src/share/jaxws_classes/com/sun/xml/internal/fastinfoset/algorithm/BooleanEncodingAlgorithm.java

Thu, 31 Aug 2017 15:18:52 +0800

author
aoqi
date
Thu, 31 Aug 2017 15:18:52 +0800
changeset 637
9c07ef4934dd
parent 384
8f2986ff0235
parent 0
373ffda63c9a
permissions
-rw-r--r--

merge

aoqi@0 1 /*
aoqi@0 2 * Copyright (c) 2004, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0 4 *
aoqi@0 5 * This code is free software; you can redistribute it and/or modify it
aoqi@0 6 * under the terms of the GNU General Public License version 2 only, as
aoqi@0 7 * published by the Free Software Foundation. Oracle designates this
aoqi@0 8 * particular file as subject to the "Classpath" exception as provided
aoqi@0 9 * by Oracle in the LICENSE file that accompanied this code.
aoqi@0 10 *
aoqi@0 11 * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0 14 * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0 15 * accompanied this code).
aoqi@0 16 *
aoqi@0 17 * You should have received a copy of the GNU General Public License version
aoqi@0 18 * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0 20 *
aoqi@0 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0 22 * or visit www.oracle.com if you need additional information or have any
aoqi@0 23 * questions.
aoqi@0 24 *
aoqi@0 25 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC.
aoqi@0 26 */
aoqi@0 27
aoqi@0 28 package com.sun.xml.internal.fastinfoset.algorithm;
aoqi@0 29
aoqi@0 30
aoqi@0 31 import java.io.EOFException;
aoqi@0 32 import java.io.IOException;
aoqi@0 33 import java.io.InputStream;
aoqi@0 34 import java.io.OutputStream;
aoqi@0 35 import java.nio.CharBuffer;
aoqi@0 36 import java.util.ArrayList;
aoqi@0 37 import java.util.List;
aoqi@0 38
aoqi@0 39 import com.sun.xml.internal.org.jvnet.fastinfoset.EncodingAlgorithmException;
aoqi@0 40 import com.sun.xml.internal.fastinfoset.CommonResourceBundle;
aoqi@0 41
aoqi@0 42
aoqi@0 43 /**
aoqi@0 44 *
aoqi@0 45 * An encoder for handling boolean values. Suppports the builtin BOOLEAN encoder.
aoqi@0 46 *
aoqi@0 47 * @author Alan Hudson
aoqi@0 48 * @author Paul Sandoz
aoqi@0 49 *
aoqi@0 50 */
aoqi@0 51 public class BooleanEncodingAlgorithm extends BuiltInEncodingAlgorithm {
aoqi@0 52
aoqi@0 53 /** Table for setting a particular bit of a byte */
aoqi@0 54 private static final int[] BIT_TABLE = {
aoqi@0 55 1 << 7,
aoqi@0 56 1 << 6,
aoqi@0 57 1 << 5,
aoqi@0 58 1 << 4,
aoqi@0 59 1 << 3,
aoqi@0 60 1 << 2,
aoqi@0 61 1 << 1,
aoqi@0 62 1 << 0};
aoqi@0 63
aoqi@0 64 public int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException {
aoqi@0 65 // Cannot determine the number of boolean values from just the octet length
aoqi@0 66 throw new UnsupportedOperationException();
aoqi@0 67 }
aoqi@0 68
aoqi@0 69 public int getOctetLengthFromPrimitiveLength(int primitiveLength) {
aoqi@0 70 if (primitiveLength < 5) {
aoqi@0 71 return 1;
aoqi@0 72 } else {
aoqi@0 73 final int div = primitiveLength / 8;
aoqi@0 74 return (div == 0) ? 2 : 1 + div;
aoqi@0 75 }
aoqi@0 76 }
aoqi@0 77
aoqi@0 78 public final Object decodeFromBytes(byte[] b, int start, int length) throws EncodingAlgorithmException {
aoqi@0 79 final int blength = getPrimtiveLengthFromOctetLength(length, b[start]);
