[unix-history] / usr / src / lib / libedit / read.c

/*-
 * Copyright (c) 1992 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Christos Zoulas of Cornell University.
 *
 * %sccs.include.redist.c%
 */

#if !defined(lint) && !defined(SCCSID)
static char sccsid[] = "@(#)read.c	5.2 (Berkeley) %G%";

#endif /* not lint && not SCCSID */
/*
 * read.c: Clean this junk up! This is horrible code.
 *	   Terminal read functions
 */
#include "sys.h"
#include <sys/errno.h>
#include <unistd.h>
#include <stdlib.h>
extern int errno;
#include "el.h"

#define OKCMD -1

private int read__fixio		__P((int, int));
private int read_preread	__P((EditLine *));
private int read_getcmd		__P((EditLine *, el_action_t *, char *));

#ifdef DEBUG_EDIT
private void
read_debug(el)
    EditLine *el;
{

    if (el->el_line.cursor > el->el_line.lastchar)
	(void) fprintf(el->el_errfile, "cursor > lastchar\r\n");
    if (el->el_line.cursor < el->el_line.buffer)
	(void) fprintf(el->el_errfile, "cursor < buffer\r\n");
    if (el->el_line.cursor > el->el_line.limit)
	(void) fprintf(el->el_errfile, "cursor > limit\r\n");
    if (el->el_line.lastchar > el->el_line.limit)
	(void) fprintf(el->el_errfile, "lastchar > limit\r\n");
    if (el->el_line.limit != &el->el_line.buffer[EL_BUFSIZ - 2])
	(void) fprintf(el->el_errfile, "limit != &buffer[EL_BUFSIZ-2]\r\n");
}
#endif /* DEBUG_EDIT */

/* read__fixio():
 *	Try to recover from a read error
 */
private int
read__fixio(fd, e)
    int fd, e;
{
    switch (e) {
    case -1:	/* Make sure that the code is reachable */

#ifdef EWOULDBLOCK
    case EWOULDBLOCK:
# define TRY_AGAIN
#endif /* EWOULDBLOCK */

#if defined(POSIX) && defined(EAGAIN)
# if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
    case EAGAIN:
#  define TRY_AGAIN
# endif /* EWOULDBLOCK && EWOULDBLOCK != EAGAIN */
#endif /* POSIX && EAGAIN */

	e = 0;
#ifdef TRY_AGAIN
# if defined(F_SETFL) && defined(O_NDELAY)
	if ((e = fcntl(fd, F_GETFL, 0)) == -1)
	    return -1;

	if (fcntl(fd, F_SETFL, e & ~O_NDELAY) == -1)
	    return -1;
	else 
	    e = 1;
# endif /* F_SETFL && O_NDELAY */

# ifdef FIONBIO
	if (ioctl(fd, FIONBIO, (ioctl_t) &e) == -1)
	    return -1;
	else
	    e = 1;
# endif	/* FIONBIO */

#endif /* TRY_AGAIN */
	return e ? 0 : -1;

    case EINTR:
	return 0;

    default:
	return -1;
    }
}


/* read_preread():
 *	Try to read the stuff in the input queue;
 */
private int
read_preread(el)
    EditLine *el;
{
    int    chrs = 0;

    if (el->el_chared.c_macro.nline) {
	el_free((ptr_t) el->el_chared.c_macro.nline);
	el->el_chared.c_macro.nline = NULL;
    }

    if (el->el_tty.t_mode == ED_IO)
	return 0;

