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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2004, 2021 Oracle and/or its affiliates. All rights reserved.
*
* Oracle licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://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,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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 IntEncodingAlgorithm extends IntegerEncodingAlgorithm {
@Override
public final int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException {
if (octetLength % INT_SIZE != 0) {
throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().
getString("message.lengthNotMultipleOfInt", new Object[]{INT_SIZE}));
}
return octetLength / INT_SIZE;
}
@Override
public int getOctetLengthFromPrimitiveLength(int primitiveLength) {
return primitiveLength * INT_SIZE;
}
@Override
public final Object decodeFromBytes(byte[] b, int start, int length) throws EncodingAlgorithmException {
int[] data = new int[getPrimtiveLengthFromOctetLength(length)];
decodeFromBytesToIntArray(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 int[])) {
throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotIntArray"));
}
final int[] idata = (int[])data;
encodeToOutputStreamFromIntArray(idata, s);
}
@Override
public final Object convertFromCharacters(char[] ch, int start, int length) {
final CharBuffer cb = CharBuffer.wrap(ch, start, length);
final List integerList = new ArrayList<>();
matchWhiteSpaceDelimnatedWords(cb, (int start1, int end) -> {
String iStringValue = cb.subSequence(start1, end).toString();
integerList.add(Integer.valueOf(iStringValue));
});
return generateArrayFromList(integerList);
}
@Override
public final void convertToCharacters(Object data, StringBuffer s) {
if (!(data instanceof int[])) {
throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotIntArray"));
}
final int[] idata = (int[])data;
convertToCharactersFromIntArray(idata, s);
}
public final void decodeFromBytesToIntArray(int[] idata, int istart, byte[] b, int start, int length) {
final int size = length / INT_SIZE;
for (int i = 0; i < size; i++) {
idata[istart++] = ((b[start++] & 0xFF) << 24) |
((b[start++] & 0xFF) << 16) |
((b[start++] & 0xFF) << 8) |
(b[start++] & 0xFF);
}
}
public final int[] decodeFromInputStreamToIntArray(InputStream s) throws IOException {
final List integerList = new ArrayList<>();
final byte[] b = new byte[INT_SIZE];
while (true) {
int n = s.read(b);
if (n != 4) {
if (n == -1) {
break;
}
while(n != 4) {
final int m = s.read(b, n, INT_SIZE - n);
if (m == -1) {
throw new EOFException();
}
n += m;
}
}
final int i = ((b[0] & 0xFF) << 24) |
((b[1] & 0xFF) << 16) |
((b[2] & 0xFF) << 8) |
(b[3] & 0xFF);
integerList.add(i);
}
return generateArrayFromList(integerList);
}
public final void encodeToOutputStreamFromIntArray(int[] idata, OutputStream s) throws IOException {
for (int i = 0; i < idata.length; i++) {
final int bits = idata[i];
s.write((bits >>> 24) & 0xFF);
s.write((bits >>> 16) & 0xFF);
s.write((bits >>> 8) & 0xFF);
s.write(bits & 0xFF);
}
}
@Override
public final void encodeToBytes(Object array, int astart, int alength, byte[] b, int start) {
encodeToBytesFromIntArray((int[])array, astart, alength, b, start);
}
public final void encodeToBytesFromIntArray(int[] idata, int istart, int ilength, byte[] b, int start) {
final int iend = istart + ilength;
for (int i = istart; i < iend; i++) {
final int bits = idata[i];
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 convertToCharactersFromIntArray(int[] idata, StringBuffer s) {
final int end = idata.length - 1;
for (int i = 0; i <= end; i++) {
s.append(Integer.toString(idata[i]));
if (i != end) {
s.append(' ');
}
}
}
public final int[] generateArrayFromList(List array) {
int[] idata = new int[array.size()];
for (int i = 0; i < idata.length; i++) {
idata[i] = array.get(i);
}
return idata;
}
}
