| | |
| | | package org.openmuc.openiec61850; |
| | | |
| | | public class HexConverter { |
| | | |
| | | public static String toHexString(byte b) { |
| | | StringBuilder builder = new StringBuilder(); |
| | | appendHexString(b, builder); |
| | | return builder.toString(); |
| | | } |
| | | |
| | | public static String toHexString(byte[] bytes) { |
| | | return toHexString(bytes, 0, bytes.length); |
| | | } |
| | | |
| | | public static String toHexString(byte[] bytes, int offset, int length) { |
| | | StringBuilder builder = new StringBuilder(); |
| | | |
| | | int l = 1; |
| | | for (int i = offset; i < (offset + length); i++) { |
| | | if ((l != 1) && ((l - 1) % 8 == 0)) { |
| | | builder.append(' '); |
| | | } |
| | | if ((l != 1) && ((l - 1) % 16 == 0)) { |
| | | builder.append('\n'); |
| | | } |
| | | l++; |
| | | appendHexString(bytes[i], builder); |
| | | if (i != offset + length - 1) { |
| | | builder.append(' '); |
| | | } |
| | | } |
| | | |
| | | return builder.toString(); |
| | | } |
| | | |
| | | /** |
| | | * Returns the integer value as hex string filled with leading zeros. If you do not want leading zeros use |
| | | * Integer.toHexString(int i) instead. |
| | | * |
| | | * @param i |
| | | * the integer value to be converted |
| | | * @return the hex string |
| | | */ |
| | | public static String toShortHexString(int i) { |
| | | byte[] bytes = new byte[] { (byte) (i >> 24), (byte) (i >> 16), (byte) (i >> 8), (byte) (i) }; |
| | | return toShortHexString(bytes); |
| | | } |
| | | |
| | | /** |
| | | * Returns the long value as hex string filled with leading zeros. If you do not want leading zeros use |
| | | * Long.toHexString(long i) instead. |
| | | * |
| | | * @param l |
| | | * the long value to be converted |
| | | * @return the hex string |
| | | */ |
| | | public static String toShortHexString(long l) { |
| | | byte[] bytes = new byte[] { (byte) (l >> 56), (byte) (l >> 48), (byte) (l >> 40), (byte) (l >> 32), |
| | | (byte) (l >> 24), (byte) (l >> 16), (byte) (l >> 8), (byte) (l) }; |
| | | return toShortHexString(bytes); |
| | | } |
| | | |
| | | /** |
| | | * Returns the byte as a hex string. If b is less than 16 the hex string returned contains a leading zero. |
| | | * |
| | | * @param b |
| | | * the byte to be converted |
| | | * @return the byte as a hex string. |
| | | */ |
| | | public static String toShortHexString(byte b) { |
| | | return toShortHexString(new byte[] { b }); |
| | | } |
| | | |
| | | private final static char[] hexArray = "0123456789ABCDEF".toCharArray(); |
| | | |
| | | public static String toShortHexString(byte[] bytes) { |
| | | return toShortHexString(bytes, 0, bytes.length); |
| | | } |
| | | |
| | | public static String toShortHexString(byte[] bytes, int offset, int length) { |
| | | char[] hexChars = new char[length * 2]; |
| | | for (int j = offset; j < (offset + length); j++) { |
| | | int v = bytes[j] & 0xff; |
| | | hexChars[j * 2] = hexArray[v >>> 4]; |
| | | hexChars[j * 2 + 1] = hexArray[v & 0x0f]; |
| | | } |
| | | return new String(hexChars); |
| | | } |
| | | |
| | | public static byte[] fromShortHexString(String shortHexString) throws NumberFormatException { |
| | | |
| | | validate(shortHexString); |
| | | |
| | | int length = shortHexString.length(); |
| | | |
| | | byte[] data = new byte[length / 2]; |
| | | for (int i = 0; i < length; i += 2) { |
| | | int firstCharacter = Character.digit(shortHexString.charAt(i), 16); |
| | | int secondCharacter = Character.digit(shortHexString.charAt(i + 1), 16); |