#ifdef FIONREAD
    (void) ioctl(el->el_infd, FIONREAD, (ioctl_t) &chrs);
    if (chrs > 0) {
	char    buf[EL_BUFSIZ];

	chrs = read(el->el_infd, buf, (size_t) MIN(chrs, EL_BUFSIZ - 1));
	if (chrs > 0) {
	    buf[chrs] = '\0';
	    el->el_chared.c_macro.nline = strdup(buf);
	    el_push(el->el_chared.c_macro.nline);
	}
    }
#endif  /* FIONREAD */

    return chrs > 0;
}


/* el_push():
 *	Push a macro
 */
public void
el_push(el, str)
    EditLine *el;
    const char   *str;
{
    c_macro_t *ma = &el->el_chared.c_macro;

    if (str != NULL && ma->level + 1 < EL_MAXMACRO) {
	ma->level++;
	ma->macro[ma->level] = (char *) str;
    }
    else {
	term_beep(el);
	term__flush();
    }
}


/* read_getcmd():
 *	Return next command from the input stream.
 */
private int
read_getcmd(el, cmdnum, ch)
    EditLine *el;
    el_action_t *cmdnum;
    char *ch;
{
    el_action_t  cmd = 0;
    int     num;

    while (cmd == 0 || cmd == ED_SEQUENCE_LEAD_IN) {
	if ((num = el_getc(el, ch)) != 1)	/* if EOF or error */
	    return num;

#ifdef	KANJI
	if ((*ch & 0200)) {
	    el->el_state.metanext = 0;
	    cmd = CcViMap[' '];
	    break;
	}
	else
#endif /* KANJI */

	if (el->el_state.metanext) {
	    el->el_state.metanext = 0;
	    *ch |= 0200;
	}
	cmd = el->el_map.current[(unsigned char) *ch];
	if (cmd == ED_SEQUENCE_LEAD_IN) {
	    key_value_t val;
	    switch (key_get(el, ch, &val)) {
	    case XK_CMD:
		cmd = val.cmd;
		break;
	    case XK_STR:
		el_push(el, val.str);
		break;
#ifdef notyet
	    case XK_EXE:
		/* XXX: In the future to run a user function */
		RunCommand(val.str);
		break;
#endif
	    default:
		abort();
		break;
	    }
	}
	if (el->el_map.alt == NULL) 
	    el->el_map.current = el->el_map.key;
    }
    *cmdnum = cmd;
    return OKCMD;
}


/* el_getc():
 *	Read a character
 */
public int
el_getc(el, cp)
    EditLine *el;
    char *cp;
{
    int num_read;
    unsigned char tcp;
    int tried = 0;

    c_macro_t *ma = &el->el_chared.c_macro;

    term__flush();
    for (;;) {
	if (ma->level < 0) {
	    if (!read_preread(el))
		break;
	}
	if (ma->level < 0) 
	    break;
   
	if (*ma->macro[ma->level] == 0) {
	    ma->level--;
	    continue;
	}
	*cp = *ma->macro[ma->level]++ & 0377;
	if (*ma->macro[ma->level] == 0) {	/* Needed for QuoteMode On */
	    ma->level--;
	}
	return 1;
    }

#ifdef DEBUG_READ
    (void) fprintf(el->el_errfile, "Turning raw mode on\n");
#endif /* DEBUG_READ */
    if (tty_rawmode(el) < 0)	/* make sure the tty is set up correctly */
	return 0;

#ifdef DEBUG_READ
    (void) fprintf(el->el_errfile, "Reading a character\n");
#endif /* DEBUG_READ */
    while ((num_read = read(el->el_infd, (char *) &tcp, 1)) == -1)
	if (!tried && read__fixio(el->el_infd, errno) == 0)
	    tried = 1;
	else {
	    *cp = '\0';
	    return -1;
	}
#ifdef DEBUG_READ
    (void) fprintf(el->el_errfile, "Got it %c\n", tcp);
#endif /* DEBUG_READ */
    *cp = tcp;
    return num_read;
}


public const char *
el_gets(el, nread)
    EditLine *el;
    int *nread;
{
    int retval;
    el_action_t  cmdnum = 0;
    int     num;		/* how many chars we have read at NL */
    char    ch;

    if (el->el_flags & HANDLE_SIGNALS)
	sig_set(el);

    re_clear_display(el);		/* reset the display stuff */
    ch_reset(el);