aoqi@0 80 boolean[] data = new boolean[blength];
aoqi@0 81
aoqi@0 82 decodeFromBytesToBooleanArray(data, 0, blength, b, start, length);
aoqi@0 83 return data;
aoqi@0 84 }
aoqi@0 85
aoqi@0 86 public final Object decodeFromInputStream(InputStream s) throws IOException {
aoqi@0 87 final List booleanList = new ArrayList();
aoqi@0 88
aoqi@0 89 int value = s.read();
aoqi@0 90 if (value == -1) {
aoqi@0 91 throw new EOFException();
aoqi@0 92 }
aoqi@0 93 final int unusedBits = (value >> 4) & 0xFF;
aoqi@0 94
aoqi@0 95 int bitPosition = 4;
aoqi@0 96 int bitPositionEnd = 8;
aoqi@0 97 int valueNext = 0;
aoqi@0 98 do {
aoqi@0 99 valueNext = s.read();
aoqi@0 100 if (valueNext == -1) {
aoqi@0 101 bitPositionEnd -= unusedBits;
aoqi@0 102 }
aoqi@0 103
aoqi@0 104 while(bitPosition < bitPositionEnd) {
aoqi@0 105 booleanList.add(
aoqi@0 106 Boolean.valueOf((value & BIT_TABLE[bitPosition++]) > 0));
aoqi@0 107 }
aoqi@0 108
aoqi@0 109 value = valueNext;
aoqi@0 110 } while (value != -1);
aoqi@0 111
aoqi@0 112 return generateArrayFromList(booleanList);
aoqi@0 113 }
aoqi@0 114
aoqi@0 115 public void encodeToOutputStream(Object data, OutputStream s) throws IOException {
aoqi@0 116 if (!(data instanceof boolean[])) {
aoqi@0 117 throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotBoolean"));
aoqi@0 118 }
aoqi@0 119
aoqi@0 120 boolean array[] = (boolean[])data;
aoqi@0 121 final int alength = array.length;
aoqi@0 122
aoqi@0 123 final int mod = (alength + 4) % 8;
aoqi@0 124 final int unusedBits = (mod == 0) ? 0 : 8 - mod;
aoqi@0 125
aoqi@0 126 int bitPosition = 4;
aoqi@0 127 int value = unusedBits << 4;
aoqi@0 128 int astart = 0;
aoqi@0 129 while (astart < alength) {
aoqi@0 130 if (array[astart++]) {
aoqi@0 131 value |= BIT_TABLE[bitPosition];
aoqi@0 132 }
aoqi@0 133
aoqi@0 134 if (++bitPosition == 8) {
aoqi@0 135 s.write(value);
aoqi@0 136 bitPosition = value = 0;
aoqi@0 137 }
aoqi@0 138 }
aoqi@0 139
aoqi@0 140 if (bitPosition != 8) {
aoqi@0 141 s.write(value);
aoqi@0 142 }
aoqi@0 143 }
aoqi@0 144
aoqi@0 145 public final Object convertFromCharacters(char[] ch, int start, int length) {
aoqi@0 146 if (length == 0) {
aoqi@0 147 return new boolean[0];
aoqi@0 148 }
aoqi@0 149
aoqi@0 150 final CharBuffer cb = CharBuffer.wrap(ch, start, length);
aoqi@0 151 final List booleanList = new ArrayList();
aoqi@0 152
aoqi@0 153 matchWhiteSpaceDelimnatedWords(cb,
aoqi@0 154 new WordListener() {
aoqi@0 155 public void word(int start, int end) {
aoqi@0 156 if (cb.charAt(start) == 't') {
aoqi@0 157 booleanList.add(Boolean.TRUE);
aoqi@0 158 } else {
aoqi@0 159 booleanList.add(Boolean.FALSE);
aoqi@0 160 }
aoqi@0 161 }
aoqi@0 162 }
aoqi@0 163 );
aoqi@0 164
aoqi@0 165 return generateArrayFromList(booleanList);
aoqi@0 166 }
aoqi@0 167
aoqi@0 168 public final void convertToCharacters(Object data, StringBuffer s) {
aoqi@0 169 if (data == null) {
aoqi@0 170 return;
aoqi@0 171 }
aoqi@0 172
aoqi@0 173 final boolean[] value = (boolean[]) data;
aoqi@0 174 if (value.length == 0) {
aoqi@0 175 return;
aoqi@0 176 }
aoqi@0 177
aoqi@0 178 // Insure conservately as all false
aoqi@0 179 s.ensureCapacity(value.length * 5);
aoqi@0 180
