Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: 15626c56286b2cbef7e677213c36fb7fa9938cb0 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
/*******************************************************************************
 * Copyright (c) 2004, 2005 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.debug.internal.ui.views.memory.renderings;

import java.math.BigInteger;

import org.eclipse.debug.core.model.MemoryByte;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.debug.ui.IDebugUIConstants;

/**
 * Represent unsigned integer rendering
 */
public class UnsignedIntegerRendering extends AbstractIntegerRendering {

	/**
	 * @param memBlock
	 * @param renderingId
	 */
	public UnsignedIntegerRendering(String renderingId) {
		super(renderingId);
	}

	private String convertToString(byte[] byteArray, int columnSize, int endianess)
	{
		String ret;
		long result = 0;

		switch (columnSize) {
		case 1:
			result = byteArray[0];
			result &= 0xff;
			break;
		case 2:
			result = RenderingsUtil.convertByteArrayToInt(byteArray, endianess);
			break;
		case 4:
			result = RenderingsUtil.convertByteArrayToLong(byteArray, endianess);
			break;
		case 8:
			BigInteger value = RenderingsUtil.convertByteArrayToUnsignedLong(byteArray, endianess);
			return value.toString();
		case 16:
		{
			BigInteger bigRet = RenderingsUtil.convertByteArrayToUnsignedBigInt(byteArray, endianess);
			return bigRet.toString();
		}
		default:
		{
			BigInteger bigRet = RenderingsUtil.convertByteArrayToUnsignedBigInt(byteArray, endianess, columnSize);
			return bigRet.toString();
		}
		}

		ret = Long.valueOf(result).toString();

		return ret;
	}

	private byte[] convertToBytes(int colSize, String newValue, int endianess)
	{
		try {
			byte[] bytes;
			switch (colSize) {
			case 1:
			{
				short i = Short.parseShort(newValue);
				bytes = RenderingsUtil.convertShortToByteArray(i, endianess);
				bytes = extractBytes(bytes, endianess, colSize);
				break;
			}
			// unsigned integer
			case 2:
			{
				int i = Integer.parseInt(newValue);
				bytes = RenderingsUtil.convertIntToByteArray(i, endianess);
				bytes = extractBytes(bytes, endianess, colSize);
				break;
			}
			case 4:
			{
				long i = Long.parseLong(newValue);
				bytes = RenderingsUtil.convertLongToByteArray(i, endianess);
				bytes = extractBytes(bytes, endianess, colSize);
				break;
			}
			case 8:
			{
				BigInteger i = new BigInteger(newValue);
				bytes = RenderingsUtil.convertBigIntegerToByteArray(i, endianess);
				bytes = extractBytes(bytes, endianess, colSize);
				break;
			}
			case 16:
			{
				BigInteger i = new BigInteger(newValue);
				bytes = RenderingsUtil.convertUnsignedBigIntegerToByteArray(i, endianess);
				bytes = extractBytes(bytes, endianess, colSize);

				return bytes;
			}
			default:
			{
				BigInteger i = new BigInteger(newValue);
				bytes = RenderingsUtil.convertUnsignedBigIntToByteArray(i, endianess, colSize);
				bytes = extractBytes(bytes, endianess, colSize);
				return bytes;
			}
			}

			return bytes;
		} catch (NumberFormatException e) {
			throw e;
		}
	}

	@Override
	public String getString(String dataType, BigInteger address, MemoryByte[] data) {

		String paddedStr = DebugUIPlugin.getDefault().getPreferenceStore().getString(IDebugUIConstants.PREF_PADDED_STR);
		boolean invalid = false;
		for (int i=0; i<data.length; i++)
		{
			if (!data[i].isReadable())
			{
				invalid = true;
				break;
			}
		}

		if (invalid)
		{
			StringBuffer strBuf = new StringBuffer();
			for (int i=0; i<data.length; i++)
			{
				strBuf.append(paddedStr);
			}
			return strBuf.toString();
		}

		int columnSize = getBytesPerColumn();
		int endianess = getDisplayEndianess();
		if (endianess == RenderingsUtil.ENDIANESS_UNKNOWN) {
			endianess = getBytesEndianess(data);
		}

		byte[] byteArray = new byte[data.length];
		for (int i=0; i<byteArray.length;i ++)
		{
			byteArray[i] = data[i].getValue();
		}

		// if endianess is unknown, do not render, just return padded string
		if (RenderingsUtil.ENDIANESS_UNKNOWN == endianess)
		{
			StringBuffer strBuf = new StringBuffer();
			for (int i=0; i<byteArray.length; i++)
			{
				strBuf.append(paddedStr);
			}
			return strBuf.toString();
		}

		return convertToString(byteArray, columnSize, endianess);
	}

	@Override
	public byte[] getBytes(String dataType, BigInteger address, MemoryByte[] currentValues, String data) {

		int columnSize = getBytesPerColumn();
		int endianess = getDisplayEndianess();
		if (endianess == RenderingsUtil.ENDIANESS_UNKNOWN) {
			endianess = getBytesEndianess(currentValues);
		}

		// if endianess is unknown, do not try to render new data to bytes
		if (endianess == RenderingsUtil.ENDIANESS_UNKNOWN)
		{
			byte[] retBytes = new byte[currentValues.length];
			for (int i=0 ;i<currentValues.length; i++) {
				retBytes[i] = currentValues[i].getValue();
			}
			return retBytes;
		}

		return convertToBytes(columnSize, data, endianess);
	}

	private byte[] extractBytes(byte[] bytes, int endianess, int colSize) {

		if (colSize > bytes.length) {
			throw new NumberFormatException();
		}

		// take the least significant 'colSize' bytes out of the bytes array
		// if it's big endian, it's the last 'colSize' bytes
		if (endianess == RenderingsUtil.BIG_ENDIAN)
		{
			// check most significan bytes... if data has to be represented
			// using more than 'colSize' number of bytes, this
			// number is invalid, throw number format exception
			for (int i=0; i<colSize; i++)
			{
				if (bytes[i] != 0) {
					throw new NumberFormatException();
				}
			}

			byte[] copy = new byte[colSize];
			for (int j=0, k=bytes.length-colSize; j<copy.length && k<bytes.length; j++, k++)
			{
				copy[j] = bytes[k];
			}
			bytes = copy;
		}
		// if it's little endian, it's the first 'colSize' bytes
		else
		{
			// check most significan bytes... if data has to be represented
			// using more than 'colSize' number of bytes, this
			// number is invalid, throw number format exception
			for (int i=colSize; i<bytes.length; i++)
			{
				if (bytes[i] != 0) {
					throw new NumberFormatException();
				}
			}

			byte[] copy = new byte[colSize];
			for (int j=0; j<copy.length; j++)
			{
				copy[j] = bytes[j];
			}
			bytes = copy;
		}
		return bytes;
	}
}

Back to the top