#ifdef FIONREAD
    if (el->el_tty.t_mode == EX_IO && ma->level < 0) {
	long    chrs = 0;

	(void) ioctl(el->el_infd, FIONREAD, (ioctl_t) &chrs);
	if (chrs == 0) {
	    if (tty_rawmode(el) < 0) {
		if (nread)
			*nread = 0;
		return NULL;
	    }
	}
    }
#endif /* FIONREAD */

    re_refresh(el);			/* print the prompt */

    for (num = OKCMD; num == OKCMD;) {	/* while still editing this line */
#ifdef DEBUG_EDIT
	read_debug(el);
#endif /* DEBUG_EDIT */
	/* if EOF or error */
	if ((num = read_getcmd(el, &cmdnum, &ch)) != OKCMD) {
#ifdef DEBUG_READ
	    (void) fprintf(el->el_errfile, "Returning from el_gets %d\n", num);
#endif /* DEBUG_READ */
	    break;
	}

	if (cmdnum >= el->el_map.nfunc) {	/* BUG CHECK command */
#ifdef DEBUG_EDIT
	    (void) fprintf(el->el_errfile, 
			   "ERROR: illegal command from key 0%o\r\n", ch);
#endif /* DEBUG_EDIT */
	    continue;		/* try again */
	}

	/* now do the real command */
#ifdef DEBUG_READ
	{
	    el_bindings_t *b;
	    for (b = el->el_map.help; b->name; b++)
		if (b->func == cmdnum)
		    break;
	    if (b->name)
		(void) fprintf(el->el_errfile, "Executing %s\n", b->name);
	    else
		(void) fprintf(el->el_errfile, "Error command = %d\n", cmdnum);
	}
#endif /* DEBUG_READ */
	retval = (*el->el_map.func[cmdnum])(el, ch);

	/* save the last command here */
	el->el_state.lastcmd = cmdnum;

	/* use any return value */
	switch (retval) {
	case CC_CURSOR:
	    el->el_state.argument = 1;
	    el->el_state.doingarg = 0;
	    re_refresh_cursor(el);
	    break;

	case CC_REFRESH:
	    el->el_state.argument = 1;
	    el->el_state.doingarg = 0;
	    re_refresh(el);
	    break;

	case CC_NORM:		/* normal char */
	    el->el_state.argument = 1;
	    el->el_state.doingarg = 0;
	    break;

	case CC_ARGHACK:	/* Suggested by Rich Salz */
	    /* <rsalz@pineapple.bbn.com> */
	    break;		/* keep going... */

	case CC_EOF:		/* end of file typed */
	    num = 0;
	    break;

	case CC_NEWLINE:	/* normal end of line */
	    num = el->el_line.lastchar - el->el_line.buffer;	
	    break;

	case CC_FATAL:		/* fatal error, reset to known state */
#ifdef DEBUG_READ
	    (void) fprintf(el->el_errfile, "*** editor fatal ERROR ***\r\n\n");
#endif /* DEBUG_READ */
	    /* put (real) cursor in a known place */
	    re_clear_display(el);	/* reset the display stuff */
	    ch_reset(el);		/* reset the input pointers */
	    re_refresh(el);		/* print the prompt again */
	    el->el_state.argument = 1;
	    el->el_state.doingarg = 0;
	    break;

	case CC_ERROR:
	default:		/* functions we don't know about */
#ifdef DEBUG_READ
	    (void) fprintf(el->el_errfile, "*** editor ERROR ***\r\n\n");
#endif /* DEBUG_READ */
	    el->el_state.argument = 1;
	    el->el_state.doingarg = 0;
	    term_beep(el);
	    term__flush();
	    break;
	}
    }

