1 /* $NetBSD: eln.c,v 1.18 2015/03/24 21:26:50 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the NetBSD 18 * Foundation, Inc. and its contributors. 19 * 4. Neither the name of The NetBSD Foundation nor the names of its 20 * contributors may be used to endorse or promote products derived 21 * from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 27 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 28 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 31 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33 * POSSIBILITY OF SUCH DAMAGE. 34 */ 35 #include "config.h" 36 #if !defined(lint) && !defined(SCCSID) 37 __RCSID("$NetBSD: eln.c,v 1.18 2015/03/24 21:26:50 christos Exp $"); 38 #endif /* not lint && not SCCSID */ 39 40 #include "histedit.h" 41 #include "el.h" 42 #include "read.h" 43 #include <stdarg.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 47 public int 48 el_getc(EditLine *el, char *cp) 49 { 50 int num_read; 51 wchar_t wc = 0; 52 53 if (!(el->el_flags & CHARSET_IS_UTF8)) 54 el->el_flags |= IGNORE_EXTCHARS; 55 num_read = el_wgetc (el, &wc); 56 if (!(el->el_flags & CHARSET_IS_UTF8)) 57 el->el_flags &= ~IGNORE_EXTCHARS; 58 59 if (num_read > 0) 60 *cp = (char)wc; 61 return num_read; 62 } 63 64 65 public void 66 el_push(EditLine *el, const char *str) 67 { 68 /* Using multibyte->wide string decoding works fine under single-byte 69 * character sets too, and Does The Right Thing. */ 70 el_wpush(el, ct_decode_string(str, &el->el_lgcyconv)); 71 } 72 73 74 public const char * 75 el_gets(EditLine *el, int *nread) 76 { 77 const wchar_t *tmp; 78 int nwread; 79 80 *nread = 0; 81 82 if (!(el->el_flags & CHARSET_IS_UTF8)) 83 el->el_flags |= IGNORE_EXTCHARS; 84 tmp = el_wgets(el, &nwread); 85 if (!(el->el_flags & CHARSET_IS_UTF8)) 86 el->el_flags &= ~IGNORE_EXTCHARS; 87 for (int i = 0; i < nwread; i++) 88 *nread += ct_enc_width(tmp[i]); 89 return ct_encode_string(tmp, &el->el_lgcyconv); 90 } 91 92 93 public int 94 el_parse(EditLine *el, int argc, const char *argv[]) 95 { 96 int ret; 97 const wchar_t **wargv; 98 99 wargv = (const wchar_t **) 100 ct_decode_argv(argc, argv, &el->el_lgcyconv); 101 if (!wargv) 102 return -1; 103 ret = el_wparse(el, argc, wargv); 104 ct_free_argv(wargv); 105 106 return ret; 107 } 108 109 110 public int 111 el_set(EditLine *el, int op, ...) 112 { 113 va_list ap; 114 int ret; 115 116 if (!el) 117 return -1; 118 va_start(ap, op); 119 120 switch (op) { 121 case EL_PROMPT: /* el_pfunc_t */ 122 case EL_RPROMPT: { 123 el_pfunc_t p = va_arg(ap, el_pfunc_t); 124 ret = prompt_set(el, p, 0, op, 0); 125 break; 126 } 127 128 case EL_RESIZE: { 129 el_zfunc_t p = va_arg(ap, el_zfunc_t); 130 void *arg = va_arg(ap, void *); 131 ret = ch_resizefun(el, p, arg); 132 break; 133 } 134 135 case EL_ALIAS_TEXT: { 136 el_afunc_t p = va_arg(ap, el_afunc_t); 137 void *arg = va_arg(ap, void *); 138 ret = ch_aliasfun(el, p, arg); 139 break; 140 } 141 142 case EL_PROMPT_ESC: 143 case EL_RPROMPT_ESC: { 144 el_pfunc_t p = va_arg(ap, el_pfunc_t); 145 int c = va_arg(ap, int); 146 147 ret = prompt_set(el, p, c, op, 0); 148 break; 149 } 150 151 case EL_TERMINAL: /* const char * */ 152 ret = el_wset(el, op, va_arg(ap, char *)); 153 break; 154 155 case EL_EDITOR: /* const wchar_t * */ 156 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 157 &el->el_lgcyconv)); 158 break; 159 160 case EL_SIGNAL: /* int */ 161 case EL_EDITMODE: 162 case EL_UNBUFFERED: 163 case EL_PREP_TERM: 164 ret = el_wset(el, op, va_arg(ap, int)); 165 break; 166 167 case EL_BIND: /* const char * list -> const wchar_t * list */ 168 case EL_TELLTC: 169 case EL_SETTC: 170 case EL_ECHOTC: 171 case EL_SETTY: { 172 const char *argv[20]; 173 int i; 174 const wchar_t **wargv; 175 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 176 if ((argv[i] = va_arg(ap, const char *)) == NULL) 177 break; 178 argv[0] = argv[i] = NULL; 179 wargv = (const wchar_t **) 180 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 181 if (!wargv) { 182 ret = -1; 183 goto out; 184 } 185 /* 186 * AFAIK we can't portably pass through our new wargv to 187 * el_wset(), so we have to reimplement the body of 188 * el_wset() for these ops. 189 */ 190 switch (op) { 191 case EL_BIND: 192 wargv[0] = STR("bind"); 193 ret = map_bind(el, i, wargv); 194 break; 195 case EL_TELLTC: 196 wargv[0] = STR("telltc"); 197 ret = terminal_telltc(el, i, wargv); 198 break; 199 case EL_SETTC: 200 wargv[0] = STR("settc"); 