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File size: 2,577 Bytes
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package net.minecraft.util;
import java.io.IOException;
import java.io.InputStream;
public class FastBufferedInputStream extends InputStream {
private static final int DEFAULT_BUFFER_SIZE = 8192;
private final InputStream in;
private final byte[] buffer;
private int limit;
private int position;
public FastBufferedInputStream(InputStream p_196566_) {
this(p_196566_, 8192);
}
public FastBufferedInputStream(InputStream p_196568_, int p_196569_) {
this.in = p_196568_;
this.buffer = new byte[p_196569_];
}
@Override
public int read() throws IOException {
if (this.position >= this.limit) {
this.fill();
if (this.position >= this.limit) {
return -1;
}
}
return Byte.toUnsignedInt(this.buffer[this.position++]);
}
@Override
public int read(byte[] p_196576_, int p_196577_, int p_196578_) throws IOException {
int i = this.bytesInBuffer();
if (i <= 0) {
if (p_196578_ >= this.buffer.length) {
return this.in.read(p_196576_, p_196577_, p_196578_);
}
this.fill();
i = this.bytesInBuffer();
if (i <= 0) {
return -1;
}
}
if (p_196578_ > i) {
p_196578_ = i;
}
System.arraycopy(this.buffer, this.position, p_196576_, p_196577_, p_196578_);
this.position += p_196578_;
return p_196578_;
}
@Override
public long skip(long p_196580_) throws IOException {
if (p_196580_ <= 0L) {
return 0L;
} else {
long i = (long)this.bytesInBuffer();
if (i <= 0L) {
return this.in.skip(p_196580_);
} else {
if (p_196580_ > i) {
p_196580_ = i;
}
this.position = (int)((long)this.position + p_196580_);
return p_196580_;
}
}
}
@Override
public int available() throws IOException {
return this.bytesInBuffer() + this.in.available();
}
@Override
public void close() throws IOException {
this.in.close();
}
private int bytesInBuffer() {
return this.limit - this.position;
}
private void fill() throws IOException {
this.limit = 0;
this.position = 0;
int i = this.in.read(this.buffer, 0, this.buffer.length);
if (i > 0) {
this.limit = i;
}
}
} |