1 /* $NetBSD: eln.c,v 1.14 2012/03/11 21:15:25 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by the NetBSD
18 * Foundation, Inc. and its contributors.
19 * 4. Neither the name of The NetBSD Foundation nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
33 * POSSIBILITY OF SUCH DAMAGE.
34 */
35 #include "config.h"
36 #if !defined(lint) && !defined(SCCSID)
37 __RCSID("$NetBSD: eln.c,v 1.14 2012/03/11 21:15:25 christos Exp $");
38 #endif /* not lint && not SCCSID */
39
40 #include "histedit.h"
41 #include "el.h"
42 #include "read.h"
43 #include <stdarg.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46
47 public int
el_getc(EditLine * el,char * cp)48 el_getc(EditLine *el, char *cp)
49 {
50 int num_read;
51 wchar_t wc = 0;
52
53 if (!(el->el_flags & CHARSET_IS_UTF8))
54 el->el_flags |= IGNORE_EXTCHARS;
55 num_read = el_wgetc (el, &wc);
56 if (!(el->el_flags & CHARSET_IS_UTF8))
57 el->el_flags &= ~IGNORE_EXTCHARS;
58
59 if (num_read > 0)
60 *cp = (char)wc;
61 return num_read;
62 }
63
64
65 public void
el_push(EditLine * el,const char * str)66 el_push(EditLine *el, const char *str)
67 {
68 /* Using multibyte->wide string decoding works fine under single-byte
69 * character sets too, and Does The Right Thing. */
70 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv));
71 }
72
73
74 public const char *
el_gets(EditLine * el,int * nread)75 el_gets(EditLine *el, int *nread)
76 {
77 const wchar_t *tmp;
78
79 el->el_flags |= IGNORE_EXTCHARS;
80 tmp = el_wgets(el, nread);
81 el->el_flags &= ~IGNORE_EXTCHARS;
82 return ct_encode_string(tmp, &el->el_lgcyconv);
83 }
84
85
86 public int
el_parse(EditLine * el,int argc,const char * argv[])87 el_parse(EditLine *el, int argc, const char *argv[])
88 {
89 int ret;
90 const wchar_t **wargv;
91
92 wargv = (const wchar_t **)
93 ct_decode_argv(argc, argv, &el->el_lgcyconv);
94 if (!wargv)
95 return -1;
96 ret = el_wparse(el, argc, wargv);
97 ct_free_argv(wargv);
98
99 return ret;
100 }
101
102
103 public int
el_set(EditLine * el,int op,...)104 el_set(EditLine *el, int op, ...)
105 {
106 va_list ap;
107 int ret;
108
109 if (!el)
110 return -1;
111 va_start(ap, op);
112
113 switch (op) {
114 case EL_PROMPT: /* el_pfunc_t */
115 case EL_RPROMPT: {
116 el_pfunc_t p = va_arg(ap, el_pfunc_t);
117 ret = prompt_set(el, p, 0, op, 0);
118 break;
119 }
120
121 case EL_RESIZE: {
122 el_zfunc_t p = va_arg(ap, el_zfunc_t);
123 void *arg = va_arg(ap, void *);
124 ret = ch_resizefun(el, p, arg);
125 break;
126 }
127
128 case EL_TERMINAL: /* const char * */
129 ret = el_wset(el, op, va_arg(ap, char *));
130 break;
131
132 case EL_EDITOR: /* const wchar_t * */
133 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *),
134 &el->el_lgcyconv));
135 break;
136
137 case EL_SIGNAL: /* int */
138 case EL_EDITMODE:
139 case EL_UNBUFFERED:
140 case EL_PREP_TERM:
141 ret = el_wset(el, op, va_arg(ap, int));
142 break;
143
144 case EL_BIND: /* const char * list -> const wchar_t * list */
145 case EL_TELLTC:
146 case EL_SETTC:
147 case EL_ECHOTC:
148 case EL_SETTY: {
149 const char *argv[20];
150 int i;
151 const wchar_t **wargv;
152 for (i = 1; i < (int)__arraycount(argv); ++i)
153 if ((argv[i] = va_arg(ap, char *)) == NULL)
154 break;
155 argv[0] = NULL;
156 wargv = (const wchar_t **)
157 ct_decode_argv(i + 1, argv, &el->el_lgcyconv);
158 if (!wargv) {
159 ret = -1;
160 goto out;
161 }
162 /*
163 * AFAIK we can't portably pass through our new wargv to
164 * el_wset(), so we have to reimplement the body of
165 * el_wset() for these ops.
