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Push unsigned read methods

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This commit is contained in:
zontreck 2024-05-07 14:18:35 -07:00
parent d4cf453005
commit f8918b9fcf
2 changed files with 41 additions and 12 deletions
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38
lib/nbt/Stream.dart
View file

@ -86,12 +86,24 @@ class ByteLayer {
_position++; _position++;
} }
void writeUnsignedByte(int value) {
_ensureCapacity(1);
_byteBuffer.buffer.asByteData().setUint8(_position, value);
_position++;
}
int readByte() { int readByte() {
final value = _byteBuffer[_position]; final value = _byteBuffer[_position];
_position++; _position++;
return value; return value;
} }
int readUnsignedByte() {
final value = _byteBuffer.buffer.asByteData().getUint8(_position);
_position++;
return value;
}
void writeVarInt(int value) { void writeVarInt(int value) {
while ((value & ~0x7F) != 0) { while ((value & ~0x7F) != 0) {
writeByte((value & 0x7F) | 0x80); writeByte((value & 0x7F) | 0x80);
@ -239,6 +251,13 @@ class ByteLayer {
return value; return value;
} }
int readUnsignedLong() {
final value =
_byteBuffer.buffer.asByteData().getUint64(_position, Endian.big);
_position += 8;
return value;
}
void writeVarLongNoZigZag(int value) { void writeVarLongNoZigZag(int value) {
while (true) { while (true) {
if ((value & ~0x7F) == 0) { if ((value & ~0x7F) == 0) {
@ -286,14 +305,14 @@ class ByteLayer {
void writeBytes(Iterable<int> bytes) { void writeBytes(Iterable<int> bytes) {
for (int byte in bytes) { for (int byte in bytes) {
writeByte(byte); writeUnsignedByte(byte);
} }
} }
List<int> readBytes(int num) { List<int> readBytes(int num) {
List<int> lst = []; List<int> lst = [];
for (int i = 0; i < num; i++) { for (int i = 0; i < num; i++) {
lst.add(readByte()); lst.add(readUnsignedByte());
} }
return lst; return lst;
@ -303,10 +322,10 @@ class ByteLayer {
if (position < _byteBuffer.length) { if (position < _byteBuffer.length) {
// Set the value now // Set the value now
seek(position); seek(position);
int current = readByte(); int current = readUnsignedByte();
seek(position); seek(position);
current |= maskToSet; current |= maskToSet;
writeByte(current); writeUnsignedByte(current);
} }
} }
@ -314,17 +333,17 @@ class ByteLayer {
if (position < _byteBuffer.length) { if (position < _byteBuffer.length) {
// Lets clear the bit // Lets clear the bit
seek(position); seek(position);
int current = readByte(); int current = readUnsignedByte();
current &= maskToClear; current &= maskToClear;
seek(position); seek(position);
writeByte(current); writeUnsignedByte(current);
} }
} }
bool checkBit(int position, int mask) { bool checkBit(int position, int mask) {
if (position < _byteBuffer.length) { if (position < _byteBuffer.length) {
seek(position); seek(position);
int current = readByte(); int current = readUnsignedByte();
return (current & mask) == mask; return (current & mask) == mask;
} else } else
return false; return false;
@ -333,9 +352,10 @@ class ByteLayer {
int getBit(int position) { int getBit(int position) {
if (position < _byteBuffer.length) { if (position < _byteBuffer.length) {
seek(position); seek(position);
return readByte(); return readUnsignedByte();
} else } else {
return 0; return 0;
}
} }
void seek(int position) { void seek(int position) {

15
lib/utils/uuid/UUID.dart
View file

@ -94,11 +94,20 @@ class UUID {
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(); layer.resetPosition();
return UUID(layer.readLong(), layer.readLong()); var msb = layer.readUnsignedLong();
var lsb = layer.readUnsignedLong();
if (msb < 0) print("Most significant bit is negative!");
if (lsb < 0) print("Least significant bit is negative!");
return UUID(msb, lsb);
} }
case 4: case 4:
{ {
@ -115,7 +124,7 @@ class UUID {
layer.resetPosition(); layer.resetPosition();
return UUID(layer.readLong(), layer.readLong()); return UUID(layer.readUnsignedLong(), layer.readUnsignedLong());
} }
case 5: case 5:
{ {
@ -145,7 +154,7 @@ class UUID {
layer.resetPosition(); layer.resetPosition();
return UUID(layer.readLong(), layer.readLong()); return UUID(layer.readUnsignedLong(), layer.readUnsignedLong());
} }
default: default:
throw ArgumentError('Unsupported UUID version: $version'); throw ArgumentError('Unsupported UUID version: $version');