CPlay/freelist/hexdump.c

36 lines
833 B
C

#include <ctype.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
void hexdump(const void *data, const size_t size, const size_t width) {
const unsigned char *p = (const unsigned char *)data;
size_t i, j;
for (i = 0; i < size; i += width) {
printf("%08zx ", i);
for (j = 0; j < width; j++) {
if (i + j < size) {
printf("%02X ", p[i + j]);
} else {
printf(" ");
}
if ((j + 1) % 8 == 0)
printf(" ");
}
printf(" |");
for (j = 0; j < width && i + j < size; j++) {
unsigned char c = p[i + j];
printf("%c", isprint(c) ? c : '.');
}
printf("|\n");
}
}