_delchars.c

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· C语言 代码 · 共 44 行

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


#include "curses.ext"

extern	int	_outch();

/*
 * Delete n characters.
 */
_delchars (n)
{
#ifdef DEBUG
	if(outf) fprintf(outf, "_delchars(%d).\n", n);
#endif
	if (enter_delete_mode) {
		if (strcmp(enter_delete_mode, enter_insert_mode) == 0) {
			if (SP->phys_irm == 0) {
				tputs(enter_delete_mode,1,_outch);
				SP->phys_irm = 1;
			} 
		}
		else {
			if (SP->phys_irm == 1) {
				tputs(exit_insert_mode,1,_outch);
				SP->phys_irm = 0;
			}
			tputs(enter_delete_mode,1,_outch);
		}
	}
	while (--n >= 0) {
		/* Only one line can be affected by our delete char */
		tputs(delete_character, 1, _outch);
	}
	if (exit_delete_mode) {
		if (strcmp(exit_delete_mode, exit_insert_mode) == 0)
			SP->phys_irm = 0;
		else
			tputs(exit_delete_mode, 1, _outch);
	}
}