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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).
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17  * You should have received a copy of the GNU General Public License version
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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25 
26 /*
27  *******************************************************************************
28  * (C) Copyright IBM Corp. 1996-2005 - All Rights Reserved                     *
29  *                                                                             *
30  * The original version of this source code and documentation is copyrighted   *
31  * and owned by IBM, These materials are provided under terms of a License     *
32  * Agreement between IBM and Sun. This technology is protected by multiple     *
33  * US and International patents. This notice and attribution to IBM may not    *
34  * to removed.                                                                 *
35  *******************************************************************************
36  */
37 
38 package sun.text.normalizer;
39 
40 /**
41  * <code>ReplaceableString</code> is an adapter class that implements the
42  * <code>Replaceable</code> API around an ordinary <code>StringBuffer</code>.
43  *
44  * <p><em>Note:</em> This class does not support attributes and is not
45  * intended for general use.  Most clients will need to implement
46  * {@link Replaceable} in their text representation class.
47  *
48  * <p>Copyright &copy; IBM Corporation 1999.  All rights reserved.
49  *
50  * @see Replaceable
51  * @author Alan Liu
52  * @stable ICU 2.0
53  */
54 public class ReplaceableString implements Replaceable {
55 
56     private StringBuffer buf;
57 
58     /**
59      * Construct a new object with the given initial contents.
60      * @param str initial contents
61      * @stable ICU 2.0
62      */
ReplaceableString(String str)63     public ReplaceableString(String str) {
64         buf = new StringBuffer(str);
65     }
66 
67     //// for StringPrep
68     /**
69      * Construct a new object using <code>buf</code> for internal
70      * storage.  The contents of <code>buf</code> at the time of
71      * construction are used as the initial contents.  <em>Note!
72      * Modifications to <code>buf</code> will modify this object, and
73      * vice versa.</em>
74      * @param buf object to be used as internal storage
75      * @stable ICU 2.0
76      */
ReplaceableString(StringBuffer buf)77     public ReplaceableString(StringBuffer buf) {
78         this.buf = buf;
79     }
80 
81     /**
82      * Return the number of characters contained in this object.
83      * <code>Replaceable</code> API.
84      * @stable ICU 2.0
85      */
length()86     public int length() {
87         return buf.length();
88     }
89 
90     /**
91      * Return the character at the given position in this object.
92      * <code>Replaceable</code> API.
93      * @param offset offset into the contents, from 0 to
94      * <code>length()</code> - 1
95      * @stable ICU 2.0
96      */
charAt(int offset)97     public char charAt(int offset) {
98         return buf.charAt(offset);
99     }
100 
101     //// for StringPrep
102     /**
103      * Copies characters from this object into the destination
104      * character array.  The first character to be copied is at index
105      * <code>srcStart</code>; the last character to be copied is at
106      * index <code>srcLimit-1</code> (thus the total number of
107      * characters to be copied is <code>srcLimit-srcStart</code>). The
108      * characters are copied into the subarray of <code>dst</code>
109      * starting at index <code>dstStart</code> and ending at index
110      * <code>dstStart + (srcLimit-srcStart) - 1</code>.
111      *
112      * @param srcStart the beginning index to copy, inclusive; <code>0
113      * <= start <= limit</code>.
114      * @param srcLimit the ending index to copy, exclusive;
115      * <code>start <= limit <= length()</code>.
116      * @param dst the destination array.
117      * @param dstStart the start offset in the destination array.
118      * @stable ICU 2.0
119      */
getChars(int srcStart, int srcLimit, char dst[], int dstStart)120     public void getChars(int srcStart, int srcLimit, char dst[], int dstStart) {
121         Utility.getChars(buf, srcStart, srcLimit, dst, dstStart);
122     }
123 }
124