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//
// Copyright Alexander Schütz, 2021-2022
//
// This file is part of JavaNativeUtils.
//
// JavaNativeUtils is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// JavaNativeUtils is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// A copy of the GNU Lesser General Public License should be provided
// in the COPYING & COPYING.LESSER files in top level directory of JavaNativeUtils.
// If not, see .
//
package eu.aschuetz.nativeutils.api.structs;
/**
* See
* https://docs.microsoft.com/en-us/windows/win32/api/guiddef/ns-guiddef-guid
*/
public class GUID {
private int data1;
private short data2;
private short data3;
private final byte[] data4 = new byte[8];
public GUID() {
}
public GUID(String txt) {
if (txt.length() != 36) {
throw new IllegalArgumentException("Invalid GUID");
}
txt = txt.toUpperCase();
for (int i = 0; i < txt.length(); i++) {
char c = txt.charAt(i);
if (i == 8 || i == 13 || i == 18 || i == 23) {
if (c != '-') {
throw new IllegalArgumentException("Invalid GUID");
}
continue;
}
if (!Character.isDigit(c) && (c < 'A' || c > 'F')) {
throw new IllegalArgumentException("Invalid GUID");
}
}
try {
data1 = (int) Long.parseLong(txt.substring(0, 0+8), 16);
data2 = (short) Long.parseLong(txt.substring(9, 9+4), 16);
data3 = (short) Long.parseLong(txt.substring(14, 14+4), 16);
data4[0] = (byte) Long.parseLong(txt.substring(19, 19+2), 16);
data4[1] = (byte) Long.parseLong(txt.substring(21, 21+2), 16);
data4[2] = (byte) Long.parseLong(txt.substring(24, 24+2), 16);
data4[3] = (byte) Long.parseLong(txt.substring(26, 26+2), 16);
data4[4] = (byte) Long.parseLong(txt.substring(28, 28+2), 16);
data4[5] = (byte) Long.parseLong(txt.substring(30, 30+2), 16);
data4[6] = (byte) Long.parseLong(txt.substring(32, 32+2), 16);
data4[7] = (byte) Long.parseLong(txt.substring(34, 34+2), 16);
} catch (NumberFormatException exc) {
//Shouldn't happen as check above is more strict than Long.parseLong
throw new IllegalArgumentException("Invalid GUID", exc);
}
}
public int getData1() {
return data1;
}
public void setData1(int data1) {
this.data1 = data1;
}
public short getData2() {
return data2;
}
public void setData2(short data2) {
this.data2 = data2;
}
public short getData3() {
return data3;
}
public void setData3(short data3) {
this.data3 = data3;
}
public byte[] getData4() {
return data4;
}
public void setData4(byte[] data4) {
System.arraycopy(data4, 0, this.data4, 0, 8);
}
public String toString() {
String s1 = Long.toHexString(data1 & 0xffffffffL);
String s2 = Long.toHexString(data2 & 0xffff);
String s3 = Long.toHexString(data3 & 0xffff);
StringBuilder s4 = new StringBuilder();
for (int i = 0; i < data4.length;i++) {
String s = Long.toHexString(data4[i] & 0xff);
if (s.length() == 1) {
s4.append("0");
}
s4.append(s);
}
while(s1.length() < 8) {
s1 = "0" + s1;
}
while(s2.length() < 4) {
s2 = "0" + s2;
}
while(s3.length() < 4) {
s3 = "0" + s3;
}
return (s1 + "-" + s2 + "-" + s3 + "-" + s4.substring(0, 4) + "-" + s4.substring(4)).toUpperCase();
}
@Override
public GUID clone() {
GUID clone = new GUID();
clone.data1 = data1;
clone.data2 = data2;
clone.data3 = data3;
System.arraycopy(data4, 0, clone.data4, 0, 8);
return clone;
}
}
