source: trunk/third/nmh/sbr/snprintb.c @ 12455

/*
 * snprintb.c -- snprintf a %b string
 *
 * $Id: snprintb.c,v 1.1.1.1 1999-02-07 18:14:10 danw Exp $
 */

#include <h/mh.h>


char *
snprintb (char *buffer, size_t n, unsigned v, char *bits)
{
    register int i, j;
    register char c, *bp;

    snprintf (buffer, n, bits && *bits == 010 ? "0%o" : "0x%x", v);
    bp = buffer + strlen(buffer);

    if (bits && *++bits) {
        j = 0;
        *bp++ = '<';
        while ((i = *bits++))
            if (v & (1 << (i - 1))) {
                if (j++)
                    *bp++ = ',';
                for (; (c = *bits) > 32; bits++)
                    *bp++ = c;
            }
            else
                for (; *bits > 32; bits++)
                    continue;
        *bp++ = '>';
        *bp = 0;
    }

    return buffer;
}