com.sun.xml.fastinfoset.algorithm.LongEncodingAlgorithm Maven / Gradle / Ivy
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* Copyright (c) 2004, 2023 Oracle and/or its affiliates. All rights reserved.
*
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* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
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* See the License for the specific language governing permissions and
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package com.sun.xml.fastinfoset.algorithm;
import java.io.EOFException;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.CharBuffer;
import java.util.ArrayList;
import java.util.List;
import org.jvnet.fastinfoset.EncodingAlgorithmException;
import com.sun.xml.fastinfoset.CommonResourceBundle;
public class LongEncodingAlgorithm extends IntegerEncodingAlgorithm {
public LongEncodingAlgorithm() {
}
@Override
public int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException {
if (octetLength % LONG_SIZE != 0) {
throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().
getString("message.lengthNotMultipleOfLong", new Object[]{LONG_SIZE}));
}
return octetLength / LONG_SIZE;
}
@Override
public int getOctetLengthFromPrimitiveLength(int primitiveLength) {
return primitiveLength * LONG_SIZE;
}
@Override
public final Object decodeFromBytes(byte[] b, int start, int length) throws EncodingAlgorithmException {
long[] data = new long[getPrimtiveLengthFromOctetLength(length)];
decodeFromBytesToLongArray(data, 0, b, start, length);
return data;
}
@Override
public final Object decodeFromInputStream(InputStream s) throws IOException {
return decodeFromInputStreamToIntArray(s);
}
@Override
public void encodeToOutputStream(Object data, OutputStream s) throws IOException {
if (!(data instanceof long[])) {
throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotLongArray"));
}
final long[] ldata = (long[])data;
encodeToOutputStreamFromLongArray(ldata, s);
}
@Override
public Object convertFromCharacters(char[] ch, int start, int length) {
final CharBuffer cb = CharBuffer.wrap(ch, start, length);
final List longList = new ArrayList<>();
matchWhiteSpaceDelimnatedWords(cb, (int start1, int end) -> {
String lStringValue = cb.subSequence(start1, end).toString();
longList.add(Long.valueOf(lStringValue));
});
return generateArrayFromList(longList);
}
@Override
public void convertToCharacters(Object data, StringBuilder s) {
if (!(data instanceof long[])) {
throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotLongArray"));
}
final long[] ldata = (long[])data;
convertToCharactersFromLongArray(ldata, s);
}
public final void decodeFromBytesToLongArray(long[] ldata, int istart, byte[] b, int start, int length) {
final int size = length / LONG_SIZE;
for (int i = 0; i < size; i++) {
ldata[istart++] =
((long)(b[start++] & 0xFF) << 56) |
((long)(b[start++] & 0xFF) << 48) |
((long)(b[start++] & 0xFF) << 40) |
((long)(b[start++] & 0xFF) << 32) |
((long)(b[start++] & 0xFF) << 24) |
((long)(b[start++] & 0xFF) << 16) |
((long)(b[start++] & 0xFF) << 8) |
(long)(b[start++] & 0xFF);
}
}
public final long[] decodeFromInputStreamToIntArray(InputStream s) throws IOException {
final List longList = new ArrayList<>();
final byte[] b = new byte[LONG_SIZE];
while (true) {
int n = s.read(b);
if (n != LONG_SIZE) {
if (n == -1) {
break;
}
while(n != LONG_SIZE) {
final int m = s.read(b, n, LONG_SIZE - n);
if (m == -1) {
throw new EOFException();
}
n += m;
}
}
final long l =
(((long) b[0] << 56) +
((long) (b[1] & 0xFF) << 48) +
((long) (b[2] & 0xFF) << 40) +
((long) (b[3] & 0xFF) << 32) +
((long) (b[4] & 0xFF) << 24) +
((b[5] & 0xFF) << 16) +
((b[6] & 0xFF) << 8) +
(b[7] & 0xFF));
longList.add(l);
}
return generateArrayFromList(longList);
}
public final void encodeToOutputStreamFromLongArray(long[] ldata, OutputStream s) throws IOException {
for (int i = 0; i < ldata.length; i++) {
final long bits = ldata[i];
s.write((int)((bits >>> 56) & 0xFF));
s.write((int)((bits >>> 48) & 0xFF));
s.write((int)((bits >>> 40) & 0xFF));
s.write((int)((bits >>> 32) & 0xFF));
s.write((int)((bits >>> 24) & 0xFF));
s.write((int)((bits >>> 16) & 0xFF));
s.write((int)((bits >>> 8) & 0xFF));
s.write((int)(bits & 0xFF));
}
}
@Override
public final void encodeToBytes(Object array, int astart, int alength, byte[] b, int start) {
encodeToBytesFromLongArray((long[])array, astart, alength, b, start);
}
public final void encodeToBytesFromLongArray(long[] ldata, int lstart, int llength, byte[] b, int start) {
final int lend = lstart + llength;
for (int i = lstart; i < lend; i++) {
final long bits = ldata[i];
b[start++] = (byte)((bits >>> 56) & 0xFF);
b[start++] = (byte)((bits >>> 48) & 0xFF);
b[start++] = (byte)((bits >>> 40) & 0xFF);
b[start++] = (byte)((bits >>> 32) & 0xFF);
b[start++] = (byte)((bits >>> 24) & 0xFF);
b[start++] = (byte)((bits >>> 16) & 0xFF);
b[start++] = (byte)((bits >>> 8) & 0xFF);
b[start++] = (byte)(bits & 0xFF);
}
}
public final void convertToCharactersFromLongArray(long[] ldata, StringBuilder s) {
final int end = ldata.length - 1;
for (int i = 0; i <= end; i++) {
s.append(ldata[i]);
if (i != end) {
s.append(' ');
}
}
}
/**
* @deprecated Use {@link #convertToCharactersFromLongArray(long[], StringBuilder)} instead.
*/
@Deprecated(since = "2.1.1", forRemoval = true)
public final void convertToCharactersFromLongArray(long[] ldata, StringBuffer s) {
convertToCharactersFromLongArray(ldata, new StringBuilder(s));
}
public final long[] generateArrayFromList(List array) {
long[] ldata = new long[array.size()];
for (int i = 0; i < ldata.length; i++) {
ldata[i] = array.get(i);
}
return ldata;
}
}
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