1/* $NetBSD: eln.c,v 1.28 2016/02/28 23:02:24 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 1.28 2016/02/28 23:02:24 christos Exp $"); 31#endif /* not lint && not SCCSID */ 32#include <sys/cdefs.h> 33__FBSDID("$FreeBSD: stable/11/lib/libedit/eln.c 313981 2017-02-20 03:33:59Z pfg $"); 34 35#include <errno.h> 36#include <stdarg.h> 37#include <stdio.h> 38#include <stdlib.h> 39 40#include "el.h" 41 42public int 43el_getc(EditLine *el, char *cp) 44{ 45 int num_read; 46 wchar_t wc = 0; 47 48 num_read = el_wgetc(el, &wc); 49 *cp = '\0'; 50 if (num_read <= 0) 51 return num_read; 52 num_read = ct_wctob(wc); 53 if (num_read == EOF) { 54 errno = ERANGE; 55 return -1; 56 } else { 57 *cp = (char)num_read; 58 return 1; 59 } 60} 61 62 63#ifdef WIDECHAR 64public void 65el_push(EditLine *el, const char *str) 66{ 67 /* Using multibyte->wide string decoding works fine under single-byte 68 * character sets too, and Does The Right Thing. */ 69 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv)); 70} 71 72 73public const char * 74el_gets(EditLine *el, int *nread) 75{ 76 const wchar_t *tmp; 77 78 tmp = el_wgets(el, nread); 79 if (tmp != NULL) { 80 int i; 81 size_t nwread = 0; 82 83 for (i = 0; i < *nread; i++) 84 nwread += ct_enc_width(tmp[i]); 85 *nread = (int)nwread; 86 } 87 return ct_encode_string(tmp, &el->el_lgcyconv); 88} 89 90 91public int 92el_parse(EditLine *el, int argc, const char *argv[]) 93{ 94 int ret; 95 const wchar_t **wargv; 96 97 wargv = (const wchar_t **) 98 ct_decode_argv(argc, argv, &el->el_lgcyconv); 99 if (!wargv) 100 return -1; 101 ret = el_wparse(el, argc, wargv); 102 ct_free_argv(wargv); 103 104 return ret; 105} 106 107 108public int 109el_set(EditLine *el, int op, ...) 110{ 111 va_list ap; 112 int ret; 113 114 if (!el) 115 return -1; 116 va_start(ap, op); 117 118 switch (op) { 119 case EL_PROMPT: /* el_pfunc_t */ 120 case EL_RPROMPT: { 121 el_pfunc_t p = va_arg(ap, el_pfunc_t); 122 ret = prompt_set(el, p, 0, op, 0); 123 break; 124 } 125 126 case EL_RESIZE: { 127 el_zfunc_t p = va_arg(ap, el_zfunc_t); 128 void *arg = va_arg(ap, void *); 129 ret = ch_resizefun(el, p, arg); 130 break; 131 } 132 133 case EL_ALIAS_TEXT: { 134 el_afunc_t p = va_arg(ap, el_afunc_t); 135 void *arg = va_arg(ap, void *); 136 ret = ch_aliasfun(el, p, arg); 137 break; 138 } 139 140 case EL_PROMPT_ESC: 141 case EL_RPROMPT_ESC: { 142 el_pfunc_t p = va_arg(ap, el_pfunc_t); 143 int c = va_arg(ap, int); 144 145 ret = prompt_set(el, p, c, op, 0); 146 break; 147 } 148 149 case EL_TERMINAL: /* const char * */ 150 ret = el_wset(el, op, va_arg(ap, char *)); 151 break; 152 153 case EL_EDITOR: /* const wchar_t * */ 154 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 155 &el->el_lgcyconv)); 156 break; 157 158 case EL_SIGNAL: /* int */ 159 case EL_EDITMODE: 160 case EL_UNBUFFERED: 161 case EL_PREP_TERM: 162 ret = el_wset(el, op, va_arg(ap, int)); 163 break; 164 165 case EL_BIND: /* const char * list -> const wchar_t * list */ 166 case EL_TELLTC: 167 case EL_SETTC: 168 case EL_ECHOTC: 169 case EL_SETTY: { 170 const char *argv[20]; 171 int i; 172 const wchar_t **wargv; 173 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 174 if ((argv[i] = va_arg(ap, const char *)) == NULL) 175 break; 176 argv[0] = argv[i] = NULL; 177 wargv = (const wchar_t **) 178 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 179 if (!wargv) { 180 ret = -1; 181 goto out; 182 } 183 /* 184 * AFAIK we can't portably pass through our new wargv to 185 * el_wset(), so we have to reimplement the body of 186 * el_wset() for these ops. 187 */ 188 switch (op) { 189 case EL_BIND: 190 wargv[0] = STR("bind"); 191 ret = map_bind(el, i, wargv); 192 break; 193 case EL_TELLTC: 194 wargv[0] = STR("telltc"); 195 ret = terminal_telltc(el, i, wargv); 196 break; 197 case EL_SETTC: 198 wargv[0] = STR("settc"); 199 ret = terminal_settc(el, i, wargv); 200 break; 201 case EL_ECHOTC: 202 wargv[0] = STR("echotc"); 203 ret = terminal_echotc(el, i, wargv); 204 break; 205 case EL_SETTY: 206 wargv[0] = STR("setty"); 207 ret = tty_stty(el, i, wargv); 