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comparison agent/src/share/classes/sun/jvm/hotspot/livejvm/CStringAccessor.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2002 Sun Microsystems, Inc. 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.livejvm;
26
27 import java.io.UnsupportedEncodingException;
28 import sun.jvm.hotspot.debugger.*;
29
30 class CStringAccessor {
31 private Address addr;
32 private int bufLen;
33
34 CStringAccessor(Address addr, int bufLen) {
35 this.addr = addr;
36 this.bufLen = bufLen;
37 }
38
39 String getValue() throws DebuggerException {
40 int len = 0;
41 while ((addr.getCIntegerAt(len, 1, true) != 0) && (len < bufLen)) {
42 ++len;
43 }
44 byte[] res = new byte[len];
45 for (int i = 0; i < len; i++) {
46 res[i] = (byte) addr.getCIntegerAt(i, 1, true);
47 }
48 try {
49 return new String(res, "US-ASCII");
50 } catch (UnsupportedEncodingException e) {
51 throw new DebuggerException("Unable to use US-ASCII encoding");
52 }
53 }
54
55 void setValue(String value) throws DebuggerException {
56 try {
57 byte[] data = value.getBytes("US-ASCII");
58 if (data.length >= bufLen) {
59 throw new DebuggerException("String too long");
60 }
61 for (int i = 0; i < data.length; i++) {
62 addr.setCIntegerAt(i, 1, data[i]);
63 }
64 addr.setCIntegerAt(data.length, 1, 0);
65 } catch (UnsupportedEncodingException e) {
66 throw new DebuggerException("Unable to use US-ASCII encoding");
67 }
68 }
69 }