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el.c revision 1.47
      1  1.47     lukem /*	$NetBSD: el.c,v 1.47 2009/01/18 12:17:24 lukem Exp $	*/
      2   1.2     lukem 
      3   1.1       cgd /*-
      4   1.1       cgd  * Copyright (c) 1992, 1993
      5   1.1       cgd  *	The Regents of the University of California.  All rights reserved.
      6   1.1       cgd  *
      7   1.1       cgd  * This code is derived from software contributed to Berkeley by
      8   1.1       cgd  * Christos Zoulas of Cornell University.
      9   1.1       cgd  *
     10   1.1       cgd  * Redistribution and use in source and binary forms, with or without
     11   1.1       cgd  * modification, are permitted provided that the following conditions
     12   1.1       cgd  * are met:
     13   1.1       cgd  * 1. Redistributions of source code must retain the above copyright
     14   1.1       cgd  *    notice, this list of conditions and the following disclaimer.
     15   1.1       cgd  * 2. Redistributions in binary form must reproduce the above copyright
     16   1.1       cgd  *    notice, this list of conditions and the following disclaimer in the
     17   1.1       cgd  *    documentation and/or other materials provided with the distribution.
     18  1.32       agc  * 3. Neither the name of the University nor the names of its contributors
     19   1.1       cgd  *    may be used to endorse or promote products derived from this software
     20   1.1       cgd  *    without specific prior written permission.
     21   1.1       cgd  *
     22   1.1       cgd  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23   1.1       cgd  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24   1.1       cgd  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25   1.1       cgd  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26   1.1       cgd  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27   1.1       cgd  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28   1.1       cgd  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29   1.1       cgd  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30   1.1       cgd  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31   1.1       cgd  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32   1.1       cgd  * SUCH DAMAGE.
     33   1.1       cgd  */
     34   1.1       cgd 
     35  1.29  christos #include "config.h"
     36   1.1       cgd #if !defined(lint) && !defined(SCCSID)
     37   1.2     lukem #if 0
     38   1.1       cgd static char sccsid[] = "@(#)el.c	8.2 (Berkeley) 1/3/94";
     39   1.2     lukem #else
     40  1.47     lukem __RCSID("$NetBSD: el.c,v 1.47 2009/01/18 12:17:24 lukem Exp $");
     41   1.2     lukem #endif
     42   1.1       cgd #endif /* not lint && not SCCSID */
     43   1.1       cgd 
     44   1.1       cgd /*
     45   1.1       cgd  * el.c: EditLine interface functions
     46   1.1       cgd  */
     47   1.1       cgd #include <sys/types.h>
     48   1.1       cgd #include <sys/param.h>
     49   1.1       cgd #include <string.h>
     50   1.1       cgd #include <stdlib.h>
     51  1.19     lukem #include <stdarg.h>
     52   1.1       cgd #include "el.h"
     53   1.1       cgd 
     54   1.1       cgd /* el_init():
     55   1.1       cgd  *	Initialize editline and set default parameters.
     56   1.1       cgd  */
     57   1.1       cgd public EditLine *
     58  1.19     lukem el_init(const char *prog, FILE *fin, FILE *fout, FILE *ferr)
     59   1.1       cgd {
     60  1.18     chuck 
     61  1.19     lukem 	EditLine *el = (EditLine *) el_malloc(sizeof(EditLine));
     62   1.1       cgd 
     63  1.19     lukem 	if (el == NULL)
     64  1.19     lukem 		return (NULL);
     65   1.1       cgd 
     66  1.19     lukem 	memset(el, 0, sizeof(EditLine));
     67   1.1       cgd 
     68  1.44  christos 	el->el_infile = fin;
     69  1.19     lukem 	el->el_outfile = fout;
     70  1.19     lukem 	el->el_errfile = ferr;
     71  1.44  christos 
     72  1.44  christos 	el->el_infd = fileno(fin);
     73  1.44  christos 
     74  1.36  christos 	if ((el->el_prog = el_strdup(prog)) == NULL) {
     75  1.36  christos 		el_free(el);
     76  1.36  christos 		return NULL;
     77  1.36  christos 	}
     78  1.19     lukem 
     79  1.19     lukem 	/*
     80  1.19     lukem          * Initialize all the modules. Order is important!!!
