libedit-40/src/read.c

53 #include "el.h"
67 read_init(EditLine *el)
70 	el->el_read.read_char = read_char;
80 el_read_setfn(EditLine *el, el_rfunc_t rc)
82 	el->el_read.read_char = (rc == EL_BUILTIN_GETCFN) ? read_char : rc;
92 el_read_getfn(EditLine *el)
94        return el->el_read.read_char == read_char ?
95 	    EL_BUILTIN_GETCFN : el->el_read.read_char;
105 read_debug(EditLine *el)
108 	if (el->el_line.cursor > el->el_line.lastchar)
109 		(void) fprintf(el->el_errfile, "cursor > lastchar\r\n");
110 	if (el->el_line.cursor < el->el_line.buffer)
111 		(void) fprintf(el->el_errfile, "cursor < buffer\r\n");
112 	if (el->el_line.cursor > el->el_line.limit)
113 		(void) fprintf(el->el_errfile, "cursor > limit\r\n");
114 	if (el->el_line.lastchar > el->el_line.limit)
115 		(void) fprintf(el->el_errfile, "lastchar > limit\r\n");
116 	if (el->el_line.limit != &el->el_line.buffer[EL_BUFSIZ - 2])
117 		(void) fprintf(el->el_errfile, "limit != &buffer[EL_BUFSIZ-2]\r\n");
188 read_preread(EditLine *el)
192 	if (el->el_tty.t_mode == ED_IO)
199 	(void) ioctl(el->el_infd, FIONREAD, &chrs);
203 		chrs = read(el->el_infd, buf,
207 			el_push(el, buf);
220 FUN(el,push)(EditLine *el, const Char *str)
222 	c_macro_t *ma = &el->el_chared.c_macro;
230 	terminal_beep(el);
231 	terminal__flush(el);
240 read_getcmd(EditLine *el, el_action_t *cmdnum, Char *ch)
245 	el->el_errno = 0;
247 		if ((num = FUN(el,getc)(el, ch)) != 1) {/* if EOF or error */
248 			el->el_errno = num == 0 ? 0 : errno;
254 			el->el_state.metanext = 0;
260 		if (el->el_state.metanext) {
261 			el->el_state.metanext = 0;
269 			cmd = el->el_map.current[(unsigned char) *ch];
272 			switch (keymacro_get(el, ch, &val)) {
277 				FUN(el,push)(el, val.str);
286 				EL_ABORT((el->el_errfile, "Bad XK_ type \n"));
290 		if (el->el_map.alt == NULL)
291 			el->el_map.current = el->el_map.key;
313 read_char(EditLine *el, Char *cp)
322 	el->el_signal->sig_no = 0;
323 	while ((num_read = read(el->el_infd, cbuf + cbp, (size_t)1)) == -1) {
325 		switch (el->el_signal->sig_no) {
327 			FUN(el,set)(el, EL_REFRESH);
330 			sig_set(el);
335 		if (!tried && read__fixio(el->el_infd, e) == 0)
346 	if (el->el_flags & CHARSET_IS_UTF8) {
367 	if ((el->el_flags & IGNORE_EXTCHARS) && bytes > 1) {
394 FUN(el,getc)(EditLine *el, Char *cp)
397 	c_macro_t *ma = &el->el_chared.c_macro;
399 	terminal__flush(el);
402 			if (!read_preread(el))
425 	(void) fprintf(el->el_errfile, "Turning raw mode on\n");
427 	if (tty_rawmode(el) < 0)/* make sure the tty is set up correctly */
431 	(void) fprintf(el->el_errfile, "Reading a character\n");
433 	num_read = (*el->el_read.read_char)(el, cp);
435 		el->el_errno = errno;
437 	if (el->el_flags & NARROW_READ)
441 	(void) fprintf(el->el_errfile, "Got it %c\n", *cp);
447 read_prepare(EditLine *el)
449 	if (el->el_flags & HANDLE_SIGNALS)
450 		sig_set(el);
451 	if (el->el_flags & NO_TTY)
453 	if ((el->el_flags & (UNBUFFERED|EDIT_DISABLED)) == UNBUFFERED)
454 		tty_rawmode(el);
458 	el_resize(el);
459 	re_clear_display(el);	/* reset the display stuff */
460 	ch_reset(el, 0);
461 	re_refresh(el);		/* print the prompt */
463 	if (el->el_flags & UNBUFFERED)
464 		terminal__flush(el);
468 read_finish(EditLine *el)
470 	if ((el->el_flags & UNBUFFERED) == 0)
471 		(void) tty_cookedmode(el);
472 	if (el->el_flags & HANDLE_SIGNALS)
473 		sig_clr(el);
477 FUN(el,gets)(EditLine *el, int *nread)
486 	c_macro_t *ma = &el->el_chared.c_macro;
493 	if (el->el_flags & NO_TTY) {
496 		cp = el->el_line.buffer;
