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61 lines
1.4 KiB
61 lines
1.4 KiB
//
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// Created by MightyPork on 2017/12/04.
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//
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include "hexdump.h"
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void hexDump(const char *restrict desc, const void *restrict addr, uint32_t len)
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{
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uint32_t i;
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uint8_t buff[17];
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uint8_t *pc = (unsigned char*)addr;
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// Output description if given.
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if (desc != NULL)
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fprintf(stderr, "%s:\r\n", desc);
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if (len == 0) {
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fprintf(stderr, " ZERO LENGTH\r\n");
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return;
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}
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// Process every byte in the data.
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for (i = 0; i < len; i++) {
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// Multiple of 16 means new line (with line offset).
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if ((i % 16) == 0) {
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// Just don't print ASCII for the zeroth line.
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if (i != 0)
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fprintf(stderr, " %s\r\n", buff);
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// Output the offset.
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fprintf(stderr, " %04"PRIx32" ", i);
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}
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// Now the hex code for the specific character.
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fprintf(stderr, " %02x", pc[i]);
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// And store a printable ASCII character for later.
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if ((pc[i] < 0x20) || (pc[i] > 0x7e))
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buff[i % 16] = '.';
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else
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buff[i % 16] = pc[i];
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buff[(i % 16) + 1] = '\0';
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}
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// Pad out last line if not exactly 16 characters.
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while ((i % 16) != 0) {
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fprintf(stderr, " ");
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i++;
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}
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// And print the final ASCII bit.
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fprintf(stderr, " %s\r\n", buff);
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(void)buff;
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}
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