201 ret = terminal_settc(el, i, wargv); 202 break; 203 case EL_ECHOTC: 204 wargv[0] = STR("echotc"); 205 ret = terminal_echotc(el, i, wargv); 206 break; 207 case EL_SETTY: 208 wargv[0] = STR("setty"); 209 ret = tty_stty(el, i, wargv); 210 break; 211 default: 212 ret = -1; 213 } 214 ct_free_argv(wargv); 215 break; 216 } 217 218 /* XXX: do we need to change el_func_t too? */ 219 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 220 const char *args[2]; 221 el_func_t func; 222 wchar_t **wargv; 223 224 args[0] = va_arg(ap, const char *); 225 args[1] = va_arg(ap, const char *); 226 func = va_arg(ap, el_func_t); 227 228 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 229 if (!wargv) { 230 ret = -1; 231 goto out; 232 } 233 // XXX: The two strdup's leak 234 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 235 func); 236 ct_free_argv(wargv); 237 break; 238 } 239 case EL_HIST: { /* hist_fun_t, const char * */ 240 hist_fun_t fun = va_arg(ap, hist_fun_t); 241 void *ptr = va_arg(ap, void *); 242 ret = hist_set(el, fun, ptr); 243 el->el_flags |= NARROW_HISTORY; 244 break; 245 } 246 247 /* XXX: do we need to change el_rfunc_t? */ 248 case EL_GETCFN: /* el_rfunc_t */ 249 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 250 el->el_flags |= NARROW_READ; 251 break; 252 253 case EL_CLIENTDATA: /* void * */ 254 ret = el_wset(el, op, va_arg(ap, void *)); 255 break; 256 257 case EL_SETFP: { /* int, FILE * */ 258 int what = va_arg(ap, int); 259 FILE *fp = va_arg(ap, FILE *); 260 ret = el_wset(el, op, what, fp); 261 break; 262 } 263 264 case EL_REFRESH: 265 re_clear_display(el); 266 re_refresh(el); 267 terminal__flush(el); 268 ret = 0; 269 break; 270 271 default: 272 ret = -1; 273 break; 274 } 275 276 out: 277 va_end(ap); 278 return ret; 279 } 280 281 282 public int 283 el_get(EditLine *el, int op, ...) 284 { 285 va_list ap; 286 int ret; 287 288 if (!el) 289 return -1; 290 291 va_start(ap, op); 292 293 switch (op) { 294 case EL_PROMPT: /* el_pfunc_t * */ 295 case EL_RPROMPT: { 296 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 297 ret = prompt_get(el, p, 0, op); 298 break; 299 } 300 301 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 302 case EL_RPROMPT_ESC: { 303 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 304 char *c = va_arg(ap, char *); 305 wchar_t wc = 0; 306 ret = prompt_get(el, p, &wc, op); 307 *c = (char)wc; 308 break; 309 } 310 311 case EL_EDITOR: { 312 const char **p = va_arg(ap, const char **); 313 const wchar_t *pw; 314 ret = el_wget(el, op, &pw); 315 *p = ct_encode_string(pw, &el->el_lgcyconv); 316 if (!el->el_lgcyconv.csize) 317 ret = -1; 318 break; 319 } 320 321 case EL_TERMINAL: /* const char ** */ 322 ret = el_wget(el, op, va_arg(ap, const char **)); 323 break; 324 325 case EL_SIGNAL: /* int * */ 326 case EL_EDITMODE: 327 case EL_UNBUFFERED: 328 case EL_PREP_TERM: 329 ret = el_wget(el, op, va_arg(ap, int *)); 330 break; 331 332 case EL_GETTC: { 333 char *argv[20]; 334 static char gettc[] = "gettc"; 335 int i; 336 for (i = 1; i < (int)__arraycount(argv); ++i) 337 if ((argv[i] = va_arg(ap, char *)) == NULL) 338 break; 339 argv[0] = gettc; 340 ret = terminal_gettc(el, i, argv); 341 break; 342 } 343 344 /* XXX: do we need to change el_rfunc_t? */ 345 case EL_GETCFN: /* el_rfunc_t */ 346 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 347 break; 348 349 case EL_CLIENTDATA: /* void ** */ 350 ret = el_wget(el, op, va_arg(ap, void **)); 351 break; 352 353 case EL_GETFP: { /* int, FILE ** */ 354 int what = va_arg(ap, int); 355 FILE **fpp = va_arg(ap, FILE **); 356 ret = el_wget(el, op, what, fpp); 357 break; 358 } 359 360 default: 361 ret = -1; 362 break; 363 } 364 365 va_end(ap); 366 return ret; 367 } 368 369 370 const LineInfo * 371 el_line(EditLine *el) 372 { 373 const LineInfoW *winfo = el_wline(el); 374 LineInfo *info = &el->el_lgcylinfo; 375 size_t offset; 376 const Char *p; 377 378 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 379 380 offset = 0; 381 for (p = winfo->buffer; p < winfo->cursor; p++) 382 offset += ct_enc_width(*p); 383 info->cursor = info->buffer + offset; 384 385 offset = 0; 386 for (p = winfo->buffer; p < winfo->lastchar; p++) 387 offset += ct_enc_width(*p); 388 info->lastchar = info->buffer + offset; 389 390 return info; 391 } 392 393 394 int 395 el_insertstr(EditLine *el, const char *str) 396 { 397 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 398 } 399