1 /* $NetBSD: eln.c,v 1.36 2021/08/15 10:08:41 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 1.36 2021/08/15 10:08:41 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_SAFEREAD: 157 case EL_UNBUFFERED: 158 case EL_PREP_TERM: 159 ret = el_wset(el, op, va_arg(ap, int)); 160 break; 161 162 case EL_BIND: /* const char * list -> const wchar_t * list */ 163 case EL_TELLTC: 164 case EL_SETTC: 165 case EL_ECHOTC: 166 case EL_SETTY: { 167 const char *argv[20]; 168 int i; 169 const wchar_t **wargv; 170 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 171 if ((argv[i] = va_arg(ap, const char *)) == NULL) 172 break; 173 argv[0] = argv[i] = NULL; 174 wargv = (void *)ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 175 if (!wargv) { 176 ret = -1; 177 goto out; 178 } 179 /* 180 * AFAIK we can't portably pass through our new wargv to 181 * el_wset(), so we have to reimplement the body of 182 * el_wset() for these ops. 183 */ 184 switch (op) { 185 case EL_BIND: 186 wargv[0] = L"bind"; 187 ret = map_bind(el, i, wargv); 188 break; 189 case EL_TELLTC: 190 wargv[0] = L"telltc"; 191 ret = terminal_telltc(el, i, wargv); 192 break; 193 case EL_SETTC: 194 wargv[0] = L"settc"; 195 ret = terminal_settc(el, i, wargv); 196 break; 197 case EL_ECHOTC: 198 wargv[0] = L"echotc"; 199 ret = terminal_echotc(el, i, wargv); 200 break; 201 case EL_SETTY: 202 wargv[0] = L"setty"; 203 ret = tty_stty(el, i, wargv); 204 break; 205 default: 206 ret = -1; 207 } 208 el_free(wargv); 209 break; 210 } 211 212 /* XXX: do we need to change el_func_t too? */ 213 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 214 const char *args[2]; 215 el_func_t func; 216 wchar_t **wargv; 217 218 args[0] = va_arg(ap, const char *); 219 args[1] = va_arg(ap, const char *); 220 func = va_arg(ap, el_func_t); 221 222 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 223 if (!wargv) { 224 ret = -1; 225 goto out; 226 } 227 /* XXX: The two strdup's leak */ 228 ret = map_addfunc(el, wcsdup(wargv[0]), wcsdup(wargv[1]), 229 func); 230 el_free(wargv); 231 break; 232 } 233 case EL_HIST: { /* hist_fun_t, const char * */ 234 hist_fun_t fun = va_arg(ap, hist_fun_t); 235 void *ptr = va_arg(ap, void *); 236 ret = hist_set(el, fun, ptr); 237 el->el_flags |= NARROW_HISTORY; 238 break; 239 } 240 241 case EL_GETCFN: /* el_rfunc_t */ 242 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 243 break; 244 245 case EL_CLIENTDATA: /* void * */ 246 ret = el_wset(el, op, va_arg(ap, void *)); 247 break; 248 249 case EL_SETFP: { /* int, FILE * */ 250 int what = va_arg(ap, int); 251 FILE *fp = va_arg(ap, FILE *); 252 ret = el_wset(el, op, what, fp); 253 break; 254 } 255 256 case EL_REFRESH: 257 re_clear_display(el); 258 re_refresh(el); 259 terminal__flush(el); 260 ret = 0; 261 break; 262 263 default: 264 ret = -1; 265 break; 266 } 267 268 out: 269 va_end(ap); 270 return ret; 271 } 272 273 274 int 275 el_get(EditLine *el, int op, ...) 276 { 277 va_list ap; 278 int ret; 279 280 if (!el) 281 return -1; 282 283 va_start(ap, op); 284 285 switch (op) { 286 case EL_PROMPT: /* el_pfunc_t * */ 287 case EL_RPROMPT: { 288 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 289 ret = prompt_get(el, p, 0, op); 290 break; 291 } 292 293 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 294 case EL_RPROMPT_ESC: { 295 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 296 char *c = va_arg(ap, char *); 297 wchar_t wc = 0; 298 ret = prompt_get(el, p, &wc, op); 299 *c = (char)wc; 300 break; 301 } 302 303 case EL_EDITOR: { 304 const char **p = va_arg(ap, const char **); 305 const wchar_t *pw; 306 ret = el_wget(el, op, &pw); 307 *p = ct_encode_string(pw, &el->el_lgcyconv); 308 if (!el->el_lgcyconv.csize) 309 ret = -1; 310 break; 311 } 312 313 case EL_TERMINAL: /* const char ** */ 314 ret = el_wget(el, op, va_arg(ap, const char **)); 315 break; 316 317 case EL_SIGNAL: /* int * */ 318 case EL_EDITMODE: 319 case EL_SAFEREAD: 320 case EL_UNBUFFERED: 321 case EL_PREP_TERM: 322 ret = el_wget(el, op, va_arg(ap, int *)); 323 break; 324 325 case EL_GETTC: { 326 char *argv[3]; 327 static char gettc[] = "gettc"; 328 argv[0] = gettc; 329 argv[1] = va_arg(ap, char *); 330 argv[2] = va_arg(ap, void *); 331 ret = terminal_gettc(el, 3, argv); 332 break; 333 } 334 335 case EL_GETCFN: /* el_rfunc_t */ 336 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 337 break; 338 339 case EL_CLIENTDATA: /* void ** */ 340 ret = el_wget(el, op, va_arg(ap, void **)); 341 break; 342 343 case EL_GETFP: { /* int, FILE ** */ 344 int what = va_arg(ap, int); 345 FILE **fpp = va_arg(ap, FILE **); 346 ret = el_wget(el, op, what, fpp); 347 break; 348 } 349 350 default: 351 ret = -1; 352 break; 353 } 354 355 va_end(ap); 356 return ret; 357 } 358 359 360 const LineInfo * 361 el_line(EditLine *el) 362 { 363 const LineInfoW *winfo = el_wline(el); 364 LineInfo *info = &el->el_lgcylinfo; 365 size_t offset; 366 const wchar_t *p; 367 368 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 369 370 offset = 0; 371 for (p = winfo->buffer; p < winfo->cursor; p++) 372 offset += ct_enc_width(*p); 373 info->cursor = info->buffer + offset; 374 375 offset = 0; 376 for (p = winfo->buffer; p < winfo->lastchar; p++) 377 offset += ct_enc_width(*p); 378 info->lastchar = info->buffer + offset; 379 380 return info; 381 } 382 383 384 int 385 el_insertstr(EditLine *el, const char *str) 386 { 387 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 388 } 389