| 44 | #include <stdio.h> |
| 45 | |
| 46 | void |
| 47 | hexdump(const void *ptr, int length, const char *hdr, int flags) |
| 48 | { |
| 49 | int i, j, k; |
| 50 | int cols; |
| 51 | const unsigned char *cp; |
| 52 | char delim; |
| 53 | |
| 54 | if ((flags & HD_DELIM_MASK) != 0) |
| 55 | delim = (flags & HD_DELIM_MASK) >> 8; |
| 56 | else |
| 57 | delim = ' '; |
| 58 | |
| 59 | if ((flags & HD_COLUMN_MASK) != 0) |
| 60 | cols = flags & HD_COLUMN_MASK; |
| 61 | else |
| 62 | cols = 16; |
| 63 | |
| 64 | cp = ptr; |
| 65 | for (i = 0; i < length; i+= cols) { |
| 66 | if (hdr != NULL) |
| 67 | printf("%s", hdr); |
| 68 | |
| 69 | if ((flags & HD_OMIT_COUNT) == 0) |
| 70 | printf("%04x ", i); |
| 71 | |
| 72 | if ((flags & HD_OMIT_HEX) == 0) { |
| 73 | for (j = 0; j < cols; j++) { |
| 74 | k = i + j; |
| 75 | if (k < length) |
| 76 | printf("%c%02x", delim, cp[k]); |
| 77 | else |
| 78 | printf(" "); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | if ((flags & HD_OMIT_CHARS) == 0) { |
| 83 | printf(" |"); |
| 84 | for (j = 0; j < cols; j++) { |
| 85 | k = i + j; |
| 86 | if (k >= length) |
| 87 | printf(" "); |
| 88 | else if (cp[k] >= ' ' && cp[k] <= '~') |
| 89 | printf("%c", cp[k]); |
| 90 | else |
| 91 | printf("."); |
| 92 | } |
| 93 | printf("|"); |
| 94 | } |
| 95 | printf("\n"); |
| 96 | } |
| 97 | } |
| 98 | |