eln.c revision 1.35
1 /* $NetBSD: eln.c,v 1.35 2019/04/26 16:56:57 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 18 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 #include "config.h" 29 #if !defined(lint) && !defined(SCCSID) 30 __RCSID("$NetBSD: eln.c,v 1.35 2019/04/26 16:56:57 christos Exp $"); 31 #endif /* not lint && not SCCSID */ 32 33 #include <errno.h> 34 #include <stdarg.h> 35 #include <stdio.h> 36 #include <stdlib.h> 37 38 #include "el.h" 39 40 int 41 el_getc(EditLine *el, char *cp) 42 { 43 int num_read; 44 wchar_t wc = 0; 45 46 num_read = el_wgetc(el, &wc); 47 *cp = '\0'; 48 if (num_read <= 0) 49 return num_read; 50 num_read = wctob(wc); 51 if (num_read == EOF) { 52 errno = ERANGE; 53 return -1; 54 } else { 55 *cp = (char)num_read; 56 return 1; 57 } 58 } 59 60 61 void 62 el_push(EditLine *el, const char *str) 63 { 64 /* Using multibyte->wide string decoding works fine under single-byte 65 * character sets too, and Does The Right Thing. */ 66 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv)); 67 } 68 69 70 const char * 71 el_gets(EditLine *el, int *nread) 72 { 73 const wchar_t *tmp; 74 75 tmp = el_wgets(el, nread); 76 if (tmp != NULL) { 77 int i; 78 size_t nwread = 0; 79 80 for (i = 0; i < *nread; i++) 81 nwread += ct_enc_width(tmp[i]); 82 *nread = (int)nwread; 83 } 84 return ct_encode_string(tmp, &el->el_lgcyconv); 85 } 86 87 88 int 89 el_parse(EditLine *el, int argc, const char *argv[]) 90 { 91 int ret; 92 const wchar_t **wargv; 93 94 wargv = (void *)ct_decode_argv(argc, argv, &el->el_lgcyconv); 95 if (!wargv) 96 return -1; 97 ret = el_wparse(el, argc, wargv); 98 el_free(wargv); 99 100 return ret; 101 } 102 103 104 int 105 el_set(EditLine *el, int op, ...) 106 { 107 va_list ap; 108 int ret; 109 110 if (!el) 111 return -1; 112 va_start(ap, op); 113 114 switch (op) { 115 case EL_PROMPT: /* el_pfunc_t */ 116 case EL_RPROMPT: { 117 el_pfunc_t p = va_arg(ap, el_pfunc_t); 118 ret = prompt_set(el, p, 0, op, 0); 119 break; 120 } 121 122 case EL_RESIZE: { 123 el_zfunc_t p = va_arg(ap, el_zfunc_t); 124 void *arg = va_arg(ap, void *); 125 ret = ch_resizefun(el, p, arg); 126 break; 127 } 128 129 case EL_ALIAS_TEXT: { 130 el_afunc_t p = va_arg(ap, el_afunc_t); 131 void *arg = va_arg(ap, void *); 132 ret = ch_aliasfun(el, p, arg); 133 break; 134 } 135 136 case EL_PROMPT_ESC: 137 case EL_RPROMPT_ESC: { 138 el_pfunc_t p = va_arg(ap, el_pfunc_t); 139 int c = va_arg(ap, int); 140 141 ret = prompt_set(el, p, c, op, 0); 142 break; 143 } 144 145 case EL_TERMINAL: /* const char * */ 146 ret = el_wset(el, op, va_arg(ap, char *)); 147 break; 148 149 case EL_EDITOR: /* const wchar_t * */ 150 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 151 &el->el_lgcyconv)); 152 break; 153 154 case EL_SIGNAL: /* int */ 155 case EL_EDITMODE: 156 case EL_UNBUFFERED: 157 case EL_PREP_TERM: 158 ret = el_wset(el, op, va_arg(ap, int)); 159 break; 160 161 case EL_BIND: /* const char * list -> const wchar_t * list */ 162 case EL_TELLTC: 163 case EL_SETTC: 164 case EL_ECHOTC: 165 case EL_SETTY: { 166 const char *argv[20]; 167 int i; 168 const wchar_t **wargv; 169 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 170 if ((argv[i] = va_arg(ap, const char *)) == NULL) 171 break; 172 argv[0] = argv[i] = NULL; 173 wargv = (void *)ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 174 if (!wargv) { 175 ret = -1; 176 goto out; 177 } 178 /* 179 * AFAIK we can't portably pass through our new wargv to 180 * el_wset(), so we have to reimplement the body of 181 * el_wset() for these ops. 182 */ 183 switch (op) { 184 case EL_BIND: 185 wargv[0] = L"bind"; 186 ret = map_bind(el, i, wargv); 187 break; 188 case EL_TELLTC: 189 wargv[0] = L"telltc"; 190 ret = terminal_telltc(el, i, wargv); 191 break; 192 case EL_SETTC: 193 wargv[0] = L"settc"; 194 ret = terminal_settc(el, i, wargv); 195 break; 196 case EL_ECHOTC: 197 wargv[0] = L"echotc"; 198 ret = terminal_echotc(el, i, wargv); 199 break; 200 case EL_SETTY: 201 wargv[0] = L"setty"; 202 ret = tty_stty(el, i, wargv); 203 