    (void) tty_cookedmode(el);	/* make sure the tty is set up correctly */
    term__flush();		/* flush any buffered output */
    if (el->el_flags & HANDLE_SIGNALS)
	sig_clr(el);
    if (nread)
	    *nread = num;
    return num ? el->el_line.buffer : NULL;
}
Commit	Line	Data
188802ca KB	1	/*-
	2	* Copyright (c) 1992 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Christos Zoulas of Cornell University.
	7	*
	8	* %sccs.include.redist.c%
	9	*/
	10
b6dd18ed CZ	11	#if !defined(lint) && !defined(SCCSID)
b6dd18ed CZ	12	static char sccsid[] = "@(#)read.c 5.2 (Berkeley) %G%";
188802ca	13
b6dd18ed	14	#endif /* not lint && not SCCSID */
188802ca	15	/*
b6dd18ed CZ	16	* read.c: Clean this junk up! This is horrible code.
b6dd18ed CZ	17	* Terminal read functions
188802ca KB	18	*/
	19	#include "sys.h"
	20	#include <sys/errno.h>
	21	#include <unistd.h>
	22	#include <stdlib.h>
	23	extern int errno;
	24	#include "el.h"
	25
	26	#define OKCMD -1
	27
b6dd18ed CZ	28	private int read__fixio __P((int, int));
	29	private int read_preread __P((EditLine *));
	30	private int read_getcmd __P((EditLine , el_action_t , char *));
	31
188802ca KB	32	#ifdef DEBUG_EDIT
	33	private void
	34	read_debug(el)
	35	EditLine *el;
	36	{
	37
	38	if (el->el_line.cursor > el->el_line.lastchar)
	39	(void) fprintf(el->el_errfile, "cursor > lastchar\r\n");
	40	if (el->el_line.cursor < el->el_line.buffer)
	41	(void) fprintf(el->el_errfile, "cursor < buffer\r\n");
	42	if (el->el_line.cursor > el->el_line.limit)
	43	(void) fprintf(el->el_errfile, "cursor > limit\r\n");
	44	if (el->el_line.lastchar > el->el_line.limit)
	45	(void) fprintf(el->el_errfile, "lastchar > limit\r\n");
	46	if (el->el_line.limit != &el->el_line.buffer[EL_BUFSIZ - 2])
	47	(void) fprintf(el->el_errfile, "limit != &buffer[EL_BUFSIZ-2]\r\n");
188802ca	48	}
b6dd18ed	49	#endif /* DEBUG_EDIT */
188802ca	50
b6dd18ed CZ	51	/* read__fixio():
	52	* Try to recover from a read error
	53	*/
	54	private int
	55	read__fixio(fd, e)
	56	int fd, e;
188802ca	57	{
b6dd18ed CZ	58	switch (e) {
b6dd18ed CZ	59	case -1: /* Make sure that the code is reachable */
188802ca	60
b6dd18ed CZ	61	#ifdef EWOULDBLOCK
	62	case EWOULDBLOCK:
	63	# define TRY_AGAIN
	64	#endif /* EWOULDBLOCK */
188802ca	65
b6dd18ed CZ	66	#if defined(POSIX) && defined(EAGAIN)
	67	# if defined(EWOULDBLOCK) && EWOULDBLOCK != EAGAIN
	68	case EAGAIN:
	69	# define TRY_AGAIN
	70	# endif /* EWOULDBLOCK && EWOULDBLOCK != EAGAIN */
	71	#endif /* POSIX && EAGAIN */
	72
	73	e = 0;
	74	#ifdef TRY_AGAIN
	75	# if defined(F_SETFL) && defined(O_NDELAY)
	76	if ((e = fcntl(fd, F_GETFL, 0)) == -1)
	77	return -1;
	78
	79	if (fcntl(fd, F_SETFL, e & ~O_NDELAY) == -1)
	80	return -1;
	81	else
	82	e = 1;
	83	# endif /* F_SETFL && O_NDELAY */
	84