166 */
167 switch (op) {
168 case EL_BIND:
169 wargv[0] = STR("bind");
170 ret = map_bind(el, i, wargv);
171 break;
172 case EL_TELLTC:
173 wargv[0] = STR("telltc");
174 ret = terminal_telltc(el, i, wargv);
175 break;
176 case EL_SETTC:
177 wargv[0] = STR("settc");
178 ret = terminal_settc(el, i, wargv);
179 break;
180 case EL_ECHOTC:
181 wargv[0] = STR("echotc");
182 ret = terminal_echotc(el, i, wargv);
183 break;
184 case EL_SETTY:
185 wargv[0] = STR("setty");
186 ret = tty_stty(el, i, wargv);
187 break;
188 default:
189 ret = -1;
190 }
191 ct_free_argv(wargv);
192 break;
193 }
194
195 /* XXX: do we need to change el_func_t too? */
196 case EL_ADDFN: { /* const char *, const char *, el_func_t */
197 const char *args[2];
198 el_func_t func;
199 wchar_t **wargv;
200
201 args[0] = va_arg(ap, const char *);
202 args[1] = va_arg(ap, const char *);
203 func = va_arg(ap, el_func_t);
204
205 wargv = ct_decode_argv(2, args, &el->el_lgcyconv);
206 if (!wargv) {
207 ret = -1;
208 goto out;
209 }
210 // XXX: The two strdup's leak
211 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]),
212 func);
213 ct_free_argv(wargv);
214 break;
215 }
216 case EL_HIST: { /* hist_fun_t, const char * */
217 hist_fun_t fun = va_arg(ap, hist_fun_t);
218 void *ptr = va_arg(ap, void *);
219 ret = hist_set(el, fun, ptr);
220 el->el_flags |= NARROW_HISTORY;
221 break;
222 }
223 /* XXX: do we need to change el_rfunc_t? */
224 case EL_GETCFN: /* el_rfunc_t */
225 ret = el_wset(el, op, va_arg(ap, el_rfunc_t));
226 el->el_flags |= NARROW_READ;
227 break;
228 case EL_CLIENTDATA: /* void * */
229 ret = el_wset(el, op, va_arg(ap, void *));
230 break;
231 case EL_SETFP: { /* int, FILE * */
232 int what = va_arg(ap, int);
233 FILE *fp = va_arg(ap, FILE *);
234 ret = el_wset(el, op, what, fp);
235 break;
236 }
237 case EL_PROMPT_ESC: /* el_pfunc_t, char */
238 case EL_RPROMPT_ESC: {
239 el_pfunc_t p = va_arg(ap, el_pfunc_t);
240 char c = (char)va_arg(ap, int);
241 ret = prompt_set(el, p, c, op, 0);
242 break;
243 }
244 default:
245 ret = -1;
246 break;
247 }
248
249 out:
250 va_end(ap);
251 return ret;
252 }
253
254
255 public int
el_get(EditLine * el,int op,...)256 el_get(EditLine *el, int op, ...)
257 {
258 va_list ap;
259 int ret;
260
261 if (!el)
262 return -1;
263
264 va_start(ap, op);
265
266 switch (op) {
267 case EL_PROMPT: /* el_pfunc_t * */
268 case EL_RPROMPT: {
269 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
270 ret = prompt_get(el, p, 0, op);
271 break;
272 }
273
274 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/
275 case EL_RPROMPT_ESC: {
276 el_pfunc_t *p = va_arg(ap, el_pfunc_t *);
277 char *c = va_arg(ap, char *);
278 wchar_t wc = 0;
279 ret = prompt_get(el, p, &wc, op);
280 *c = (char)wc;
281 break;
282 }
283
284 case EL_EDITOR: {
285 const char **p = va_arg(ap, const char **);
286 const wchar_t *pw;
287 ret = el_wget(el, op, &pw);
288 *p = ct_encode_string(pw, &el->el_lgcyconv);
289 if (!el->el_lgcyconv.csize)
290 ret = -1;
291 break;
292 }
293
294 case EL_TERMINAL: /* const char ** */
295 ret = el_wget(el, op, va_arg(ap, const char **));
296 break;
297
298 case EL_SIGNAL: /* int * */
299 case EL_EDITMODE:
300 case EL_UNBUFFERED:
301 case EL_PREP_TERM:
302 ret = el_wget(el, op, va_arg(ap, int *));
303 break;
304
305 case EL_GETTC: {
306 char *argv[20];
307 static char gettc[] = "gettc";
308 int i;
309 for (i = 1; i < (int)__arraycount(argv); ++i)
310 if ((argv[i] = va_arg(ap, char *)) == NULL)
311 break;
312 argv[0] = gettc;
313 ret = terminal_gettc(el, i, argv);
314 break;
315 }
316
317 /* XXX: do we need to change el_rfunc_t? */
318 case EL_GETCFN: /* el_rfunc_t */
319 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *));
320 break;
321
322 case EL_CLIENTDATA: /* void ** */
323 ret = el_wget(el, op, va_arg(ap, void **));
324 break;
325
326 case EL_GETFP: { /* int, FILE ** */
327 int what = va_arg(ap, int);
328 FILE **fpp = va_arg(ap, FILE **);
329 ret = el_wget(el, op, what, fpp);
330 break;
331 }
332
333 default:
334 ret = -1;
335 break;
336 }
337
338 va_end(ap);
339 return ret;
340 }
341
342
343 const LineInfo *
el_line(EditLine * el)344 el_line(EditLine *el)
345 {
346 const LineInfoW *winfo = el_wline(el);
347 LineInfo *info = &el->el_lgcylinfo;
348 size_t offset;
349 const Char *p;
350
351 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv);
352
353 offset = 0;
354 for (p = winfo->buffer; p < winfo->cursor; p++)
355 offset += ct_enc_width(*p);
356 info->cursor = info->buffer + offset;
357
358 offset = 0;
359 for (p = winfo->buffer; p < winfo->lastchar; p++)
360 offset += ct_enc_width(*p);
361 info->lastchar = info->buffer + offset;
362
363 return info;
364 }
365
366
367 int
el_insertstr(EditLine * el,const char * str)368 el_insertstr(EditLine *el, const char *str)
369 {
370 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv));
371 }
372