| | | |
| | | if (firstCharacter == -1 || secondCharacter == -1) { |
| | | throw new NumberFormatException("string is not a legal hex string."); |
| | | } |
| | | |
| | | data[i / 2] = (byte) ((firstCharacter << 4) + secondCharacter); |
| | | } |
| | | return data; |
| | | } |
| | | |
| | | public static void appendShortHexString(byte b, StringBuilder builder) { |
| | | builder.append(toShortHexString(b)); |
| | | } |
| | | |
| | | public static void appendShortHexString(StringBuilder builder, byte[] bytes, int offset, int length) { |
| | | builder.append(toShortHexString(bytes, offset, length)); |
| | | } |
| | | |
| | | public static void appendHexString(byte b, StringBuilder builder) { |
| | | builder.append("0x"); |
| | | appendShortHexString(b, builder); |
| | | } |
| | | |
| | | public static void appendHexString(StringBuilder builder, byte[] byteArray, int offset, int length) { |
| | | int l = 1; |
| | | for (int i = offset; i < (offset + length); i++) { |
| | | if ((l != 1) && ((l - 1) % 8 == 0)) { |
| | | builder.append(' '); |
| | | } |
| | | if ((l != 1) && ((l - 1) % 16 == 0)) { |
| | | builder.append('\n'); |
| | | } |
| | | l++; |
| | | appendHexString(byteArray[i], builder); |
| | | if (i != offset + length - 1) { |
| | | builder.append(' '); |
| | | } |
| | | } |
| | | } |
| | | |
| | | private static void validate(String s) { |
| | | if (s == null) { |
| | | throw new IllegalArgumentException("string s may not be null"); |
| | | } |
| | | |
| | | if ((s.length() == 0) || ((s.length() % 2) != 0)) { |
| | | throw new NumberFormatException("string is not a legal hex string."); |
| | | } |
| | | } |
| | | |
| | | /** |
| | | * Don't let anyone instantiate this class. |
| | | */ |
| | | private HexConverter() { |
| | | } |
| | | } |
| | | package org.openmuc.openiec61850;
|
| | |
|
| | | public class HexConverter {
|
| | |
|
| | | public static String toHexString(byte b) {
|
| | | StringBuilder builder = new StringBuilder();
|
| | | appendHexString(b, builder);
|
| | | return builder.toString();
|
| | | }
|
| | |
|
| | | public static String toHexString(byte[] bytes) {
|
| | | return toHexString(bytes, 0, bytes.length);
|
| | | }
|
| | |
|
| | | public static String toHexString(byte[] bytes, int offset, int length) {
|
| | | StringBuilder builder = new StringBuilder();
|
| | |
|
| | | int l = 1;
|
| | | for (int i = offset; i < (offset + length); i++) {
|
| | | if ((l != 1) && ((l - 1) % 8 == 0)) {
|
| | | builder.append(' ');
|
| | | }
|
| | | if ((l != 1) && ((l - 1) % 16 == 0)) {
|
| | | builder.append('\n');
|
| | | }
|
| | | l++;
|
| | | appendHexString(bytes[i], builder);
|
| | | if (i != offset + length - 1) {
|
| | | builder.append(' ');
|
| | | }
|
| | | }
|
| | |
|
| | | return builder.toString();
|
| | | }
|
| | |
|
| | | /**
|
| | | * Returns the integer value as hex string filled with leading zeros. If you do not want leading zeros use
|
| | | * Integer.toHexString(int i) instead.
|
| | | * |
| | | * @param i
|
| | | * the integer value to be converted
|
| | | * @return the hex string
|
| | | */
|
| | | public static String toShortHexString(int i) {
|
| | | byte[] bytes = new byte[] { (byte) (i >> 24), (byte) (i >> 16), (byte) (i >> 8), (byte) (i) };
|
| | | return toShortHexString(bytes);
|
| | | }
|
| | |
|
| | | /**
|
| | | * Returns the long value as hex string filled with leading zeros. If you do not want leading zeros use
|
| | | * Long.toHexString(long i) instead.