	85	# ifdef FIONBIO
	86	if (ioctl(fd, FIONBIO, (ioctl_t) &e) == -1)
	87	return -1;
	88	else
	89	e = 1;
	90	# endif /* FIONBIO */
	91
	92	#endif /* TRY_AGAIN */
	93	return e ? 0 : -1;
	94
	95	case EINTR:
	96	return 0;
	97
	98	default:
	99	return -1;
	100	}
	101	}
	102
	103
	104	/* read_preread():
	105	* Try to read the stuff in the input queue;
	106	*/
	107	private int
	108	read_preread(el)
	109	EditLine *el;
	110	{
	111	int chrs = 0;
	112
	113	if (el->el_chared.c_macro.nline) {
	114	el_free((ptr_t) el->el_chared.c_macro.nline);
	115	el->el_chared.c_macro.nline = NULL;
	116	}
	117
	118	if (el->el_tty.t_mode == ED_IO)
188802ca KB	119	return 0;
	120
	121	#ifdef FIONREAD
b6dd18ed	122	(void) ioctl(el->el_infd, FIONREAD, (ioctl_t) &chrs);
188802ca	123	if (chrs > 0) {
b6dd18ed	124	char buf[EL_BUFSIZ];
188802ca	125
b6dd18ed	126	chrs = read(el->el_infd, buf, (size_t) MIN(chrs, EL_BUFSIZ - 1));
188802ca KB	127	if (chrs > 0) {
188802ca KB	128	buf[chrs] = '\0';
b6dd18ed CZ	129	el->el_chared.c_macro.nline = strdup(buf);
b6dd18ed CZ	130	el_push(el->el_chared.c_macro.nline);
188802ca KB	131	}
	132	}
	133	#endif /* FIONREAD */
b6dd18ed	134
188802ca KB	135	return chrs > 0;
188802ca KB	136	}
188802ca KB	137
	138
	139	/* el_push():
	140	* Push a macro
	141	*/
	142	public void
	143	el_push(el, str)
	144	EditLine *el;
	145	const char *str;
	146	{
	147	c_macro_t *ma = &el->el_chared.c_macro;
	148
	149	if (str != NULL && ma->level + 1 < EL_MAXMACRO) {
	150	ma->level++;
	151	ma->macro[ma->level] = (char *) str;
	152	}
	153	else {
	154	term_beep(el);
	155	term__flush();
	156	}
	157	}
	158
b6dd18ed CZ	159
	160	/* read_getcmd():
	161	* Return next command from the input stream.
	162	*/
188802ca	163	private int
b6dd18ed	164	read_getcmd(el, cmdnum, ch)
188802ca KB	165	EditLine *el;
	166	el_action_t *cmdnum;
	167	char *ch;
	168	{
	169	el_action_t cmd = 0;
	170	int num;
	171
	172	while (cmd == 0 \|\| cmd == ED_SEQUENCE_LEAD_IN) {
	173	if ((num = el_getc(el, ch)) != 1) /* if EOF or error */
	174	return num;
	175
	176	#ifdef KANJI
	177	if ((*ch & 0200)) {
	178	el->el_state.metanext = 0;
	179	cmd = CcViMap[' '];
	180	break;
	181	}
	182	else
	183	#endif /* KANJI */
	184
	185	if (el->el_state.metanext) {
	186	el->el_state.metanext = 0;
	187	*ch \|= 0200;
	188	}
	189	cmd = el->el_map.current[(unsigned char) *ch];
	190	if (cmd == ED_SEQUENCE_LEAD_IN) {
	191	key_value_t val;
	192	switch (key_get(el, ch, &val)) {
	193	case XK_CMD:
	194	cmd = val.cmd;
	195	break;
	196	case XK_STR:
	197	el_push(el, val.str);
	198	break;
	199	#ifdef notyet
	200	case XK_EXE:
	201	/* XXX: In the future to run a user function */
	202	RunCommand(val.str);
	203	break;
	204	#endif
	205	default:
	206	abort();
	207	break;
	208	}
	209	}
	210	if (el->el_map.alt == NULL)