497 		while ((num = (*el->el_read.read_char)(el, cp)) == 1) {
499 			if (cp + 1 >= el->el_line.limit) {
500 				idx = (size_t)(cp - el->el_line.buffer);
501 				if (!ch_enlargebufs(el, (size_t)2))
503 				cp = &el->el_line.buffer[idx];
506 			if (el->el_flags & UNBUFFERED)
513 				cp = el->el_line.buffer;
514 			el->el_errno = errno;
515 		} else if (num == 0) el->el_state.thiscmd = EL_EOF;
522 	if (el->el_tty.t_mode == EX_IO && ma->level < 0) {
525 		(void) ioctl(el->el_infd, FIONREAD, &chrs);
527 			if (tty_rawmode(el) < 0) {
536 	if ((el->el_flags & UNBUFFERED) == 0)
537 		read_prepare(el);
539 	if (el->el_flags & EDIT_DISABLED) {
542 		if ((el->el_flags & UNBUFFERED) == 0)
543 			cp = el->el_line.buffer;
545 			cp = el->el_line.lastchar;
547 		terminal__flush(el);
549 		while ((num = (*el->el_read.read_char)(el, cp)) == 1) {
551 			if (cp + 1 >= el->el_line.limit) {
552 				idx = (size_t)(cp - el->el_line.buffer);
553 				if (!ch_enlargebufs(el, (size_t)2))
555 				cp = &el->el_line.buffer[idx];
559 			if (el->el_flags & UNBUFFERED)
567 				cp = el->el_line.buffer;
568 			el->el_errno = errno;
569 		} else if (num == 0) el->el_state.thiscmd = EL_EOF;
577 		read_debug(el);
580 		if ((num = read_getcmd(el, &cmdnum, &ch)) != OKCMD) {
582 			(void) fprintf(el->el_errfile,
585 			if (num == 0) el->el_state.thiscmd = EL_EOF;
588 		if (el->el_errno == EINTR) {
589 			el->el_line.buffer[0] = '\0';
590 			el->el_line.lastchar =
591 			    el->el_line.cursor = el->el_line.buffer;
594 		if ((unsigned int)cmdnum >= (unsigned int)el->el_map.nfunc) {	/* BUG CHECK command */
596 			(void) fprintf(el->el_errfile,
605 			for (b = el->el_map.help; b->name; b++)
609 				(void) fprintf(el->el_errfile,
612 				(void) fprintf(el->el_errfile,
617 		el->el_state.thiscmd = cmdnum;
618 		el->el_state.thisch = ch;
619 		if (el->el_map.type == MAP_VI &&
620 		    el->el_map.current == el->el_map.key &&
621 		    el->el_chared.c_redo.pos < el->el_chared.c_redo.lim) {
623 			    el->el_chared.c_redo.pos != el->el_chared.c_redo.buf
624 			    && Isprint(el->el_chared.c_redo.pos[-1]))
625 				el->el_chared.c_redo.pos--;
627 				*el->el_chared.c_redo.pos++ = ch;
629 		retval = (*el->el_map.func[cmdnum]) (el, ch);
631 		(void) fprintf(el->el_errfile,
636 		el->el_state.lastcmd = cmdnum;
641 			re_refresh_cursor(el);
645 			re_clear_lines(el);
646 			re_clear_display(el);
650 			re_refresh(el);
654 			re_refresh(el);
655 			terminal_beep(el);
666 			if ((el->el_flags & UNBUFFERED) == 0)
669 				*el->el_line.lastchar++ = CONTROL('d');
670 				el->el_line.cursor = el->el_line.lastchar;
676 			num = (int)(el->el_line.lastchar - el->el_line.buffer);
681 			(void) fprintf(el->el_errfile,
685 			re_clear_display(el);	/* reset the display stuff */
686 			ch_reset(el, 1);	/* reset the input pointers */
687 			re_refresh(el); /* print the prompt again */
693 			(void) fprintf(el->el_errfile,
696 			terminal_beep(el);
697 			terminal__flush(el);
700 		el->el_state.argument = 1;
701 		el->el_state.doingarg = 0;
702 		el->el_chared.c_vcmd.action = NOP;
703 		if (el->el_flags & UNBUFFERED)
707 	terminal__flush(el);		/* flush any buffered output */
709 	if ((el->el_flags & UNBUFFERED) == 0) {
710 		read_finish(el);
713 		*nread = (int)(el->el_line.lastchar - el->el_line.buffer);
717 	el->el_line.cursor = el->el_line.lastchar = cp;
719 	*nread = (int)(el->el_line.cursor - el->el_line.buffer);
724 			errno = el->el_errno;
728 		el->el_line.buffer[*nread] = 0;
729 		return el->el_line.buffer;