common.c

Asterisk-1.4.4最新内核源代码

 **/

/* ed_tty_sigint():
 *	Tty interrupt character
 *	[^C]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigint(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_tty_dsusp():
 *	Tty delayed suspend character
 *	[^Y]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_dsusp(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_tty_flush_output():
 *	Tty flush output characters
 *	[^O]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_flush_output(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_tty_sigquit():
 *	Tty quit character
 *	[^\]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigquit(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_tty_sigtstp():
 *	Tty suspend character
 *	[^Z]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_sigtstp(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_tty_stop_output():
 *	Tty disallow output characters
 *	[^S]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_stop_output(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_tty_start_output():
 *	Tty allow output characters
 *	[^Q]
 */
protected el_action_t
/*ARGSUSED*/
ed_tty_start_output(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_newline():
 *	Execute command
 *	[^J]
 */
protected el_action_t
/*ARGSUSED*/
ed_newline(EditLine *el, int c)
{

	re_goto_bottom(el);
	*el->el_line.lastchar++ = '\n';
	*el->el_line.lastchar = '\0';
	if (el->el_map.type == MAP_VI)
		el->el_chared.c_vcmd.ins = el->el_line.buffer;
	return (CC_NEWLINE);
}


/* ed_delete_prev_char():
 *	Delete the character to the left of the cursor
 *	[^?]
 */
protected el_action_t
/*ARGSUSED*/
ed_delete_prev_char(EditLine *el, int c)
{

	if (el->el_line.cursor <= el->el_line.buffer)
		return (CC_ERROR);

	c_delbefore(el, el->el_state.argument);
	el->el_line.cursor -= el->el_state.argument;
	if (el->el_line.cursor < el->el_line.buffer)
		el->el_line.cursor = el->el_line.buffer;
	return (CC_REFRESH);
}


/* ed_clear_screen():
 *	Clear screen leaving current line at the top
 *	[^L]
 */
protected el_action_t
/*ARGSUSED*/
ed_clear_screen(EditLine *el, int c)
{

	term_clear_screen(el);	/* clear the whole real screen */
	re_clear_display(el);	/* reset everything */
	return (CC_REFRESH);
}


/* ed_redisplay():
 *	Redisplay everything
 *	^R
 */
protected el_action_t
/*ARGSUSED*/
ed_redisplay(EditLine *el, int c)
{

	return (CC_REDISPLAY);
}


/* ed_start_over():
 *	Erase current line and start from scratch
 *	[^G]
 */
protected el_action_t
/*ARGSUSED*/
ed_start_over(EditLine *el, int c)
{

	ch_reset(el);
	return (CC_REFRESH);
}


/* ed_sequence_lead_in():
 *	First character in a bound sequence
 *	Placeholder for external keys
 */
protected el_action_t
/*ARGSUSED*/
ed_sequence_lead_in(EditLine *el, int c)
{

	return (CC_NORM);
}


/* ed_prev_history():
 *	Move to the previous history line
 *	[^P] [k]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_history(EditLine *el, int c)
{
	char beep = 0;

	el->el_chared.c_undo.action = NOP;
	*el->el_line.lastchar = '\0';		/* just in case */

	if (el->el_history.eventno == 0) {	/* save the current buffer
						 * away */
		(void) strncpy(el->el_history.buf, el->el_line.buffer,
		    EL_BUFSIZ - 1);
		el->el_history.last = el->el_history.buf +
		    (el->el_line.lastchar - el->el_line.buffer);
	}
	el->el_history.eventno += el->el_state.argument;

	if (hist_get(el) == CC_ERROR) {
		beep = 1;
		/* el->el_history.eventno was fixed by first call */
		(void) hist_get(el);
	}
	re_refresh(el);
	if (beep)
		return (CC_ERROR);
	else
		return (CC_NORM);	/* was CC_UP_HIST */
}


/* ed_next_history():
 *	Move to the next history line
 *	[^N] [j]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_history(EditLine *el, int c)
{

	el->el_chared.c_undo.action = NOP;
	*el->el_line.lastchar = '\0';	/* just in case */

	el->el_history.eventno -= el->el_state.argument;

	if (el->el_history.eventno < 0) {
		el->el_history.eventno = 0;
		return (CC_ERROR);/* make it beep */
	}
	return (hist_get(el));
}


/* ed_search_prev_history():
 *	Search previous in history for a line matching the current
 *	next search history [M-P] [K]
 */
protected el_action_t
/*ARGSUSED*/
ed_search_prev_history(EditLine *el, int c)
{
	const char *hp;
	int h;
	bool_t found = 0;

	el->el_chared.c_vcmd.action = NOP;
	el->el_chared.c_undo.action = NOP;
	*el->el_line.lastchar = '\0';	/* just in case */
	if (el->el_history.eventno < 0) {
#ifdef DEBUG_EDIT
		(void) fprintf(el->el_errfile,
		    "e_prev_search_hist(): eventno < 0;\n");
#endif
		el->el_history.eventno = 0;
		return (CC_ERROR);
	}
	if (el->el_history.eventno == 0) {
		(void) strncpy(el->el_history.buf, el->el_line.buffer,
		    EL_BUFSIZ - 1);
		el->el_history.last = el->el_history.buf +
		    (el->el_line.lastchar - el->el_line.buffer);
	}
	if (el->el_history.ref == NULL)
		return (CC_ERROR);

