1/* Copyright (c) 1985 Ceriel J.H. Jacobs */
  2
  3/*
  4 * Handle output to screen
  5 */
  6
  7#include "in_all.h"
  8#include "output.h"
  9#include "main.h"
 10
 11int _ocnt;
 12char *_optr;
 13
 14#define OBUFSIZ 64 * 128
 15
 16static char _outbuf[OBUFSIZ];
 17
 18void
 19flush()
 20{ /* Flush output buffer, by writing it */
 21	char *p = _outbuf;
 22
 23	_ocnt = OBUFSIZ;
 24	if (_optr)
 25		(void)write(1, p, _optr - p);
 26	_optr = p;
 27}
 28
 29void
 30nflush()
 31{ /* Flush output buffer, ignoring it */
 32
 33	_ocnt = OBUFSIZ;
 34	_optr = _outbuf;
 35}
 36
 37int
 38fputch(int ch)
 39{ /* print a character */
 40	putch(ch);
 41	return ch;
 42}
 43
 44void
 45putline(char *s)
 46{ /* Print string s */
 47
 48	if (!s)
 49		return;
 50	while (*s) {
 51		putch(*s++);
 52	}
 53}
 54
 55/*
 56 * A safe version of putline. All control characters are echoed as ^X
 57 */
 58
 59void
 60cputline(char *s)
 61{
 62	int c;
 63
 64	while ((c = *s++) != 0) {
 65		if ((unsigned char)c < ' ' || (unsigned char)c == 0x7f) {
 66			putch('^');
 67			c ^= 0x40;
 68		}
 69		putch(c);
 70	}
 71}
 72
 73/*
 74 * Simple minded routine to print a number
 75 */
 76
 77void
 78prnum(long n)
 79{
 80
 81	putline(getnum(n));
 82}
 83
 84static char *
 85fillnum(long n, char *p)
 86{
 87	if (n >= 10) {
 88		p = fillnum(n / 10, p);
 89	}
 90	*p++ = (int)(n % 10) + '0';
 91	*p = '\0';
 92	return p;
 93}
 94
 95char *
 96getnum(long n)
 97{
 98	static char buf[20];
 99
100	fillnum(n, buf);
101	return buf;
102}