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Fix generator

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This commit is contained in:
zontreck 2024-05-08 13:03:26 -07:00
parent a9abed7279
commit c98b8d5d67
1 changed files with 35 additions and 49 deletions
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84
lib/utils/uuid/UUID.dart
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@ -7,27 +7,18 @@ import 'package:libac_flutter/nbt/Stream.dart';
class UUID { class UUID {
late final int LSB; late final int LSB;
late final int MSB; late final int MSB;
late final List<int> _bytes;
UUID(int msb, int lsb) { UUID(int msb, int lsb) {
MSB = msb.abs(); MSB = msb;
LSB = lsb.abs(); LSB = lsb;
}
UUID.fromBytes(List<int> bytes) { ByteLayer layer = ByteLayer();
int msb = 0; layer.writeLong(MSB);
int lsb = 0; layer.writeLong(LSB);
layer.resetPosition();
int i = 0; _bytes = layer.readBytes(16);
for (i = 0; i < 8; ++i) {
msb = msb << 8 | bytes[i] & 255;
}
for (i = 8; i < 16; ++i) {
lsb = lsb << 8 | bytes[i] & 255;
}
this.MSB = msb;
this.LSB = lsb;
} }
static final UUID ZERO = UUID.generate(0); static final UUID ZERO = UUID.generate(0);
@ -51,8 +42,24 @@ class UUID {
final msbString = segments.sublist(0, 3).join(''); final msbString = segments.sublist(0, 3).join('');
final lsbString = segments.sublist(3, 5).join(''); final lsbString = segments.sublist(3, 5).join('');
final msb = int.parse(msbString, radix: 16); int msb = 0;
final lsb = int.parse(lsbString, radix: 16); int lsb = 0;
int i = 0;
ByteLayer layer = ByteLayer();
for (i = 0; i < msbString.length; i += 2) {
int byte = int.parse(msbString.substring(i, i + 1), radix: 16);
layer.writeByte(byte);
}
for (i = 0; i < lsbString.length; i += 2) {
int byte = int.parse(lsbString.substring(i, i + 1), radix: 16);
layer.writeByte(byte);
}
layer.resetPosition();
msb = layer.readLong();
lsb = layer.readLong();
return UUID(msb, lsb); return UUID(msb, lsb);
} else } else
@ -61,9 +68,11 @@ class UUID {
@override @override
String toString() { String toString() {
final msbHex = MSB.toRadixString(16).padLeft(16, '0'); String hexBuilder = "";
final lsbHex = LSB.toRadixString(16).padLeft(16, '0'); for (int byte in _bytes) {
return '${msbHex.substring(0, 8)}-${msbHex.substring(8, 12)}-${msbHex.substring(12, 16)}-${lsbHex.substring(0, 4)}-${lsbHex.substring(4, 16)}'; hexBuilder += byte.toRadixString(16).padLeft(2, '0');
}
return '${hexBuilder.substring(0, 8)}-${hexBuilder.substring(8, 12)}-${hexBuilder.substring(12, 16)}-${hexBuilder.substring(16, 20)}-${hexBuilder.substring(20, 32)}';
} }
/// Returns the Most Significant Bits (MSB) long value of the UUID. /// Returns the Most Significant Bits (MSB) long value of the UUID.
@ -94,47 +103,24 @@ class UUID {
ByteLayer layer = ByteLayer(); ByteLayer layer = ByteLayer();
if (!namespace.isEmpty) { final namespaceBytes = utf8.encode(namespace);
final namespaceBytes = utf8.encode(namespace); layer.writeBytes(namespaceBytes);
layer.writeBytes(namespaceBytes); final nameBytes = utf8.encode(name);
} layer.writeBytes(nameBytes);
if (!name.isEmpty) {
final nameBytes = utf8.encode(name);
layer.writeBytes(nameBytes);
}
var bytes = md5.convert(List.from(layer.bytes)).bytes; var bytes = md5.convert(List.from(layer.bytes)).bytes;
layer.clear(); layer.clear();
layer.writeBytes(bytes); layer.writeBytes(bytes);
layer.unsetSetBit(6, 0x0F, 0x30); layer.unsetSetBit(6, 0x0F, 0x30);
print(
"Existing bit at position 8: ${layer.getBit(8).toRadixString(2)}:${layer.getBit(8)}");
layer.unsetSetBit(8, 0x3F, 0x80); layer.unsetSetBit(8, 0x3F, 0x80);
print(
"New bit at position 8: ${layer.getBit(8).toRadixString(2)}:${layer.getBit(8)}");
layer.resetPosition();
String csv = "";
for (int byte in layer.readBytes(16)) {
csv += "0x${byte.toRadixString(16)}, ";
}
print("BYTES CSV: ${csv}");
layer.resetPosition(); layer.resetPosition();
var msb = layer.readUnsignedLong(); var msb = layer.readUnsignedLong();
var lsb = layer.readUnsignedLong(); var lsb = layer.readUnsignedLong();
if (msb < 0) print("Most significant bit is negative! ${msb}");
if (lsb < 0) print("Least significant bit is negative! ${lsb}");
print("Forming UUID using MSB-LSB - ${msb} - ${lsb}");
layer.resetPosition(); layer.resetPosition();
return UUID.fromBytes(layer.readBytes(16));
return UUID(msb, lsb); return UUID(msb, lsb);
} }
case 4: case 4: