1 /* $NetBSD: eln.c,v 1.17 2014/06/18 18:12:28 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 1.17 2014/06/18 18:12:28 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 90 return ct_encode_string(tmp, &el->el_lgcyconv); 91 } 92 93 94 public int 95 el_parse(EditLine *el, int argc, const char *argv[]) 96 { 97 int ret; 98 const wchar_t **wargv; 99 100 wargv = (const wchar_t **) 101 ct_decode_argv(argc, argv, &el->el_lgcyconv); 102 if (!wargv) 103 return -1; 104 ret = el_wparse(el, argc, wargv); 105 ct_free_argv(wargv); 106 107 return ret; 108 } 109 110 111 public int 112 el_set(EditLine *el, int op, ...) 113 { 114 va_list ap; 115 int ret; 116 117 if (!el) 118 return -1; 119 va_start(ap, op); 120 121 switch (op) { 122 case EL_PROMPT: /* el_pfunc_t */ 123 case EL_RPROMPT: { 124 el_pfunc_t p = va_arg(ap, el_pfunc_t); 125 ret = prompt_set(el, p, 0, op, 0); 126 break; 127 } 128 129 case EL_RESIZE: { 130 el_zfunc_t p = va_arg(ap, el_zfunc_t); 131 void *arg = va_arg(ap, void *); 132 ret = ch_resizefun(el, p, arg); 133 break; 134 } 135 136 case EL_ALIAS_TEXT: { 137 el_afunc_t p = va_arg(ap, el_afunc_t); 138 void *arg = va_arg(ap, void *); 139 ret = ch_aliasfun(el, p, arg); 140 break; 141 } 142 143 case EL_PROMPT_ESC: 144 case EL_RPROMPT_ESC: { 145 el_pfunc_t p = va_arg(ap, el_pfunc_t); 146 int c = va_arg(ap, int); 147 148 ret = prompt_set(el, p, c, op, 0); 149 break; 150 } 151 152 case EL_TERMINAL: /* const char * */ 153 ret = el_wset(el, op, va_arg(ap, char *)); 154 break; 155 156 case EL_EDITOR: /* const wchar_t * */ 157 ret = el_wset(el, op, ct_decode_string(va_arg(ap, char *), 158 &el->el_lgcyconv)); 159 break; 160 161 case EL_SIGNAL: /* int */ 162 case EL_EDITMODE: 163 case EL_UNBUFFERED: 164 case EL_PREP_TERM: 165 ret = el_wset(el, op, va_arg(ap, int)); 166 break; 167 168 case EL_BIND: /* const char * list -> const wchar_t * list */ 169 case EL_TELLTC: 170 case EL_SETTC: 171 case EL_ECHOTC: 172 case EL_SETTY: { 173 const char *argv[20]; 174 int i; 175 const wchar_t **wargv; 176 for (i = 1; i < (int)__arraycount(argv) - 1; ++i) 177 if ((argv[i] = va_arg(ap, const char *)) == NULL) 178 break; 179 argv[0] = argv[i] = NULL; 180 wargv = (const wchar_t **) 181 ct_decode_argv(i + 1, argv, &el->el_lgcyconv); 182 if (!wargv) { 183 ret = -1; 184 goto out; 185 } 186 /* 187 * AFAIK we can't portably pass through our new wargv to 188 * el_wset(), so we have to reimplement the body of 189 * el_wset() for these ops. 190 */ 191 switch (op) { 192 case EL_BIND: 193 wargv[0] = STR("bind"); 194 ret = map_bind(el, i, wargv); 195 break; 196 case EL_TELLTC: 197 wargv[0] = STR("telltc"); 198 ret = terminal_telltc(el, i, wargv); 199 break; 200 case EL_SETTC: 201 wargv[0] = STR("settc"); 202 ret = terminal_settc(el, i, wargv); 203 break; 204 case EL_ECHOTC: 205 wargv[0] = STR("echotc"); 206 ret = terminal_echotc(el, i, wargv); 207 break; 208 case EL_SETTY: 209 wargv[0] = STR("setty"); 210 ret = tty_stty(el, i, wargv); 211 break; 212 default: 213 ret = -1; 214 } 215 ct_free_argv(wargv); 216 break; 217 } 218 219 /* XXX: do we need to change el_func_t too? */ 220 case EL_ADDFN: { /* const char *, const char *, el_func_t */ 221 const char *args[2]; 222 el_func_t func; 223 wchar_t **wargv; 224 225 args[0] = va_arg(ap, const char *); 226 args[1] = va_arg(ap, const char *); 227 func = va_arg(ap, el_func_t); 228 229 wargv = ct_decode_argv(2, args, &el->el_lgcyconv); 230 if (!wargv) { 231 ret = -1; 232 goto out; 233 } 234 // XXX: The two strdup's leak 235 ret = map_addfunc(el, Strdup(wargv[0]), Strdup(wargv[1]), 236 func); 237 ct_free_argv(wargv); 238 break; 239 } 240 case EL_HIST: { /* hist_fun_t, const char * */ 241 hist_fun_t fun = va_arg(ap, hist_fun_t); 242 void *ptr = va_arg(ap, void *); 243 ret = hist_set(el, fun, ptr); 244 el->el_flags |= NARROW_HISTORY; 245 break; 246 } 247 248 /* XXX: do we need to change el_rfunc_t? */ 249 case EL_GETCFN: /* el_rfunc_t */ 250 ret = el_wset(el, op, va_arg(ap, el_rfunc_t)); 251 el->el_flags |= NARROW_READ; 252 break; 253 254 case EL_CLIENTDATA: /* void * */ 255 ret = el_wset(el, op, va_arg(ap, void *)); 256 break; 257 258 case EL_SETFP: { /* int, FILE * */ 259 int what = va_arg(ap, int); 260 FILE *fp = va_arg(ap, FILE *); 261 ret = el_wset(el, op, what, fp); 262 break; 263 } 264 265 case EL_REFRESH: 266 re_clear_display(el); 267 re_refresh(el); 268 terminal__flush(el); 269 ret = 0; 270 break; 271 272 default: 273 ret = -1; 274 break; 275 } 276 277 out: 278 va_end(ap); 279 return ret; 280 } 281 282 283 public int 284 el_get(EditLine *el, int op, ...) 285 { 286 va_list ap; 287 int ret; 288 289 if (!el) 290 return -1; 291 292 va_start(ap, op); 293 294 switch (op) { 295 case EL_PROMPT: /* el_pfunc_t * */ 296 case EL_RPROMPT: { 297 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 298 ret = prompt_get(el, p, 0, op); 299 break; 300 } 301 302 case EL_PROMPT_ESC: /* el_pfunc_t *, char **/ 303 case EL_RPROMPT_ESC: { 304 el_pfunc_t *p = va_arg(ap, el_pfunc_t *); 305 char *c = va_arg(ap, char *); 306 wchar_t wc = 0; 307 ret = prompt_get(el, p, &wc, op); 308 *c = (char)wc; 309 break; 310 } 311 312 case EL_EDITOR: { 313 const char **p = va_arg(ap, const char **); 314 const wchar_t *pw; 315 ret = el_wget(el, op, &pw); 316 *p = ct_encode_string(pw, &el->el_lgcyconv); 317 if (!el->el_lgcyconv.csize) 318 ret = -1; 319 break; 320 } 321 322 case EL_TERMINAL: /* const char ** */ 323 ret = el_wget(el, op, va_arg(ap, const char **)); 324 break; 325 326 case EL_SIGNAL: /* int * */ 327 case EL_EDITMODE: 328 case EL_UNBUFFERED: 329 case EL_PREP_TERM: 330 ret = el_wget(el, op, va_arg(ap, int *)); 331 break; 332 333 case EL_GETTC: { 334 char *argv[20]; 335 static char gettc[] = "gettc"; 336 int i; 337 for (i = 1; i < (int)__arraycount(argv); ++i) 338 if ((argv[i] = va_arg(ap, char *)) == NULL) 339 break; 340 argv[0] = gettc; 341 ret = terminal_gettc(el, i, argv); 342 break; 343 } 344 345 /* XXX: do we need to change el_rfunc_t? */ 346 case EL_GETCFN: /* el_rfunc_t */ 347 ret = el_wget(el, op, va_arg(ap, el_rfunc_t *)); 348 break; 349 350 case EL_CLIENTDATA: /* void ** */ 351 ret = el_wget(el, op, va_arg(ap, void **)); 352 break; 353 354 case EL_GETFP: { /* int, FILE ** */ 355 int what = va_arg(ap, int); 356 FILE **fpp = va_arg(ap, FILE **); 357 ret = el_wget(el, op, what, fpp); 358 break; 359 } 360 361 default: 362 ret = -1; 363 break; 364 } 365 366 va_end(ap); 367 return ret; 368 } 369 370 371 const LineInfo * 372 el_line(EditLine *el) 373 { 374 const LineInfoW *winfo = el_wline(el); 375 LineInfo *info = &el->el_lgcylinfo; 376 size_t offset; 377 const Char *p; 378 379 info->buffer = ct_encode_string(winfo->buffer, &el->el_lgcyconv); 380 381 offset = 0; 382 for (p = winfo->buffer; p < winfo->cursor; p++) 383 offset += ct_enc_width(*p); 384 info->cursor = info->buffer + offset; 385 386 offset = 0; 387 for (p = winfo->buffer; p < winfo->lastchar; p++) 388 offset += ct_enc_width(*p); 389 info->lastchar = info->buffer + offset; 390 391 return info; 392 } 393 394 395 int 396 el_insertstr(EditLine *el, const char *str) 397 { 398 return el_winsertstr(el, ct_decode_string(str, &el->el_lgcyconv)); 399 } 400