i237/src/print_helper.c

#include <stdio.h>
#include <avr/pgmspace.h>
#include "print_helper.h"

int print_ascii_tbl (FILE *stream)
{
    for (char c = ' '; c <= '~'; c++) {
        if (!fprintf(stream, "%c ", c)) {
            return 0;
        }
    }

    return fprintf(stream, "\n");
}


int print_for_human (FILE *stream, const unsigned char *array, const int len)
{
    for (int i = 0; i < len; i++) {
        unsigned char c = array[i];
        if (c >= ' ' && c <= '~') {
            if (!fprintf(stream, "%c", c)) {
                return 0;
            }
        } else {
            if (!fprintf(stream, "\"0x%02x\"", c)) {
                return 0;
            }
        }
    }

    return fprintf(stream, "\n");
}