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Java > Open Source Codes > net > sf > retrotranslator > runtime > java > lang > _String


1 /***
2  * Retrotranslator: a Java bytecode transformer that translates Java classes
3  * compiled with JDK 5.0 into classes that can be run on JVM 1.4.
4  *
5  * Copyright (c) 2005 - 2007 Taras Puchko
6  * All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in the
15  * documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the copyright holders nor the names of its
17  * contributors may be used to endorse or promote products derived from
18  * this software without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30  * THE POSSIBILITY OF SUCH DAMAGE.
31  */
32 package net.sf.retrotranslator.runtime.java.lang;
33
34 import java.util.*;
35
36 /**
37  * @author Taras Puchko
38  */
39 public class _String {
40
41     public static String JavaDoc convertConstructorArguments(int[] codePoints, int offset, int count) {
42         if (offset < 0) {
43             throw new StringIndexOutOfBoundsException JavaDoc(offset);
44         }
45         if (count < 0) {
46             throw new StringIndexOutOfBoundsException JavaDoc(count);
47         }
48         if (offset + count > codePoints.length || offset + count < offset) {
49             throw new StringIndexOutOfBoundsException JavaDoc(offset + count);
50         }
51         char[] chars = new char[count * 2 >= 0 ? count * 2 : Integer.MAX_VALUE];
52         int index = 0;
53         for (int i = 0; i < count; i++) {
54             index += _Character.toChars(codePoints[offset + i], chars, index);
55         }
56         return new String JavaDoc(chars, 0, index);
57     }
58
59     public static int codePointAt(String JavaDoc s, int index) {
60         return _Character.codePointAt(s, index);
61     }
62
63     public static int codePointBefore(String JavaDoc s, int index) {
64         return _Character.codePointBefore(s, index);
65     }
66
67     public static int codePointCount(String JavaDoc s, int beginIndex, int endIndex) {
68         return _Character.codePointCount(s, beginIndex, endIndex);
69     }
70
71     public static boolean contains(String JavaDoc s, CharSequence JavaDoc cs) {
72         return s.indexOf(cs.toString()) >= 0;
73     }
74
75     public static boolean contentEquals(String JavaDoc s, CharSequence JavaDoc cs) {
76         return s.length() == cs.length() && s.equals(cs.toString());
77     }
78
79     public static String JavaDoc format(String JavaDoc format, Object JavaDoc... args) {
80         return new Formatter().format(format, args).toString();
81     }
82
83     public static String JavaDoc format(Locale locale, String JavaDoc format, Object JavaDoc... args) {
84         return new Formatter(locale).format(format, args).toString();
85     }
86
87     public static int offsetByCodePoints(String JavaDoc s, int index, int codePointOffset) {
88         return _Character.offsetByCodePoints(s, index, codePointOffset);
89     }
90
91     public static String JavaDoc replace(String JavaDoc s, CharSequence JavaDoc target, CharSequence JavaDoc replacement) {
92         String JavaDoc pattern = target.toString();
93         int patternIndex = s.indexOf(pattern);
94         if (patternIndex < 0) return s;
95         if (pattern.length() > 0) {
96             StringBuilder JavaDoc builder = new StringBuilder JavaDoc();
97             int startIndex = 0;
98             do {
99                 builder.append(s.substring(startIndex, patternIndex)).append(replacement);
100                 startIndex = patternIndex + pattern.length();
101                 patternIndex = s.indexOf(pattern, startIndex);
102             } while (patternIndex >= 0);
103             return builder.append(s.substring(startIndex)).toString();
104         } else {
105             StringBuilder JavaDoc builder = new StringBuilder JavaDoc();
106             for (int i = 0; i < s.length(); i++) {
107                 builder.append(replacement).append(s.charAt(i));
108             }
109             return builder.append(replacement).toString();
110         }
111     }
112
113     /**
114      * @since JDK 1.6
115      */
116     public static boolean isEmpty(String JavaDoc s) {
117         return s.length() == 0;
118     }
119
120 }
121
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