     81  1.19     lukem          */
     82  1.19     lukem 	el->el_flags = 0;
     83  1.19     lukem 
     84  1.25  christos 	if (term_init(el) == -1) {
     85  1.36  christos 		el_free(el->el_prog);
     86  1.25  christos 		el_free(el);
     87  1.25  christos 		return NULL;
     88  1.25  christos 	}
     89  1.19     lukem 	(void) key_init(el);
     90  1.19     lukem 	(void) map_init(el);
     91  1.19     lukem 	if (tty_init(el) == -1)
     92  1.19     lukem 		el->el_flags |= NO_TTY;
     93  1.19     lukem 	(void) ch_init(el);
     94  1.19     lukem 	(void) search_init(el);
     95  1.19     lukem 	(void) hist_init(el);
     96  1.19     lukem 	(void) prompt_init(el);
     97  1.19     lukem 	(void) sig_init(el);
     98  1.23  christos 	(void) read_init(el);
     99   1.1       cgd 
    100  1.19     lukem 	return (el);
    101  1.19     lukem }
    102   1.1       cgd 
    103   1.1       cgd 
    104   1.1       cgd /* el_end():
    105   1.1       cgd  *	Clean up.
    106   1.1       cgd  */
    107   1.1       cgd public void
    108  1.19     lukem el_end(EditLine *el)
    109   1.1       cgd {
    110   1.1       cgd 
    111  1.19     lukem 	if (el == NULL)
    112  1.19     lukem 		return;
    113   1.1       cgd 
    114  1.19     lukem 	el_reset(el);
    115  1.19     lukem 
    116  1.19     lukem 	term_end(el);
    117  1.19     lukem 	key_end(el);
    118  1.19     lukem 	map_end(el);
    119  1.19     lukem 	tty_end(el);
    120  1.19     lukem 	ch_end(el);
    121  1.19     lukem 	search_end(el);
    122  1.19     lukem 	hist_end(el);
    123  1.19     lukem 	prompt_end(el);
    124  1.19     lukem 	sig_end(el);
    125  1.19     lukem 
    126  1.19     lukem 	el_free((ptr_t) el->el_prog);
    127  1.19     lukem 	el_free((ptr_t) el);
    128  1.19     lukem }
    129   1.1       cgd 
    130   1.1       cgd 
    131   1.1       cgd /* el_reset():
    132   1.1       cgd  *	Reset the tty and the parser
    133   1.1       cgd  */
    134   1.1       cgd public void
    135  1.19     lukem el_reset(EditLine *el)
    136   1.1       cgd {
    137  1.19     lukem 
    138  1.19     lukem 	tty_cookedmode(el);
    139  1.40  christos 	ch_reset(el, 0);		/* XXX: Do we want that? */
    140   1.1       cgd }
    141   1.1       cgd 
    142   1.1       cgd 
    143   1.1       cgd /* el_set():
    144   1.1       cgd  *	set the editline parameters
    145   1.1       cgd  */
    146   1.1       cgd public int
    147   1.1       cgd el_set(EditLine *el, int op, ...)
