- /*
- * @(#)file SnmpTools.java
- * @(#)author Sun Microsystems, Inc.
- * @(#)version 1.15
- * @(#)date 04/09/15
- *
- * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- *
- */
- package com.sun.jmx.snmp.internal;
-
- import com.sun.jmx.snmp.SnmpDefinitions;
- /**
- * Utility class used to deal with various data representations.
- * <p><b>This API is a Sun Microsystems internal API and is subject
- * to change without notice.</b></p>
- * @since 1.5
- */
- public class SnmpTools implements SnmpDefinitions {
-
- /**
- * Translates a binary representation in an ASCII one. The returned string is an hexadecimal string starting with 0x.
- * @param data Binary to translate.
- * @return Translated binary.
- */
- static public String binary2ascii(byte[] data, int length)
- {
- if(data == null) return null;
- final int size = (length * 2) + 2;
- byte[] asciiData = new byte[size];
- asciiData[0] = (byte) '0';
- asciiData[1] = (byte) 'x';
- for (int i=0; i < length; i++) {
- int j = i*2;
- int v = (data[i] & 0xf0);
- v = v >> 4;
- if (v < 10)
- asciiData[j+2] = (byte) ('0' + v);
- else
- asciiData[j+2] = (byte) ('A' + (v - 10));
- v = ((data[i] & 0xf));
- if (v < 10)
- asciiData[j+1+2] = (byte) ('0' + v);
- else
- asciiData[j+1+2] = (byte) ('A' + (v - 10));
- }
- return new String(asciiData);
- }
-
- /**
- * Translates a binary representation in an ASCII one. The returned string is an hexadecimal string starting with 0x.
- * @param data Binary to translate.
- * @return Translated binary.
- */
- static public String binary2ascii(byte[] data)
- {
- return binary2ascii(data, data.length);
- }
- /**
- * Translates a stringified representation in a binary one. The passed string is an hexadecimal one starting with 0x.
- * @param str String to translate.
- * @return Translated string.
- */
- static public byte[] ascii2binary(String str) {
- if(str == null) return null;
- String val = str.substring(2);
-
- int size = val.length();
- byte []buf = new byte[size2];
- byte []p = val.getBytes();
-
- for(int i = 0; i < (int) (size / 2); i++)
- {
- int j = i * 2;
- byte v = 0;
- if (p[j] >= '0' && p[j] <= '9') {
- v = (byte) ((p[j] - '0') << 4);
- }
- else if (p[j] >= 'a' && p[j] <= 'f') {
- v = (byte) ((p[j] - 'a' + 10) << 4);
- }
- else if (p[j] >= 'A' && p[j] <= 'F') {
- v = (byte) ((p[j] - 'A' + 10) << 4);
- }
- else
- throw new Error("BAD format :" + str);
-
- if (p[j+1] >= '0' && p[j+1] <= '9') {
- //System.out.println("ascii : " + p[j+1]);
- v += (p[j+1] - '0');
- //System.out.println("binary : " + v);
- }
- else if (p[j+1] >= 'a' && p[j+1] <= 'f') {
- //System.out.println("ascii : " + p[j+1]);
- v += (p[j+1] - 'a' + 10);
- //System.out.println("binary : " + v+1);
- }
- else if (p[j+1] >= 'A' && p[j+1] <= 'F') {
- //System.out.println("ascii : " + p[j+1]);
- v += (p[j+1] - 'A' + 10);
- //System.out.println("binary : " + v);
- }
- else
- throw new Error("BAD format :" + str);
-
- buf[i] = (byte) v;
- }
- return buf;
- }
- }