|
| | | * |
| | | * @param l
|
| | | * the long value to be converted
|
| | | * @return the hex string
|
| | | */
|
| | | public static String toShortHexString(long l) {
|
| | | byte[] bytes = new byte[] { (byte) (l >> 56), (byte) (l >> 48), (byte) (l >> 40), (byte) (l >> 32),
|
| | | (byte) (l >> 24), (byte) (l >> 16), (byte) (l >> 8), (byte) (l) };
|
| | | return toShortHexString(bytes);
|
| | | }
|
| | |
|
| | | /**
|
| | | * Returns the byte as a hex string. If b is less than 16 the hex string returned contains a leading zero.
|
| | | * |
| | | * @param b
|
| | | * the byte to be converted
|
| | | * @return the byte as a hex string.
|
| | | */
|
| | | public static String toShortHexString(byte b) {
|
| | | return toShortHexString(new byte[] { b });
|
| | | }
|
| | |
|
| | | private final static char[] hexArray = "0123456789ABCDEF".toCharArray();
|
| | |
|
| | | public static String toShortHexString(byte[] bytes) {
|
| | | return toShortHexString(bytes, 0, bytes.length);
|
| | | }
|
| | |
|
| | | public static String toShortHexString(byte[] bytes, int offset, int length) {
|
| | | char[] hexChars = new char[length * 2];
|
| | | for (int j = offset; j < (offset + length); j++) {
|
| | | int v = bytes[j] & 0xff;
|
| | | hexChars[j * 2] = hexArray[v >>> 4];
|
| | | hexChars[j * 2 + 1] = hexArray[v & 0x0f];
|
| | | }
|
| | | return new String(hexChars);
|
| | | }
|
| | |
|
| | | public static byte[] fromShortHexString(String shortHexString) throws NumberFormatException {
|
| | |
|
| | | validate(shortHexString);
|
| | |
|
| | | int length = shortHexString.length();
|
| | |
|
| | | byte[] data = new byte[length / 2];
|
| | | for (int i = 0; i < length; i += 2) {
|
| | | int firstCharacter = Character.digit(shortHexString.charAt(i), 16);
|
| | | int secondCharacter = Character.digit(shortHexString.charAt(i + 1), 16);
|
| | |
|
| | | if (firstCharacter == -1 || secondCharacter == -1) {
|
| | | throw new NumberFormatException("string is not a legal hex string.");
|
| | | }
|
| | |
|
| | | data[i / 2] = (byte) ((firstCharacter << 4) + secondCharacter);
|
| | | }
|
| | | return data;
|
| | | }
|
| | |
|
| | | public static void appendShortHexString(byte b, StringBuilder builder) {
|
| | | builder.append(toShortHexString(b));
|
| | | }
|
| | |
|
| | | public static void appendShortHexString(StringBuilder builder, byte[] bytes, int offset, int length) {
|
| | | builder.append(toShortHexString(bytes, offset, length));
|
| | | }
|
| | |
|
| | | public static void appendHexString(byte b, StringBuilder builder) {
|
| | | builder.append("0x");
|
| | | appendShortHexString(b, builder);
|
| | | }
|
| | |
|
| | | public static void appendHexString(StringBuilder builder, byte[] byteArray, int offset, int length) {
|
| | | int l = 1;
|
| | | for (int i = offset; i < (offset + length); i++) {
|
| | | if ((l != 1) && ((l - 1) % 8 == 0)) {
|
| | | builder.append(' ');
|
| | | }
|
| | | if ((l != 1) && ((l - 1) % 16 == 0)) {
|
| | | builder.append('\n');
|
| | | }
|
| | | l++;
|
| | | appendHexString(byteArray[i], builder);
|
| | | if (i != offset + length - 1) {
|
| | | builder.append(' ');
|
| | | }
|
| | | }
|
| | | }
|
| | |
|
| | | private static void validate(String s) {
|
| | | if (s == null) {
|
| | | throw new IllegalArgumentException("string s may not be null");
|
| | | }
|
| | |
|
| | | if ((s.length() == 0) || ((s.length() % 2) != 0)) {
|
| | | throw new NumberFormatException("string is not a legal hex string.");
|
| | | }
|
| | | }
|
| | |
|
| | | /**
|
| | | * Don't let anyone instantiate this class.
|
| | | */
|
| | | private HexConverter() {
|
| | | }
|
| | | }
|