eln.c revision 1.27
1 /* $NetBSD: eln.c,v 1.27 2016/02/24 17:13:22 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 1.27 2016/02/24 17:13:22 christos Exp $"); 38 #endif /* not lint && not SCCSID */ 39 40 #include <errno.h> 41 #include <stdarg.h> 42 #include <stdio.h> 43 #include <stdlib.h> 44 45 #include "el.h" 46 47 public int 48 el_getc(EditLine *el, char *cp) 49 { 50 int num_read; 51 wchar_t wc = 0; 52 53 num_read = el_wgetc(el, &wc); 54 *cp = '\0'; 55 if (num_read <= 0) 56 return num_read; 57 num_read = ct_wctob(wc); 58 if (num_read == EOF) { 59 errno = ERANGE; 60 return -1; 61 } else { 62 *cp = (char)num_read; 63 return 1; 64 } 65 } 66 67 68 #ifdef WIDECHAR 69 public void 70 el_push(EditLine *el, const char *str) 71 { 72 /* Using multibyte->wide string decoding works fine under single-byte 73 * character sets too, and Does The Right Thing. */ 74 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv)); 75 } 76 77 78 public const char * 79 el_gets(EditLine *el, int *nread) 80 { 81 const wchar_t *tmp; 82 83 tmp = el_wgets(el, nread); 84 if (tmp != NULL) { 85 int i; 86 size_t nwread = 0; 87 88 for (i = 0; i < *nread; i++) 89 nwread += ct_enc_width(tmp[i]); 90 *nread = (int)nwread; 91 } 92 return ct_encode_string(tmp, &el->el_lgcyconv); 93 } 94 95 96 public int 97 el_parse(EditLine *el, int argc, const char *argv[]) 98 { 99 int ret; 100 const wchar_t **wargv; 101 102 wargv = (const wchar_t **) 103 ct_decode_argv(argc, argv, &el->el_lgcyconv); 104 if (!wargv) 105 return -1; 106 ret = el_wparse(el, argc, wargv); 107 ct_free_argv(wargv); 108 109 return ret; 110 } 111 112 113 public int 114 el_set(EditLine *el, int op, ...) 115 { 116 va_list ap; 117 int ret; 118 119 if (!el) 120 return -1; 121 va_start(ap, op); 122 123 switch (op) { 124 case EL_PROMPT: /* el_pfunc_t */ 125 case EL_RPROMPT: { 126 el_pfunc_t p = va_arg(ap, el_pfunc_t); 127 ret = prompt_set(el, p, 0, op, 0); 128 break; 129 } 130 131 case EL_RESIZE: { 132 el_zfunc_t p = va_arg(ap, el_zfunc_t); 133 void *arg = va_arg(ap, void *); 134 ret = ch_resizefun(el, p, arg); 135 break; 136 } 137 138 case EL_ALIAS_TEXT: { 139 el_afunc_t p = va_arg(ap, el_afunc_t); 140 void *arg = va_arg(ap, void *); 141 ret = ch_aliasfun(el, p, arg); 142 break; 143 } 144 145 case EL_PROMPT_ESC: 146 case EL_RPROMPT_ESC: { 147 el_pfunc_t p = va_arg(ap, el_pfunc_t); 148 int c = va_arg(ap, int); 149 150 ret = prompt_set(el, p, c, op, 0); 151 break; 152 } 153 154 case EL_TERMINAL: /* const char * */ 155 ret = el_wset(el, op, va_arg(ap, char *)); 156 break; 157 158 case EL_EDITOR: /* const wchar_t * */ 159 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 160 &el->el_lgcyconv)); 161 break; 162 163 case EL_SIGNAL: /* int */ 164 case EL_EDITMODE: 165 case EL_UNBUFFERED: 166 case EL_PREP_TERM: 167 ret = el_wset(el, op, va_arg(ap, int)); 168 break; 169 170 case EL_BIND: /* const char * list -> const wchar_t * list */ 171 case EL_TELLTC: 172 case EL_SETTC: 173 case EL_ECHOTC: 174 case EL_SETTY: { 175 const char *argv[20]; 176 int i; 177 const wchar_t **wargv; 178 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 179 if ((argv[i] = va_arg(ap, const char *)) == NULL) 180 break; 181 argv[0] = argv[i] = NULL; 182 wargv = (const wchar_t **) 183 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 184 if (!wargv) { 185 ret = -1; 186 goto out; 187 } 188 /* 189 * AFAIK we can't portably pass through our new wargv to 190 * el_wset(), so we have to reimplement the body of 191 * el_wset() for these ops. 192 */ 193 switch (op) { 194 case EL_BIND: 195 wargv[0] = STR("bind"); 196 ret = map_bind(el, i, wargv); 197 break; 198 case EL_TELLTC: 199 wargv[0] = STR("telltc"); 200 ret = terminal_telltc(el, i, wargv); 201 break; 202 case EL_SETTC: 203 wargv[0] = STR("settc"); 204 ret = terminal_settc(el, i, wargv); 205 break; 206 case EL_ECHOTC: 207 wargv[0] = STR("echotc"); 208 ret = terminal_echotc(el, i, wargv); 209 break; 210 case EL_SETTY: 211 wargv[0] = STR("setty"); 212 ret = tty_stty(el, i, wargv); 213 break; 214 default: 215 ret = -1; 216 } 217 ct_free_argv(wargv); 