1/*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17//#define LOG_NDEBUG 0
18#define LOG_TAG "hexdump"
19#include <utils/Log.h>
20
21#include "hexdump.h"
22
23#include "ADebug.h"
24#include "AString.h"
25
26#include <ctype.h>
27#include <stdint.h>
28#include <stdio.h>
29
30namespace android {
31
32void hexdump(const void *_data, size_t size) {
33    const uint8_t *data = (const uint8_t *)_data;
34
35    size_t offset = 0;
36    while (offset < size) {
37        AString line;
38
39        char tmp[32];
40        sprintf(tmp, "%08lx:  ", (unsigned long)offset);
41
42        line.append(tmp);
43
44        for (size_t i = 0; i < 16; ++i) {
45            if (i == 8) {
46                line.append(' ');
47            }
48            if (offset + i >= size) {
49                line.append("   ");
50            } else {
51                sprintf(tmp, "%02x ", data[offset + i]);
52                line.append(tmp);
53            }
54        }
55
56        line.append(' ');
57
58        for (size_t i = 0; i < 16; ++i) {
59            if (offset + i >= size) {
60                break;
61            }
62
63            if (isprint(data[offset + i])) {
64                line.append((char)data[offset + i]);
65            } else {
66                line.append('.');
67            }
68        }
69
70        ALOGI("%s", line.c_str());
71
72        offset += 16;
73    }
74}
75
76}  // namespace android
77
78