#include "input.h"

#define OBUFSIZE  4
#define SBUFSIZE  5

#define PADDING '='

unsigned char o[OBUFSIZE];
unsigned char s[SBUFSIZE];

unsigned char *
getocts(FILE *fp, int *np)
{
    int n, c;

    n = 0;
    while (n < OBUFSIZE-1 && (c = fgetc(fp)) != EOF)
        o[n++] = c;
    *np = n;

    return (*np) ? o : NULL;
}

unsigned char *
getsxts(FILE *fp, int *np)
{
    int n, p, c;

    n = p = 0;
    while (n < SBUFSIZE-1 && (c = fgetc(fp)) != EOF && c != PADDING)
        s[n++] = c;
    while (n+p < SBUFSIZE-1)
        s[n+p++] = PADDING;
    *np = n;

    return (n) ? s : NULL;
}