218 break; 219 } 220 221 /* XXX: do we need to change el_func_t too? */ 222 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 223 const char *args[2]; 224 el_func_t func; 225 wchar_t **wargv; 226 227 args[0] = va_arg(ap, const char *); 228 args[1] = va_arg(ap, const char *); 229 func = va_arg(ap, el_func_t); 230 231 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 232 if (!wargv) { 233 ret = -1; 234 goto out; 235 } 236 /* XXX: The two strdup's leak */ 237 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 238 func); 239 ct_free_argv(wargv); 240 break; 241 } 242 case EL_HIST: { /* hist_fun_t, const char * */ 243 hist_fun_t fun = va_arg(ap, hist_fun_t); 244 void *ptr = va_arg(ap, void *); 245 ret = hist_set(el, fun, ptr); 246 el->el_flags |= NARROW_HISTORY; 247 break; 248 } 249 250 case EL_GETCFN: /* el_rfunc_t */ 251 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 252 break; 253 254 case EL_CLIENTDATA: /* void * */ 255 ret = el_wset(el, op, va_arg(ap, void *)); 256 break; 257 258 case EL_SETFP: { /* int, FILE * */ 259 int what = va_arg(ap, int); 260 FILE *fp = va_arg(ap, FILE *); 261 ret = el_wset(el, op, what, fp); 262 break; 263 } 264 265 case EL_REFRESH: 266 re_clear_display(el); 267 re_refresh(el); 268 terminal__flush(el); 269 ret = 0; 270 break; 271 272 default: 273 ret = -1; 274 break; 275 } 276 277 out: 278 va_end(ap); 279 return ret; 280 } 281 282 283 public int 284 el_get(EditLine *el, int op, ...) 285 { 286 va_list ap; 287 int ret; 288 289 if (!el) 290 return -1; 291 292 va_start(ap, op); 293 294 switch (op) { 295 case EL_PROMPT: /* el_pfunc_t * */ 296 case EL_RPROMPT: { 297 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 298 ret = prompt_get(el, p, 0, op); 299 break; 300 } 301 302 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 303 case EL_RPROMPT_ESC: { 304 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 305 char *c = va_arg(ap, char *); 306 wchar_t wc = 0; 307 ret = prompt_get(el, p, &wc, op); 308 *c = (char)wc; 309 break; 310 } 311 312 case EL_EDITOR: { 313 const char **p = va_arg(ap, const char **); 314 const wchar_t *pw; 315 ret = el_wget(el, op, &pw); 316 *p = ct_encode_string(pw, &el->el_lgcyconv); 317 if (!el->el_lgcyconv.csize) 318 ret = -1; 319 break; 320 } 321 322 case EL_TERMINAL: /* const char ** */ 323 ret = el_wget(el, op, va_arg(ap, const char **)); 324 break; 325 326 case EL_SIGNAL: /* int * */ 327 case EL_EDITMODE: 328 case EL_UNBUFFERED: 329 case EL_PREP_TERM: 330 ret = el_wget(el, op, va_arg(ap, int *)); 331 break; 332 333 case EL_GETTC: { 334 char *argv[20]; 335 static char gettc[] = "gettc"; 336 int i; 337 for (i = 1; i < (int)__arraycount(argv); ++i) 338 if ((argv[i] = va_arg(ap, char *)) == NULL) 339 break; 340 argv[0] = gettc; 341 ret = terminal_gettc(el, i, argv); 342 break; 343 } 344 345 case EL_GETCFN: /* el_rfunc_t */ 346 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 347 break; 348 349 case EL_CLIENTDATA: /* void ** */ 350 ret = el_wget(el, op, va_arg(ap, void **)); 351 break; 352 353 case EL_GETFP: { /* int, FILE ** */ 354 int what = va_arg(ap, int); 355 FILE **fpp = va_arg(ap, FILE **); 356 ret = el_wget(el, op, what, fpp); 357 break; 358 } 359 360 default: 361 ret = -1; 362 break; 363 } 364 365 va_end(ap); 366 return ret; 367 } 368 369 370 const LineInfo * 371 el_line(EditLine *el) 372 { 373 const LineInfoW *winfo = el_wline(el); 374 LineInfo *info = &el->el_lgcylinfo; 375 size_t offset; 376 const Char *p; 377 378 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 379 380 offset = 0; 381 for (p = winfo->buffer; p < winfo->cursor; p++) 382 offset += ct_enc_width(*p); 383 info->cursor = info->buffer + offset; 384 385 offset = 0; 386 for (p = winfo->buffer; p < winfo->lastchar; p++) 387 offset += ct_enc_width(*p); 388 info->lastchar = info->buffer + offset; 389 390 return info; 391 } 392 393 394 int 395 el_insertstr(EditLine *el, const char *str) 396 { 397 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 398 } 399 #endif /* WIDECHAR */ 400
Indexes created Thu Oct 02 10:09:58 GMT 2025