    148   1.1       cgd {
    149  1.44  christos 	va_list ap;
    150  1.27  christos 	int rv = 0;
    151   1.1       cgd 
    152  1.19     lukem 	if (el == NULL)
    153  1.19     lukem 		return (-1);
    154  1.44  christos 	va_start(ap, op);
    155  1.22       wiz 
    156  1.19     lukem 	switch (op) {
    157  1.19     lukem 	case EL_PROMPT:
    158  1.19     lukem 	case EL_RPROMPT:
    159  1.44  christos 		rv = prompt_set(el, va_arg(ap, el_pfunc_t), op);
    160  1.19     lukem 		break;
    161  1.13    simonb 
    162  1.19     lukem 	case EL_TERMINAL:
    163  1.44  christos 		rv = term_set(el, va_arg(ap, char *));
    164  1.19     lukem 		break;
    165   1.1       cgd 
    166  1.19     lukem 	case EL_EDITOR:
    167  1.44  christos 		rv = map_set_editor(el, va_arg(ap, char *));
    168   1.1       cgd 		break;
    169   1.1       cgd 
    170  1.19     lukem 	case EL_SIGNAL:
    171  1.44  christos 		if (va_arg(ap, int))
    172  1.19     lukem 			el->el_flags |= HANDLE_SIGNALS;
    173  1.19     lukem 		else
    174  1.19     lukem 			el->el_flags &= ~HANDLE_SIGNALS;
    175   1.1       cgd 		break;
    176   1.1       cgd 
    177  1.19     lukem 	case EL_BIND:
    178  1.19     lukem 	case EL_TELLTC:
    179  1.19     lukem 	case EL_SETTC:
    180  1.42  christos 	case EL_GETTC:
    181  1.19     lukem 	case EL_ECHOTC:
    182  1.19     lukem 	case EL_SETTY:
    183  1.19     lukem 	{
    184  1.29  christos 		const char *argv[20];
    185  1.19     lukem 		int i;
    186  1.19     lukem 
    187  1.19     lukem 		for (i = 1; i < 20; i++)
    188  1.44  christos 			if ((argv[i] = va_arg(ap, char *)) == NULL)
    189  1.19     lukem 				break;
    190  1.19     lukem 
    191  1.19     lukem 		switch (op) {
    192  1.19     lukem 		case EL_BIND:
    193  1.19     lukem 			argv[0] = "bind";
    194  1.19     lukem 			rv = map_bind(el, i, argv);
    195  1.19     lukem 			break;
    196  1.19     lukem 
    197  1.19     lukem 		case EL_TELLTC:
    198  1.19     lukem 			argv[0] = "telltc";
    199  1.19     lukem 			rv = term_telltc(el, i, argv);
    200  1.19     lukem 			break;
    201  1.19     lukem 
    202  1.19     lukem 		case EL_SETTC:
    203  1.19     lukem 			argv[0] = "settc";
    204  1.19     lukem 			rv = term_settc(el, i, argv);
    205  1.19     lukem 			break;
    206  1.19     lukem 
    207  1.19     lukem 		case EL_ECHOTC:
    208  1.19     lukem 			argv[0] = "echotc";
    209  1.19     lukem 			rv = term_echotc(el, i, argv);
    210  1.19     lukem 			break;
    211  1.19     lukem 
    212  1.19     lukem 		case EL_SETTY:
    213  1.19     lukem 			argv[0] = "setty";
    214  1.19     lukem 			rv = tty_stty(el, i, argv);
    215  1.19     lukem 			break;
    216  1.19     lukem 
    217  1.19     lukem 		default:
    218  1.19     lukem 			rv = -1;
    219  1.20  christos 			EL_ABORT((el->el_errfile, "Bad op %d\n", op));
    220  1.19     lukem 			break;
    221  1.19     lukem 		}
    222   1.1       cgd 		break;
    223  1.19     lukem 	}
    224  1.19     lukem 
    225  1.19     lukem 	case EL_ADDFN:
    226  1.19     lukem 	{
    227  1.44  christos 		char *name = va_arg(ap, char *);
    228  1.44  christos 		char *help = va_arg(ap, char *);
    229  1.44  christos 		el_func_t func = va_arg(ap, el_func_t);
    230   1.1       cgd 
    231  1.19     lukem 		rv = map_addfunc(el, name, help, func);
    232   1.1       cgd 		break;
    233  1.19     lukem 	}
    234  1.19     lukem 
    235  1.19     lukem 	case EL_HIST:
    236  1.19     lukem 	{
    237  1.44  christos 		hist_fun_t func = va_arg(ap, hist_fun_t);
