1 /*
2  * Copyright (c) 1997, 2011, 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
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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
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24  */
25 
26 package com.sun.xml.internal.bind.v2.runtime.unmarshaller;
27 
28 import java.io.IOException;
29 
30 import com.sun.xml.internal.bind.v2.runtime.output.Pcdata;
31 import com.sun.xml.internal.bind.v2.runtime.output.UTF8XmlOutput;
32 
33 /**
34  * {@link Pcdata} that represents a single integer.
35  *
36  * @author Kohsuke Kawaguchi
37  */
38 public class IntData extends Pcdata {
39     /**
40      * The int value that this {@link Pcdata} represents.
41      *
42      * Modifiable.
43      */
44     private int data;
45 
46     /**
47      * Length of the {@link #data} in ASCII string.
48      * For example if data=-10, then length=3
49      */
50     private int length;
51 
reset(int i)52     public void reset(int i) {
53         this.data = i;
54         if(i==Integer.MIN_VALUE)
55             length = 11;
56         else
57             length = (i < 0) ? stringSizeOfInt(-i) + 1 : stringSizeOfInt(i);
58     }
59 
60     private final static int [] sizeTable = { 9, 99, 999, 9999, 99999, 999999, 9999999,
61                                      99999999, 999999999, Integer.MAX_VALUE };
62 
63     // Requires positive x
stringSizeOfInt(int x)64     private static int stringSizeOfInt(int x) {
65         for (int i=0; ; i++)
66             if (x <= sizeTable[i])
67                 return i+1;
68     }
69 
toString()70     public String toString() {
71         return String.valueOf(data);
72     }
73 
74 
length()75     public int length() {
76         return length;
77     }
78 
charAt(int index)79     public char charAt(int index) {
80         return toString().charAt(index);
81     }
82 
subSequence(int start, int end)83     public CharSequence subSequence(int start, int end) {
84         return toString().substring(start,end);
85     }
86 
writeTo(UTF8XmlOutput output)87     public void writeTo(UTF8XmlOutput output) throws IOException {
88         output.text(data);
89     }
90 }
91