dorkbox/Utilities
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added start position and length for hex/byte conversions

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This commit is contained in:
nathan 2020-08-14 01:20:35 +02:00
parent 131443e110
commit 7161891b1f
1 changed files with 13 additions and 9 deletions
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22
src/dorkbox/util/Sys.java
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@ -345,11 +345,10 @@ class Sys {
}
public static
int[] bytesToInts(byte[] bytes) {
int length = bytes.length;
int[] bytesToInts(byte[] bytes, int startPosition, int length) {
int[] ints = new int[length];
for (int i = 0; i < length; i++) {
for (int i = startPosition; i < length; i++) {
ints[i] = bytes[i] & 0xFF;
}
@ -358,16 +357,21 @@ class Sys {
public static
String bytesToHex(byte[] bytes) {
return bytesToHex(bytes, false);
return bytesToHex(bytes, 0, bytes.length, false);
}
public static
String bytesToHex(byte[] bytes, boolean padding) {
String bytesToHex(byte[] bytes, int startPosition, int length) {
return bytesToHex(bytes, startPosition, length, false);
}
public static
String bytesToHex(byte[] bytes, int startPosition, int length, boolean padding) {
if (padding) {
char[] hexString = new char[3 * bytes.length];
char[] hexString = new char[3 * length - startPosition];
int j = 0;
for (int i = 0; i < bytes.length; i++) {
for (int i = startPosition; i < length; i++) {
hexString[j++] = HEX_CHARS[(bytes[i] & 0xF0) >> 4];
hexString[j++] = HEX_CHARS[bytes[i] & 0x0F];
hexString[j++] = ' ';
@ -376,10 +380,10 @@ class Sys {
return new String(hexString);
}
else {
char[] hexString = new char[2 * bytes.length];
char[] hexString = new char[2 * length - startPosition];
int j = 0;
for (int i = 0; i < bytes.length; i++) {
for (int i = startPosition; i < length; i++) {
hexString[j++] = HEX_CHARS[(bytes[i] & 0xF0) >> 4];
hexString[j++] = HEX_CHARS[bytes[i] & 0x0F];
}