eln.c revision 1.25
1 /* $NetBSD: eln.c,v 1.25 2016/02/16 15:53:48 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 1.25 2016/02/16 15:53:48 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 public void 69 el_push(EditLine *el, const char *str) 70 { 71 /* Using multibyte->wide string decoding works fine under single-byte 72 * character sets too, and Does The Right Thing. */ 73 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv)); 74 } 75 76 77 public const char * 78 el_gets(EditLine *el, int *nread) 79 { 80 const wchar_t *tmp; 81 82 tmp = el_wgets(el, nread); 83 if (tmp != NULL) { 84 int i; 85 size_t nwread = 0; 86 87 for (i = 0; i < *nread; i++) 88 nwread += ct_enc_width(tmp[i]); 89 *nread = (int)nwread; 90 } 91 return ct_encode_string(tmp, &el->el_lgcyconv); 92 } 93 94 95 public int 96 el_parse(EditLine *el, int argc, const char *argv[]) 97 { 98 int ret; 99 const wchar_t **wargv; 100 101 wargv = (const wchar_t **) 102 ct_decode_argv(argc, argv, &el->el_lgcyconv); 103 if (!wargv) 104 return -1; 105 ret = el_wparse(el, argc, wargv); 106 ct_free_argv(wargv); 107 108 return ret; 109 } 110 111 112 public int 113 el_set(EditLine *el, int op, ...) 114 { 115 va_list ap; 116 int ret; 117 118 if (!el) 119 return -1; 120 va_start(ap, op); 121 122 switch (op) { 123 case EL_PROMPT: /* el_pfunc_t */ 124 case EL_RPROMPT: { 125 el_pfunc_t p = va_arg(ap, el_pfunc_t); 126 ret = prompt_set(el, p, 0, op, 0); 127 break; 128 } 129 130 case EL_RESIZE: { 131 el_zfunc_t p = va_arg(ap, el_zfunc_t); 132 void *arg = va_arg(ap, void *); 133 ret = ch_resizefun(el, p, arg); 134 break; 135 } 136 137 case EL_ALIAS_TEXT: { 138 el_afunc_t p = va_arg(ap, el_afunc_t); 139 void *arg = va_arg(ap, void *); 140 ret = ch_aliasfun(el, p, arg); 141 break; 142 } 143 144 case EL_PROMPT_ESC: 145 case EL_RPROMPT_ESC: { 146 el_pfunc_t p = va_arg(ap, el_pfunc_t); 147 int c = va_arg(ap, int); 148 149 ret = prompt_set(el, p, c, op, 0); 150 break; 151 } 152 153 case EL_TERMINAL: /* const char * */ 154 ret = el_wset(el, op, va_arg(ap, char *)); 155 break; 156 157 case EL_EDITOR: /* const wchar_t * */ 158 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 159 &el->el_lgcyconv)); 160 break; 161 162 case EL_SIGNAL: /* int */ 163 case EL_EDITMODE: 164 case EL_UNBUFFERED: 165 case EL_PREP_TERM: 166 ret = el_wset(el, op, va_arg(ap, int)); 167 break; 168 169 case EL_BIND: /* const char * list -> const wchar_t * list */ 170 case EL_TELLTC: 171 case EL_SETTC: 172 case EL_ECHOTC: 173 case EL_SETTY: { 174 const char *argv[20]; 175 int i; 176 const wchar_t **wargv; 177 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 178 if ((argv[i] = va_arg(ap, const char *)) == NULL) 179 break; 180 argv[0] = argv[i] = NULL; 181 wargv = (const wchar_t **) 182 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 183 if (!wargv) { 184 ret = -1; 185 goto out; 186 } 187 /* 188 * AFAIK we can't portably pass through our new wargv to 189 * el_wset(), so we have to reimplement the body of 190 * el_wset() for these ops. 191 */ 192 switch (op) { 193 case EL_BIND: 194 wargv[0] = STR("bind"); 195 ret = map_bind(el, i, wargv); 196 break; 197 case EL_TELLTC: 198 wargv[0] = STR("telltc"); 199 ret = terminal_telltc(el, i, wargv); 200 break; 201 case EL_SETTC: 202 wargv[0] = STR("settc"); 203 ret = terminal_settc(el, i, wargv); 204 break; 205 case EL_ECHOTC: 206 wargv[0] = STR("echotc"); 207 ret = terminal_echotc(el, i, wargv); 208 break; 209 case EL_SETTY: 210 wargv[0] = STR("setty"); 211 ret = tty_stty(el, i, wargv); 212 break; 213 default: 214 ret = -1; 215 } 216 ct_free_argv(wargv); 217 break; 218 } 219 220 /* XXX: do we need to change el_func_t too? */ 221 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 222 const char *args[2]; 223 el_func_t func; 224 wchar_t **wargv; 225 226 args[0] = va_arg(ap, const char *); 227 args[1] = va_arg(ap, const char *); 228 