    238  1.44  christos 		ptr_t ptr = va_arg(ap, char *);
    239   1.1       cgd 
    240  1.19     lukem 		rv = hist_set(el, func, ptr);
    241   1.1       cgd 		break;
    242  1.19     lukem 	}
    243   1.1       cgd 
    244  1.19     lukem 	case EL_EDITMODE:
    245  1.44  christos 		if (va_arg(ap, int))
    246  1.19     lukem 			el->el_flags &= ~EDIT_DISABLED;
    247  1.19     lukem 		else
    248  1.19     lukem 			el->el_flags |= EDIT_DISABLED;
    249  1.19     lukem 		rv = 0;
    250   1.1       cgd 		break;
    251  1.13    simonb 
    252  1.23  christos 	case EL_GETCFN:
    253  1.23  christos 	{
    254  1.44  christos 		el_rfunc_t rc = va_arg(ap, el_rfunc_t);
    255  1.23  christos 		rv = el_read_setfn(el, rc);
    256  1.23  christos 		break;
    257  1.23  christos 	}
    258  1.23  christos 
    259  1.24  christos 	case EL_CLIENTDATA:
    260  1.44  christos 		el->el_data = va_arg(ap, void *);
    261  1.24  christos 		break;
    262  1.24  christos 
    263  1.34  christos 	case EL_UNBUFFERED:
    264  1.44  christos 		rv = va_arg(ap, int);
    265  1.34  christos 		if (rv && !(el->el_flags & UNBUFFERED)) {
    266  1.34  christos 			el->el_flags |= UNBUFFERED;
    267  1.34  christos 			read_prepare(el);
    268  1.34  christos 		} else if (!rv && (el->el_flags & UNBUFFERED)) {
    269  1.34  christos 			el->el_flags &= ~UNBUFFERED;
    270  1.34  christos 			read_finish(el);
    271  1.34  christos 		}
    272  1.35  christos 		rv = 0;
    273  1.35  christos 		break;
    274  1.35  christos 
    275  1.35  christos 	case EL_PREP_TERM:
    276  1.44  christos 		rv = va_arg(ap, int);
    277  1.35  christos 		if (rv)
    278  1.38  christos 			(void) tty_rawmode(el);
    279  1.35  christos 		else
    280  1.38  christos 			(void) tty_cookedmode(el);
    281  1.34  christos 		rv = 0;
    282  1.34  christos 		break;
    283  1.34  christos 
    284  1.44  christos 	case EL_SETFP:
    285  1.44  christos 	{
    286  1.44  christos 		FILE *fp;
    287  1.44  christos 		int what;
    288  1.44  christos 
    289  1.44  christos 		what = va_arg(ap, int);
    290  1.44  christos 		fp = va_arg(ap, FILE *);
    291  1.44  christos 
    292  1.44  christos 		rv = 0;
    293  1.44  christos 		switch (what) {
    294  1.44  christos 		case 0:
    295  1.44  christos 			el->el_infile = fp;
    296  1.44  christos 			el->el_infd = fileno(fp);
    297  1.44  christos 			break;
    298  1.44  christos 		case 1:
    299  1.44  christos 			el->el_outfile = fp;
    300  1.44  christos 			break;
    301  1.44  christos 		case 2:
    302  1.44  christos 			el->el_errfile = fp;
    303  1.44  christos 			break;
    304  1.44  christos 		default:
    305  1.44  christos 			rv = -1;
    306  1.44  christos 			break;
    307  1.44  christos 		}
    308  1.44  christos 		break;
    309  1.44  christos 	}
    310  1.44  christos 
    311  1.45  christos 	case EL_REFRESH:
    312  1.45  christos 		re_clear_display(el);
    313  1.45  christos 		re_refresh(el);
    314  1.46  christos 		term__flush(el);
    315  1.45  christos 		break;
    316  1.45  christos 
    317  1.19     lukem 	default:
    318  1.19     lukem 		rv = -1;
    319  1.27  christos 		break;
    320   1.1       cgd 	}
    321   1.1       cgd 
    322  1.44  christos 	va_end(ap);
    323  1.19     lukem 	return (rv);
    324  1.19     lukem }
    325   1.1       cgd 
    326   1.1       cgd 
    327  1.10     lukem /* el_get():
    328  1.10     lukem  *	retrieve the editline parameters
    329  1.10     lukem  */
    330  1.10     lukem public int
    331  1.42  christos el_get(EditLine *el, int op, ...)
