1 /* $OpenBSD: eln.c,v 1.18 2016/04/11 21:17:29 schwarze Exp $ */ 2 /* $NetBSD: eln.c,v 1.9 2010/11/04 13:53:12 christos Exp $ */ 3 4 /*- 5 * Copyright (c) 2009 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #include "config.h" 30 31 #include <errno.h> 32 #include <stdarg.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 36 #include "el.h" 37 38 int 39 el_getc(EditLine *el, char *cp) 40 { 41 int num_read; 42 wchar_t wc = 0; 43 44 num_read = el_wgetc(el, &wc); 45 *cp = '\0'; 46 if (num_read <= 0) 47 return num_read; 48 num_read = wctob(wc); 49 if (num_read == EOF) { 50 errno = ERANGE; 51 return -1; 52 } else { 53 *cp = num_read; 54 return 1; 55 } 56 } 57 58 59 void 60 el_push(EditLine *el, const char *str) 61 { 62 /* Using multibyte->wide string decoding works fine under single-byte 63 * character sets too, and Does The Right Thing. */ 64 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv)); 65 } 66 67 68 const char * 69 el_gets(EditLine *el, int *nread) 70 { 71 const wchar_t *tmp; 72 wchar_t *rd, *wr; 73 74 if ((tmp = el_wgets(el, nread)) == NULL) 75 return NULL; 76 77 /* 78 * Temporary until the libedit audit is complete: 79 * Filter out all non-ASCII characters. 80 */ 81 wr = (wchar_t *)tmp; 82 for (rd = wr; *rd != L'\0'; rd++) { 83 if (wr < rd) 84 *wr = *rd; 85 if (*rd < 128) 86 wr++; 87 } 88 *wr = L'\0'; 89 *nread = wr - tmp; 90 91 return ct_encode_string(tmp, &el->el_lgcyconv); 92 } 93 94 95 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 free(wargv); 107 108 return ret; 109 } 110 111 112 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_TERMINAL: /* const char * */ 138 ret = el_wset(el, op, va_arg(ap, char *)); 139 break; 140 141 case EL_EDITOR: /* const wchar_t * */ 142 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 143 &el->el_lgcyconv)); 144 break; 145 146 case EL_SIGNAL: /* int */ 147 case EL_EDITMODE: 148 case EL_UNBUFFERED: 149 case EL_PREP_TERM: 150 ret = el_wset(el, op, va_arg(ap, int)); 151 break; 152 153 case EL_BIND: /* const char * list -> const wchar_t * list */ 154 case EL_TELLTC: 155 case EL_SETTC: 156 case EL_ECHOTC: 157 case EL_SETTY: { 158 const char *argv[21]; 159 int i; 160 const wchar_t **wargv; 161 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 162 if ((argv[i] = va_arg(ap, char *)) == NULL) 163 break; 164 argv[0] = argv[i] = NULL; 165 wargv = (const wchar_t **) 166 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 167 if (!wargv) { 168 ret = -1; 169 goto out; 170 } 171 /* 172 * AFAIK we can't portably pass through our new wargv to 173 * el_wset(), so we have to reimplement the body of 174 * el_wset() for these ops. 175 */ 176 switch (op) { 177 case EL_BIND: 178 wargv[0] = L"bind"; 179 ret = map_bind(el, i, wargv); 180 break; 181 case EL_TELLTC: 182 wargv[0] = L"telltc"; 183 ret = terminal_telltc(el, i, wargv); 184 break; 185 case EL_SETTC: 186 wargv[0] = L"settc"; 187 ret = terminal_settc(el, i, wargv); 188 break; 189 case EL_ECHOTC: 190 wargv[0] = L"echotc"; 191 ret = terminal_echotc(el, i, wargv); 192 break; 193 case EL_SETTY: 194 wargv[0] = L"setty"; 195 ret = tty_stty(el, i, wargv); 196 break; 197 default: 198 ret = -1; 199 } 200 free(wargv); 201 break; 202 } 203 204 /* XXX: do we need to change el_func_t too? */ 205 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 206 const char *args[2]; 207 el_func_t func; 208 wchar_t **wargv; 209 210 args[0] = va_arg(ap, const char *); 211 args[1] = va_arg(ap, const char *); 212 func = va_arg(ap, el_func_t); 213 214 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 215 if (!wargv) { 216 ret = -1; 217 goto out; 218 } 219 /* XXX: The two strdup's leak */ 220 ret = map_addfunc(el, wcsdup(wargv[0]), wcsdup(wargv[1]), 221 func); 222 free(wargv); 223 break; 224 } 225 case EL_HIST: { /* hist_fun_t, const char * */ 226 hist_fun_t fun = va_arg(ap, hist_fun_t); 227 void *ptr = va_arg(ap, void *); 228 ret = hist_set(el, fun, ptr); 229 el->el_flags |= NARROW_HISTORY; 230 break; 231 } 232 case EL_GETCFN: /* el_rfunc_t */ 233 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 234 break; 235 case EL_CLIENTDATA: /* void * */ 236 ret = el_wset(el, op, va_arg(ap, void *)); 237 break; 238 case EL_SETFP: { /* int, FILE * */ 239 int what = va_arg(ap, int); 240 FILE *fp = va_arg(ap, FILE *); 241 ret = el_wset(el, op, what, fp); 242 break; 243 } 244 case EL_PROMPT_ESC: /* el_pfunc_t, char */ 245 case EL_RPROMPT_ESC: { 246 el_pfunc_t p = va_arg(ap, el_pfunc_t); 247 char c = va_arg(ap, int); 248 ret = prompt_set(el, p, c, op, 0); 249 break; 250 } 251 default: 252 ret = -1; 253 break; 254 } 255 256 out: 257 va_end(ap); 258 return ret; 259 } 260 261 262 int 263 el_get(EditLine *el, int op, ...) 264 { 265 va_list ap; 266 int ret; 267 268 if (!el) 269 return -1; 270 271 va_start(ap, op); 272 273 switch (op) { 274 case EL_PROMPT: /* el_pfunc_t * */ 275 case EL_RPROMPT: { 276 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 277 ret = prompt_get(el, p, 0, op); 278 break; 279 } 280 281 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 282 case EL_RPROMPT_ESC: { 283 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 284 char *c = va_arg(ap, char *); 285 wchar_t wc = 0; 286 ret = prompt_get(el, p, &wc, op); 287 *c = (unsigned char)wc; 288 break; 289 } 290 291 case EL_EDITOR: { 292 const char **p = va_arg(ap, const char **); 293 const wchar_t *pw; 294 ret = el_wget(el, op, &pw); 295 *p = ct_encode_string(pw, &el->el_lgcyconv); 296 if (!el->el_lgcyconv.csize) 297 ret = -1; 298 break; 299 } 300 301 case EL_TERMINAL: /* const char ** */ 302 ret = el_wget(el, op, va_arg(ap, const char **)); 303 break; 304 305 case EL_SIGNAL: /* int * */ 306 case EL_EDITMODE: 307 case EL_UNBUFFERED: 308 case EL_PREP_TERM: 309 ret = el_wget(el, op, va_arg(ap, int *)); 310 break; 311 312 case EL_GETTC: { 313 char *argv[20]; 314 static char gettc[] = "gettc"; 315 int i; 316 for (i = 1; i < (int)__arraycount(argv); ++i) 317 if ((argv[i] = va_arg(ap, char *)) == NULL) 318 break; 319 argv[0] = gettc; 320 ret = terminal_gettc(el, i, argv); 321 break; 322 } 323 324 case EL_GETCFN: /* el_rfunc_t */ 325 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 326 break; 327 328 case EL_CLIENTDATA: /* void ** */ 329 ret = el_wget(el, op, va_arg(ap, void **)); 330 break; 331 332 case EL_GETFP: { /* int, FILE ** */ 333 int what = va_arg(ap, int); 334 FILE **fpp = va_arg(ap, FILE **); 335 ret = el_wget(el, op, what, fpp); 336 break; 337 } 338 339 default: 340 ret = -1; 341 break; 342 } 343 344 va_end(ap); 345 return ret; 346 } 347 348 349 const LineInfo * 350 el_line(EditLine *el) 351 { 352 const LineInfoW *winfo = el_wline(el); 353 LineInfo *info = &el->el_lgcylinfo; 354 size_t offset; 355 const wchar_t *p; 356 357 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 358 359 offset = 0; 360 for (p = winfo->buffer; p < winfo->cursor; p++) 361 offset += ct_enc_width(*p); 362 info->cursor = info->buffer + offset; 363 364 offset = 0; 365 for (p = winfo->buffer; p < winfo->lastchar; p++) 366 offset += ct_enc_width(*p); 367 info->lastchar = info->buffer + offset; 368 369 return info; 370 } 371 372 373 int 374 el_insertstr(EditLine *el, const char *str) 375 { 376 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 377 } 378