1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation. Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24 /*
25 /*
26 ******************************************************************************
27 * Copyright (C) 2003, International Business Machines Corporation and *
28 * others. All Rights Reserved. *
29 ******************************************************************************
30 *
31 * Created on May 2, 2003
32 *
33 * To change the template for this generated file go to
34 * Window>Preferences>Java>Code Generation>Code and Comments
35 */
36 // CHANGELOG
37 // 2005-05-19 Edward Wang
38 // - copy this file from icu4jsrc_3_2/src/com/ibm/icu/impl/StringPrepDataReader.java
39 // - move from package com.ibm.icu.impl to package sun.net.idn
40 //
41 package sun.net.idn;
42
43 import java.io.DataInputStream;
44 import java.io.IOException;
45 import java.io.InputStream;
46
47 import sun.text.normalizer.ICUBinary;
48
49
50 /**
51 * @author ram
52 *
53 * To change the template for this generated type comment go to
54 * Window>Preferences>Java>Code Generation>Code and Comments
55 */
56 final class StringPrepDataReader implements ICUBinary.Authenticate {
57
58 /**
59 * <p>private constructor.</p>
60 * @param inputStream ICU uprop.dat file input stream
61 * @exception IOException throw if data file fails authentication
62 * @draft 2.1
63 */
64 public StringPrepDataReader(InputStream inputStream)
65 throws IOException{
66
67 unicodeVersion = ICUBinary.readHeader(inputStream, DATA_FORMAT_ID, this);
68
69
70 dataInputStream = new DataInputStream(inputStream);
71
72 }
73
74 public void read(byte[] idnaBytes,
75 char[] mappingTable)
76 throws IOException{
77
78 //Read the bytes that make up the idnaTrie
79 dataInputStream.read(idnaBytes);
80
81 //Read the extra data
82 for(int i=0;i<mappingTable.length;i++){
83 mappingTable[i]=dataInputStream.readChar();
84 }
85 }
86
87 public byte[] getDataFormatVersion(){
88 return DATA_FORMAT_VERSION;
89 }
90
91 public boolean isDataVersionAcceptable(byte version[]){
92 return version[0] == DATA_FORMAT_VERSION[0]
93 && version[2] == DATA_FORMAT_VERSION[2]
94 && version[3] == DATA_FORMAT_VERSION[3];
95 }
96 public int[] readIndexes(int length)throws IOException{
97 int[] indexes = new int[length];
98 //Read the indexes
99 for (int i = 0; i <length ; i++) {
100 indexes[i] = dataInputStream.readInt();
101 }
102 return indexes;
103 }
104
105 public byte[] getUnicodeVersion(){
106 return unicodeVersion;
107 }
108 // private data members -------------------------------------------------
109
110
111 /**
112 * ICU data file input stream
113 */
114 private DataInputStream dataInputStream;
115 private byte[] unicodeVersion;
116 /**
117 * File format version that this class understands.
118 * No guarantees are made if a older version is used
119 * see store.c of gennorm for more information and values
120 */
121 ///* dataFormat="SPRP" 0x53, 0x50, 0x52, 0x50 */
122 private static final byte DATA_FORMAT_ID[] = {(byte)0x53, (byte)0x50,
123 (byte)0x52, (byte)0x50};
124 private static final byte DATA_FORMAT_VERSION[] = {(byte)0x3, (byte)0x2,
125 (byte)0x5, (byte)0x2};
126
127 }