	211	el->el_map.current = el->el_map.key;
	212	}
	213	*cmdnum = cmd;
	214	return OKCMD;
	215	}
	216
	217
	218	/* el_getc():
	219	* Read a character
	220	*/
	221	public int
	222	el_getc(el, cp)
	223	EditLine *el;
	224	char *cp;
	225	{
	226	int num_read;
188802ca	227	unsigned char tcp;
b6dd18ed	228	int tried = 0;
188802ca KB	229
	230	c_macro_t *ma = &el->el_chared.c_macro;
	231
	232	term__flush();
	233	for (;;) {
188802ca	234	if (ma->level < 0) {
b6dd18ed	235	if (!read_preread(el))
188802ca KB	236	break;
188802ca KB	237	}
188802ca KB	238	if (ma->level < 0)
	239	break;
	240
	241	if (*ma->macro[ma->level] == 0) {
	242	ma->level--;
	243	continue;
	244	}
	245	cp = ma->macro[ma->level]++ & 0377;
	246	if (ma->macro[ma->level] == 0) { / Needed for QuoteMode On */
	247	ma->level--;
	248	}
	249	return 1;
	250	}
	251
	252	#ifdef DEBUG_READ
	253	(void) fprintf(el->el_errfile, "Turning raw mode on\n");
b6dd18ed	254	#endif /* DEBUG_READ */
188802ca	255	if (tty_rawmode(el) < 0) /* make sure the tty is set up correctly */
b6dd18ed	256	return 0;
188802ca KB	257
	258	#ifdef DEBUG_READ
	259	(void) fprintf(el->el_errfile, "Reading a character\n");
b6dd18ed	260	#endif /* DEBUG_READ */
188802ca	261	while ((num_read = read(el->el_infd, (char *) &tcp, 1)) == -1)
b6dd18ed CZ	262	if (!tried && read__fixio(el->el_infd, errno) == 0)
	263	tried = 1;
	264	else {
	265	*cp = '\0';
	266	return -1;
188802ca KB	267	}
	268	#ifdef DEBUG_READ
	269	(void) fprintf(el->el_errfile, "Got it %c\n", tcp);
b6dd18ed	270	#endif /* DEBUG_READ */
188802ca KB	271	*cp = tcp;
	272	return num_read;
	273	}
	274
	275
	276
	277	public const char *
	278	el_gets(el, nread)
	279	EditLine *el;
	280	int *nread;
	281	{
	282	int retval;
	283	el_action_t cmdnum = 0;
	284	int num; /* how many chars we have read at NL */
	285	char ch;
	286
	287	if (el->el_flags & HANDLE_SIGNALS)
	288	sig_set(el);
	289
	290	re_clear_display(el); /* reset the display stuff */
	291	ch_reset(el);
	292
188802ca	293	#ifdef FIONREAD
b6dd18ed	294	if (el->el_tty.t_mode == EX_IO && ma->level < 0) {
188802ca KB	295	long chrs = 0;
188802ca KB	296
b6dd18ed	297	(void) ioctl(el->el_infd, FIONREAD, (ioctl_t) &chrs);
188802ca KB	298	if (chrs == 0) {
	299	if (tty_rawmode(el) < 0) {
	300	if (nread)
	301	*nread = 0;
	302	return NULL;
	303	}
	304	}
	305	}
b6dd18ed	306	#endif /* FIONREAD */
188802ca KB	307
	308	re_refresh(el); /* print the prompt */
	309
	310	for (num = OKCMD; num == OKCMD;) { /* while still editing this line */
	311	#ifdef DEBUG_EDIT
	312	read_debug(el);
b6dd18ed	313	#endif /* DEBUG_EDIT */
188802ca	314	/* if EOF or error */
b6dd18ed	315	if ((num = read_getcmd(el, &cmdnum, &ch)) != OKCMD) {
188802ca KB	316	#ifdef DEBUG_READ