    332  1.10     lukem {
    333  1.42  christos 	va_list ap;
    334  1.19     lukem 	int rv;
    335  1.10     lukem 
    336  1.42  christos 	if (el == NULL)
    337  1.42  christos 		return -1;
    338  1.42  christos 
    339  1.42  christos 	va_start(ap, op);
    340  1.42  christos 
    341  1.19     lukem 	switch (op) {
    342  1.19     lukem 	case EL_PROMPT:
    343  1.19     lukem 	case EL_RPROMPT:
    344  1.42  christos 		rv = prompt_get(el, va_arg(ap, el_pfunc_t *), op);
    345  1.19     lukem 		break;
    346  1.10     lukem 
    347  1.19     lukem 	case EL_EDITOR:
    348  1.42  christos 		rv = map_get_editor(el, va_arg(ap, const char **));
    349  1.10     lukem 		break;
    350  1.10     lukem 
    351  1.19     lukem 	case EL_SIGNAL:
    352  1.42  christos 		*va_arg(ap, int *) = (el->el_flags & HANDLE_SIGNALS);
    353  1.19     lukem 		rv = 0;
    354  1.10     lukem 		break;
    355  1.10     lukem 
    356  1.19     lukem 	case EL_EDITMODE:
    357  1.42  christos 		*va_arg(ap, int *) = !(el->el_flags & EDIT_DISABLED);
    358  1.19     lukem 		rv = 0;
    359  1.10     lukem 		break;
    360  1.10     lukem 
    361  1.19     lukem 	case EL_TERMINAL:
    362  1.42  christos 		term_get(el, va_arg(ap, const char **));
    363  1.33  christos 		rv = 0;
    364  1.10     lukem 		break;
    365  1.10     lukem 
    366  1.42  christos 	case EL_GETTC:
    367  1.19     lukem 	{
    368  1.42  christos 		static char name[] = "gettc";
    369  1.42  christos 		char *argv[20];
    370  1.19     lukem 		int i;
    371  1.10     lukem 
    372  1.47     lukem  		for (i = 1; i < (int)(sizeof(argv) / sizeof(argv[0])); i++)
    373  1.42  christos 			if ((argv[i] = va_arg(ap, char *)) == NULL)
    374  1.19     lukem 				break;
    375  1.19     lukem 
    376  1.19     lukem 		switch (op) {
    377  1.42  christos 		case EL_GETTC:
    378  1.42  christos 			argv[0] = name;
    379  1.42  christos 			rv = term_gettc(el, i, argv);
    380  1.19     lukem 			break;
    381  1.19     lukem 
    382  1.19     lukem 		default:
    383  1.19     lukem 			rv = -1;
    384  1.43     freza 			EL_ABORT((el->el_errfile, "Bad op %d\n", op));
    385  1.19     lukem 			break;
    386  1.19     lukem 		}
    387  1.10     lukem 		break;
    388  1.10     lukem 	}
    389  1.13    simonb 
    390  1.42  christos #if 0 /* XXX */
    391  1.19     lukem 	case EL_ADDFN:
    392  1.10     lukem 	{
    393  1.44  christos 		char *name = va_arg(ap, char *);
    394  1.44  christos 		char *help = va_arg(ap, char *);
    395  1.44  christos 		el_func_t func = va_arg(ap, el_func_t);
    396  1.19     lukem 
    397  1.19     lukem 		rv = map_addfunc(el, name, help, func);
    398  1.19     lukem 		break;
    399  1.10     lukem 	}
    400  1.10     lukem 
    401  1.19     lukem 	case EL_HIST:
    402  1.19     lukem 		{
    403  1.44  christos 			hist_fun_t func = va_arg(ap, hist_fun_t);
    404  1.44  christos 			ptr_t ptr = va_arg(ap, char *);
    405  1.19     lukem 			rv = hist_set(el, func, ptr);
    406  1.19     lukem 		}
    407  1.19     lukem 		break;
    408  1.19     lukem #endif /* XXX */
    409  1.23  christos 
    410  1.23  christos 	case EL_GETCFN:
    411  1.42  christos 		*va_arg(ap, el_rfunc_t *) = el_read_getfn(el);
    412  1.24  christos 		rv = 0;
    413  1.24  christos 		break;
    414  1.24  christos 