func = va_arg(ap, el_func_t); 229 230 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 231 if (!wargv) { 232 ret = -1; 233 goto out; 234 } 235 /* XXX: The two strdup's leak */ 236 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 237 func); 238 ct_free_argv(wargv); 239 break; 240 } 241 case EL_HIST: { /* hist_fun_t, const char * */ 242 hist_fun_t fun = va_arg(ap, hist_fun_t); 243 void *ptr = va_arg(ap, void *); 244 ret = hist_set(el, fun, ptr); 245 el->el_flags |= NARROW_HISTORY; 246 break; 247 } 248 249 /* XXX: do we need to change el_rfunc_t? */ 250 case EL_GETCFN: /* el_rfunc_t */ 251 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 252 el->el_flags |= NARROW_READ; 253 break; 254 255 case EL_CLIENTDATA: /* void * */ 256 ret = el_wset(el, op, va_arg(ap, void *)); 257 break; 258 259 case EL_SETFP: { /* int, FILE * */ 260 int what = va_arg(ap, int); 261 FILE *fp = va_arg(ap, FILE *); 262 ret = el_wset(el, op, what, fp); 263 break; 264 } 265 266 case EL_REFRESH: 267 re_clear_display(el); 268 re_refresh(el); 269 terminal__flush(el); 270 ret = 0; 271 break; 272 273 default: 274 ret = -1; 275 break; 276 } 277 278 out: 279 va_end(ap); 280 return ret; 281 } 282 283 284 public int 285 el_get(EditLine *el, int op, ...) 286 { 287 va_list ap; 288 int ret; 289 290 if (!el) 291 return -1; 292 293 va_start(ap, op); 294 295 switch (op) { 296 case EL_PROMPT: /* el_pfunc_t * */ 297 case EL_RPROMPT: { 298 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 299 ret = prompt_get(el, p, 0, op); 300 break; 301 } 302 303 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 304 case EL_RPROMPT_ESC: { 305 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 306 char *c = va_arg(ap, char *); 307 wchar_t wc = 0; 308 ret = prompt_get(el, p, &wc, op); 309 *c = (char)wc; 310 break; 311 } 312 313 case EL_EDITOR: { 314 const char **p = va_arg(ap, const char **); 315 const wchar_t *pw; 316 ret = el_wget(el, op, &pw); 317 *p = ct_encode_string(pw, &el->el_lgcyconv); 318 if (!el->el_lgcyconv.csize) 319 ret = -1; 320 break; 321 } 322 323 case EL_TERMINAL: /* const char ** */ 324 ret = el_wget(el, op, va_arg(ap, const char **)); 325 break; 326 327 case EL_SIGNAL: /* int * */ 328 case EL_EDITMODE: 329 case EL_UNBUFFERED: 330 case EL_PREP_TERM: 331 ret = el_wget(el, op, va_arg(ap, int *)); 332 break; 333 334 case EL_GETTC: { 335 char *argv[20]; 336 static char gettc[] = "gettc"; 337 int i; 338 for (i = 1; i < (int)__arraycount(argv); ++i) 339 if ((argv[i] = va_arg(ap, char *)) == NULL) 340 break; 341 argv[0] = gettc; 342 ret = terminal_gettc(el, i, argv); 343 break; 344 } 345 346 /* XXX: do we need to change el_rfunc_t? */ 347 case EL_GETCFN: /* el_rfunc_t */ 348 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 349 break; 350 351 case EL_CLIENTDATA: /* void ** */ 352 ret = el_wget(el, op, va_arg(ap, void **)); 353 break; 354 355 case EL_GETFP: { /* int, FILE ** */ 356 int what = va_arg(ap, int); 357 FILE **fpp = va_arg(ap, FILE **); 358 ret = el_wget(el, op, what, fpp); 359 break; 360 } 361 362 default: 363 ret = -1; 364 break; 365 } 366 367 va_end(ap); 368 return ret; 369 } 370 371 372 const LineInfo * 373 el_line(EditLine *el) 374 { 375 const LineInfoW *winfo = el_wline(el); 376 LineInfo *info = &el->el_lgcylinfo; 377 size_t offset; 378 const Char *p; 379 380 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 381 382 offset = 0; 383 for (p = winfo->buffer; p < winfo->cursor; p++) 384 offset += ct_enc_width(*p); 385 info->cursor = info->buffer + offset; 386 387 offset = 0; 388 for (p = winfo->buffer; p < winfo->lastchar; p++) 389 offset += ct_enc_width(*p); 390 info->lastchar = info->buffer + offset; 391 392 return info; 393 } 394 395 396 int 397 el_insertstr(EditLine *el, const char *str) 398 { 399 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 400 } 401
Indexes created Thu Sep 25 16:09:42 GMT 2025