n2n/src/hexdump.c

#include <stdio.h>

#include "n2n.h"
#include "hexdump.h"

void fhexdump(unsigned int display_addr, void *in, int size, FILE *stream) {
  uint8_t *p = in;

  while(size>0) {
    int i;

    fprintf(stream, "%03x: ", display_addr);

    for (i = 0; i < 16; i++) {
      if (i < size) {
	fprintf(stream, "%02x", p[i]);
      } else {
	fprintf(stream, "  ");
      }
      if (i==7) {
	fprintf(stream, "  ");
      } else {
	fprintf(stream, " ");
      }
    }
    fprintf(stream, "  |");

    for (i = 0; i < 16; i++) {
      if (i < size) {
	char ch = p[i];
	if (ch>=0x20 && ch<=0x7e) {
	  fprintf(stream, "%c", ch);
	} else {
	  fprintf(stream, " ");
	}
      }
    }
    fprintf(stream, "|\n");

    size -= 16;
    display_addr += 16;
    p += 16;
  }
}