1 /*
2 * Copyright (c) 2005, 2020, 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 /*
26 /*
27 ******************************************************************************
28 * Copyright (C) 2003, International Business Machines Corporation and *
29 * others. All Rights Reserved. *
30 ******************************************************************************
31 *
32 * Created on May 2, 2003
33 *
34 * To change the template for this generated file go to
35 * Window>Preferences>Java>Code Generation>Code and Comments
36 */
37 // CHANGELOG
38 // 2005-05-19 Edward Wang
39 // - copy this file from icu4jsrc_3_2/src/com/ibm/icu/impl/StringPrepDataReader.java
40 // - move from package com.ibm.icu.impl to package sun.net.idn
41 //
42 package jdk.internal.icu.impl;
43
44 import java.io.DataInputStream;
45 import java.io.IOException;
46 import java.io.InputStream;
47
48 import jdk.internal.icu.impl.ICUBinary;
49
50
51 /**
52 * @author ram
53 *
54 * To change the template for this generated type comment go to
55 * Window>Preferences>Java>Code Generation>Code and Comments
56 */
57 public final class StringPrepDataReader implements ICUBinary.Authenticate {
58
59 /**
60 * <p>private constructor.</p>
61 * @param inputStream ICU uprop.dat file input stream
62 * @exception IOException throw if data file fails authentication
63 * @draft 2.1
64 */
65 public StringPrepDataReader(InputStream inputStream)
66 throws IOException{
67
68 unicodeVersion = ICUBinary.readHeader(inputStream, DATA_FORMAT_ID, this);
69
70
71 dataInputStream = new DataInputStream(inputStream);
72
73 }
74
75 public void read(byte[] idnaBytes,
76 char[] mappingTable)
77 throws IOException{
78
79 //Read the bytes that make up the idnaTrie
80 dataInputStream.read(idnaBytes);
81
82 //Read the extra data
83 for(int i=0;i<mappingTable.length;i++){
84 mappingTable[i]=dataInputStream.readChar();
85 }
86 }
87
88 public byte[] getDataFormatVersion(){
89 return DATA_FORMAT_VERSION;
90 }
91
92 public boolean isDataVersionAcceptable(byte version[]){
93 return version[0] == DATA_FORMAT_VERSION[0]
94 && version[2] == DATA_FORMAT_VERSION[2]
95 && version[3] == DATA_FORMAT_VERSION[3];
96 }
97 public int[] readIndexes(int length)throws IOException{
98 int[] indexes = new int[length];
99 //Read the indexes
100 for (int i = 0; i <length ; i++) {
101 indexes[i] = dataInputStream.readInt();
102 }
103 return indexes;
104 }
105
106 public byte[] getUnicodeVersion(){
107 return unicodeVersion;
108 }
109 // private data members -------------------------------------------------
110
111
112 /**
113 * ICU data file input stream
114 */
115 private DataInputStream dataInputStream;
116 private byte[] unicodeVersion;
117 /**
118 * File format version that this class understands.
119 * No guarantees are made if a older version is used
120 * see store.c of gennorm for more information and values
121 */
122 ///* dataFormat="SPRP" 0x53, 0x50, 0x52, 0x50 */
123 private static final byte DATA_FORMAT_ID[] = {(byte)0x53, (byte)0x50,
124 (byte)0x52, (byte)0x50};
125 private static final byte DATA_FORMAT_VERSION[] = {(byte)0x3, (byte)0x2,
126 (byte)0x5, (byte)0x2};
127
128 }