208 break; 209 default: 210 ret = -1; 211 } 212 ct_free_argv(wargv); 213 break; 214 } 215 216 /* XXX: do we need to change el_func_t too? */ 217 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 218 const char *args[2]; 219 el_func_t func; 220 wchar_t **wargv; 221 222 args[0] = va_arg(ap, const char *); 223 args[1] = va_arg(ap, const char *); 224 func = va_arg(ap, el_func_t); 225 226 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 227 if (!wargv) { 228 ret = -1; 229 goto out; 230 } 231 /* XXX: The two strdup's leak */ 232 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 233 func); 234 ct_free_argv(wargv); 235 break; 236 } 237 case EL_HIST: { /* hist_fun_t, const char * */ 238 hist_fun_t fun = va_arg(ap, hist_fun_t); 239 void *ptr = va_arg(ap, void *); 240 ret = hist_set(el, fun, ptr); 241 el->el_flags |= NARROW_HISTORY; 242 break; 243 } 244 245 case EL_GETCFN: /* el_rfunc_t */ 246 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 247 break; 248 249 case EL_CLIENTDATA: /* void * */ 250 ret = el_wset(el, op, va_arg(ap, void *)); 251 break; 252 253 case EL_SETFP: { /* int, FILE * */ 254 int what = va_arg(ap, int); 255 FILE *fp = va_arg(ap, FILE *); 256 ret = el_wset(el, op, what, fp); 257 break; 258 } 259 260 case EL_REFRESH: 261 re_clear_display(el); 262 re_refresh(el); 263 terminal__flush(el); 264 ret = 0; 265 break; 266 267 default: 268 ret = -1; 269 break; 270 } 271 272out: 273 va_end(ap); 274 return ret; 275} 276 277 278public int 279el_get(EditLine *el, int op, ...) 280{ 281 va_list ap; 282 int ret; 283 284 if (!el) 285 return -1; 286 287 va_start(ap, op); 288 289 switch (op) { 290 case EL_PROMPT: /* el_pfunc_t * */ 291 case EL_RPROMPT: { 292 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 293 ret = prompt_get(el, p, 0, op); 294 break; 295 } 296 297 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 298 case EL_RPROMPT_ESC: { 299 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 300 char *c = va_arg(ap, char *); 301 wchar_t wc = 0; 302 ret = prompt_get(el, p, &wc, op); 303 *c = (char)wc; 304 break; 305 } 306 307 case EL_EDITOR: { 308 const char **p = va_arg(ap, const char **); 309 const wchar_t *pw; 310 ret = el_wget(el, op, &pw); 311 *p = ct_encode_string(pw, &el->el_lgcyconv); 312 if (!el->el_lgcyconv.csize) 313 ret = -1; 314 break; 315 } 316 317 case EL_TERMINAL: /* const char ** */ 318 ret = el_wget(el, op, va_arg(ap, const char **)); 319 break; 320 321 case EL_SIGNAL: /* int * */ 322 case EL_EDITMODE: 323 case EL_UNBUFFERED: 324 case EL_PREP_TERM: 325 ret = el_wget(el, op, va_arg(ap, int *)); 326 break; 327 328 case EL_GETTC: { 329 char *argv[20]; 330 static char gettc[] = "gettc"; 331 int i; 332 for (i = 1; i < (int)__arraycount(argv); ++i) 333 if ((argv[i] = va_arg(ap, char *)) == NULL) 334 break; 335 argv[0] = gettc; 336 ret = terminal_gettc(el, i, argv); 337 break; 338 } 339 340 case EL_GETCFN: /* el_rfunc_t */ 341 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 342 break; 343 344 case EL_CLIENTDATA: /* void ** */ 345 ret = el_wget(el, op, va_arg(ap, void **)); 346 break; 347 348 case EL_GETFP: { /* int, FILE ** */ 349 int what = va_arg(ap, int); 350 FILE **fpp = va_arg(ap, FILE **); 351 ret = el_wget(el, op, what, fpp); 352 break; 353 } 354 355 default: 356 ret = -1; 357 break; 358 } 359 360 va_end(ap); 361 return ret; 362} 363 364 365const LineInfo * 366el_line(EditLine *el) 367{ 368 const LineInfoW *winfo = el_wline(el); 369 LineInfo *info = &el->el_lgcylinfo; 370 size_t offset; 371 const Char *p; 372 373 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 374 375 offset = 0; 376 for (p = winfo->buffer; p < winfo->cursor; p++) 377 offset += ct_enc_width(*p); 378 info->cursor = info->buffer + offset; 379 380 offset = 0; 381 for (p = winfo->buffer; p < winfo->lastchar; p++) 382 offset += ct_enc_width(*p); 383 info->lastchar = info->buffer + offset; 384 385 return info; 386} 387 388 389int 390el_insertstr(EditLine *el, const char *str) 391{ 392 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 393} 394#endif /* WIDECHAR */ 395