Function hist_get

extern/editline/src/hist.c:97–150

hist_get(): * Get a history line and update it in the buffer. * eventno tells us the event to get. */

 *	eventno tells us the event to get.
 */
protected el_action_t
hist_get(EditLine *el)
{
	const Char *hp;
	int h;

	if (el->el_history.eventno == 0) {	/* if really the current line */
		(void) Strncpy(el->el_line.buffer, el->el_history.buf,
		    el->el_history.sz);
		el->el_line.lastchar = el->el_line.buffer +
		    (el->el_history.last - el->el_history.buf);

#ifdef KSHVI
		if (el->el_map.type == MAP_VI)
			el->el_line.cursor = el->el_line.buffer;
		else
#endif /* KSHVI */
			el->el_line.cursor = el->el_line.lastchar;

		return CC_REFRESH;
	}
	if (el->el_history.ref == NULL)
		return CC_ERROR;

	hp = HIST_FIRST(el);

	if (hp == NULL)
		return CC_ERROR;

	for (h = 1; h < el->el_history.eventno; h++)
		if ((hp = HIST_NEXT(el)) == NULL) {
			el->el_history.eventno = h;
			return CC_ERROR;
		}
	(void) Strncpy(el->el_line.buffer, hp,
			(size_t)(el->el_line.limit - el->el_line.buffer));
	el->el_line.buffer[el->el_line.limit - el->el_line.buffer - 1] = '\0';
	el->el_line.lastchar = el->el_line.buffer + Strlen(el->el_line.buffer);

	if (el->el_line.lastchar > el->el_line.buffer
	    && el->el_line.lastchar[-1] == '\n')
		el->el_line.lastchar--;
	if (el->el_line.lastchar > el->el_line.buffer
	    && el->el_line.lastchar[-1] == ' ')
		el->el_line.lastchar--;
#ifdef KSHVI
	if (el->el_map.type == MAP_VI)
		el->el_line.cursor = el->el_line.buffer;
	else
#endif /* KSHVI */
		el->el_line.cursor = el->el_line.lastchar;

	return CC_REFRESH;
}


/* hist_command()