1/*
2 * Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 *
25 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC.
26 */
27
28package com.sun.xml.internal.fastinfoset.algorithm;
29
30import java.util.ArrayList;
31import java.util.List;
32import java.nio.CharBuffer;
33import com.sun.xml.internal.org.jvnet.fastinfoset.EncodingAlgorithmException;
34import com.sun.xml.internal.fastinfoset.CommonResourceBundle;
35
36public class UUIDEncodingAlgorithm extends LongEncodingAlgorithm {
37
38    public final int getPrimtiveLengthFromOctetLength(int octetLength) throws EncodingAlgorithmException {
39        if (octetLength % (LONG_SIZE * 2) != 0) {
40            throw new EncodingAlgorithmException(CommonResourceBundle.getInstance().
41                    getString("message.lengthNotMultipleOfUUID",new Object[]{Integer.valueOf(LONG_SIZE * 2)}));
42        }
43
44        return octetLength / LONG_SIZE;
45    }
46
47    public final Object convertFromCharacters(char[] ch, int start, int length) {
48        final CharBuffer cb = CharBuffer.wrap(ch, start, length);
49        final List longList = new ArrayList();
50
51        matchWhiteSpaceDelimnatedWords(cb,
52                new WordListener() {
53            public void word(int start, int end) {
54                String uuidValue = cb.subSequence(start, end).toString();
55                fromUUIDString(uuidValue);
56                longList.add(Long.valueOf(_msb));
57                longList.add(Long.valueOf(_lsb));
58            }
59        }
60        );
61
62        return generateArrayFromList(longList);
63    }
64
65    public final void convertToCharacters(Object data, StringBuffer s) {
66        if (!(data instanceof long[])) {
67            throw new IllegalArgumentException(CommonResourceBundle.getInstance().getString("message.dataNotLongArray"));
68        }
69
70        final long[] ldata = (long[])data;
71
72        final int end = ldata.length - 2;
73        for (int i = 0; i <= end; i += 2) {
74            s.append(toUUIDString(ldata[i], ldata[i + 1]));
75            if (i != end) {
76                s.append(' ');
77            }
78        }
79    }
80
81
82    private long _msb;
83    private long _lsb;
84
85    final void fromUUIDString(String name) {
86        String[] components = name.split("-");
87        if (components.length != 5)
88            throw new IllegalArgumentException(CommonResourceBundle.getInstance().
89                    getString("message.invalidUUID", new Object[]{name}));
90
91        for (int i=0; i<5; i++)
92            components[i] = "0x"+components[i];
93
94        _msb = Long.parseLong(components[0], 16);
95        _msb <<= 16;
96        _msb |= Long.parseLong(components[1], 16);
97        _msb <<= 16;
98        _msb |= Long.parseLong(components[2], 16);
99
100        _lsb = Long.parseLong(components[3], 16);
101        _lsb <<= 48;
102        _lsb |= Long.parseLong(components[4], 16);
103    }
104
105    final String toUUIDString(long msb, long lsb) {
106        return (digits(msb >> 32, 8) + "-" +
107                digits(msb >> 16, 4) + "-" +
108                digits(msb, 4) + "-" +
109                digits(lsb >> 48, 4) + "-" +
110                digits(lsb, 12));
111    }
112
113    final String digits(long val, int digits) {
114        long hi = 1L << (digits * 4);
115        return Long.toHexString(hi | (val & (hi - 1))).substring(1);
116    }
117
118}
119