source: trunk/minix/commands/yap/output.c@ 15

/* Copyright (c) 1985 Ceriel J.H. Jacobs */

/*
 * Handle output to screen
 */

# ifndef lint
static char rcsid[] = "$Header: /cvsup/minix/src/commands/yap/output.c,v 1.1.1.1 2005/04/21 14:55:40 beng Exp $";
# endif

# define _OUTPUT_

# include "in_all.h"
# include "output.h"
# include "main.h"

# define OBUFSIZ 64*128

static char _outbuf[OBUFSIZ];

VOID
flush() {                       /* Flush output buffer, by writing it */
        register char *p = _outbuf;

        _ocnt = OBUFSIZ;
        if (_optr) (VOID) write(1, p, _optr - p);
        _optr = p;
}

VOID
nflush() {                      /* Flush output buffer, ignoring it */

        _ocnt = OBUFSIZ;
        _optr = _outbuf;
}

int
fputch(ch) char ch; {           /* print a character */
        putch(ch);
}

VOID
putline(s) register char *s; {  /* Print string s */

        if (!s) return;
        while (*s) {
                putch(*s++);
        }
}

/*
 * A safe version of putline. All control characters are echoed as ^X
 */

VOID
cputline(s) char *s; {
        register c;

        while (c = *s++) {
                if ((unsigned) c > 0177) c &= 0177;
                if (c < ' ' || c == 0177) {
                        putch('^');
                        c ^= 0100;
                }
                putch(c);
        }
}

/*
 * Simple minded routine to print a number
 */

VOID
prnum(n) long n; {

        putline(getnum(n));
}

static char *
fillnum(n, p)
        long n;
        char *p;
{
        if (n >= 10) {
                p = fillnum(n / 10, p);
        }
        *p++ = (int) (n % 10) + '0';
        *p = '\0';
        return p;
}

char *
getnum(n)
        long n;
{
        static char buf[20];

        fillnum(n, buf);
        return buf;
}