	hp = HIST_FIRST(el);
	if (hp == NULL)
		return (CC_ERROR);

	c_setpat(el);		/* Set search pattern !! */

	for (h = 1; h <= el->el_history.eventno; h++)
		hp = HIST_NEXT(el);

	while (hp != NULL) {
#ifdef SDEBUG
		(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
		if ((strncmp(hp, el->el_line.buffer, (size_t)
			    (el->el_line.lastchar - el->el_line.buffer)) ||
			hp[el->el_line.lastchar - el->el_line.buffer]) &&
		    c_hmatch(el, hp)) {
			found++;
			break;
		}
		h++;
		hp = HIST_NEXT(el);
	}

	if (!found) {
#ifdef SDEBUG
		(void) fprintf(el->el_errfile, "not found\n");
#endif
		return (CC_ERROR);
	}
	el->el_history.eventno = h;

	return (hist_get(el));
}


/* ed_search_next_history():
 *	Search next in history for a line matching the current
 *	[M-N] [J]
 */
protected el_action_t
/*ARGSUSED*/
ed_search_next_history(EditLine *el, int c)
{
	const char *hp;
	int h;
	bool_t found = 0;

	el->el_chared.c_vcmd.action = NOP;
	el->el_chared.c_undo.action = NOP;
	*el->el_line.lastchar = '\0';	/* just in case */

	if (el->el_history.eventno == 0)
		return (CC_ERROR);

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

	hp = HIST_FIRST(el);
	if (hp == NULL)
		return (CC_ERROR);

	c_setpat(el);		/* Set search pattern !! */

	for (h = 1; h < el->el_history.eventno && hp; h++) {
#ifdef SDEBUG
		(void) fprintf(el->el_errfile, "Comparing with \"%s\"\n", hp);
#endif
		if ((strncmp(hp, el->el_line.buffer, (size_t)
			    (el->el_line.lastchar - el->el_line.buffer)) ||
			hp[el->el_line.lastchar - el->el_line.buffer]) &&
		    c_hmatch(el, hp))
			found = h;
		hp = HIST_NEXT(el);
	}

	if (!found) {		/* is it the current history number? */
		if (!c_hmatch(el, el->el_history.buf)) {
#ifdef SDEBUG
			(void) fprintf(el->el_errfile, "not found\n");
#endif
			return (CC_ERROR);
		}
	}
	el->el_history.eventno = found;

	return (hist_get(el));
}


/* ed_prev_line():
 *	Move up one line
 *	Could be [k] [^p]
 */
protected el_action_t
/*ARGSUSED*/
ed_prev_line(EditLine *el, int c)
{
	char *ptr;
	int nchars = c_hpos(el);

	/*
         * Move to the line requested
         */
	if (*(ptr = el->el_line.cursor) == '\n')
		ptr--;

	for (; ptr >= el->el_line.buffer; ptr--)
		if (*ptr == '\n' && --el->el_state.argument <= 0)
			break;

	if (el->el_state.argument > 0)
		return (CC_ERROR);

	/*
         * Move to the beginning of the line
         */
	for (ptr--; ptr >= el->el_line.buffer && *ptr != '\n'; ptr--)
		continue;

	/*
         * Move to the character requested
         */
	for (ptr++;
	    nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
	    ptr++)
		continue;

	el->el_line.cursor = ptr;
	return (CC_CURSOR);
}


/* ed_next_line():
 *	Move down one line
 *	Could be [j] [^n]
 */
protected el_action_t
/*ARGSUSED*/
ed_next_line(EditLine *el, int c)
{
	char *ptr;
	int nchars = c_hpos(el);

	/*
         * Move to the line requested
         */
	for (ptr = el->el_line.cursor; ptr < el->el_line.lastchar; ptr++)
		if (*ptr == '\n' && --el->el_state.argument <= 0)
			break;

	if (el->el_state.argument > 0)
		return (CC_ERROR);

	/*
         * Move to the character requested
         */
	for (ptr++;
	    nchars-- > 0 && ptr < el->el_line.lastchar && *ptr != '\n';
	    ptr++)
		continue;

	el->el_line.cursor = ptr;
	return (CC_CURSOR);
}


/* ed_command():
 *	Editline extended command
 *	[M-X] [:]
 */
protected el_action_t
/*ARGSUSED*/
ed_command(EditLine *el, int c)
{
	char tmpbuf[EL_BUFSIZ];
	int tmplen;

	el->el_line.buffer[0] = '\0';
	el->el_line.lastchar = el->el_line.buffer;
	el->el_line.cursor = el->el_line.buffer;

	c_insert(el, 3);	/* prompt + ": " */
	*el->el_line.cursor++ = '\n';
	*el->el_line.cursor++ = ':';
	*el->el_line.cursor++ = ' ';
	re_refresh(el);

	tmplen = c_gets(el, tmpbuf);
	tmpbuf[tmplen] = '\0';

	el->el_line.buffer[0] = '\0';
	el->el_line.lastchar = el->el_line.buffer;
	el->el_line.cursor = el->el_line.buffer;

	if (parse_line(el, tmpbuf) == -1)
		return (CC_ERROR);
	else
		return (CC_REFRESH);
}