| /* |
| * Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC. |
| */ |
| |
| package com.sun.xml.internal.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 com.sun.xml.internal.org.jvnet.fastinfoset.EncodingAlgorithmException; |
| import com.sun.xml.internal.fastinfoset.CommonResourceBundle; |
| |
| |
| |
| public class FloatEncodingAlgorithm extends IEEE754FloatingPointEncodingAlgorithm { |
| |
| public final int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException { |
| if (octetLength % FLOAT_SIZE != 0) { |
| throw new EncodingAlgorithmException(CommonResourceBundle.getInstance(). |
| getString("message.lengthNotMultipleOfFloat", new Object[]{Integer.valueOf(FLOAT_SIZE)})); |
| } |
| |
| return octetLength / FLOAT_SIZE; |
| } |
| |
| public int getOctetLengthFromPrimitiveLength(int primitiveLength) { |
| return primitiveLength * FLOAT_SIZE; |
| } |
| |
| public final Object decodeFromBytes(byte[] b, int start, int length) throws EncodingAlgorithmException { |
| float[] data = new float[getPrimtiveLengthFromOctetLength(length)]; |
| decodeFromBytesToFloatArray(data, 0, b, start, length); |
| |
| return data; |
| } |
| |
| public final Object decodeFromInputStream(InputStream s) throws IOException { |
| return decodeFromInputStreamToFloatArray(s); |
| } |
| |
| |
| public void encodeToOutputStream(Object data, OutputStream s) throws IOException { |
| if (!(data instanceof float[])) { |
| throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotFloat")); |
| } |
| |
| final float[] fdata = (float[])data; |
| |
| encodeToOutputStreamFromFloatArray(fdata, s); |
| } |
| |
| public final Object convertFromCharacters(char[] ch, int start, int length) { |
| final CharBuffer cb = CharBuffer.wrap(ch, start, length); |
| final List floatList = new ArrayList(); |
| |
| matchWhiteSpaceDelimnatedWords(cb, |
| new WordListener() { |
| public void word(int start, int end) { |
| String fStringValue = cb.subSequence(start, end).toString(); |
| floatList.add(Float.valueOf(fStringValue)); |
| } |
| } |
| ); |
| |
| return generateArrayFromList(floatList); |
| } |
| |
| public final void convertToCharacters(Object data, StringBuffer s) { |
| if (!(data instanceof float[])) { |
| throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotFloat")); |
| } |
| |
| final float[] fdata = (float[])data; |
| |
| convertToCharactersFromFloatArray(fdata, s); |
| } |
| |
| |
| public final void decodeFromBytesToFloatArray(float[] data, int fstart, byte[] b, int start, int length) { |
| final int size = length / FLOAT_SIZE; |
| for (int i = 0; i < size; i++) { |
| final int bits = ((b[start++] & 0xFF) << 24) | |
| ((b[start++] & 0xFF) << 16) | |
| ((b[start++] & 0xFF) << 8) | |
| (b[start++] & 0xFF); |
| data[fstart++] = Float.intBitsToFloat(bits); |
| } |
| } |
| |
| public final float[] decodeFromInputStreamToFloatArray(InputStream s) throws IOException { |
| final List floatList = new ArrayList(); |
| final byte[] b = new byte[FLOAT_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, FLOAT_SIZE - n); |
| if (m == -1) { |
| throw new EOFException(); |
| } |
| n += m; |
| } |
| } |
| |
| final int bits = ((b[0] & 0xFF) << 24) | |
| ((b[1] & 0xFF) << 16) | |
| ((b[2] & 0xFF) << 8) | |
| (b[3] & 0xFF); |
| floatList.add(Float.valueOf(Float.intBitsToFloat(bits))); |
| } |
| |
| return generateArrayFromList(floatList); |
| } |
| |
| |
| public final void encodeToOutputStreamFromFloatArray(float[] fdata, OutputStream s) throws IOException { |
| for (int i = 0; i < fdata.length; i++) { |
| final int bits = Float.floatToIntBits(fdata[i]); |
| s.write((bits >>> 24) & 0xFF); |
| s.write((bits >>> 16) & 0xFF); |
| s.write((bits >>> 8) & 0xFF); |
| s.write(bits & 0xFF); |
| } |
| } |
| |
| public final void encodeToBytes(Object array, int astart, int alength, byte[] b, int start) { |
| encodeToBytesFromFloatArray((float[])array, astart, alength, b, start); |
| } |
| |
| public final void encodeToBytesFromFloatArray(float[] fdata, int fstart, int flength, byte[] b, int start) { |
| final int fend = fstart + flength; |
| for (int i = fstart; i < fend; i++) { |
| final int bits = Float.floatToIntBits(fdata[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 convertToCharactersFromFloatArray(float[] fdata, StringBuffer s) { |
| final int end = fdata.length - 1; |
| for (int i = 0; i <= end; i++) { |
| s.append(Float.toString(fdata[i])); |
| if (i != end) { |
| s.append(' '); |
| } |
| } |
| } |
| |
| |
| public final float[] generateArrayFromList(List array) { |
| float[] fdata = new float[array.size()]; |
| for (int i = 0; i < fdata.length; i++) { |
| fdata[i] = ((Float)array.get(i)).floatValue(); |
| } |
| |
| return fdata; |
| } |
| |
| } |