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 30 namespace android { 31 32 static void appendIndent(AString *s, int32_t indent) { 33 static const char kWhitespace[] = 34 " " 35 " "; 36 37 CHECK_LT((size_t)indent, sizeof(kWhitespace)); 38 39 s->append(kWhitespace, indent); 40 } 41 42 void hexdump(const void *_data, size_t size, size_t indent, AString *appendTo) { 43 const uint8_t *data = (const uint8_t *)_data; 44 45 size_t offset = 0; 46 while (offset < size) { 47 AString line; 48 49 appendIndent(&line, indent); 50 51 char tmp[32]; 52 snprintf(tmp, sizeof(tmp), "%08lx: ", (unsigned long)offset); 53 54 line.append(tmp); 55 56 for (size_t i = 0; i < 16; ++i) { 57 if (i == 8) { 58 line.append(' '); 59 } 60 if (offset + i >= size) { 61 line.append(" "); 62 } else { 63 snprintf(tmp, sizeof(tmp), "%02x ", data[offset + i]); 64 line.append(tmp); 65 } 66 } 67 68 line.append(' '); 69 70 for (size_t i = 0; i < 16; ++i) { 71 if (offset + i >= size) { 72 break; 73 } 74 75 if (isprint(data[offset + i])) { 76 line.append((char)data[offset + i]); 77 } else { 78 line.append('.'); 79 } 80 } 81 82 if (appendTo != NULL) { 83 appendTo->append(line); 84 appendTo->append("\n"); 85 } else { 86 ALOGI("%s", line.c_str()); 87 } 88 89 offset += 16; 90 } 91 } 92 93 } // namespace android 94 95