    415  1.24  christos 	case EL_CLIENTDATA:
    416  1.42  christos 		*va_arg(ap, void **) = el->el_data;
    417  1.34  christos 		rv = 0;
    418  1.34  christos 		break;
    419  1.34  christos 
    420  1.34  christos 	case EL_UNBUFFERED:
    421  1.42  christos 		*va_arg(ap, int *) = (!(el->el_flags & UNBUFFERED));
    422  1.23  christos 		rv = 0;
    423  1.23  christos 		break;
    424  1.19     lukem 
    425  1.44  christos 	case EL_GETFP:
    426  1.44  christos 	{
    427  1.44  christos 		int what;
    428  1.44  christos 		FILE **fpp;
    429  1.44  christos 
    430  1.44  christos 		what = va_arg(ap, int);
    431  1.44  christos 		fpp = va_arg(ap, FILE **);
    432  1.44  christos 		rv = 0;
    433  1.44  christos 		switch (what) {
    434  1.44  christos 		case 0:
    435  1.44  christos 			*fpp = el->el_infile;
    436  1.44  christos 			break;
    437  1.44  christos 		case 1:
    438  1.44  christos 			*fpp = el->el_outfile;
    439  1.44  christos 			break;
    440  1.44  christos 		case 2:
    441  1.44  christos 			*fpp = el->el_errfile;
    442  1.44  christos 			break;
    443  1.44  christos 		default:
    444  1.44  christos 			rv = -1;
    445  1.44  christos 			break;
    446  1.44  christos 		}
    447  1.44  christos 		break;
    448  1.44  christos 	}
    449  1.19     lukem 	default:
    450  1.19     lukem 		rv = -1;
    451  1.44  christos 		break;
    452  1.19     lukem 	}
    453  1.42  christos 	va_end(ap);
    454  1.10     lukem 
    455  1.19     lukem 	return (rv);
    456  1.19     lukem }
    457  1.10     lukem 
    458  1.10     lukem 
    459   1.1       cgd /* el_line():
    460   1.1       cgd  *	Return editing info
    461   1.1       cgd  */
    462   1.1       cgd public const LineInfo *
    463  1.19     lukem el_line(EditLine *el)
    464   1.1       cgd {
    465  1.19     lukem 
    466  1.19     lukem 	return (const LineInfo *) (void *) &el->el_line;
    467   1.1       cgd }
    468   1.1       cgd 
    469   1.1       cgd 
    470   1.1       cgd /* el_source():
    471   1.1       cgd  *	Source a file
    472   1.1       cgd  */
    473   1.1       cgd public int
    474  1.19     lukem el_source(EditLine *el, const char *fname)
    475   1.1       cgd {
    476  1.19     lukem 	FILE *fp;
    477  1.19     lukem 	size_t len;
    478  1.27  christos 	char *ptr;
    479  1.19     lukem 
    480  1.19     lukem 	fp = NULL;
    481  1.19     lukem 	if (fname == NULL) {
    482  1.29  christos #ifdef HAVE_ISSETUGID
    483  1.27  christos 		static const char elpath[] = "/.editrc";
    484  1.27  christos 		char path[MAXPATHLEN];
    485  1.27  christos 
    486  1.19     lukem 		if (issetugid())
    487  1.19     lukem 			return (-1);
    488  1.19     lukem 		if ((ptr = getenv("HOME")) == NULL)
    489  1.19     lukem 			return (-1);
    490  1.19     lukem 		if (strlcpy(path, ptr, sizeof(path)) >= sizeof(path))
    491  1.19     lukem 			return (-1);
    492  1.19     lukem 		if (strlcat(path, elpath, sizeof(path)) >= sizeof(path))
    493  1.19     lukem 			return (-1);
    494  1.19     lukem 		fname = path;
    495  1.27  christos #else
    496  1.27  christos 		/*
    497  1.27  christos 		 * If issetugid() is missing, always return an error, in order
    498  1.27  christos 		 * to keep from inadvertently opening up the user to a security
    499  1.27  christos 		 * hole.
