andreacavalli/data-generator
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Optimization

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This commit is contained in:
Andrea Cavalli 2023-03-27 23:30:34 +02:00
parent bc34559de0
commit 9da2c8f5d9
1 changed files with 12 additions and 18 deletions
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30
data-generator-runtime/src/main/java/it/cavallium/stream/SafeDataInputStream.java
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@ -25,10 +25,6 @@
package it.cavallium.stream;
import java.nio.ByteBuffer;
import java.nio.charset.CharacterCodingException;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CodingErrorAction;
import java.nio.charset.StandardCharsets;
import org.jetbrains.annotations.NotNull;
@ -45,11 +41,9 @@ public class SafeDataInputStream extends SafeFilterInputStream implements SafeDa
}
/**
* working arrays initialized on demand by readUTF
* working data initialized on demand by readUTF
*/
private byte[] bytearr;
private char[] chararr;
private CharsetDecoder utfdec;
@Override
public final int read(byte[] b) {
@ -454,18 +448,18 @@ public class SafeDataInputStream extends SafeFilterInputStream implements SafeDa
* @see SafeDataInputStream#readUnsignedShort()
*/
public static String readUTF(SafeDataInputStream in) {
if (in.bytearr == null) in.bytearr = new byte[80];
if (in.chararr == null) in.chararr = new char[80];
if (in.utfdec == null) in.utfdec = StandardCharsets.UTF_8.newDecoder()
.onUnmappableCharacter(CodingErrorAction.REPORT)
.onMalformedInput(CodingErrorAction.REPORT);
int utflen = in.readUnsignedShort();
var data = new byte[utflen];
in.readFully(data);
try {
return in.utfdec.reset().decode(ByteBuffer.wrap(data)).toString();
} catch (CharacterCodingException e) {
throw new IllegalArgumentException("malformed input string", e);
byte[] data;
if (utflen <= 80) {
if (in.bytearr == null) {
data = in.bytearr = new byte[80];
} else {
data = in.bytearr;
}
} else {
data = new byte[utflen];
}
in.readFully(data, 0, utflen);
return new String(data, StandardCharsets.UTF_8);
}
}