break; 204 default: 205 ret = -1; 206 } 207 el_free(wargv); 208 break; 209 } 210 211 /* XXX: do we need to change el_func_t too? */ 212 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 213 const char *args[2]; 214 el_func_t func; 215 wchar_t **wargv; 216 217 args[0] = va_arg(ap, const char *); 218 args[1] = va_arg(ap, const char *); 219 func = va_arg(ap, el_func_t); 220 221 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 222 if (!wargv) { 223 ret = -1; 224 goto out; 225 } 226 /* XXX: The two strdup's leak */ 227 ret = map_addfunc(el, wcsdup(wargv[0]), wcsdup(wargv[1]), 228 func); 229 el_free(wargv); 230 break; 231 } 232 case EL_HIST: { /* hist_fun_t, const char * */ 233 hist_fun_t fun = va_arg(ap, hist_fun_t); 234 void *ptr = va_arg(ap, void *); 235 ret = hist_set(el, fun, ptr); 236 el->el_flags |= NARROW_HISTORY; 237 break; 238 } 239 240 case EL_GETCFN: /* el_rfunc_t */ 241 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 242 break; 243 244 case EL_CLIENTDATA: /* void * */ 245 ret = el_wset(el, op, va_arg(ap, void *)); 246 break; 247 248 case EL_SETFP: { /* int, FILE * */ 249 int what = va_arg(ap, int); 250 FILE *fp = va_arg(ap, FILE *); 251 ret = el_wset(el, op, what, fp); 252 break; 253 } 254 255 case EL_REFRESH: 256 re_clear_display(el); 257 re_refresh(el); 258 terminal__flush(el); 259 ret = 0; 260 break; 261 262 default: 263 ret = -1; 264 break; 265 } 266 267 out: 268 va_end(ap); 269 return ret; 270 } 271 272 273 int 274 el_get(EditLine *el, int op, ...) 275 { 276 va_list ap; 277 int ret; 278 279 if (!el) 280 return -1; 281 282 va_start(ap, op); 283 284 switch (op) { 285 case EL_PROMPT: /* el_pfunc_t * */ 286 case EL_RPROMPT: { 287 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 288 ret = prompt_get(el, p, 0, op); 289 break; 290 } 291 292 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 293 case EL_RPROMPT_ESC: { 294 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 295 char *c = va_arg(ap, char *); 296 wchar_t wc = 0; 297 ret = prompt_get(el, p, &wc, op); 298 *c = (char)wc; 299 break; 300 } 301 302 case EL_EDITOR: { 303 const char **p = va_arg(ap, const char **); 304 const wchar_t *pw; 305 ret = el_wget(el, op, &pw); 306 *p = ct_encode_string(pw, &el->el_lgcyconv); 307 if (!el->el_lgcyconv.csize) 308 ret = -1; 309 break; 310 } 311 312 case EL_TERMINAL: /* const char ** */ 313 ret = el_wget(el, op, va_arg(ap, const char **)); 314 break; 315 316 case EL_SIGNAL: /* int * */ 317 case EL_EDITMODE: 318 case EL_UNBUFFERED: 319 case EL_PREP_TERM: 320 ret = el_wget(el, op, va_arg(ap, int *)); 321 break; 322 323 case EL_GETTC: { 324 char *argv[3]; 325 static char gettc[] = "gettc"; 326 argv[0] = gettc; 327 argv[1] = va_arg(ap, char *); 328 argv[2] = va_arg(ap, void *); 329 ret = terminal_gettc(el, 3, argv); 330 break; 331 } 332 333 case EL_GETCFN: /* el_rfunc_t */ 334 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 335 break; 336 337 case EL_CLIENTDATA: /* void ** */ 338 ret = el_wget(el, op, va_arg(ap, void **)); 339 break; 340 341 case EL_GETFP: { /* int, FILE ** */ 342 int what = va_arg(ap, int); 343 FILE **fpp = va_arg(ap, FILE **); 344 ret = el_wget(el, op, what, fpp); 345 break; 346 } 347 348 default: 349 ret = -1; 350 break; 351 } 352 353 va_end(ap); 354 return ret; 355 } 356 357 358 const LineInfo * 359 el_line(EditLine *el) 360 { 361 const LineInfoW *winfo = el_wline(el); 362 LineInfo *info = &el->el_lgcylinfo; 363 size_t offset; 364 const wchar_t *p; 365 366 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 367 368 offset = 0; 369 for (p = winfo->buffer; p < winfo->cursor; p++) 370 offset += ct_enc_width(*p); 371 info->cursor = info->buffer + offset; 372 373 offset = 0; 374 for (p = winfo->buffer; p < winfo->lastchar; p++) 375 offset += ct_enc_width(*p); 376 info->lastchar = info->buffer + offset; 377 378 return info; 379 } 380 381 382 int 383 el_insertstr(EditLine *el, const char *str) 384 { 385 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 386 } 387
Indexes created Tue Sep 23 22:09:46 GMT 2025