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49 lines
830 B
49 lines
830 B
#include <ctype.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "util.h"
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static uint8_t to_hex(uint8_t ch)
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{
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ch &= 0xf;
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return ch <= 9 ? '0' + ch : 'a' + ch - 10;
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}
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void print_hex_dump(const char *prefix, const void *buf, size_t len)
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{
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const uint8_t *ptr = buf;
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size_t linelen;
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uint8_t ch;
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char line[16 * 3 + 16 + 1];
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int li;
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int i;
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int j;
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for (i = 0; i < len; i += 16) {
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linelen = MIN(16, len - i);
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li = 0;
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for (j = 0; j < linelen; j++) {
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ch = ptr[i + j];
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line[li++] = to_hex(ch >> 4);
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line[li++] = to_hex(ch);
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line[li++] = ' ';
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}
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for (; j < 16; j++) {
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line[li++] = ' ';
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line[li++] = ' ';
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line[li++] = ' ';
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}
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for (j = 0; j < linelen; j++) {
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ch = ptr[i + j];
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line[li++] = isprint(ch) ? ch : '.';
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}
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line[li] = '\0';
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printf("%s %04x: %s\n", prefix, i, line);
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}
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}
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