| /* |
| * Copyright 2015 Open Networking Laboratory |
| * |
| * 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. |
| */ |
| package org.onosproject.pcep.tools; |
| |
| import javax.xml.bind.DatatypeConverter; |
| |
| /** |
| * tools fo pcep app. |
| */ |
| public abstract class PcepTools { |
| |
| private PcepTools() { |
| |
| } |
| |
| /** |
| * Converts decimal byte array to a hex string. |
| * |
| * @param byteArray byte array |
| * @return a hex string |
| */ |
| public static String toHexString(byte[] byteArray) { |
| return DatatypeConverter.printHexBinary(byteArray); |
| } |
| |
| /** |
| * Converts a hex string to a decimal byte array. |
| * |
| * @param hexString a hex string |
| * @return byte array |
| */ |
| public static byte[] toByteArray(String hexString) { |
| return DatatypeConverter.parseHexBinary(hexString); |
| } |
| |
| /** |
| * Converts a byte array to a decimal string. |
| * |
| * @param bytes a byte array |
| * @return a decimal string |
| */ |
| public static String toDecimalString(byte[] bytes) { |
| String str = ""; |
| for (int i = 0; i < bytes.length; i++) { |
| str += String.valueOf(bytes[i]); |
| } |
| return str; |
| } |
| |
| /** |
| * convert a string to the form of ip address. |
| * |
| * @param str a string |
| * @return a string with ip format |
| */ |
| public static String stringToIp(String str) { |
| long ipInt = Long.parseLong(str, 16); |
| return longToIp(ipInt); |
| } |
| |
| /** |
| * convert a long to ip format. |
| * |
| * @param ipLong a decimal number. |
| * @return a ip format string |
| */ |
| public static String longToIp(long ipLong) { |
| StringBuilder sb = new StringBuilder(); |
| sb.append((ipLong >> 24) & 0xFF).append("."); |
| sb.append((ipLong >> 16) & 0xFF).append("."); |
| sb.append((ipLong >> 8) & 0xFF).append("."); |
| sb.append(ipLong & 0xFF); |
| return sb.toString(); |
| } |
| |
| /** |
| * convert a string with ip format to a long. |
| * |
| * @param strIp a string with ip format |
| * @return a long number |
| */ |
| public static long ipToLong(String strIp) { |
| long[] ip = new long[4]; |
| int position1 = strIp.indexOf("."); |
| int position2 = strIp.indexOf(".", position1 + 1); |
| int position3 = strIp.indexOf(".", position2 + 1); |
| ip[0] = Long.parseLong(strIp.substring(0, position1)); |
| ip[1] = Long.parseLong(strIp.substring(position1 + 1, position2)); |
| ip[2] = Long.parseLong(strIp.substring(position2 + 1, position3)); |
| ip[3] = Long.parseLong(strIp.substring(position3 + 1)); |
| return (ip[0] << 24) + (ip[1] << 16) + (ip[2] << 8) + ip[3]; |
| } |
| |
| /** |
| * get a integer value from a cut string. |
| * |
| * @param str a whole string |
| * @param base cut the string from this index |
| * @param offset the offset when execute the cut |
| * @return a integer value |
| */ |
| public static int tranferHexStringToInt(String str, int base, int offset) { |
| return Integer.parseInt(str.substring(base, offset), 16); |
| |
| } |
| } |