eln.c revision 1.32
1 /* $NetBSD: eln.c,v 1.32 2016/04/11 00:50:13 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 1.32 2016/04/11 00:50:13 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 public 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 public 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 public 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 public int 89 el_parse(EditLine *el, int argc, const char *argv[]) 90 { 91 int ret; 92 const wchar_t **wargv; 93 94 wargv = (const wchar_t **) 95 ct_decode_argv(argc, argv, &el->el_lgcyconv); 96 if (!wargv) 97 return -1; 98 ret = el_wparse(el, argc, wargv); 99 el_free(wargv); 100 101 return ret; 102 } 103 104 105 public int 106 el_set(EditLine *el, int op, ...) 107 { 108 va_list ap; 109 int ret; 110 111 if (!el) 112 return -1; 113 va_start(ap, op); 114 115 switch (op) { 116 case EL_PROMPT: /* el_pfunc_t */ 117 case EL_RPROMPT: { 118 el_pfunc_t p = va_arg(ap, el_pfunc_t); 119 ret = prompt_set(el, p, 0, op, 0); 120 break; 121 } 122 123 case EL_RESIZE: { 124 el_zfunc_t p = va_arg(ap, el_zfunc_t); 125 void *arg = va_arg(ap, void *); 126 ret = ch_resizefun(el, p, arg); 127 break; 128 } 129 130 case EL_ALIAS_TEXT: { 131 el_afunc_t p = va_arg(ap, el_afunc_t); 132 void *arg = va_arg(ap, void *); 133 ret = ch_aliasfun(el, p, arg); 134 break; 135 } 136 137 case EL_PROMPT_ESC: 138 case EL_RPROMPT_ESC: { 139 el_pfunc_t p = va_arg(ap, el_pfunc_t); 140 int c = va_arg(ap, int); 141 142 ret = prompt_set(el, p, c, op, 0); 143 break; 144 } 145 146 case EL_TERMINAL: /* const char * */ 147 ret = el_wset(el, op, va_arg(ap, char *)); 148 break; 149 150 case EL_EDITOR: /* const wchar_t * */ 151 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 152 &el->el_lgcyconv)); 153 break; 154 155 case EL_SIGNAL: /* int */ 156 case EL_EDITMODE: 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 = (const wchar_t **) 175 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 176 if (!wargv) { 177 ret = -1; 178 goto out; 179 } 180 /* 181 * AFAIK we can't portably pass through our new wargv to 182 * el_wset(), so we have to reimplement the body of 183 * el_wset() for these ops. 184 */ 185 switch (op) { 186 case EL_BIND: 187 wargv[0] = L"bind"; 188 ret = map_bind(el, i, wargv); 189 break; 190 case EL_TELLTC: 191 wargv[0] = L"telltc"; 192 ret = terminal_telltc(el, i, wargv); 193 break; 194 case EL_SETTC: 195 wargv[0] = L"settc"; 196 ret = terminal_settc(el, i, wargv); 197 break; 198 case EL_ECHOTC: 199 wargv[0] = L"echotc"; 200 ret = terminal_echotc(el, i, wargv); 201 break; 202 case EL_SETTY: 203 wargv[0] = L"setty"; 204 ret = tty_stty(el, i, wargv); 205 break; 206 default: 207 ret = -1; 208 } 209 el_free(wargv); 210 break; 211 } 212 213 /* XXX: do we need to change el_func_t too? */ 214 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 215 const char *args[2]; 216 el_func_t func; 217 wchar_t **wargv; 218 219 args[0] = va_arg(ap, const char *); 220 args[1] = va_arg(ap, const char *); 221 func = va_arg(ap, el_func_t); 222 223 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 224 if (!wargv) { 225 ret = -1; 226 goto out; 227 } 228 /* XXX: The two strdup's leak */ 229 ret = map_addfunc(el, wcsdup(wargv[0]), wcsdup(wargv[1]), 230 func); 231 el_free(wargv); 232 break; 233 } 234 case EL_HIST: { /* hist_fun_t, const