denser/bprint.c at main · simta/denser · GitHub

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/*
 * Copyright (c) Regents of The University of Michigan
 * See COPYING.
 */

#define BPXLEN 50
#define BPALEN 18
#include <ctype.h>
#include <stdio.h>
#include <strings.h>

#include "bprint.h"

char hexdig[] = "0123456789ABCDEF";

void
bprint(char *data, int len) {
    char xout[ BPXLEN ], aout[ BPALEN ];
    int  i = 0;

    bzero(xout, BPXLEN);
    bzero(aout, BPALEN);

    for (i = 0; len; len--) {
        if (i == 16) {
            printf("%-48s\t%-16s\n", xout, aout);
            bzero(xout, BPXLEN);
            bzero(aout, BPALEN);
            i = 0;
        }

        if (isascii((unsigned char)*data) && isprint((unsigned char)*data)) {
            aout[ i ] = *data;
        } else {
            aout[ i ] = '.';
        }

        xout[ (i * 3) ] = hexdig[ (*data & 0xf0) >> 4 ];
        xout[ (i * 3) + 1 ] = hexdig[ *data & 0x0f ];
        xout[ (i * 3) + 2 ] = ' ';

        data++;
        i++;
    }

    if (i) {
        printf("%-48s\t%-16s\n", xout, aout);
    }
    printf("%s\n", "(end)");

    return;
}