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1 /*
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2 * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.livejvm;
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26
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27 import java.io.UnsupportedEncodingException;
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28 import sun.jvm.hotspot.debugger.*;
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29
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30 class CStringAccessor {
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31 private Address addr;
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32 private int bufLen;
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33
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34 CStringAccessor(Address addr, int bufLen) {
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35 this.addr = addr;
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36 this.bufLen = bufLen;
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37 }
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38
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39 String getValue() throws DebuggerException {
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40 int len = 0;
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41 while ((addr.getCIntegerAt(len, 1, true) != 0) && (len < bufLen)) {
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42 ++len;
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43 }
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44 byte[] res = new byte[len];
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45 for (int i = 0; i < len; i++) {
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46 res[i] = (byte) addr.getCIntegerAt(i, 1, true);
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47 }
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48 try {
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49 return new String(res, "US-ASCII");
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50 } catch (UnsupportedEncodingException e) {
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51 throw new DebuggerException("Unable to use US-ASCII encoding");
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52 }
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53 }
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54
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55 void setValue(String value) throws DebuggerException {
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56 try {
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57 byte[] data = value.getBytes("US-ASCII");
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58 if (data.length >= bufLen) {
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59 throw new DebuggerException("String too long");
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60 }
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61 for (int i = 0; i < data.length; i++) {
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62 addr.setCIntegerAt(i, 1, data[i]);
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63 }
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64 addr.setCIntegerAt(data.length, 1, 0);
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65 } catch (UnsupportedEncodingException e) {
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66 throw new DebuggerException("Unable to use US-ASCII encoding");
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67 }
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68 }
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69 }
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