char * */ 235 hist_fun_t fun = va_arg(ap, hist_fun_t); 236 void *ptr = va_arg(ap, void *); 237 ret = hist_set(el, fun, ptr); 238 el->el_flags |= NARROW_HISTORY; 239 break; 240 } 241 242 case EL_GETCFN: /* el_rfunc_t */ 243 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 244 break; 245 246 case EL_CLIENTDATA: /* void * */ 247 ret = el_wset(el, op, va_arg(ap, void *)); 248 break; 249 250 case EL_SETFP: { /* int, FILE * */ 251 int what = va_arg(ap, int); 252 FILE *fp = va_arg(ap, FILE *); 253 ret = el_wset(el, op, what, fp); 254 break; 255 } 256 257 case EL_REFRESH: 258 re_clear_display(el); 259 re_refresh(el); 260 terminal__flush(el); 261 ret = 0; 262 break; 263 264 default: 265 ret = -1; 266 break; 267 } 268 269 out: 270 va_end(ap); 271 return ret; 272 } 273 274 275 public int 276 el_get(EditLine *el, int op, ...) 277 { 278 va_list ap; 279 int ret; 280 281 if (!el) 282 return -1; 283 284 va_start(ap, op); 285 286 switch (op) { 287 case EL_PROMPT: /* el_pfunc_t * */ 288 case EL_RPROMPT: { 289 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 290 ret = prompt_get(el, p, 0, op); 291 break; 292 } 293 294 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 295 case EL_RPROMPT_ESC: { 296 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 297 char *c = va_arg(ap, char *); 298 wchar_t wc = 0; 299 ret = prompt_get(el, p, &wc, op); 300 *c = (char)wc; 301 break; 302 } 303 304 case EL_EDITOR: { 305 const char **p = va_arg(ap, const char **); 306 const wchar_t *pw; 307 ret = el_wget(el, op, &pw); 308 *p = ct_encode_string(pw, &el->el_lgcyconv); 309 if (!el->el_lgcyconv.csize) 310 ret = -1; 311 break; 312 } 313 314 case EL_TERMINAL: /* const char ** */ 315 ret = el_wget(el, op, va_arg(ap, const char **)); 316 break; 317 318 case EL_SIGNAL: /* int * */ 319 case EL_EDITMODE: 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[20]; 327 static char gettc[] = "gettc"; 328 int i; 329 for (i = 1; i < (int)__arraycount(argv); ++i) 330 if ((argv[i] = va_arg(ap, char *)) == NULL) 331 break; 332 argv[0] = gettc; 333 ret = terminal_gettc(el, i, argv); 334 break; 335 } 336 337 case EL_GETCFN: /* el_rfunc_t */ 338 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 339 break; 340 341 case EL_CLIENTDATA: /* void ** */ 342 ret = el_wget(el, op, va_arg(ap, void **)); 343 break; 344 345 case EL_GETFP: { /* int, FILE ** */ 346 int what = va_arg(ap, int); 347 FILE **fpp = va_arg(ap, FILE **); 348 ret = el_wget(el, op, what, fpp); 349 break; 350 } 351 352 default: 353 ret = -1; 354 break; 355 } 356 357 va_end(ap); 358 return ret; 359 } 360 361 362 const LineInfo * 363 el_line(EditLine *el) 364 { 365 const LineInfoW *winfo = el_wline(el); 366 LineInfo *info = &el->el_lgcylinfo; 367 size_t offset; 368 const wchar_t *p; 369 370 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 371 372 offset = 0; 373 for (p = winfo->buffer; p < winfo->cursor; p++) 374 offset += ct_enc_width(*p); 375 info->cursor = info->buffer + offset; 376 377 offset = 0; 378 for (p = winfo->buffer; p < winfo->lastchar; p++) 379 offset += ct_enc_width(*p); 380 info->lastchar = info->buffer + offset; 381 382 return info; 383 } 384 385 386 int 387 el_insertstr(EditLine *el, const char *str) 388 { 389 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 390 } 391
Indexes created Tue Sep 23 22:09:46 GMT 2025