188802ca KB	317	(void) fprintf(el->el_errfile, "Returning from el_gets %d\n", num);
b6dd18ed	318	#endif /* DEBUG_READ */
188802ca KB	319	break;
	320	}
	321
	322	if (cmdnum >= el->el_map.nfunc) { /* BUG CHECK command */
	323	#ifdef DEBUG_EDIT
b6dd18ed CZ	324	(void) fprintf(el->el_errfile,
	325	"ERROR: illegal command from key 0%o\r\n", ch);
	326	#endif /* DEBUG_EDIT */
188802ca KB	327	continue; /* try again */
	328	}
	329
	330	/* now do the real command */
	331	#ifdef DEBUG_READ
	332	{
	333	el_bindings_t *b;
	334	for (b = el->el_map.help; b->name; b++)
	335	if (b->func == cmdnum)
	336	break;
	337	if (b->name)
	338	(void) fprintf(el->el_errfile, "Executing %s\n", b->name);
	339	else
	340	(void) fprintf(el->el_errfile, "Error command = %d\n", cmdnum);
	341	}
b6dd18ed	342	#endif /* DEBUG_READ */
188802ca KB	343	retval = (*el->el_map.func[cmdnum])(el, ch);
	344
	345	/* save the last command here */
	346	el->el_state.lastcmd = cmdnum;
	347
	348	/* use any return value */
	349	switch (retval) {
	350	case CC_CURSOR:
	351	el->el_state.argument = 1;
	352	el->el_state.doingarg = 0;
	353	re_refresh_cursor(el);
	354	break;
	355
	356	case CC_REFRESH:
	357	el->el_state.argument = 1;
	358	el->el_state.doingarg = 0;
	359	re_refresh(el);
	360	break;
	361
	362	case CC_NORM: /* normal char */
	363	el->el_state.argument = 1;
	364	el->el_state.doingarg = 0;
	365	break;
	366
	367	case CC_ARGHACK: /* Suggested by Rich Salz */
	368	/* <rsalz@pineapple.bbn.com> */
	369	break; /* keep going... */
	370
	371	case CC_EOF: /* end of file typed */
	372	num = 0;
	373	break;
	374
	375	case CC_NEWLINE: /* normal end of line */
	376	num = el->el_line.lastchar - el->el_line.buffer;
188802ca KB	377	break;
	378
	379	case CC_FATAL: /* fatal error, reset to known state */
	380	#ifdef DEBUG_READ
	381	(void) fprintf(el->el_errfile, "* editor fatal ERROR *\r\n\n");
	382	#endif /* DEBUG_READ */
	383	/* put (real) cursor in a known place */
	384	re_clear_display(el); /* reset the display stuff */
	385	ch_reset(el); /* reset the input pointers */
	386	re_refresh(el); /* print the prompt again */
	387	el->el_state.argument = 1;
	388	el->el_state.doingarg = 0;
	389	break;
	390
	391	case CC_ERROR:
	392	default: /* functions we don't know about */
	393	#ifdef DEBUG_READ
	394	(void) fprintf(el->el_errfile, "* editor ERROR *\r\n\n");
b6dd18ed	395	#endif /* DEBUG_READ */
188802ca KB	396	el->el_state.argument = 1;
	397	el->el_state.doingarg = 0;
	398	term_beep(el);
	399	term__flush();
	400	break;
	401	}
	402	}
	403
	404	(void) tty_cookedmode(el); /* make sure the tty is set up correctly */
	405	term__flush(); /* flush any buffered output */
	406	if (el->el_flags & HANDLE_SIGNALS)
	407	sig_clr(el);
	408	if (nread)
	409	*nread = num;
	410	return num ? el->el_line.buffer : NULL;
	411	}