cntcostfn.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 36 行

#ifdef lint
static char *sccsid = "@(#)cntcostfn.c	4.1	(ULTRIX)	7/2/90";
#endif lint

#include "curses.ext"

static counter = 0;
/* ARGSUSED */
_countchar(ch)
char ch;
{
	counter++;
}

/*
 * Figure out the _cost in characters to print this string.
 * Due to padding, we can't just use strlen, so instead we
 * feed it through tputs and trap the results.
 * Even if the terminal uses xon/xoff handshaking, count the
 * pad chars here since they estimate the real time to do the
 * operation, useful in calculating costs.
 */
_cost_fn(str, affcnt)
char *str;
{
	int save_xflag = xon_xoff;

	if (str == NULL)
		return INFINITY;
	counter = 0;
	xon_xoff = 0;
	tputs(str, affcnt, _countchar);
	xon_xoff = save_xflag;
	return counter;
}