append(spaceHexString(str));
            buf.append("\n");
            index += charsPerLine;/*  w w w .java2s. c om*/
        }

        String str = input.substring(index);
        buf.append(spaceHexString(str));

        return (buf.toString());
    }

    public static String spaceHexString(String hexString) {
        hexString = stripHexPrefix(hexString);

        int i = 0;
        StringBuilder buf = new StringBuilder(hexString.length() * 2);
        for (i = 0; i < hexString.length(); i += BITS_PER_HEX_DIGIT) {
            if (i + BITS_PER_HEX_DIGIT >= hexString.length()) {
                break;
            }

            buf.append(hexString.substring(i, i + BITS_PER_HEX_DIGIT));
            buf.append(" ");
        }
        buf.append(hexString.substring(i));

        return (buf.toString());
    }

    public static String stripHexPrefix(String hexSymbols) {
        if (hexSymbols.startsWith(HEX_STRING_PREFIX1)) {
            hexSymbols = hexSymbols.substring(HEX_STRING_PREFIX1.length());
        } else if (hexSymbols.startsWith(HEX_STRING_PREFIX2)) {
            hexSymbols = hexSymbols.substring(HEX_STRING_PREFIX2.length());
        }

        return (hexSymbols);
    }
}

Related

1. formatHex(Integer input)
2. formatHexBytes(byte[] raw)
3. formatHexInt(final StringBuilder dst, final int p, int w)
4. formatHexReversed(String original, int length)
5. formatHexStr(int width, String hexStr)
6. formatHexToString(byte[] bytes)
7. formatInHex(byte[] bySrc, int nLineLen)
8. formatText(String value, boolean showAsHexFlag)
9. formatToHex(int rgb)