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Code Issues Releases Wiki Activity

move util/HexDump class from example to library

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This commit is contained in:
kai-morich
2023-07-22 09:46:30 +02:00
parent fd8c155ca5
commit d15f4d52bb
1 changed files with 3 additions and 4 deletions
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usbSerialExamples/src/main/java/com/hoho/android/usbserial/util/HexDump.java
-153
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@@ -1,153 +0,0 @@
/*
* Copyright (C) 2006 The Android Open Source Project
*
* 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 com.hoho.android.usbserial.util;
import java.security.InvalidParameterException;
/**
* Clone of Android's HexDump class, for use in debugging. Cosmetic changes
* only.
*/
public class HexDump {
private final static char[] HEX_DIGITS = {
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
};
public static String dumpHexString(byte[] array) {
return dumpHexString(array, 0, array.length);
}
public static String dumpHexString(byte[] array, int offset, int length) {
StringBuilder result = new StringBuilder();
byte[] line = new byte[8];
int lineIndex = 0;
for (int i = offset; i < offset + length; i++) {
if (lineIndex == line.length) {
for (int j = 0; j < line.length; j++) {
if (line[j] > ' ' && line[j] < '~') {
result.append(new String(line, j, 1));
} else {
result.append(".");
}
}
result.append("\n");
lineIndex = 0;
}
byte b = array[i];
result.append(HEX_DIGITS[(b >>> 4) & 0x0F]);
result.append(HEX_DIGITS[b & 0x0F]);
result.append(" ");
line[lineIndex++] = b;
}
for (int i = 0; i < (line.length - lineIndex); i++) {
result.append(" ");
}
for (int i = 0; i < lineIndex; i++) {
if (line[i] > ' ' && line[i] < '~') {
result.append(new String(line, i, 1));
} else {
result.append(".");
}
}
return result.toString();
}
public static String toHexString(byte b) {
return toHexString(toByteArray(b));
}
public static String toHexString(byte[] array) {
return toHexString(array, 0, array.length);
}
public static String toHexString(byte[] array, int offset, int length) {
char[] buf = new char[length * 2];
int bufIndex = 0;
for (int i = offset; i < offset + length; i++) {
byte b = array[i];
buf[bufIndex++] = HEX_DIGITS[(b >>> 4) & 0x0F];
buf[bufIndex++] = HEX_DIGITS[b & 0x0F];
}
return new String(buf);
}
public static String toHexString(int i) {
return toHexString(toByteArray(i));
}
public static String toHexString(short i) {
return toHexString(toByteArray(i));
}
public static byte[] toByteArray(byte b) {
byte[] array = new byte[1];
array[0] = b;
return array;
}
public static byte[] toByteArray(int i) {
byte[] array = new byte[4];
array[3] = (byte) (i & 0xFF);
array[2] = (byte) ((i >> 8) & 0xFF);
array[1] = (byte) ((i >> 16) & 0xFF);
array[0] = (byte) ((i >> 24) & 0xFF);
return array;
}
public static byte[] toByteArray(short i) {
byte[] array = new byte[2];
array[1] = (byte) (i & 0xFF);
array[0] = (byte) ((i >> 8) & 0xFF);
return array;
}
private static int toByte(char c) {
if (c >= '0' && c <= '9')
return (c - '0');
if (c >= 'A' && c <= 'F')
return (c - 'A' + 10);
if (c >= 'a' && c <= 'f')
return (c - 'a' + 10);
throw new InvalidParameterException("Invalid hex char '" + c + "'");
}
public static byte[] hexStringToByteArray(String hexString) {
int length = hexString.length();
byte[] buffer = new byte[length / 2];
for (int i = 0; i < length; i += 2) {
buffer[i / 2] = (byte) ((toByte(hexString.charAt(i)) << 4) | toByte(hexString
.charAt(i + 1)));
}
return buffer;
}
}