    500  1.27  christos 		 */
    501  1.27  christos 		return (-1);
    502  1.27  christos #endif
    503  1.19     lukem 	}
    504  1.19     lukem 	if (fp == NULL)
    505  1.19     lukem 		fp = fopen(fname, "r");
    506  1.19     lukem 	if (fp == NULL)
    507  1.19     lukem 		return (-1);
    508  1.19     lukem 
    509  1.19     lukem 	while ((ptr = fgetln(fp, &len)) != NULL) {
    510  1.19     lukem 		if (len > 0 && ptr[len - 1] == '\n')
    511  1.19     lukem 			--len;
    512  1.19     lukem 		ptr[len] = '\0';
    513  1.19     lukem 		if (parse_line(el, ptr) == -1) {
    514  1.19     lukem 			(void) fclose(fp);
    515  1.19     lukem 			return (-1);
    516  1.19     lukem 		}
    517   1.1       cgd 	}
    518   1.1       cgd 
    519  1.19     lukem 	(void) fclose(fp);
    520  1.19     lukem 	return (0);
    521   1.1       cgd }
    522   1.1       cgd 
    523   1.1       cgd 
    524   1.1       cgd /* el_resize():
    525   1.1       cgd  *	Called from program when terminal is resized
    526   1.1       cgd  */
    527   1.1       cgd public void
    528  1.19     lukem el_resize(EditLine *el)
    529   1.1       cgd {
    530  1.19     lukem 	int lins, cols;
    531  1.19     lukem 	sigset_t oset, nset;
    532  1.19     lukem 
    533  1.19     lukem 	(void) sigemptyset(&nset);
    534  1.19     lukem 	(void) sigaddset(&nset, SIGWINCH);
    535  1.19     lukem 	(void) sigprocmask(SIG_BLOCK, &nset, &oset);
    536  1.19     lukem 
    537  1.19     lukem 	/* get the correct window size */
    538  1.19     lukem 	if (term_get_size(el, &lins, &cols))
    539  1.19     lukem 		term_change_size(el, lins, cols);
    540   1.1       cgd 
    541  1.19     lukem 	(void) sigprocmask(SIG_SETMASK, &oset, NULL);
    542   1.9  christos }
    543  1.14     lukem 
    544   1.9  christos 
    545   1.9  christos /* el_beep():
    546   1.9  christos  *	Called from the program to beep
    547   1.9  christos  */
    548   1.9  christos public void
    549  1.19     lukem el_beep(EditLine *el)
    550   1.9  christos {
    551  1.19     lukem 
    552  1.19     lukem 	term_beep(el);
    553   1.1       cgd }
    554  1.10     lukem 
    555  1.10     lukem 
    556  1.10     lukem /* el_editmode()
    557  1.10     lukem  *	Set the state of EDIT_DISABLED from the `edit' command.
    558  1.10     lukem  */
    559  1.10     lukem protected int
    560  1.10     lukem /*ARGSUSED*/
    561  1.29  christos el_editmode(EditLine *el, int argc, const char **argv)
    562  1.10     lukem {
    563  1.19     lukem 	const char *how;
    564  1.10     lukem 
    565  1.19     lukem 	if (argv == NULL || argc != 2 || argv[1] == NULL)
    566  1.19     lukem 		return (-1);
    567  1.10     lukem 
    568  1.19     lukem 	how = argv[1];
    569  1.39  christos 	if (strcmp(how, "on") == 0) {
    570  1.19     lukem 		el->el_flags &= ~EDIT_DISABLED;
    571  1.39  christos 		tty_rawmode(el);
    572  1.39  christos 	} else if (strcmp(how, "off") == 0) {
    573  1.39  christos 		tty_cookedmode(el);
    574  1.19     lukem 		el->el_flags |= EDIT_DISABLED;
    575  1.39  christos 	}
    576  1.19     lukem 	else {
    577  1.19     lukem 		(void) fprintf(el->el_errfile, "edit: Bad value `%s'.\n", how);
    578  1.19     lukem 		return (-1);
    579  1.19     lukem 	}
    580  1.19     lukem 	return (0);
    581  1.19     lukem }
    582