54 lines
2.2 KiB
Java
54 lines
2.2 KiB
Java
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package net.minecraft.network;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufUtil;
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import io.netty.handler.codec.DecoderException;
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import io.netty.handler.codec.EncoderException;
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import java.nio.charset.StandardCharsets;
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public class Utf8String {
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public static String read(ByteBuf p_300143_, int p_298419_) {
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int i = ByteBufUtil.utf8MaxBytes(p_298419_);
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int j = VarInt.read(p_300143_);
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if (j > i) {
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throw new DecoderException("The received encoded string buffer length is longer than maximum allowed (" + j + " > " + i + ")");
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} else if (j < 0) {
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throw new DecoderException("The received encoded string buffer length is less than zero! Weird string!");
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} else {
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int k = p_300143_.readableBytes();
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if (j > k) {
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throw new DecoderException("Not enough bytes in buffer, expected " + j + ", but got " + k);
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} else {
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String s = p_300143_.toString(p_300143_.readerIndex(), j, StandardCharsets.UTF_8);
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p_300143_.readerIndex(p_300143_.readerIndex() + j);
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if (s.length() > p_298419_) {
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throw new DecoderException("The received string length is longer than maximum allowed (" + s.length() + " > " + p_298419_ + ")");
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} else {
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return s;
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}
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}
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}
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}
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public static void write(ByteBuf p_299969_, CharSequence p_299580_, int p_298286_) {
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if (p_299580_.length() > p_298286_) {
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throw new EncoderException("String too big (was " + p_299580_.length() + " characters, max " + p_298286_ + ")");
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} else {
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int i = ByteBufUtil.utf8MaxBytes(p_299580_);
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ByteBuf bytebuf = p_299969_.alloc().buffer(i);
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try {
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int j = ByteBufUtil.writeUtf8(bytebuf, p_299580_);
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int k = ByteBufUtil.utf8MaxBytes(p_298286_);
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if (j > k) {
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throw new EncoderException("String too big (was " + j + " bytes encoded, max " + k + ")");
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}
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VarInt.write(p_299969_, j);
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p_299969_.writeBytes(bytebuf);
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} finally {
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bytebuf.release();
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}
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}
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}
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}
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