aoqi@0 181 final int end = value.length - 1;
aoqi@0 182 for (int i = 0; i <= end; i++) {
aoqi@0 183 if (value[i]) {
aoqi@0 184 s.append("true");
aoqi@0 185 } else {
aoqi@0 186 s.append("false");
aoqi@0 187 }
aoqi@0 188 if (i != end) {
aoqi@0 189 s.append(' ');
aoqi@0 190 }
aoqi@0 191 }
aoqi@0 192 }
aoqi@0 193
aoqi@0 194 public int getPrimtiveLengthFromOctetLength(int octetLength, int firstOctet) throws EncodingAlgorithmException {
aoqi@0 195 final int unusedBits = (firstOctet >> 4) & 0xFF;
aoqi@0 196 if (octetLength == 1) {
aoqi@0 197 if (unusedBits > 3) {
aoqi@0 198 throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().getString("message.unusedBits4"));
aoqi@0 199 }
aoqi@0 200 return 4 - unusedBits;
aoqi@0 201 } else {
aoqi@0 202 if (unusedBits > 7) {
aoqi@0 203 throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().getString("message.unusedBits8"));
aoqi@0 204 }
aoqi@0 205 return octetLength * 8 - 4 - unusedBits;
aoqi@0 206 }
aoqi@0 207 }
aoqi@0 208
aoqi@0 209 public final void decodeFromBytesToBooleanArray(boolean[] bdata, int bstart, int blength, byte[] b, int start, int length) {
aoqi@0 210 int value = b[start++] & 0xFF;
aoqi@0 211 int bitPosition = 4;
aoqi@0 212 final int bend = bstart + blength;
aoqi@0 213 while (bstart < bend) {
aoqi@0 214 if (bitPosition == 8) {
aoqi@0 215 value = b[start++] & 0xFF;
aoqi@0 216 bitPosition = 0;
aoqi@0 217 }
aoqi@0 218
aoqi@0 219 bdata[bstart++] = (value & BIT_TABLE[bitPosition++]) > 0;
aoqi@0 220 }
aoqi@0 221 }
aoqi@0 222
aoqi@0 223 public void encodeToBytes(Object array, int astart, int alength, byte[] b, int start) {
aoqi@0 224 if (!(array instanceof boolean[])) {
aoqi@0 225 throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotBoolean"));
aoqi@0 226 }
aoqi@0 227
aoqi@0 228 encodeToBytesFromBooleanArray((boolean[])array, astart, alength, b, start);
aoqi@0 229 }
aoqi@0 230
aoqi@0 231 public void encodeToBytesFromBooleanArray(boolean[] array, int astart, int alength, byte[] b, int start) {
aoqi@0 232 final int mod = (alength + 4) % 8;
aoqi@0 233 final int unusedBits = (mod == 0) ? 0 : 8 - mod;
aoqi@0 234
aoqi@0 235 int bitPosition = 4;
aoqi@0 236 int value = unusedBits << 4;
aoqi@0 237 final int aend = astart + alength;
aoqi@0 238 while (astart < aend) {
aoqi@0 239 if (array[astart++]) {
aoqi@0 240 value |= BIT_TABLE[bitPosition];
aoqi@0 241 }
aoqi@0 242
aoqi@0 243 if (++bitPosition == 8) {
aoqi@0 244 b[start++] = (byte)value;
aoqi@0 245 bitPosition = value = 0;
aoqi@0 246 }
aoqi@0 247 }
aoqi@0 248
aoqi@0 249 if (bitPosition > 0) {
aoqi@0 250 b[start] = (byte)value;
aoqi@0 251 }
aoqi@0 252 }
aoqi@0 253
aoqi@0 254
aoqi@0 255 /**
aoqi@0 256 *
aoqi@0 257 * Generate a boolean array from a list of Booleans.
aoqi@0 258 *
aoqi@0 259 * @param array The array
aoqi@0 260 *
aoqi@0 261 */
aoqi@0 262 private boolean[] generateArrayFromList(List array) {
aoqi@0 263 boolean[] bdata = new boolean[array.size()];
aoqi@0 264 for (int i = 0; i < bdata.length; i++) {
aoqi@0 265 bdata[i] = ((Boolean)array.get(i)).booleanValue();
aoqi@0 266 }
aoqi@0 267
aoqi@0 268 return bdata;
aoqi@0 269 }
aoqi@0 270
aoqi@0 271 }

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